./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/float-newlib/double_req_bl_1131a.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/float-newlib/double_req_bl_1131a.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 4554d2f8799ffeb9d5e04122bbb0f9e816b3f3f5 ...................................................................................................................................................................................................................................................................................................................... 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_1131a.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 4554d2f8799ffeb9d5e04122bbb0f9e816b3f3f5 .................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-10-24 23:16:49,013 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-24 23:16:49,016 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-24 23:16:49,050 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-24 23:16:49,051 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-24 23:16:49,052 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-24 23:16:49,054 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-24 23:16:49,057 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-24 23:16:49,059 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-24 23:16:49,061 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-24 23:16:49,062 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-24 23:16:49,064 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-24 23:16:49,065 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-24 23:16:49,066 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-24 23:16:49,067 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-24 23:16:49,069 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-24 23:16:49,070 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-24 23:16:49,071 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-24 23:16:49,073 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-24 23:16:49,076 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-24 23:16:49,078 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-24 23:16:49,079 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-24 23:16:49,081 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-24 23:16:49,082 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-24 23:16:49,085 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-24 23:16:49,085 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-24 23:16:49,086 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-24 23:16:49,087 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-24 23:16:49,088 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-24 23:16:49,089 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-24 23:16:49,089 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-24 23:16:49,090 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-24 23:16:49,091 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-24 23:16:49,092 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-24 23:16:49,094 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-24 23:16:49,095 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-24 23:16:49,096 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-24 23:16:49,096 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-24 23:16:49,096 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-24 23:16:49,098 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-24 23:16:49,099 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-24 23:16:49,100 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-24 23:16:49,130 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-24 23:16:49,131 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-24 23:16:49,133 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-24 23:16:49,133 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-24 23:16:49,134 INFO L138 SettingsManager]: * Use SBE=true [2020-10-24 23:16:49,134 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-24 23:16:49,134 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-24 23:16:49,135 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-24 23:16:49,135 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-24 23:16:49,135 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-24 23:16:49,136 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-24 23:16:49,136 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-24 23:16:49,136 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-24 23:16:49,137 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-24 23:16:49,137 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-24 23:16:49,137 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-24 23:16:49,137 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-24 23:16:49,138 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-24 23:16:49,138 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-24 23:16:49,138 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-24 23:16:49,139 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-24 23:16:49,139 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-24 23:16:49,139 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-24 23:16:49,139 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-24 23:16:49,140 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-24 23:16:49,140 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-24 23:16:49,140 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-24 23:16:49,140 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-24 23:16:49,141 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-24 23:16:49,141 