./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/float-newlib/double_req_bl_1250.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e1a00cf Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/float-newlib/double_req_bl_1250.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 216b013ad4da4eb5e85a87de58b407e30252b4c5 ....................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/float-newlib/double_req_bl_1250.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 216b013ad4da4eb5e85a87de58b407e30252b4c5 ...................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-0e1a00c [2020-11-29 14:20:48,195 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-29 14:20:48,198 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-29 14:20:48,233 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-29 14:20:48,234 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-29 14:20:48,235 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-29 14:20:48,237 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-29 14:20:48,242 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-29 14:20:48,245 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-29 14:20:48,246 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-29 14:20:48,247 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-29 14:20:48,248 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-29 14:20:48,249 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-29 14:20:48,250 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-29 14:20:48,251 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-29 14:20:48,253 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-29 14:20:48,254 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-29 14:20:48,255 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-29 14:20:48,257 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-29 14:20:48,260 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-29 14:20:48,262 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-29 14:20:48,263 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-29 14:20:48,265 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-29 14:20:48,266 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-29 14:20:48,269 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-29 14:20:48,270 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-29 14:20:48,270 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-29 14:20:48,271 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-29 14:20:48,272 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-29 14:20:48,273 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-29 14:20:48,273 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-29 14:20:48,274 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-29 14:20:48,275 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-29 14:20:48,276 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-29 14:20:48,277 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-29 14:20:48,277 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-29 14:20:48,278 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-29 14:20:48,278 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-29 14:20:48,279 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-29 14:20:48,280 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-29 14:20:48,280 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-29 14:20:48,281 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-29 14:20:48,326 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-29 14:20:48,327 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-29 14:20:48,329 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-29 14:20:48,330 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-29 14:20:48,331 INFO L138 SettingsManager]: * Use SBE=true [2020-11-29 14:20:48,331 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-29 14:20:48,331 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-29 14:20:48,332 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-29 14:20:48,332 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-29 14:20:48,332 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-29 14:20:48,333 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-29 14:20:48,333 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-29 14:20:48,334 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-29 14:20:48,334 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-29 14:20:48,334 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-29 14:20:48,335 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-29 14:20:48,335 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-29 14:20:48,335 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-29 14:20:48,335 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-29 14:20:48,336 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-29 14:20:48,336 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-29 14:20:48,336 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-29 14:20:48,336 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-29 14:20:48,337 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-29 14:20:48,337 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-29 14:20:48,337 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-29 14:20:48,338 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-29 14:20:48,338 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-29 14:20:48,338 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-29 14:20:48,338 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 216b013ad4da4eb5e85a87de58b407e30252b4c5 [2020-11-29 14:20:48,745 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-29 14:20:48,787 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-29 14:20:48,792 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-29 14:20:48,794 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-29 14:20:48,795 INFO L275 PluginConnector]: CDTParser initialized [2020-11-29 14:20:48,796 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1250.c [2020-11-29 14:20:48,877 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d801a26ce/7c0b65bf10904f5e8658d20736441108/FLAGf1d9329ae [2020-11-29 14:20:49,451 INFO L306 CDTParser]: Found 1 translation units. [2020-11-29 14:20:49,452 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/double_req_bl_1250.c [2020-11-29 14:20:49,459 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d801a26ce/7c0b65bf10904f5e8658d20736441108/FLAGf1d9329ae [2020-11-29 14:20:49,813 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d801a26ce/7c0b65bf10904f5e8658d20736441108 [2020-11-29 14:20:49,824 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-29 14:20:49,831 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-29 14:20:49,833 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-29 14:20:49,834 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-29 14:20:49,838 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-29 14:20:49,857 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 02:20:49" (1/1) ... [2020-11-29 14:20:49,868 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2177a57a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:20:49, skipping insertion in model container [2020-11-29 14:20:49,868 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 02:20:49" (1/1) ... [2020-11-29 14:20:49,884 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-29 14:20:49,934 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-29 14:20:50,109 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 14:20:50,126 INFO L203 MainTranslator]: Completed pre-run [2020-11-29 14:20:50,183 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 14:20:50,209 INFO L208 MainTranslator]: Completed translation [2020-11-29 14:20:50,210 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:20:50 WrapperNode [2020-11-29 14:20:50,211 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-29 14:20:50,214 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-29 14:20:50,214 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-29 14:20:50,214 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-29 14:20:50,223 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:20:50" (1/1) ... [2020-11-29 14:20:50,249 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:20:50" (1/1) ... [2020-11-29 14:20:50,299 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-29 14:20:50,300 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-29 14:20:50,301 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-29 14:20:50,301 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-29 14:20:50,312 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:20:50" (1/1) ... [2020-11-29 14:20:50,313 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:20:50" (1/1) ... [2020-11-29 14:20:50,323 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:20:50" (1/1) ... [2020-11-29 14:20:50,324 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:20:50" (1/1) ... [2020-11-29 14:20:50,348 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:20:50" (1/1) ... [2020-11-29 14:20:50,360 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:20:50" (1/1) ... [2020-11-29 14:20:50,364 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:20:50" (1/1) ... [2020-11-29 14:20:50,375 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-29 14:20:50,378 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-29 14:20:50,380 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-29 14:20:50,380 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-29 14:20:50,381 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:20:50" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-29 14:20:50,486 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-29 14:20:50,486 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-29 