./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/float_req_bl_1232a.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_05ac2faa-ee59-4888-9458-3ae4afd9a78a/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_05ac2faa-ee59-4888-9458-3ae4afd9a78a/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_05ac2faa-ee59-4888-9458-3ae4afd9a78a/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_05ac2faa-ee59-4888-9458-3ae4afd9a78a/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1232a.c -s /tmp/vcloud-vcloud-master/worker/run_dir_05ac2faa-ee59-4888-9458-3ae4afd9a78a/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_05ac2faa-ee59-4888-9458-3ae4afd9a78a/bin/uautomizer --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 588c8ae05db5b455b7a642d0c86b0e222c46f03c ................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_05ac2faa-ee59-4888-9458-3ae4afd9a78a/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_05ac2faa-ee59-4888-9458-3ae4afd9a78a/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_05ac2faa-ee59-4888-9458-3ae4afd9a78a/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_05ac2faa-ee59-4888-9458-3ae4afd9a78a/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1232a.c -s /tmp/vcloud-vcloud-master/worker/run_dir_05ac2faa-ee59-4888-9458-3ae4afd9a78a/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_05ac2faa-ee59-4888-9458-3ae4afd9a78a/bin/uautomizer --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 588c8ae05db5b455b7a642d0c86b0e222c46f03c ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-29 20:26:02,634 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-29 20:26:02,637 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-29 20:26:02,697 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-29 20:26:02,715 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-29 20:26:02,716 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-29 20:26:02,719 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-29 20:26:02,737 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-29 20:26:02,740 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-29 20:26:02,741 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-29 20:26:02,743 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-29 20:26:02,745 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-29 20:26:02,746 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-29 20:26:02,747 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-29 20:26:02,751 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-29 20:26:02,752 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-29 20:26:02,754 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-29 20:26:02,755 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-29 20:26:02,758 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-29 20:26:02,761 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-29 20:26:02,764 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-29 20:26:02,766 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-29 20:26:02,768 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-29 20:26:02,769 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-29 20:26:02,773 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-29 20:26:02,774 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-29 20:26:02,774 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-29 20:26:02,776 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-29 20:26:02,777 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-29 20:26:02,778 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-29 20:26:02,779 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-29 20:26:02,780 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-29 20:26:02,781 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-29 20:26:02,783 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-29 20:26:02,784 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-29 20:26:02,785 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-29 20:26:02,786 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-29 20:26:02,786 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-29 20:26:02,786 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-29 20:26:02,788 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-29 20:26:02,789 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-29 20:26:02,790 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_05ac2faa-ee59-4888-9458-3ae4afd9a78a/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-29 20:26:02,820 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-29 20:26:02,821 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-29 20:26:02,822 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-29 20:26:02,823 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-29 20:26:02,823 INFO L138 SettingsManager]: * Use SBE=true [2020-11-29 20:26:02,823 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-29 20:26:02,824 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-29 20:26:02,824 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-29 20:26:02,824 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-29 20:26:02,824 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-29 20:26:02,825 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-29 20:26:02,825 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-29 20:26:02,825 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-29 20:26:02,826 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-29 20:26:02,826 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-29 20:26:02,826 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-29 20:26:02,827 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-29 20:26:02,827 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-29 20:26:02,827 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-29 20:26:02,827 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-29 20:26:02,828 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-29 20:26:02,828 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-29 20:26:02,828 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-29 20:26:02,829 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-29 20:26:02,829 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-29 20:26:02,829 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-29 20:26:02,830 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-29 20:26:02,830 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-29 20:26:02,830 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-29 20:26:02,830 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:/tmp/vcloud-vcloud-master/worker/run_dir_05ac2faa-ee59-4888-9458-3ae4afd9a78a/bin/uautomizer/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_05ac2faa-ee59-4888-9458-3ae4afd9a78a/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 588c8ae05db5b455b7a642d0c86b0e222c46f03c [2020-11-29 20:26:03,159 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-29 20:26:03,206 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-29 20:26:03,214 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-29 20:26:03,215 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-29 20:26:03,219 INFO L275 PluginConnector]: CDTParser initialized [2020-11-29 20:26:03,221 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_05ac2faa-ee59-4888-9458-3ae4afd9a78a/bin/uautomizer/../../sv-benchmarks/c/float-newlib/float_req_bl_1232a.c [2020-11-29 20:26:03,298 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_05ac2faa-ee59-4888-9458-3ae4afd9a78a/bin/uautomizer/data/b9b8301bf/f115bf96b7da4041ad88ca9fc87d1a51/FLAGc7e082484 [2020-11-29 20:26:03,859 INFO L306 CDTParser]: Found 1 translation units. [2020-11-29 20:26:03,860 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_05ac2faa-ee59-4888-9458-3ae4afd9a78a/sv-benchmarks/c/float-newlib/float_req_bl_1232a.c [2020-11-29 20:26:03,867 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_05ac2faa-ee59-4888-9458-3ae4afd9a78a/bin/uautomizer/data/b9b8301bf/f115bf96b7da4041ad88ca9fc87d1a51/FLAGc7e082484 [2020-11-29 20:26:04,239 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_05ac2faa-ee59-4888-9458-3ae4afd9a78a/bin/uautomizer/data/b9b8301bf/f115bf96b7da4041ad88ca9fc87d1a51 [2020-11-29 20:26:04,242 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-29 20:26:04,246 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-29 20:26:04,251 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-29 20:26:04,251 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-29 20:26:04,255 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-29 20:26:04,255 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 08:26:04" (1/1) ... [2020-11-29 20:26:04,257 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@666b3e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:26:04, skipping insertion in model container [2020-11-29 20:26:04,258 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 08:26:04" (1/1) ... [2020-11-29 20:26:04,266 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-29 20:26:04,285 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-29 20:26:04,517 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 20:26:04,528 INFO L203 MainTranslator]: Completed pre-run [2020-11-29 20:26:04,557 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 20:26:04,574 INFO L208 MainTranslator]: Completed translation [2020-11-29 20:26:04,575 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:26:04 WrapperNode [2020-11-29 20:26:04,575 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-29 20:26:04,577 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-29 20:26:04,577 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-29 20:26:04,577 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-29 20:26:04,587 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:26:04" (1/1) ... [2020-11-29 20:26:04,596 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:26:04" (1/1) ... [2020-11-29 20:26:04,630 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-29 20:26:04,632 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-29 20:26:04,632 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-29 20:26:04,633 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-29 20:26:04,643 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:26:04" (1/1) ... [2020-11-29 20:26:04,643 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:26:04" (1/1) ... [2020-11-29 20:26:04,651 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:26:04" (1/1) ... [2020-11-29 20:26:04,652 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:26:04" (1/1) ... [2020-11-29 20:26:04,675 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:26:04" (1/1) ... [2020-11-29 20:26:04,683 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:26:04" (1/1) ... [2020-11-29 20:26:04,691 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:26:04" (1/1) ... [2020-11-29 20:26:04,697 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-29 20:26:04,707 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-29 20:26:04,708 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-29 20:26:04,708 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-29 20:26:04,709 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:26:04" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_05ac2faa-ee59-4888-9458-3ae4afd9a78a/bin/uautomizer/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 20:26:04,785 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-29 