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4554d2f8799ffeb9d5e04122bbb0f9e816b3f3f5 [2020-10-24 23:16:49,528 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-24 23:16:49,570 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-24 23:16:49,574 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-24 23:16:49,576 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-24 23:16:49,578 INFO L275 PluginConnector]: CDTParser initialized [2020-10-24 23:16:49,580 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-newlib/double_req_bl_1131a.c [2020-10-24 23:16:49,655 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/edfd0df55/e92ade7af1f04bcb8e3f355bf654d0be/FLAG7f088a927 [2020-10-24 23:16:50,326 INFO L306 CDTParser]: Found 1 translation units. [2020-10-24 23:16:50,327 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/double_req_bl_1131a.c [2020-10-24 23:16:50,340 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/edfd0df55/e92ade7af1f04bcb8e3f355bf654d0be/FLAG7f088a927 [2020-10-24 23:16:50,673 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/edfd0df55/e92ade7af1f04bcb8e3f355bf654d0be [2020-10-24 23:16:50,677 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-24 23:16:50,685 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-24 23:16:50,687 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-24 23:16:50,687 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-24 23:16:50,691 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-24 23:16:50,693 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 11:16:50" (1/1) ... [2020-10-24 23:16:50,696 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@74f61108 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:16:50, skipping insertion in model container [2020-10-24 23:16:50,697 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 11:16:50" (1/1) ... [2020-10-24 23:16:50,706 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-24 23:16:50,732 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-24 23:16:51,013 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-24 23:16:51,023 INFO L203 MainTranslator]: Completed pre-run [2020-10-24 23:16:51,092 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-24 23:16:51,126 INFO L208 MainTranslator]: Completed translation [2020-10-24 23:16:51,127 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:16:51 WrapperNode [2020-10-24 23:16:51,127 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-24 23:16:51,129 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-24 23:16:51,129 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-24 23:16:51,129 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-24 23:16:51,138 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:16:51" (1/1) ... [2020-10-24 23:16:51,152 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:16:51" (1/1) ... [2020-10-24 23:16:51,195 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-24 23:16:51,197 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-24 23:16:51,197 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-24 23:16:51,197 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-24 23:16:51,208 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:16:51" (1/1) ... [2020-10-24 23:16:51,208 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:16:51" (1/1) ... [2020-10-24 23:16:51,223 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:16:51" (1/1) ... [2020-10-24 23:16:51,224 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:16:51" (1/1) ... [2020-10-24 23:16:51,254 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:16:51" (1/1) ... [2020-10-24 23:16:51,264 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:16:51" (1/1) ... [2020-10-24 23:16:51,276 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:16:51" (1/1) ... [2020-10-24 23:16:51,284 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-24 23:16:51,285 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-24 23:16:51,285 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-24 23:16:51,286 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-24 23:16:51,286 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:16:51" (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 [2020-10-24 23:16:51,385 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-24 23:16:51,385 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-24 23:16:51,386 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-24 23:16:51,387 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-10-24 23:16:51,387 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-10-24 23:16:51,387 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-24 23:16:51,388 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-24 23:16:51,388 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-24 23:16:51,389 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2020-10-24 23:16:51,390 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-24 23:16:52,172 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-24 23:16:52,173 INFO L298 CfgBuilder]: Removed 26 assume(true) statements. [2020-10-24 23:16:52,174 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 11:16:52 BoogieIcfgContainer [2020-10-24 23:16:52,175 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-24 23:16:52,177 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-24 23:16:52,177 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-24 23:16:52,181 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-24 23:16:52,181 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 11:16:50" (1/3) ... [2020-10-24 23:16:52,182 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2154589 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 11:16:52, skipping insertion in model container [2020-10-24 23:16:52,182 