./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/float-newlib/double_req_bl_1032c.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a4ecdabc 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_1032c.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 dc0a2ba7c478f7aa42412993fd58e9bd96a2d03f ...................................................................................................................................................................................................................................................................................................... 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_1032c.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 dc0a2ba7c478f7aa42412993fd58e9bd96a2d03f .............................................................................................................................................................................................................................................................................................................................................................. 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-a4ecdab [2020-10-24 23:16:10,968 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-24 23:16:10,971 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-24 23:16:11,029 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-24 23:16:11,030 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-24 23:16:11,034 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-24 23:16:11,037 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-24 23:16:11,044 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-24 23:16:11,047 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-24 23:16:11,053 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-24 23:16:11,055 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-24 23:16:11,059 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-24 23:16:11,060 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-24 23:16:11,063 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-24 23:16:11,064 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-24 23:16:11,066 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-24 23:16:11,067 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-24 23:16:11,070 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-24 23:16:11,073 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-24 23:16:11,081 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-24 23:16:11,083 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-24 23:16:11,085 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-24 23:16:11,087 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-24 23:16:11,088 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-24 23:16:11,097 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-24 23:16:11,097 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-24 23:16:11,097 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-24 23:16:11,099 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-24 23:16:11,100 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-24 23:16:11,101 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-24 23:16:11,101 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-24 23:16:11,102 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-24 23:16:11,106 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-24 23:16:11,106 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-24 23:16:11,107 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-24 23:16:11,107 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-24 23:16:11,108 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-24 23:16:11,110 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-24 23:16:11,113 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-24 23:16:11,114 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-24 23:16:11,115 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-24 23:16:11,116 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-24 23:16:11,144 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-24 23:16:11,144 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-24 23:16:11,145 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-24 23:16:11,145 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-24 23:16:11,146 INFO L138 SettingsManager]: * Use SBE=true [2020-10-24 23:16:11,146 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-24 23:16:11,146 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-24 23:16:11,146 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-24 23:16:11,147 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-24 23:16:11,147 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-24 23:16:11,147 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-24 23:16:11,147 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-24 23:16:11,147 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-24 23:16:11,148 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-24 23:16:11,148 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-24 23:16:11,148 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-24 23:16:11,148 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-24 23:16:11,149 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-24 23:16:11,149 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-24 23:16:11,149 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-24 23:16:11,149 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-24 23:16:11,149 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-24 23:16:11,150 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-24 23:16:11,150 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-24 23:16:11,150 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-24 23:16:11,150 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-24 23:16:11,151 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-24 23:16:11,151 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-24 23:16:11,151 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-24 23:16:11,151 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> dc0a2ba7c478f7aa42412993fd58e9bd96a2d03f [2020-10-24 23:16:11,506 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-24 23:16:11,532 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-24 23:16:11,535 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-24 23:16:11,537 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-24 23:16:11,538 INFO L275 PluginConnector]: CDTParser