./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/float-newlib/double_req_bl_1230.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_1230.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 858612fdb9071600e83746a6e504d4acbbe533c1 ....................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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_1230.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 858612fdb9071600e83746a6e504d4acbbe533c1 ...................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 14:19:41,634 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-29 14:19:41,637 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-29 14:19:41,684 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-29 14:19:41,685 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-29 14:19:41,691 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-29 14:19:41,693 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-29 14:19:41,700 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-29 14:19:41,706 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-29 14:19:41,712 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-29 14:19:41,713 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-29 14:19:41,715 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-29 14:19:41,715 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-29 14:19:41,719 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-29 14:19:41,720 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-29 14:19:41,721 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-29 14:19:41,723 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-29 14:19:41,725 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-29 14:19:41,729 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-29 14:19:41,737 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-29 14:19:41,747 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-29 14:19:41,752 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-29 14:19:41,753 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-29 14:19:41,754 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-29 14:19:41,757 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-29 14:19:41,758 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-29 14:19:41,758 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-29 14:19:41,759 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-29 14:19:41,759 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-29 14:19:41,761 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-29 14:19:41,761 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-29 14:19:41,762 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-29 14:19:41,763 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-29 14:19:41,764 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-29 14:19:41,765 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-29 14:19:41,765 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-29 14:19:41,766 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-29 14:19:41,766 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-29 14:19:41,767 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-29 14:19:41,768 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-29 14:19:41,769 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-29 14:19:41,770 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-29 14:19:41,796 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-29 14:19:41,797 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-29 14:19:41,798 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-29 14:19:41,799 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-29 14:19:41,799 INFO L138 SettingsManager]: * Use SBE=true [2020-11-29 14:19:41,799 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-29 14:19:41,799 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-29 14:19:41,800 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-29 14:19:41,800 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-29 14:19:41,800 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-29 14:19:41,800 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-29 14:19:41,801 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-29 14:19:41,801 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-29 14:19:41,801 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-29 14:19:41,802 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-29 14:19:41,802 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-29 14:19:41,802 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-29 14:19:41,802 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-29 14:19:41,803 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-29 14:19:41,803 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-29 14:19:41,803 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-29 14:19:41,803 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-29 14:19:41,804 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-29 14:19:41,804 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-29 14:19:41,804 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-29 14:19:41,804 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-29 14:19:41,805 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-29 14:19:41,805 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-29 14:19:41,805 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-29 14:19:41,805 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 858612fdb9071600e83746a6e504d4acbbe533c1 [2020-11-29 14:19:42,205 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-29 14:19:42,229 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-29 14:19:42,232 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-29 14:19:42,234 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-29 14:19:42,235 INFO L275 PluginConnector]: CDTParser initialized [2020-11-29 14:19:42,237 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1230.c [2020-11-29 14:19:42,325 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fb8f6a519/f392c7a44f6548b5bccf296382694fec/FLAG5b9f61b0f [2020-11-29 14:19:42,975 INFO L306 CDTParser]: Found 1 translation units. [2020-11-29 14:19:42,976 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/double_req_bl_1230.c [2020-11-29 14:19:42,984 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fb8f6a519/f392c7a44f6548b5bccf296382694fec/FLAG5b9f61b0f [2020-11-29 14:19:43,351 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fb8f6a519/f392c7a44f6548b5bccf296382694fec [2020-11-29 14:19:43,355 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-29 14:19:43,364 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-29 14:19:43,370 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-29 14:19:43,371 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-29 14:19:43,375 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-29 14:19:43,376 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 02:19:43" (1/1) ... [2020-11-29 14:19:43,381 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@30c0acfe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:19:43, skipping insertion in model container [2020-11-29 14:19:43,381 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 02:19:43" (1/1) ... [2020-11-29 14:19:43,389 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-29 14:19:43,410 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-29 14:19:43,656 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 14:19:43,665 INFO L203 MainTranslator]: Completed pre-run [2020-11-29 14:19:43,692 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 14:19:43,710 INFO L208 MainTranslator]: Completed translation [2020-11-29 14:19:43,710 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:19:43 WrapperNode [2020-11-29 14:19:43,711 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-29 14:19:43,712 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-29 14:19:43,712 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-29 14:19:43,712 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-29 14:19:43,721 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:19:43" (1/1) ... [2020-11-29 14:19:43,730 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:19:43" (1/1) ... [2020-11-29 14:19:43,756 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-29 14:19:43,757 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-29 14:19:43,758 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-29 14:19:43,758 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-29 14:19:43,767 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:19:43" (1/1) ... [2020-11-29 14:19:43,767 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:19:43" (1/1) ... [2020-11-29 14:19:43,772 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:19:43" (1/1) ... [2020-11-29 14:19:43,772 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:19:43" (1/1) ... [2020-11-29 14:19:43,780 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:19:43" (1/1) ... [2020-11-29 14:19:43,785 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:19:43" (1/1) ... [2020-11-29 14:19:43,787 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:19:43" (1/1) ... [2020-11-29 14:19:43,790 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-29 14:19:43,791 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-29 14:19:43,792 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-29 14:19:43,792 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-29 