./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/float-newlib/double_req_bl_1012a.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9a8b2e8d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/float-newlib/double_req_bl_1012a.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 1df0ba28598e6a59f0398ecb9ba7a5975e0ea337 .............................................................................................................................................................................................................................................................................................. Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/float-newlib/double_req_bl_1012a.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 1df0ba28598e6a59f0398ecb9ba7a5975e0ea337 .......................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.1.25-9a8b2e8 [2020-10-20 00:32:22,847 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-20 00:32:22,849 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-20 00:32:22,877 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-20 00:32:22,878 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-20 00:32:22,879 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-20 00:32:22,880 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-20 00:32:22,882 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-20 00:32:22,884 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-20 00:32:22,886 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-20 00:32:22,887 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-20 00:32:22,888 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-20 00:32:22,888 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-20 00:32:22,890 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-20 00:32:22,891 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-20 00:32:22,892 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-20 00:32:22,893 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-20 00:32:22,894 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-20 00:32:22,896 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-20 00:32:22,898 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-20 00:32:22,908 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-20 00:32:22,910 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-20 00:32:22,914 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-20 00:32:22,915 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-20 00:32:22,921 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-20 00:32:22,921 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-20 00:32:22,922 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-20 00:32:22,923 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-20 00:32:22,923 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-20 00:32:22,924 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-20 00:32:22,927 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-20 00:32:22,928 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-20 00:32:22,930 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-20 00:32:22,931 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-20 00:32:22,933 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-20 00:32:22,934 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-20 00:32:22,935 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-20 00:32:22,935 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-20 00:32:22,935 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-20 00:32:22,936 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-20 00:32:22,937 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-20 00:32:22,937 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-20 00:32:22,961 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-20 00:32:22,961 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-20 00:32:22,963 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-20 00:32:22,963 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-20 00:32:22,963 INFO L138 SettingsManager]: * Use SBE=true [2020-10-20 00:32:22,963 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-20 00:32:22,963 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-20 00:32:22,964 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-20 00:32:22,964 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-20 00:32:22,964 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-20 00:32:22,964 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-20 00:32:22,964 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-20 00:32:22,964 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-20 00:32:22,965 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-20 00:32:22,965 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-20 00:32:22,965 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-20 00:32:22,965 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-20 00:32:22,965 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-20 00:32:22,966 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-20 00:32:22,966 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-20 00:32:22,966 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-20 00:32:22,966 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-20 00:32:22,966 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-20 00:32:22,967 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-20 00:32:22,967 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-20 00:32:22,967 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-20 00:32:22,967 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-20 00:32:22,967 