14:20:50,487 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-11-29 14:20:50,488 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-29 14:20:50,488 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-29 14:20:50,489 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-29 14:20:50,489 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-29 14:20:51,041 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-29 14:20:51,041 INFO L298 CfgBuilder]: Removed 18 assume(true) statements. [2020-11-29 14:20:51,043 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 02:20:51 BoogieIcfgContainer [2020-11-29 14:20:51,043 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-29 14:20:51,045 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-29 14:20:51,045 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-29 14:20:51,049 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-29 14:20:51,049 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 02:20:49" (1/3) ... [2020-11-29 14:20:51,050 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2548785 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 02:20:51, skipping insertion in model container [2020-11-29 14:20:51,051 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:20:50" (2/3) ... [2020-11-29 14:20:51,051 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2548785 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 02:20:51, skipping insertion in model container [2020-11-29 14:20:51,051 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 02:20:51" (3/3) ... [2020-11-29 14:20:51,053 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1250.c [2020-11-29 14:20:51,068 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-29 14:20:51,073 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-29 14:20:51,086 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-29 14:20:51,114 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-29 14:20:51,114 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-29 14:20:51,114 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-29 14:20:51,114 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-29 14:20:51,115 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-29 14:20:51,115 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-29 14:20:51,115 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-29 14:20:51,115 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-29 14:20:51,130 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states. [2020-11-29 14:20:51,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-29 14:20:51,136 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 14:20:51,137 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 14:20:51,137 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 14:20:51,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 14:20:51,148 INFO L82 PathProgramCache]: Analyzing trace with hash -958093107, now seen corresponding path program 1 times [2020-11-29 14:20:51,158 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 14:20:51,160 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1424118795] [2020-11-29 14:20:51,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 14:20:51,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 14:20:51,303 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 14:20:51,304 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1424118795] [2020-11-29 14:20:51,304 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 14:20:51,305 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-29 14:20:51,306 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2039547009] [2020-11-29 14:20:51,316 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-29 14:20:51,317 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 14:20:51,331 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-29 14:20:51,332 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-29 14:20:51,334 INFO L87 Difference]: Start difference. First operand 29 states. Second operand 2 states. [2020-11-29 14:20:51,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 14:20:51,354 INFO L93 Difference]: Finished difference Result 55 states and 85 transitions. [2020-11-29 14:20:51,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-29 14:20:51,356 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2020-11-29 14:20:51,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 14:20:51,367 INFO L225 Difference]: With dead ends: 55 [2020-11-29 14:20:51,367 INFO L226 Difference]: Without dead ends: 25 [2020-11-29 14:20:51,370 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-29 14:20:51,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2020-11-29 14:20:51,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2020-11-29 14:20:51,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2020-11-29 14:20:51,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 35 transitions. [2020-11-29 14:20:51,409 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 35 transitions. Word has length 10 [2020-11-29 14:20:51,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 14:20:51,409 INFO L481 AbstractCegarLoop]: Abstraction has 25 states and 35 transitions. [2020-11-29 14:20:51,410 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-29 14:20:51,410 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 35 transitions. [2020-11-29 14:20:51,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-29 14:20:51,411 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 14:20:51,411 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 14:20:51,411 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-29 14:20:51,412 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 14:20:51,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 14:20:51,413 INFO L82 PathProgramCache]: Analyzing trace with hash 1001566992, now seen corresponding path program 1 times [2020-11-29 14:20:51,413 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 14:20:51,414 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [602317789] [2020-11-29 14:20:51,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 14:20:51,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 14:20:51,560 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 14:20:51,561 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [602317789] [2020-11-29 14:20:51,561 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 14:20:51,562 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 14:20:51,562 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [61525316] [2020-11-29 14:20:51,565 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 14:20:51,567 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 14:20:51,568 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 14:20:51,570 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 14:20:51,570 INFO L87 Difference]: Start difference. First operand 25 states and 35 transitions. Second operand 4 states. [2020-11-29 14:20:51,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 14:20:51,666 INFO L93 Difference]: Finished difference Result 41 states and 52 transitions. [2020-11-29 14:20:51,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 14:20:51,667 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-11-29 14:20:51,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 14:20:51,669 INFO L225 Difference]: With dead ends: 41 [2020-11-29 14:20:51,669 INFO L226 Difference]: Without dead ends: 36 [2020-11-29 14:20:51,670 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-29 14:20:51,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-11-29 14:20:51,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 27. [2020-11-29 14:20:51,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-11-29 14:20:51,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 37 transitions. [2020-11-29 14:20:51,686 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 37 transitions. Word has length 11 [2020-11-29 14:20:51,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 14:20:51,687 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 37 transitions. [2020-11-29 14:20:51,687 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 14:20:51,687 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 37 transitions. [2020-11-29 14:20:51,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-29 14:20:51,689 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 14:20:51,691 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 14:20:51,692 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-29 14:20:51,692 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 14:20:51,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 14:20:51,695 INFO L82 PathProgramCache]: Analyzing trace with hash 502183504, now seen corresponding path program 1 times [2020-11-29 14:20:51,696 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 14:20:51,696 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1838635668] [2020-11-29 14:20:51,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 14:20:51,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 14:20:51,817 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 14:20:51,817 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1838635668] [2020-11-29 14:20:51,818 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 14:20:51,818 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 14:20:51,818 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [322094946] [2020-11-29 14:20:51,819 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 14:20:51,821 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 14:20:51,822 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 14:20:51,822 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 14:20:51,823 INFO L87 Difference]: Start difference. First operand 27 states and 37 transitions. Second operand 4 