14:19:43,793 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:19:43" (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 14:19:43,887 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-29 14:19:43,888 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-29 14:19:43,888 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-11-29 14:19:43,889 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-29 14:19:43,889 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-29 14:19:43,890 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-29 14:19:43,891 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-29 14:19:44,318 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-29 14:19:44,319 INFO L298 CfgBuilder]: Removed 18 assume(true) statements. [2020-11-29 14:19:44,321 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 02:19:44 BoogieIcfgContainer [2020-11-29 14:19:44,321 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-29 14:19:44,323 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-29 14:19:44,323 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-29 14:19:44,327 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-29 14:19:44,328 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 02:19:43" (1/3) ... [2020-11-29 14:19:44,329 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c5b05a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 02:19:44, skipping insertion in model container [2020-11-29 14:19:44,329 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:19:43" (2/3) ... [2020-11-29 14:19:44,330 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c5b05a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 02:19:44, skipping insertion in model container [2020-11-29 14:19:44,330 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 02:19:44" (3/3) ... [2020-11-29 14:19:44,332 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1230.c [2020-11-29 14:19:44,351 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-29 14:19:44,356 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-29 14:19:44,372 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-29 14:19:44,403 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-29 14:19:44,404 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-29 14:19:44,404 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-29 14:19:44,404 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-29 14:19:44,404 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-29 14:19:44,405 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-29 14:19:44,405 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-29 14:19:44,405 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-29 14:19:44,421 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states. [2020-11-29 14:19:44,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-29 14:19:44,427 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 14:19:44,428 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 14:19:44,429 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 14:19:44,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 14:19:44,437 INFO L82 PathProgramCache]: Analyzing trace with hash -958093107, now seen corresponding path program 1 times [2020-11-29 14:19:44,449 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 14:19:44,450 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [655828376] [2020-11-29 14:19:44,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 14:19:44,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 14:19:44,612 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 14:19:44,613 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [655828376] [2020-11-29 14:19:44,614 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 14:19:44,615 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-29 14:19:44,616 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [291155601] [2020-11-29 14:19:44,621 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-29 14:19:44,621 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 14:19:44,637 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-29 14:19:44,638 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-29 14:19:44,640 INFO L87 Difference]: Start difference. First operand 29 states. Second operand 2 states. [2020-11-29 14:19:44,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 14:19:44,660 INFO L93 Difference]: Finished difference Result 55 states and 85 transitions. [2020-11-29 14:19:44,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-29 14:19:44,662 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2020-11-29 14:19:44,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 14:19:44,672 INFO L225 Difference]: With dead ends: 55 [2020-11-29 14:19:44,673 INFO L226 Difference]: Without dead ends: 25 [2020-11-29 14:19:44,676 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 14:19:44,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2020-11-29 14:19:44,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2020-11-29 14:19:44,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2020-11-29 14:19:44,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 35 transitions. [2020-11-29 14:19:44,719 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 35 transitions. Word has length 10 [2020-11-29 14:19:44,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 14:19:44,720 INFO L481 AbstractCegarLoop]: Abstraction has 25 states and 35 transitions. [2020-11-29 14:19:44,720 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-29 14:19:44,720 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 35 transitions. [2020-11-29 14:19:44,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-29 14:19:44,721 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 14:19:44,721 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 14:19:44,722 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-29 14:19:44,722 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 14:19:44,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 14:19:44,723 INFO L82 PathProgramCache]: Analyzing trace with hash 1001566992, now seen corresponding path program 1 times [2020-11-29 14:19:44,723 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 14:19:44,724 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [578940410] [2020-11-29 14:19:44,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 14:19:44,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 14:19:44,852 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 14:19:44,854 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [578940410] [2020-11-29 14:19:44,855 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 14:19:44,855 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 14:19:44,855 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [135106081] [2020-11-29 14:19:44,857 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 14:19:44,857 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 14:19:44,858 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 14:19:44,860 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 14:19:44,860 INFO L87 Difference]: Start difference. First operand 25 states and 35 transitions. Second operand 4 states. [2020-11-29 14:19:44,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 14:19:44,951 INFO L93 Difference]: Finished difference Result 41 states and 52 transitions. [2020-11-29 14:19:44,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 14:19:44,952 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-11-29 14:19:44,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 14:19:44,953 INFO L225 Difference]: With dead ends: 41 [2020-11-29 14:19:44,953 INFO L226 Difference]: Without dead ends: 36 [2020-11-29 14:19:44,955 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 14:19:44,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-11-29 14:19:44,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 27. [2020-11-29 14:19:44,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-11-29 14:19:44,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 37 transitions. [2020-11-29 14:19:44,962 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 37 transitions. Word has length 11 [2020-11-29 14:19:44,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 14:19:44,962 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 37 transitions. [2020-11-29 14:19:44,962 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 14:19:44,962 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 37 transitions. [2020-11-29 14:19:44,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-29 14:19:44,963 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 14:19:44,963 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 14:19:44,964 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-29 14:19:44,964 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 14:19:44,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 14:19:44,965 INFO L82 PathProgramCache]: Analyzing trace with hash 502183504, now seen corresponding path program 1 times [2020-11-29 14:19:44,965 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 14:19:44,965 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [920644337] [2020-11-29 14:19:44,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 14:19:44,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 14:19:45,056 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 14:19:45,057 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [920644337] [2020-11-29 14:19:45,057 