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-20 00:32:22,968 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-20 00:32:22,968 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1df0ba28598e6a59f0398ecb9ba7a5975e0ea337 [2020-10-20 00:32:23,197 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-20 00:32:23,210 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-20 00:32:23,214 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-20 00:32:23,216 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-20 00:32:23,216 INFO L275 PluginConnector]: CDTParser initialized [2020-10-20 00:32:23,217 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-newlib/double_req_bl_1012a.c [2020-10-20 00:32:23,301 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/174444219/df223eb8beeb4ee78d4ef4e1a715b60a/FLAGca07dfbaa [2020-10-20 00:32:23,803 INFO L306 CDTParser]: Found 1 translation units. [2020-10-20 00:32:23,803 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/double_req_bl_1012a.c [2020-10-20 00:32:23,819 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/174444219/df223eb8beeb4ee78d4ef4e1a715b60a/FLAGca07dfbaa [2020-10-20 00:32:24,222 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/174444219/df223eb8beeb4ee78d4ef4e1a715b60a [2020-10-20 00:32:24,225 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-20 00:32:24,231 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-20 00:32:24,232 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-20 00:32:24,232 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-20 00:32:24,236 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-20 00:32:24,237 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 12:32:24" (1/1) ... [2020-10-20 00:32:24,241 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@33127e4d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:32:24, skipping insertion in model container [2020-10-20 00:32:24,241 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 12:32:24" (1/1) ... [2020-10-20 00:32:24,249 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-20 00:32:24,272 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-20 00:32:24,538 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 00:32:24,549 INFO L203 MainTranslator]: Completed pre-run [2020-10-20 00:32:24,579 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 00:32:24,597 INFO L208 MainTranslator]: Completed translation [2020-10-20 00:32:24,598 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:32:24 WrapperNode [2020-10-20 00:32:24,598 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-20 00:32:24,599 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-20 00:32:24,599 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-20 00:32:24,600 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-20 00:32:24,608 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:32:24" (1/1) ... [2020-10-20 00:32:24,619 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:32:24" (1/1) ... [2020-10-20 00:32:24,644 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-20 00:32:24,644 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-20 00:32:24,644 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-20 00:32:24,645 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-20 00:32:24,653 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:32:24" (1/1) ... [2020-10-20 00:32:24,653 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:32:24" (1/1) ... [2020-10-20 00:32:24,656 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:32:24" (1/1) ... [2020-10-20 00:32:24,656 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:32:24" (1/1) ... [2020-10-20 00:32:24,664 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:32:24" (1/1) ... [2020-10-20 00:32:24,669 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:32:24" (1/1) ... [2020-10-20 00:32:24,671 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:32:24" (1/1) ... [2020-10-20 00:32:24,673 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-20 00:32:24,674 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-20 00:32:24,674 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-20 00:32:24,674 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-20 00:32:24,675 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:32:24" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-20 00:32:24,734 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-20 00:32:24,735 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-20 00:32:24,735 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-10-20 00:32:24,735 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-20 00:32:24,735 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-10-20 00:32:24,735 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-20 00:32:24,735 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-20 00:32:24,741 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-20 00:32:24,742 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-20 00:32:25,165 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-20 00:32:25,165 INFO L298 CfgBuilder]: Removed 16 assume(true) statements. [2020-10-20 00:32:25,168 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 12:32:25 BoogieIcfgContainer [2020-10-20 00:32:25,168 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-20 00:32:25,170 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-20 00:32:25,170 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-20 00:32:25,174 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-20 00:32:25,174 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.10 12:32:24" (1/3) ... [2020-10-20 00:32:25,176 