./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/float-newlib/double_req_bl_1012b.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_1012b.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 375bec20b72ecdcbd44e4f617a51a92835ad48e7 .............................................................................................................................................................................................................................................................................................. 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_1012b.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 375bec20b72ecdcbd44e4f617a51a92835ad48e7 .......................................................................................................................................................................................................................................................................................................... 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 00:32:23,008 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-20 00:32:23,010 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-20 00:32:23,033 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-20 00:32:23,034 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-20 00:32:23,035 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-20 00:32:23,036 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-20 00:32:23,038 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-20 00:32:23,040 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-20 00:32:23,041 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-20 00:32:23,041 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-20 00:32:23,043 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-20 00:32:23,043 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-20 00:32:23,044 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-20 00:32:23,045 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-20 00:32:23,046 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-20 00:32:23,047 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-20 00:32:23,048 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-20 00:32:23,049 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-20 00:32:23,051 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-20 00:32:23,059 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-20 00:32:23,060 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-20 00:32:23,062 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-20 00:32:23,062 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-20 00:32:23,065 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-20 00:32:23,065 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-20 00:32:23,065 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-20 00:32:23,066 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-20 00:32:23,067 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-20 00:32:23,068 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-20 00:32:23,068 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-20 00:32:23,069 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-20 00:32:23,069 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-20 00:32:23,070 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-20 00:32:23,071 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-20 00:32:23,071 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-20 00:32:23,072 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-20 00:32:23,072 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-20 00:32:23,072 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-20 00:32:23,073 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-20 00:32:23,074 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-20 00:32:23,075 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-20 00:32:23,106 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-20 00:32:23,107 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-20 00:32:23,108 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-20 00:32:23,108 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-20 00:32:23,108 INFO L138 SettingsManager]: * Use SBE=true [2020-10-20 00:32:23,109 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-20 00:32:23,109 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-20 00:32:23,109 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-20 00:32:23,109 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-20 00:32:23,110 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-20 00:32:23,110 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-20 00:32:23,110 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-20 00:32:23,110 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-20 00:32:23,111 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-20 00:32:23,111 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-20 00:32:23,111 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-20 00:32:23,111 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-20 00:32:23,112 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-20 00:32:23,112 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-20 00:32:23,112 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-20 00:32:23,112 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-20 00:32:23,113 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-20 00:32:23,113 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-20 00:32:23,113 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-20 00:32:23,114 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-20 00:32:23,114 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-20 00:32:23,114 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-20 00:32:23,114 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-20 00:32:23,115 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-20 00:32:23,115 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 -> 375bec20b72ecdcbd44e4f617a51a92835ad48e7 [2020-10-20 00:32:23,307 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-20 00:32:23,319 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-20 00:32:23,322 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-20 00:32:23,324 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-20 00:32:23,324 INFO L275 PluginConnector]: CDTParser initialized [2020-10-20 00:32:23,325 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-newlib/double_req_bl_1012b.c [2020-10-20 00:32:23,387 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b251fd23e/5acfebabff0a4572951dc63bdff2fd80/FLAGa108e1faa [2020-10-20 00:32:23,794 INFO L306 CDTParser]: Found 1 translation units. [2020-10-20 00:32:23,795 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/double_req_bl_1012b.c [2020-10-20 00:32:23,802 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b251fd23e/5acfebabff0a4572951dc63bdff2fd80/FLAGa108e1faa [2020-10-20 00:32:24,222 