states. [2020-11-29 14:20:51,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 14:20:51,912 INFO L93 Difference]: Finished difference Result 43 states and 54 transitions. [2020-11-29 14:20:51,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 14:20:51,913 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-11-29 14:20:51,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 14:20:51,915 INFO L225 Difference]: With dead ends: 43 [2020-11-29 14:20:51,915 INFO L226 Difference]: Without dead ends: 38 [2020-11-29 14:20:51,916 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-29 14:20:51,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-11-29 14:20:51,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 27. [2020-11-29 14:20:51,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-11-29 14:20:51,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 37 transitions. [2020-11-29 14:20:51,922 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 37 transitions. Word has length 12 [2020-11-29 14:20:51,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 14:20:51,923 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 37 transitions. [2020-11-29 14:20:51,923 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 14:20:51,923 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 37 transitions. [2020-11-29 14:20:51,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-11-29 14:20:51,924 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 14:20:51,924 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 14:20:51,925 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-29 14:20:51,925 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 14:20:51,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 14:20:51,926 INFO L82 PathProgramCache]: Analyzing trace with hash -1951251627, now seen corresponding path program 1 times [2020-11-29 14:20:51,926 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 14:20:51,927 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2056565467] [2020-11-29 14:20:51,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 14:20:51,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 14:20:51,974 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 14:20:51,975 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2056565467] [2020-11-29 14:20:51,975 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 14:20:51,975 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 14:20:51,975 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [822572739] [2020-11-29 14:20:51,976 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 14:20:51,976 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 14:20:51,977 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 14:20:51,978 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 14:20:51,978 INFO L87 Difference]: Start difference. First operand 27 states and 37 transitions. Second operand 4 states. [2020-11-29 14:20:52,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 14:20:52,033 INFO L93 Difference]: Finished difference Result 45 states and 56 transitions. [2020-11-29 14:20:52,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 14:20:52,034 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-11-29 14:20:52,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 14:20:52,036 INFO L225 Difference]: With dead ends: 45 [2020-11-29 14:20:52,036 INFO L226 Difference]: Without dead ends: 40 [2020-11-29 14:20:52,036 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-29 14:20:52,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-11-29 14:20:52,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 27. [2020-11-29 14:20:52,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-11-29 14:20:52,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 37 transitions. [2020-11-29 14:20:52,042 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 37 transitions. Word has length 13 [2020-11-29 14:20:52,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 14:20:52,042 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 37 transitions. [2020-11-29 14:20:52,042 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 14:20:52,043 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 37 transitions. [2020-11-29 14:20:52,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-11-29 14:20:52,043 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 14:20:52,044 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 14:20:52,044 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-29 14:20:52,044 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 14:20:52,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 14:20:52,045 INFO L82 PathProgramCache]: Analyzing trace with hash -555778251, now seen corresponding path program 1 times [2020-11-29 14:20:52,045 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 14:20:52,046 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1653723122] [2020-11-29 14:20:52,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 14:20:52,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 14:20:52,102 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 14:20:52,103 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1653723122] [2020-11-29 14:20:52,103 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 14:20:52,103 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 14:20:52,103 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [479163614] [2020-11-29 14:20:52,104 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 14:20:52,104 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 14:20:52,105 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 14:20:52,105 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 14:20:52,106 INFO L87 Difference]: Start difference. First operand 27 states and 37 transitions. Second operand 4 states. [2020-11-29 14:20:52,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 14:20:52,151 INFO L93 Difference]: Finished difference Result 43 states and 54 transitions. [2020-11-29 14:20:52,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 14:20:52,152 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2020-11-29 14:20:52,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 14:20:52,153 INFO L225 Difference]: With dead ends: 43 [2020-11-29 14:20:52,154 INFO L226 Difference]: Without dead ends: 38 [2020-11-29 14:20:52,154 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-29 14:20:52,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-11-29 14:20:52,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 27. [2020-11-29 14:20:52,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-11-29 14:20:52,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 37 transitions. [2020-11-29 14:20:52,160 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 37 transitions. Word has length 14 [2020-11-29 14:20:52,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 14:20:52,160 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 37 transitions. [2020-11-29 14:20:52,160 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 14:20:52,160 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 37 transitions. [2020-11-29 14:20:52,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-11-29 14:20:52,161 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 14:20:52,161 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 14:20:52,162 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-29 14:20:52,162 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 14:20:52,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 14:20:52,163 INFO L82 PathProgramCache]: Analyzing trace with hash 1219229111, now seen corresponding path program 1 times [2020-11-29 14:20:52,163 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 14:20:52,163 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1755256301] [2020-11-29 14:20:52,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 14:20:52,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 14:20:52,191 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 14:20:52,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 14:20:52,212 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 14:20:52,238 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 14:20:52,238 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-29 14:20:52,239 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-29 14:20:52,270 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.11 02:20:52 BoogieIcfgContainer [2020-11-29 14:20:52,270 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-29 14:20:52,271 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-29 14:20:52,271 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-29 14:20:52,272 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-29 14:20:52,272 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 02:20:51" (3/4) ... [2020-11-29 14:20:52,276 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-11-29 14:20:52,276 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-29 14:20:52,279 INFO L168 Benchmark]: Toolchain (without parser) took 2450.97 ms. Allocated memory was 44.0 MB in the beginning and 69.2 MB in the end (delta: 25.2 MB). Free memory was 20.3 MB in the beginning and 29.2 MB in the end (delta: -8.9 MB). Peak memory consumption was 18.8 MB. Max. memory is 16.1 GB. [2020-11-29 14:20:52,280 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 44.0 MB. Free memory was 29.2 MB in the beginning and 29.2 MB in the end (delta: 20.5 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 14:20:52,281 INFO L168 Benchmark]: CACSL2BoogieTranslator took 378.41 ms. Allocated memory was 44.0 MB in the beginning and 56.6 MB in the end (delta: 12.6 MB). Free memory was 19.6 MB in the beginning and 31.0 MB in the end (delta: -11.4 MB). Peak memory consumption was 3.5 MB. Max. memory is 16.1 GB. [2020-11-29 14:20:52,282 INFO L168 Benchmark]: Boogie Procedure Inliner took 85.64 ms. Allocated memory is still 56.6 MB. Free memory was 31.0 MB in the beginning and 29.2 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 14:20:52,283 INFO L168 Benchmark]: Boogie Preprocessor took 76.60 ms. Allocated memory is still 56.6 MB. Free memory was 29.2 MB in the beginning and 27.8 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 14:20:52,283 INFO L168 Benchmark]: RCFGBuilder took 665.51 ms. Allocated memory is still 56.6 MB. Free memory was 27.7 MB in the beginning and 36.2 MB in the end (delta: -8.6 MB). Peak memory consumption was 6.1 MB. Max. memory is 16.1 GB. [2020-11-29 14:20:52,284 INFO L168 Benchmark]: TraceAbstraction took 1225.64 ms. Allocated memory was 56.6 MB in the beginning and 69.2 MB in the end (delta: 12.6 MB). Free memory was 35.8 MB in the beginning and 29.6 MB in the end (delta: 6.2 MB). Peak memory consumption was 19.7 MB. Max. memory is 16.1 GB. [2020-11-29 14:20:52,285 INFO L168 Benchmark]: Witness Printer took 5.07 ms. Allocated memory is still 69.2 MB. Free memory was 29.6 MB in the beginning and 29.2 MB in the end (delta: 426.