20:26:04,785 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-29 20:26:04,785 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-11-29 20:26:04,786 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-29 20:26:04,790 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-29 20:26:04,791 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-29 20:26:04,792 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-29 20:26:05,317 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-29 20:26:05,318 INFO L298 CfgBuilder]: Removed 20 assume(true) statements. [2020-11-29 20:26:05,321 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 08:26:05 BoogieIcfgContainer [2020-11-29 20:26:05,321 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-29 20:26:05,325 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-29 20:26:05,326 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-29 20:26:05,330 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-29 20:26:05,331 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 08:26:04" (1/3) ... [2020-11-29 20:26:05,332 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79b2b3e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 08:26:05, skipping insertion in model container [2020-11-29 20:26:05,332 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:26:04" (2/3) ... [2020-11-29 20:26:05,333 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79b2b3e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 08:26:05, skipping insertion in model container [2020-11-29 20:26:05,334 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 08:26:05" (3/3) ... [2020-11-29 20:26:05,335 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_1232a.c [2020-11-29 20:26:05,350 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-29 20:26:05,356 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-29 20:26:05,370 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-29 20:26:05,398 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-29 20:26:05,399 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-29 20:26:05,399 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-29 20:26:05,399 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-29 20:26:05,399 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-29 20:26:05,400 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-29 20:26:05,400 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-29 20:26:05,400 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-29 20:26:05,416 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states. [2020-11-29 20:26:05,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-29 20:26:05,423 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:26:05,424 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 20:26:05,424 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 20:26:05,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:26:05,449 INFO L82 PathProgramCache]: Analyzing trace with hash -958075201, now seen corresponding path program 1 times [2020-11-29 20:26:05,461 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:26:05,462 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [917724186] [2020-11-29 20:26:05,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:26:05,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:26:05,649 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 20:26:05,650 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [917724186] [2020-11-29 20:26:05,652 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 20:26:05,652 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-29 20:26:05,653 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [646862375] [2020-11-29 20:26:05,659 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-29 20:26:05,660 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:26:05,682 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-29 20:26:05,683 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-29 20:26:05,684 INFO L87 Difference]: Start difference. First operand 33 states. Second operand 2 states. [2020-11-29 20:26:05,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:26:05,705 INFO L93 Difference]: Finished difference Result 63 states and 99 transitions. [2020-11-29 20:26:05,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-29 20:26:05,706 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2020-11-29 20:26:05,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:26:05,716 INFO L225 Difference]: With dead ends: 63 [2020-11-29 20:26:05,717 INFO L226 Difference]: Without dead ends: 29 [2020-11-29 20:26:05,720 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 20:26:05,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-11-29 20:26:05,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2020-11-29 20:26:05,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-11-29 20:26:05,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 40 transitions. [2020-11-29 20:26:05,760 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 40 transitions. Word has length 10 [2020-11-29 20:26:05,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:26:05,761 INFO L481 AbstractCegarLoop]: Abstraction has 29 states and 40 transitions. [2020-11-29 20:26:05,761 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-29 20:26:05,761 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 40 transitions. [2020-11-29 20:26:05,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-29 20:26:05,762 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:26:05,762 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 20:26:05,763 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-29 20:26:05,763 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 20:26:05,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:26:05,764 INFO L82 PathProgramCache]: Analyzing trace with hash 1001584898, now seen corresponding path program 1 times [2020-11-29 20:26:05,764 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:26:05,765 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1619904132] [2020-11-29 20:26:05,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:26:05,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:26:05,882 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 20:26:05,883 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1619904132] [2020-11-29 20:26:05,883 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 20:26:05,883 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 20:26:05,884 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1093720948] [2020-11-29 20:26:05,885 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 20:26:05,886 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:26:05,887 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 20:26:05,887 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 20:26:05,887 INFO L87 Difference]: Start difference. First operand 29 states and 40 transitions. Second operand 4 states. [2020-11-29 20:26:06,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:26:06,001 INFO L93 Difference]: Finished difference Result 53 states and 67 transitions. [2020-11-29 20:26:06,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 20:26:06,001 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-11-29 20:26:06,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:26:06,003 INFO L225 Difference]: With dead ends: 53 [2020-11-29 20:26:06,003 INFO L226 Difference]: Without dead ends: 44 [2020-11-29 20:26:06,004 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 20:26:06,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-11-29 20:26:06,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 31. [2020-11-29 20:26:06,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-11-29 20:26:06,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 42 transitions. [2020-11-29 20:26:06,012 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 42 transitions. Word has length 11 [2020-11-29 20:26:06,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:26:06,013 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 42 transitions. [2020-11-29 20:26:06,013 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 20:26:06,013 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 42 transitions. [2020-11-29 20:26:06,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-29 20:26:06,014 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:26:06,014 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 20:26:06,015 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-29 20:26:06,015 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 20:26:06,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:26:06,016 INFO L82 PathProgramCache]: Analyzing trace with hash 502201410, now seen corresponding path program 1 times [2020-11-29 20:26:06,016 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:26:06,016 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1742200225] [2020-11-29 20:26:06,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:26:06,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:26:06,110 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 20:26:06,110 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1742200225] [2020-11-29 20:26:06,110 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 20:26:06,111 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 20:26:06,111 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [719163853] [2020-11-29 20:26:06,111 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 20:26:06,112 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:26:06,113 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 20:26:06,113 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 20:26:06,113 INFO L87 Difference]: Start difference. First operand 31 states and 42 transitions. Second operand 4 states. [2020-11-29 20:26:06,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:26:06,188 INFO L93 Difference]: Finished difference Result 55 states and 69 transitions. [2020-11-29 20:26:06,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 20:26:06,189 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-11-29 20:26:06,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:26:06,190 INFO L225 Difference]: With dead ends: 55 [2020-11-29 20:26:06,190 INFO L226 Difference]: Without dead ends: 46 [2020-11-29 20:26:06,191 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 20:26:06,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-11-29 20:26:06,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 31. [2020-11-29 20:26:06,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-11-29 20:26:06,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 42 transitions. [2020-11-29 20:26:06,200 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 42 transitions. Word has length 12 [2020-11-29 20:26:06,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:26:06,202 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 42 transitions. [2020-11-29 20:26:06,202 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 20:26:06,202 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 42 transitions. [2020-11-29 20:26:06,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-11-29 20:26:06,205 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:26:06,205 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 20:26:06,206 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-29 20:26:06,206 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 