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b251fd23e/5acfebabff0a4572951dc63bdff2fd80 [2020-10-20 00:32:24,227 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-20 00:32:24,233 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-20 00:32:24,235 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-20 00:32:24,235 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-20 00:32:24,238 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-20 00:32:24,239 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 12:32:24" (1/1) ... [2020-10-20 00:32:24,242 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7941c494 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 00:32:24,242 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 12:32:24" (1/1) ... [2020-10-20 00:32:24,250 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-20 00:32:24,275 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-20 00:32:24,521 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 00:32:24,531 INFO L203 MainTranslator]: Completed pre-run [2020-10-20 00:32:24,564 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 00:32:24,580 INFO L208 MainTranslator]: Completed translation [2020-10-20 00:32:24,580 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:32:24 WrapperNode [2020-10-20 00:32:24,580 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-20 00:32:24,581 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-20 00:32:24,581 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-20 00:32:24,581 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-20 00:32:24,588 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 00:32:24,598 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 00:32:24,622 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-20 00:32:24,623 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-20 00:32:24,623 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-20 00:32:24,623 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-20 00:32:24,633 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 00:32:24,633 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 00:32:24,636 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 00:32:24,636 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 00:32:24,645 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 00:32:24,650 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 00:32:24,652 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 00:32:24,655 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-20 00:32:24,655 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-20 00:32:24,655 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-20 00:32:24,656 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-20 00:32:24,657 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 00:32:24,711 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-20 00:32:24,712 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-20 00:32:24,712 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-10-20 00:32:24,712 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-20 00:32:24,712 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-10-20 00:32:24,712 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-20 00:32:24,713 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-20 00:32:24,713 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-20 00:32:24,713 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-20 00:32:24,998 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-20 00:32:24,998 INFO L298 CfgBuilder]: Removed 16 assume(true) statements. [2020-10-20 00:32:25,000 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 12:32:25 BoogieIcfgContainer [2020-10-20 00:32:25,000 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-20 00:32:25,002 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-20 00:32:25,002 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-20 00:32:25,005 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-20 00:32:25,006 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.10 12:32:24" (1/3) ... [2020-10-20 00:32:25,015 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@324377ca 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 00:32:25,015 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 00:32:25,016 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@324377ca 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 00:32:25,016 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 00:32:25,018 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1012b.c [2020-10-20 00:32:25,030 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-20 00:32:25,040 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-20 00:32:25,058 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-20 00:32:25,090 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-20 00:32:25,090 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-20 00:32:25,091 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-20 00:32:25,091 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-20 00:32:25,091 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-20 00:32:25,092 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-20 00:32:25,092 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-20 00:32:25,092 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-20 00:32:25,112 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states. [2020-10-20 00:32:25,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-20 00:32:25,119 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 00:32:25,120 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 00:32:25,121 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 00:32:25,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 00:32:25,127 INFO L82 PathProgramCache]: Analyzing trace with hash -969083750, now seen corresponding path program 1 times [2020-10-20 00:32:25,138 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 00:32:25,139 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1865051524] [2020-10-20 00:32:25,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 00:32:25,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 00:32:25,286 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 00:32:25,287 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1865051524] [2020-10-20 00:32:25,288 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 00:32:25,288 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-20 00:32:25,289 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1056630333] [2020-10-20 00:32:25,294 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-20 00:32:25,294 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 00:32:25,307 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-20 00:32:25,309 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-20 00:32:25,311 INFO L87 Difference]: Start difference. First operand 19 states. Second operand 2 states. [2020-10-20 