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 14:19:45,057 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 14:19:45,057 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [905444788] [2020-11-29 14:19:45,060 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 14:19:45,060 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 14:19:45,061 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 14:19:45,061 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 14:19:45,062 INFO L87 Difference]: Start difference. First operand 27 states and 37 transitions. Second operand 4 states. [2020-11-29 14:19:45,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 14:19:45,139 INFO L93 Difference]: Finished difference Result 43 states and 54 transitions. [2020-11-29 14:19:45,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 14:19:45,140 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-11-29 14:19:45,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 14:19:45,144 INFO L225 Difference]: With dead ends: 43 [2020-11-29 14:19:45,144 INFO L226 Difference]: Without dead ends: 38 [2020-11-29 14:19:45,145 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 14:19:45,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-11-29 14:19:45,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 27. [2020-11-29 14:19:45,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-11-29 14:19:45,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 37 transitions. [2020-11-29 14:19:45,157 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 37 transitions. Word has length 12 [2020-11-29 14:19:45,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 14:19:45,157 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 37 transitions. [2020-11-29 14:19:45,157 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 14:19:45,158 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 37 transitions. [2020-11-29 14:19:45,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-11-29 14:19:45,158 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 14:19:45,158 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 14:19:45,159 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-29 14:19:45,159 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 14:19:45,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 14:19:45,160 INFO L82 PathProgramCache]: Analyzing trace with hash -1951251627, now seen corresponding path program 1 times [2020-11-29 14:19:45,160 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 14:19:45,161 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [451348933] [2020-11-29 14:19:45,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 14:19:45,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 14:19:45,259 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 14:19:45,260 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [451348933] [2020-11-29 14:19:45,260 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 14:19:45,260 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 14:19:45,260 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1557221720] [2020-11-29 14:19:45,261 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 14:19:45,261 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 14:19:45,262 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 14:19:45,262 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 14:19:45,262 INFO L87 Difference]: Start difference. First operand 27 states and 37 transitions. Second operand 4 states. [2020-11-29 14:19:45,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 14:19:45,315 INFO L93 Difference]: Finished difference Result 45 states and 56 transitions. [2020-11-29 14:19:45,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 14:19:45,316 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-11-29 14:19:45,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 14:19:45,317 INFO L225 Difference]: With dead ends: 45 [2020-11-29 14:19:45,317 INFO L226 Difference]: Without dead ends: 40 [2020-11-29 14:19:45,318 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 14:19:45,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-11-29 14:19:45,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 27. [2020-11-29 14:19:45,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-11-29 14:19:45,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 37 transitions. [2020-11-29 14:19:45,323 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 37 transitions. Word has length 13 [2020-11-29 14:19:45,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 14:19:45,324 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 37 transitions. [2020-11-29 14:19:45,324 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 14:19:45,324 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 37 transitions. [2020-11-29 14:19:45,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-11-29 14:19:45,325 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 14:19:45,325 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 14:19:45,326 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-29 14:19:45,326 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 14:19:45,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 14:19:45,327 INFO L82 PathProgramCache]: Analyzing trace with hash -555778251, now seen corresponding path program 1 times [2020-11-29 14:19:45,327 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 14:19:45,327 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1066653981] [2020-11-29 14:19:45,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 14:19:45,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 14:19:45,373 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 14:19:45,374 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1066653981] [2020-11-29 14:19:45,374 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 14:19:45,374 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 14:19:45,375 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1495592945] [2020-11-29 14:19:45,375 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 14:19:45,375 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 14:19:45,376 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 14:19:45,376 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 14:19:45,377 INFO L87 Difference]: Start difference. First operand 27 states and 37 transitions. Second operand 4 states. [2020-11-29 14:19:45,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 14:19:45,418 INFO L93 Difference]: Finished difference Result 43 states and 54 transitions. [2020-11-29 14:19:45,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 14:19:45,419 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2020-11-29 14:19:45,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 14:19:45,420 INFO L225 Difference]: With dead ends: 43 [2020-11-29 14:19:45,420 INFO L226 Difference]: Without dead ends: 38 [2020-11-29 14:19:45,421 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 14:19:45,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-11-29 14:19:45,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 27. [2020-11-29 14:19:45,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-11-29 14:19:45,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 37 transitions. [2020-11-29 14:19:45,426 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 37 transitions. Word has length 14 [2020-11-29 14:19:45,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 14:19:45,427 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 37 transitions. [2020-11-29 14:19:45,427 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 14:19:45,427 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 37 transitions. [2020-11-29 14:19:45,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-11-29 14:19:45,428 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 14:19:45,428 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 14:19:45,428 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-29 14:19:45,429 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 14:19:45,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 14:19:45,429 INFO L82 PathProgramCache]: Analyzing trace with hash 1219229111, now seen corresponding path program 1 times [2020-11-29 14:19:45,430 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 14:19:45,430 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [626797635] [2020-11-29 14:19:45,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 14:19:45,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 14:19:45,481 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 14:19:45,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 14:19:45,522 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 14:19:45,548 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 14:19:45,548 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-29 14:19:45,548 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-29 14:19:45,580 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.11 02:19:45 BoogieIcfgContainer [2020-11-29 14:19:45,580 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-29 14:19:45,590 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-29 14:19:45,590 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-29 14:19:45,591 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-29 14:19:45,591 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 02:19:44" (3/4) ... [2020-11-29 14:19:45,595 