./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 54858612 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/float-newlib/double_req_bl_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_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/float-newlib/double_req_bl_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 0.2.0-5485861 [2020-10-25 21:52:48,902 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-25 21:52:48,904 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-25 21:52:48,955 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-25 21:52:48,956 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-25 21:52:48,957 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-25 21:52:48,959 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-25 21:52:48,961 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-25 21:52:48,963 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-25 21:52:48,964 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-25 21:52:48,965 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-25 21:52:48,967 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-25 21:52:48,967 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-25 21:52:48,968 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-25 21:52:48,970 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-25 21:52:48,971 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-25 21:52:48,972 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-25 21:52:48,973 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-25 21:52:48,975 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-25 21:52:48,978 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-25 21:52:48,980 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-25 21:52:48,985 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-25 21:52:48,986 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-25 21:52:48,987 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-25 21:52:48,990 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-25 21:52:48,991 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-25 21:52:48,991 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-25 21:52:48,992 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-25 21:52:48,993 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-25 21:52:48,995 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-25 21:52:48,995 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-25 21:52:48,996 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-25 21:52:48,997 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-25 21:52:48,998 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-25 21:52:49,000 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-25 21:52:49,000 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-25 21:52:49,001 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-25 21:52:49,001 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-25 21:52:49,002 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-25 21:52:49,003 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-25 21:52:49,004 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-25 21:52:49,005 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-25 21:52:49,033 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-25 21:52:49,033 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-25 21:52:49,035 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-25 21:52:49,035 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-25 21:52:49,035 INFO L138 SettingsManager]: * Use SBE=true [2020-10-25 21:52:49,036 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-25 21:52:49,036 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-25 21:52:49,036 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-25 21:52:49,036 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-25 21:52:49,037 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-25 21:52:49,037 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-25 21:52:49,037 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-25 21:52:49,037 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-25 21:52:49,038 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-25 21:52:49,038 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-25 21:52:49,038 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-25 21:52:49,038 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-25 21:52:49,039 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-25 21:52:49,039 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-25 21:52:49,039 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-25 21:52:49,039 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-25 21:52:49,040 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-25 21:52:49,040 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-25 21:52:49,040 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-25 21:52:49,041 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-25 21:52:49,041 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-25 21:52:49,041 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-25 21:52:49,041 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-25 21:52:49,042 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-25 21:52:49,042 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 375bec20b72ecdcbd44e4f617a51a92835ad48e7 [2020-10-25 21:52:49,560 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-25 21:52:49,590 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-25 21:52:49,594 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-25 21:52:49,595 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-25 21:52:49,597 INFO L275 PluginConnector]: CDTParser initialized [2020-10-25 21:52:49,598 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-newlib/double_req_bl_1012b.c [2020-10-25 21:52:49,703 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cefcd993d/ed5505a7bf7940e7a2a29f587a4c0cb5/FLAG2fc1ef690 [2020-10-25 21:52:50,371 INFO L306 CDTParser]: Found 1 translation units. [2020-10-25 21:52:50,372 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/double_req_bl_1012b.c [2020-10-25 21:52:50,380 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cefcd993d/ed5505a7bf7940e7a2a29f587a4c0cb5/FLAG2fc1ef690 [2020-10-25 21:52:50,724 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cefcd993d/ed5505a7bf7940e7a2a29f587a4c0cb5 [2020-10-25 21:52:50,728 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-25 21:52:50,736 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-25 21:52:50,738 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-25 21:52:50,739 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-25 21:52:50,746 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-25 21:52:50,747 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.10 09:52:50" (1/1) ... [2020-10-25 21:52:50,752 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@14f74f8c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:52:50, skipping