20:26:06,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:26:06,208 INFO L82 PathProgramCache]: Analyzing trace with hash -1951233721, now seen corresponding path program 1 times [2020-11-29 20:26:06,208 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:26:06,209 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1785925011] [2020-11-29 20:26:06,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:26:06,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:26:06,304 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 20:26:06,304 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1785925011] [2020-11-29 20:26:06,305 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 20:26:06,305 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 20:26:06,305 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [616032534] [2020-11-29 20:26:06,306 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 20:26:06,306 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:26:06,307 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 20:26:06,307 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 20:26:06,307 INFO L87 Difference]: Start difference. First operand 31 states and 42 transitions. Second operand 4 states. [2020-11-29 20:26:06,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:26:06,421 INFO L93 Difference]: Finished difference Result 57 states and 71 transitions. [2020-11-29 20:26:06,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 20:26:06,428 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-11-29 20:26:06,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:26:06,429 INFO L225 Difference]: With dead ends: 57 [2020-11-29 20:26:06,429 INFO L226 Difference]: Without dead ends: 48 [2020-11-29 20:26:06,430 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 20:26:06,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-11-29 20:26:06,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 31. [2020-11-29 20:26:06,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-11-29 20:26:06,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 42 transitions. [2020-11-29 20:26:06,443 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 42 transitions. Word has length 13 [2020-11-29 20:26:06,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:26:06,444 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 42 transitions. [2020-11-29 20:26:06,444 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 20:26:06,444 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 42 transitions. [2020-11-29 20:26:06,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-11-29 20:26:06,447 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:26:06,447 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 20:26:06,447 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-29 20:26:06,448 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 20:26:06,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:26:06,451 INFO L82 PathProgramCache]: Analyzing trace with hash -555760345, now seen corresponding path program 1 times [2020-11-29 20:26:06,451 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:26:06,452 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1827519869] [2020-11-29 20:26:06,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:26:06,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:26:06,553 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 20:26:06,553 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1827519869] [2020-11-29 20:26:06,553 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 20:26:06,553 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 20:26:06,554 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1219768235] [2020-11-29 20:26:06,554 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 20:26:06,554 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:26:06,555 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 20:26:06,555 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 20:26:06,556 INFO L87 Difference]: Start difference. First operand 31 states and 42 transitions. Second operand 4 states. [2020-11-29 20:26:06,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:26:06,629 INFO L93 Difference]: Finished difference Result 55 states and 69 transitions. [2020-11-29 20:26:06,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 20:26:06,630 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2020-11-29 20:26:06,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:26:06,631 INFO L225 Difference]: With dead ends: 55 [2020-11-29 20:26:06,631 INFO L226 Difference]: Without dead ends: 46 [2020-11-29 20:26:06,632 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 20:26:06,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-11-29 20:26:06,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 31. [2020-11-29 20:26:06,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-11-29 20:26:06,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 42 transitions. [2020-11-29 20:26:06,639 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 42 transitions. Word has length 14 [2020-11-29 20:26:06,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:26:06,639 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 42 transitions. [2020-11-29 20:26:06,639 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 20:26:06,640 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 42 transitions. [2020-11-29 20:26:06,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-11-29 20:26:06,641 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:26:06,641 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 20:26:06,641 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-29 20:26:06,641 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 20:26:06,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:26:06,642 INFO L82 PathProgramCache]: Analyzing trace with hash 1219247017, now seen corresponding path program 1 times [2020-11-29 20:26:06,642 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:26:06,643 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1200930692] [2020-11-29 20:26:06,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:26:06,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 20:26:06,674 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 20:26:06,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 20:26:06,707 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 20:26:06,735 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 20:26:06,735 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-29 20:26:06,735 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-29 20:26:06,779 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.11 08:26:06 BoogieIcfgContainer [2020-11-29 20:26:06,779 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-29 20:26:06,780 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-29 20:26:06,780 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-29 20:26:06,780 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-29 20:26:06,781 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 08:26:05" (3/4) ... [2020-11-29 20:26:06,785 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-11-29 20:26:06,785 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-29 20:26:06,788 INFO L168 Benchmark]: Toolchain (without parser) took 2540.47 ms. Allocated memory was 94.4 MB in the beginning and 115.3 MB in the end (delta: 21.0 MB). Free memory was 67.3 MB in the beginning and 71.5 MB in the end (delta: -4.2 MB). Peak memory consumption was 16.2 MB. Max. memory is 16.1 GB. [2020-11-29 20:26:06,789 INFO L168 Benchmark]: CDTParser took 0.35 ms. Allocated memory is still 94.4 MB. Free memory is still 51.5 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 20:26:06,790 INFO L168 Benchmark]: CACSL2BoogieTranslator took 324.73 ms. Allocated memory is still 94.4 MB. Free memory was 67.1 MB in the beginning and 71.5 MB in the end (delta: -4.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-29 20:26:06,791 INFO L168 Benchmark]: Boogie Procedure Inliner took 53.88 ms. Allocated memory is still 94.4 MB. Free memory was 71.5 MB in the beginning and 69.8 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 20:26:06,792 INFO L168 Benchmark]: Boogie Preprocessor took 74.91 ms. Allocated memory is still 94.4 MB. Free memory was 69.8 MB in the beginning and 68.1 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 20:26:06,793 INFO L168 Benchmark]: RCFGBuilder took 614.17 ms. Allocated memory is still 94.4 MB. Free memory was 68.1 MB in the beginning and 48.9 MB in the end (delta: 19.2 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. [2020-11-29 20:26:06,794 INFO L168 Benchmark]: TraceAbstraction took 1454.10 ms. Allocated memory was 94.4 MB in the beginning and 115.3 MB in the end (delta: 21.0 MB). Free memory was 48.5 MB in the beginning and 72.2 MB in the end (delta: -23.7 MB). Peak memory consumption was 455.8 kB. Max. memory is 16.1 GB. [2020-11-29 20:26:06,795 INFO L168 Benchmark]: Witness Printer took 5.30 ms. Allocated memory is still 115.3 MB. Free memory was 72.2 MB in the beginning and 71.5 MB in the end (delta: 676.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 20:26:06,800 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.35 ms. Allocated memory is still 94.4 MB. Free memory is still 51.5 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 324.73 ms. Allocated memory is still 94.4 MB. Free memory was 67.1 MB in the beginning and 71.5 MB in the end (delta: -4.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 53.88 ms. Allocated memory is still 94.4 MB. Free memory was 71.5 MB in the beginning and 69.8 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 74.91 ms. Allocated memory is still 94.4 MB. Free memory was 69.8 MB in the beginning and 68.1 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 614.17 ms. Allocated memory is still 94.4 MB. Free memory was 68.1 MB in the beginning and 48.9 MB in the end (delta: 19.2 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1454.10 ms. Allocated memory was 94.4 MB in the beginning and 115.3 MB in the end (delta: 21.0 MB). Free memory was 48.5 MB in the beginning and 72.2 MB in the end (delta: -23.7 MB). Peak memory consumption was 455.8 kB. Max. memory is 16.1 GB. * Witness Printer took 5.30 ms. Allocated memory is still 115.3 MB. Free memory was 72.2 MB in the beginning and 71.5 MB in the end (delta: 676.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 3]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 71, overapproximation of someUnaryFLOAToperation at line 67. Possible FailurePath: [L66] float x = 0.0f; [L67] float y = -0.0f; [L15] __uint32_t w; [L18] ieee_float_shape_type gf_u; [L19] gf_u.value = (x) [L20] EXPR gf_u.word [L20] (w) = gf_u.word [L23] COND FALSE !(w == 0x00000000 || w == 0x80000000) [L25-L26] COND FALSE !((w >= 0x00800000 && w <= 0x7f7fffff) || (w >= 0x80800000 && w <= 0xff7fffff)) [L28-L29] COND FALSE !((w >= 0x00000001 && w <= 0x007fffff) || (w >= 0x80000001 && w <= 0x807fffff)) [L31] COND FALSE !(w == 0x7f800000 || w == 0xff800000) [L34] return 0; [L38] COND TRUE __fpclassify_float(x) == 0 [L39] return y; [L68] float res = fmin_float(x, y); [L71] EXPR res == -0.0f && __signbit_float(res) == 1 [L71] COND TRUE !(res == -0.0f && __signbit_float(res) == 1) [L3] __assert_fail("0", "float_req_bl_1232a.