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ceacf11 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 12:32:25, skipping insertion in model container [2020-10-20 00:32:25,188 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:32:24" (2/3) ... [2020-10-20 00:32:25,189 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ceacf11 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 12:32:25, skipping insertion in model container [2020-10-20 00:32:25,189 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 12:32:25" (3/3) ... [2020-10-20 00:32:25,191 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1012a.c [2020-10-20 00:32:25,205 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-20 00:32:25,215 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-20 00:32:25,232 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-20 00:32:25,262 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-20 00:32:25,263 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-20 00:32:25,263 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-20 00:32:25,263 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-20 00:32:25,263 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-20 00:32:25,264 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-20 00:32:25,264 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-20 00:32:25,264 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-20 00:32:25,282 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states. [2020-10-20 00:32:25,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-20 00:32:25,290 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 00:32:25,291 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 00:32:25,292 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 00:32:25,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 00:32:25,300 INFO L82 PathProgramCache]: Analyzing trace with hash -969083750, now seen corresponding path program 1 times [2020-10-20 00:32:25,312 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 00:32:25,313 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2048885388] [2020-10-20 00:32:25,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 00:32:25,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 00:32:25,459 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 00:32:25,460 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2048885388] [2020-10-20 00:32:25,461 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 00:32:25,461 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-20 00:32:25,462 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [531908699] [2020-10-20 00:32:25,467 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-20 00:32:25,468 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 00:32:25,481 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-20 00:32:25,482 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-20 00:32:25,484 INFO L87 Difference]: Start difference. First operand 19 states. Second operand 2 states. [2020-10-20 00:32:25,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 00:32:25,503 INFO L93 Difference]: Finished difference Result 35 states and 47 transitions. [2020-10-20 00:32:25,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-20 00:32:25,504 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 11 [2020-10-20 00:32:25,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 00:32:25,515 INFO L225 Difference]: With dead ends: 35 [2020-10-20 00:32:25,516 INFO L226 Difference]: Without dead ends: 15 [2020-10-20 00:32:25,519 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-20 00:32:25,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2020-10-20 00:32:25,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2020-10-20 00:32:25,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2020-10-20 00:32:25,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 14 transitions. [2020-10-20 00:32:25,571 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 14 transitions. Word has length 11 [2020-10-20 00:32:25,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 00:32:25,571 INFO L481 AbstractCegarLoop]: Abstraction has 15 states and 14 transitions. [2020-10-20 00:32:25,571 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-20 00:32:25,572 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 14 transitions. [2020-10-20 00:32:25,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-20 00:32:25,572 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 00:32:25,573 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 00:32:25,573 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-20 00:32:25,573 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 00:32:25,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 00:32:25,574 INFO L82 PathProgramCache]: Analyzing trace with hash 657368916, now seen corresponding path program 1 times [2020-10-20 00:32:25,574 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 00:32:25,574 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [182636062] [2020-10-20 00:32:25,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 00:32:25,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 00:32:25,698 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 00:32:25,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 00:32:25,832 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 00:32:25,895 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 00:32:25,896 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-20 00:32:25,898 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-20 00:32:25,944 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.10 12:32:25 BoogieIcfgContainer [2020-10-20 00:32:25,944 