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:16:51" (2/3) ... [2020-10-24 23:16:52,182 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2154589 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 11:16:52, skipping insertion in model container [2020-10-24 23:16:52,183 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 11:16:52" (3/3) ... [2020-10-24 23:16:52,184 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1131a.c [2020-10-24 23:16:52,197 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-24 23:16:52,203 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-24 23:16:52,217 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-24 23:16:52,248 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-24 23:16:52,249 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-24 23:16:52,249 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-24 23:16:52,249 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-24 23:16:52,249 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-24 23:16:52,249 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-24 23:16:52,250 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-24 23:16:52,250 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-24 23:16:52,268 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states. [2020-10-24 23:16:52,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-24 23:16:52,275 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 23:16:52,276 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 23:16:52,277 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 23:16:52,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 23:16:52,284 INFO L82 PathProgramCache]: Analyzing trace with hash 2036387893, now seen corresponding path program 1 times [2020-10-24 23:16:52,295 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-24 23:16:52,296 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [449932401] [2020-10-24 23:16:52,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 23:16:52,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 23:16:52,459 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 23:16:52,460 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [449932401] [2020-10-24 23:16:52,461 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-24 23:16:52,461 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-24 23:16:52,462 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1081727552] [2020-10-24 23:16:52,470 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-24 23:16:52,470 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-24 23:16:52,485 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-24 23:16:52,486 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-24 23:16:52,489 INFO L87 Difference]: Start difference. First operand 61 states. Second operand 2 states. [2020-10-24 23:16:52,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 23:16:52,516 INFO L93 Difference]: Finished difference Result 119 states and 207 transitions. [2020-10-24 23:16:52,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-24 23:16:52,517 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 13 [2020-10-24 23:16:52,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 23:16:52,530 INFO L225 Difference]: With dead ends: 119 [2020-10-24 23:16:52,531 INFO L226 Difference]: Without dead ends: 56 [2020-10-24 23:16:52,535 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-24 23:16:52,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-10-24 23:16:52,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2020-10-24 23:16:52,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-10-24 23:16:52,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 82 transitions. [2020-10-24 23:16:52,593 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 82 transitions. Word has length 13 [2020-10-24 23:16:52,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 23:16:52,593 INFO L481 AbstractCegarLoop]: Abstraction has 56 states and 82 transitions. [2020-10-24 23:16:52,594 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-24 23:16:52,594 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 82 transitions. [2020-10-24 23:16:52,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-24 23:16:52,595 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 23:16:52,595 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 23:16:52,596 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-24 23:16:52,596 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 23:16:52,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 23:16:52,597 INFO L82 PathProgramCache]: Analyzing trace with hash -794890891, now seen corresponding path program 1 times [2020-10-24 23:16:52,597 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-24 23:16:52,598 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [521255972] [2020-10-24 23:16:52,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 23:16:52,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-24 23:16:52,705 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-24 23:16:52,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-24 23:16:52,803 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-24 23:16:52,866 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-24 23:16:52,867 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-24 23:16:52,868 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-24 23:16:52,937 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 11:16:52 BoogieIcfgContainer [2020-10-24 23:16:52,938 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-24 23:16:52,939 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-24 23:16:52,940 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-24 23:16:52,940 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-24 23:16:52,941 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 11:16:52" (3/4) ... [2020-10-24 23:16:52,944 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-10-24 23:16:52,944 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-24 23:16:52,947 INFO L168 Benchmark]: Toolchain (without parser) took 2266.58 ms. Allocated memory was 54.5 MB in the beginning and 67.1 MB in the end (delta: 12.6 MB). Free memory was 30.9 MB in the beginning and 32.8 MB in the end (delta: -1.8 MB). Peak memory consumption was 13.8 MB. Max. memory is 16.1 GB. [2020-10-24 23:16:52,948 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 44.0 MB. Free memory was 23.7 MB in the beginning and 23.7 MB in the end (delta: 70.