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 33 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.3s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 251 SDtfs, 64 SDslu, 298 SDs, 0 SdLazy, 84 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 22 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=33occurred 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, 60 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-a4ecdab [2020-11-29 20:26:09,667 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-29 20:26:09,671 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-29 20:26:09,733 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-29 20:26:09,734 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-29 20:26:09,740 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-29 20:26:09,744 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-29 20:26:09,749 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-29 20:26:09,754 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-29 20:26:09,761 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-29 20:26:09,763 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-29 20:26:09,773 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-29 20:26:09,774 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-29 20:26:09,775 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-29 20:26:09,776 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-29 20:26:09,778 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-29 20:26:09,779 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-29 20:26:09,780 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-29 20:26:09,782 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-29 20:26:09,785 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-29 20:26:09,787 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-29 20:26:09,794 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-29 20:26:09,796 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-29 20:26:09,797 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-29 20:26:09,803 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-29 20:26:09,808 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-29 20:26:09,809 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-29 20:26:09,813 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-29 20:26:09,821 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-29 20:26:09,823 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-29 20:26:09,825 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-29 20:26:09,826 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-29 20:26:09,828 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-29 20:26:09,830 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-29 20:26:09,831 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-29 20:26:09,832 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-29 20:26:09,833 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-29 20:26:09,833 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-29 20:26:09,834 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-29 20:26:09,836 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-29 20:26:09,837 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-29 20:26:09,839 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_05ac2faa-ee59-4888-9458-3ae4afd9a78a/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2020-11-29 20:26:09,895 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-29 20:26:09,895 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-29 20:26:09,898 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-29 20:26:09,899 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-29 20:26:09,899 INFO L138 SettingsManager]: * Use SBE=true [2020-11-29 20:26:09,899 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-29 20:26:09,900 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-29 20:26:09,900 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-29 20:26:09,900 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-29 20:26:09,900 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-29 20:26:09,902 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-29 20:26:09,902 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-29 20:26:09,902 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-11-29 20:26:09,903 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-11-29 20:26:09,903 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-29 20:26:09,903 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-29 20:26:09,903 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-29 20:26:09,904 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-29 20:26:09,904 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-29 20:26:09,904 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-29 20:26:09,905 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-29 20:26:09,905 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-29 20:26:09,905 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-29 20:26:09,905 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-29 20:26:09,906 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-29 20:26:09,906 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-29 20:26:09,906 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2020-11-29 20:26:09,907 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-11-29 20:26:09,907 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-29 20:26:09,907 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-29 20:26:09,907 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-29 20:26:09,908 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:/tmp/vcloud-vcloud-master/worker/run_dir_05ac2faa-ee59-4888-9458-3ae4afd9a78a/bin/uautomizer/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_05ac2faa-ee59-4888-9458-3ae4afd9a78a/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 588c8ae05db5b455b7a642d0c86b0e222c46f03c [2020-11-29 20:26:10,394 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-29 20:26:10,443 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-29 20:26:10,447 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-29 20:26:10,448 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-29 20:26:10,451 INFO L275 PluginConnector]: CDTParser initialized [2020-11-29 20:26:10,453 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_05ac2faa-ee59-4888-9458-3ae4afd9a78a/bin/uautomizer/../../sv-benchmarks/c/float-newlib/float_req_bl_1232a.c [2020-11-29 20:26:10,543 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_05ac2faa-ee59-4888-9458-3ae4afd9a78a/bin/uautomizer/data/d82859f56/4912715b004a4c00b0a701f9e3150397/FLAGa8c2a5742 [2020-11-29 20:26:11,189 INFO L306 CDTParser]: Found 1 translation units. [2020-11-29 20:26:11,190 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_05ac2faa-ee59-4888-9458-3ae4afd9a78a/sv-benchmarks/c/float-newlib/float_req_bl_1232a.c [2020-11-29 20:26:11,200 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_05ac2faa-ee59-4888-9458-3ae4afd9a78a/bin/uautomizer/data/d82859f56/4912715b004a4c00b0a701f9e3150397/FLAGa8c2a5742 [2020-11-29 20:26:11,527 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_05ac2faa-ee59-4888-9458-3ae4afd9a78a/bin/uautomizer/data/d82859f56/4912715b004a4c00b0a701f9e3150397 [2020-11-29 20:26:11,530 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-29 20:26:11,533 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-29 20:26:11,540 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-29 20:26:11,540 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-29 20:26:11,544 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-29 20:26:11,547 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 08:26:11" (1/1) ... [2020-11-29 20:26:11,550 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@11c6e40c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:26:11, skipping insertion in model container [2020-11-29 20:26:11,550 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 08:26:11" (1/1) ... [2020-11-29 20:26:11,560 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-29 20:26:11,585 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-29 20:26:11,759 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 20:26:11,775 INFO L203 MainTranslator]: Completed pre-run [2020-11-29 20:26:11,834 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 20:26:11,868 INFO L208 MainTranslator]: Completed translation [2020-11-29 20:26:11,869 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:26:11 WrapperNode [2020-11-29 20:26:11,869 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-29 20:26:11,871 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-29 20:26:11,871 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-29 20:26:11,871 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-29 20:26:11,881 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:26:11" (1/1) ... [2020-11-29 20:26:11,894 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:26:11" (1/1) ... [2020-11-29 20:26:11,923 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-29 20:26:11,924 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-29 20:26:11,924 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-29 20:26:11,925 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-29 20:26:11,935 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:26:11" (1/1) ... [2020-11-29 20:26:11,936 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:26:11" (1/1) ... [2020-11-29 20:26:11,942 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:26:11" (1/1) ... [2020-11-29 20:26:11,943 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:26:11" (1/1) ... [2020-11-29 20:26:11,954 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:26:11" (1/1) ... [2020-11-29 20:26:11,960 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:26:11" (1/1) ... [2020-11-29 20:26:11,964 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:26:11" (1/1) ... [2020-11-29 20:26:11,968 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-29 20:26:11,970 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-29 20:26:11,970 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-29 20:26:11,970 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-29 20:26:11,971 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:26:11" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_05ac2faa-ee59-4888-9458-3ae4afd9a78a/bin/uautomizer/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 20:26:12,081 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-11-29 20:26:12,083 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-29 20:26:12,083 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2020-11-29 20:26:12,084 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-29 20:26:12,084 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-29 20:26:12,084 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2020-11-29 20:26:12,084 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-29 20:26:12,876 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-29 20:26:12,876 INFO L298 CfgBuilder]: Removed 20 assume(true) statements. [2020-11-29 20:26:12,880 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 08:26:12 BoogieIcfgContainer [2020-11-29 20:26:12,880 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-29 20:26:12,883 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-29 20:26:12,883 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-29 20:26:12,887 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-29 20:26:12,887 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 