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-20 00:32:25,945 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-20 00:32:25,945 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-20 00:32:25,945 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-20 00:32:25,946 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 12:32:25" (3/4) ... [2020-10-20 00:32:25,950 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-10-20 00:32:25,950 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-20 00:32:25,954 INFO L168 Benchmark]: Toolchain (without parser) took 1725.90 ms. Allocated memory was 40.9 MB in the beginning and 44.0 MB in the end (delta: 3.1 MB). Free memory was 18.4 MB in the beginning and 9.3 MB in the end (delta: 9.1 MB). Peak memory consumption was 12.3 MB. Max. memory is 14.3 GB. [2020-10-20 00:32:25,955 INFO L168 Benchmark]: CDTParser took 0.37 ms. Allocated memory is still 31.5 MB. Free memory was 7.5 MB in the beginning and 7.4 MB in the end (delta: 42.0 kB). Peak memory consumption was 42.0 kB. Max. memory is 14.3 GB. [2020-10-20 00:32:25,956 INFO L168 Benchmark]: CACSL2BoogieTranslator took 366.87 ms. Allocated memory was 40.9 MB in the beginning and 41.9 MB in the end (delta: 1.0 MB). Free memory was 17.5 MB in the beginning and 16.5 MB in the end (delta: 1.0 MB). Peak memory consumption was 8.9 MB. Max. memory is 14.3 GB. [2020-10-20 00:32:25,957 INFO L168 Benchmark]: Boogie Procedure Inliner took 44.87 ms. Allocated memory is still 41.9 MB. Free memory was 16.5 MB in the beginning and 14.5 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 14.3 GB. [2020-10-20 00:32:25,958 INFO L168 Benchmark]: Boogie Preprocessor took 29.34 ms. Allocated memory is still 41.9 MB. Free memory was 14.5 MB in the beginning and 12.8 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 14.3 GB. [2020-10-20 00:32:25,959 INFO L168 Benchmark]: RCFGBuilder took 494.01 ms. Allocated memory was 41.9 MB in the beginning and 44.0 MB in the end (delta: 2.1 MB). Free memory was 12.8 MB in the beginning and 11.5 MB in the end (delta: 1.4 MB). Peak memory consumption was 3.9 MB. Max. memory is 14.3 GB. [2020-10-20 00:32:25,961 INFO L168 Benchmark]: TraceAbstraction took 774.94 ms. Allocated memory is still 44.0 MB. Free memory was 11.0 MB in the beginning and 9.5 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.5 MB. Max. memory is 14.3 GB. [2020-10-20 00:32:25,966 INFO L168 Benchmark]: Witness Printer took 5.73 ms. Allocated memory is still 44.0 MB. Free memory was 9.5 MB in the beginning and 9.3 MB in the end (delta: 273.7 kB). Peak memory consumption was 273.7 kB. Max. memory is 14.3 GB. [2020-10-20 00:32:25,980 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.37 ms. Allocated memory is still 31.5 MB. Free memory was 7.5 MB in the beginning and 7.4 MB in the end (delta: 42.0 kB). Peak memory consumption was 42.0 kB. Max. memory is 14.3 GB. * CACSL2BoogieTranslator took 366.87 ms. Allocated memory was 40.9 MB in the beginning and 41.9 MB in the end (delta: 1.0 MB). Free memory was 17.5 MB in the beginning and 16.5 MB in the end (delta: 1.0 MB). Peak memory consumption was 8.9 MB. Max. memory is 14.3 GB. * Boogie Procedure Inliner took 44.87 ms. Allocated memory is still 41.9 MB. Free memory was 16.5 MB in the beginning and 14.5 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 14.3 GB. * Boogie Preprocessor took 29.34 ms. Allocated memory is still 41.9 MB. Free memory was 14.5 MB in the beginning and 12.8 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 14.3 GB. * RCFGBuilder took 494.01 ms. Allocated memory was 41.9 MB in the beginning and 44.0 MB in the end (delta: 2.1 MB). Free memory was 12.8 MB in the beginning and 11.5 MB in the end (delta: 1.4 MB). Peak memory consumption was 3.9 MB. Max. memory is 14.3 GB. * TraceAbstraction took 774.94 ms. Allocated memory is still 44.0 MB. Free memory was 11.0 MB in the beginning and 9.5 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.5 MB. Max. memory is 14.3 GB. * Witness Printer took 5.73 ms. Allocated memory is still 44.0 MB. Free memory was 9.5 MB in the beginning and 9.3 MB in the end (delta: 273.7 kB). Peak memory consumption was 273.7 kB. Max. memory is 14.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 3]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of bitwiseOr at line 41, overapproximation of someBinaryArithmeticDOUBLEoperation at line 70, overapproximation of bitwiseAnd at line 40. Possible FailurePath: [L70] double x = 1.0 / 0.0; [L47] __uint32_t high; [L49] ieee_double_shape_type gh_u; [L50] gh_u.value = (x) [L51] EXPR gh_u.parts.msw [L51] (high) = gh_u.parts.msw [L54] ieee_double_shape_type sh_u; [L55] sh_u.value = (x) [L56] sh_u.parts.msw = (high & 0x7fffffff) [L57] EXPR sh_u.value [L57] (x) = sh_u.value [L59] return x; [L71] double res = fabs_double(x); [L33] __int32_t hx, lx; [L35] ieee_double_shape_type ew_u; [L36] ew_u.value = (x) [L37] EXPR ew_u.parts.msw [L37] (hx) = ew_u.parts.msw [L38] EXPR ew_u.parts.lsw [L38] (lx) = ew_u.parts.lsw [L40] hx &= 0x7fffffff [L41] hx |= (__uint32_t)(lx | (-lx)) >> 31 [L42] hx = 0x7ff00000 - hx [L43] return 1 - (int)((__uint32_t)(hx | (-hx)) >> 31); [L74] COND TRUE !isinf_double(res) [L3] __assert_fail("0", "double_req_bl_1012a.