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-24 23:16:52,949 INFO L168 Benchmark]: CACSL2BoogieTranslator took 440.73 ms. Allocated memory is still 54.5 MB. Free memory was 30.2 MB in the beginning and 30.4 MB in the end (delta: -136.5 kB). Peak memory consumption was 5.5 MB. Max. memory is 16.1 GB. [2020-10-24 23:16:52,950 INFO L168 Benchmark]: Boogie Procedure Inliner took 67.27 ms. Allocated memory is still 54.5 MB. Free memory was 30.4 MB in the beginning and 27.8 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-24 23:16:52,951 INFO L168 Benchmark]: Boogie Preprocessor took 87.51 ms. Allocated memory is still 54.5 MB. Free memory was 27.8 MB in the beginning and 25.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-24 23:16:52,952 INFO L168 Benchmark]: RCFGBuilder took 890.00 ms. Allocated memory was 54.5 MB in the beginning and 67.1 MB in the end (delta: 12.6 MB). Free memory was 25.5 MB in the beginning and 45.4 MB in the end (delta: -19.9 MB). Peak memory consumption was 7.5 MB. Max. memory is 16.1 GB. [2020-10-24 23:16:52,953 INFO L168 Benchmark]: TraceAbstraction took 762.15 ms. Allocated memory is still 67.1 MB. Free memory was 45.0 MB in the beginning and 33.2 MB in the end (delta: 11.8 MB). Peak memory consumption was 13.3 MB. Max. memory is 16.1 GB. [2020-10-24 23:16:52,954 INFO L168 Benchmark]: Witness Printer took 5.05 ms. Allocated memory is still 67.1 MB. Free memory was 33.2 MB in the beginning and 32.8 MB in the end (delta: 470.3 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-24 23:16:52,959 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 44.0 MB. Free memory was 23.7 MB in the beginning and 23.7 MB in the end (delta: 70.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 440.73 ms. Allocated memory is still 54.5 MB. Free memory was 30.2 MB in the beginning and 30.4 MB in the end (delta: -136.5 kB). Peak memory consumption was 5.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 67.27 ms. Allocated memory is still 54.5 MB. Free memory was 30.4 MB in the beginning and 27.8 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 87.51 ms. Allocated memory is still 54.5 MB. Free memory was 27.8 MB in the beginning and 25.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 890.00 ms. Allocated memory was 54.5 MB in the beginning and 67.1 MB in the end (delta: 12.6 MB). Free memory was 25.5 MB in the beginning and 45.4 MB in the end (delta: -19.9 MB). Peak memory consumption was 7.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 762.15 ms. Allocated memory is still 67.1 MB. Free memory was 45.0 MB in the beginning and 33.2 MB in the end (delta: 11.8 MB). Peak memory consumption was 13.3 MB. Max. memory is 16.1 GB. * Witness Printer took 5.05 ms. Allocated memory is still 67.1 MB. Free memory was 33.2 MB in the beginning and 32.8 MB in the end (delta: 470.3 kB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 3]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of bitwiseOr at line 46, overapproximation of someUnaryDOUBLEoperation at line 22, overapproximation of someBinaryArithmeticDOUBLEoperation at line 47, overapproximation of bitwiseAnd at line 41, overapproximation of someBinaryDOUBLEComparisonOperation at line 190, overapproximation of bitwiseXor at line 42. Possible FailurePath: [L20-L23] static const double one_fmod = 1.0, Zero_fmod[] = { 0.0, -0.0, }; VAL [one_fmod=1, Zero_fmod={9:0}] [L182] double y = 1.0 / 0.0; [L183] double x = __VERIFIER_nondet_double(); [L166] __int32_t hx; VAL [one_fmod=1, Zero_fmod={9:0}] [L168] ieee_double_shape_type gh_u; [L169] gh_u.value = (x) [L170] EXPR gh_u.parts.msw [L170] (hx) = gh_u.parts.msw [L172] return (int)((__uint32_t)((hx & 0x7fffffff) - 0x7ff00000) >> 31); VAL [one_fmod=1, Zero_fmod={9:0}] [L185] COND TRUE isfinite_double(x) [L26] __int32_t n, hx, hy, hz, ix, iy, sx, i; [L27] __uint32_t lx, ly, lz; VAL [one_fmod=1, Zero_fmod={9:0}] [L30] ieee_double_shape_type ew_u; [L31] ew_u.value = (x) [L32] EXPR ew_u.parts.msw [L32] (hx) = ew_u.parts.msw [L33] EXPR ew_u.parts.lsw [L33] (lx) = ew_u.parts.lsw [L36] ieee_double_shape_type ew_u; [L37] ew_u.value = (y) [L38] EXPR ew_u.parts.msw [L38] (hy) = ew_u.parts.msw [L39] EXPR ew_u.parts.lsw [L39] (ly) = ew_u.parts.lsw [L41] sx = hx & 0x80000000 [L42] hx ^= sx [L43] hy &= 0x7fffffff VAL [one_fmod=1, Zero_fmod={9:0}] [L45-L46] COND TRUE (hy | ly) == 0 || (hx >= 0x7ff00000) || ((hy | ((ly | -ly) >> 31)) > 0x7ff00000) [L47] return (x * y) / (x * y); VAL [one_fmod=1, Zero_fmod={9:0}] [L187] double res = fmod_double(x, y); [L190] COND TRUE res != x VAL [one_fmod=1, Zero_fmod={9:0}] [L3] __assert_fail("0", "double_req_bl_1131a.c", 3, "reach_error") VAL [one_fmod=1, Zero_fmod={9:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 61 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: 87 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=61occurred 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, 29 NumberOfCodeBlocks, 29 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 12 ConstructedInterpolants, 