08:26:11" (1/3) ... [2020-11-29 20:26:12,888 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@319466e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 08:26:12, skipping insertion in model container [2020-11-29 20:26:12,889 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:26:11" (2/3) ... [2020-11-29 20:26:12,889 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@319466e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 08:26:12, skipping insertion in model container [2020-11-29 20:26:12,889 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 08:26:12" (3/3) ... [2020-11-29 20:26:12,891 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_1232a.c [2020-11-29 20:26:12,905 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-29 20:26:12,911 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-29 20:26:12,929 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-29 20:26:12,976 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-29 20:26:12,978 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-29 20:26:12,978 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-29 20:26:12,978 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-29 20:26:12,978 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-29 20:26:12,979 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-29 20:26:12,979 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-29 20:26:12,980 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-29 20:26:12,998 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states. [2020-11-29 20:26:13,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-29 20:26:13,012 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:26:13,013 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 20:26:13,014 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 20:26:13,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:26:13,024 INFO L82 PathProgramCache]: Analyzing trace with hash -958075201, now seen corresponding path program 1 times [2020-11-29 20:26:13,039 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-29 20:26:13,040 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [942801633] [2020-11-29 20:26:13,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_05ac2faa-ee59-4888-9458-3ae4afd9a78a/bin/uautomizer/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 20:26:13,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:26:13,175 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 1 conjunts are in the unsatisfiable core [2020-11-29 20:26:13,181 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 20:26:13,211 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 20:26:13,211 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-29 20:26:13,216 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 20:26:13,217 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [942801633] [2020-11-29 20:26:13,218 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-29 20:26:13,218 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-11-29 20:26:13,219 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1715320288] [2020-11-29 20:26:13,224 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-29 20:26:13,225 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-29 20:26:13,240 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-29 20:26:13,241 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-29 20:26:13,244 INFO L87 Difference]: Start difference. First operand 33 states. Second operand 2 states. [2020-11-29 20:26:13,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:26:13,266 INFO L93 Difference]: Finished difference Result 63 states and 99 transitions. [2020-11-29 20:26:13,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-29 20:26:13,268 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2020-11-29 20:26:13,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:26:13,279 INFO L225 Difference]: With dead ends: 63 [2020-11-29 20:26:13,280 INFO L226 Difference]: Without dead ends: 29 [2020-11-29 20:26:13,283 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 20:26:13,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-11-29 20:26:13,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2020-11-29 20:26:13,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-11-29 20:26:13,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 40 transitions. [2020-11-29 20:26:13,333 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 40 transitions. Word has length 10 [2020-11-29 20:26:13,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:26:13,333 INFO L481 AbstractCegarLoop]: Abstraction has 29 states and 40 transitions. [2020-11-29 20:26:13,334 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-29 20:26:13,334 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 40 transitions. [2020-11-29 20:26:13,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-29 20:26:13,335 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:26:13,335 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 20:26:13,547 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-11-29 20:26:13,548 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 20:26:13,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:26:13,549 INFO L82 PathProgramCache]: Analyzing trace with hash 1001584898, now seen corresponding path program 1 times [2020-11-29 20:26:13,550 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-29 20:26:13,551 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [19956589] [2020-11-29 20:26:13,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_05ac2faa-ee59-4888-9458-3ae4afd9a78a/bin/uautomizer/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 20:26:13,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:26:13,693 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 3 conjunts are in the unsatisfiable core [2020-11-29 20:26:13,695 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 20:26:13,738 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 20:26:13,742 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-29 20:26:13,775 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 20:26:13,775 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [19956589] [2020-11-29 20:26:13,776 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-29 20:26:13,776 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2020-11-29 20:26:13,776 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [276149053] [2020-11-29 20:26:13,778 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-29 20:26:13,778 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-29 20:26:13,780 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-29 20:26:13,780 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-29 20:26:13,781 INFO L87 Difference]: Start difference. First operand 29 states and 40 transitions. Second operand 6 states. [2020-11-29 20:26:13,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:26:13,974 INFO L93 Difference]: Finished difference Result 68 states and 85 transitions. [2020-11-29 20:26:13,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-29 20:26:13,977 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 11 [2020-11-29 20:26:13,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:26:13,979 INFO L225 Difference]: With dead ends: 68 [2020-11-29 20:26:13,979 INFO L226 Difference]: Without dead ends: 59 [2020-11-29 20:26:13,981 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 20:26:13,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2020-11-29 20:26:13,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 31. [2020-11-29 20:26:13,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-11-29 20:26:13,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 42 transitions. [2020-11-29 20:26:13,990 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 42 transitions. Word has length 11 [2020-11-29 20:26:13,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:26:13,991 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 42 transitions. [2020-11-29 20:26:13,991 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-29 20:26:13,991 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 42 transitions. [2020-11-29 20:26:13,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-11-29 20:26:13,992 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:26:13,993 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 20:26:14,206 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-11-29 20:26:14,206 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 20:26:14,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:26:14,210 INFO L82 PathProgramCache]: Analyzing trace with hash 1219247017, now seen corresponding path program 1 times [2020-11-29 20:26:14,211 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-29 20:26:14,212 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2134620046] [2020-11-29 20:26:14,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_05ac2faa-ee59-4888-9458-3ae4afd9a78a/bin/uautomizer/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 20:26:14,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:26:14,327 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 9 conjunts are in the unsatisfiable core [2020-11-29 20:26:14,330 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 20:26:14,369 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 20:26:14,370 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-29 20:26:14,430 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 20:26:14,431 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2134620046] [2020-11-29 20:26:14,431 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-29 20:26:14,431 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2020-11-29 20:26:14,432 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1043920465] [2020-11-29 20:26:14,432 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 20:26:14,432 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-29 20:26:14,433 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 20:26:14,433 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 20:26:14,434 INFO L87 Difference]: Start difference. First operand 31 states and 42 transitions. Second operand 4 states. [2020-11-29 20:26:14,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:26:14,516 INFO L93 Difference]: Finished difference Result 52 states and 69 transitions. [2020-11-29 20:26:14,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 20:26:14,517 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2020-11-29 20:26:14,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:26:14,518 INFO L225 Difference]: With dead ends: 52 [2020-11-29 20:26:14,518 INFO L226 Difference]: Without dead ends: 26 [2020-11-29 20:26:14,519 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 22 SyntacticMatches, 2 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 20:26:14,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-11-29 20:26:14,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2020-11-29 20:26:14,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-11-29 20:26:14,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 32 transitions. [2020-11-29 20:26:14,524 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 32 transitions. Word has length 14 [2020-11-29 20:26:14,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:26:14,525 INFO L481 AbstractCegarLoop]: Abstraction has 26 states and 32 transitions. [2020-11-29 20:26:14,525 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 