00:32:25,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 00:32:25,331 INFO L93 Difference]: Finished difference Result 35 states and 47 transitions. [2020-10-20 00:32:25,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-20 00:32:25,333 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 11 [2020-10-20 00:32:25,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 00:32:25,360 INFO L225 Difference]: With dead ends: 35 [2020-10-20 00:32:25,360 INFO L226 Difference]: Without dead ends: 15 [2020-10-20 00:32:25,364 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 00:32:25,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2020-10-20 00:32:25,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2020-10-20 00:32:25,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2020-10-20 00:32:25,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 14 transitions. [2020-10-20 00:32:25,404 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 14 transitions. Word has length 11 [2020-10-20 00:32:25,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 00:32:25,405 INFO L481 AbstractCegarLoop]: Abstraction has 15 states and 14 transitions. [2020-10-20 00:32:25,405 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-20 00:32:25,406 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 14 transitions. [2020-10-20 00:32:25,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-20 00:32:25,407 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 00:32:25,407 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 00:32:25,408 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-20 00:32:25,408 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 00:32:25,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 00:32:25,409 INFO L82 PathProgramCache]: Analyzing trace with hash 657368916, now seen corresponding path program 1 times [2020-10-20 00:32:25,409 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 00:32:25,410 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1163036569] [2020-10-20 00:32:25,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 00:32:25,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 00:32:25,525 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 00:32:25,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 00:32:25,646 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 00:32:25,680 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 00:32:25,681 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-20 00:32:25,682 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-20 00:32:25,714 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.10 12:32:25 BoogieIcfgContainer [2020-10-20 00:32:25,715 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-20 00:32:25,715 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-20 00:32:25,716 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-20 00:32:25,716 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-20 00:32:25,717 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 00:32:25,720 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-10-20 00:32:25,721 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-20 00:32:25,724 INFO L168 Benchmark]: Toolchain (without parser) took 1494.29 ms. Allocated memory was 34.6 MB in the beginning and 46.1 MB in the end (delta: 11.5 MB). Free memory was 13.1 MB in the beginning and 9.6 MB in the end (delta: 3.5 MB). Peak memory consumption was 15.1 MB. Max. memory is 14.3 GB. [2020-10-20 00:32:25,725 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 33.0 MB. Free memory was 8.9 MB in the beginning and 8.9 MB in the end (delta: 40.2 kB). Peak memory consumption was 40.2 kB. Max. memory is 14.3 GB. [2020-10-20 00:32:25,726 INFO L168 Benchmark]: CACSL2BoogieTranslator took 345.94 ms. Allocated memory was 34.6 MB in the beginning and 43.5 MB in the end (delta: 8.9 MB). Free memory was 12.2 MB in the beginning and 23.4 MB in the end (delta: -11.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 14.3 GB. [2020-10-20 00:32:25,727 INFO L168 Benchmark]: Boogie Procedure Inliner took 41.63 ms. Allocated memory is still 43.5 MB. Free memory was 23.4 MB in the beginning and 21.4 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 14.3 GB. [2020-10-20 00:32:25,728 INFO L168 Benchmark]: Boogie Preprocessor took 32.14 ms. Allocated memory is still 43.5 MB. Free memory was 21.3 MB in the beginning and 19.7 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.6 MB. Max. memory is 14.3 GB. [2020-10-20 00:32:25,729 INFO L168 Benchmark]: RCFGBuilder took 345.11 ms. Allocated memory was 43.5 MB in the beginning and 45.1 MB in the end (delta: 1.6 MB). Free memory was 19.7 MB in the beginning and 12.5 MB in the end (delta: 7.3 MB). Peak memory consumption was 8.9 MB. Max. memory is 14.3 GB. [2020-10-20 00:32:25,730 INFO L168 Benchmark]: TraceAbstraction took 713.29 ms. Allocated memory was 45.1 MB in the beginning and 46.1 MB in the end (delta: 1.0 MB). Free memory was 11.8 MB in the beginning and 10.1 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 14.3 GB. [2020-10-20 00:32:25,731 INFO L168 Benchmark]: Witness Printer took 5.58 ms. Allocated memory is still 46.1 MB. Free memory was 9.8 MB in the beginning and 9.6 MB in the end (delta: 285.1 kB). Peak memory consumption was 285.1 kB. Max. memory is 14.3 GB. [2020-10-20 00:32:25,740 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 33.0 MB. Free memory was 8.9 MB in the beginning and 8.9 MB in the end (delta: 40.2 kB). Peak memory consumption was 40.2 kB. Max. memory is 14.3 GB. * CACSL2BoogieTranslator took 345.94 ms. Allocated memory was 34.6 MB in the beginning and 43.5 MB in the end (delta: 8.9 MB). Free memory was 12.2 MB in the beginning and 23.4 MB in the end (delta: -11.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 14.3 GB. * Boogie Procedure Inliner took 41.63 ms. Allocated memory is still 43.5 MB. Free memory was 23.4 MB in the beginning and 21.4 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 14.3 GB. * Boogie Preprocessor took 32.14 ms. Allocated memory is still 43.5 MB. Free memory was 21.3 MB in the beginning and 19.7 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.6 MB. Max. memory is 14.3 GB. * RCFGBuilder took 345.11 ms. Allocated memory was 43.5 MB in the beginning and 45.1 MB in the end (delta: 1.6 MB). Free memory was 19.7 MB in the beginning and 12.5 MB in the end (delta: 7.3 MB). Peak memory consumption was 8.9 MB. Max. memory is 14.3 GB. * TraceAbstraction took 713.29 ms. Allocated memory was 45.1 MB in the beginning and 46.1 MB in the end (delta: 1.0 MB). Free memory was 11.8 MB in the beginning and 10.1 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 14.3 GB. * Witness Printer took 5.58 ms. Allocated memory is still 46.1 MB. Free memory was 9.8 MB in the beginning and 9.6 MB in the end (delta: 285.1 kB). Peak memory consumption was 285.1 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_1012b.