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 14:20:52,290 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 44.0 MB. Free memory was 29.2 MB in the beginning and 29.2 MB in the end (delta: 20.5 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 378.41 ms. Allocated memory was 44.0 MB in the beginning and 56.6 MB in the end (delta: 12.6 MB). Free memory was 19.6 MB in the beginning and 31.0 MB in the end (delta: -11.4 MB). Peak memory consumption was 3.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 85.64 ms. Allocated memory is still 56.6 MB. Free memory was 31.0 MB in the beginning and 29.2 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 76.60 ms. Allocated memory is still 56.6 MB. Free memory was 29.2 MB in the beginning and 27.8 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 665.51 ms. Allocated memory is still 56.6 MB. Free memory was 27.7 MB in the beginning and 36.2 MB in the end (delta: -8.6 MB). Peak memory consumption was 6.1 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1225.64 ms. Allocated memory was 56.6 MB in the beginning and 69.2 MB in the end (delta: 12.6 MB). Free memory was 35.8 MB in the beginning and 29.6 MB in the end (delta: 6.2 MB). Peak memory consumption was 19.7 MB. Max. memory is 16.1 GB. * Witness Printer took 5.07 ms. Allocated memory is still 69.2 MB. Free memory was 29.6 MB in the beginning and 29.2 MB in the end (delta: 426.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 3]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 18, overapproximation of someBinaryArithmeticDOUBLEoperation at line 69. Possible FailurePath: [L69] double x = 0.0 / 0.0; [L70] double y = 0.0 / 0.0; [L29] __uint32_t msw, lsw; [L32] ieee_double_shape_type ew_u; [L33] ew_u.value = (x) [L34] EXPR ew_u.parts.msw [L34] (msw) = ew_u.parts.msw [L35] EXPR ew_u.parts.lsw [L35] (lsw) = ew_u.parts.lsw [L38-L39] COND FALSE !((msw == 0x00000000 && lsw == 0x00000000) || (msw == 0x80000000 && lsw == 0x00000000)) [L41-L42] COND FALSE !((msw >= 0x00100000 && msw <= 0x7fefffff) || (msw >= 0x80100000 && msw <= 0xffefffff)) [L44-L45] COND FALSE !(( msw <= 0x000fffff) || (msw >= 0x80000000 && msw <= 0x800fffff)) [L48-L49] COND FALSE !((msw == 0x7ff00000 && lsw == 0x00000000) || (msw == 0xfff00000 && lsw == 0x00000000)) [L52] return 0; [L57] COND TRUE __fpclassify_double(x) == 0 [L58] return y; [L71] double res = fmax_double(x, y); [L18] return x != x; [L73] COND TRUE !isnan_double(res) [L3] __assert_fail("0", "double_req_bl_1250.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 29 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.1s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 206 SDtfs, 44 SDslu, 238 SDs, 0 SdLazy, 84 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 22 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=29occurred 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, 5 MinimizatonAttempts, 44 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 74 NumberOfCodeBlocks, 74 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 55 ConstructedInterpolants, 0 QuantifiedInterpolants, 799 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.0-0e1a00c [2020-11-29 14:20:54,780 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-29 14:20:54,783 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-29 14:20:54,815 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-29 14:20:54,816 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-29 14:20:54,817 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-29 14:20:54,819 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-29 14:20:54,821 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-29 14:20:54,823 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-29 14:20:54,824 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-29 14:20:54,826 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-29 14:20:54,827 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-29 14:20:54,828 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-29 14:20:54,829 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-29 14:20:54,830 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-29 14:20:54,831 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-29 14:20:54,832 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-29 14:20:54,834 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-29 14:20:54,836 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-29 14:20:54,838 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-29 14:20:54,840 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-29 14:20:54,841 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-29 14:20:54,843 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-29 14:20:54,844 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-29 14:20:54,847 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-29 14:20:54,847 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-29 14:20:54,848 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-29 14:20:54,849 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-29 14:20:54,850 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-29 14:20:54,851 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-29 14:20:54,851 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-29 14:20:54,852 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-29 14:20:54,853 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-29 14:20:54,854 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-29 14:20:54,856 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-29 14:20:54,856 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-29 14:20:54,857 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-29 14:20:54,858 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-29 14:20:54,858 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-29 14:20:54,859 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-29 14:20:54,860 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-29 14:20:54,863 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2020-11-29 14:20:54,916 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-29 14:20:54,917 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-29 14:20:54,918 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-29 14:20:54,920 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-29 14:20:54,920 INFO L138 SettingsManager]: * Use SBE=true [2020-11-29 14:20:54,920 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-29 14:20:54,921 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-29 14:20:54,921 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-29 14:20:54,921 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-29 14:20:54,921 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-29 14:20:54,921 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-29 14:20:54,922 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-29 14:20:54,922 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-11-29 14:20:54,922 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-11-29 14:20:54,922 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-29 14:20:54,922 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-29 14:20:54,922 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-29 14:20:54,923 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-29 14:20:54,924 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-29 14:20:54,924 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-29 14:20:54,924 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-29 14:20:54,925 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-29 14:20:54,925 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-29 14:20:54,925 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-29 14:20:54,925 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-29 14:20:54,925 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-29 14:20:54,925 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2020-11-29 14:20:54,926 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-11-29 14:20:54,926 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-29 14:20:54,926 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-29 14:20:54,926 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-29 14:20:54,926 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 216b013ad4da4eb5e85a87de58b407e30252b4c5 [2020-11-29 14:20:55,396 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-29 14:20:55,438 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-29 14:20:55,443 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-29 14:20:55,445 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-29 14:20:55,446 INFO L275 PluginConnector]: CDTParser initialized [2020-11-29 14:20:55,447 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1250.c [2020-11-29 14:20:55,520 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/13242a74a/3e7527e5fcfb4d6fb30fcc3d0770caf8/FLAGbecacc46f [2020-11-29 14:20:56,194 INFO L306 CDTParser]: Found 1 translation units. [2020-11-29 14:20:56,195 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/double_req_bl_1250.c [2020-11-29 14:20:56,203 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/13242a74a/3e7527e5fcfb4d6fb30fcc3d0770caf8/FLAGbecacc46f [2020-11-29 14:20:56,575 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/13242a74a/3e7527e5fcfb4d6fb30fcc3d0770caf8 [2020-11-29 14:20:56,578 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-29 14:20:56,587 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-29 14:20:56,589 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-29 14:20:56,589 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-29 14:20:56,594 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-29 14:20:56,607 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 02:20:56" (1/1) ... [2020-11-29 14:20:56,614 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@49c330de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:20:56, skipping insertion in model container [2020-11-29 14:20:56,615 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 02:20:56" (1/1) ... [2020-11-29 14:20:56,626 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-29 14:20:56,661 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-29 14:20:56,891 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 14:20:56,905 INFO L203 MainTranslator]: Completed pre-run [2020-11-29 14:20:56,933 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 14:20:56,962 INFO L208 MainTranslator]: Completed translation [2020-11-29 14:20:56,963 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:20:56 WrapperNode [2020-11-29 14:20:56,963 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-29 14:20:56,965 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-29 14:20:56,965 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-29 14:20:56,967 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-29 14:20:56,976 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:20:56" (1/1) ... [2020-11-29 14:20:57,008 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:20:56" (1/1) ... [2020-11-29 14:20:57,050 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-29 14:20:57,052 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-29 14:20:57,053 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-29 14:20:57,053 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-29 14:20:57,076 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:20:56" (1/1) ... [2020-11-29 14:20:57,076 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:20:56" (1/1) ... [2020-11-29 14:20:57,081 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:20:56" (1/1) ... [2020-11-29 14:20:57,081 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:20:56" (1/1) ... [2020-11-29 14:20:57,091 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:20:56" (1/1) ... [2020-11-29 14:20:57,097 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:20:56" (1/1) ... [2020-11-29 14:20:57,100 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:20:56" (1/1) ... [2020-11-29 14:20:57,104 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-29 14:20:57,105 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-29 14:20:57,105 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-29 14:20:57,106 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-29 14:20:57,107 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:20:56" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-29 14:20:57,199 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2020-11-29 14:20:57,200 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-11-29 14:20:57,200 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-29 14:20:57,200 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2020-11-29 14:20:57,201 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-29 14:20:57,201 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-29 14:20:57,201 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-29 14:20:57,735 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-29 14:20:57,735 INFO L298 CfgBuilder]: Removed 18 assume(true) statements. [2020-11-29 14:20:57,737 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 02:20:57 BoogieIcfgContainer [2020-11-29 14:20:57,737 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-29 14:20:57,739 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-29 14:20:57,740 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-29 14:20:57,743 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-29 14:20:57,744 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 02:20:56" (1/3) ... [2020-11-29 14:20:57,745 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7470ee3f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 02:20:57, skipping insertion in model container [2020-11-29 14:20:57,745 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:20:56" (2/3) ... [2020-11-29 14:20:57,746 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7470ee3f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 02:20:57, skipping insertion in model container [2020-11-29 14:20:57,746 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 02:20:57" (3/3) ... [2020-11-29 14:20:57,748 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1250.c [2020-11-29 14:20:57,765 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-29 14:20:57,770 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-29 14:20:57,782 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-29 14:20:57,814 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-29 14:20:57,814 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-29 14:20:57,814 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-29 14:20:57,815 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-29 14:20:57,815 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-29 14:20:57,815 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-29 14:20:57,815 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-29 14:20:57,816 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-29 14:20:57,830 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states. [2020-11-29 14:20:57,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-29 14:20:57,837 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 14:20:57,838 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 14:20:57,838 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 14:20:57,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 14:20:57,846 INFO L82 PathProgramCache]: Analyzing trace with hash -958093107, now seen corresponding path program 1 times [2020-11-29 14:20:57,861 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-29 14:20:57,862 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1271343965] [2020-11-29 14:20:57,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2020-11-29 14:20:58,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 14:20:58,039 INFO L263 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 1 conjunts are in the unsatisfiable core [2020-11-29 14:20:58,044 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 14:20:58,081 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 14:20:58,082 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-29 14:20:58,102 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 14:20:58,104 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1271343965] [2020-11-29 14:20:58,105 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-29 14:20:58,105 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-11-29 14:20:58,106 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1149809810] [2020-11-29 14:20:58,111 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-29 14:20:58,111 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-29 14:20:58,127 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-29 14:20:58,128 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-29 14:20:58,131 INFO L87 Difference]: Start difference. First operand 29 states. Second operand 2 states. [2020-11-29 14:20:58,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 14:20:58,152 INFO L93 Difference]: Finished difference Result 55 states and 85 transitions. [2020-11-29 14:20:58,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-29 14:20:58,154 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2020-11-29 14:20:58,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 14:20:58,164 INFO L225 Difference]: With dead ends: 55 [2020-11-29 14:20:58,164 INFO L226 Difference]: Without dead ends: 25 [2020-11-29 14:20:58,167 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-29 14:20:58,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2020-11-29 14:20:58,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2020-11-29 14:20:58,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2020-11-29 14:20:58,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 35 transitions. [2020-11-29 14:20:58,204 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 35 transitions. Word has length 10 [2020-11-29 14:20:58,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 14:20:58,205 INFO L481 AbstractCegarLoop]: Abstraction has 25 states and 35 transitions. [2020-11-29 14:20:58,205 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-29 14:20:58,205 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 35 transitions. [2020-11-29 14:20:58,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-29 14:20:58,206 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 14:20:58,206 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 14:20:58,417 