./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/float-newlib/double_req_bl_1012b.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version cbb939d5 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 ../../../trunk/examples/svcomp/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 ../../../trunk/examples/svcomp/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-cbb939d [2020-11-23 16:33:12,218 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-23 16:33:12,222 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-23 16:33:12,265 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-23 16:33:12,266 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-23 16:33:12,268 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-23 16:33:12,270 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-23 16:33:12,273 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-23 16:33:12,275 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-23 16:33:12,277 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-23 16:33:12,278 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-23 16:33:12,280 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-23 16:33:12,281 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-23 16:33:12,282 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-23 16:33:12,284 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-23 16:33:12,286 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-23 16:33:12,287 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-23 16:33:12,288 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-23 16:33:12,291 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-23 16:33:12,294 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-23 16:33:12,296 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-23 16:33:12,298 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-23 16:33:12,300 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-23 16:33:12,301 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-23 16:33:12,305 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-23 16:33:12,306 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-23 16:33:12,306 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-23 16:33:12,307 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-23 16:33:12,308 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-23 16:33:12,309 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-23 16:33:12,310 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-23 16:33:12,311 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-23 16:33:12,312 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-23 16:33:12,313 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-23 16:33:12,315 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-23 16:33:12,315 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-23 16:33:12,316 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-23 16:33:12,317 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-23 16:33:12,317 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-23 16:33:12,318 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-23 16:33:12,319 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-23 16:33:12,321 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-23 16:33:12,379 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-23 16:33:12,380 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-23 16:33:12,381 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-23 16:33:12,381 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-23 16:33:12,382 INFO L138 SettingsManager]: * Use SBE=true [2020-11-23 16:33:12,382 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-23 16:33:12,382 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-23 16:33:12,382 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-23 16:33:12,382 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-23 16:33:12,383 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-23 16:33:12,383 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-23 16:33:12,383 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-23 16:33:12,383 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-23 16:33:12,383 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-23 16:33:12,384 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-23 16:33:12,384 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-23 16:33:12,384 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-23 16:33:12,384 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-23 16:33:12,384 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-23 16:33:12,385 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-23 16:33:12,385 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-23 16:33:12,385 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-23 16:33:12,385 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-23 16:33:12,386 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-23 16:33:12,386 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-23 16:33:12,386 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-23 16:33:12,386 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-23 16:33:12,386 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-23 16:33:12,386 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-23 16:33:12,387 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 375bec20b72ecdcbd44e4f617a51a92835ad48e7 [2020-11-23 16:33:12,805 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-23 16:33:12,857 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-23 16:33:12,863 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-23 16:33:12,865 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-23 16:33:12,867 INFO L275 PluginConnector]: CDTParser initialized [2020-11-23 16:33:12,869 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1012b.c [2020-11-23 16:33:12,959 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/db6a84a9e/4664e433b90c4c7b9154c7b2397be561/FLAG3ab6197c0 [2020-11-23 16:33:13,580 INFO L306 CDTParser]: Found 1 translation units. [2020-11-23 16:33:13,581 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/double_req_bl_1012b.c [2020-11-23 16:33:13,590 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/db6a84a9e/4664e433b90c4c7b9154c7b2397be561/FLAG3ab6197c0 [2020-11-23 16:33:13,912 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/db6a84a9e/4664e433b90c4c7b9154c7b2397be561 [2020-11-23 16:33:13,916 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-23 16:33:13,925 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-23 16:33:13,930 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-23 16:33:13,930 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-23 16:33:13,935 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-23 16:33:13,937 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 04:33:13" (1/1) ... [2020-11-23 16:33:13,942 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@a53713f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:33:13, skipping