20:26:14,525 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 32 transitions. [2020-11-29 20:26:14,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-11-29 20:26:14,526 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:26:14,526 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 20:26:14,739 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-11-29 20:26:14,739 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 20:26:14,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:26:14,740 INFO L82 PathProgramCache]: Analyzing trace with hash 1012446717, now seen corresponding path program 1 times [2020-11-29 20:26:14,741 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-29 20:26:14,741 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [994478769] [2020-11-29 20:26:14,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_05ac2faa-ee59-4888-9458-3ae4afd9a78a/bin/uautomizer/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 20:26:14,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:26:14,883 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 3 conjunts are in the unsatisfiable core [2020-11-29 20:26:14,884 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 20:26:14,903 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 20:26:14,904 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-29 20:26:14,937 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 20:26:14,937 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [994478769] [2020-11-29 20:26:14,938 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-29 20:26:14,938 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2020-11-29 20:26:14,938 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1815795156] [2020-11-29 20:26:14,939 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-29 20:26:14,939 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-29 20:26:14,940 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-29 20:26:14,940 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-29 20:26:14,940 INFO L87 Difference]: Start difference. First operand 26 states and 32 transitions. Second operand 6 states. [2020-11-29 20:26:15,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:26:15,048 INFO L93 Difference]: Finished difference Result 61 states and 71 transitions. [2020-11-29 20:26:15,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-29 20:26:15,051 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 16 [2020-11-29 20:26:15,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:26:15,053 INFO L225 Difference]: With dead ends: 61 [2020-11-29 20:26:15,053 INFO L226 Difference]: Without dead ends: 52 [2020-11-29 20:26:15,054 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 20:26:15,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-11-29 20:26:15,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 28. [2020-11-29 20:26:15,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-11-29 20:26:15,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 34 transitions. [2020-11-29 20:26:15,062 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 34 transitions. Word has length 16 [2020-11-29 20:26:15,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:26:15,063 INFO L481 AbstractCegarLoop]: Abstraction has 28 states and 34 transitions. [2020-11-29 20:26:15,063 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-29 20:26:15,063 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 34 transitions. [2020-11-29 20:26:15,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-11-29 20:26:15,064 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:26:15,064 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 20:26:15,265 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2020-11-29 20:26:15,268 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 20:26:15,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:26:15,269 INFO L82 PathProgramCache]: Analyzing trace with hash -414082333, now seen corresponding path program 1 times [2020-11-29 20:26:15,269 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-29 20:26:15,270 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1871962037] [2020-11-29 20:26:15,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_05ac2faa-ee59-4888-9458-3ae4afd9a78a/bin/uautomizer/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 20:26:15,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:26:15,375 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 7 conjunts are in the unsatisfiable core [2020-11-29 20:26:15,377 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 20:26:15,414 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 20:26:15,414 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-29 20:26:15,456 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 20:26:15,457 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1871962037] [2020-11-29 20:26:15,457 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-29 20:26:15,457 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2020-11-29 20:26:15,457 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [283616499] [2020-11-29 20:26:15,458 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 20:26:15,458 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-29 20:26:15,459 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 20:26:15,459 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-29 20:26:15,459 INFO L87 Difference]: Start difference. First operand 28 states and 34 transitions. Second operand 4 states. [2020-11-29 20:26:15,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:26:15,481 INFO L93 Difference]: Finished difference Result 38 states and 44 transitions. [2020-11-29 20:26:15,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-29 20:26:15,485 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 18 [2020-11-29 20:26:15,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:26:15,486 INFO L225 Difference]: With dead ends: 38 [2020-11-29 20:26:15,486 INFO L226 Difference]: Without dead ends: 28 [2020-11-29 20:26:15,486 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 30 SyntacticMatches, 2 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-29 20:26:15,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-11-29 20:26:15,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2020-11-29 20:26:15,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-11-29 20:26:15,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 33 transitions. [2020-11-29 20:26:15,492 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 33 transitions. Word has length 18 [2020-11-29 20:26:15,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:26:15,492 INFO L481 AbstractCegarLoop]: Abstraction has 28 states and 33 transitions. [2020-11-29 20:26:15,492 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 20:26:15,493 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 33 transitions. [2020-11-29 20:26:15,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-11-29 20:26:15,493 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:26:15,494 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 20:26:15,694 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 mathsat -unsat_core_generation=3 [2020-11-29 20:26:15,695 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 20:26:15,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:26:15,695 INFO L82 PathProgramCache]: Analyzing trace with hash -356824031, now seen corresponding path program 1 times [2020-11-29 20:26:15,696 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-29 20:26:15,696 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [332841701] [2020-11-29 20:26:15,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_05ac2faa-ee59-4888-9458-3ae4afd9a78a/bin/uautomizer/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 20:26:15,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:26:15,792 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 8 conjunts are in the unsatisfiable core [2020-11-29 20:26:15,794 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 20:26:15,868 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 20:26:15,868 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-29 20:26:15,929 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 20:26:15,929 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [332841701] [2020-11-29 20:26:15,929 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-29 20:26:15,929 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 9 [2020-11-29 20:26:15,929 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [365311035] [2020-11-29 20:26:15,930 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-11-29 20:26:15,930 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-29 20:26:15,931 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-11-29 20:26:15,931 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-11-29 20:26:15,931 INFO L87 Difference]: Start difference. First operand 28 states and 33 transitions. Second operand 9 states. [2020-11-29 20:26:16,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:26:16,074 INFO L93 Difference]: Finished difference Result 40 states and 44 transitions. [2020-11-29 20:26:16,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-29 20:26:16,075 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 18 [2020-11-29 20:26:16,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:26:16,076 INFO L225 Difference]: With dead ends: 40 [2020-11-29 20:26:16,076 INFO L226 Difference]: Without dead ends: 37 [2020-11-29 20:26:16,077 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 26 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2020-11-29 20:26:16,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-11-29 20:26:16,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 30. [2020-11-29 20:26:16,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-11-29 20:26:16,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 35 transitions. [2020-11-29 20:26:16,083 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 35 transitions. Word has length 18 [2020-11-29 20:26:16,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:26:16,084 INFO L481 AbstractCegarLoop]: Abstraction has 30 states and 35 transitions. [2020-11-29 20:26:16,084 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-11-29 20:26:16,084 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 35 transitions. [2020-11-29 20:26:16,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-11-29 20:26:16,085 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:26:16,085 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 20:26:16,285 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 mathsat -unsat_core_generation=3 [2020-11-29 20:26:16,285 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 20:26:16,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:26:16,286 INFO L82 PathProgramCache]: Analyzing trace with hash -208358251, now seen corresponding path program 1 times [2020-11-29 20:26:16,287 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-29 20:26:16,287 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1418489072] [2020-11-29 20:26:16,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_05ac2faa-ee59-4888-9458-3ae4afd9a78a/bin/uautomizer/mathsat Starting monitored process 8 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with mathsat -unsat_core_generation=3 [2020-11-29 20:26:16,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:26:16,393 