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: 0.5s, 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 00:32:27,711 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-20 00:32:27,713 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-20 00:32:27,736 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-20 00:32:27,736 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-20 00:32:27,737 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-20 00:32:27,739 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-20 00:32:27,740 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-20 00:32:27,742 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-20 00:32:27,743 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-20 00:32:27,744 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-20 00:32:27,745 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-20 00:32:27,745 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-20 00:32:27,746 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-20 00:32:27,748 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-20 00:32:27,757 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-20 00:32:27,758 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-20 00:32:27,759 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-20 00:32:27,760 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-20 00:32:27,762 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-20 00:32:27,764 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-20 00:32:27,765 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-20 00:32:27,766 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-20 00:32:27,767 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-20 00:32:27,769 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-20 00:32:27,770 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-20 00:32:27,770 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-20 00:32:27,771 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-20 00:32:27,771 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-20 00:32:27,772 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-20 00:32:27,772 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-20 00:32:27,773 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-20 00:32:27,774 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-20 00:32:27,775 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-20 00:32:27,776 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-20 00:32:27,776 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-20 00:32:27,777 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-20 00:32:27,777 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-20 00:32:27,777 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-20 00:32:27,778 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-20 00:32:27,779 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-20 00:32:27,780 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2020-10-20 00:32:27,802 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-20 00:32:27,802 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-20 00:32:27,803 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-20 00:32:27,804 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-20 00:32:27,804 INFO L138 SettingsManager]: * Use SBE=true [2020-10-20 00:32:27,804 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-20 00:32:27,805 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-20 00:32:27,805 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-20 00:32:27,805 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-20 00:32:27,805 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-20 00:32:27,805 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-20 00:32:27,806 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-20 00:32:27,806 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-10-20 00:32:27,806 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-10-20 00:32:27,806 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-20 00:32:27,807 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-20 00:32:27,807 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-20 00:32:27,807 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-20 00:32:27,807 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-20 00:32:27,808 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-20 00:32:27,808 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-20 00:32:27,808 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-20 00:32:27,808 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-20 00:32:27,809 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-20 00:32:27,809 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-20 00:32:27,809 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-20 00:32:27,810 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2020-10-20 00:32:27,810 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-10-20 00:32:27,810 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-20 00:32:27,810 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-20 00:32:27,811 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-20 00:32:27,811 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 -> 375bec20b72ecdcbd44e4f617a51a92835ad48e7 [2020-10-20 00:32:28,007 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-20 00:32:28,019 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-20 00:32:28,023 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-20 00:32:28,033 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-20 00:32:28,034 INFO L275 PluginConnector]: CDTParser initialized [2020-10-20 00:32:28,035 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-newlib/double_req_bl_1012b.c [2020-10-20 00:32:28,105 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b5449ab3a/a6076257fa4e43f38a485caa0d6346c7/FLAGabeec2621 [2020-10-20 00:32:28,586 INFO L306 CDTParser]: Found 1 translation units. [2020-10-20 00:32:28,587 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/double_req_bl_1012b.c [2020-10-20 00:32:28,592 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b5449ab3a/a6076257fa4e43f38a485caa0d6346c7/FLAGabeec2621 [2020-10-20 00:32:28,975 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b5449ab3a/a6076257fa4e43f38a485caa0d6346c7 [2020-10-20 00:32:28,978 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-20 00:32:28,988 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-20 00:32:28,991 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-20 00:32:28,993 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-20 00:32:28,997 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-20 00:32:29,000 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 12:32:28" (1/1) ... [2020-10-20 00:32:29,003 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@fd66ff 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 00:32:29,004 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 12:32:28" (1/1) ... [2020-10-20 00:32:29,013 