./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/float_req_bl_1231.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 69874e26 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_cfcd9a63-28cb-4621-b570-8c9c2ee9e7bc/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_cfcd9a63-28cb-4621-b570-8c9c2ee9e7bc/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_cfcd9a63-28cb-4621-b570-8c9c2ee9e7bc/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_cfcd9a63-28cb-4621-b570-8c9c2ee9e7bc/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1231.c -s /tmp/vcloud-vcloud-master/worker/run_dir_cfcd9a63-28cb-4621-b570-8c9c2ee9e7bc/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_cfcd9a63-28cb-4621-b570-8c9c2ee9e7bc/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 8039b1e35b9e459b273890fa707790cd9b2d1812 .............................................................................................................................................................................................................................................................................................................................................................................................................................................................. 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_cfcd9a63-28cb-4621-b570-8c9c2ee9e7bc/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_cfcd9a63-28cb-4621-b570-8c9c2ee9e7bc/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_cfcd9a63-28cb-4621-b570-8c9c2ee9e7bc/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_cfcd9a63-28cb-4621-b570-8c9c2ee9e7bc/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1231.c -s /tmp/vcloud-vcloud-master/worker/run_dir_cfcd9a63-28cb-4621-b570-8c9c2ee9e7bc/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_cfcd9a63-28cb-4621-b570-8c9c2ee9e7bc/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 8039b1e35b9e459b273890fa707790cd9b2d1812 ....................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-69874e2 [2020-12-01 15:38:01,335 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-01 15:38:01,338 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-01 15:38:01,396 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-01 15:38:01,397 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-01 15:38:01,404 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-01 15:38:01,407 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-01 15:38:01,418 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-01 15:38:01,422 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-01 15:38:01,428 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-01 15:38:01,430 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-01 15:38:01,432 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-01 15:38:01,433 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-01 15:38:01,437 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-01 15:38:01,438 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-01 15:38:01,440 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-01 15:38:01,442 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-01 15:38:01,446 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-01 15:38:01,450 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-01 15:38:01,457 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-01 15:38:01,460 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-01 15:38:01,461 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-01 15:38:01,464 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-01 15:38:01,465 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-01 15:38:01,471 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-01 15:38:01,471 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-01 15:38:01,472 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-01 15:38:01,474 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-01 15:38:01,475 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-01 15:38:01,476 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-01 15:38:01,477 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-01 15:38:01,478 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-01 15:38:01,480 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-01 15:38:01,482 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-01 15:38:01,483 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-01 15:38:01,484 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-01 15:38:01,485 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-01 15:38:01,485 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-01 15:38:01,485 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-01 15:38:01,487 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-01 15:38:01,487 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-01 15:38:01,490 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_cfcd9a63-28cb-4621-b570-8c9c2ee9e7bc/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-12-01 15:38:01,540 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-01 15:38:01,540 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-01 15:38:01,542 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-01 15:38:01,543 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-01 15:38:01,543 INFO L138 SettingsManager]: * Use SBE=true [2020-12-01 15:38:01,543 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-01 15:38:01,544 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-01 15:38:01,544 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-01 15:38:01,544 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-01 15:38:01,544 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-01 15:38:01,546 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-01 15:38:01,546 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-01 15:38:01,546 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-01 15:38:01,546 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-01 15:38:01,547 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-01 15:38:01,547 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-01 15:38:01,547 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-01 15:38:01,548 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-01 15:38:01,548 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-01 15:38:01,548 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-12-01 15:38:01,548 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-01 15:38:01,549 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-01 15:38:01,549 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-01 15:38:01,549 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-01 15:38:01,549 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-01 15:38:01,550 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-01 15:38:01,550 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-01 15:38:01,550 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-01 15:38:01,550 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-01 15:38:01,551 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_cfcd9a63-28cb-4621-b570-8c9c2ee9e7bc/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_cfcd9a63-28cb-4621-b570-8c9c2ee9e7bc/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8039b1e35b9e459b273890fa707790cd9b2d1812 [2020-12-01 15:38:01,930 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-01 15:38:01,982 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-01 15:38:01,987 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-01 15:38:01,988 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-01 15:38:01,990 INFO L275 PluginConnector]: CDTParser initialized [2020-12-01 15:38:01,991 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_cfcd9a63-28cb-4621-b570-8c9c2ee9e7bc/bin/uautomizer/../../sv-benchmarks/c/float-newlib/float_req_bl_1231.c [2020-12-01 15:38:02,108 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_cfcd9a63-28cb-4621-b570-8c9c2ee9e7bc/bin/uautomizer/data/d28f0d874/10554a95793449e4a4b4fbba8ceb39d8/FLAG9d378cd7e [2020-12-01 15:38:02,681 INFO L306 CDTParser]: Found 1 translation units. [2020-12-01 15:38:02,685 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_cfcd9a63-28cb-4621-b570-8c9c2ee9e7bc/sv-benchmarks/c/float-newlib/float_req_bl_1231.c [2020-12-01 15:38:02,699 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_cfcd9a63-28cb-4621-b570-8c9c2ee9e7bc/bin/uautomizer/data/d28f0d874/10554a95793449e4a4b4fbba8ceb39d8/FLAG9d378cd7e [2020-12-01 15:38:02,999 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_cfcd9a63-28cb-4621-b570-8c9c2ee9e7bc/bin/uautomizer/data/d28f0d874/10554a95793449e4a4b4fbba8ceb39d8 [2020-12-01 15:38:03,001 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-01 15:38:03,003 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-01 15:38:03,005 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-01 15:38:03,005 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-01 15:38:03,009 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-01 15:38:03,010 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 03:38:03" (1/1) ... [2020-12-01 15:38:03,012 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2431ae9c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:38:03, skipping insertion in model container [2020-12-01 15:38:03,012 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 03:38:03" (1/1) ... [2020-12-01 15:38:03,020 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-01 15:38:03,036 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-01 15:38:03,210 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-01 15:38:03,220 INFO L203 MainTranslator]: Completed pre-run [2020-12-01 15:38:03,248 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-01 15:38:03,266 INFO L208 MainTranslator]: Completed translation [2020-12-01 15:38:03,266 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:38:03 WrapperNode [2020-12-01 15:38:03,267 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-01 15:38:03,268 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-01 15:38:03,268 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-01 15:38:03,268 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-01 15:38:03,277 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:38:03" (1/1) ... [2020-12-01 15:38:03,287 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:38:03" (1/1) ... [2020-12-01 15:38:03,323 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-01 15:38:03,324 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-01 15:38:03,324 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-01 15:38:03,324 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-01 15:38:03,334 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:38:03" (1/1) ... [2020-12-01 15:38:03,334 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:38:03" (1/1) ... [2020-12-01 15:38:03,338 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:38:03" (1/1) ... [2020-12-01 15:38:03,339 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:38:03" (1/1) ... [2020-12-01 15:38:03,347 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:38:03" (1/1) ... [2020-12-01 15:38:03,352 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:38:03" (1/1) ... [2020-12-01 15:38:03,355 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:38:03" (1/1) ... [2020-12-01 15:38:03,358 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-01 15:38:03,359 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-01 15:38:03,359 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-01 15:38:03,360 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-01 15:38:03,361 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:38:03" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_cfcd9a63-28cb-4621-b570-8c9c2ee9e7bc/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 [2020-12-01 15:38:03,430 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-01 15:38:03,430 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-01 15:38:03,430 