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-11-29 14:19:45,595 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-29 14:19:45,598 INFO L168 Benchmark]: Toolchain (without parser) took 2239.13 ms. Allocated memory was 48.2 MB in the beginning and 71.3 MB in the end (delta: 23.1 MB). Free memory was 26.0 MB in the beginning and 54.5 MB in the end (delta: -28.4 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 14:19:45,598 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 37.7 MB. Free memory is still 18.3 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 14:19:45,599 INFO L168 Benchmark]: CACSL2BoogieTranslator took 340.76 ms. Allocated memory is still 48.2 MB. Free memory was 25.4 MB in the beginning and 26.4 MB in the end (delta: -1.0 MB). Peak memory consumption was 5.5 MB. Max. memory is 16.1 GB. [2020-11-29 14:19:45,600 INFO L168 Benchmark]: Boogie Procedure Inliner took 44.68 ms. Allocated memory is still 48.2 MB. Free memory was 26.4 MB in the beginning and 24.5 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 14:19:45,601 INFO L168 Benchmark]: Boogie Preprocessor took 33.06 ms. Allocated memory is still 48.2 MB. Free memory was 24.5 MB in the beginning and 23.2 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 14:19:45,602 INFO L168 Benchmark]: RCFGBuilder took 529.97 ms. Allocated memory was 48.2 MB in the beginning and 58.7 MB in the end (delta: 10.5 MB). Free memory was 23.1 MB in the beginning and 37.7 MB in the end (delta: -14.7 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2020-11-29 14:19:45,603 INFO L168 Benchmark]: TraceAbstraction took 1257.09 ms. Allocated memory is still 58.7 MB. Free memory was 37.3 MB in the beginning and 23.0 MB in the end (delta: 14.3 MB). Peak memory consumption was 13.6 MB. Max. memory is 16.1 GB. [2020-11-29 14:19:45,603 INFO L168 Benchmark]: Witness Printer took 5.00 ms. Allocated memory is still 71.3 MB. Free memory is still 54.5 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 14:19:45,608 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 37.7 MB. Free memory is still 18.3 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 340.76 ms. Allocated memory is still 48.2 MB. Free memory was 25.4 MB in the beginning and 26.4 MB in the end (delta: -1.0 MB). Peak memory consumption was 5.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 44.68 ms. Allocated memory is still 48.2 MB. Free memory was 26.4 MB in the beginning and 24.5 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 33.06 ms. Allocated memory is still 48.2 MB. Free memory was 24.5 MB in the beginning and 23.2 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 529.97 ms. Allocated memory was 48.2 MB in the beginning and 58.7 MB in the end (delta: 10.5 MB). Free memory was 23.1 MB in the beginning and 37.7 MB in the end (delta: -14.7 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1257.09 ms. Allocated memory is still 58.7 MB. Free memory was 37.3 MB in the beginning and 23.0 MB in the end (delta: 14.3 MB). Peak memory consumption was 13.6 MB. Max. memory is 16.1 GB. * Witness Printer took 5.00 ms. Allocated memory is still 71.3 MB. Free memory is still 54.5 MB. There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 3]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 18, overapproximation of someBinaryArithmeticDOUBLEoperation at line 63. Possible FailurePath: [L63] double x = 0.0 / 0.0; [L64] double y = 0.0 / 0.0; [L20] __uint32_t msw, lsw; [L23] ieee_double_shape_type ew_u; [L24] ew_u.value = (x) [L25] EXPR ew_u.parts.msw [L25] (msw) = ew_u.parts.msw [L26] EXPR ew_u.parts.lsw [L26] (lsw) = ew_u.parts.lsw [L29-L30] COND FALSE !((msw == 0x00000000 && lsw == 0x00000000) || (msw == 0x80000000 && lsw == 0x00000000)) [L32-L33] COND FALSE !((msw >= 0x00100000 && msw <= 0x7fefffff) || (msw >= 0x80100000 && msw <= 0xffefffff)) [L35-L36] COND FALSE !(( msw <= 0x000fffff) || (msw >= 0x80000000 && msw <= 0x800fffff)) [L39-L40] COND FALSE !((msw == 0x7ff00000 && lsw == 0x00000000) || (msw == 0xfff00000 && lsw == 0x00000000)) [L43] return 0; [L47] COND TRUE __fpclassify_double(x) == 0 [L48] return y; [L65] double res = fmin_double(x, y); [L18] return x != x; [L67] COND TRUE !isnan_double(res) [L3] __assert_fail("0", "double_req_bl_1230.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 14:19:48,124 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-29 14:19:48,127 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-29 14:19:48,161 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-29 14:19:48,162 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-29 14:19:48,164 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-29 14:19:48,165 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-29 14:19:48,168 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-29 14:19:48,170 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-29 14:19:48,171 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-29 14:19:48,172 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-29 14:19:48,174 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-29 14:19:48,174 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-29 14:19:48,175 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-29 14:19:48,177 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-29 14:19:48,178 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-29 14:19:48,179 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-29 14:19:48,180 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-29 14:19:48,182 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-29 14:19:48,185 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-29 14:19:48,187 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-29 14:19:48,196 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-29 14:19:48,198 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-29 14:19:48,199 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-29 14:19:48,202 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-29 14:19:48,202 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-29 14:19:48,203 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-29 14:19:48,206 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-29 14:19:48,207 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-29 14:19:48,208 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-29 14:19:48,212 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-29 14:19:48,214 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-29 14:19:48,215 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-29 14:19:48,217 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-29 14:19:48,218 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-29 14:19:48,219 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-29 14:19:48,220 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-29 14:19:48,221 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-29 14:19:48,221 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-29 14:19:48,224 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-29 14:19:48,225 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-29 14:19:48,228 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2020-11-29 14:19:48,282 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-29 14:19:48,282 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-29 14:19:48,285 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-29 14:19:48,285 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-29 14:19:48,285 INFO L138 SettingsManager]: * Use SBE=true [2020-11-29 14:19:48,286 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-29 14:19:48,286 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-29 14:19:48,286 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-29 14:19:48,287 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-29 14:19:48,287 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-29 14:19:48,288 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-29 14:19:48,288 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-29 14:19:48,289 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-11-29 14:19:48,289 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-11-29 14:19:48,289 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-29 14:19:48,289 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-29 14:19:48,290 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-29 14:19:48,290 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-29 14:19:48,290 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-29 14:19:48,290 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-29 14:19:48,291 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-29 14:19:48,291 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-29 14:19:48,291 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-29 14:19:48,291 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-29 14:19:48,292 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-29 14:19:48,292 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-29 14:19:48,292 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2020-11-29 14:19:48,292 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-11-29 14:19:48,293 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-29 14:19:48,293 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-29 14:19:48,293 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-29 14:19:48,294 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 858612fdb9071600e83746a6e504d4acbbe533c1 [2020-11-29 14:19:48,741 