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 19 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: 17 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=19occurred 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, 25 NumberOfCodeBlocks, 25 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 10 ConstructedInterpolants, 0 QuantifiedInterpolants, 100 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request... ### Bit-precise run ### This is Ultimate 0.1.25-9a8b2e8 [2020-10-20 00:32:28,216 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-20 00:32:28,220 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-20 00:32:28,265 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-20 00:32:28,266 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-20 00:32:28,279 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-20 00:32:28,281 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-20 00:32:28,284 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-20 00:32:28,287 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-20 00:32:28,290 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-20 00:32:28,291 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-20 00:32:28,294 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-20 00:32:28,295 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-20 00:32:28,299 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-20 00:32:28,300 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-20 00:32:28,301 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-20 00:32:28,301 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-20 00:32:28,302 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-20 00:32:28,304 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-20 00:32:28,305 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-20 00:32:28,307 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-20 00:32:28,308 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-20 00:32:28,309 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-20 00:32:28,310 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-20 00:32:28,312 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-20 00:32:28,312 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-20 00:32:28,313 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-20 00:32:28,322 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-20 00:32:28,323 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-20 00:32:28,324 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-20 00:32:28,324 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-20 00:32:28,325 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-20 00:32:28,329 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-20 00:32:28,330 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-20 00:32:28,331 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-20 00:32:28,331 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-20 00:32:28,332 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-20 00:32:28,333 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-20 00:32:28,333 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-20 00:32:28,334 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-20 00:32:28,334 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-20 00:32:28,338 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2020-10-20 00:32:28,380 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-20 00:32:28,380 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-20 00:32:28,382 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-20 00:32:28,382 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-20 00:32:28,382 INFO L138 SettingsManager]: * Use SBE=true [2020-10-20 00:32:28,382 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-20 00:32:28,383 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-20 00:32:28,383 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-20 00:32:28,383 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-20 00:32:28,383 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-20 00:32:28,384 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-20 00:32:28,384 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-20 00:32:28,385 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-10-20 00:32:28,385 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-10-20 00:32:28,385 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-20 00:32:28,386 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-20 00:32:28,386 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-20 00:32:28,386 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-20 00:32:28,386 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-20 00:32:28,387 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-20 00:32:28,387 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-20 00:32:28,387 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-20 00:32:28,387 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-20 00:32:28,387 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-20 00:32:28,388 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-20 00:32:28,388 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-20 00:32:28,388 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2020-10-20 00:32:28,388 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-10-20 00:32:28,388 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-20 00:32:28,388 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-20 00:32:28,389 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-20 00:32:28,389 INFO L138 SettingsManager]: * Logic for external solver=AUFBV Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1df0ba28598e6a59f0398ecb9ba7a5975e0ea337 [2020-10-20 00:32:28,603 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-20 00:32:28,615 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-20 00:32:28,618 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-20 00:32:28,620 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-20 00:32:28,620 INFO L275 PluginConnector]: CDTParser initialized [2020-10-20 00:32:28,621 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-newlib/double_req_bl_1012a.c [2020-10-20 00:32:28,682 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2db8940a7/b3efb4f82c1845ba84c6a8a1e101d479/FLAG55f17af89 [2020-10-20 00:32:29,170 INFO L306 CDTParser]: Found 1 translation units. [2020-10-20 00:32:29,172 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/double_req_bl_1012a.c [2020-10-20 00:32:29,185 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2db8940a7/b3efb4f82c1845ba84c6a8a1e101d479/FLAG55f17af89 [2020-10-20 00:32:29,545 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2db8940a7/b3efb4f82c1845ba84c6a8a1e101d479 [2020-10-20 00:32:29,548 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-20 00:32:29,566 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-20 00:32:29,567 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-20 00:32:29,568 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-20 00:32:29,571 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-20 00:32:29,572 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 12:32:29" (1/1) ... [2020-10-20 00:32:29,576 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@53c697cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:32:29, skipping insertion in model container [2020-10-20 00:32:29,576 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 12:32:29" (1/1) ... [2020-10-20 00:32:29,584 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-20 00:32:29,609 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-20 00:32:29,854 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 00:32:29,870 INFO L203 MainTranslator]: Completed pre-run [2020-10-20 00:32:29,901 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 00:32:29,925 INFO L208 MainTranslator]: Completed translation [2020-10-20 00:32:29,925 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:32:29 WrapperNode [2020-10-20 00:32:29,925 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-20 00:32:29,926 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-20 00:32:29,926 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-20 00:32:29,927 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-20 00:32:29,935 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:32:29" (1/1) ... [2020-10-20 00:32:29,947 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:32:29" (1/1) ... [2020-10-20 00:32:29,970 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-20 00:32:29,970 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-20 00:32:29,970 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-20 00:32:29,970 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-20 00:32:29,980 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:32:29" (1/1) ... [2020-10-20 00:32:29,981 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:32:29" (1/1) ... [2020-10-20 00:32:29,985 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:32:29" (1/1) ... [2020-10-20 00:32:29,985 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:32:29" (1/1) ... [2020-10-20 00:32:29,996 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:32:29" (1/1) ... [2020-10-20 00:32:30,001 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:32:29" (1/1) ... [2020-10-20 00:32:30,003 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:32:29" (1/1) ... [2020-10-20 00:32:30,007 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-20 00:32:30,008 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-20 00:32:30,008 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-20 00:32:30,008 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-20 00:32:30,009 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:32:29" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-20 00:32:30,071 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8 [2020-10-20 00:32:30,072 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2020-10-20 00:32:30,072 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-10-20 00:32:30,072 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-20 00:32:30,072 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2020-10-20 00:32:30,073 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-20 00:32:30,073 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-20 00:32:30,073 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2020-10-20 00:32:30,073 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-20 00:32:30,424 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-20 00:32:30,424 INFO L298 CfgBuilder]: Removed 16 assume(true) statements. [2020-10-20 00:32:30,426 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 12:32:30 BoogieIcfgContainer [2020-10-20 00:32:30,427 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-20 00:32:30,428 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-20 00:32:30,428 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-20 00:32:30,432 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-20 00:32:30,433 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.10 12:32:29" (1/3) ... [2020-10-20 00:32:30,434 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33955007 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 12:32:30, skipping insertion in model container [2020-10-20 00:32:30,434 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:32:29" (2/3) ... [2020-10-20 00:32:30,434 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33955007 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 12:32:30, skipping insertion in model container [2020-10-20 00:32:30,434 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 12:32:30" (3/3) ... [2020-10-20 00:32:30,437 