./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/float-newlib/double_req_bl_0620a.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9a8b2e8d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/float-newlib/double_req_bl_0620a.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 966074c4bc45853152b23ed1081806a59c179b92 ....................................................................................................................................................................................................................................................................................................................... Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/float-newlib/double_req_bl_0620a.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 966074c4bc45853152b23ed1081806a59c179b92 ..................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN --- Real Ultimate output --- This is Ultimate 0.1.25-9a8b2e8 [2020-10-20 00:27:42,333 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-20 00:27:42,336 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-20 00:27:42,359 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-20 00:27:42,359 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-20 00:27:42,360 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-20 00:27:42,362 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-20 00:27:42,364 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-20 00:27:42,366 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-20 00:27:42,367 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-20 00:27:42,368 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-20 00:27:42,370 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-20 00:27:42,370 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-20 00:27:42,371 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-20 00:27:42,373 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-20 00:27:42,374 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-20 00:27:42,375 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-20 00:27:42,378 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-20 00:27:42,381 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-20 00:27:42,386 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-20 00:27:42,390 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-20 00:27:42,392 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-20 00:27:42,396 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-20 00:27:42,397 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-20 00:27:42,400 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-20 00:27:42,411 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-20 00:27:42,412 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-20 00:27:42,413 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-20 00:27:42,415 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-20 00:27:42,416 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-20 00:27:42,417 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-20 00:27:42,418 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-20 00:27:42,420 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-20 00:27:42,421 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-20 00:27:42,422 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-20 00:27:42,423 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-20 00:27:42,424 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-20 00:27:42,424 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-20 00:27:42,424 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-20 00:27:42,425 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-20 00:27:42,427 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-20 00:27:42,429 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-20 00:27:42,478 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-20 00:27:42,478 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-20 00:27:42,480 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-20 00:27:42,480 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-20 00:27:42,481 INFO L138 SettingsManager]: * Use SBE=true [2020-10-20 00:27:42,481 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-20 00:27:42,481 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-20 00:27:42,481 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-20 00:27:42,482 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-20 00:27:42,482 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-20 00:27:42,483 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-20 00:27:42,483 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-20 00:27:42,483 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-20 00:27:42,484 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-20 00:27:42,484 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-20 00:27:42,484 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-20 00:27:42,484 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-20 00:27:42,485 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-20 00:27:42,485 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-20 00:27:42,485 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-20 00:27:42,485 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-20 00:27:42,486 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-20 00:27:42,486 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-20 00:27:42,486 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-20 00:27:42,486 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-20 00:27:42,487 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-20 00:27:42,487 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-20 00:27:42,487 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-20 00:27:42,487 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-20 00:27:42,488 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 966074c4bc45853152b23ed1081806a59c179b92 [2020-10-20 00:27:42,708 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-20 00:27:42,720 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-20 00:27:42,726 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-20 00:27:42,728 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-20 00:27:42,729 INFO L275 PluginConnector]: CDTParser initialized [2020-10-20 00:27:42,730 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-newlib/double_req_bl_0620a.c [2020-10-20 00:27:42,812 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4ba775f3d/a6b02c1f7c8b4ef6a7d5afc4bf042f8b/FLAGadf196e50 [2020-10-20 00:27:43,382 INFO L306 CDTParser]: Found 1 translation units. [2020-10-20 00:27:43,383 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/double_req_bl_0620a.c [2020-10-20 00:27:43,389 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4ba775f3d/a6b02c1f7c8b4ef6a7d5afc4bf042f8b/FLAGadf196e50 [2020-10-20 00:27:43,741 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4ba775f3d/a6b02c1f7c8b4ef6a7d5afc4bf042f8b [2020-10-20 00:27:43,745 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-20 00:27:43,753 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-20 00:27:43,754 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-20 00:27:43,754 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-20 00:27:43,758 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-20 00:27:43,759 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 12:27:43" (1/1) ... [2020-10-20 00:27:43,763 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@68986b29 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:27:43, skipping