initialized [2020-10-24 23:16:11,539 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-newlib/double_req_bl_1032c.c [2020-10-24 23:16:11,630 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ec92671ae/62ced0945aab4770af778c520e36ac69/FLAG0c4b2d3f8 [2020-10-24 23:16:12,244 INFO L306 CDTParser]: Found 1 translation units. [2020-10-24 23:16:12,245 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/double_req_bl_1032c.c [2020-10-24 23:16:12,252 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ec92671ae/62ced0945aab4770af778c520e36ac69/FLAG0c4b2d3f8 [2020-10-24 23:16:12,569 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ec92671ae/62ced0945aab4770af778c520e36ac69 [2020-10-24 23:16:12,572 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-24 23:16:12,579 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-24 23:16:12,581 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-24 23:16:12,581 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-24 23:16:12,589 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-24 23:16:12,590 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 11:16:12" (1/1) ... [2020-10-24 23:16:12,594 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7aed6768 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:16:12, skipping insertion in model container [2020-10-24 23:16:12,594 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 11:16:12" (1/1) ... [2020-10-24 23:16:12,602 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-24 23:16:12,620 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-24 23:16:12,813 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-24 23:16:12,823 INFO L203 MainTranslator]: Completed pre-run [2020-10-24 23:16:12,853 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-24 23:16:12,877 INFO L208 MainTranslator]: Completed translation [2020-10-24 23:16:12,877 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:16:12 WrapperNode [2020-10-24 23:16:12,878 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-24 23:16:12,880 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-24 23:16:12,880 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-24 23:16:12,880 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-24 23:16:12,887 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:16:12" (1/1) ... [2020-10-24 23:16:12,897 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:16:12" (1/1) ... [2020-10-24 23:16:12,927 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-24 23:16:12,928 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-24 23:16:12,928 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-24 23:16:12,928 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-24 23:16:12,938 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:16:12" (1/1) ... [2020-10-24 23:16:12,939 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:16:12" (1/1) ... [2020-10-24 23:16:12,944 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:16:12" (1/1) ... [2020-10-24 23:16:12,945 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:16:12" (1/1) ... [2020-10-24 23:16:12,955 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:16:12" (1/1) ... [2020-10-24 23:16:12,961 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:16:12" (1/1) ... [2020-10-24 23:16:12,963 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:16:12" (1/1) ... [2020-10-24 23:16:12,966 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-24 23:16:12,967 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-24 23:16:12,968 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-24 23:16:12,968 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-24 23:16:12,969 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:16:12" (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 [2020-10-24 23:16:13,061 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-24 23:16:13,062 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-24 23:16:13,062 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-10-24 23:16:13,063 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-24 23:16:13,063 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-10-24 23:16:13,063 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-24 23:16:13,064 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-24 23:16:13,064 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-24 23:16:13,065 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-24 23:16:13,562 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-24 23:16:13,563 INFO L298 CfgBuilder]: Removed 16 assume(true) statements. [2020-10-24 23:16:13,565 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 11:16:13 BoogieIcfgContainer [2020-10-24 23:16:13,565 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-24 23:16:13,567 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-24 23:16:13,567 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-24 23:16:13,570 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-24 23:16:13,571 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 11:16:12" (1/3) ... [2020-10-24 23:16:13,572 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40254983 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 11:16:13, skipping insertion in model container [2020-10-24 23:16:13,572 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:16:12" (2/3) ... [2020-10-24 23:16:13,572 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40254983 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 11:16:13, skipping insertion in model container [2020-10-24 23:16:13,573 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 11:16:13" (3/3) ... [2020-10-24 23:16:13,574 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1032c.c [2020-10-24 23:16:13,588 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-24 23:16:13,593 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-24 23:16:13,607 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-24 23:16:13,635 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-24 23:16:13,635 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-24 23:16:13,636 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-24 23:16:13,636 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-24 23:16:13,636 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-24 23:16:13,636 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-24 23:16:13,636 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-24 23:16:13,637 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-24 23:16:13,670 