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-11-29 14:20:58,418 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 14:20:58,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 14:20:58,421 INFO L82 PathProgramCache]: Analyzing trace with hash 1001566992, now seen corresponding path program 1 times [2020-11-29 14:20:58,422 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-29 14:20:58,422 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1557691015] [2020-11-29 14:20:58,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2020-11-29 14:20:58,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 14:20:58,552 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 3 conjunts are in the unsatisfiable core [2020-11-29 14:20:58,553 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 14:20:58,594 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 14:20:58,595 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-29 14:20:58,621 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 14:20:58,621 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1557691015] [2020-11-29 14:20:58,622 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-29 14:20:58,622 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2020-11-29 14:20:58,622 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1188451036] [2020-11-29 14:20:58,624 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-29 14:20:58,624 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-29 14:20:58,625 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-29 14:20:58,625 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-29 14:20:58,626 INFO L87 Difference]: Start difference. First operand 25 states and 35 transitions. Second operand 6 states. [2020-11-29 14:20:58,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 14:20:58,991 INFO L93 Difference]: Finished difference Result 52 states and 65 transitions. [2020-11-29 14:20:58,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-29 14:20:58,991 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 11 [2020-11-29 14:20:58,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 14:20:58,993 INFO L225 Difference]: With dead ends: 52 [2020-11-29 14:20:58,996 INFO L226 Difference]: Without dead ends: 47 [2020-11-29 14:20:58,997 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-11-29 14:20:58,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-11-29 14:20:59,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 27. [2020-11-29 14:20:59,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-11-29 14:20:59,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 37 transitions. [2020-11-29 14:20:59,012 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 37 transitions. Word has length 11 [2020-11-29 14:20:59,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 14:20:59,013 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 37 transitions. [2020-11-29 14:20:59,013 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-29 14:20:59,013 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 37 transitions. [2020-11-29 14:20:59,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-11-29 14:20:59,014 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 14:20:59,019 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 14:20:59,223 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-11-29 14:20:59,224 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 14:20:59,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 14:20:59,226 INFO L82 PathProgramCache]: Analyzing trace with hash 1219229111, now seen corresponding path program 1 times [2020-11-29 14:20:59,227 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-29 14:20:59,227 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [466827729] [2020-11-29 14:20:59,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 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 [2020-11-29 14:20:59,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 14:20:59,352 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 10 conjunts are in the unsatisfiable core [2020-11-29 14:20:59,356 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 14:20:59,506 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 14:20:59,506 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-29 14:20:59,627 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 14:20:59,627 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [466827729] [2020-11-29 14:20:59,628 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-29 14:20:59,628 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 10 [2020-11-29 14:20:59,628 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [213549304] [2020-11-29 14:20:59,629 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-11-29 14:20:59,629 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-29 14:20:59,630 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-11-29 14:20:59,630 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-11-29 14:20:59,631 INFO L87 Difference]: Start difference. First operand 27 states and 37 transitions. Second operand 10 states. [2020-11-29 14:21:00,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 14:21:00,006 INFO L93 Difference]: Finished difference Result 36 states and 45 transitions. [2020-11-29 14:21:00,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-29 14:21:00,007 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 14 [2020-11-29 14:21:00,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 14:21:00,008 INFO L225 Difference]: With dead ends: 36 [2020-11-29 14:21:00,009 INFO L226 Difference]: Without dead ends: 27 [2020-11-29 14:21:00,009 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 2 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2020-11-29 14:21:00,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2020-11-29 14:21:00,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 25. [2020-11-29 14:21:00,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2020-11-29 14:21:00,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 33 transitions. [2020-11-29 14:21:00,015 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 33 transitions. Word has length 14 [2020-11-29 14:21:00,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 14:21:00,015 INFO L481 AbstractCegarLoop]: Abstraction has 25 states and 33 transitions. [2020-11-29 14:21:00,016 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-11-29 14:21:00,016 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 33 transitions. [2020-11-29 14:21:00,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-11-29 14:21:00,017 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 14:21:00,017 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 14:21:00,233 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-11-29 14:21:00,233 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 14:21:00,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 14:21:00,235 INFO L82 PathProgramCache]: Analyzing trace with hash 1012428811, now seen corresponding path program 1 times [2020-11-29 14:21:00,236 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-29 14:21:00,236 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1600302627] [2020-11-29 14:21:00,236 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 [2020-11-29 14:21:00,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 14:21:00,344 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 3 conjunts are in the unsatisfiable core [2020-11-29 14:21:00,345 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 14:21:00,372 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 14:21:00,375 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-29 14:21:00,413 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 14:21:00,414 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1600302627] [2020-11-29 14:21:00,414 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-29 14:21:00,414 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2020-11-29 14:21:00,414 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1857988472] [2020-11-29 14:21:00,415 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-29 14:21:00,415 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-29 14:21:00,415 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-29 14:21:00,416 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-29 14:21:00,416 INFO L87 Difference]: Start difference. First operand 25 states and 33 transitions. Second operand 6 states. [2020-11-29 14:21:00,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 14:21:00,546 INFO L93 Difference]: Finished difference Result 52 states and 59 transitions. [2020-11-29 14:21:00,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-29 14:21:00,547 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 16 [2020-11-29 14:21:00,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 14:21:00,548 INFO L225 Difference]: With dead ends: 52 [2020-11-29 14:21:00,548 INFO L226 Difference]: Without dead ends: 47 [2020-11-29 14:21:00,549 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-11-29 14:21:00,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-11-29 14:21:00,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 27. [2020-11-29 14:21:00,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-11-29 14:21:00,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 35 transitions. [2020-11-29 14:21:00,555 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 35 transitions. Word has length 16 [2020-11-29 14:21:00,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 14:21:00,555 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 35 transitions. [2020-11-29 14:21:00,555 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-29 14:21:00,555 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 35 transitions. [2020-11-29 