insertion in model container [2020-10-20 00:27:43,763 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 12:27:43" (1/1) ... [2020-10-20 00:27:43,771 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-20 00:27:43,805 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-20 00:27:44,061 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 00:27:44,073 INFO L203 MainTranslator]: Completed pre-run [2020-10-20 00:27:44,120 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 00:27:44,142 INFO L208 MainTranslator]: Completed translation [2020-10-20 00:27:44,143 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:27:44 WrapperNode [2020-10-20 00:27:44,143 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-20 00:27:44,144 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-20 00:27:44,144 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-20 00:27:44,145 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-20 00:27:44,151 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:27:44" (1/1) ... [2020-10-20 00:27:44,165 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:27:44" (1/1) ... [2020-10-20 00:27:44,199 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-20 00:27:44,200 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-20 00:27:44,200 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-20 00:27:44,200 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-20 00:27:44,211 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:27:44" (1/1) ... [2020-10-20 00:27:44,211 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:27:44" (1/1) ... [2020-10-20 00:27:44,216 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:27:44" (1/1) ... [2020-10-20 00:27:44,216 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:27:44" (1/1) ... [2020-10-20 00:27:44,231 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:27:44" (1/1) ... [2020-10-20 00:27:44,237 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:27:44" (1/1) ... [2020-10-20 00:27:44,240 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:27:44" (1/1) ... [2020-10-20 00:27:44,245 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-20 00:27:44,245 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-20 00:27:44,246 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-20 00:27:44,246 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-20 00:27:44,247 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:27:44" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-20 00:27:44,322 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-20 00:27:44,322 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-20 00:27:44,323 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-10-20 00:27:44,323 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-20 00:27:44,323 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-10-20 00:27:44,323 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-20 00:27:44,323 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-20 00:27:44,324 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-20 00:27:44,324 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2020-10-20 00:27:44,324 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-20 00:27:44,833 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-20 00:27:44,834 INFO L298 CfgBuilder]: Removed 22 assume(true) statements. [2020-10-20 00:27:44,835 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 12:27:44 BoogieIcfgContainer [2020-10-20 00:27:44,837 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-20 00:27:44,838 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-20 00:27:44,840 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-20 00:27:44,846 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-20 00:27:44,848 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.10 12:27:43" (1/3) ... [2020-10-20 00:27:44,849 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@437d6e21 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 12:27:44, skipping insertion in model container [2020-10-20 00:27:44,851 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:27:44" (2/3) ... [2020-10-20 00:27:44,852 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@437d6e21 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 12:27:44, skipping insertion in model container [2020-10-20 00:27:44,852 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 12:27:44" (3/3) ... [2020-10-20 00:27:44,854 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_0620a.c [2020-10-20 00:27:44,871 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-20 00:27:44,876 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-20 00:27:44,886 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-20 00:27:44,909 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-20 00:27:44,909 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-20 00:27:44,909 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-20 00:27:44,910 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-20 00:27:44,910 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-20 00:27:44,910 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-20 00:27:44,910 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-20 00:27:44,911 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-20 00:27:44,925 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states. [2020-10-20 00:27:44,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-20 00:27:44,930 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 00:27:44,931 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 00:27:44,932 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 00:27:44,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 00:27:44,937 INFO L82 PathProgramCache]: Analyzing trace with hash 2040843078, now seen corresponding path program 1 times [2020-10-20 00:27:44,945 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 00:27:44,945 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1062862722] [2020-10-20 00:27:44,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 00:27:45,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 00:27:45,126 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 00:27:45,127 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1062862722] [2020-10-20 00:27:45,129 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 00:27:45,129 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-20 00:27:45,130 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1315835947] [2020-10-20 00:27:45,136 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-20 00:27:45,136 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 00:27:45,149 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-20 00:27:45,150 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-20 00:27:45,152 INFO L87 Difference]: Start difference. First operand 40 states. Second operand 2 states. [2020-10-20 00:27:45,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 00:27:45,175 INFO L93 Difference]: Finished difference Result 77 states and 121 transitions. [2020-10-20 00:27:45,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-20 00:27:45,176 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 11 [2020-10-20 00:27:45,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 00:27:45,187 INFO L225 Difference]: With dead ends: 77 [2020-10-20 00:27:45,187 INFO L226 Difference]: Without dead ends: 36 [2020-10-20 00:27:45,191 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-20 00:27:45,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-10-20 