insertion in model container [2020-10-25 21:52:50,752 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.10 09:52:50" (1/1) ... [2020-10-25 21:52:50,761 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-25 21:52:50,782 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-25 21:52:51,033 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-25 21:52:51,043 INFO L203 MainTranslator]: Completed pre-run [2020-10-25 21:52:51,075 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-25 21:52:51,094 INFO L208 MainTranslator]: Completed translation [2020-10-25 21:52:51,095 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:52:51 WrapperNode [2020-10-25 21:52:51,095 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-25 21:52:51,097 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-25 21:52:51,097 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-25 21:52:51,097 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-25 21:52:51,107 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:52:51" (1/1) ... [2020-10-25 21:52:51,119 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:52:51" (1/1) ... [2020-10-25 21:52:51,147 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-25 21:52:51,148 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-25 21:52:51,148 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-25 21:52:51,149 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-25 21:52:51,159 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:52:51" (1/1) ... [2020-10-25 21:52:51,160 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:52:51" (1/1) ... [2020-10-25 21:52:51,163 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:52:51" (1/1) ... [2020-10-25 21:52:51,164 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:52:51" (1/1) ... [2020-10-25 21:52:51,173 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:52:51" (1/1) ... [2020-10-25 21:52:51,178 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:52:51" (1/1) ... [2020-10-25 21:52:51,181 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:52:51" (1/1) ... [2020-10-25 21:52:51,184 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-25 21:52:51,185 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-25 21:52:51,186 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-25 21:52:51,186 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-25 21:52:51,187 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:52:51" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-25 21:52:51,284 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-25 21:52:51,285 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-25 21:52:51,285 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-10-25 21:52:51,286 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-25 21:52:51,286 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-10-25 21:52:51,286 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-25 21:52:51,286 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-25 21:52:51,287 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-25 21:52:51,287 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-25 21:52:51,859 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-25 21:52:51,860 INFO L298 CfgBuilder]: Removed 16 assume(true) statements. [2020-10-25 21:52:51,862 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 09:52:51 BoogieIcfgContainer [2020-10-25 21:52:51,863 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-25 21:52:51,866 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-25 21:52:51,867 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-25 21:52:51,870 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-25 21:52:51,871 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.10 09:52:50" (1/3) ... [2020-10-25 21:52:51,872 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44c6a913 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.10 09:52:51, skipping insertion in model container [2020-10-25 21:52:51,872 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:52:51" (2/3) ... [2020-10-25 21:52:51,873 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44c6a913 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.10 09:52:51, skipping insertion in model container [2020-10-25 21:52:51,873 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 09:52:51" (3/3) ... [2020-10-25 21:52:51,876 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1012b.c [2020-10-25 21:52:51,893 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-25 21:52:51,899 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-25 21:52:51,914 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-25 21:52:51,955 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-25 21:52:51,955 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-25 21:52:51,956 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-25 21:52:51,956 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-25 21:52:51,956 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-25 21:52:51,956 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-25 21:52:51,956 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-25 21:52:51,956 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-25 21:52:51,972 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states. [2020-10-25 21:52:51,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-25 21:52:51,979 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 21:52:51,980 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-25 21:52:51,980 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 21:52:51,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 21:52:51,987 INFO L82 PathProgramCache]: Analyzing trace with hash -969083750, now seen corresponding path program 1 times [2020-10-25 21:52:51,998 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 21:52:51,999 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [40634967] [2020-10-25 21:52:51,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 21:52:52,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 21:52:52,148 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-25 21:52:52,149 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [40634967] [2020-10-25 21:52:52,149 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-25 21:52:52,150 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-25 21:52:52,151 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2131113038] [2020-10-25 21:52:52,156 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-25 21:52:52,157 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-25 21:52:52,172 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-25 21:52:52,173 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-25 21:52:52,175 INFO L87 Difference]: Start difference. First operand 19 states. Second operand 2 states. [2020-10-25 21:52:52,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 21:52:52,195 INFO L93 Difference]: Finished difference