0 QuantifiedInterpolants, 144 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.0-a4ecdab [2020-10-24 23:16:55,537 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-24 23:16:55,541 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-24 23:16:55,578 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-24 23:16:55,580 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-24 23:16:55,581 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-24 23:16:55,583 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-24 23:16:55,586 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-24 23:16:55,589 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-24 23:16:55,590 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-24 23:16:55,592 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-24 23:16:55,594 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-24 23:16:55,594 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-24 23:16:55,596 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-24 23:16:55,597 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-24 23:16:55,600 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-24 23:16:55,603 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-24 23:16:55,606 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-24 23:16:55,609 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-24 23:16:55,612 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-24 23:16:55,614 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-24 23:16:55,616 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-24 23:16:55,618 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-24 23:16:55,619 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-24 23:16:55,622 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-24 23:16:55,622 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-24 23:16:55,623 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-24 23:16:55,624 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-24 23:16:55,625 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-24 23:16:55,626 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-24 23:16:55,627 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-24 23:16:55,628 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-24 23:16:55,629 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-24 23:16:55,630 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-24 23:16:55,632 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-24 23:16:55,632 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-24 23:16:55,633 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-24 23:16:55,634 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-24 23:16:55,634 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-24 23:16:55,635 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-24 23:16:55,636 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-24 23:16:55,638 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2020-10-24 23:16:55,675 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-24 23:16:55,675 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-24 23:16:55,677 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-24 23:16:55,677 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-24 23:16:55,678 INFO L138 SettingsManager]: * Use SBE=true [2020-10-24 23:16:55,678 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-24 23:16:55,678 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-24 23:16:55,679 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-24 23:16:55,679 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-24 23:16:55,679 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-24 23:16:55,680 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-24 23:16:55,680 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-24 23:16:55,680 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-10-24 23:16:55,680 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-10-24 23:16:55,681 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-24 23:16:55,681 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-24 23:16:55,681 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-24 23:16:55,682 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-24 23:16:55,682 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-24 23:16:55,682 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-24 23:16:55,683 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-24 23:16:55,683 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-24 23:16:55,683 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-24 23:16:55,684 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-24 23:16:55,684 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-24 23:16:55,684 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-24 23:16:55,684 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2020-10-24 23:16:55,685 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-10-24 23:16:55,685 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-24 23:16:55,685 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-24 23:16:55,685 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-24 23:16:55,685 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4554d2f8799ffeb9d5e04122bbb0f9e816b3f3f5 [2020-10-24 23:16:56,072 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-24 23:16:56,101 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-24 23:16:56,104 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-24 23:16:56,105 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-24 23:16:56,106 INFO L275 PluginConnector]: CDTParser initialized [2020-10-24 23:16:56,107 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-newlib/double_req_bl_1131a.c [2020-10-24 23:16:56,198 