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-29 14:19:48,786 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-29 14:19:48,789 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-29 14:19:48,790 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-29 14:19:48,791 INFO L275 PluginConnector]: CDTParser initialized [2020-11-29 14:19:48,792 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1230.c [2020-11-29 14:19:48,879 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6641ca171/69ad59a74b1b4dd49a04baf6c45c2423/FLAG26a23636b [2020-11-29 14:19:49,390 INFO L306 CDTParser]: Found 1 translation units. [2020-11-29 14:19:49,391 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/double_req_bl_1230.c [2020-11-29 14:19:49,398 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6641ca171/69ad59a74b1b4dd49a04baf6c45c2423/FLAG26a23636b [2020-11-29 14:19:49,774 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6641ca171/69ad59a74b1b4dd49a04baf6c45c2423 [2020-11-29 14:19:49,778 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-29 14:19:49,788 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-29 14:19:49,792 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-29 14:19:49,792 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-29 14:19:49,796 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-29 14:19:49,797 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 02:19:49" (1/1) ... [2020-11-29 14:19:49,800 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@505f2857 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:19:49, skipping insertion in model container [2020-11-29 14:19:49,800 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 02:19:49" (1/1) ... [2020-11-29 14:19:49,812 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-29 14:19:49,835 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-29 14:19:50,071 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 14:19:50,092 INFO L203 MainTranslator]: Completed pre-run [2020-11-29 14:19:50,142 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 14:19:50,166 INFO L208 MainTranslator]: Completed translation [2020-11-29 14:19:50,167 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:19:50 WrapperNode [2020-11-29 14:19:50,167 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-29 14:19:50,168 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-29 14:19:50,168 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-29 14:19:50,169 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-29 14:19:50,177 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:19:50" (1/1) ... [2020-11-29 14:19:50,188 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:19:50" (1/1) ... [2020-11-29 14:19:50,215 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-29 14:19:50,216 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-29 14:19:50,216 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-29 14:19:50,217 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-29 14:19:50,226 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:19:50" (1/1) ... [2020-11-29 14:19:50,227 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:19:50" (1/1) ... [2020-11-29 14:19:50,232 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:19:50" (1/1) ... [2020-11-29 14:19:50,232 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:19:50" (1/1) ... [2020-11-29 14:19:50,243 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:19:50" (1/1) ... [2020-11-29 14:19:50,248 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:19:50" (1/1) ... [2020-11-29 14:19:50,251 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:19:50" (1/1) ... [2020-11-29 14:19:50,255 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-29 14:19:50,257 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-29 14:19:50,257 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-29 14:19:50,257 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-29 14:19:50,258 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:19:50" (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 14:19:50,360 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2020-11-29 14:19:50,362 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-11-29 14:19:50,362 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-29 14:19:50,362 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2020-11-29 14:19:50,363 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-29 14:19:50,363 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-29 14:19:50,363 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-29 14:19:50,790 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-29 14:19:50,791 INFO L298 CfgBuilder]: Removed 18 assume(true) statements. [2020-11-29 14:19:50,793 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 02:19:50 BoogieIcfgContainer [2020-11-29 14:19:50,793 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-29 14:19:50,795 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-29 14:19:50,795 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-29 14:19:50,800 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-29 14:19:50,800 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 02:19:49" (1/3) ... [2020-11-29 14:19:50,801 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c797720 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 02:19:50, skipping insertion in model container [2020-11-29 14:19:50,802 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:19:50" (2/3) ... [2020-11-29 14:19:50,802 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c797720 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 02:19:50, skipping insertion in model container [2020-11-29 14:19:50,803 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 02:19:50" (3/3) ... [2020-11-29 14:19:50,804 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1230.c [2020-11-29 14:19:50,823 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-29 14:19:50,827 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-29 14:19:50,842 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-29 14:19:50,871 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-29 14:19:50,872 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-29 14:19:50,872 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-29 14:19:50,872 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-29 14:19:50,872 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-29 14:19:50,873 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-29 14:19:50,873 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-29 14:19:50,873 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-29 14:19:50,891 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states. [2020-11-29 14:19:50,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-29 14:19:50,906 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 14:19:50,907 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 14:19:50,907 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 14:19:50,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 14:19:50,919 INFO L82 PathProgramCache]: Analyzing trace with hash -958093107, now seen corresponding path program 1 times [2020-11-29 14:19:50,935 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-29 14:19:50,936 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [398522068] [2020-11-29 14:19:50,936 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 14:19:51,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 14:19:51,056 INFO L263 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 1 conjunts are in the unsatisfiable core [2020-11-29 14:19:51,061 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 14:19:51,089 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 14:19:51,089 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-29 14:19:51,116 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 14:19:51,117 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [398522068] [2020-11-29 14:19:51,118 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-29 14:19:51,118 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-11-29 14:19:51,119 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [656325360] [2020-11-29 14:19:51,124 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-29 14:19:51,125 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-29 14:19:51,139 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-29 14:19:51,140 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-29 14:19:51,142 INFO L87 Difference]: Start difference. First operand 29 states. Second operand 2 states. [2020-11-29 14:19:51,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 14:19:51,162 INFO L93 Difference]: Finished difference Result 55 states and 85 transitions. [2020-11-29 14:19:51,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-29 14:19:51,163 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2020-11-29 14:19:51,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 14:19:51,173 INFO L225 Difference]: With dead ends: 55 [2020-11-29 14:19:51,173 INFO L226 Difference]: Without dead ends: 25 [2020-11-29 14:19:51,176 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 14:19:51,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2020-11-29 14:19:51,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2020-11-29 14:19:51,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2020-11-29 14:19:51,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 35 transitions. [2020-11-29 14:19:51,214 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 