00:27:45,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2020-10-20 00:27:45,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-10-20 00:27:45,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 47 transitions. [2020-10-20 00:27:45,223 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 47 transitions. Word has length 11 [2020-10-20 00:27:45,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 00:27:45,224 INFO L481 AbstractCegarLoop]: Abstraction has 36 states and 47 transitions. [2020-10-20 00:27:45,224 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-20 00:27:45,225 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 47 transitions. [2020-10-20 00:27:45,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-20 00:27:45,226 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 00:27:45,226 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 00:27:45,226 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-20 00:27:45,227 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 00:27:45,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 00:27:45,227 INFO L82 PathProgramCache]: Analyzing trace with hash -1316832376, now seen corresponding path program 1 times [2020-10-20 00:27:45,227 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 00:27:45,228 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1472588233] [2020-10-20 00:27:45,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 00:27:45,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 00:27:45,317 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 00:27:45,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 00:27:45,399 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 00:27:45,432 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 00:27:45,432 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-20 00:27:45,433 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-20 00:27:45,485 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.10 12:27:45 BoogieIcfgContainer [2020-10-20 00:27:45,485 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-20 00:27:45,486 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-20 00:27:45,486 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-20 00:27:45,487 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-20 00:27:45,487 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 12:27:44" (3/4) ... [2020-10-20 00:27:45,492 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-10-20 00:27:45,492 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-20 00:27:45,495 INFO L168 Benchmark]: Toolchain (without parser) took 1746.93 ms. Allocated memory was 41.9 MB in the beginning and 46.7 MB in the end (delta: 4.7 MB). Free memory was 20.2 MB in the beginning and 22.1 MB in the end (delta: -1.9 MB). Peak memory consumption was 2.9 MB. Max. memory is 14.3 GB. [2020-10-20 00:27:45,496 INFO L168 Benchmark]: CDTParser took 0.33 ms. Allocated memory is still 32.0 MB. Free memory was 9.0 MB in the beginning and 9.0 MB in the end (delta: 47.5 kB). Peak memory consumption was 47.5 kB. Max. memory is 14.3 GB. [2020-10-20 00:27:45,497 INFO L168 Benchmark]: CACSL2BoogieTranslator took 389.60 ms. Allocated memory was 41.9 MB in the beginning and 42.5 MB in the end (delta: 524.3 kB). Free memory was 19.4 MB in the beginning and 17.8 MB in the end (delta: 1.6 MB). Peak memory consumption was 10.7 MB. Max. memory is 14.3 GB. [2020-10-20 00:27:45,498 INFO L168 Benchmark]: Boogie Procedure Inliner took 55.64 ms. Allocated memory is still 42.5 MB. Free memory was 17.6 MB in the beginning and 15.1 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 14.3 GB. [2020-10-20 00:27:45,499 INFO L168 Benchmark]: Boogie Preprocessor took 45.11 ms. Allocated memory is still 42.5 MB. Free memory was 15.1 MB in the beginning and 12.9 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.2 MB. Max. memory is 14.3 GB. [2020-10-20 00:27:45,500 INFO L168 Benchmark]: RCFGBuilder took 591.81 ms. Allocated memory was 42.5 MB in the beginning and 44.6 MB in the end (delta: 2.1 MB). Free memory was 12.8 MB in the beginning and 21.4 MB in the end (delta: -8.6 MB). Peak memory consumption was 5.7 MB. Max. memory is 14.3 GB. [2020-10-20 00:27:45,501 INFO L168 Benchmark]: TraceAbstraction took 647.24 ms. Allocated memory was 44.6 MB in the beginning and 46.7 MB in the end (delta: 2.1 MB). Free memory was 21.1 MB in the beginning and 22.4 MB in the end (delta: -1.3 MB). Peak memory consumption was 14.7 MB. Max. memory is 14.3 GB. [2020-10-20 00:27:45,502 INFO L168 Benchmark]: Witness Printer took 6.01 ms. Allocated memory is still 46.7 MB. Free memory was 22.4 MB in the beginning and 22.1 MB in the end (delta: 353.5 kB). Peak memory consumption was 353.5 kB. Max. memory is 14.3 GB. [2020-10-20 00:27:45,508 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 32.0 MB. Free memory was 9.0 MB in the beginning and 9.0 MB in the end (delta: 47.5 kB). Peak memory consumption was 47.5 kB. Max. memory is 14.3 GB. * CACSL2BoogieTranslator took 389.60 ms. Allocated memory was 41.9 MB in the beginning and 42.5 MB in the end (delta: 524.3 kB). Free memory was 19.4 MB in the beginning and 17.8 MB in the end (delta: 1.6 MB). Peak memory consumption was 10.7 MB. Max. memory is 14.3 GB. * Boogie Procedure Inliner took 55.64 ms. Allocated memory is still 42.5 MB. Free memory was 17.6 MB in the beginning and 15.1 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 14.3 GB. * Boogie Preprocessor took 45.11 ms. Allocated memory is still 42.5 MB. Free memory was 15.1 MB in the beginning and 12.9 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.2 MB. Max. memory is 14.3 GB. * RCFGBuilder took 591.81 ms. Allocated memory was 42.5 MB in the beginning and 44.6 MB in the end (delta: 2.1 MB). Free memory was 12.8 MB in the beginning and 21.4 MB in the end (delta: -8.6 MB). Peak memory consumption was 5.7 MB. Max. memory is 14.3 GB. * TraceAbstraction took 647.24 ms. Allocated memory was 44.6 MB in the beginning and 46.7 MB in the end (delta: 2.1 MB). Free memory was 21.1 MB in the beginning and 22.4 MB in the end (delta: -1.3 MB). Peak memory consumption was 14.7 MB. Max. memory is 14.3 GB. * Witness Printer took 6.01 ms. Allocated memory is still 46.7 MB. Free memory was 22.4 MB in the beginning and 22.1 MB in the end (delta: 353.5 kB). Peak memory consumption was 353.5 kB. Max. memory is 14.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 3]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someUnaryDOUBLEoperation at line 156, overapproximation of bitwiseAnd at line 75, overapproximation of someBinaryArithmeticDOUBLEoperation at line 84, overapproximation of someBinaryDOUBLEComparisonOperation at line 160. Possible FailurePath: [L39-L44] static const double atanhi_atan[] = { 4.63647609000806093515e-01, 7.85398163397448278999e-01, 9.82793723247329054082e-01, 1.57079632679489655800e+00, }; [L46-L51] static const double atanlo_atan[] = { 2.26987774529616870924e-17, 3.06161699786838301793e-17, 1.39033110312309984516e-17, 6.12323399573676603587e-17, }; [L53-L60] static const double aT_atan[] = { 3.33333333333329318027e-01, -1.99999999998764832476e-01, 1.42857142725034663711e-01, -1.11111104054623557880e-01, 9.09088713343650656196e-02, -7.69187620504482999495e-02, 6.66107313738753120669e-02, -5.83357013379057348645e-02, 4.97687799461593236017e-02, -3.65315727442169155270e-02, 1.62858201153657823623e-02, }; [L62-L64] static const double one_atan = 1.0, pi_o_4 = 7.8539816339744827900E-01, pi_o_2 = 1.5707963267948965580E+00, pi = 3.1415926535897931160E+00, huge_atan = 1.0e300; VAL [aT_atan={7:0}, atanhi_atan={11:0}, atanlo_atan={10:0}, huge_atan=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, one_atan=1, pi=785398163397448279/250000000000000000, pi_o_2=785398163397448279/500000000000000000, pi_o_4=785398163397448279/1000000000000000000] [L156] double x = -0.0; [L67] double w, s1, s2, z; [L68] __int32_t ix, hx, id; VAL [aT_atan={7:0}, atanhi_atan={11:0}, atanlo_atan={10:0}, huge_atan=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, one_atan=1, pi=785398163397448279/250000000000000000, pi_o_2=785398163397448279/500000000000000000, pi_o_4=785398163397448279/1000000000000000000] [L71] ieee_double_shape_type gh_u; [L72] gh_u.value = (x) [L73] EXPR gh_u.parts.msw [L73] (hx) = gh_u.parts.msw [L75] ix = hx & 0x7fffffff VAL [aT_atan={7:0}, atanhi_atan={11:0}, atanlo_atan={10:0}, huge_atan=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, one_atan=1, pi=785398163397448279/250000000000000000, pi_o_2=785398163397448279/500000000000000000, pi_o_4=785398163397448279/1000000000000000000] [L76] COND TRUE ix >= 0x44100000 [L77] __uint32_t low; VAL [aT_atan={7:0}, atanhi_atan={11:0}, atanlo_atan={10:0}, huge_atan=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, one_atan=1, pi=785398163397448279/250000000000000000, pi_o_2=785398163397448279/500000000000000000, pi_o_4=785398163397448279/1000000000000000000] [L79] ieee_double_shape_type gl_u; [L80] gl_u.value = (x) [L81] EXPR gl_u.parts.lsw [L81] (low) = gl_u.parts.lsw [L83] COND TRUE ix > 0x7ff00000 || (ix == 0x7ff00000 && (low != 0)) [L84] return x + x; VAL [aT_atan={7:0}, atanhi_atan={11:0}, atanlo_atan={10:0}, huge_atan=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, one_atan=1, pi=785398163397448279/250000000000000000, pi_o_2=785398163397448279/500000000000000000, pi_o_4=785398163397448279/1000000000000000000] [L157] double res = atan_double(x); [L160] EXPR res == -0.0 && __signbit_double(res) == 1 VAL [aT_atan={7:0}, atanhi_atan={11:0}, atanlo_atan={10:0}, huge_atan=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, one_atan=1, pi=785398163397448279/250000000000000000, pi_o_2=785398163397448279/500000000000000000, pi_o_4=785398163397448279/1000000000000000000] [L160] COND TRUE !(res == -0.0 && __signbit_double(res) == 1) [L3] __assert_fail("0", "double_req_bl_0620a.c", 3, "reach_error") VAL [aT_atan={7:0}, atanhi_atan={11:0}, atanlo_atan={10:0}, huge_atan=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, one_atan=1, pi=785398163397448279/250000000000000000, pi_o_2=785398163397448279/500000000000000000, pi_o_4=785398163397448279/1000000000000000000] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 40 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.5s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 50 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=40occurred 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, 24 NumberOfCodeBlocks, 24 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 10 ConstructedInterpolants, 0 QuantifiedInterpolants, 100 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request... ### Bit-precise run ### This is Ultimate 0.1.25-9a8b2e8 [2020-10-20 00:27:47,676 INFO L177 SettingsManager]: Resetting all preferences to default values... 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[2020-10-20 00:27:47,741 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-20 00:27:47,742 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-20 00:27:47,743 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-20 00:27:47,744 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-20 00:27:47,745 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-20 00:27:47,746 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-20 00:27:47,747 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-20 00:27:47,748 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-20 00:27:47,748 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-20 00:27:47,749 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-20 00:27:47,750 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-20 00:27:47,752 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2020-10-20 00:27:47,802 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-20 00:27:47,802 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-20 00:27:47,804 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-20 00:27:47,804 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-20 00:27:47,805 INFO L138 SettingsManager]: * Use SBE=true [2020-10-20 00:27:47,805 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-20 00:27:47,805 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-20 00:27:47,806 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-20 00:27:47,806 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-20 00:27:47,806 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-20 00:27:47,807 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-20 00:27:47,807 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-20 00:27:47,808 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-10-20 00:27:47,808 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-10-20 00:27:47,808 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-20 00:27:47,809 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-20 00:27:47,809 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-20 00:27:47,809 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-20 00:27:47,810 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-20 00:27:47,810 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-20 00:27:47,810 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-20 00:27:47,811 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-20 00:27:47,811 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-20 00:27:47,811 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-20 00:27:47,812 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-20 00:27:47,812 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-20 00:27:47,812 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2020-10-20 00:27:47,812 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-10-20 00:27:47,813 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-20 00:27:47,813 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-20 00:27:47,813 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-20 00:27:47,813 INFO L138 SettingsManager]: * Logic for external solver=AUFBV Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 966074c4bc45853152b23ed1081806a59c179b92 [2020-10-20 00:27:48,051 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-20 00:27:48,064 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-20 00:27:48,068 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-20 00:27:48,070 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-20 00:27:48,070 INFO L275 PluginConnector]: CDTParser initialized [2020-10-20 00:27:48,071 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-newlib/double_req_bl_0620a.c [2020-10-20 00:27:48,135 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/88455642c/865bcc07eb1744cc91697543ea262186/FLAGda85051d4 [2020-10-20 00:27:48,596 INFO L306 CDTParser]: Found 1 translation units. [2020-10-20 00:27:48,597 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/double_req_bl_0620a.c [2020-10-20 00:27:48,610 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/88455642c/865bcc07eb1744cc91697543ea262186/FLAGda85051d4 [2020-10-20 00:27:48,924 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/88455642c/865bcc07eb1744cc91697543ea262186 [2020-10-20 00:27:48,928 