insertion in model container [2020-11-23 16:33:13,943 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 04:33:13" (1/1) ... [2020-11-23 16:33:13,952 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-23 16:33:13,976 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-23 16:33:14,211 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-23 16:33:14,221 INFO L203 MainTranslator]: Completed pre-run [2020-11-23 16:33:14,261 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-23 16:33:14,282 INFO L208 MainTranslator]: Completed translation [2020-11-23 16:33:14,283 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:33:14 WrapperNode [2020-11-23 16:33:14,283 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-23 16:33:14,285 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-23 16:33:14,285 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-23 16:33:14,285 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-23 16:33:14,295 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:33:14" (1/1) ... [2020-11-23 16:33:14,307 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:33:14" (1/1) ... [2020-11-23 16:33:14,334 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-23 16:33:14,336 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-23 16:33:14,336 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-23 16:33:14,336 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-23 16:33:14,347 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:33:14" (1/1) ... [2020-11-23 16:33:14,348 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:33:14" (1/1) ... [2020-11-23 16:33:14,351 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:33:14" (1/1) ... [2020-11-23 16:33:14,352 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:33:14" (1/1) ... [2020-11-23 16:33:14,360 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:33:14" (1/1) ... [2020-11-23 16:33:14,365 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:33:14" (1/1) ... [2020-11-23 16:33:14,368 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:33:14" (1/1) ... [2020-11-23 16:33:14,371 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-23 16:33:14,373 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-23 16:33:14,373 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-23 16:33:14,373 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-23 16:33:14,375 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:33:14" (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 [2020-11-23 16:33:14,461 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-23 16:33:14,462 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-23 16:33:14,462 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-11-23 16:33:14,463 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-23 16:33:14,463 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-11-23 16:33:14,463 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-23 16:33:14,463 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-23 16:33:14,464 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-23 16:33:14,464 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-23 16:33:14,915 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-23 16:33:14,916 INFO L298 CfgBuilder]: Removed 16 assume(true) statements. [2020-11-23 16:33:14,917 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 04:33:14 BoogieIcfgContainer [2020-11-23 16:33:14,918 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-23 16:33:14,931 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-23 16:33:14,931 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-23 16:33:14,935 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-23 16:33:14,935 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 04:33:13" (1/3) ... [2020-11-23 16:33:14,936 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65ce1cfd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 04:33:14, skipping insertion in model container [2020-11-23 16:33:14,936 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:33:14" (2/3) ... [2020-11-23 16:33:14,937 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65ce1cfd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 04:33:14, skipping insertion in model container [2020-11-23 16:33:14,937 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 04:33:14" (3/3) ... [2020-11-23 16:33:14,939 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1012b.c [2020-11-23 16:33:14,954 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-23 16:33:14,957 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-23 16:33:14,968 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-23 16:33:14,999 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-23 16:33:14,999 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-23 16:33:14,999 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-23 16:33:14,999 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-23 16:33:14,999 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-23 16:33:15,000 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-23 16:33:15,000 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-23 16:33:15,000 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-23 16:33:15,015 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states. [2020-11-23 16:33:15,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-23 16:33:15,021 INFO L414 BasicCegarLoop]: Found error trace [2020-11-23 16:33:15,022 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-23 16:33:15,022 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-23 16:33:15,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-23 16:33:15,029 INFO L82 PathProgramCache]: Analyzing trace with hash -969083750, now seen corresponding path program 1 times [2020-11-23 16:33:15,040 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-23 16:33:15,041 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1153015999] [2020-11-23 16:33:15,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-23 16:33:15,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-23 16:33:15,208 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-23 16:33:15,209 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1153015999] [2020-11-23 16:33:15,210 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-23 16:33:15,210 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-23 16:33:15,211 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1251206376] [2020-11-23 16:33:15,217 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-23 16:33:15,218 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-23 16:33:15,235 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-23 16:33:15,236 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-23 16:33:15,239 INFO L87 Difference]: Start difference. First operand 19 states. Second operand 2 states. [2020-11-23 16:33:15,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-23 