Result 35 states and 47 transitions. [2020-10-25 21:52:52,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-25 21:52:52,197 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 11 [2020-10-25 21:52:52,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 21:52:52,206 INFO L225 Difference]: With dead ends: 35 [2020-10-25 21:52:52,207 INFO L226 Difference]: Without dead ends: 15 [2020-10-25 21:52:52,210 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-25 21:52:52,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2020-10-25 21:52:52,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2020-10-25 21:52:52,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2020-10-25 21:52:52,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 14 transitions. [2020-10-25 21:52:52,269 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 14 transitions. Word has length 11 [2020-10-25 21:52:52,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 21:52:52,270 INFO L481 AbstractCegarLoop]: Abstraction has 15 states and 14 transitions. [2020-10-25 21:52:52,270 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-25 21:52:52,270 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 14 transitions. [2020-10-25 21:52:52,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-25 21:52:52,271 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 21:52:52,272 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-25 21:52:52,272 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-25 21:52:52,272 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 21:52:52,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 21:52:52,274 INFO L82 PathProgramCache]: Analyzing trace with hash 657368916, now seen corresponding path program 1 times [2020-10-25 21:52:52,274 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 21:52:52,275 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1241970581] [2020-10-25 21:52:52,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 21:52:52,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-25 21:52:52,411 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-25 21:52:52,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-25 21:52:52,558 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-25 21:52:52,626 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-25 21:52:52,626 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-25 21:52:52,628 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-25 21:52:52,680 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.10 09:52:52 BoogieIcfgContainer [2020-10-25 21:52:52,680 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-25 21:52:52,681 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-25 21:52:52,682 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-25 21:52:52,682 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-25 21:52:52,683 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 09:52:51" (3/4) ... [2020-10-25 21:52:52,688 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-10-25 21:52:52,688 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-25 21:52:52,695 INFO L168 Benchmark]: Toolchain (without parser) took 1959.88 ms. Allocated memory was 50.3 MB in the beginning and 60.8 MB in the end (delta: 10.5 MB). Free memory was 27.3 MB in the beginning and 30.7 MB in the end (delta: -3.5 MB). Peak memory consumption was 9.9 MB. Max. memory is 16.1 GB. [2020-10-25 21:52:52,697 INFO L168 Benchmark]: CDTParser took 0.44 ms. Allocated memory is still 39.8 MB. Free memory was 17.9 MB in the beginning and 17.8 MB in the end (delta: 69.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-25 21:52:52,698 INFO L168 Benchmark]: CACSL2BoogieTranslator took 357.39 ms. Allocated memory is still 50.3 MB. Free memory was 26.7 MB in the beginning and 27.4 MB in the end (delta: -730.9 kB). Peak memory consumption was 5.5 MB. Max. memory is 16.1 GB. [2020-10-25 21:52:52,700 INFO L168 Benchmark]: Boogie Procedure Inliner took 50.42 ms. Allocated memory is still 50.3 MB. Free memory was 27.3 MB in the beginning and 25.6 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-25 21:52:52,701 INFO L168 Benchmark]: Boogie Preprocessor took 36.44 ms. Allocated memory is still 50.3 MB. Free memory was 25.6 MB in the beginning and 24.3 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-25 21:52:52,702 INFO L168 Benchmark]: RCFGBuilder took 677.74 ms. Allocated memory is still 50.3 MB. Free memory was 24.1 MB in the beginning and 33.1 MB in the end (delta: -9.0 MB). Peak memory consumption was 8.0 MB. Max. memory is 16.1 GB. [2020-10-25 21:52:52,704 INFO L168 Benchmark]: TraceAbstraction took 814.59 ms. Allocated memory was 50.3 MB in the beginning and 60.8 MB in the end (delta: 10.5 MB). Free memory was 32.6 MB in the beginning and 31.1 MB in the end (delta: 1.5 MB). Peak memory consumption was 13.1 MB. Max. memory is 16.1 GB. [2020-10-25 21:52:52,706 INFO L168 Benchmark]: Witness Printer took 7.21 ms. Allocated memory is still 60.8 MB. Free memory was 31.1 MB in the beginning and 30.7 MB in the end (delta: 330.8 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-25 21:52:52,726 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.44 ms. Allocated memory is still 39.8 MB. Free memory was 17.9 MB in the beginning and 17.8 MB in the end (delta: 69.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 357.39 ms. Allocated memory is still 50.3 MB. Free memory was 26.7 MB in the beginning and 27.4 MB in the end (delta: -730.9 kB). Peak memory consumption was 5.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 50.42 ms. Allocated memory is still 50.3 MB. Free memory was 27.3 MB in the beginning and 25.6 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 36.44 ms. Allocated memory is still 50.3 MB. Free memory was 25.6 MB in the beginning and 24.3 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 677.74 ms. Allocated memory is still 50.3 MB. Free memory was 24.1 MB in the beginning and 33.1 MB in the end (delta: -9.0 MB). Peak memory consumption was 8.0 MB. Max. memory is 16.1 GB. * TraceAbstraction took 814.59 ms. Allocated memory was 50.3 MB in the beginning and 60.8 MB in the end (delta: 10.5 MB). Free memory was 32.6 MB in the beginning and 31.1 MB in the end (delta: 1.5 MB). Peak memory consumption was 13.1 MB. Max. memory is 16.1 GB. * Witness Printer took 7.21 ms. Allocated memory is still 60.8 MB. Free memory was 31.1 MB in the beginning and 30.7 MB in the end (delta: 330.8 kB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 3]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of bitwiseOr at line 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: 0.6s, 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 0.2.0-5485861 [2020-10-25 21:52:55,492 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-25 21:52:55,496 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-25 21:52:55,569 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-25 21:52:55,570 