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-20 00:27:48,935 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-20 00:27:48,936 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-20 00:27:48,936 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-20 00:27:48,940 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-20 00:27:48,941 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 12:27:48" (1/1) ... [2020-10-20 00:27:48,944 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@36422439 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:27:48, skipping insertion in model container [2020-10-20 00:27:48,944 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 12:27:48" (1/1) ... [2020-10-20 00:27:48,952 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-20 00:27:48,992 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-20 00:27:49,344 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 00:27:49,364 INFO L203 MainTranslator]: Completed pre-run [2020-10-20 00:27:49,439 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 00:27:49,484 INFO L208 MainTranslator]: Completed translation [2020-10-20 00:27:49,484 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:27:49 WrapperNode [2020-10-20 00:27:49,484 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-20 00:27:49,485 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-20 00:27:49,485 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-20 00:27:49,486 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-20 00:27:49,495 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:27:49" (1/1) ... [2020-10-20 00:27:49,511 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:27:49" (1/1) ... [2020-10-20 00:27:49,548 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-20 00:27:49,548 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-20 00:27:49,548 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-20 00:27:49,549 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-20 00:27:49,559 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:27:49" (1/1) ... [2020-10-20 00:27:49,560 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:27:49" (1/1) ... [2020-10-20 00:27:49,567 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:27:49" (1/1) ... [2020-10-20 00:27:49,567 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:27:49" (1/1) ... [2020-10-20 00:27:49,584 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:27:49" (1/1) ... [2020-10-20 00:27:49,604 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:27:49" (1/1) ... [2020-10-20 00:27:49,611 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:27:49" (1/1) ... [2020-10-20 00:27:49,616 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-20 00:27:49,617 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-20 00:27:49,617 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-20 00:27:49,617 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-20 00:27:49,618 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:27:49" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-20 00:27:49,683 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8 [2020-10-20 00:27:49,684 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2020-10-20 00:27:49,684 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-10-20 00:27:49,684 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-20 00:27:49,684 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE8 [2020-10-20 00:27:49,684 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2020-10-20 00:27:49,685 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-20 00:27:49,685 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-20 00:27:49,685 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2020-10-20 00:27:49,685 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-20 00:28:08,644 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-20 00:28:08,644 INFO L298 CfgBuilder]: Removed 22 assume(true) statements. [2020-10-20 00:28:08,649 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 12:28:08 BoogieIcfgContainer [2020-10-20 00:28:08,650 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-20 00:28:08,652 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-20 00:28:08,653 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-20 00:28:08,659 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-20 00:28:08,661 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.10 12:27:48" (1/3) ... [2020-10-20 00:28:08,664 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5968bbd6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 12:28:08, skipping insertion in model container [2020-10-20 00:28:08,665 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:27:49" (2/3) ... [2020-10-20 00:28:08,668 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5968bbd6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 12:28:08, skipping insertion in model container [2020-10-20 00:28:08,669 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 12:28:08" (3/3) ... [2020-10-20 00:28:08,676 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_0620a.c [2020-10-20 00:28:08,693 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-20 00:28:08,706 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-20 00:28:08,725 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-20 00:28:08,763 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-20 00:28:08,764 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-20 00:28:08,764 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-20 00:28:08,764 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-20 00:28:08,765 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-20 00:28:08,765 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-20 00:28:08,765 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-20 00:28:08,765 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-20 00:28:08,786 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states. [2020-10-20 00:28:08,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-20 00:28:08,798 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 00:28:08,800 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 00:28:08,801 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 00:28:08,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 00:28:08,810 INFO L82 PathProgramCache]: Analyzing trace with hash 2040843078, now seen corresponding path program 1 times [2020-10-20 00:28:08,831 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-20 00:28:08,832 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1022718400] [2020-10-20 00:28:08,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2020-10-20 00:28:09,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 00:28:09,426 INFO L263 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 1 conjunts are in the unsatisfiable core [2020-10-20 00:28:09,434 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 00:28:09,458 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 00:28:09,458 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-20 00:28:09,464 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 00:28:09,466 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1022718400] [2020-10-20 00:28:09,467 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-20 00:28:09,468 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-10-20 00:28:09,469 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [493681075] [2020-10-20 00:28:09,478 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-20 00:28:09,478 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-20 