16:33:15,261 INFO L93 Difference]: Finished difference Result 35 states and 47 transitions. [2020-11-23 16:33:15,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-23 16:33:15,263 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 11 [2020-11-23 16:33:15,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-23 16:33:15,275 INFO L225 Difference]: With dead ends: 35 [2020-11-23 16:33:15,275 INFO L226 Difference]: Without dead ends: 15 [2020-11-23 16:33:15,279 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 [2020-11-23 16:33:15,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2020-11-23 16:33:15,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2020-11-23 16:33:15,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2020-11-23 16:33:15,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 14 transitions. [2020-11-23 16:33:15,321 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 14 transitions. Word has length 11 [2020-11-23 16:33:15,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-23 16:33:15,321 INFO L481 AbstractCegarLoop]: Abstraction has 15 states and 14 transitions. [2020-11-23 16:33:15,322 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-23 16:33:15,322 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 14 transitions. [2020-11-23 16:33:15,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-11-23 16:33:15,323 INFO L414 BasicCegarLoop]: Found error trace [2020-11-23 16:33:15,323 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-23 16:33:15,323 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-23 16:33:15,323 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-23 16:33:15,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-23 16:33:15,325 INFO L82 PathProgramCache]: Analyzing trace with hash 657368916, now seen corresponding path program 1 times [2020-11-23 16:33:15,325 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-23 16:33:15,325 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1237026859] [2020-11-23 16:33:15,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-23 16:33:15,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-23 16:33:15,536 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-23 16:33:15,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-23 16:33:15,607 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-23 16:33:15,647 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-23 16:33:15,648 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-23 16:33:15,649 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-23 16:33:15,684 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 04:33:15 BoogieIcfgContainer [2020-11-23 16:33:15,685 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-23 16:33:15,686 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-23 16:33:15,686 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-23 16:33:15,686 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-23 16:33:15,687 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 04:33:14" (3/4) ... [2020-11-23 16:33:15,691 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-11-23 16:33:15,691 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-23 16:33:15,695 INFO L168 Benchmark]: Toolchain (without parser) took 1774.55 ms. Allocated memory was 54.5 MB in the beginning and 67.1 MB in the end (delta: 12.6 MB). Free memory was 31.4 MB in the beginning and 40.6 MB in the end (delta: -9.2 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2020-11-23 16:33:15,696 INFO L168 Benchmark]: CDTParser took 0.39 ms. Allocated memory is still 41.9 MB. Free memory was 19.7 MB in the beginning and 19.7 MB in the end (delta: 70.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-23 16:33:15,697 INFO L168 Benchmark]: CACSL2BoogieTranslator took 353.98 ms. Allocated memory is still 54.5 MB. Free memory was 30.8 MB in the beginning and 33.5 MB in the end (delta: -2.8 MB). Peak memory consumption was 7.8 MB. Max. memory is 16.1 GB. [2020-11-23 16:33:15,698 INFO L168 Benchmark]: Boogie Procedure Inliner took 50.17 ms. Allocated memory is still 54.5 MB. Free memory was 33.5 MB in the beginning and 31.8 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-23 16:33:15,699 INFO L168 Benchmark]: Boogie Preprocessor took 36.26 ms. Allocated memory is still 54.5 MB. Free memory was 31.8 MB in the beginning and 30.5 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-23 16:33:15,700 INFO L168 Benchmark]: RCFGBuilder took 556.27 ms. Allocated memory is still 54.5 MB. Free memory was 30.5 MB in the beginning and 27.1 MB in the end (delta: 3.4 MB). Peak memory consumption was 9.7 MB. Max. memory is 16.1 GB. [2020-11-23 16:33:15,701 INFO L168 Benchmark]: TraceAbstraction took 753.99 ms. Allocated memory was 54.5 MB in the beginning and 67.1 MB in the end (delta: 12.6 MB). Free memory was 26.7 MB in the beginning and 40.9 MB in the end (delta: -14.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-23 16:33:15,701 INFO L168 Benchmark]: Witness Printer took 5.94 ms. Allocated memory is still 67.1 MB. Free memory is still 40.6 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-23 16:33:15,706 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.39 ms. Allocated memory is still 41.9 MB. Free memory was 19.7 MB in the beginning and 19.7 MB in the end (delta: 70.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 353.98 ms. Allocated memory is still 54.5 MB. Free memory was 30.8 MB in the beginning and 33.5 MB in the end (delta: -2.8 MB). Peak memory consumption was 7.8 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 50.17 ms. Allocated memory is still 54.5 MB. Free memory was 33.5 MB in the beginning and 31.8 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 36.26 ms. Allocated memory is still 54.5 MB. Free memory was 31.8 MB in the beginning and 30.5 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 556.27 ms. Allocated memory is still 54.5 MB. Free memory was 30.5 MB in the beginning and 27.1 MB in the end (delta: 3.4 MB). Peak memory consumption was 9.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 753.99 ms. Allocated memory was 54.5 MB in the beginning and 67.1 MB in the end (delta: 12.6 MB). Free memory was 26.7 MB in the beginning and 40.9 MB in the end (delta: -14.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 5.94 ms. Allocated memory is still 67.1 MB. Free memory is still 40.6 MB. 