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-12-01 15:38:03,431 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-01 15:38:03,431 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-01 15:38:03,431 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-12-01 15:38:03,431 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-01 15:38:04,063 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-01 15:38:04,063 INFO L298 CfgBuilder]: Removed 34 assume(true) statements. [2020-12-01 15:38:04,065 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 03:38:04 BoogieIcfgContainer [2020-12-01 15:38:04,065 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-01 15:38:04,066 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-01 15:38:04,067 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-01 15:38:04,070 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-01 15:38:04,071 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.12 03:38:03" (1/3) ... [2020-12-01 15:38:04,071 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d03bfb8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.12 03:38:04, skipping insertion in model container [2020-12-01 15:38:04,086 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:38:03" (2/3) ... [2020-12-01 15:38:04,087 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d03bfb8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.12 03:38:04, skipping insertion in model container [2020-12-01 15:38:04,087 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 03:38:04" (3/3) ... [2020-12-01 15:38:04,088 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_1231.c [2020-12-01 15:38:04,119 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-01 15:38:04,122 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-12-01 15:38:04,134 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-12-01 15:38:04,182 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-01 15:38:04,185 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-01 15:38:04,185 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-01 15:38:04,186 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-01 15:38:04,186 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-01 15:38:04,186 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-01 15:38:04,186 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-01 15:38:04,186 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-01 15:38:04,208 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states. [2020-12-01 15:38:04,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-12-01 15:38:04,216 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:38:04,217 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 15:38:04,219 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 15:38:04,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:38:04,226 INFO L82 PathProgramCache]: Analyzing trace with hash 1204154757, now seen corresponding path program 1 times [2020-12-01 15:38:04,236 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:38:04,237 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1127182717] [2020-12-01 15:38:04,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:38:04,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:38:04,491 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 15:38:04,492 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1127182717] [2020-12-01 15:38:04,492 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 15:38:04,493 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-01 15:38:04,494 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1968133218] [2020-12-01 15:38:04,502 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-01 15:38:04,502 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 15:38:04,518 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-01 15:38:04,520 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-01 15:38:04,522 INFO L87 Difference]: Start difference. First operand 49 states. Second operand 4 states. [2020-12-01 15:38:04,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:38:04,634 INFO L93 Difference]: Finished difference Result 92 states and 136 transitions. [2020-12-01 15:38:04,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-01 15:38:04,636 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 16 [2020-12-01 15:38:04,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:38:04,666 INFO L225 Difference]: With dead ends: 92 [2020-12-01 15:38:04,677 INFO L226 Difference]: Without dead ends: 50 [2020-12-01 15:38:04,680 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 [2020-12-01 15:38:04,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-12-01 15:38:04,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 45. [2020-12-01 15:38:04,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-12-01 15:38:04,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 60 transitions. [2020-12-01 15:38:04,718 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 60 transitions. Word has length 16 [2020-12-01 15:38:04,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:38:04,718 INFO L481 AbstractCegarLoop]: Abstraction has 45 states and 60 transitions. [2020-12-01 15:38:04,718 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-01 15:38:04,718 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 60 transitions. [2020-12-01 15:38:04,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-12-01 15:38:04,719 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:38:04,720 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 15:38:04,720 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-01 15:38:04,720 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 15:38:04,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:38:04,721 INFO L82 PathProgramCache]: Analyzing trace with hash 44236684, now seen corresponding path program 1 times [2020-12-01 15:38:04,721 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:38:04,722 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1615910438] [2020-12-01 15:38:04,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:38:04,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:38:04,817 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 15:38:04,817 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1615910438] [2020-12-01 15:38:04,818 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 15:38:04,818 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-01 15:38:04,818 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2143324956] [2020-12-01 15:38:04,820 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-01 15:38:04,820 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 15:38:04,821 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-01 15:38:04,821 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-01 15:38:04,821 INFO L87 Difference]: Start difference. First operand 45 states and 60 transitions. Second operand 4 states. [2020-12-01 15:38:04,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:38:04,892 INFO L93 Difference]: Finished difference Result 77 states and 97 transitions. [2020-12-01 15:38:04,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-01 15:38:04,893 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 18 [2020-12-01 15:38:04,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:38:04,895 INFO L225 Difference]: With dead ends: 77 [2020-12-01 15:38:04,895 INFO L226 Difference]: Without dead ends: 64 [2020-12-01 15:38:04,897 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 [2020-12-01 15:38:04,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2020-12-01 15:38:04,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 47. [2020-12-01 15:38:04,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-12-01 15:38:04,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 62 transitions. [2020-12-01 15:38:04,907 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 62 transitions. Word has length 18 [2020-12-01 15:38:04,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:38:04,907 INFO L481 AbstractCegarLoop]: Abstraction has 47 states and 62 transitions. [2020-12-01 15:38:04,907 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-01 15:38:04,907 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 62 transitions. [2020-12-01 15:38:04,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-12-01 15:38:04,908 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:38:04,909 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 15:38:04,909 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-01 15:38:04,909 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 15:38:04,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:38:04,910 INFO L82 PathProgramCache]: Analyzing trace with hash -674173253, now seen corresponding path program 1 times [2020-12-01 15:38:04,910 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:38:04,911 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2024053230] [2020-12-01 15:38:04,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:38:04,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:38:04,999 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 15:38:05,000 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2024053230] [2020-12-01 15:38:05,001 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 15:38:05,001 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-01 15:38:05,006 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1162952225] [2020-12-01 15:38:05,008 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-01 15:38:05,009 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 15:38:05,012 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-01 15:38:05,014 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-01 15:38:05,015 INFO L87 Difference]: Start difference. First operand 47 states and 62 transitions. Second operand 4 states. [2020-12-01 15:38:05,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:38:05,105 INFO L93 Difference]: Finished difference Result 79 states and 99 transitions. [2020-12-01 15:38:05,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-01 15:38:05,106 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 19 [2020-12-01 15:38:05,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:38:05,110 INFO L225 Difference]: With dead ends: 79 [2020-12-01 15:38:05,111 INFO L226 Difference]: Without dead ends: 66 [2020-12-01 15:38:05,112 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 [2020-12-01 15:38:05,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-12-01 15:38:05,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 47. [2020-12-01 15:38:05,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-12-01 15:38:05,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 62 transitions. [2020-12-01 15:38:05,127 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 62 transitions. Word has length 19 [2020-12-01 15:38:05,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:38:05,128 INFO L481 AbstractCegarLoop]: Abstraction has 47 states and 62 transitions. [2020-12-01 15:38:05,128 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-01 15:38:05,128 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 62 transitions. [2020-12-01 15:38:05,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-12-01 15:38:05,130 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:38:05,130 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] [2020-12-01 15:38:05,131 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-01 15:38:05,131 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 15:38:05,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:38:05,132 INFO L82 PathProgramCache]: Analyzing trace with hash -1345927737, now seen corresponding path program 1 times [2020-12-01 15:38:05,133 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:38:05,133 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1038084822] [2020-12-01 15:38:05,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:38:05,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:38:05,213 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 