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1012a.c [2020-10-20 00:32:30,450 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-20 00:32:30,458 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-20 00:32:30,479 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-20 00:32:30,513 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-20 00:32:30,513 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-20 00:32:30,513 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-20 00:32:30,513 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-20 00:32:30,514 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-20 00:32:30,514 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-20 00:32:30,514 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-20 00:32:30,514 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-20 00:32:30,535 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states. [2020-10-20 00:32:30,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-20 00:32:30,547 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 00:32:30,549 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 00:32:30,549 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 00:32:30,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 00:32:30,556 INFO L82 PathProgramCache]: Analyzing trace with hash -969083750, now seen corresponding path program 1 times [2020-10-20 00:32:30,571 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-20 00:32:30,571 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [683279274] [2020-10-20 00:32:30,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2020-10-20 00:32:30,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 00:32:30,720 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 1 conjunts are in the unsatisfiable core [2020-10-20 00:32:30,726 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 00:32:30,744 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 00:32:30,744 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-20 00:32:30,749 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 00:32:30,753 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [683279274] [2020-10-20 00:32:30,754 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-20 00:32:30,754 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-10-20 00:32:30,755 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [404231514] [2020-10-20 00:32:30,761 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-20 00:32:30,761 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-20 00:32:30,775 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-20 00:32:30,776 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-20 00:32:30,778 INFO L87 Difference]: Start difference. First operand 19 states. Second operand 2 states. [2020-10-20 00:32:30,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 00:32:30,797 INFO L93 Difference]: Finished difference Result 35 states and 47 transitions. [2020-10-20 00:32:30,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-20 00:32:30,799 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 11 [2020-10-20 00:32:30,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 00:32:30,809 INFO L225 Difference]: With dead ends: 35 [2020-10-20 00:32:30,809 INFO L226 Difference]: Without dead ends: 15 [2020-10-20 00:32:30,813 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-20 00:32:30,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2020-10-20 00:32:30,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2020-10-20 00:32:30,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2020-10-20 00:32:30,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 14 transitions. [2020-10-20 00:32:30,846 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 14 transitions. Word has length 11 [2020-10-20 00:32:30,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 00:32:30,847 INFO L481 AbstractCegarLoop]: Abstraction has 15 states and 14 transitions. [2020-10-20 00:32:30,847 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-20 00:32:30,847 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 14 transitions. [2020-10-20 00:32:30,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-20 00:32:30,848 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 00:32:30,848 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 00:32:31,069 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-10-20 00:32:31,070 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 00:32:31,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 00:32:31,071 INFO L82 PathProgramCache]: Analyzing trace with hash 657368916, now seen corresponding path program 1 times [2020-10-20 00:32:31,074 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-20 00:32:31,074 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1931732277] [2020-10-20 00:32:31,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2020-10-20 00:32:31,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 00:32:31,350 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 00:32:31,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 00:32:31,528 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 00:32:31,598 INFO L173 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2020-10-20 00:32:31,599 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-20 00:32:31,800 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-10-20 00:32:31,843 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.10 12:32:31 BoogieIcfgContainer [2020-10-20 00:32:31,843 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-20 00:32:31,843 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-20 00:32:31,844 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-20 