00:28:09,493 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-20 00:28:09,495 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-20 00:28:09,498 INFO L87 Difference]: Start difference. First operand 40 states. Second operand 2 states. [2020-10-20 00:28:09,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 00:28:09,531 INFO L93 Difference]: Finished difference Result 77 states and 121 transitions. [2020-10-20 00:28:09,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-20 00:28:09,534 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 11 [2020-10-20 00:28:09,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 00:28:09,559 INFO L225 Difference]: With dead ends: 77 [2020-10-20 00:28:09,560 INFO L226 Difference]: Without dead ends: 36 [2020-10-20 00:28:09,568 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-20 00:28:09,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-10-20 00:28:09,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2020-10-20 00:28:09,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-10-20 00:28:09,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 47 transitions. [2020-10-20 00:28:09,649 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 47 transitions. Word has length 11 [2020-10-20 00:28:09,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 00:28:09,650 INFO L481 AbstractCegarLoop]: Abstraction has 36 states and 47 transitions. [2020-10-20 00:28:09,650 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-20 00:28:09,651 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 47 transitions. [2020-10-20 00:28:09,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-20 00:28:09,652 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 00:28:09,653 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 00:28:09,860 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-10-20 00:28:09,861 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 00:28:09,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 00:28:09,862 INFO L82 PathProgramCache]: Analyzing trace with hash -1316832376, now seen corresponding path program 1 times [2020-10-20 00:28:09,864 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-20 00:28:09,864 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1338588301] [2020-10-20 00:28:09,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2020-10-20 00:28:10,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 00:28:10,373 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-20 00:28:10,377 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 00:28:10,572 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 00:28:10,573 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-20 00:28:10,725 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 00:28:10,726 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1338588301] [2020-10-20 00:28:10,727 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-20 00:28:10,727 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2020-10-20 00:28:10,727 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1661346834] [2020-10-20 00:28:10,730 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-20 00:28:10,732 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-20 00:28:10,733 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-20 00:28:10,733 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-10-20 00:28:10,734 INFO L87 Difference]: Start difference. First operand 36 states and 47 transitions. Second operand 8 states. [2020-10-20 00:28:21,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 00:28:21,413 INFO L93 Difference]: Finished difference Result 59 states and 72 transitions. [2020-10-20 00:28:21,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-20 00:28:21,415 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 13 [2020-10-20 00:28:21,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 00:28:21,416 INFO L225 Difference]: With dead ends: 59 [2020-10-20 00:28:21,416 INFO L226 Difference]: Without dead ends: 32 [2020-10-20 00:28:21,419 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2020-10-20 00:28:21,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-10-20 00:28:21,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 23. [2020-10-20 00:28:21,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-10-20 00:28:21,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 26 transitions. [2020-10-20 00:28:21,426 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 26 transitions. Word has length 13 [2020-10-20 00:28:21,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 00:28:21,428 INFO L481 AbstractCegarLoop]: Abstraction has 23 states and 26 transitions. [2020-10-20 00:28:21,428 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-20 00:28:21,428 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 26 transitions. [2020-10-20 00:28:21,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-20 00:28:21,430 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 00:28:21,430 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 00:28:21,631 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-10-20 00:28:21,632 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 00:28:21,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 00:28:21,634 INFO L82 PathProgramCache]: Analyzing trace with hash 1440122883, now seen corresponding path program 1 times [2020-10-20 00:28:21,636 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-20 00:28:21,637 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [630046829] [2020-10-20 00:28:21,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2020-10-20 00:28:22,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 00:28:22,400 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-20 00:28:22,403 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 00:28:22,486 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 00:28:22,486 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-20 00:28:22,561 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 00:28:22,561 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [630046829] [2020-10-20 00:28:22,562 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-20 00:28:22,562 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 7 [2020-10-20 00:28:22,563 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1010925842] [2020-10-20 00:28:22,564 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-20 00:28:22,564 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-20 00:28:22,566 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-20 00:28:22,566 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-10-20 00:28:22,567 INFO L87 Difference]: Start difference. First operand 23 states and 26 transitions. Second operand 7 states. [2020-10-20 00:28:34,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 00:28:34,586 INFO L93 Difference]: Finished difference Result 35 states and 37 transitions. [2020-10-20 00:28:34,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-20 00:28:34,587 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 13 [2020-10-20 00:28:34,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 00:28:34,589 INFO L225 Difference]: With dead ends: 35 [2020-10-20 00:28:34,589 INFO L226 Difference]: Without dead ends: 32 [2020-10-20 00:28:34,590 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-20 00:28:34,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-10-20 00:28:34,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 25. [2020-10-20 00:28:34,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2020-10-20 