15:38:05,213 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1038084822] [2020-12-01 15:38:05,214 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 15:38:05,214 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-01 15:38:05,214 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [314526882] [2020-12-01 15:38:05,214 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-01 15:38:05,215 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 15:38:05,215 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-01 15:38:05,223 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-01 15:38:05,223 INFO L87 Difference]: Start difference. First operand 47 states and 62 transitions. Second operand 4 states. [2020-12-01 15:38:05,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:38:05,281 INFO L93 Difference]: Finished difference Result 81 states and 101 transitions. [2020-12-01 15:38:05,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-01 15:38:05,282 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 20 [2020-12-01 15:38:05,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:38:05,287 INFO L225 Difference]: With dead ends: 81 [2020-12-01 15:38:05,288 INFO L226 Difference]: Without dead ends: 68 [2020-12-01 15:38:05,288 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 [2020-12-01 15:38:05,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-12-01 15:38:05,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 47. [2020-12-01 15:38:05,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-12-01 15:38:05,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 62 transitions. [2020-12-01 15:38:05,313 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 62 transitions. Word has length 20 [2020-12-01 15:38:05,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:38:05,313 INFO L481 AbstractCegarLoop]: Abstraction has 47 states and 62 transitions. [2020-12-01 15:38:05,313 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-01 15:38:05,314 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 62 transitions. [2020-12-01 15:38:05,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-12-01 15:38:05,315 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:38:05,315 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] [2020-12-01 15:38:05,315 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-01 15:38:05,316 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 15:38:05,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:38:05,317 INFO L82 PathProgramCache]: Analyzing trace with hash -1380709804, now seen corresponding path program 1 times [2020-12-01 15:38:05,317 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:38:05,318 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2071321514] [2020-12-01 15:38:05,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:38:05,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:38:05,376 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 15:38:05,376 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2071321514] [2020-12-01 15:38:05,377 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 15:38:05,377 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-01 15:38:05,377 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1578267378] [2020-12-01 15:38:05,377 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-01 15:38:05,378 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 15:38:05,378 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-01 15:38:05,378 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-01 15:38:05,379 INFO L87 Difference]: Start difference. First operand 47 states and 62 transitions. Second operand 3 states. [2020-12-01 15:38:05,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:38:05,392 INFO L93 Difference]: Finished difference Result 50 states and 65 transitions. [2020-12-01 15:38:05,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-01 15:38:05,393 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 21 [2020-12-01 15:38:05,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:38:05,394 INFO L225 Difference]: With dead ends: 50 [2020-12-01 15:38:05,394 INFO L226 Difference]: Without dead ends: 48 [2020-12-01 15:38:05,395 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-01 15:38:05,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-12-01 15:38:05,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2020-12-01 15:38:05,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2020-12-01 15:38:05,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 63 transitions. [2020-12-01 15:38:05,401 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 63 transitions. Word has length 21 [2020-12-01 15:38:05,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:38:05,402 INFO L481 AbstractCegarLoop]: Abstraction has 48 states and 63 transitions. [2020-12-01 15:38:05,402 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-01 15:38:05,402 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 63 transitions. [2020-12-01 15:38:05,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-12-01 15:38:05,403 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:38:05,403 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] [2020-12-01 15:38:05,403 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-01 15:38:05,404 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 15:38:05,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:38:05,405 INFO L82 PathProgramCache]: Analyzing trace with hash 147544209, now seen corresponding path program 1 times [2020-12-01 15:38:05,405 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:38:05,405 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [901244350] [2020-12-01 15:38:05,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:38:05,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-01 15:38:05,450 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-01 15:38:05,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-01 15:38:05,479 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-01 15:38:05,507 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-12-01 15:38:05,507 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-01 15:38:05,508 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-01 15:38:05,544 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.12 03:38:05 BoogieIcfgContainer [2020-12-01 15:38:05,544 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-01 15:38:05,545 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-01 15:38:05,545 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-01 15:38:05,545 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-01 15:38:05,546 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 03:38:04" (3/4) ... [2020-12-01 15:38:05,549 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-12-01 15:38:05,550 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-01 15:38:05,552 INFO L168 Benchmark]: Toolchain (without parser) took 2547.75 ms. Allocated memory is still 92.3 MB. Free memory was 59.5 MB in the beginning and 53.7 MB in the end (delta: 5.7 MB). Peak memory consumption was 8.9 MB. Max. memory is 16.1 GB. [2020-12-01 15:38:05,553 INFO L168 Benchmark]: CDTParser took 0.30 ms. Allocated memory is still 71.3 MB. Free memory is still 48.4 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-12-01 15:38:05,553 INFO L168 Benchmark]: CACSL2BoogieTranslator took 262.19 ms. Allocated memory is still 92.3 MB. Free memory was 59.2 MB in the beginning and 48.7 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-12-01 15:38:05,554 INFO L168 Benchmark]: Boogie Procedure Inliner took 55.23 ms. Allocated memory is still 92.3 MB. Free memory was 48.7 MB in the beginning and 46.6 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-01 15:38:05,555 INFO L168 Benchmark]: Boogie Preprocessor took 34.63 ms. Allocated memory is still 92.3 MB. Free memory was 46.6 MB in the beginning and 45.0 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-01 15:38:05,556 INFO L168 Benchmark]: RCFGBuilder took 705.84 ms. Allocated memory is still 92.3 MB. Free memory was 45.0 MB in the beginning and 55.1 MB in the end (delta: -10.1 MB). Peak memory consumption was 11.5 MB. Max. memory is 16.1 GB. [2020-12-01 15:38:05,557 INFO L168 Benchmark]: TraceAbstraction took 1478.04 ms. Allocated memory is still 92.3 MB. Free memory was 54.7 MB in the beginning and 53.7 MB in the end (delta: 931.8 kB). Peak memory consumption was 3.6 MB. Max. memory is 16.1 GB. [2020-12-01 15:38:05,557 INFO L168 Benchmark]: Witness Printer took 4.83 ms. Allocated memory is still 92.3 MB. Free memory is still 53.7 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-12-01 15:38:05,561 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30 ms. Allocated memory is still 71.3 MB. Free memory is still 48.4 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 262.19 ms. Allocated memory is still 92.3 MB. Free memory was 59.2 MB in the beginning and 48.7 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 55.23 ms. Allocated memory is still 92.3 MB. Free memory was 48.7 MB in the beginning and 46.6 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 34.63 ms. Allocated memory is still 92.3 MB. Free memory was 46.6 MB in the beginning and 45.0 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 705.84 ms. Allocated memory is still 92.3 MB. Free memory was 45.0 MB in the beginning and 55.1 MB in the end (delta: -10.1 MB). Peak memory consumption was 11.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1478.04 ms. Allocated memory is still 92.3 MB. Free memory was 54.7 MB in the beginning and 53.7 MB in the end (delta: 931.8 kB). Peak memory consumption was 3.6 MB. Max. memory is 16.1 GB. * Witness Printer took 4.83 ms. Allocated memory is still 92.3 MB. Free memory is still 53.7 MB. There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 3]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 76. Possible FailurePath: [L68] float x = __VERIFIER_nondet_float(); [L69] float y = __VERIFIER_nondet_float(); [L59] return x != x; [L70] EXPR isnan_float(x) && !isnan_float(y) [L59] return x != x; [L70] EXPR isnan_float(x) && !isnan_float(y) [L70-L71] (isnan_float(x) && !isnan_float(y)) || (!isnan_float(x) && isnan_float(y)) [L70-L71] COND TRUE (isnan_float(x) && !isnan_float(y)) || (!isnan_float(x) && isnan_float(y)) [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; [L73] float res = fmin_float(x, y); [L59] return x != x; [L76] EXPR isnan_float(x) && !isnan_float(y) [L59] return x != x; [L76] EXPR isnan_float(x) && !isnan_float(y) [L76] COND TRUE isnan_float(x) && !isnan_float(y) && res != y [L3] __assert_fail("0", "float_req_bl_1231.