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states. [2020-10-24 23:16:13,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-24 23:16:13,679 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 23:16:13,680 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 23:16:13,680 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 23:16:13,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 23:16:13,690 INFO L82 PathProgramCache]: Analyzing trace with hash -1058195810, now seen corresponding path program 1 times [2020-10-24 23:16:13,708 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-24 23:16:13,709 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1032253169] [2020-10-24 23:16:13,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 23:16:13,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 23:16:13,887 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 23:16:13,888 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1032253169] [2020-10-24 23:16:13,889 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-24 23:16:13,889 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-24 23:16:13,890 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [216557116] [2020-10-24 23:16:13,895 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-24 23:16:13,896 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-24 23:16:13,911 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-24 23:16:13,912 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-24 23:16:13,914 INFO L87 Difference]: Start difference. First operand 30 states. Second operand 2 states. [2020-10-24 23:16:13,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 23:16:13,938 INFO L93 Difference]: Finished difference Result 57 states and 85 transitions. [2020-10-24 23:16:13,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-24 23:16:13,939 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 13 [2020-10-24 23:16:13,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 23:16:13,951 INFO L225 Difference]: With dead ends: 57 [2020-10-24 23:16:13,951 INFO L226 Difference]: Without dead ends: 26 [2020-10-24 23:16:13,954 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 [2020-10-24 23:16:13,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-10-24 23:16:13,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2020-10-24 23:16:13,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-10-24 23:16:13,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 33 transitions. [2020-10-24 23:16:13,996 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 33 transitions. Word has length 13 [2020-10-24 23:16:13,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 23:16:13,997 INFO L481 AbstractCegarLoop]: Abstraction has 26 states and 33 transitions. [2020-10-24 23:16:13,997 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-24 23:16:13,997 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 33 transitions. [2020-10-24 23:16:13,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-24 23:16:13,998 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 23:16:13,998 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 23:16:13,998 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-24 23:16:13,999 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 23:16:14,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 23:16:14,000 INFO L82 PathProgramCache]: Analyzing trace with hash 1055488069, now seen corresponding path program 1 times [2020-10-24 23:16:14,000 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-24 23:16:14,000 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1784106128] [2020-10-24 23:16:14,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 23:16:14,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-24 23:16:14,158 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-24 23:16:14,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-24 23:16:14,247 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-24 23:16:14,298 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-24 23:16:14,298 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-24 23:16:14,300 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-24 23:16:14,337 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 11:16:14 BoogieIcfgContainer [2020-10-24 23:16:14,337 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-24 23:16:14,338 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-24 23:16:14,338 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-24 23:16:14,339 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-24 23:16:14,339 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 11:16:13" (3/4) ... [2020-10-24 23:16:14,344 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-10-24 23:16:14,344 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-24 23:16:14,347 INFO L168 Benchmark]: Toolchain (without parser) took 1771.72 ms. Allocated memory was 46.1 MB in the beginning and 58.7 MB in the end (delta: 12.6 MB). Free memory was 31.1 MB in the beginning and 39.3 MB in the end (delta: -8.2 MB). Peak memory consumption was 5.7 MB. Max. memory is 16.1 GB. [2020-10-24 23:16:14,348 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 37.7 MB. Free memory was 20.6 MB in the beginning and 20.6 MB in the end (delta: 35.5 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-24 23:16:14,349 INFO L168 Benchmark]: CACSL2BoogieTranslator took 297.57 ms. Allocated memory is still 46.1 MB. Free memory was 30.4 MB in the beginning and 31.5 MB in the end (delta: -1.1 MB). Peak memory consumption was 13.4 MB. Max. memory is 16.1 GB. [2020-10-24 23:16:14,350 INFO L168 Benchmark]: Boogie Procedure Inliner took 47.46 ms. Allocated memory is still 46.1 MB. Free memory was 31.5 MB in the beginning and 29.5 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-24 23:16:14,351 INFO L168 Benchmark]: Boogie Preprocessor took 38.96 ms. Allocated memory is still 46.1 MB. Free memory was 29.5 MB in the beginning and 28.0 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-24 23:16:14,352 INFO L168 Benchmark]: RCFGBuilder took 597.60 ms. Allocated memory is still 46.1 MB. Free memory was 27.9 MB in the beginning and 29.3 MB in the end (delta: -1.4 MB). Peak memory consumption was 11.9 MB. Max. memory is 16.1 GB. [2020-10-24 23:16:14,353 INFO L168 Benchmark]: TraceAbstraction took 770.57 ms. Allocated memory was 46.1 MB in the beginning and 58.7 MB in the end (delta: 12.6 MB). Free memory was 28.8 MB in the beginning and 39.6 MB in the end (delta: -10.8 MB). Peak memory consumption was 18.1 MB. Max. memory is 16.1 GB. [2020-10-24 23:16:14,354 INFO L168 Benchmark]: Witness Printer took 5.79 ms. Allocated memory is still 58.7 MB. Free memory was 39.6 MB in the beginning and 39.3 MB in the end (delta: 350.7 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-24 23:16:14,358 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 37.7 MB. Free memory was 20.6 MB in the beginning and 20.6 MB in the end (delta: 35.5 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 297.57 ms. Allocated memory is still 46.1 MB. Free memory was 30.4 MB in the beginning and 31.5 MB in the end (delta: -1.1 MB). Peak memory consumption was 13.