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 9 conjunts are in the unsatisfiable core [2020-11-29 20:26:16,395 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 20:26:16,429 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 20:26:16,430 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-29 20:26:16,465 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 20:26:16,466 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1418489072] [2020-11-29 20:26:16,466 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-29 20:26:16,466 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2020-11-29 20:26:16,466 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1417881504] [2020-11-29 20:26:16,467 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-29 20:26:16,467 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-29 20:26:16,468 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-29 20:26:16,468 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-29 20:26:16,468 INFO L87 Difference]: Start difference. First operand 30 states and 35 transitions. Second operand 5 states. [2020-11-29 20:26:16,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:26:16,543 INFO L93 Difference]: Finished difference Result 43 states and 47 transitions. [2020-11-29 20:26:16,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-29 20:26:16,544 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 19 [2020-11-29 20:26:16,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:26:16,545 INFO L225 Difference]: With dead ends: 43 [2020-11-29 20:26:16,545 INFO L226 Difference]: Without dead ends: 23 [2020-11-29 20:26:16,546 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 31 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-11-29 20:26:16,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-11-29 20:26:16,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2020-11-29 20:26:16,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-11-29 20:26:16,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 22 transitions. [2020-11-29 20:26:16,551 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 22 transitions. Word has length 19 [2020-11-29 20:26:16,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:26:16,551 INFO L481 AbstractCegarLoop]: Abstraction has 23 states and 22 transitions. [2020-11-29 20:26:16,551 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-29 20:26:16,551 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 22 transitions. [2020-11-29 20:26:16,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-11-29 20:26:16,552 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:26:16,552 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 20:26:16,762 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 mathsat -unsat_core_generation=3 [2020-11-29 20:26:16,763 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 20:26:16,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:26:16,763 INFO L82 PathProgramCache]: Analyzing trace with hash -1524231306, now seen corresponding path program 1 times [2020-11-29 20:26:16,764 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-29 20:26:16,764 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2004166906] [2020-11-29 20:26:16,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_05ac2faa-ee59-4888-9458-3ae4afd9a78a/bin/uautomizer/mathsat Starting monitored process 9 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with mathsat -unsat_core_generation=3 [2020-11-29 20:26:16,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:26:16,912 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 15 conjunts are in the unsatisfiable core [2020-11-29 20:26:16,914 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 20:26:16,994 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 20:26:17,047 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 20:26:17,048 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-29 20:26:17,466 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 20:26:17,467 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2004166906] [2020-11-29 20:26:17,467 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-29 20:26:17,468 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10, 10] imperfect sequences [] total 16 [2020-11-29 20:26:17,468 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1076747120] [2020-11-29 20:26:17,468 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-11-29 20:26:17,469 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-29 20:26:17,469 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-11-29 20:26:17,470 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=205, Unknown=0, NotChecked=0, Total=240 [2020-11-29 20:26:17,470 INFO L87 Difference]: Start difference. First operand 23 states and 22 transitions. Second operand 16 states. [2020-11-29 20:26:17,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:26:17,816 INFO L93 Difference]: Finished difference Result 23 states and 22 transitions. [2020-11-29 20:26:17,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-29 20:26:17,826 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 22 [2020-11-29 20:26:17,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:26:17,826 INFO L225 Difference]: With dead ends: 23 [2020-11-29 20:26:17,827 INFO L226 Difference]: Without dead ends: 0 [2020-11-29 20:26:17,828 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=104, Invalid=358, Unknown=0, NotChecked=0, Total=462 [2020-11-29 20:26:17,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-29 20:26:17,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-29 20:26:17,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-29 20:26:17,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-29 20:26:17,828 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 22 [2020-11-29 20:26:17,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:26:17,829 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-29 20:26:17,829 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-11-29 20:26:17,829 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-29 20:26:17,829 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-29 20:26:18,035 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 mathsat -unsat_core_generation=3 [2020-11-29 20:26:18,037 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-29 20:26:18,397 INFO L274 CegarLoopResult]: For program point L3(line 3) no Hoare annotation was computed. [2020-11-29 20:26:18,398 INFO L274 CegarLoopResult]: For program point L3-1(line 3) no Hoare annotation was computed. [2020-11-29 20:26:18,398 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-11-29 20:26:18,398 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-11-29 20:26:18,398 INFO L274 CegarLoopResult]: For program point L28(lines 28 34) no Hoare annotation was computed. [2020-11-29 20:26:18,398 INFO L274 CegarLoopResult]: For program point L28-1(lines 28 34) no Hoare annotation was computed. [2020-11-29 20:26:18,398 INFO L274 CegarLoopResult]: For program point L71(line 71) no Hoare annotation was computed. [2020-11-29 20:26:18,398 INFO L274 CegarLoopResult]: For program point L38(lines 38 39) no Hoare annotation was computed. [2020-11-29 20:26:18,398 INFO L274 CegarLoopResult]: For program point L71-2(lines 71 74) no Hoare annotation was computed. [2020-11-29 20:26:18,399 INFO L270 CegarLoopResult]: At program point L55(lines 46 56) the Hoare annotation is: (let ((.cse0 (fp.neg (_ +zero 8 24)))) (and |ULTIMATE.start_main_#t~short16| (= (bvadd |ULTIMATE.start___signbit_float_#res| (_ bv4294967295 32)) (_ bv0 32)) (= ULTIMATE.start_fmin_float_~x (_ +zero 8 24)) (= |ULTIMATE.start_fmin_float_#res| .cse0) (= (fp ((_ extract 31 31) ULTIMATE.start___fpclassify_float_~w~0) ((_ extract 30 23) ULTIMATE.start___fpclassify_float_~w~0) ((_ extract 22 0) ULTIMATE.start___fpclassify_float_~w~0)) .cse0) (= .cse0 ULTIMATE.start___signbit_float_~x) (= ULTIMATE.start___fpclassify_float_~x .cse0) (= .cse0 ULTIMATE.start_main_~res~0) (= ULTIMATE.start_fmin_float_~y .cse0) (= .cse0 (fp ((_ extract 31 31) ULTIMATE.start___signbit_float_~w~1) ((_ extract 30 23) ULTIMATE.start___signbit_float_~w~1) ((_ extract 22 0) ULTIMATE.start___signbit_float_~w~1))))) [2020-11-29 20:26:18,399 INFO L274 CegarLoopResult]: For program point L31(lines 31 34) no Hoare annotation was computed. [2020-11-29 20:26:18,399 INFO L274 CegarLoopResult]: For program point L31-1(lines 31 34) no Hoare annotation was computed. [2020-11-29 20:26:18,399 INFO L274 CegarLoopResult]: For program point L40(lines 40 41) no Hoare annotation was computed. [2020-11-29 20:26:18,399 INFO L274 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-11-29 20:26:18,399 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 3) no Hoare annotation was computed. [2020-11-29 20:26:18,399 INFO L274 CegarLoopResult]: For program point L49-1(lines 49 53) no Hoare annotation was computed. [2020-11-29 20:26:18,400 INFO L270 CegarLoopResult]: At program point L49-2(lines 49 53) the Hoare annotation is: (let ((.cse0 (fp.neg (_ +zero 8 24)))) (and |ULTIMATE.start_main_#t~short16| (= ULTIMATE.start_fmin_float_~x (_ +zero 8 24)) (= |ULTIMATE.start_fmin_float_#res| .cse0) (= (fp ((_ extract 31 31) ULTIMATE.start___fpclassify_float_~w~0) ((_ extract 30 23) ULTIMATE.start___fpclassify_float_~w~0) ((_ extract 22 0) ULTIMATE.start___fpclassify_float_~w~0)) .cse0) (= .cse0 ULTIMATE.start___signbit_float_~x) (= ULTIMATE.start___fpclassify_float_~x .cse0) (= .cse0 ULTIMATE.start_main_~res~0) (= ULTIMATE.start_fmin_float_~y .cse0))) [2020-11-29 20:26:18,400 INFO L274 CegarLoopResult]: For program point L49-3(lines 49 53) no Hoare annotation was computed. [2020-11-29 20:26:18,400 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-29 20:26:18,400 INFO L274 CegarLoopResult]: For program point L25(lines 25 34) no Hoare annotation was computed. [2020-11-29 20:26:18,405 INFO L274 CegarLoopResult]: For program point L25-1(lines 25 34) no Hoare annotation was computed. [2020-11-29 20:26:18,405 INFO L274 CegarLoopResult]: For program point L17-1(lines 17 21) no Hoare annotation was computed. [2020-11-29 20:26:18,406 INFO L270 CegarLoopResult]: At program point L17-2(lines 17 21) the Hoare annotation is: (and (= ULTIMATE.start_fmin_float_~x (_ +zero 8 24)) (= ULTIMATE.start_fmin_float_~y (fp.neg (_ +zero 8 24))) (= (_ +zero 8 24) ULTIMATE.start___fpclassify_float_~x)) [2020-11-29 20:26:18,407 INFO L274 CegarLoopResult]: For program point L17-3(lines 14 35) no Hoare annotation was computed. [2020-11-29 20:26:18,407 INFO L274 CegarLoopResult]: For program point L17-5(lines 17 21) no Hoare annotation was computed. [2020-11-29 20:26:18,407 INFO L270 CegarLoopResult]: At program point L17-6(lines 17 21) the Hoare annotation is: (let ((.cse0 (fp.neg (_ +zero 8 24)))) (and (= ULTIMATE.start_fmin_float_~x (_ +zero 8 24)) (= ULTIMATE.start___fpclassify_float_~x .cse0) (= ULTIMATE.start_fmin_float_~y .cse0))) [2020-11-29 20:26:18,407 INFO L274 CegarLoopResult]: For program point L17-7(lines 14 35) no Hoare annotation was computed. [2020-11-29 20:26:18,407 INFO L270 CegarLoopResult]: At program point L34(lines 14 35) the Hoare annotation is: (and (= ULTIMATE.start_fmin_float_~x (_ +zero 8 24)) (= ULTIMATE.start_fmin_float_~y (fp.neg (_ +zero 8 24))) (= (fp ((_ extract 31 31) ULTIMATE.start___fpclassify_float_~w~0) ((_ extract 30 23) ULTIMATE.start___fpclassify_float_~w~0) ((_ extract 22 0) ULTIMATE.start___fpclassify_float_~w~0)) (_ +zero 8 24)) (= (_ bv2 