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 49 locations, 2 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: 343 SDtfs, 79 SDslu, 503 SDs, 0 SdLazy, 88 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 23 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=49occurred 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, 62 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 116 NumberOfCodeBlocks, 116 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 89 ConstructedInterpolants, 0 QuantifiedInterpolants, 1865 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 0.2.0-69874e2 [2020-12-01 15:38:08,224 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-01 15:38:08,228 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-01 15:38:08,277 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-01 15:38:08,277 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-01 15:38:08,279 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-01 15:38:08,281 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-01 15:38:08,283 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-01 15:38:08,286 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-01 15:38:08,287 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-01 15:38:08,288 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-01 15:38:08,290 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-01 15:38:08,295 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-01 15:38:08,297 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-01 15:38:08,298 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-01 15:38:08,300 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-01 15:38:08,301 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-01 15:38:08,302 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-01 15:38:08,305 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-01 15:38:08,307 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-01 15:38:08,309 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-01 15:38:08,311 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-01 15:38:08,312 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-01 15:38:08,313 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-01 15:38:08,317 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-01 15:38:08,317 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-01 15:38:08,318 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-01 15:38:08,319 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-01 15:38:08,319 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-01 15:38:08,320 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-01 15:38:08,321 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-01 15:38:08,322 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-01 15:38:08,323 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-01 15:38:08,324 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-01 15:38:08,325 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-01 15:38:08,326 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-01 15:38:08,327 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-01 15:38:08,327 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-01 15:38:08,327 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-01 15:38:08,329 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-01 15:38:08,329 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-01 15:38:08,330 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_cfcd9a63-28cb-4621-b570-8c9c2ee9e7bc/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2020-12-01 15:38:08,359 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-01 15:38:08,359 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-01 15:38:08,361 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-01 15:38:08,361 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-01 15:38:08,361 INFO L138 SettingsManager]: * Use SBE=true [2020-12-01 15:38:08,362 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-01 15:38:08,362 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-01 15:38:08,362 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-01 15:38:08,362 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-01 15:38:08,362 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-01 15:38:08,363 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-01 15:38:08,363 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-01 15:38:08,363 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-12-01 15:38:08,363 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-12-01 15:38:08,364 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-01 15:38:08,364 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-01 15:38:08,364 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-01 15:38:08,364 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-01 15:38:08,365 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-01 15:38:08,365 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-01 15:38:08,365 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-12-01 15:38:08,365 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-01 15:38:08,366 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-01 15:38:08,366 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-01 15:38:08,366 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-01 15:38:08,366 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-01 15:38:08,367 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2020-12-01 15:38:08,367 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-12-01 15:38:08,367 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-01 15:38:08,367 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-01 15:38:08,368 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-01 15:38:08,368 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_cfcd9a63-28cb-4621-b570-8c9c2ee9e7bc/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_cfcd9a63-28cb-4621-b570-8c9c2ee9e7bc/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8039b1e35b9e459b273890fa707790cd9b2d1812 [2020-12-01 15:38:08,773 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-01 15:38:08,814 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-01 15:38:08,817 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-01 15:38:08,818 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-01 15:38:08,818 INFO L275 PluginConnector]: CDTParser initialized [2020-12-01 15:38:08,819 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_cfcd9a63-28cb-4621-b570-8c9c2ee9e7bc/bin/uautomizer/../../sv-benchmarks/c/float-newlib/float_req_bl_1231.c [2020-12-01 15:38:08,900 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_cfcd9a63-28cb-4621-b570-8c9c2ee9e7bc/bin/uautomizer/data/81c7c88c0/450b9df2f95a44b49dc97651a118754d/FLAGbe3ecd94f [2020-12-01 15:38:09,536 INFO L306 CDTParser]: Found 1 translation units. [2020-12-01 15:38:09,537 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_cfcd9a63-28cb-4621-b570-8c9c2ee9e7bc/sv-benchmarks/c/float-newlib/float_req_bl_1231.c [2020-12-01 15:38:09,545 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_cfcd9a63-28cb-4621-b570-8c9c2ee9e7bc/bin/uautomizer/data/81c7c88c0/450b9df2f95a44b49dc97651a118754d/FLAGbe3ecd94f [2020-12-01 15:38:09,914 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_cfcd9a63-28cb-4621-b570-8c9c2ee9e7bc/bin/uautomizer/data/81c7c88c0/450b9df2f95a44b49dc97651a118754d [2020-12-01 15:38:09,917 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-01 15:38:09,919 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-01 15:38:09,935 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-01 15:38:09,935 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-01 15:38:09,938 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-01 15:38:09,939 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 03:38:09" (1/1) ... [2020-12-01 15:38:09,941 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6e58dc4e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:38:09, skipping insertion in model container [2020-12-01 15:38:09,941 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 03:38:09" (1/1) ... [2020-12-01 15:38:09,949 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-01 15:38:09,975 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-01 15:38:10,167 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-01 15:38:10,182 INFO L203 MainTranslator]: Completed pre-run [2020-12-01 15:38:10,234 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-01 15:38:10,260 INFO L208 MainTranslator]: Completed translation [2020-12-01 15:38:10,261 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:38:10 WrapperNode [2020-12-01 15:38:10,261 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-01 15:38:10,262 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-01 15:38:10,262 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-01 15:38:10,263 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-01 15:38:10,271 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:38:10" (1/1) ... [2020-12-01 15:38:10,284 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:38:10" (1/1) ... [2020-12-01 15:38:10,313 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-01 15:38:10,314 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-01 15:38:10,314 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-01 15:38:10,314 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-01 15:38:10,324 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:38:10" (1/1) ... [2020-12-01 15:38:10,324 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:38:10" (1/1) ... [2020-12-01 15:38:10,330 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:38:10" (1/1) ... [2020-12-01 15:38:10,330 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:38:10" (1/1) ... [2020-12-01 15:38:10,340 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:38:10" (1/1) ... [2020-12-01 15:38:10,346 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:38:10" (1/1) ... [2020-12-01 15:38:10,349 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:38:10" (1/1) ... [2020-12-01 15:38:10,354 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-01 15:38:10,355 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-01 15:38:10,355 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-01 15:38:10,355 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-01 15:38:10,356 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:38:10" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_cfcd9a63-28cb-4621-b570-8c9c2ee9e7bc/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 [2020-12-01 15:38:10,448 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-12-01 15:38:10,449 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-01 15:38:10,449 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2020-12-01 15:38:10,449 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-01 15:38:10,450 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-01 15:38:10,450 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2020-12-01 15:38:10,450 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-01 15:38:11,170 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-01 15:38:11,170 INFO L298 CfgBuilder]: Removed 34 assume(true) statements. [2020-12-01 15:38:11,172 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 03:38:11 BoogieIcfgContainer [2020-12-01 15:38:11,172 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-01 15:38:11,174 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-01 15:38:11,174 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-01 15:38:11,178 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-01 15:38:11,178 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.12 03:38:09" (1/3) ... [2020-12-01 15:38:11,179 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@719fb744 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.12 03:38:11, skipping insertion in model container [2020-12-01 15:38:11,179 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:38:10" (2/3) ... [2020-12-01 15:38:11,180 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@719fb744 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.12 03:38:11, skipping insertion in model container [2020-12-01 15:38:11,180 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 03:38:11" (3/3) ... [2020-12-01 15:38:11,181 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_1231.c [2020-12-01 15:38:11,209 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-01 15:38:11,213 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-12-01 15:38:11,224 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-12-01 15:38:11,248 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-01 15:38:11,248 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-01 15:38:11,248 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-01 15:38:11,249 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-01 15:38:11,249 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-01 15:38:11,249 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-01 15:38:11,249 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-01 15:38:11,250 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-01 15:38:11,263 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states. [2020-12-01 15:38:11,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-12-01 15:38:11,268 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:38:11,269 