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-25 21:52:55,576 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-25 21:52:55,580 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-25 21:52:55,586 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-25 21:52:55,594 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-25 21:52:55,598 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-25 21:52:55,600 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-25 21:52:55,601 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-25 21:52:55,602 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-25 21:52:55,609 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-25 21:52:55,611 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-25 21:52:55,612 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-25 21:52:55,614 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-25 21:52:55,618 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-25 21:52:55,622 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-25 21:52:55,626 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-25 21:52:55,628 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-25 21:52:55,632 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-25 21:52:55,634 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-25 21:52:55,636 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-25 21:52:55,643 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-25 21:52:55,643 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-25 21:52:55,644 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-25 21:52:55,646 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-25 21:52:55,647 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-25 21:52:55,648 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-25 21:52:55,649 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-25 21:52:55,650 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-25 21:52:55,652 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-25 21:52:55,653 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-25 21:52:55,654 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-25 21:52:55,655 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-25 21:52:55,655 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-25 21:52:55,656 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-25 21:52:55,656 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-25 21:52:55,658 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-25 21:52:55,659 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-25 21:52:55,660 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2020-10-25 21:52:55,721 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-25 21:52:55,721 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-25 21:52:55,726 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-25 21:52:55,726 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-25 21:52:55,726 INFO L138 SettingsManager]: * Use SBE=true [2020-10-25 21:52:55,727 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-25 21:52:55,727 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-25 21:52:55,727 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-25 21:52:55,727 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-25 21:52:55,728 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-25 21:52:55,729 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-25 21:52:55,729 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-25 21:52:55,730 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-10-25 21:52:55,730 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-10-25 21:52:55,730 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-25 21:52:55,730 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-25 21:52:55,730 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-25 21:52:55,731 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-25 21:52:55,731 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-25 21:52:55,731 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-25 21:52:55,731 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-25 21:52:55,732 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-25 21:52:55,732 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-25 21:52:55,732 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-25 21:52:55,732 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-25 21:52:55,733 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-25 21:52:55,733 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2020-10-25 21:52:55,733 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-10-25 21:52:55,733 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-25 21:52:55,733 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-25 21:52:55,734 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-25 21:52:55,734 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 375bec20b72ecdcbd44e4f617a51a92835ad48e7 [2020-10-25 21:52:56,171 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-25 21:52:56,205 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-25 21:52:56,210 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-25 21:52:56,212 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-25 21:52:56,214 INFO L275 PluginConnector]: CDTParser initialized [2020-10-25 21:52:56,215 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-newlib/double_req_bl_1012b.c [2020-10-25 21:52:56,299 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1de6e26c6/d76ed9dd868440e987c2fa905a279604/FLAGc54f2e619 [2020-10-25 21:52:56,974 INFO L306 CDTParser]: Found 1 translation units. [2020-10-25 21:52:56,975 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/double_req_bl_1012b.c [2020-10-25 21:52:56,989 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1de6e26c6/d76ed9dd868440e987c2fa905a279604/FLAGc54f2e619 [2020-10-25 21:52:57,302 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1de6e26c6/d76ed9dd868440e987c2fa905a279604 [2020-10-25 21:52:57,306 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-25 21:52:57,314 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-25 21:52:57,316 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-25 21:52:57,316 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-25 21:52:57,320 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-25 21:52:57,321 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.10 09:52:57" (1/1) ... [2020-10-25 21:52:57,325 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@58c1cdd7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:52:57, skipping insertion in model container [2020-10-25 21:52:57,326 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.10 09:52:57" (1/1) ... [2020-10-25 21:52:57,335 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-25 21:52:57,353 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-25 21:52:57,585 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-25 21:52:57,602 INFO L203 MainTranslator]: Completed