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 47.46 ms. Allocated memory is still 46.1 MB. Free memory was 31.5 MB in the beginning and 29.5 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 38.96 ms. Allocated memory is still 46.1 MB. Free memory was 29.5 MB in the beginning and 28.0 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 597.60 ms. Allocated memory is still 46.1 MB. Free memory was 27.9 MB in the beginning and 29.3 MB in the end (delta: -1.4 MB). Peak memory consumption was 11.9 MB. Max. memory is 16.1 GB. * TraceAbstraction took 770.57 ms. Allocated memory was 46.1 MB in the beginning and 58.7 MB in the end (delta: 12.6 MB). Free memory was 28.8 MB in the beginning and 39.6 MB in the end (delta: -10.8 MB). Peak memory consumption was 18.1 MB. Max. memory is 16.1 GB. * Witness Printer took 5.79 ms. Allocated memory is still 58.7 MB. Free memory was 39.6 MB in the beginning and 39.3 MB in the end (delta: 350.7 kB). Peak memory consumption was 2.1 MB. 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_1032c.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: 0.6s, 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-a4ecdab [2020-10-24 23:16:16,875 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-24 23:16:16,878 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-24 23:16:16,939 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-24 23:16:16,940 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-24 23:16:16,946 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-24 23:16:16,949 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-24 23:16:16,956 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-24 23:16:16,959 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-24 23:16:16,965 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-24 23:16:16,967 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-24 23:16:16,971 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-24 23:16:16,972 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-24 23:16:16,975 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-24 23:16:16,977 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-24 23:16:16,978 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-24 23:16:16,980 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-24 23:16:16,983 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-24 23:16:16,986 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-24 23:16:16,989 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-24 23:16:16,994 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-24 23:16:16,997 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-24 23:16:16,998 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-24 23:16:16,999 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-24 23:16:17,002 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-24 23:16:17,002 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-24 23:16:17,003 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-24 23:16:17,004 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-24 23:16:17,004 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-24 23:16:17,005 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-24 23:16:17,006 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-24 23:16:17,006 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-24 23:16:17,007 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-24 23:16:17,008 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-24 23:16:17,009 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-24 23:16:17,010 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-24 23:16:17,010 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-24 23:16:17,011 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-24 23:16:17,011 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-24 23:16:17,012 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-24 23:16:17,013 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-24 23:16:17,014 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2020-10-24 23:16:17,044 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-24 23:16:17,045 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-24 23:16:17,046 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-24 23:16:17,046 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-24 23:16:17,047 INFO L138 SettingsManager]: * Use SBE=true [2020-10-24 23:16:17,047 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-24 23:16:17,047 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-24 23:16:17,047 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-24 23:16:17,048 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-24 23:16:17,048 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-24 23:16:17,048 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-24 23:16:17,048 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-24 23:16:17,048 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-10-24 23:16:17,049 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-10-24 23:16:17,049 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-24 23:16:17,049 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-24 23:16:17,049 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-24 23:16:17,049 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-24 23:16:17,050 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-24 23:16:17,050 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-24 23:16:17,050 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-24 23:16:17,050 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-24 23:16:17,051 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-24 23:16:17,051 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-24 23:16:17,051 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-24 23:16:17,051 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-24 