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/be580ee85/2fa36d7b7fa44e7f9d1855829834c55d/FLAG1002c21c0 [2020-10-24 23:16:56,844 INFO L306 CDTParser]: Found 1 translation units. [2020-10-24 23:16:56,845 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/double_req_bl_1131a.c [2020-10-24 23:16:56,856 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/be580ee85/2fa36d7b7fa44e7f9d1855829834c55d/FLAG1002c21c0 [2020-10-24 23:16:57,189 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/be580ee85/2fa36d7b7fa44e7f9d1855829834c55d [2020-10-24 23:16:57,192 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-24 23:16:57,199 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-24 23:16:57,201 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-24 23:16:57,201 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-24 23:16:57,205 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-24 23:16:57,206 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 11:16:57" (1/1) ... [2020-10-24 23:16:57,210 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@47b8a9fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:16:57, skipping insertion in model container [2020-10-24 23:16:57,210 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 11:16:57" (1/1) ... [2020-10-24 23:16:57,220 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-24 23:16:57,264 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-24 23:16:57,675 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-24 23:16:57,694 INFO L203 MainTranslator]: Completed pre-run [2020-10-24 23:16:57,762 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-24 23:16:57,800 INFO L208 MainTranslator]: Completed translation [2020-10-24 23:16:57,801 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:16:57 WrapperNode [2020-10-24 23:16:57,801 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-24 23:16:57,803 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-24 23:16:57,804 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-24 23:16:57,806 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-24 23:16:57,815 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:16:57" (1/1) ... [2020-10-24 23:16:57,851 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:16:57" (1/1) ... [2020-10-24 23:16:57,906 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-24 23:16:57,907 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-24 23:16:57,907 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-24 23:16:57,910 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-24 23:16:57,922 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:16:57" (1/1) ... [2020-10-24 23:16:57,922 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:16:57" (1/1) ... [2020-10-24 23:16:57,943 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:16:57" (1/1) ... [2020-10-24 23:16:57,946 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:16:57" (1/1) ... [2020-10-24 23:16:57,976 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:16:57" (1/1) ... [2020-10-24 23:16:57,991 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:16:57" (1/1) ... [2020-10-24 23:16:58,001 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:16:57" (1/1) ... [2020-10-24 23:16:58,026 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-24 23:16:58,028 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-24 23:16:58,028 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-24 23:16:58,028 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-24 23:16:58,029 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:16:57" (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 [2020-10-24 23:16:58,113 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8 [2020-10-24 23:16:58,114 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2020-10-24 23:16:58,114 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-10-24 23:16:58,115 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-24 23:16:58,115 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE8 [2020-10-24 23:16:58,115 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2020-10-24 23:16:58,115 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-24 23:16:58,116 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-24 23:16:58,116 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2020-10-24 23:16:58,116 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-24 23:17:02,232 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-24 23:17:02,233 INFO L298 CfgBuilder]: Removed 26 assume(true) statements. [2020-10-24 23:17:02,235 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 11:17:02 BoogieIcfgContainer [2020-10-24 23:17:02,235 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-24 23:17:02,237 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-24 23:17:02,238 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-24 23:17:02,241 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-24 23:17:02,242 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 11:16:57" (1/3) ... [2020-10-24 23:17:02,243 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@355cc02d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 11:17:02, skipping insertion in model container [2020-10-24 23:17:02,243 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:16:57" (2/3) ... [2020-10-24 23:17:02,244 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@355cc02d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 11:17:02, skipping insertion in model container [2020-10-24 23:17:02,244 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 11:17:02" (3/3) ... [2020-10-24 23:17:02,246 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1131a.c [2020-10-24 23:17:02,260 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-24 