pre-run [2020-10-25 21:52:57,638 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-25 21:52:57,662 INFO L208 MainTranslator]: Completed translation [2020-10-25 21:52:57,663 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:52:57 WrapperNode [2020-10-25 21:52:57,663 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-25 21:52:57,665 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-25 21:52:57,665 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-25 21:52:57,665 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-25 21:52:57,675 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:52:57" (1/1) ... [2020-10-25 21:52:57,688 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:52:57" (1/1) ... [2020-10-25 21:52:57,720 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-25 21:52:57,721 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-25 21:52:57,721 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-25 21:52:57,722 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-25 21:52:57,732 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:52:57" (1/1) ... [2020-10-25 21:52:57,732 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:52:57" (1/1) ... [2020-10-25 21:52:57,737 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:52:57" (1/1) ... [2020-10-25 21:52:57,737 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:52:57" (1/1) ... [2020-10-25 21:52:57,748 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:52:57" (1/1) ... [2020-10-25 21:52:57,753 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:52:57" (1/1) ... [2020-10-25 21:52:57,756 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:52:57" (1/1) ... [2020-10-25 21:52:57,760 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-25 21:52:57,761 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-25 21:52:57,761 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-25 21:52:57,762 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-25 21:52:57,763 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:52:57" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-25 21:52:57,854 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8 [2020-10-25 21:52:57,855 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2020-10-25 21:52:57,855 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-10-25 21:52:57,856 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-25 21:52:57,856 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2020-10-25 21:52:57,856 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-25 21:52:57,856 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-25 21:52:57,858 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2020-10-25 21:52:57,858 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-25 21:52:58,580 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-25 21:52:58,581 INFO L298 CfgBuilder]: Removed 16 assume(true) statements. [2020-10-25 21:52:58,583 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 09:52:58 BoogieIcfgContainer [2020-10-25 21:52:58,583 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-25 21:52:58,585 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-25 21:52:58,586 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-25 21:52:58,590 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-25 21:52:58,591 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.10 09:52:57" (1/3) ... [2020-10-25 21:52:58,592 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ea87023 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.10 09:52:58, skipping insertion in model container [2020-10-25 21:52:58,592 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:52:57" (2/3) ... [2020-10-25 21:52:58,594 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ea87023 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.10 09:52:58, skipping insertion in model container [2020-10-25 21:52:58,594 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 09:52:58" (3/3) ... [2020-10-25 21:52:58,596 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1012b.c [2020-10-25 21:52:58,608 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-25 21:52:58,614 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-25 21:52:58,629 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-25 21:52:58,675 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-25 21:52:58,676 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-25 21:52:58,676 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-25 21:52:58,676 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-25 21:52:58,676 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-25 21:52:58,676 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-25 21:52:58,676 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-25 21:52:58,677 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-25 21:52:58,693 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states. [2020-10-25 21:52:58,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-25 21:52:58,703 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 21:52:58,704 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-25 21:52:58,704 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 21:52:58,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 21:52:58,718 INFO L82 PathProgramCache]: Analyzing trace with hash -969083750, now seen corresponding path program 1 times [2020-10-25 21:52:58,734 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-25 21:52:58,735 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [530887159] [2020-10-25 21:52:58,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2020-10-25 21:52:58,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 21:52:58,876 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 1 conjunts are in the unsatisfiable core [2020-10-25 21:52:58,881 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-25 21:52:58,901 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-25 21:52:58,901 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-25 21:52:58,906 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-25 21:52:58,907 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [530887159] [2020-10-25 21:52:58,908 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-25 21:52:58,908 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-10-25 21:52:58,910 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1261805572] [2020-10-25 21:52:58,915 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-25 21:52:58,915 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-25 21:52:58,929 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-25 21:52:58,930 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-25 21:52:58,933 INFO L87 Difference]: Start difference. First operand 19 states. Second operand 2 states. [2020-10-25 21:52:58,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 21:52:58,951 INFO L93 Difference]: Finished difference Result 35 states and 47 transitions. [2020-10-25 