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-20 00:32:29,038 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-20 00:32:29,316 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 00:32:29,333 INFO L203 MainTranslator]: Completed pre-run [2020-10-20 00:32:29,387 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 00:32:29,418 INFO L208 MainTranslator]: Completed translation [2020-10-20 00:32:29,419 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:32:29 WrapperNode [2020-10-20 00:32:29,420 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-20 00:32:29,421 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-20 00:32:29,421 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-20 00:32:29,422 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-20 00:32:29,431 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 00:32:29,458 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 00:32:29,483 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-20 00:32:29,484 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-20 00:32:29,484 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-20 00:32:29,484 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-20 00:32:29,494 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 00:32:29,494 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 00:32:29,498 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 00:32:29,499 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 00:32:29,509 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 00:32:29,514 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 00:32:29,517 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 00:32:29,520 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-20 00:32:29,521 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-20 00:32:29,521 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-20 00:32:29,521 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-20 00:32:29,522 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 00:32:29,590 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8 [2020-10-20 00:32:29,590 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2020-10-20 00:32:29,591 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-10-20 00:32:29,591 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-20 00:32:29,591 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2020-10-20 00:32:29,591 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-20 00:32:29,591 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-20 00:32:29,592 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2020-10-20 00:32:29,592 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-20 00:32:29,944 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-20 00:32:29,944 INFO L298 CfgBuilder]: Removed 16 assume(true) statements. [2020-10-20 00:32:29,946 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 12:32:29 BoogieIcfgContainer [2020-10-20 00:32:29,947 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-20 00:32:29,948 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-20 00:32:29,948 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-20 00:32:29,952 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-20 00:32:29,952 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.10 12:32:28" (1/3) ... [2020-10-20 00:32:29,953 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45b54d68 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 12:32:29, skipping insertion in model container [2020-10-20 00:32:29,954 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 00:32:29,954 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45b54d68 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 12:32:29, skipping insertion in model container [2020-10-20 00:32:29,954 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 12:32:29" (3/3) ... [2020-10-20 00:32:29,956 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1012b.c [2020-10-20 00:32:29,969 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-20 00:32:29,976 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-20 00:32:29,991 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-20 00:32:30,017 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-20 00:32:30,018 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-20 00:32:30,018 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-20 00:32:30,018 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-20 00:32:30,018 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-20 00:32:30,018 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-20 00:32:30,019 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-20 00:32:30,019 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-20 00:32:30,033 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states. [2020-10-20 00:32:30,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-20 00:32:30,039 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 00:32:30,040 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 00:32:30,041 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 00:32:30,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 00:32:30,047 INFO L82 PathProgramCache]: Analyzing trace with hash -969083750, now seen corresponding path program 1 times [2020-10-20 00:32:30,061 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-20 00:32:30,062 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1424105184] [2020-10-20 00:32:30,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 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 00:32:30,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 00:32:30,209 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 1 conjunts are in the unsatisfiable core [2020-10-20 00:32:30,214 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 00:32:30,239 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 00:32:30,239 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-20 00:32:30,244 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 00:32:30,245 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1424105184] [2020-10-20 00:32:30,246 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-20 00:32:30,246 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-10-20 00:32:30,247 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1764970289] [2020-10-20 00:32:30,251 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-20 00:32:30,251 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-20 00:32:30,262 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-20 00:32:30,263 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-20 00:32:30,265 INFO L87 Difference]: Start difference. First operand 19 states. Second operand 2 states. [2020-10-20 00:32:30,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 00:32:30,283 INFO L93 Difference]: Finished difference Result 35 states and 47 transitions. [2020-10-20 00:32:30,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-20 00:32:30,285 