23:16:17,052 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2020-10-24 23:16:17,052 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-10-24 23:16:17,052 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-24 23:16:17,052 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-24 23:16:17,052 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-24 23:16:17,053 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> dc0a2ba7c478f7aa42412993fd58e9bd96a2d03f [2020-10-24 23:16:17,445 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-24 23:16:17,485 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-24 23:16:17,490 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-24 23:16:17,492 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-24 23:16:17,493 INFO L275 PluginConnector]: CDTParser initialized [2020-10-24 23:16:17,494 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-newlib/double_req_bl_1032c.c [2020-10-24 23:16:17,596 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1f1afef8f/f40dbe2a01e943369c9b901dccf9351b/FLAGc243504cf [2020-10-24 23:16:18,189 INFO L306 CDTParser]: Found 1 translation units. [2020-10-24 23:16:18,190 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/double_req_bl_1032c.c [2020-10-24 23:16:18,198 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1f1afef8f/f40dbe2a01e943369c9b901dccf9351b/FLAGc243504cf [2020-10-24 23:16:18,563 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1f1afef8f/f40dbe2a01e943369c9b901dccf9351b [2020-10-24 23:16:18,567 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-24 23:16:18,576 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-24 23:16:18,581 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-24 23:16:18,581 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-24 23:16:18,586 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-24 23:16:18,587 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 11:16:18" (1/1) ... [2020-10-24 23:16:18,591 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@640a8f3f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:16:18, skipping insertion in model container [2020-10-24 23:16:18,592 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 11:16:18" (1/1) ... [2020-10-24 23:16:18,600 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-24 23:16:18,623 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-24 23:16:18,877 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-24 23:16:18,894 INFO L203 MainTranslator]: Completed pre-run [2020-10-24 23:16:18,929 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-24 23:16:18,954 INFO L208 MainTranslator]: Completed translation [2020-10-24 23:16:18,955 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:16:18 WrapperNode [2020-10-24 23:16:18,955 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-24 23:16:18,957 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-24 23:16:18,957 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-24 23:16:18,957 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-24 23:16:18,966 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:16:18" (1/1) ... [2020-10-24 23:16:18,979 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:16:18" (1/1) ... [2020-10-24 23:16:19,014 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-24 23:16:19,015 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-24 23:16:19,016 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-24 23:16:19,016 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-24 23:16:19,024 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:16:18" (1/1) ... [2020-10-24 23:16:19,024 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:16:18" (1/1) ... [2020-10-24 23:16:19,029 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:16:18" (1/1) ... [2020-10-24 23:16:19,030 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:16:18" (1/1) ... [2020-10-24 23:16:19,040 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:16:18" (1/1) ... [2020-10-24 23:16:19,045 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:16:18" (1/1) ... [2020-10-24 23:16:19,048 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:16:18" (1/1) ... [2020-10-24 23:16:19,052 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-24 23:16:19,054 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-24 23:16:19,054 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-24 23:16:19,054 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-24 23:16:19,055 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:16:18" (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 [2020-10-24 23:16:19,133 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8 [2020-10-24 23:16:19,133 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2020-10-24 23:16:19,133 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-10-24 23:16:19,133 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-24 23:16:19,134 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2020-10-24 23:16:19,134 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-24 23:16:19,134 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-24 23:16:19,134 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2020-10-24 23:16:19,134 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-24 23:16:19,890 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-24 23:16:19,890 INFO L298 CfgBuilder]: Removed 16 assume(true) statements. [2020-10-24 23:16:19,892 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 11:16:19 BoogieIcfgContainer [2020-10-24 23:16:19,892 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-24 23:16:19,894 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-24 23:16:19,894 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-24 23:16:19,897 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-24 23:16:19,897 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 11:16:18" (1/3) ... [2020-10-24 23:16:19,898 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1fb4edd4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 11:16:19, skipping insertion in model container [2020-10-24 23:16:19,898 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:16:18" (2/3) ... [2020-10-24 23:16:19,899 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1fb4edd4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 11:16:19, skipping insertion in model container [2020-10-24 23:16:19,899 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 11:16:19" (3/3) ... [2020-10-24 23:16:19,901 