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, 0.2s 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-cbb939d [2020-11-23 16:33:18,424 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-23 16:33:18,427 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-23 16:33:18,470 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-23 16:33:18,471 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-23 16:33:18,473 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-23 16:33:18,474 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-23 16:33:18,477 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-23 16:33:18,479 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-23 16:33:18,480 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-23 16:33:18,482 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-23 16:33:18,483 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-23 16:33:18,484 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-23 16:33:18,486 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-23 16:33:18,487 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-23 16:33:18,489 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-23 16:33:18,490 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-23 16:33:18,491 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-23 16:33:18,493 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-23 16:33:18,496 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-23 16:33:18,498 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-23 16:33:18,501 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-23 16:33:18,503 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-23 16:33:18,504 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-23 16:33:18,507 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-23 16:33:18,508 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-23 16:33:18,508 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-23 16:33:18,510 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-23 16:33:18,510 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-23 16:33:18,512 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-23 16:33:18,512 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-23 16:33:18,514 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-23 16:33:18,515 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-23 16:33:18,516 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-23 16:33:18,517 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-23 16:33:18,517 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-23 16:33:18,519 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-23 16:33:18,519 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-23 16:33:18,519 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-23 16:33:18,520 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-23 16:33:18,521 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-23 16:33:18,525 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2020-11-23 16:33:18,576 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-23 16:33:18,577 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-23 16:33:18,581 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-23 16:33:18,582 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-23 16:33:18,582 INFO L138 SettingsManager]: * Use SBE=true [2020-11-23 16:33:18,582 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-23 16:33:18,583 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-23 16:33:18,583 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-23 16:33:18,583 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-23 16:33:18,583 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-23 16:33:18,584 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-23 16:33:18,585 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-23 16:33:18,585 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-11-23 16:33:18,585 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-11-23 16:33:18,585 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-23 16:33:18,585 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-23 16:33:18,585 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-23 16:33:18,586 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-23 16:33:18,586 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-23 16:33:18,586 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-23 16:33:18,586 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-23 16:33:18,587 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-23 16:33:18,587 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-23 16:33:18,587 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-23 16:33:18,588 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-23 16:33:18,588 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-23 16:33:18,588 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2020-11-23 16:33:18,588 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-11-23 16:33:18,588 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-23 16:33:18,589 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-23 16:33:18,589 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-23 16:33:18,589 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 375bec20b72ecdcbd44e4f617a51a92835ad48e7 [2020-11-23 16:33:19,073 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-23 16:33:19,112 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-23 16:33:19,116 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-23 16:33:19,117 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-23 16:33:19,120 INFO L275 PluginConnector]: CDTParser initialized [2020-11-23 16:33:19,122 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1012b.c [2020-11-23 16:33:19,220 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/49dc1b11d/d164c156b54a4ee486b18e9a061b25bc/FLAGf980d07a9 [2020-11-23 16:33:19,847 INFO L306 CDTParser]: Found 1 translation units. [2020-11-23 16:33:19,848 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/double_req_bl_1012b.c [2020-11-23 16:33:19,858 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/49dc1b11d/d164c156b54a4ee486b18e9a061b25bc/FLAGf980d07a9 [2020-11-23 16:33:20,198 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/49dc1b11d/d164c156b54a4ee486b18e9a061b25bc [2020-11-23 16:33:20,204 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-23 16:33:20,210 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-23 16:33:20,212 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-23 16:33:20,212 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-23 16:33:20,216 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-23 16:33:20,217 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 04:33:20" (1/1) ... [2020-11-23 16:33:20,221 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7f63983b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:33:20, skipping insertion in model container [2020-11-23 16:33:20,221 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 04:33:20" (1/1) ... [2020-11-23 16:33:20,237 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-23 16:33:20,261 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-23 16:33:20,473 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-23 16:33:20,489 INFO L203 MainTranslator]: Completed pre-run [2020-11-23 16:33:20,523 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-23 16:33:20,556 INFO L208 MainTranslator]: Completed translation [2020-11-23 16:33:20,557 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:33:20 