23:17:02,266 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-24 23:17:02,300 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-24 23:17:02,377 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-24 23:17:02,378 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-24 23:17:02,379 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-24 23:17:02,379 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-24 23:17:02,392 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-24 23:17:02,392 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-24 23:17:02,392 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-24 23:17:02,393 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-24 23:17:02,426 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states. [2020-10-24 23:17:02,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-24 23:17:02,434 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 23:17:02,435 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 23:17:02,436 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 23:17:02,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 23:17:02,445 INFO L82 PathProgramCache]: Analyzing trace with hash 2036387893, now seen corresponding path program 1 times [2020-10-24 23:17:02,464 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-24 23:17:02,465 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [744125426] [2020-10-24 23:17:02,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2020-10-24 23:17:03,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 23:17:03,781 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 1 conjunts are in the unsatisfiable core [2020-10-24 23:17:03,786 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-24 23:17:03,805 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 23:17:03,806 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-24 23:17:03,811 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 23:17:03,813 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [744125426] [2020-10-24 23:17:03,813 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-24 23:17:03,814 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-10-24 23:17:03,815 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [336088650] [2020-10-24 23:17:03,820 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-24 23:17:03,821 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-24 23:17:03,835 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-24 23:17:03,836 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-24 23:17:03,839 INFO L87 Difference]: Start difference. First operand 61 states. Second operand 2 states. [2020-10-24 23:17:03,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 23:17:03,867 INFO L93 Difference]: Finished difference Result 119 states and 207 transitions. [2020-10-24 23:17:03,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-24 23:17:03,869 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 13 [2020-10-24 23:17:03,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 23:17:03,880 INFO L225 Difference]: With dead ends: 119 [2020-10-24 23:17:03,880 INFO L226 Difference]: Without dead ends: 56 [2020-10-24 23:17:03,884 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-24 23:17:03,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-10-24 23:17:03,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2020-10-24 23:17:03,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-10-24 23:17:03,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 82 transitions. [2020-10-24 23:17:03,934 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 82 transitions. Word has length 13 [2020-10-24 23:17:03,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 23:17:03,935 INFO L481 AbstractCegarLoop]: Abstraction has 56 states and 82 transitions. [2020-10-24 23:17:03,935 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-24 23:17:03,936 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 82 transitions. [2020-10-24 23:17:03,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-24 23:17:03,937 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 23:17:03,937 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 23:17:04,151 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-10-24 23:17:04,152 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 23:17:04,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 23:17:04,155 INFO L82 PathProgramCache]: Analyzing trace with hash -794890891, now seen corresponding path program 1 times [2020-10-24 23:17:04,156 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-24 23:17:04,156 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1967139618] [2020-10-24 23:17:04,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2020-10-24 23:17:05,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-24 23:17:05,773 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-24 23:17:07,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-24 23:17:07,313 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-24 23:17:07,476 INFO L173 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2020-10-24 23:17:07,476 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-24 23:17:07,678 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-10-24 23:17:07,732 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 11:17:07 BoogieIcfgContainer [2020-10-24 23:17:07,733 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-24 23:17:07,734 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-24 23:17:07,734 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-24 23:17:07,734 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-24 23:17:07,735 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 11:17:02" (3/4) ... [2020-10-24 23:17:07,738 