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 15:38:11,270 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 15:38:11,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:38:11,275 INFO L82 PathProgramCache]: Analyzing trace with hash 1204154757, now seen corresponding path program 1 times [2020-12-01 15:38:11,287 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-12-01 15:38:11,287 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1758918176] [2020-12-01 15:38:11,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_cfcd9a63-28cb-4621-b570-8c9c2ee9e7bc/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 [2020-12-01 15:38:11,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:38:11,408 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 1 conjunts are in the unsatisfiable core [2020-12-01 15:38:11,413 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 15:38:11,448 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 15:38:11,448 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-01 15:38:11,467 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 15:38:11,468 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1758918176] [2020-12-01 15:38:11,469 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-12-01 15:38:11,469 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-12-01 15:38:11,470 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [733021350] [2020-12-01 15:38:11,475 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-01 15:38:11,476 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-12-01 15:38:11,490 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-01 15:38:11,491 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-01 15:38:11,493 INFO L87 Difference]: Start difference. First operand 49 states. Second operand 2 states. [2020-12-01 15:38:11,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:38:11,517 INFO L93 Difference]: Finished difference Result 84 states and 124 transitions. [2020-12-01 15:38:11,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-01 15:38:11,519 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 16 [2020-12-01 15:38:11,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:38:11,548 INFO L225 Difference]: With dead ends: 84 [2020-12-01 15:38:11,549 INFO L226 Difference]: Without dead ends: 43 [2020-12-01 15:38:11,552 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-01 15:38:11,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2020-12-01 15:38:11,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2020-12-01 15:38:11,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-12-01 15:38:11,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 58 transitions. [2020-12-01 15:38:11,591 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 58 transitions. Word has length 16 [2020-12-01 15:38:11,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:38:11,592 INFO L481 AbstractCegarLoop]: Abstraction has 43 states and 58 transitions. [2020-12-01 15:38:11,592 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-01 15:38:11,592 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 58 transitions. [2020-12-01 15:38:11,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-12-01 15:38:11,593 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:38:11,593 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 15:38:11,816 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-12-01 15:38:11,819 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 15:38:11,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:38:11,820 INFO L82 PathProgramCache]: Analyzing trace with hash 1262247077, now seen corresponding path program 1 times [2020-12-01 15:38:11,821 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-12-01 15:38:11,822 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1720718162] [2020-12-01 15:38:11,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_cfcd9a63-28cb-4621-b570-8c9c2ee9e7bc/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 [2020-12-01 15:38:11,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:38:11,964 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-01 15:38:11,966 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 15:38:12,021 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 15:38:12,021 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-01 15:38:12,061 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 15:38:12,061 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1720718162] [2020-12-01 15:38:12,064 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-12-01 15:38:12,064 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2020-12-01 15:38:12,064 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [769134813] [2020-12-01 15:38:12,066 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-01 15:38:12,069 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-12-01 15:38:12,069 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-01 15:38:12,070 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-01 15:38:12,070 INFO L87 Difference]: Start difference. First operand 43 states and 58 transitions. Second operand 4 states. [2020-12-01 15:38:12,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:38:12,168 INFO L93 Difference]: Finished difference Result 82 states and 111 transitions. [2020-12-01 15:38:12,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-01 15:38:12,169 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-12-01 15:38:12,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:38:12,170 INFO L225 Difference]: With dead ends: 82 [2020-12-01 15:38:12,171 INFO L226 Difference]: Without dead ends: 50 [2020-12-01 15:38:12,172 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-01 15:38:12,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-12-01 15:38:12,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 45. [2020-12-01 15:38:12,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-12-01 15:38:12,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 60 transitions. [2020-12-01 15:38:12,180 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 60 transitions. Word has length 17 [2020-12-01 15:38:12,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:38:12,181 INFO L481 AbstractCegarLoop]: Abstraction has 45 states and 60 transitions. [2020-12-01 15:38:12,181 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-01 15:38:12,181 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 60 transitions. [2020-12-01 15:38:12,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-12-01 15:38:12,182 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:38:12,182 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 15:38:12,390 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-12-01 15:38:12,390 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 15:38:12,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:38:12,391 INFO L82 PathProgramCache]: Analyzing trace with hash 44236684, now seen corresponding path program 1 times [2020-12-01 15:38:12,391 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-12-01 15:38:12,392 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1323488906] [2020-12-01 15:38:12,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_cfcd9a63-28cb-4621-b570-8c9c2ee9e7bc/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 [2020-12-01 15:38:12,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:38:12,501 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-01 15:38:12,503 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 15:38:12,540 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 15:38:12,540 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-01 15:38:12,576 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 15:38:12,577 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1323488906] [2020-12-01 15:38:12,577 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-12-01 15:38:12,577 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2020-12-01 15:38:12,578 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [214605183] [2020-12-01 15:38:12,578 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-01 15:38:12,579 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-12-01 15:38:12,580 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-01 15:38:12,580 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-12-01 15:38:12,580 INFO L87 Difference]: Start difference. First operand 45 states and 60 transitions. Second operand 6 states. [2020-12-01 15:38:12,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:38:12,692 INFO L93 Difference]: Finished difference Result 96 states and 120 transitions. [2020-12-01 15:38:12,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-01 15:38:12,693 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 18 [2020-12-01 15:38:12,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:38:12,695 INFO L225 Difference]: With dead ends: 96 [2020-12-01 15:38:12,695 INFO L226 Difference]: Without dead ends: 83 [2020-12-01 15:38:12,696 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-12-01 15:38:12,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2020-12-01 15:38:12,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 47. [2020-12-01 15:38:12,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-12-01 15:38:12,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 62 transitions. [2020-12-01 15:38:12,706 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 62 transitions. Word has length 18 [2020-12-01 15:38:12,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:38:12,706 INFO L481 AbstractCegarLoop]: Abstraction has 47 states and 62 transitions. [2020-12-01 15:38:12,707 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-01 15:38:12,707 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 62 transitions. [2020-12-01 15:38:12,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-12-01 15:38:12,708 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:38:12,708 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] [2020-12-01 15:38:12,921 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-12-01 15:38:12,925 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 15:38:12,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:38:12,926 INFO L82 PathProgramCache]: Analyzing trace with hash -1380709804, now seen corresponding path program 1 times [2020-12-01 15:38:12,926 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-12-01 15:38:12,926 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [515760266] [2020-12-01 15:38:12,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_cfcd9a63-28cb-4621-b570-8c9c2ee9e7bc/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 [2020-12-01 15:38:13,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:38:13,048 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 12 conjunts are in the unsatisfiable core [2020-12-01 15:38:13,050 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 15:38:13,119 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-12-01 15:38:13,123 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-01 15:38:13,236 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 15:38:13,236 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-01 15:38:13,346 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 15:38:13,347 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [515760266] [2020-12-01 15:38:13,347 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-12-01 15:38:13,347 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 10 [2020-12-01 15:38:13,347 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [341788431] [2020-12-01 15:38:13,348 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-01 15:38:13,348 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-12-01 15:38:13,349 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-01 15:38:13,349 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-12-01 15:38:13,349 INFO L87 Difference]: Start difference. First operand 47 states and 62 transitions. Second operand 10 states. [2020-12-01 