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1032c.c [2020-10-24 23:16:19,913 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-24 23:16:19,918 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-24 23:16:19,937 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-24 23:16:19,961 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-24 23:16:19,961 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-24 23:16:19,962 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-24 23:16:19,962 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-24 23:16:19,962 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-24 23:16:19,962 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-24 23:16:19,962 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-24 23:16:19,962 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-24 23:16:19,975 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states. [2020-10-24 23:16:19,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-24 23:16:19,980 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 23:16:19,981 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 23:16:19,981 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 23:16:19,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 23:16:19,987 INFO L82 PathProgramCache]: Analyzing trace with hash -1058195810, now seen corresponding path program 1 times [2020-10-24 23:16:19,999 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-24 23:16:19,999 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [183211786] [2020-10-24 23:16:19,999 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 [2020-10-24 23:16:20,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 23:16:20,109 INFO L263 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 1 conjunts are in the unsatisfiable core [2020-10-24 23:16:20,114 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-24 23:16:20,130 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 23:16:20,131 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-24 23:16:20,139 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 23:16:20,142 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [183211786] [2020-10-24 23:16:20,144 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-24 23:16:20,144 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-10-24 23:16:20,145 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [643768875] [2020-10-24 23:16:20,150 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-24 23:16:20,150 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-24 23:16:20,166 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-24 23:16:20,168 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-24 23:16:20,170 INFO L87 Difference]: Start difference. First operand 30 states. Second operand 2 states. [2020-10-24 23:16:20,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 23:16:20,190 INFO L93 Difference]: Finished difference Result 57 states and 85 transitions. [2020-10-24 23:16:20,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-24 23:16:20,192 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 13 [2020-10-24 23:16:20,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 23:16:20,203 INFO L225 Difference]: With dead ends: 57 [2020-10-24 23:16:20,204 INFO L226 Difference]: Without dead ends: 26 [2020-10-24 23:16:20,207 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 [2020-10-24 23:16:20,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-10-24 23:16:20,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2020-10-24 23:16:20,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-10-24 23:16:20,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 33 transitions. [2020-10-24 23:16:20,246 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 33 transitions. Word has length 13 [2020-10-24 23:16:20,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 23:16:20,246 INFO L481 AbstractCegarLoop]: Abstraction has 26 states and 33 transitions. [2020-10-24 23:16:20,246 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-24 23:16:20,247 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 33 transitions. [2020-10-24 23:16:20,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-24 23:16:20,254 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 23:16:20,254 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 23:16:20,469 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-10-24 23:16:20,469 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 23:16:20,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 23:16:20,472 INFO L82 PathProgramCache]: Analyzing trace with hash 1055488069, now seen corresponding path program 1 times [2020-10-24 23:16:20,473 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-24 23:16:20,473 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1267597329] [2020-10-24 23:16:20,474 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 [2020-10-24 23:16:20,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 23:16:20,632 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-24 23:16:20,635 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-24 23:16:20,899 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 23:16:20,899 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-24 23:16:21,066 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 23:16:21,066 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1267597329] [2020-10-24 23:16:21,067 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-24 23:16:21,067 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2020-10-24 23:16:21,067 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1425570987] [2020-10-24 23:16:21,069 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-24 23:16:21,069 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-24 23:16:21,070 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-24 23:16:21,070 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-10-24 23:16:21,071 INFO L87 Difference]: Start difference. First operand 26 states and 33 transitions. Second operand 8 states. [2020-10-24 23:16:21,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 23:16:21,430 INFO L93 Difference]: Finished difference Result 34 states and 40 transitions. [2020-10-24 23:16:21,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-24 23:16:21,432 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 15 [2020-10-24 23:16:21,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 23:16:21,433 INFO L225 Difference]: With dead ends: 34 [2020-10-24 