21:52:58,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-25 21:52:58,953 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 11 [2020-10-25 21:52:58,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 21:52:58,963 INFO L225 Difference]: With dead ends: 35 [2020-10-25 21:52:58,963 INFO L226 Difference]: Without dead ends: 15 [2020-10-25 21:52:58,966 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 [2020-10-25 21:52:58,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2020-10-25 21:52:58,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2020-10-25 21:52:59,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2020-10-25 21:52:59,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 14 transitions. [2020-10-25 21:52:59,007 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 14 transitions. Word has length 11 [2020-10-25 21:52:59,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 21:52:59,008 INFO L481 AbstractCegarLoop]: Abstraction has 15 states and 14 transitions. [2020-10-25 21:52:59,008 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-25 21:52:59,008 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 14 transitions. [2020-10-25 21:52:59,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-25 21:52:59,009 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 21:52:59,009 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-25 21:52:59,222 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-10-25 21:52:59,223 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 21:52:59,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 21:52:59,225 INFO L82 PathProgramCache]: Analyzing trace with hash 657368916, now seen corresponding path program 1 times [2020-10-25 21:52:59,227 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-25 21:52:59,228 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1346523414] [2020-10-25 21:52:59,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2020-10-25 21:52:59,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-25 21:52:59,503 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-25 21:52:59,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-25 21:52:59,683 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-25 21:52:59,783 INFO L173 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2020-10-25 21:52:59,784 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-25 21:52:59,991 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-10-25 21:53:00,026 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.10 09:53:00 BoogieIcfgContainer [2020-10-25 21:53:00,027 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-25 21:53:00,028 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-25 21:53:00,029 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-25 21:53:00,029 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-25 21:53:00,030 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 09:52:58" (3/4) ... [2020-10-25 21:53:00,032 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-10-25 21:53:00,091 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-25 21:53:00,091 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-25 21:53:00,094 INFO L168 Benchmark]: Toolchain (without parser) took 2784.51 ms. Allocated memory was 39.8 MB in the beginning and 58.7 MB in the end (delta: 18.9 MB). Free memory was 16.8 MB in the beginning and 34.6 MB in the end (delta: -17.8 MB). Peak memory consumption was 4.3 MB. Max. memory is 16.1 GB. [2020-10-25 21:53:00,095 INFO L168 Benchmark]: CDTParser took 0.36 ms. Allocated memory is still 39.8 MB. Free memory was 24.4 MB in the beginning and 24.3 MB in the end (delta: 69.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-25 21:53:00,096 INFO L168 Benchmark]: CACSL2BoogieTranslator took 348.29 ms. Allocated memory is still 39.8 MB. Free memory was 16.2 MB in the beginning and 16.5 MB in the end (delta: -297.8 kB). Peak memory consumption was 5.4 MB. Max. memory is 16.1 GB. [2020-10-25 21:53:00,097 INFO L168 Benchmark]: Boogie Procedure Inliner took 55.49 ms. Allocated memory was 39.8 MB in the beginning and 48.2 MB in the end (delta: 8.4 MB). Free memory was 16.5 MB in the beginning and 32.8 MB in the end (delta: -16.3 MB). Peak memory consumption was 5.0 MB. Max. memory is 16.1 GB. [2020-10-25 21:53:00,097 INFO L168 Benchmark]: Boogie Preprocessor took 39.07 ms. Allocated memory is still 48.2 MB. Free memory was 32.8 MB in the beginning and 31.2 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-25 21:53:00,098 INFO L168 Benchmark]: RCFGBuilder took 822.10 ms. Allocated memory is still 48.2 MB. Free memory was 31.2 MB in the beginning and 26.1 MB in the end (delta: 5.1 MB). Peak memory consumption was 13.5 MB. Max. memory is 16.1 GB. [2020-10-25 21:53:00,099 INFO L168 Benchmark]: TraceAbstraction took 1441.51 ms. Allocated memory was 48.2 MB in the beginning and 58.7 MB in the end (delta: 10.5 MB). Free memory was 25.7 MB in the beginning and 37.2 MB in the end (delta: -11.4 MB). Peak memory consumption was 7.5 MB. Max. memory is 16.1 GB. [2020-10-25 21:53:00,100 INFO L168 Benchmark]: Witness Printer took 63.78 ms. Allocated memory is still 58.7 MB. Free memory was 37.1 MB in the beginning and 34.6 MB in the end (delta: 2.4 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-10-25 21:53:00,105 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.36 ms. Allocated memory is still 39.8 MB. Free memory was 24.4 MB in the beginning and 24.3 MB in the end (delta: 69.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 348.29 ms. Allocated memory is still 39.8 MB. Free memory was 16.2 MB in the beginning and 16.5 MB in the end (delta: -297.8 kB). Peak memory consumption was 5.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 55.49 ms. Allocated memory was 39.8 MB in the beginning and 48.2 MB in the end (delta: 8.4 MB). Free memory was 16.5 MB in the beginning and 32.8 MB in the end (delta: -16.3 MB). Peak memory consumption was 5.0 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 39.07 ms. Allocated memory is still 48.2 MB. Free memory was 32.8 MB in the beginning and 31.2 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 822.10 ms. Allocated memory is still 48.2 MB. Free memory was 31.2 MB in the beginning and 26.1 MB in the end (delta: 5.1 MB). Peak memory consumption was 13.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1441.51 ms. Allocated memory was 48.2 MB in the beginning and 58.7 MB in the end (delta: 10.5 MB). Free memory was 25.7 MB in the beginning and 37.2 MB in the end (delta: -11.4 MB). Peak memory consumption was 7.5 MB. Max. memory is 16.1 GB. * Witness Printer took 63.78 ms. Allocated memory is still 58.7 MB. Free memory was 37.1 MB in the beginning and 34.6 MB in the end (delta: 2.4 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 3]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [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: 1.3s, 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...