32) |ULTIMATE.start___fpclassify_float_#res|) (= (_ +zero 8 24) ULTIMATE.start___fpclassify_float_~x)) [2020-11-29 20:26:18,408 INFO L270 CegarLoopResult]: At program point L34-1(lines 14 35) the Hoare annotation is: (let ((.cse0 (fp.neg (_ +zero 8 24)))) (and (= ULTIMATE.start_fmin_float_~x (_ +zero 8 24)) (not (= (_ bv0 32) |ULTIMATE.start___fpclassify_float_#res|)) (= (fp ((_ extract 31 31) ULTIMATE.start___fpclassify_float_~w~0) ((_ extract 30 23) ULTIMATE.start___fpclassify_float_~w~0) ((_ extract 22 0) ULTIMATE.start___fpclassify_float_~w~0)) .cse0) (= ULTIMATE.start___fpclassify_float_~x .cse0) (= ULTIMATE.start_fmin_float_~y .cse0))) [2020-11-29 20:26:18,408 INFO L277 CegarLoopResult]: At program point L76(lines 58 77) the Hoare annotation is: true [2020-11-29 20:26:18,408 INFO L274 CegarLoopResult]: For program point L43(line 43) no Hoare annotation was computed. [2020-11-29 20:26:18,409 INFO L274 CegarLoopResult]: For program point L43-2(line 43) no Hoare annotation was computed. [2020-11-29 20:26:18,409 INFO L270 CegarLoopResult]: At program point L43-3(lines 37 44) the Hoare annotation is: (let ((.cse0 (fp.neg (_ +zero 8 24)))) (and (= ULTIMATE.start_fmin_float_~x (_ +zero 8 24)) (= |ULTIMATE.start_fmin_float_#res| .cse0) (= (fp ((_ extract 31 31) ULTIMATE.start___fpclassify_float_~w~0) ((_ extract 30 23) ULTIMATE.start___fpclassify_float_~w~0) ((_ extract 22 0) ULTIMATE.start___fpclassify_float_~w~0)) .cse0) (= ULTIMATE.start___fpclassify_float_~x .cse0) (= ULTIMATE.start_fmin_float_~y .cse0))) [2020-11-29 20:26:18,452 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.11 08:26:18 BoogieIcfgContainer [2020-11-29 20:26:18,455 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-29 20:26:18,456 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-29 20:26:18,456 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-29 20:26:18,456 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-29 20:26:18,457 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 08:26:12" (3/4) ... [2020-11-29 20:26:18,460 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-29 20:26:18,478 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 17 nodes and edges [2020-11-29 20:26:18,479 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2020-11-29 20:26:18,479 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2020-11-29 20:26:18,480 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-29 20:26:18,512 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((x == ~Pluszero~LONGDOUBLE() && y == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]) == ~Pluszero~LONGDOUBLE()) && 2bv32 == \result) && ~Pluszero~LONGDOUBLE() == x [2020-11-29 20:26:18,512 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((x == ~Pluszero~LONGDOUBLE() && \result == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]) == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && x == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && y == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) [2020-11-29 20:26:18,514 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((((aux-res == -0.0f && __signbit_float(res) == 1-aux && x == ~Pluszero~LONGDOUBLE()) && \result == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]) == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) == x) && x == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) == res) && y == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) [2020-11-29 20:26:18,514 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((x == ~Pluszero~LONGDOUBLE() && !(0bv32 == \result)) && ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]) == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && x == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && y == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) [2020-11-29 20:26:18,516 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((((((aux-res == -0.0f && __signbit_float(res) == 1-aux && ~bvadd64(\result, 4294967295bv32) == 0bv32) && x == ~Pluszero~LONGDOUBLE()) && \result == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]) == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) == x) && x == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) == res) && y == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) == ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]) [2020-11-29 20:26:18,575 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_05ac2faa-ee59-4888-9458-3ae4afd9a78a/bin/uautomizer/witness.graphml [2020-11-29 20:26:18,576 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-29 20:26:18,578 INFO L168 Benchmark]: Toolchain (without parser) took 7043.91 ms. Allocated memory was 71.3 MB in the beginning and 94.4 MB in the end (delta: 23.1 MB). Free memory was 53.9 MB in the beginning and 40.5 MB in the end (delta: 13.4 MB). Peak memory consumption was 35.0 MB. Max. memory is 16.1 GB. [2020-11-29 20:26:18,579 INFO L168 Benchmark]: CDTParser took 0.34 ms. Allocated memory is still 71.3 MB. Free memory was 52.4 MB in the beginning and 52.3 MB in the end (delta: 54.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 20:26:18,580 INFO L168 Benchmark]: CACSL2BoogieTranslator took 329.92 ms. Allocated memory is still 71.3 MB. Free memory was 53.6 MB in the beginning and 53.7 MB in the end (delta: -60.8 kB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-29 20:26:18,581 INFO L168 Benchmark]: Boogie Procedure Inliner took 52.82 ms. Allocated memory is still 71.3 MB. Free memory was 53.7 MB in the beginning and 51.7 MB in the end (delta: 1.9 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 20:26:18,581 INFO L168 Benchmark]: Boogie Preprocessor took 44.48 ms. Allocated memory is still 71.3 MB. Free memory was 51.7 MB in the beginning and 50.1 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 20:26:18,582 INFO L168 Benchmark]: RCFGBuilder took 910.80 ms. Allocated memory is still 71.3 MB. Free memory was 50.1 MB in the beginning and 51.7 MB in the end (delta: -1.5 MB). Peak memory consumption was 22.4 MB. Max. memory is 16.1 GB. [2020-11-29 20:26:18,583 INFO L168 Benchmark]: TraceAbstraction took 5572.52 ms. Allocated memory was 71.3 MB in the beginning and 94.4 MB in the end (delta: 23.1 MB). Free memory was 51.3 MB in the beginning and 44.7 MB in the end (delta: 6.6 MB). Peak memory consumption was 28.5 MB. Max. memory is 16.1 GB. [2020-11-29 20:26:18,583 INFO L168 Benchmark]: Witness Printer took 120.02 ms. Allocated memory is still 94.4 MB. Free memory was 44.7 MB in the beginning and 40.5 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-29 20:26:18,587 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34 ms. Allocated memory is still 71.3 MB. Free memory was 52.4 MB in the beginning and 52.3 MB in the end (delta: 54.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 329.92 ms. Allocated memory is still 71.3 MB. Free memory was 53.6 MB in the beginning and 53.7 MB in the end (delta: -60.8 kB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 52.82 ms. Allocated memory is still 71.3 MB. Free memory was 53.7 MB in the beginning and 51.7 MB in the end (delta: 1.9 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 44.48 ms. Allocated memory is still 71.3 MB. Free memory was 51.7 MB in the beginning and 50.1 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 910.80 ms. Allocated memory is still 71.3 MB. Free memory was 50.1 MB in the beginning and 51.7 MB in the end (delta: -1.5 MB). Peak memory consumption was 22.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 5572.52 ms. Allocated memory was 71.3 MB in the beginning and 94.4 MB in the end (delta: 23.1 MB). Free memory was 51.3 MB in the beginning and 44.7 MB in the end (delta: 6.6 MB). Peak memory consumption was 28.5 MB. Max. memory is 16.1 GB. * Witness Printer took 120.02 ms. Allocated memory is still 94.4 MB. Free memory was 44.7 MB in the beginning and 40.5 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.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: 17]: Loop Invariant Derived loop invariant: (x == ~Pluszero~LONGDOUBLE() && y == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && ~Pluszero~LONGDOUBLE() == x - InvariantResult [Line: 49]: Loop Invariant Derived loop invariant: ((((((aux-res == -0.0f && __signbit_float(res) == 1-aux && x == ~Pluszero~LONGDOUBLE()) && \result == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]) == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) == x) && x == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) == res) && y == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: (x == ~Pluszero~LONGDOUBLE() && x == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && y == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: (((x == ~Pluszero~LONGDOUBLE() && !(0bv32 == \result)) && ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]) == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && x == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && y == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) - InvariantResult [Line: 58]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 46]: Loop Invariant Derived loop invariant: ((((((((aux-res == -0.0f && __signbit_float(res) == 1-aux && ~bvadd64(\result, 4294967295bv32) == 0bv32) && x == ~Pluszero~LONGDOUBLE()) && \result == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]) == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) == x) && x == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) == res) && y == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) == ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]) - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: (((x == ~Pluszero~LONGDOUBLE() && y == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]) == ~Pluszero~LONGDOUBLE()) && 2bv32 == \result) && ~Pluszero~LONGDOUBLE() == x - InvariantResult [Line: 37]: Loop Invariant Derived loop invariant: (((x == ~Pluszero~LONGDOUBLE() && \result == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]) == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && x == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && y == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 33 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 5.0s, OverallIterations: 8, TraceHistogramMax: 1, AutomataDifference: 1.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.3s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 234 SDtfs, 204 SDslu, 399 SDs, 0 SdLazy, 150 SolverSat, 25 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 257 GetRequests, 197 SyntacticMatches, 7 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 1.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=33occurred 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, 8 MinimizatonAttempts, 59 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 8 LocationsWithAnnotation, 8 PreInvPairs, 16 NumberOfFragments, 184 HoareAnnotationTreeSize, 8 FomulaSimplifications, 48 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 8 FomulaSimplificationsInter, 4 FormulaSimplificationTreeSizeReductionInter, 0.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 1.1s InterpolantComputationTime, 128 NumberOfCodeBlocks, 128 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 240 ConstructedInterpolants, 15 QuantifiedInterpolants, 16152 SizeOfPredicates, 38 NumberOfNonLiveVariables, 519 ConjunctsInSsa, 55 ConjunctsInUnsatCore, 16 InterpolantComputations, 16 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...