15:38:13,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:38:13,785 INFO L93 Difference]: Finished difference Result 149 states and 197 transitions. [2020-12-01 15:38:13,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-01 15:38:13,786 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 21 [2020-12-01 15:38:13,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:38:13,788 INFO L225 Difference]: With dead ends: 149 [2020-12-01 15:38:13,788 INFO L226 Difference]: Without dead ends: 140 [2020-12-01 15:38:13,789 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=59, Invalid=151, Unknown=0, NotChecked=0, Total=210 [2020-12-01 15:38:13,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2020-12-01 15:38:13,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 75. [2020-12-01 15:38:13,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2020-12-01 15:38:13,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 102 transitions. [2020-12-01 15:38:13,821 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 102 transitions. Word has length 21 [2020-12-01 15:38:13,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:38:13,822 INFO L481 AbstractCegarLoop]: Abstraction has 75 states and 102 transitions. [2020-12-01 15:38:13,822 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-01 15:38:13,822 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 102 transitions. [2020-12-01 15:38:13,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-12-01 15:38:13,823 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:38:13,824 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] [2020-12-01 15:38:14,043 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2020-12-01 15:38:14,044 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 15:38:14,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:38:14,044 INFO L82 PathProgramCache]: Analyzing trace with hash 147544209, now seen corresponding path program 1 times [2020-12-01 15:38:14,045 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-12-01 15:38:14,045 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1374641182] [2020-12-01 15:38:14,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_cfcd9a63-28cb-4621-b570-8c9c2ee9e7bc/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 [2020-12-01 15:38:14,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:38:14,148 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 12 conjunts are in the unsatisfiable core [2020-12-01 15:38:14,149 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 15:38:14,185 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-12-01 15:38:14,185 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-01 15:38:14,214 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-01 15:38:14,428 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 15:38:14,428 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-01 15:38:14,598 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 15:38:14,599 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1374641182] [2020-12-01 15:38:14,599 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-12-01 15:38:14,599 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [] total 15 [2020-12-01 15:38:14,599 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [338954642] [2020-12-01 15:38:14,600 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-12-01 15:38:14,600 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-12-01 15:38:14,601 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-12-01 15:38:14,602 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2020-12-01 15:38:14,602 INFO L87 Difference]: Start difference. First operand 75 states and 102 transitions. Second operand 15 states. [2020-12-01 15:38:15,350 WARN L197 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 14 DAG size of output: 8 [2020-12-01 15:38:15,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:38:15,966 INFO L93 Difference]: Finished difference Result 180 states and 237 transitions. [2020-12-01 15:38:15,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-12-01 15:38:15,967 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 22 [2020-12-01 15:38:15,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:38:15,969 INFO L225 Difference]: With dead ends: 180 [2020-12-01 15:38:15,970 INFO L226 Difference]: Without dead ends: 178 [2020-12-01 15:38:15,971 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 128 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=185, Invalid=465, Unknown=0, NotChecked=0, Total=650 [2020-12-01 15:38:15,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2020-12-01 15:38:15,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 89. [2020-12-01 15:38:15,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2020-12-01 15:38:15,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 121 transitions. [2020-12-01 15:38:15,987 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 121 transitions. Word has length 22 [2020-12-01 15:38:15,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:38:15,987 INFO L481 AbstractCegarLoop]: Abstraction has 89 states and 121 transitions. [2020-12-01 15:38:15,987 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-12-01 15:38:15,987 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 121 transitions. [2020-12-01 15:38:15,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-12-01 15:38:15,989 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:38:15,989 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, 1] [2020-12-01 15:38:16,209 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 mathsat -unsat_core_generation=3 [2020-12-01 15:38:16,209 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 15:38:16,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:38:16,210 INFO L82 PathProgramCache]: Analyzing trace with hash -1845695531, now seen corresponding path program 1 times [2020-12-01 15:38:16,210 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-12-01 15:38:16,210 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1653580180] [2020-12-01 15:38:16,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_cfcd9a63-28cb-4621-b570-8c9c2ee9e7bc/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 [2020-12-01 15:38:16,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:38:16,311 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 12 conjunts are in the unsatisfiable core [2020-12-01 15:38:16,313 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 15:38:16,349 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-12-01 15:38:16,349 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-01 15:38:16,435 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 15:38:16,443 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-01 15:38:16,530 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 15:38:16,531 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1653580180] [2020-12-01 15:38:16,532 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-12-01 15:38:16,532 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 9 [2020-12-01 15:38:16,532 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1576259077] [2020-12-01 15:38:16,533 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-01 15:38:16,533 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-12-01 15:38:16,534 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-01 15:38:16,535 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-12-01 15:38:16,535 INFO L87 Difference]: Start difference. First operand 89 states and 121 transitions. Second operand 9 states. [2020-12-01 15:38:17,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:38:17,396 INFO L93 Difference]: Finished difference Result 166 states and 219 transitions. [2020-12-01 15:38:17,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-12-01 15:38:17,397 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 23 [2020-12-01 15:38:17,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:38:17,398 INFO L225 Difference]: With dead ends: 166 [2020-12-01 15:38:17,398 INFO L226 Difference]: Without dead ends: 131 [2020-12-01 15:38:17,400 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=71, Invalid=139, Unknown=0, NotChecked=0, Total=210 [2020-12-01 15:38:17,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2020-12-01 15:38:17,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 89. [2020-12-01 15:38:17,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2020-12-01 15:38:17,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 120 transitions. [2020-12-01 15:38:17,413 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 120 transitions. Word has length 23 [2020-12-01 15:38:17,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:38:17,414 INFO L481 AbstractCegarLoop]: Abstraction has 89 states and 120 transitions. [2020-12-01 15:38:17,416 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-01 15:38:17,416 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 120 transitions. [2020-12-01 15:38:17,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-12-01 15:38:17,417 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:38:17,418 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, 1, 1] [2020-12-01 15:38:17,634 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 mathsat -unsat_core_generation=3 [2020-12-01 15:38:17,634 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 15:38:17,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:38:17,635 INFO L82 PathProgramCache]: Analyzing trace with hash 156888005, now seen corresponding path program 1 times [2020-12-01 15:38:17,635 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-12-01 15:38:17,635 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1794645718] [2020-12-01 15:38:17,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_cfcd9a63-28cb-4621-b570-8c9c2ee9e7bc/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 [2020-12-01 15:38:17,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:38:17,727 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-01 15:38:17,729 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 15:38:17,772 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 15:38:17,773 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-01 15:38:17,834 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 15:38:17,834 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1794645718] [2020-12-01 15:38:17,834 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-12-01 15:38:17,835 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2020-12-01 15:38:17,835 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1151145296] [2020-12-01 15:38:17,837 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-01 15:38:17,837 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-12-01 15:38:17,838 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-01 15:38:17,839 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-12-01 15:38:17,839 INFO L87 Difference]: Start difference. First operand 89 states and 120 transitions. Second operand 6 states. [2020-12-01 15:38:17,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:38:17,955 INFO L93 Difference]: Finished difference Result 157 states and 199 transitions. [2020-12-01 15:38:17,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-01 15:38:17,956 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 24 [2020-12-01 15:38:17,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:38:17,957 INFO L225 Difference]: With dead ends: 157 [2020-12-01 15:38:17,958 INFO L226 Difference]: Without dead ends: 141 [2020-12-01 15:38:17,960 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-12-01 15:38:17,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2020-12-01 15:38:17,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 93. [2020-12-01 15:38:17,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2020-12-01 15:38:17,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 124 transitions. [2020-12-01 15:38:17,998 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 124 transitions. Word has length 24 [2020-12-01 