WrapperNode [2020-11-23 16:33:20,557 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-23 16:33:20,559 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-23 16:33:20,559 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-23 16:33:20,559 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-23 16:33:20,568 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:33:20" (1/1) ... [2020-11-23 16:33:20,582 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:33:20" (1/1) ... [2020-11-23 16:33:20,610 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-23 16:33:20,611 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-23 16:33:20,612 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-23 16:33:20,612 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-23 16:33:20,622 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:33:20" (1/1) ... [2020-11-23 16:33:20,623 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:33:20" (1/1) ... [2020-11-23 16:33:20,628 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:33:20" (1/1) ... [2020-11-23 16:33:20,629 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:33:20" (1/1) ... [2020-11-23 16:33:20,640 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:33:20" (1/1) ... [2020-11-23 16:33:20,645 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:33:20" (1/1) ... [2020-11-23 16:33:20,648 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:33:20" (1/1) ... [2020-11-23 16:33:20,652 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-23 16:33:20,653 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-23 16:33:20,654 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-23 16:33:20,654 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-23 16:33:20,655 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:33:20" (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 [2020-11-23 16:33:20,745 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8 [2020-11-23 16:33:20,746 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2020-11-23 16:33:20,746 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-11-23 16:33:20,746 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-23 16:33:20,746 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2020-11-23 16:33:20,746 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-23 16:33:20,746 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-23 16:33:20,747 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2020-11-23 16:33:20,747 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-23 16:33:21,272 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-23 16:33:21,273 INFO L298 CfgBuilder]: Removed 16 assume(true) statements. [2020-11-23 16:33:21,276 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 04:33:21 BoogieIcfgContainer [2020-11-23 16:33:21,277 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-23 16:33:21,280 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-23 16:33:21,281 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-23 16:33:21,286 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-23 16:33:21,286 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 04:33:20" (1/3) ... [2020-11-23 16:33:21,289 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a97854 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 04:33:21, skipping insertion in model container [2020-11-23 16:33:21,289 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:33:20" (2/3) ... [2020-11-23 16:33:21,290 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a97854 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 04:33:21, skipping insertion in model container [2020-11-23 16:33:21,292 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 04:33:21" (3/3) ... [2020-11-23 16:33:21,294 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1012b.c [2020-11-23 16:33:21,317 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-23 16:33:21,322 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-23 16:33:21,335 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-23 16:33:21,383 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-23 16:33:21,383 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-23 16:33:21,384 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-23 16:33:21,384 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-23 16:33:21,385 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-23 16:33:21,385 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-23 16:33:21,385 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-23 16:33:21,385 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-23 16:33:21,402 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states. [2020-11-23 16:33:21,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-23 16:33:21,410 INFO L414 BasicCegarLoop]: Found error trace [2020-11-23 16:33:21,411 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-23 16:33:21,412 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-23 16:33:21,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-23 16:33:21,422 INFO L82 PathProgramCache]: Analyzing trace with hash -969083750, now seen corresponding path program 1 times [2020-11-23 16:33:21,438 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-23 16:33:21,439 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2129735302] [2020-11-23 16:33:21,440 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 [2020-11-23 16:33:21,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-23 16:33:21,599 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 1 conjunts are in the unsatisfiable core [2020-11-23 16:33:21,606 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-23 16:33:21,629 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-23 16:33:21,629 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-23 16:33:21,636 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-23 16:33:21,637 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2129735302] [2020-11-23 16:33:21,638 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-23 16:33:21,639 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-11-23 16:33:21,640 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1384866104] [2020-11-23 16:33:21,646 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-23 16:33:21,647 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-23 16:33:21,663 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-23 16:33:21,664 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-23 16:33:21,666 INFO L87 Difference]: Start difference. First operand 19 states. Second operand 2 states. [2020-11-23 16:33:21,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-23 16:33:21,687 INFO L93 Difference]: Finished difference Result 35 states and 47 transitions. [2020-11-23 16:33:21,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-23 16:33:21,689 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 11 [2020-11-23 16:33:21,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-23 