14:21:00,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-11-29 14:21:00,556 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 14:21:00,556 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 14:21:00,770 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2020-11-29 14:21:00,771 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 14:21:00,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 14:21:00,772 INFO L82 PathProgramCache]: Analyzing trace with hash -356841937, now seen corresponding path program 1 times [2020-11-29 14:21:00,774 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-29 14:21:00,774 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [788703269] [2020-11-29 14:21:00,774 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 [2020-11-29 14:21:00,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 14:21:00,902 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 11 conjunts are in the unsatisfiable core [2020-11-29 14:21:00,905 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 14:21:01,088 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 14:21:01,089 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-29 14:21:01,267 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 14:21:01,268 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [788703269] [2020-11-29 14:21:01,268 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-29 14:21:01,268 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 12 [2020-11-29 14:21:01,268 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [451665378] [2020-11-29 14:21:01,270 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-11-29 14:21:01,270 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-29 14:21:01,271 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-11-29 14:21:01,272 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2020-11-29 14:21:01,272 INFO L87 Difference]: Start difference. First operand 27 states and 35 transitions. Second operand 12 states. [2020-11-29 14:21:01,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 14:21:01,729 INFO L93 Difference]: Finished difference Result 32 states and 39 transitions. [2020-11-29 14:21:01,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-29 14:21:01,730 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 18 [2020-11-29 14:21:01,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 14:21:01,731 INFO L225 Difference]: With dead ends: 32 [2020-11-29 14:21:01,731 INFO L226 Difference]: Without dead ends: 23 [2020-11-29 14:21:01,731 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 3 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=62, Invalid=178, Unknown=0, NotChecked=0, Total=240 [2020-11-29 14:21:01,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-11-29 14:21:01,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2020-11-29 14:21:01,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-11-29 14:21:01,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 26 transitions. [2020-11-29 14:21:01,735 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 26 transitions. Word has length 18 [2020-11-29 14:21:01,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 14:21:01,736 INFO L481 AbstractCegarLoop]: Abstraction has 23 states and 26 transitions. [2020-11-29 14:21:01,736 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-11-29 14:21:01,736 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 26 transitions. [2020-11-29 14:21:01,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-11-29 14:21:01,737 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 14:21:01,737 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 14:21:01,948 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 mathsat -unsat_core_generation=3 [2020-11-29 14:21:01,949 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 14:21:01,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 14:21:01,950 INFO L82 PathProgramCache]: Analyzing trace with hash -208376157, now seen corresponding path program 1 times [2020-11-29 14:21:01,951 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-29 14:21:01,951 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1978226580] [2020-11-29 14:21:01,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 7 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with mathsat -unsat_core_generation=3 [2020-11-29 14:21:02,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 14:21:02,066 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 10 conjunts are in the unsatisfiable core [2020-11-29 14:21:02,068 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 14:21:02,179 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 14:21:02,180 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-29 14:21:02,292 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 14:21:02,292 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1978226580] [2020-11-29 14:21:02,292 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-29 14:21:02,293 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 10 [2020-11-29 14:21:02,293 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [143419732] [2020-11-29 14:21:02,293 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-11-29 14:21:02,293 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-29 14:21:02,294 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-11-29 14:21:02,294 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-11-29 14:21:02,294 INFO L87 Difference]: Start difference. First operand 23 states and 26 transitions. Second operand 10 states. [2020-11-29 14:21:02,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 14:21:02,537 INFO L93 Difference]: Finished difference Result 23 states and 26 transitions. [2020-11-29 14:21:02,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-29 14:21:02,537 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 19 [2020-11-29 14:21:02,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 14:21:02,538 INFO L225 Difference]: With dead ends: 23 [2020-11-29 14:21:02,538 INFO L226 Difference]: Without dead ends: 0 [2020-11-29 14:21:02,538 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 28 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 2 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2020-11-29 14:21:02,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-29 14:21:02,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-29 14:21:02,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-29 14:21:02,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-29 14:21:02,542 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 19 [2020-11-29 14:21:02,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 14:21:02,542 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-29 14:21:02,542 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-11-29 14:21:02,542 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-29 14:21:02,542 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-29 14:21:02,749 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 mathsat -unsat_core_generation=3 [2020-11-29 14:21:02,753 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-29 14:21:03,021 INFO L262 CegarLoopResult]: For program point L31-1(lines 31 36) no Hoare annotation was computed. [2020-11-29 14:21:03,022 INFO L258 CegarLoopResult]: At program point L31-2(lines 31 36) the Hoare annotation is: (and (not (fp.eq ULTIMATE.start_fmax_double_~y ULTIMATE.start_fmax_double_~y)) (not (fp.eq ULTIMATE.start_fmax_double_~x ULTIMATE.start_fmax_double_~x))) [2020-11-29 14:21:03,022 INFO L262 CegarLoopResult]: For program point L31-3(lines 28 53) no Hoare annotation was computed. [2020-11-29 14:21:03,022 INFO L262 CegarLoopResult]: For program point L31-5(lines 31 36) no Hoare annotation was computed. [2020-11-29 14:21:03,022 INFO L258 CegarLoopResult]: At program point L31-6(lines 31 36) the Hoare annotation is: (and (not (fp.eq ULTIMATE.start_fmax_double_~y ULTIMATE.start_fmax_double_~y)) (not (fp.eq ULTIMATE.start_fmax_double_~x ULTIMATE.start_fmax_double_~x))) [2020-11-29 14:21:03,022 INFO L262 CegarLoopResult]: For program point L31-7(lines 28 53) no Hoare annotation was computed. [2020-11-29 14:21:03,022 INFO L258 CegarLoopResult]: At program point L52(lines 28 53) the Hoare annotation is: (and (not (fp.eq ULTIMATE.start_fmax_double_~x ULTIMATE.start_fmax_double_~x)) (not (fp.eq ULTIMATE.start_fmax_double_~y ULTIMATE.start_fmax_double_~y))) [2020-11-29 14:21:03,023 INFO L258 CegarLoopResult]: At program point L52-1(lines 28 53) the Hoare annotation is: (let ((.cse0 (not (fp.eq ULTIMATE.start_fmax_double_~y ULTIMATE.start_fmax_double_~y)))) (or (and .cse0 (not (fp.eq ULTIMATE.start_fmax_double_~x ULTIMATE.start_fmax_double_~x))) (and .cse0 (not (= (_ bv0 32) |ULTIMATE.start___fpclassify_double_#res|))))) [2020-11-29 14:21:03,023 INFO L262 CegarLoopResult]: For program point L48(lines 48 52) no Hoare annotation was computed. [2020-11-29 14:21:03,023 INFO L262 CegarLoopResult]: For program point L48-1(lines 48 52) no Hoare annotation was computed. [2020-11-29 14:21:03,023 INFO L265 CegarLoopResult]: At program point L77(lines 65 78) the Hoare annotation is: true [2020-11-29 14:21:03,023 INFO L262 CegarLoopResult]: For program point L44(lines 44 52) no Hoare annotation was computed. [2020-11-29 14:21:03,023 INFO L262 CegarLoopResult]: For program point L44-1(lines 44 52) no Hoare annotation was computed. [2020-11-29 14:21:03,023 INFO L262 CegarLoopResult]: For program point L73(lines 73 76) no Hoare annotation was computed. [2020-11-29 14:21:03,023 INFO L262 CegarLoopResult]: For program point L3(line 3) no Hoare annotation was computed. [2020-11-29 14:21:03,024 INFO L262 CegarLoopResult]: For program point L3-1(line 3) no Hoare annotation was computed. [2020-11-29 14:21:03,024 INFO L262 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-11-29 14:21:03,024 INFO L262 