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-10-24 23:17:07,801 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-24 23:17:07,802 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-24 23:17:07,805 INFO L168 Benchmark]: Toolchain (without parser) took 10609.46 ms. Allocated memory was 50.3 MB in the beginning and 65.0 MB in the end (delta: 14.7 MB). Free memory was 27.5 MB in the beginning and 39.9 MB in the end (delta: -12.4 MB). Peak memory consumption was 7.8 MB. Max. memory is 16.1 GB. [2020-10-24 23:17:07,806 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 50.3 MB. Free memory was 30.8 MB in the beginning and 30.8 MB in the end (delta: 39.3 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-24 23:17:07,807 INFO L168 Benchmark]: CACSL2BoogieTranslator took 601.02 ms. Allocated memory is still 50.3 MB. Free memory was 26.9 MB in the beginning and 26.1 MB in the end (delta: 824.7 kB). Peak memory consumption was 5.5 MB. Max. memory is 16.1 GB. [2020-10-24 23:17:07,807 INFO L168 Benchmark]: Boogie Procedure Inliner took 102.95 ms. Allocated memory is still 50.3 MB. Free memory was 26.1 MB in the beginning and 23.8 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-24 23:17:07,808 INFO L168 Benchmark]: Boogie Preprocessor took 120.11 ms. Allocated memory was 50.3 MB in the beginning and 65.0 MB in the end (delta: 14.7 MB). Free memory was 23.8 MB in the beginning and 48.9 MB in the end (delta: -25.1 MB). Peak memory consumption was 8.2 MB. Max. memory is 16.1 GB. [2020-10-24 23:17:07,809 INFO L168 Benchmark]: RCFGBuilder took 4208.02 ms. Allocated memory is still 65.0 MB. Free memory was 48.9 MB in the beginning and 32.8 MB in the end (delta: 16.1 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.1 GB. [2020-10-24 23:17:07,810 INFO L168 Benchmark]: TraceAbstraction took 5495.65 ms. Allocated memory is still 65.0 MB. Free memory was 32.5 MB in the beginning and 42.7 MB in the end (delta: -10.2 MB). Peak memory consumption was 7.8 MB. Max. memory is 16.1 GB. [2020-10-24 23:17:07,811 INFO L168 Benchmark]: Witness Printer took 68.26 ms. Allocated memory is still 65.0 MB. Free memory was 42.7 MB in the beginning and 39.9 MB in the end (delta: 2.8 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-10-24 23:17:07,816 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 50.3 MB. Free memory was 30.8 MB in the beginning and 30.8 MB in the end (delta: 39.3 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 601.02 ms. Allocated memory is still 50.3 MB. Free memory was 26.9 MB in the beginning and 26.1 MB in the end (delta: 824.7 kB). Peak memory consumption was 5.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 102.95 ms. Allocated memory is still 50.3 MB. Free memory was 26.1 MB in the beginning and 23.8 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 120.11 ms. Allocated memory was 50.3 MB in the beginning and 65.0 MB in the end (delta: 14.7 MB). Free memory was 23.8 MB in the beginning and 48.9 MB in the end (delta: -25.1 MB). Peak memory consumption was 8.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 4208.02 ms. Allocated memory is still 65.0 MB. Free memory was 48.9 MB in the beginning and 32.8 MB in the end (delta: 16.1 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.1 GB. * TraceAbstraction took 5495.65 ms. Allocated memory is still 65.0 MB. Free memory was 32.5 MB in the beginning and 42.7 MB in the end (delta: -10.2 MB). Peak memory consumption was 7.8 MB. Max. memory is 16.1 GB. * Witness Printer took 68.26 ms. Allocated memory is still 65.0 MB. Free memory was 42.7 MB in the beginning and 39.9 MB in the end (delta: 2.8 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: [L20-L23] static const double one_fmod = 1.0, Zero_fmod[] = { 0.0, -0.0, }; VAL [one_fmod=1.0, Zero_fmod={2:0}] [L182] double y = 1.0 / 0.0; [L183] double x = __VERIFIER_nondet_double(); [L166] __int32_t hx; VAL [one_fmod=1.0, Zero_fmod={2:0}] [L168] ieee_double_shape_type gh_u; [L169] gh_u.value = (x) [L170] EXPR gh_u.parts.msw [L170] (hx) = gh_u.parts.msw [L172] return (int)((__uint32_t)((hx & 0x7fffffff) - 0x7ff00000) >> 31); VAL [one_fmod=1.0, Zero_fmod={2:0}] [L185] COND TRUE isfinite_double(x) [L26] __int32_t n, hx, hy, hz, ix, iy, sx, i; [L27] __uint32_t lx, ly, lz; VAL [one_fmod=1.0, Zero_fmod={2:0}] [L30] ieee_double_shape_type ew_u; [L31] ew_u.value = (x) [L32] EXPR ew_u.parts.msw [L32] (hx) = ew_u.parts.msw [L33] EXPR ew_u.parts.lsw [L33] (lx) = ew_u.parts.lsw [L36] ieee_double_shape_type ew_u; [L37] ew_u.value = (y) [L38] EXPR ew_u.parts.msw [L38] (hy) = ew_u.parts.msw [L39] EXPR ew_u.parts.lsw [L39] (ly) = ew_u.parts.lsw [L41] sx = hx & 0x80000000 [L42] hx ^= sx [L43] hy &= 0x7fffffff VAL [one_fmod=1.0, Zero_fmod={2:0}] [L45-L46] COND TRUE (hy | ly) == 0 || (hx >= 0x7ff00000) || ((hy | ((ly | -ly) >> 31)) > 0x7ff00000) [L47] return (x * y) / (x * y); VAL [one_fmod=1.0, Zero_fmod={2:0}] [L187] double res = fmod_double(x, y); [L190] COND TRUE res != x VAL [one_fmod=1.0, Zero_fmod={2:0}] [L3] __assert_fail("0", "double_req_bl_1131a.c", 3, "reach_error") VAL [one_fmod=1.0, Zero_fmod={2:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 61 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 5.3s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 87 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 24 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=61occurred 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, 2.6s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 29 NumberOfCodeBlocks, 29 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 24 ConstructedInterpolants, 0 QuantifiedInterpolants, 288 SizeOfPredicates, 0 NumberOfNonLiveVariables, 55 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...