35 transitions. Word has length 10 [2020-11-29 14:19:51,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 14:19:51,215 INFO L481 AbstractCegarLoop]: Abstraction has 25 states and 35 transitions. [2020-11-29 14:19:51,215 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-29 14:19:51,215 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 35 transitions. [2020-11-29 14:19:51,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-29 14:19:51,216 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 14:19:51,216 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 14:19:51,434 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-11-29 14:19:51,437 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 14:19:51,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 14:19:51,438 INFO L82 PathProgramCache]: Analyzing trace with hash 1001566992, now seen corresponding path program 1 times [2020-11-29 14:19:51,439 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-29 14:19:51,440 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1106720457] [2020-11-29 14:19:51,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 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 14:19:51,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 14:19:51,555 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 3 conjunts are in the unsatisfiable core [2020-11-29 14:19:51,557 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 14:19:51,612 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 14:19:51,612 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-29 14:19:51,662 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 14:19:51,663 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1106720457] [2020-11-29 14:19:51,663 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-29 14:19:51,664 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2020-11-29 14:19:51,664 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [685365541] [2020-11-29 14:19:51,665 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-29 14:19:51,666 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-29 14:19:51,667 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-29 14:19:51,668 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-29 14:19:51,668 INFO L87 Difference]: Start difference. First operand 25 states and 35 transitions. Second operand 6 states. [2020-11-29 14:19:51,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 14:19:51,773 INFO L93 Difference]: Finished difference Result 52 states and 65 transitions. [2020-11-29 14:19:51,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-29 14:19:51,774 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 11 [2020-11-29 14:19:51,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 14:19:51,775 INFO L225 Difference]: With dead ends: 52 [2020-11-29 14:19:51,776 INFO L226 Difference]: Without dead ends: 47 [2020-11-29 14:19:51,777 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 14:19:51,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-11-29 14:19:51,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 27. [2020-11-29 14:19:51,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-11-29 14:19:51,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 37 transitions. [2020-11-29 14:19:51,785 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 37 transitions. Word has length 11 [2020-11-29 14:19:51,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 14:19:51,786 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 37 transitions. [2020-11-29 14:19:51,786 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-29 14:19:51,786 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 37 transitions. [2020-11-29 14:19:51,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-11-29 14:19:51,787 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 14:19:51,787 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 14:19:52,001 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-11-29 14:19:52,002 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 14:19:52,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 14:19:52,004 INFO L82 PathProgramCache]: Analyzing trace with hash 1219229111, now seen corresponding path program 1 times [2020-11-29 14:19:52,006 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-29 14:19:52,006 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [830170109] [2020-11-29 14:19:52,007 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 14:19:52,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 14:19:52,112 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 10 conjunts are in the unsatisfiable core [2020-11-29 14:19:52,114 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 14:19:52,319 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 14:19:52,321 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-29 14:19:52,443 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 14:19:52,443 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [830170109] [2020-11-29 14:19:52,443 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-29 14:19:52,444 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 10 [2020-11-29 14:19:52,444 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2023708485] [2020-11-29 14:19:52,444 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-11-29 14:19:52,445 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-29 14:19:52,446 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-11-29 14:19:52,446 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-11-29 14:19:52,446 INFO L87 Difference]: Start difference. First operand 27 states and 37 transitions. Second operand 10 states. [2020-11-29 14:19:52,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 14:19:52,816 INFO L93 Difference]: Finished difference Result 36 states and 45 transitions. [2020-11-29 14:19:52,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-29 14:19:52,817 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 14 [2020-11-29 14:19:52,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 14:19:52,818 INFO L225 Difference]: With dead ends: 36 [2020-11-29 14:19:52,818 INFO L226 Difference]: Without dead ends: 27 [2020-11-29 14:19:52,819 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 2 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2020-11-29 14:19:52,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2020-11-29 14:19:52,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 25. [2020-11-29 14:19:52,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2020-11-29 14:19:52,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 33 transitions. [2020-11-29 14:19:52,823 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 33 transitions. Word has length 14 [2020-11-29 14:19:52,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 14:19:52,824 INFO L481 AbstractCegarLoop]: Abstraction has 25 states and 33 transitions. [2020-11-29 14:19:52,824 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-11-29 14:19:52,824 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 33 transitions. [2020-11-29 14:19:52,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-11-29 14:19:52,825 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 14:19:52,825 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 14:19:53,036 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-11-29 14:19:53,037 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 14:19:53,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 14:19:53,039 INFO L82 PathProgramCache]: Analyzing trace with hash 1012428811, now seen corresponding path program 1 times [2020-11-29 14:19:53,040 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-29 14:19:53,041 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2039145724] [2020-11-29 14:19:53,041 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 14:19:53,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 14:19:53,171 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 3 conjunts are in the unsatisfiable core [2020-11-29 14:19:53,173 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 14:19:53,196 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 14:19:53,197 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-29 14:19:53,228 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 14:19:53,229 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2039145724] [2020-11-29 14:19:53,229 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-29 14:19:53,229 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2020-11-29 14:19:53,229 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [544168027] [2020-11-29 14:19:53,230 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-29 14:19:53,230 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-29 14:19:53,231 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-29 14:19:53,231 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-29 14:19:53,231 INFO L87 Difference]: Start difference. First operand 25 states and 33 transitions. Second operand 6 states. [2020-11-29 14:19:53,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 14:19:53,353 INFO L93 Difference]: Finished difference Result 52 states and 59 transitions. [2020-11-29 14:19:53,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-29 14:19:53,354 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 16 [2020-11-29 14:19:53,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 14:19:53,355 INFO L225 Difference]: With dead ends: 52 [2020-11-29 14:19:53,355 INFO L226 Difference]: Without dead ends: 47 [2020-11-29 14:19:53,355 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 14:19:53,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-11-29 14:19:53,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 27. [2020-11-29 14:19:53,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-11-29 14:19:53,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 35 transitions. [2020-11-29 14:19:53,362 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 35 transitions. Word has length 16 [2020-11-29 14:19:53,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 14:19:53,362 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 35 transitions. [2020-11-29 14:19:53,362 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-29 14:19:53,362 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 35 transitions. [2020-11-29 14:19:53,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-11-29 14:19:53,363 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 14:19:53,363 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 14:19:53,581 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2020-11-29 14:19:53,582 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 14:19:53,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 14:19:53,583 INFO L82 PathProgramCache]: Analyzing trace with hash -356841937, now seen corresponding path program 1 times [2020-11-29 14:19:53,584 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-29 14:19:53,584 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [276036067] [2020-11-29 14:19:53,585 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 14:19:53,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 14:19:53,732 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 11 conjunts are in the unsatisfiable core [2020-11-29 14:19:53,734 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 14:19:53,904 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 14:19:53,904 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-29 14:19:54,065 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 14:19:54,066 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [276036067] [2020-11-29 14:19:54,066 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-29 14:19:54,066 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 12 [2020-11-29 14:19:54,067 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1699398043] [2020-11-29 14:19:54,067 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-11-29 14:19:54,067 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-29 14:19:54,068 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-11-29 14:19:54,068 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2020-11-29 14:19:54,069 INFO L87 Difference]: Start difference. First operand 27 states and 35 transitions. Second operand 12 states. [2020-11-29 14:19:54,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 14:19:54,549 INFO L93 Difference]: Finished difference Result 32 states and 39 transitions. [2020-11-29 14:19:54,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-29 14:19:54,550 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 18 [2020-11-29 14:19:54,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 14:19:54,551 INFO L225 Difference]: With dead ends: 32 [2020-11-29 14:19:54,551 INFO L226 Difference]: Without dead ends: 23 [2020-11-29 14:19:54,552 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 14:19:54,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-11-29 14:19:54,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2020-11-29 14:19:54,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-11-29 14:19:54,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 26 transitions. [2020-11-29 14:19:54,559 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 26 transitions. Word has length 18 [2020-11-29 14:19:54,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 14:19:54,559 INFO L481 AbstractCegarLoop]: Abstraction has 23 states and 26 transitions. [2020-11-29 14:19:54,559 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-11-29 14:19:54,560 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 26 transitions. [2020-11-29 14:19:54,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-11-29 14:19:54,560 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 14:19:54,561 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 14:19:54,761 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 mathsat -unsat_core_generation=3 [2020-11-29 14:19:54,762 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 14:19:54,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 14:19:54,763 INFO L82 PathProgramCache]: Analyzing trace with hash -208376157, now seen corresponding path program 1 times [2020-11-29 14:19:54,764 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-29 14:19:54,764 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [772973885] [2020-11-29 14:19:54,765 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 14:19:54,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 14:19:54,895 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 10 conjunts are in the unsatisfiable core [2020-11-29 14:19:54,897 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 14:19:55,018 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 14:19:55,019 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-29 14:19:55,129 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 14:19:55,130 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [772973885] [2020-11-29 14:19:55,130 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-29 14:19:55,130 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 10 [2020-11-29 14:19:55,130 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [719252756] [2020-11-29 14:19:55,131 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-11-29 14:19:55,131 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-29 14:19:55,131 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-11-29 14:19:55,132 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-11-29 14:19:55,132 INFO L87 Difference]: Start difference. First operand 23 states and 26 transitions. Second operand 10 states. [2020-11-29 14:19:55,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 14:19:55,447 INFO L93 Difference]: Finished difference Result 23 states and 26 transitions. [2020-11-29 14:19:55,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-29 14:19:55,447 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 19 [2020-11-29 14:19:55,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 14:19:55,448 INFO L225 Difference]: With dead ends: 23 [2020-11-29 14:19:55,448 INFO L226 Difference]: Without dead ends: 0 [2020-11-29 14:19:55,449 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 28 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 14:19:55,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-29 14:19:55,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-29 14:19:55,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-29 14:19:55,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-29 14:19:55,449 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 19 [2020-11-29 14:19:55,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 14:19:55,450 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-29 14:19:55,450 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-11-29 14:19:55,450 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-29 14:19:55,450 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-29 14:19:55,663 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 mathsat -unsat_core_generation=3 [2020-11-29 14:19:55,667 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-29 14:19:55,842 INFO L262 CegarLoopResult]: For program point L52(line 52) no Hoare annotation was computed. [2020-11-29 14:19:55,842 INFO L262 CegarLoopResult]: For program point L52-2(line 52) no Hoare annotation was computed. [2020-11-29 14:19:55,842 INFO L258 CegarLoopResult]: At program point L52-3(lines 46 53) the Hoare annotation is: (and (exists ((currentRoundingMode RoundingMode)) (= (fp.div currentRoundingMode (_ +zero 11 53) (_ +zero 11 53)) |ULTIMATE.start_fmin_double_#res|)) (not (fp.eq ULTIMATE.start_fmin_double_~y ULTIMATE.start_fmin_double_~y))) [2020-11-29 14:19:55,842 INFO L262 CegarLoopResult]: For program point L3(line 3) no Hoare annotation was computed. [2020-11-29 14:19:55,842 INFO L262 CegarLoopResult]: For program point L3-1(line 3) no Hoare annotation was computed. [2020-11-29 14:19:55,842 INFO L262 CegarLoopResult]: For program point L32(lines 32 43) no Hoare annotation was computed. [2020-11-29 14:19:55,843 INFO L262 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-11-29 14:19:55,843 INFO L262 CegarLoopResult]: For program point L32-1(lines 32 43) no Hoare annotation was computed. [2020-11-29 14:19:55,843 INFO L262 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-11-29 14:19:55,843 INFO L262 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-11-29 14:19:55,843 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 3) no Hoare annotation was computed. [2020-11-29 14:19:55,843 INFO L262 CegarLoopResult]: For program point L49(lines 49 50) no Hoare annotation was computed. [2020-11-29 14:19:55,843 INFO L262 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-29 14:19:55,843 INFO L262 CegarLoopResult]: For program point L67(lines 67 70) no Hoare annotation was computed. [2020-11-29 14:19:55,843 INFO L262 CegarLoopResult]: For program point L22-1(lines 22 27) no Hoare annotation was computed. [2020-11-29 14:19:55,843 INFO L258 CegarLoopResult]: At program point L22-2(lines 22 27) the Hoare annotation is: (and (not (fp.eq ULTIMATE.start_fmin_double_~x ULTIMATE.start_fmin_double_~x)) (not (fp.eq ULTIMATE.start_fmin_double_~y ULTIMATE.start_fmin_double_~y))) [2020-11-29 14:19:55,844 INFO L262 CegarLoopResult]: For program point L22-3(lines 19 44) no Hoare annotation was computed. [2020-11-29 14:19:55,844 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_fmin_double_#res|)) (= (_ bv1 32) |ULTIMATE.start_isnan_double_#res|) (not (fp.eq ULTIMATE.start_fmin_double_~y ULTIMATE.start_fmin_double_~y))) [2020-11-29 14:19:55,844 INFO L262 CegarLoopResult]: For program point L22-5(lines 22 27) no Hoare annotation was computed. [2020-11-29 14:19:55,844 INFO L258 CegarLoopResult]: At program point L22-6(lines 22 27) the Hoare annotation is: (and (not (fp.eq ULTIMATE.start_fmin_double_~x ULTIMATE.start_fmin_double_~x)) (not (fp.eq ULTIMATE.start_fmin_double_~y ULTIMATE.start_fmin_double_~y))) [2020-11-29 14:19:55,844 INFO L262 CegarLoopResult]: For program point L47(lines 47 48) no Hoare annotation was computed. [2020-11-29 14:19:55,844 INFO L262 CegarLoopResult]: For program point L22-7(lines 19 44) no Hoare annotation was computed. [2020-11-29 14:19:55,844 INFO L258 CegarLoopResult]: At program point L43(lines 19 44) the Hoare annotation is: (and (not (fp.eq ULTIMATE.start_fmin_double_~x ULTIMATE.start_fmin_double_~x)) (not (fp.eq ULTIMATE.start_fmin_double_~y ULTIMATE.start_fmin_double_~y))) [2020-11-29 14:19:55,844 INFO L258 CegarLoopResult]: At program point L43-1(lines 19 44) the Hoare annotation is: (let ((.cse0 (not (fp.eq ULTIMATE.start_fmin_double_~y ULTIMATE.start_fmin_double_~y)))) (or (and (not (= (_ bv0 32) |ULTIMATE.start___fpclassify_double_#res|)) .cse0) (and (not (fp.eq ULTIMATE.start_fmin_double_~x ULTIMATE.start_fmin_double_~x)) .cse0))) [2020-11-29 14:19:55,845 INFO L265 CegarLoopResult]: At program point L72(lines 55 73) the Hoare annotation is: true [2020-11-29 14:19:55,845 INFO L262 CegarLoopResult]: For program point L39(lines 39 43) no Hoare annotation was computed. [2020-11-29 14:19:55,845 INFO L262 CegarLoopResult]: For program point L39-1(lines 39 43) no Hoare annotation was computed. [2020-11-29 14:19:55,845 INFO L262 CegarLoopResult]: For program point L35(lines 35 43) no Hoare annotation was computed. [2020-11-29 14:19:55,845 INFO L262 CegarLoopResult]: For program point L35-1(lines 35 43) no Hoare annotation was computed. [2020-11-29 14:19:55,864 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-11-29 14:19:55,867 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-11-29 14:19:55,868 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-11-29 14:19:55,869 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-11-29 14:19:55,872 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.11 02:19:55 BoogieIcfgContainer [2020-11-29 14:19:55,872 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-29 14:19:55,873 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-29 14:19:55,873 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-29 14:19:55,873 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-29 14:19:55,874 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 02:19:50" (3/4) ... [2020-11-29 14:19:55,877 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-29 14:19:55,893 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 15 nodes and edges [2020-11-29 14:19:55,893 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2020-11-29 14:19:55,894 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2020-11-29 14:19:55,894 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-29 14:19:55,927 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~DOUBLE(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == \result) && !~fp.eq~DOUBLE(y, y) [2020-11-29 14:19:55,928 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~DOUBLE(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == \result) && 1bv32 == \result) && !~fp.eq~DOUBLE(y, y) [2020-11-29 14:19:55,929 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (!(0bv32 == \result) && !~fp.eq~DOUBLE(y, y)) || (!~fp.eq~DOUBLE(x, x) && !~fp.eq~DOUBLE(y, y)) [2020-11-29 14:19:55,990 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-11-29 14:19:55,993 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-29 14:19:55,996 INFO L168 Benchmark]: Toolchain (without parser) took 6212.65 ms. Allocated memory was 50.3 MB in the beginning and 75.5 MB in the end (delta: 25.2 MB). Free memory was 27.2 MB in the beginning and 34.0 MB in the end (delta: -6.8 MB). Peak memory consumption was 21.1 MB. Max. memory is 16.1 GB. [2020-11-29 14:19:55,996 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 50.3 MB. Free memory was 32.0 MB in the beginning and 32.0 MB in the end (delta: 63.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 14:19:55,997 INFO L168 Benchmark]: CACSL2BoogieTranslator took 375.43 ms. Allocated memory is still 50.3 MB. Free memory was 26.6 MB in the beginning and 26.9 MB in the end (delta: -251.7 kB). Peak memory consumption was 5.5 MB. Max. memory is 16.1 GB. [2020-11-29 14:19:55,998 INFO L168 Benchmark]: Boogie Procedure Inliner took 47.33 ms. Allocated memory is still 50.3 MB. Free memory was 26.9 MB in the beginning and 25.0 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 14:19:55,998 INFO L168 Benchmark]: Boogie Preprocessor took 39.53 ms. Allocated memory is still 50.3 MB. Free memory was 25.0 MB in the beginning and 23.4 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 14:19:55,999 INFO L168 Benchmark]: RCFGBuilder took 537.07 ms. Allocated memory was 50.3 MB in the beginning and 62.9 MB in the end (delta: 12.6 MB). Free memory was 23.4 MB in the beginning and 43.5 MB in the end (delta: -20.1 MB). Peak memory consumption was 10.4 MB. Max. memory is 16.1 GB. [2020-11-29 14:19:56,000 INFO L168 Benchmark]: TraceAbstraction took 5076.75 ms. Allocated memory was 62.9 MB in the beginning and 75.5 MB in the end (delta: 12.6 MB). Free memory was 43.2 MB in the beginning and 38.2 MB in the end (delta: 5.0 MB). Peak memory consumption was 17.8 MB. Max. memory is 16.1 GB. [2020-11-29 14:19:56,001 INFO L168 Benchmark]: Witness Printer took 120.90 ms. Allocated memory is still 75.5 MB. Free memory was 38.2 MB in the beginning and 34.0 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-29 14:19:56,003 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 50.3 MB. Free memory was 32.0 MB in the beginning and 32.0 MB in the end (delta: 63.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 375.43 ms. Allocated memory is still 50.3 MB. Free memory was 26.6 MB in the beginning and 26.9 MB in the end (delta: -251.7 kB). Peak memory consumption was 5.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 47.33 ms. Allocated memory is still 50.3 MB. Free memory was 26.9 MB in the beginning and 25.0 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 39.53 ms. Allocated memory is still 50.3 MB. Free memory was 25.0 MB in the beginning and 23.4 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 537.07 ms. Allocated memory was 50.3 MB in the beginning and 62.9 MB in the end (delta: 12.6 MB). Free memory was 23.4 MB in the beginning and 43.5 MB in the end (delta: -20.1 MB). Peak memory consumption was 10.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 5076.75 ms. Allocated memory was 62.9 MB in the beginning and 75.5 MB in the end (delta: 12.6 MB). Free memory was 43.2 MB in the beginning and 38.2 MB in the end (delta: 5.0 MB). Peak memory consumption was 17.8 MB. Max. memory is 16.1 GB. * Witness Printer took 120.90 ms. Allocated memory is still 75.5 MB. Free memory was 38.2 MB in the beginning and 34.0 MB in the end (delta: 4.2 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: 19]: Loop Invariant Derived loop invariant: (!(0bv32 == \result) && !~fp.eq~DOUBLE(y, y)) || (!~fp.eq~DOUBLE(x, x) && !~fp.eq~DOUBLE(y, y)) - InvariantResult [Line: 22]: Loop Invariant Derived loop invariant: !~fp.eq~DOUBLE(x, x) && !~fp.eq~DOUBLE(y, y) - InvariantResult [Line: 19]: Loop Invariant Derived loop invariant: !~fp.eq~DOUBLE(x, x) && !~fp.eq~DOUBLE(y, y) - InvariantResult [Line: 46]: Loop Invariant [2020-11-29 14:19:56,019 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-11-29 14:19:56,019 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()) == \result) && !~fp.eq~DOUBLE(y, y) - InvariantResult [Line: 18]: Loop Invariant [2020-11-29 14:19:56,020 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-11-29 14:19:56,031 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()) == \result) && 1bv32 == \result) && !~fp.eq~DOUBLE(y, y) - InvariantResult [Line: 55]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 22]: 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: 4.7s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 1.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 182 SDtfs, 117 SDslu, 549 SDs, 0 SdLazy, 138 SolverSat, 19 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 181 GetRequests, 130 SyntacticMatches, 3 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 7 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 1.4s 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, 231 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 4 FormulaSimplificationTreeSizeReductionInter, 0.0s 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...