15:38:17,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:38:17,999 INFO L481 AbstractCegarLoop]: Abstraction has 93 states and 124 transitions. [2020-12-01 15:38:17,999 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-01 15:38:17,999 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 124 transitions. [2020-12-01 15:38:18,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-12-01 15:38:18,001 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:38:18,001 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, 1, 1] [2020-12-01 15:38:18,216 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 mathsat -unsat_core_generation=3 [2020-12-01 15:38:18,216 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 15:38:18,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:38:18,217 INFO L82 PathProgramCache]: Analyzing trace with hash -1621213116, now seen corresponding path program 1 times [2020-12-01 15:38:18,217 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-12-01 15:38:18,217 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [737302603] [2020-12-01 15:38:18,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_cfcd9a63-28cb-4621-b570-8c9c2ee9e7bc/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 [2020-12-01 15:38:18,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:38:18,309 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 2 conjunts are in the unsatisfiable core [2020-12-01 15:38:18,310 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 15:38:18,337 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 15:38:18,337 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-01 15:38:18,354 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 15:38:18,354 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [737302603] [2020-12-01 15:38:18,355 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-12-01 15:38:18,355 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2020-12-01 15:38:18,355 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2069018417] [2020-12-01 15:38:18,356 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-01 15:38:18,356 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-12-01 15:38:18,356 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-01 15:38:18,357 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-01 15:38:18,357 INFO L87 Difference]: Start difference. First operand 93 states and 124 transitions. Second operand 3 states. [2020-12-01 15:38:18,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:38:18,391 INFO L93 Difference]: Finished difference Result 96 states and 127 transitions. [2020-12-01 15:38:18,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-01 15:38:18,392 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 24 [2020-12-01 15:38:18,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:38:18,396 INFO L225 Difference]: With dead ends: 96 [2020-12-01 15:38:18,396 INFO L226 Difference]: Without dead ends: 94 [2020-12-01 15:38:18,397 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-01 15:38:18,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2020-12-01 15:38:18,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 93. [2020-12-01 15:38:18,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2020-12-01 15:38:18,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 124 transitions. [2020-12-01 15:38:18,425 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 124 transitions. Word has length 24 [2020-12-01 15:38:18,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:38:18,425 INFO L481 AbstractCegarLoop]: Abstraction has 93 states and 124 transitions. [2020-12-01 15:38:18,425 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-01 15:38:18,426 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 124 transitions. [2020-12-01 15:38:18,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-12-01 15:38:18,427 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:38:18,427 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, 1, 1, 1] [2020-12-01 15:38:18,643 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 mathsat -unsat_core_generation=3 [2020-12-01 15:38:18,645 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 15:38:18,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:38:18,645 INFO L82 PathProgramCache]: Analyzing trace with hash 1743883267, now seen corresponding path program 1 times [2020-12-01 15:38:18,646 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-12-01 15:38:18,646 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1532317805] [2020-12-01 15:38:18,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_cfcd9a63-28cb-4621-b570-8c9c2ee9e7bc/bin/uautomizer/mathsat Starting monitored process 10 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with mathsat -unsat_core_generation=3 [2020-12-01 15:38:18,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:38:18,714 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 12 conjunts are in the unsatisfiable core [2020-12-01 15:38:18,716 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 15:38:18,762 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-12-01 15:38:18,762 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-01 15:38:18,835 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 15:38:18,835 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-01 15:38:18,938 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 15:38:18,939 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1532317805] [2020-12-01 15:38:18,939 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-12-01 15:38:18,939 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 10 [2020-12-01 15:38:18,939 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2056336892] [2020-12-01 15:38:18,940 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-01 15:38:18,940 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-12-01 15:38:18,940 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-01 15:38:18,941 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-12-01 15:38:18,941 INFO L87 Difference]: Start difference. First operand 93 states and 124 transitions. Second operand 10 states. [2020-12-01 15:38:19,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:38:19,460 INFO L93 Difference]: Finished difference Result 131 states and 173 transitions. [2020-12-01 15:38:19,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-01 15:38:19,463 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 25 [2020-12-01 15:38:19,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:38:19,464 INFO L225 Difference]: With dead ends: 131 [2020-12-01 15:38:19,464 INFO L226 Difference]: Without dead ends: 118 [2020-12-01 15:38:19,465 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210 [2020-12-01 15:38:19,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2020-12-01 15:38:19,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 89. [2020-12-01 15:38:19,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2020-12-01 15:38:19,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 118 transitions. [2020-12-01 15:38:19,475 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 118 transitions. Word has length 25 [2020-12-01 15:38:19,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:38:19,476 INFO L481 AbstractCegarLoop]: Abstraction has 89 states and 118 transitions. [2020-12-01 15:38:19,476 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-01 15:38:19,476 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 118 transitions. [2020-12-01 15:38:19,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-12-01 15:38:19,477 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:38:19,477 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, 1, 1, 1] [2020-12-01 15:38:19,697 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 mathsat -unsat_core_generation=3 [2020-12-01 15:38:19,697 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 15:38:19,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:38:19,697 INFO L82 PathProgramCache]: Analyzing trace with hash 839729769, now seen corresponding path program 1 times [2020-12-01 15:38:19,698 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-12-01 15:38:19,698 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2003203450] [2020-12-01 15:38:19,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_cfcd9a63-28cb-4621-b570-8c9c2ee9e7bc/bin/uautomizer/mathsat Starting monitored process 11 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with mathsat -unsat_core_generation=3 [2020-12-01 15:38:19,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:38:19,766 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 13 conjunts are in the unsatisfiable core [2020-12-01 15:38:19,768 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 15:38:19,796 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-12-01 15:38:19,796 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-01 15:38:19,883 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 15:38:19,884 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-01 15:38:19,985 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 15:38:19,986 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2003203450] [2020-12-01 15:38:19,986 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-12-01 15:38:19,986 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [] total 11 [2020-12-01 15:38:19,986 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2074307429] [2020-12-01 15:38:19,987 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-12-01 15:38:19,992 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-12-01 15:38:19,993 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-12-01 15:38:19,993 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2020-12-01 15:38:19,993 INFO L87 Difference]: Start difference. First operand 89 states and 118 transitions. Second operand 11 states. [2020-12-01 15:38:20,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:38:20,388 INFO L93 Difference]: Finished difference Result 114 states and 147 transitions. [2020-12-01 15:38:20,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-12-01 15:38:20,389 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 25 [2020-12-01 15:38:20,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:38:20,389 INFO L225 Difference]: With dead ends: 114 [2020-12-01 15:38:20,389 INFO L226 Difference]: Without dead ends: 78 [2020-12-01 15:38:20,390 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=80, Invalid=226, Unknown=0, NotChecked=0, Total=306 [2020-12-01 15:38:20,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2020-12-01 15:38:20,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 76. [2020-12-01 15:38:20,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-12-01 15:38:20,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 98 transitions. [2020-12-01 15:38:20,397 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 98 transitions. Word has length 25 [2020-12-01 15:38:20,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:38:20,397 INFO L481 AbstractCegarLoop]: Abstraction has 76 states and 98 transitions. [2020-12-01 15:38:20,397 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-12-01 15:38:20,397 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 98 transitions. [2020-12-01 15:38:20,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-12-01 15:38:20,398 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:38:20,398 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, 1, 1, 1] [2020-12-01 15:38:20,598 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 mathsat -unsat_core_generation=3 [2020-12-01 15:38:20,599 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 15:38:20,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:38:20,599 INFO L82 PathProgramCache]: Analyzing trace with hash 1281876129, now seen corresponding path program 1 times [2020-12-01 15:38:20,600 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-12-01 15:38:20,600 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1473737782] [2020-12-01 