00:32:31,844 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-20 00:32:31,845 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 12:32:30" (3/4) ... [2020-10-20 00:32:31,847 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-10-20 00:32:31,903 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-20 00:32:31,904 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-20 00:32:31,906 INFO L168 Benchmark]: Toolchain (without parser) took 2355.85 ms. Allocated memory was 34.6 MB in the beginning and 50.3 MB in the end (delta: 15.7 MB). Free memory was 7.4 MB in the beginning and 16.1 MB in the end (delta: -8.7 MB). Peak memory consumption was 7.0 MB. Max. memory is 14.3 GB. [2020-10-20 00:32:31,907 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 34.6 MB. Free memory was 12.9 MB in the beginning and 12.8 MB in the end (delta: 47.2 kB). Peak memory consumption was 47.2 kB. Max. memory is 14.3 GB. [2020-10-20 00:32:31,908 INFO L168 Benchmark]: CACSL2BoogieTranslator took 358.50 ms. Allocated memory was 37.7 MB in the beginning and 45.1 MB in the end (delta: 7.3 MB). Free memory was 21.1 MB in the beginning and 25.2 MB in the end (delta: -4.1 MB). Peak memory consumption was 9.8 MB. Max. memory is 14.3 GB. [2020-10-20 00:32:31,909 INFO L168 Benchmark]: Boogie Procedure Inliner took 43.60 ms. Allocated memory is still 45.1 MB. Free memory was 25.1 MB in the beginning and 23.2 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 14.3 GB. [2020-10-20 00:32:31,909 INFO L168 Benchmark]: Boogie Preprocessor took 37.20 ms. Allocated memory is still 45.1 MB. Free memory was 23.2 MB in the beginning and 21.4 MB in the end (delta: 1.8 MB). Peak memory consumption was 1.8 MB. Max. memory is 14.3 GB. [2020-10-20 00:32:31,910 INFO L168 Benchmark]: RCFGBuilder took 419.21 ms. Allocated memory was 45.1 MB in the beginning and 47.7 MB in the end (delta: 2.6 MB). Free memory was 21.3 MB in the beginning and 18.2 MB in the end (delta: 3.1 MB). Peak memory consumption was 10.8 MB. Max. memory is 14.3 GB. [2020-10-20 00:32:31,911 INFO L168 Benchmark]: TraceAbstraction took 1414.77 ms. Allocated memory was 47.7 MB in the beginning and 50.3 MB in the end (delta: 2.6 MB). Free memory was 17.7 MB in the beginning and 19.1 MB in the end (delta: -1.4 MB). Peak memory consumption was 1.2 MB. Max. memory is 14.3 GB. [2020-10-20 00:32:31,912 INFO L168 Benchmark]: Witness Printer took 60.30 ms. Allocated memory is still 50.3 MB. Free memory was 18.7 MB in the beginning and 16.1 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 14.3 GB. [2020-10-20 00:32:31,916 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 34.6 MB. Free memory was 12.9 MB in the beginning and 12.8 MB in the end (delta: 47.2 kB). Peak memory consumption was 47.2 kB. Max. memory is 14.3 GB. * CACSL2BoogieTranslator took 358.50 ms. Allocated memory was 37.7 MB in the beginning and 45.1 MB in the end (delta: 7.3 MB). Free memory was 21.1 MB in the beginning and 25.2 MB in the end (delta: -4.1 MB). Peak memory consumption was 9.8 MB. Max. memory is 14.3 GB. * Boogie Procedure Inliner took 43.60 ms. Allocated memory is still 45.1 MB. Free memory was 25.1 MB in the beginning and 23.2 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 14.3 GB. * Boogie Preprocessor took 37.20 ms. Allocated memory is still 45.1 MB. Free memory was 23.2 MB in the beginning and 21.4 MB in the end (delta: 1.8 MB). Peak memory consumption was 1.8 MB. Max. memory is 14.3 GB. * RCFGBuilder took 419.21 ms. Allocated memory was 45.1 MB in the beginning and 47.7 MB in the end (delta: 2.6 MB). Free memory was 21.3 MB in the beginning and 18.2 MB in the end (delta: 3.1 MB). Peak memory consumption was 10.8 MB. Max. memory is 14.3 GB. * TraceAbstraction took 1414.77 ms. Allocated memory was 47.7 MB in the beginning and 50.3 MB in the end (delta: 2.6 MB). Free memory was 17.7 MB in the beginning and 19.1 MB in the end (delta: -1.4 MB). Peak memory consumption was 1.2 MB. Max. memory is 14.3 GB. * Witness Printer took 60.30 ms. Allocated memory is still 50.3 MB. Free memory was 18.7 MB in the beginning and 16.1 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 14.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 3]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L70] double x = 1.0 / 0.0; [L47] __uint32_t high; [L49] ieee_double_shape_type gh_u; [L50] gh_u.value = (x) [L51] EXPR gh_u.parts.msw [L51] (high) = gh_u.parts.msw [L54] ieee_double_shape_type sh_u; [L55] sh_u.value = (x) [L56] sh_u.parts.msw = (high & 0x7fffffff) [L57] EXPR sh_u.value [L57] (x) = sh_u.value [L59] return x; [L71] double res = fabs_double(x); [L33] __int32_t hx, lx; [L35] ieee_double_shape_type ew_u; [L36] ew_u.value = (x) [L37] EXPR ew_u.parts.msw [L37] (hx) = ew_u.parts.msw [L38] EXPR ew_u.parts.lsw [L38] (lx) = ew_u.parts.lsw [L40] hx &= 0x7fffffff [L41] hx |= (__uint32_t)(lx | (-lx)) >> 31 [L42] hx = 0x7ff00000 - hx [L43] return 1 - (int)((__uint32_t)(hx | (-hx)) >> 31); [L74] COND TRUE !isinf_double(res) [L3] __assert_fail("0", "double_req_bl_1012a.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 19 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.2s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 17 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 20 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=19occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 25 NumberOfCodeBlocks, 25 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 20 ConstructedInterpolants, 0 QuantifiedInterpolants, 200 SizeOfPredicates, 0 NumberOfNonLiveVariables, 37 ConjunctsInSsa, 1 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...