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-11-29 14:21:03,024 INFO L262 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-11-29 14:21:03,024 INFO L262 CegarLoopResult]: For program point L57(lines 57 58) no Hoare annotation was computed. [2020-11-29 14:21:03,024 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 3) no Hoare annotation was computed. [2020-11-29 14:21:03,024 INFO L262 CegarLoopResult]: For program point L41(lines 41 52) no Hoare annotation was computed. [2020-11-29 14:21:03,024 INFO L262 CegarLoopResult]: For program point L41-1(lines 41 52) no Hoare annotation was computed. [2020-11-29 14:21:03,025 INFO L262 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-29 14:21:03,025 INFO L262 CegarLoopResult]: For program point L62(line 62) no Hoare annotation was computed. [2020-11-29 14:21:03,025 INFO L262 CegarLoopResult]: For program point L62-2(line 62) no Hoare annotation was computed. [2020-11-29 14:21:03,025 INFO L258 CegarLoopResult]: At program point L62-3(lines 55 63) the Hoare annotation is: (and (exists ((currentRoundingMode RoundingMode)) (= (fp.div currentRoundingMode (_ +zero 11 53) (_ +zero 11 53)) ULTIMATE.start_fmax_double_~y)) (not (fp.eq |ULTIMATE.start_fmax_double_#res| |ULTIMATE.start_fmax_double_#res|))) [2020-11-29 14:21:03,025 INFO L262 CegarLoopResult]: For program point L59(lines 59 60) no Hoare annotation was computed. [2020-11-29 14:21:03,025 INFO L258 CegarLoopResult]: At program point L18(line 18) the Hoare annotation is: (and (exists ((currentRoundingMode RoundingMode)) (= (fp.div currentRoundingMode (_ +zero 11 53) (_ +zero 11 53)) ULTIMATE.start_fmax_double_~y)) (not (fp.eq |ULTIMATE.start_fmax_double_#res| |ULTIMATE.start_fmax_double_#res|)) (= (_ bv1 32) |ULTIMATE.start_isnan_double_#res|)) [2020-11-29 14:21:03,032 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-11-29 14:21:03,040 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-11-29 14:21:03,041 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-11-29 14:21:03,042 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-11-29 14:21:03,045 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.11 02:21:03 BoogieIcfgContainer [2020-11-29 14:21:03,045 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-29 14:21:03,046 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-29 14:21:03,046 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-29 14:21:03,046 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-29 14:21:03,047 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 02:20:57" (3/4) ... [2020-11-29 14:21:03,050 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-29 14:21:03,067 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 15 nodes and edges [2020-11-29 14:21:03,068 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2020-11-29 14:21:03,068 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2020-11-29 14:21:03,069 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-29 14:21:03,099 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~DOUBLE(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == y) && !~fp.eq~DOUBLE(\result, \result) [2020-11-29 14:21:03,100 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~DOUBLE(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == y) && !~fp.eq~DOUBLE(\result, \result)) && 1bv32 == \result [2020-11-29 14:21:03,101 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (!~fp.eq~DOUBLE(y, y) && !~fp.eq~DOUBLE(x, x)) || (!~fp.eq~DOUBLE(y, y) && !(0bv32 == \result)) [2020-11-29 14:21:03,164 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-11-29 14:21:03,164 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-29 14:21:03,169 INFO L168 Benchmark]: Toolchain (without parser) took 6584.68 ms. Allocated memory was 46.1 MB in the beginning and 56.6 MB in the end (delta: 10.5 MB). Free memory was 23.5 MB in the beginning and 26.5 MB in the end (delta: -2.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-29 14:21:03,170 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 46.1 MB. Free memory was 29.2 MB in the beginning and 29.1 MB in the end (delta: 70.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 14:21:03,170 INFO L168 Benchmark]: CACSL2BoogieTranslator took 375.07 ms. Allocated memory is still 46.1 MB. Free memory was 22.9 MB in the beginning and 21.2 MB in the end (delta: 1.7 MB). Peak memory consumption was 3.3 MB. Max. memory is 16.1 GB. [2020-11-29 14:21:03,171 INFO L168 Benchmark]: Boogie Procedure Inliner took 85.92 ms. Allocated memory is still 46.1 MB. Free memory was 21.2 MB in the beginning and 19.4 MB in the end (delta: 1.8 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 14:21:03,171 INFO L168 Benchmark]: Boogie Preprocessor took 51.85 ms. Allocated memory was 46.1 MB in the beginning and 56.6 MB in the end (delta: 10.5 MB). Free memory was 19.4 MB in the beginning and 40.1 MB in the end (delta: -20.7 MB). Peak memory consumption was 7.1 MB. Max. memory is 16.1 GB. [2020-11-29 14:21:03,172 INFO L168 Benchmark]: RCFGBuilder took 632.44 ms. Allocated memory is still 56.6 MB. Free memory was 39.8 MB in the beginning and 33.7 MB in the end (delta: 6.2 MB). Peak memory consumption was 15.9 MB. Max. memory is 16.1 GB. [2020-11-29 14:21:03,173 INFO L168 Benchmark]: TraceAbstraction took 5306.13 ms. Allocated memory is still 56.6 MB. Free memory was 33.4 MB in the beginning and 30.2 MB in the end (delta: 3.2 MB). Peak memory consumption was 18.1 MB. Max. memory is 16.1 GB. [2020-11-29 14:21:03,173 INFO L168 Benchmark]: Witness Printer took 118.09 ms. Allocated memory is still 56.6 MB. Free memory was 30.2 MB in the beginning and 26.5 MB in the end (delta: 3.8 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-29 14:21:03,176 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 46.1 MB. Free memory was 29.2 MB in the beginning and 29.1 MB in the end (delta: 70.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 375.07 ms. Allocated memory is still 46.1 MB. Free memory was 22.9 MB in the beginning and 21.2 MB in the end (delta: 1.7 MB). Peak memory consumption was 3.3 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 85.92 ms. Allocated memory is still 46.1 MB. Free memory was 21.2 MB in the beginning and 19.4 MB in the end (delta: 1.8 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 51.85 ms. Allocated memory was 46.1 MB in the beginning and 56.6 MB in the end (delta: 10.5 MB). Free memory was 19.4 MB in the beginning and 40.1 MB in the end (delta: -20.7 MB). Peak memory consumption was 7.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 632.44 ms. Allocated memory is still 56.6 MB. Free memory was 39.8 MB in the beginning and 33.7 MB in the end (delta: 6.2 MB). Peak memory consumption was 15.9 MB. Max. memory is 16.1 GB. * TraceAbstraction took 5306.13 ms. Allocated memory is still 56.6 MB. Free memory was 33.4 MB in the beginning and 30.2 MB in the end (delta: 3.2 MB). Peak memory consumption was 18.1 MB. Max. memory is 16.1 GB. * Witness Printer took 118.09 ms. Allocated memory is still 56.6 MB. Free memory was 30.2 MB in the beginning and 26.5 MB in the end (delta: 3.8 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 3]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 55]: Loop Invariant [2020-11-29 14:21:03,186 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-11-29 14:21:03,186 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] Derived loop invariant: (\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~DOUBLE(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == y) && !~fp.eq~DOUBLE(\result, \result) - InvariantResult [Line: 18]: Loop Invariant [2020-11-29 14:21:03,189 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-11-29 14:21:03,189 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] Derived loop invariant: ((\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~DOUBLE(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == y) && !~fp.eq~DOUBLE(\result, \result)) && 1bv32 == \result - InvariantResult [Line: 65]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 31]: Loop Invariant Derived loop invariant: !~fp.eq~DOUBLE(y, y) && !~fp.eq~DOUBLE(x, x) - InvariantResult [Line: 28]: Loop Invariant Derived loop invariant: (!~fp.eq~DOUBLE(y, y) && !~fp.eq~DOUBLE(x, x)) || (!~fp.eq~DOUBLE(y, y) && !(0bv32 == \result)) - InvariantResult [Line: 31]: Loop Invariant Derived loop invariant: !~fp.eq~DOUBLE(y, y) && !~fp.eq~DOUBLE(x, x) - InvariantResult [Line: 28]: Loop Invariant Derived loop invariant: !~fp.eq~DOUBLE(x, x) && !~fp.eq~DOUBLE(y, y) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 29 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 4.9s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 1.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.2s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 182 SDtfs, 117 SDslu, 549 SDs, 0 SdLazy, 138 SolverSat, 19 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 181 GetRequests, 130 SyntacticMatches, 3 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 7 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 1.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=29occurred 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, 6 MinimizatonAttempts, 42 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 7 PreInvPairs, 19 NumberOfFragments, 74 HoareAnnotationTreeSize, 7 FomulaSimplifications, 184 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 39 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 1.1s InterpolantComputationTime, 88 NumberOfCodeBlocks, 88 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 164 ConstructedInterpolants, 36 QuantifiedInterpolants, 8416 SizeOfPredicates, 32 NumberOfNonLiveVariables, 399 ConjunctsInSsa, 38 ConjunctsInUnsatCore, 12 InterpolantComputations, 12 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...