00:28:34,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 28 transitions. [2020-10-20 00:28:34,595 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 28 transitions. Word has length 13 [2020-10-20 00:28:34,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 00:28:34,595 INFO L481 AbstractCegarLoop]: Abstraction has 25 states and 28 transitions. [2020-10-20 00:28:34,595 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-20 00:28:34,595 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 28 transitions. [2020-10-20 00:28:34,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-20 00:28:34,596 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 00:28:34,596 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 00:28:34,806 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-10-20 00:28:34,806 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 00:28:34,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 00:28:34,807 INFO L82 PathProgramCache]: Analyzing trace with hash 1041172097, now seen corresponding path program 1 times [2020-10-20 00:28:34,808 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-20 00:28:34,809 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1403644123] [2020-10-20 00:28:34,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 5 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with mathsat -unsat_core_generation=3 [2020-10-20 00:28:38,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 00:28:39,238 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-20 00:28:39,239 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 00:28:39,306 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 00:28:39,306 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-20 00:28:40,177 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 6 [2020-10-20 00:28:40,448 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 00:28:40,449 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1403644123] [2020-10-20 00:28:40,449 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-20 00:28:40,449 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2020-10-20 00:28:40,449 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [258449960] [2020-10-20 00:28:40,450 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-20 00:28:40,450 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-20 00:28:40,451 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-20 00:28:40,451 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-20 00:28:40,451 INFO L87 Difference]: Start difference. First operand 25 states and 28 transitions. Second operand 6 states. [2020-10-20 00:28:40,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 00:28:40,834 INFO L93 Difference]: Finished difference Result 32 states and 34 transitions. [2020-10-20 00:28:40,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-20 00:28:40,848 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 16 [2020-10-20 00:28:40,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 00:28:40,849 INFO L225 Difference]: With dead ends: 32 [2020-10-20 00:28:40,852 INFO L226 Difference]: Without dead ends: 18 [2020-10-20 00:28:40,853 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-20 00:28:40,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2020-10-20 00:28:40,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2020-10-20 00:28:40,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2020-10-20 00:28:40,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 17 transitions. [2020-10-20 00:28:40,856 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 17 transitions. Word has length 16 [2020-10-20 00:28:40,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 00:28:40,856 INFO L481 AbstractCegarLoop]: Abstraction has 18 states and 17 transitions. [2020-10-20 00:28:40,857 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-20 00:28:40,857 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 17 transitions. [2020-10-20 00:28:40,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-20 00:28:40,857 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 00:28:40,857 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 00:28:41,061 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2020-10-20 00:28:41,061 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 00:28:41,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 00:28:41,062 INFO L82 PathProgramCache]: Analyzing trace with hash 1453962584, now seen corresponding path program 1 times [2020-10-20 00:28:41,063 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-20 00:28:41,064 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2067557150] [2020-10-20 00:28:41,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 6 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with mathsat -unsat_core_generation=3 [2020-10-20 00:28:41,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 00:28:41,450 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 14 conjunts are in the unsatisfiable core [2020-10-20 00:28:41,452 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 00:28:41,534 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-20 00:28:41,564 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-20 00:28:41,565 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2067557150] [2020-10-20 00:28:41,566 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: no int: (_ BitVec 32) [2020-10-20 00:28:41,567 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [620355612] [2020-10-20 00:28:41,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 Starting monitored process 7 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2020-10-20 00:28:45,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 00:28:45,086 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 14 conjunts are in the unsatisfiable core [2020-10-20 00:28:45,088 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 00:28:45,119 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-20 00:28:45,128 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-20 00:28:45,129 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: no int: (_ BitVec 32) [2020-10-20 00:28:45,129 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1685527078] [2020-10-20 00:28:45,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 00:28:45,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 00:28:45,310 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 14 conjunts are in the unsatisfiable core [2020-10-20 00:28:45,312 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 00:28:45,363 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-20 00:28:45,370 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-20 00:28:45,371 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: no int: (_ BitVec 32) [2020-10-20 00:28:45,371 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 0 imperfect interpolant sequences. [2020-10-20 00:28:45,371 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2020-10-20 00:28:45,372 ERROR L205 FreeRefinementEngine]: Strategy WOLF failed to provide any proof altough trace is infeasible [2020-10-20 00:28:45,372 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-20 00:28:45,979 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 cvc4 --incremental --print-success --lang smt --rewrite-divk,6 mathsat -unsat_core_generation=3,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 00:28:45,998 WARN L238 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2020-10-20 00:28:45,998 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.10 12:28:45 BoogieIcfgContainer [2020-10-20 00:28:45,998 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-20 00:28:45,999 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-20 00:28:45,999 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-20 00:28:45,999 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-20 00:28:46,000 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 12:28:08" (3/4) ... [2020-10-20 00:28:46,003 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-10-20 00:28:46,003 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-20 00:28:46,005 INFO L168 Benchmark]: Toolchain (without parser) took 57075.75 ms. Allocated memory was 34.6 MB in the beginning and 56.6 MB in the end (delta: 22.0 MB). Free memory was 11.4 MB in the beginning and 33.7 MB in the end (delta: -22.3 MB). There was no memory consumed. Max. memory is 14.3 GB. [2020-10-20 00:28:46,006 INFO L168 Benchmark]: CDTParser took 0.33 ms. Allocated memory is still 33.6 MB. Free memory was 18.4 MB in the beginning and 18.4 MB in the end (delta: 40.3 kB). Peak memory consumption was 40.3 kB. Max. memory is 14.3 GB. [2020-10-20 00:28:46,007 INFO L168 Benchmark]: CACSL2BoogieTranslator took 548.40 ms. Allocated memory was 34.6 MB in the beginning and 42.5 MB in the end (delta: 7.9 MB). Free memory was 10.5 MB in the beginning and 19.3 MB in the end (delta: -8.8 MB). Peak memory consumption was 7.3 MB. Max. memory is 14.3 GB. [2020-10-20 00:28:46,008 INFO L168 Benchmark]: Boogie Procedure Inliner took 62.93 ms. Allocated memory is still 42.5 MB. Free memory was 19.3 MB in the beginning and 16.7 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 14.3 GB. [2020-10-20 00:28:46,009 INFO L168 Benchmark]: Boogie Preprocessor took 68.03 ms. Allocated memory was 42.5 MB in the beginning and 41.9 MB in the end (delta: -524.3 kB). Free memory was 16.7 MB in the beginning and 24.7 MB in the end (delta: -8.1 MB). Peak memory consumption was 5.7 MB. Max. memory is 14.3 GB. [2020-10-20 00:28:46,010 INFO L168 Benchmark]: RCFGBuilder took 19033.37 ms. Allocated memory was 41.9 MB in the beginning and 46.1 MB in the end (delta: 4.2 MB). Free memory was 24.7 MB in the beginning and 28.0 MB in the end (delta: -3.2 MB). Peak memory consumption was 22.6 MB. Max. memory is 14.3 GB. [2020-10-20 00:28:46,011 INFO L168 Benchmark]: TraceAbstraction took 37346.64 ms. Allocated memory was 46.1 MB in the beginning and 56.6 MB in the end (delta: 10.5 MB). Free memory was 27.6 MB in the beginning and 34.3 MB in the end (delta: -6.6 MB). Peak memory consumption was 3.8 MB. Max. memory is 14.3 GB. [2020-10-20 00:28:46,012 INFO L168 Benchmark]: Witness Printer took 4.74 ms. Allocated memory is still 56.6 MB. Free memory was 34.3 MB in the beginning and 33.7 MB in the end (delta: 630.0 kB). Peak memory consumption was 630.0 kB. Max. memory is 14.3 GB. [2020-10-20 00:28:46,017 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 33.6 MB. Free memory was 18.4 MB in the beginning and 18.4 MB in the end (delta: 40.3 kB). Peak memory consumption was 40.3 kB. Max. memory is 14.3 GB. * CACSL2BoogieTranslator took 548.40 ms. Allocated memory was 34.6 MB in the beginning and 42.5 MB in the end (delta: 7.9 MB). Free memory was 10.5 MB in the beginning and 19.3 MB in the end (delta: -8.8 MB). Peak memory consumption was 7.3 MB. Max. memory is 14.3 GB. * Boogie Procedure Inliner took 62.93 ms. Allocated memory is still 42.5 MB. Free memory was 19.3 MB in the beginning and 16.7 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 14.3 GB. * Boogie Preprocessor took 68.03 ms. Allocated memory was 42.5 MB in the beginning and 41.9 MB in the end (delta: -524.3 kB). Free memory was 16.7 MB in the beginning and 24.7 MB in the end (delta: -8.1 MB). Peak memory consumption was 5.7 MB. Max. memory is 14.3 GB. * RCFGBuilder took 19033.37 ms. Allocated memory was 41.9 MB in the beginning and 46.1 MB in the end (delta: 4.2 MB). Free memory was 24.7 MB in the beginning and 28.0 MB in the end (delta: -3.2 MB). Peak memory consumption was 22.6 MB. Max. memory is 14.3 GB. * TraceAbstraction took 37346.64 ms. Allocated memory was 46.1 MB in the beginning and 56.6 MB in the end (delta: 10.5 MB). Free memory was 27.6 MB in the beginning and 34.3 MB in the end (delta: -6.6 MB). Peak memory consumption was 3.8 MB. Max. memory is 14.3 GB. * Witness Printer took 4.74 ms. Allocated memory is still 56.6 MB. Free memory was 34.3 MB in the beginning and 33.7 MB in the end (delta: 630.0 kB). Peak memory consumption was 630.0 kB. Max. memory is 14.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 3]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: unable to decide satisfiability of path constraint. Possible FailurePath: [L39-L44] static const double atanhi_atan[] = { 4.63647609000806093515e-01, 7.85398163397448278999e-01, 9.82793723247329054082e-01, 1.57079632679489655800e+00, }; [L46-L51] static const double atanlo_atan[] = { 2.26987774529616870924e-17, 3.06161699786838301793e-17, 1.39033110312309984516e-17, 6.12323399573676603587e-17, }; [L53-L60] static const double aT_atan[] = { 3.33333333333329318027e-01, -1.99999999998764832476e-01, 1.42857142725034663711e-01, -1.11111104054623557880e-01, 9.09088713343650656196e-02, -7.69187620504482999495e-02, 6.66107313738753120669e-02, -5.83357013379057348645e-02, 4.97687799461593236017e-02, -3.65315727442169155270e-02, 1.62858201153657823623e-02, }; [L62-L64] static const double one_atan = 1.0, pi_o_4 = 7.8539816339744827900E-01, pi_o_2 = 1.5707963267948965580E+00, pi = 3.1415926535897931160E+00, huge_atan = 1.0e300; [L156] double x = -0.0; [L67] double w, s1, s2, z; [L68] __int32_t ix, hx, id; [L71] ieee_double_shape_type gh_u; [L72] gh_u.value = (x) [L73] EXPR gh_u.parts.msw [L73] (hx) = gh_u.parts.msw [L75] ix = hx & 0x7fffffff [L76] COND FALSE !(ix >= 0x44100000) [L90] COND TRUE ix < 0x3fdc0000 [L91] COND TRUE ix < 0x3e200000 [L92] COND TRUE huge_atan + x > one_atan [L93] return x; [L157] double res = atan_double(x); [L160] EXPR res == -0.0 && __signbit_double(res) == 1 [L137] __uint32_t msw; [L140] ieee_double_shape_type gh_u; [L141] gh_u.value = (x) [L142] EXPR gh_u.parts.msw [L142] (msw) = gh_u.parts.msw [L145] return (msw & 0x80000000) != 0; [L160] EXPR res == -0.0 && __signbit_double(res) == 1 [L160] COND TRUE !(res == -0.0 && __signbit_double(res) == 1) [L3] __assert_fail("0", "double_req_bl_0620a.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 40 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNKNOWN, OverallTime: 37.2s, OverallIterations: 5, TraceHistogramMax: 1, AutomataDifference: 23.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 105 SDtfs, 147 SDslu, 131 SDs, 0 SdLazy, 43 SolverSat, 4 SolverUnsat, 7 SolverUnknown, 0 SolverNotchecked, 20.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 102 GetRequests, 81 SyntacticMatches, 2 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 1.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=40occurred 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, 4 MinimizatonAttempts, 16 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 5.5s SatisfiabilityAnalysisTime, 2.2s InterpolantComputationTime, 53 NumberOfCodeBlocks, 53 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 98 ConstructedInterpolants, 4 QuantifiedInterpolants, 5369 SizeOfPredicates, 17 NumberOfNonLiveVariables, 488 ConjunctsInSsa, 23 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 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 [MP z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forcibly destroying the process Received shutdown request...