16:33:21,701 INFO L225 Difference]: With dead ends: 35 [2020-11-23 16:33:21,701 INFO L226 Difference]: Without dead ends: 15 [2020-11-23 16:33:21,706 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 [2020-11-23 16:33:21,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2020-11-23 16:33:21,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2020-11-23 16:33:21,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2020-11-23 16:33:21,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 14 transitions. [2020-11-23 16:33:21,751 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 14 transitions. Word has length 11 [2020-11-23 16:33:21,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-23 16:33:21,752 INFO L481 AbstractCegarLoop]: Abstraction has 15 states and 14 transitions. [2020-11-23 16:33:21,753 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-23 16:33:21,753 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 14 transitions. [2020-11-23 16:33:21,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-11-23 16:33:21,754 INFO L414 BasicCegarLoop]: Found error trace [2020-11-23 16:33:21,754 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-23 16:33:21,967 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-11-23 16:33:21,971 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-23 16:33:21,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-23 16:33:21,972 INFO L82 PathProgramCache]: Analyzing trace with hash 657368916, now seen corresponding path program 1 times [2020-11-23 16:33:21,979 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-23 16:33:21,980 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [78790472] [2020-11-23 16:33:21,980 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 [2020-11-23 16:33:22,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-23 16:33:22,201 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-23 16:33:22,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-23 16:33:22,379 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-23 16:33:22,434 INFO L173 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2020-11-23 16:33:22,434 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-23 16:33:22,636 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-11-23 16:33:22,670 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 04:33:22 BoogieIcfgContainer [2020-11-23 16:33:22,670 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-23 16:33:22,671 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-23 16:33:22,671 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-23 16:33:22,672 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-23 16:33:22,672 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 04:33:21" (3/4) ... [2020-11-23 16:33:22,676 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-11-23 16:33:22,735 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-11-23 16:33:22,735 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-23 16:33:22,738 INFO L168 Benchmark]: Toolchain (without parser) took 2531.55 ms. Allocated memory was 50.3 MB in the beginning and 60.8 MB in the end (delta: 10.5 MB). Free memory was 27.1 MB in the beginning and 34.6 MB in the end (delta: -7.5 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2020-11-23 16:33:22,739 INFO L168 Benchmark]: CDTParser took 0.33 ms. Allocated memory is still 41.9 MB. Free memory was 19.6 MB in the beginning and 19.6 MB in the end (delta: 31.8 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-23 16:33:22,740 INFO L168 Benchmark]: CACSL2BoogieTranslator took 345.79 ms. Allocated memory is still 50.3 MB. Free memory was 26.4 MB in the beginning and 26.7 MB in the end (delta: -281.7 kB). Peak memory consumption was 3.4 MB. Max. memory is 16.1 GB. [2020-11-23 16:33:22,741 INFO L168 Benchmark]: Boogie Procedure Inliner took 52.10 ms. Allocated memory is still 50.3 MB. Free memory was 26.7 MB in the beginning and 24.9 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-23 16:33:22,742 INFO L168 Benchmark]: Boogie Preprocessor took 41.21 ms. Allocated memory is still 50.3 MB. Free memory was 24.9 MB in the beginning and 23.5 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-23 16:33:22,743 INFO L168 Benchmark]: RCFGBuilder took 623.53 ms. Allocated memory is still 50.3 MB. Free memory was 23.4 MB in the beginning and 31.8 MB in the end (delta: -8.5 MB). Peak memory consumption was 8.1 MB. Max. memory is 16.1 GB. [2020-11-23 16:33:22,744 INFO L168 Benchmark]: TraceAbstraction took 1390.03 ms. Allocated memory was 50.3 MB in the beginning and 60.8 MB in the end (delta: 10.5 MB). Free memory was 31.5 MB in the beginning and 36.7 MB in the end (delta: -5.2 MB). Peak memory consumption was 5.3 MB. Max. memory is 16.1 GB. [2020-11-23 16:33:22,745 INFO L168 Benchmark]: Witness Printer took 64.41 ms. Allocated memory is still 60.8 MB. Free memory was 36.7 MB in the beginning and 34.6 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-23 16:33:22,749 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33 ms. Allocated memory is still 41.9 MB. Free memory was 19.6 MB in the beginning and 19.6 MB in the end (delta: 31.8 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 345.79 ms. Allocated memory is still 50.3 MB. Free memory was 26.4 MB in the beginning and 26.7 MB in the end (delta: -281.7 kB). Peak memory consumption was 3.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 52.10 ms. Allocated memory is still 50.3 MB. Free memory was 26.7 MB in the beginning and 24.9 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 41.21 ms. Allocated memory is still 50.3 MB. Free memory was 24.9 MB in the beginning and 23.5 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 623.53 ms. Allocated memory is still 50.3 MB. Free memory was 23.4 MB in the beginning and 31.8 MB in the end (delta: -8.5 MB). Peak memory consumption was 8.1 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1390.03 ms. Allocated memory was 50.3 MB in the beginning and 60.8 MB in the end (delta: 10.5 MB). Free memory was 31.5 MB in the beginning and 36.7 MB in the end (delta: -5.2 MB). Peak memory consumption was 5.3 MB. Max. memory is 16.1 GB. * Witness Printer took 64.41 ms. Allocated memory is still 60.8 MB. Free memory was 36.7 MB in the beginning and 34.6 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 3]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [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: 1.2s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 17 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 20 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=19occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 25 NumberOfCodeBlocks, 25 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 20 ConstructedInterpolants, 0 QuantifiedInterpolants, 200 SizeOfPredicates, 0 NumberOfNonLiveVariables, 37 ConjunctsInSsa, 1 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...