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 11 [2020-10-20 00:32:30,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 00:32:30,295 INFO L225 Difference]: With dead ends: 35 [2020-10-20 00:32:30,295 INFO L226 Difference]: Without dead ends: 15 [2020-10-20 00:32:30,299 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 00:32:30,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2020-10-20 00:32:30,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2020-10-20 00:32:30,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2020-10-20 00:32:30,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 14 transitions. [2020-10-20 00:32:30,333 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 14 transitions. Word has length 11 [2020-10-20 00:32:30,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 00:32:30,334 INFO L481 AbstractCegarLoop]: Abstraction has 15 states and 14 transitions. [2020-10-20 00:32:30,334 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-20 00:32:30,334 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 14 transitions. [2020-10-20 00:32:30,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-20 00:32:30,335 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 00:32:30,335 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 00:32:30,548 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-10-20 00:32:30,549 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 00:32:30,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 00:32:30,550 INFO L82 PathProgramCache]: Analyzing trace with hash 657368916, now seen corresponding path program 1 times [2020-10-20 00:32:30,552 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-20 00:32:30,553 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [9771051] [2020-10-20 00:32:30,553 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 00:32:30,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 00:32:30,802 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 00:32:30,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 00:32:30,956 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 00:32:31,008 INFO L173 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2020-10-20 00:32:31,008 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-20 00:32:31,210 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-10-20 00:32:31,245 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.10 12:32:31 BoogieIcfgContainer [2020-10-20 00:32:31,246 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-20 00:32:31,246 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-20 00:32:31,246 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-20 00:32:31,247 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-20 00:32:31,247 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 12:32:29" (3/4) ... [2020-10-20 00:32:31,250 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-10-20 00:32:31,300 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-20 00:32:31,301 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-20 00:32:31,303 INFO L168 Benchmark]: Toolchain (without parser) took 2322.59 ms. Allocated memory was 38.3 MB in the beginning and 43.0 MB in the end (delta: 4.7 MB). Free memory was 15.7 MB in the beginning and 13.9 MB in the end (delta: 1.9 MB). Peak memory consumption was 6.6 MB. Max. memory is 14.3 GB. [2020-10-20 00:32:31,304 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 29.9 MB. Free memory was 16.0 MB in the beginning and 16.0 MB in the end (delta: 31.2 kB). Peak memory consumption was 31.2 kB. Max. memory is 14.3 GB. [2020-10-20 00:32:31,305 INFO L168 Benchmark]: CACSL2BoogieTranslator took 429.37 ms. Allocated memory was 38.3 MB in the beginning and 39.3 MB in the end (delta: 1.0 MB). Free memory was 14.7 MB in the beginning and 14.4 MB in the end (delta: 324.8 kB). Peak memory consumption was 6.5 MB. Max. memory is 14.3 GB. [2020-10-20 00:32:31,305 INFO L168 Benchmark]: Boogie Procedure Inliner took 62.91 ms. Allocated memory is still 39.3 MB. Free memory was 14.4 MB in the beginning and 12.4 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 14.3 GB. [2020-10-20 00:32:31,306 INFO L168 Benchmark]: Boogie Preprocessor took 36.74 ms. Allocated memory is still 39.3 MB. Free memory was 12.4 MB in the beginning and 10.7 MB in the end (delta: 1.8 MB). Peak memory consumption was 1.8 MB. Max. memory is 14.3 GB. [2020-10-20 00:32:31,307 INFO L168 Benchmark]: RCFGBuilder took 426.07 ms. Allocated memory was 39.3 MB in the beginning and 40.9 MB in the end (delta: 1.6 MB). Free memory was 10.5 MB in the beginning and 22.8 MB in the end (delta: -12.3 MB). Peak memory consumption was 3.1 MB. Max. memory is 14.3 GB. [2020-10-20 00:32:31,308 INFO L168 Benchmark]: TraceAbstraction took 1297.86 ms. Allocated memory was 40.9 MB in the beginning and 43.0 MB in the end (delta: 2.1 MB). Free memory was 22.3 MB in the beginning and 16.7 MB in the end (delta: 5.6 MB). Peak memory consumption was 7.7 MB. Max. memory is 14.3 GB. [2020-10-20 00:32:31,308 INFO L168 Benchmark]: Witness Printer took 54.70 ms. Allocated memory is still 43.0 MB. Free memory was 16.4 MB in the beginning and 13.9 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.3 GB. [2020-10-20 00:32:31,313 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 29.9 MB. Free memory was 16.0 MB in the beginning and 16.0 MB in the end (delta: 31.2 kB). Peak memory consumption was 31.2 kB. Max. memory is 14.3 GB. * CACSL2BoogieTranslator took 429.37 ms. Allocated memory was 38.3 MB in the beginning and 39.3 MB in the end (delta: 1.0 MB). Free memory was 14.7 MB in the beginning and 14.4 MB in the end (delta: 324.8 kB). Peak memory consumption was 6.5 MB. Max. memory is 14.3 GB. * Boogie Procedure Inliner took 62.91 ms. Allocated memory is still 39.3 MB. Free memory was 14.4 MB in the beginning and 12.4 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 14.3 GB. * Boogie Preprocessor took 36.74 ms. Allocated memory is still 39.3 MB. Free memory was 12.4 MB in the beginning and 10.7 MB in the end (delta: 1.8 MB). Peak memory consumption was 1.8 MB. Max. memory is 14.3 GB. * RCFGBuilder took 426.07 ms. Allocated memory was 39.3 MB in the beginning and 40.9 MB in the end (delta: 1.6 MB). Free memory was 10.5 MB in the beginning and 22.8 MB in the end (delta: -12.3 MB). Peak memory consumption was 3.1 MB. Max. memory is 14.3 GB. * TraceAbstraction took 1297.86 ms. Allocated memory was 40.9 MB in the beginning and 43.0 MB in the end (delta: 2.1 MB). Free memory was 22.3 MB in the beginning and 16.7 MB in the end (delta: 5.6 MB). Peak memory consumption was 7.7 MB. Max. memory is 14.3 GB. * Witness Printer took 54.70 ms. Allocated memory is still 43.0 MB. Free memory was 16.4 MB in the beginning and 13.9 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 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_1012b.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: 1.1s, 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...