23:16:21,433 INFO L226 Difference]: Without dead ends: 16 [2020-10-24 23:16:21,437 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 [2020-10-24 23:16:21,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2020-10-24 23:16:21,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2020-10-24 23:16:21,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2020-10-24 23:16:21,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 15 transitions. [2020-10-24 23:16:21,444 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 15 transitions. Word has length 15 [2020-10-24 23:16:21,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 23:16:21,446 INFO L481 AbstractCegarLoop]: Abstraction has 16 states and 15 transitions. [2020-10-24 23:16:21,446 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-24 23:16:21,446 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 15 transitions. [2020-10-24 23:16:21,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-24 23:16:21,449 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 23:16:21,449 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 23:16:21,650 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-10-24 23:16:21,651 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 23:16:21,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 23:16:21,653 INFO L82 PathProgramCache]: Analyzing trace with hash 709099857, now seen corresponding path program 1 times [2020-10-24 23:16:21,654 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-24 23:16:21,654 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1007076121] [2020-10-24 23:16:21,654 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 [2020-10-24 23:16:21,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-24 23:16:21,878 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-24 23:16:22,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-24 23:16:22,033 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-24 23:16:22,092 INFO L173 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2020-10-24 23:16:22,092 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-24 23:16:22,293 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-10-24 23:16:22,326 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 11:16:22 BoogieIcfgContainer [2020-10-24 23:16:22,326 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-24 23:16:22,327 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-24 23:16:22,327 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-24 23:16:22,327 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-24 23:16:22,328 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 11:16:19" (3/4) ... [2020-10-24 23:16:22,330 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-10-24 23:16:22,386 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-24 23:16:22,386 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-24 23:16:22,389 INFO L168 Benchmark]: Toolchain (without parser) took 3817.52 ms. Allocated memory was 52.4 MB in the beginning and 81.8 MB in the end (delta: 29.4 MB). Free memory was 28.9 MB in the beginning and 57.4 MB in the end (delta: -28.5 MB). Peak memory consumption was 2.7 MB. Max. memory is 16.1 GB. [2020-10-24 23:16:22,389 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 52.4 MB. Free memory was 35.9 MB in the beginning and 35.9 MB in the end (delta: 75.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-24 23:16:22,390 INFO L168 Benchmark]: CACSL2BoogieTranslator took 375.35 ms. Allocated memory is still 52.4 MB. Free memory was 28.3 MB in the beginning and 30.4 MB in the end (delta: -2.1 MB). Peak memory consumption was 5.5 MB. Max. memory is 16.1 GB. [2020-10-24 23:16:22,391 INFO L168 Benchmark]: Boogie Procedure Inliner took 57.91 ms. Allocated memory is still 52.4 MB. Free memory was 30.2 MB in the beginning and 28.4 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-24 23:16:22,392 INFO L168 Benchmark]: Boogie Preprocessor took 36.26 ms. Allocated memory is still 52.4 MB. Free memory was 28.4 MB in the beginning and 26.7 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-24 23:16:22,393 INFO L168 Benchmark]: RCFGBuilder took 838.00 ms. Allocated memory was 52.4 MB in the beginning and 67.1 MB in the end (delta: 14.7 MB). Free memory was 26.7 MB in the beginning and 33.4 MB in the end (delta: -6.7 MB). Peak memory consumption was 10.3 MB. Max. memory is 16.1 GB. [2020-10-24 23:16:22,394 INFO L168 Benchmark]: TraceAbstraction took 2432.61 ms. Allocated memory was 67.1 MB in the beginning and 81.8 MB in the end (delta: 14.7 MB). Free memory was 32.9 MB in the beginning and 59.9 MB in the end (delta: -27.0 MB). Peak memory consumption was 5.7 MB. Max. memory is 16.1 GB. [2020-10-24 23:16:22,394 INFO L168 Benchmark]: Witness Printer took 59.29 ms. Allocated memory is still 81.8 MB. Free memory was 59.9 MB in the beginning and 57.4 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-24 23:16:22,400 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 52.4 MB. Free memory was 35.9 MB in the beginning and 35.9 MB in the end (delta: 75.4 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 375.35 ms. Allocated memory is still 52.4 MB. Free memory was 28.3 MB in the beginning and 30.4 MB in the end (delta: -2.1 MB). Peak memory consumption was 5.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 57.91 ms. Allocated memory is still 52.4 MB. Free memory was 30.2 MB in the beginning and 28.4 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 36.26 ms. Allocated memory is still 52.4 MB. Free memory was 28.4 MB in the beginning and 26.7 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 838.00 ms. Allocated memory was 52.4 MB in the beginning and 67.1 MB in the end (delta: 14.7 MB). Free memory was 26.7 MB in the beginning and 33.4 MB in the end (delta: -6.7 MB). Peak memory consumption was 10.3 MB. Max. memory is 16.1 GB. * TraceAbstraction took 2432.61 ms. Allocated memory was 67.1 MB in the beginning and 81.8 MB in the end (delta: 14.7 MB). Free memory was 32.9 MB in the beginning and 59.9 MB in the end (delta: -27.0 MB). Peak memory consumption was 5.7 MB. Max. memory is 16.1 GB. * Witness Printer took 59.29 ms. Allocated memory is still 81.8 MB. Free memory was 59.9 MB in the beginning and 57.4 MB in the end (delta: 2.5 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_1032c.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: 2.3s, 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, 2276 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...