15:38:20,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_cfcd9a63-28cb-4621-b570-8c9c2ee9e7bc/bin/uautomizer/mathsat Starting monitored process 12 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with mathsat -unsat_core_generation=3 [2020-12-01 15:38:20,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:38:20,673 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 12 conjunts are in the unsatisfiable core [2020-12-01 15:38:20,674 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 15:38:20,710 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-12-01 15:38:20,710 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-01 15:38:20,787 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 15:38:20,787 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-01 15:38:20,855 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 15:38:20,855 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1473737782] [2020-12-01 15:38:20,856 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-12-01 15:38:20,856 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 9 [2020-12-01 15:38:20,856 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1728610067] [2020-12-01 15:38:20,856 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-01 15:38:20,856 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-12-01 15:38:20,857 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-01 15:38:20,857 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-12-01 15:38:20,858 INFO L87 Difference]: Start difference. First operand 76 states and 98 transitions. Second operand 9 states. [2020-12-01 15:38:21,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:38:21,239 INFO L93 Difference]: Finished difference Result 84 states and 104 transitions. [2020-12-01 15:38:21,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-01 15:38:21,240 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-12-01 15:38:21,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:38:21,241 INFO L225 Difference]: With dead ends: 84 [2020-12-01 15:38:21,241 INFO L226 Difference]: Without dead ends: 74 [2020-12-01 15:38:21,241 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2020-12-01 15:38:21,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-12-01 15:38:21,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2020-12-01 15:38:21,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2020-12-01 15:38:21,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 94 transitions. [2020-12-01 15:38:21,250 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 94 transitions. Word has length 25 [2020-12-01 15:38:21,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:38:21,250 INFO L481 AbstractCegarLoop]: Abstraction has 74 states and 94 transitions. [2020-12-01 15:38:21,250 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-01 15:38:21,250 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 94 transitions. [2020-12-01 15:38:21,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-12-01 15:38:21,254 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:38:21,254 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, 1, 1, 1, 1] [2020-12-01 15:38:21,473 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 mathsat -unsat_core_generation=3 [2020-12-01 15:38:21,474 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 15:38:21,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:38:21,474 INFO L82 PathProgramCache]: Analyzing trace with hash -144403189, now seen corresponding path program 1 times [2020-12-01 15:38:21,475 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-12-01 15:38:21,476 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1604516089] [2020-12-01 15:38:21,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_cfcd9a63-28cb-4621-b570-8c9c2ee9e7bc/bin/uautomizer/mathsat Starting monitored process 13 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with mathsat -unsat_core_generation=3 [2020-12-01 15:38:21,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:38:21,576 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 9 conjunts are in the unsatisfiable core [2020-12-01 15:38:21,580 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 15:38:21,604 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-12-01 15:38:21,605 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-01 15:38:21,665 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 15:38:21,665 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-01 15:38:22,087 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 15:38:22,088 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1604516089] [2020-12-01 15:38:22,088 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-12-01 15:38:22,088 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 10 [2020-12-01 15:38:22,088 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [929624671] [2020-12-01 15:38:22,089 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-01 15:38:22,089 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-12-01 15:38:22,089 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-01 15:38:22,090 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2020-12-01 15:38:22,090 INFO L87 Difference]: Start difference. First operand 74 states and 94 transitions. Second operand 10 states. [2020-12-01 15:38:22,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:38:22,410 INFO L93 Difference]: Finished difference Result 82 states and 101 transitions. [2020-12-01 15:38:22,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-01 15:38:22,411 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 26 [2020-12-01 15:38:22,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:38:22,412 INFO L225 Difference]: With dead ends: 82 [2020-12-01 15:38:22,412 INFO L226 Difference]: Without dead ends: 74 [2020-12-01 15:38:22,413 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2020-12-01 15:38:22,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-12-01 15:38:22,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2020-12-01 15:38:22,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2020-12-01 15:38:22,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 93 transitions. [2020-12-01 15:38:22,418 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 93 transitions. Word has length 26 [2020-12-01 15:38:22,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:38:22,419 INFO L481 AbstractCegarLoop]: Abstraction has 74 states and 93 transitions. [2020-12-01 15:38:22,419 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-01 15:38:22,419 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 93 transitions. [2020-12-01 15:38:22,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-12-01 15:38:22,419 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:38:22,420 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, 1, 1, 1, 1] [2020-12-01 15:38:22,620 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 mathsat -unsat_core_generation=3 [2020-12-01 15:38:22,620 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 15:38:22,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:38:22,626 INFO L82 PathProgramCache]: Analyzing trace with hash -953749815, now seen corresponding path program 1 times [2020-12-01 15:38:22,627 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-12-01 15:38:22,627 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [13448049] [2020-12-01 15:38:22,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_cfcd9a63-28cb-4621-b570-8c9c2ee9e7bc/bin/uautomizer/mathsat Starting monitored process 14 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with mathsat -unsat_core_generation=3 [2020-12-01 15:38:22,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:38:22,721 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 12 conjunts are in the unsatisfiable core [2020-12-01 15:38:22,723 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 15:38:22,822 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 1] term [2020-12-01 15:38:22,822 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-01 15:38:22,934 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 15:38:22,935 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-01 15:38:23,088 INFO L398 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 1] term [2020-12-01 15:38:23,088 INFO L639 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-12-01 15:38:23,196 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 15:38:23,197 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [13448049] [2020-12-01 15:38:23,197 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-12-01 15:38:23,197 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [] total 16 [2020-12-01 15:38:23,197 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2136886468] [2020-12-01 15:38:23,198 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-12-01 15:38:23,198 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-12-01 15:38:23,198 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-12-01 15:38:23,199 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=190, Unknown=0, NotChecked=0, Total=240 [2020-12-01 15:38:23,199 INFO L87 Difference]: Start difference. First operand 74 states and 93 transitions. Second operand 16 states. [2020-12-01 15:38:25,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:38:25,688 INFO L93 Difference]: Finished difference Result 154 states and 169 transitions. [2020-12-01 15:38:25,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-12-01 15:38:25,689 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 26 [2020-12-01 15:38:25,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:38:25,690 INFO L225 Difference]: With dead ends: 154 [2020-12-01 15:38:25,690 INFO L226 Difference]: Without dead ends: 134 [2020-12-01 15:38:25,691 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=186, Invalid=464, Unknown=0, NotChecked=0, Total=650 [2020-12-01 15:38:25,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2020-12-01 15:38:25,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 72. [2020-12-01 15:38:25,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2020-12-01 15:38:25,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 87 transitions. [2020-12-01 15:38:25,699 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 87 transitions. Word has length 26 [2020-12-01 15:38:25,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:38:25,699 INFO L481 AbstractCegarLoop]: Abstraction has 72 states and 87 transitions. [2020-12-01 15:38:25,699 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-12-01 15:38:25,699 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 87 transitions. [2020-12-01 15:38:25,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-12-01 15:38:25,700 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:38:25,700 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, 1, 1, 1, 1, 1] [2020-12-01 15:38:25,900 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 mathsat -unsat_core_generation=3 [2020-12-01 15:38:25,901 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 15:38:25,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:38:25,901 INFO L82 PathProgramCache]: Analyzing trace with hash -1548503636, now seen corresponding path program 1 times [2020-12-01 15:38:25,901 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-12-01 15:38:25,902 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1055319251] [2020-12-01 15:38:25,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_cfcd9a63-28cb-4621-b570-8c9c2ee9e7bc/bin/uautomizer/mathsat Starting monitored process 15 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with mathsat -unsat_core_generation=3 [2020-12-01 15:38:25,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:38:25,998 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 22 conjunts are in the unsatisfiable core [2020-12-01 15:38:25,999 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 15:38:26,022 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-12-01 15:38:26,023 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-01 15:38:26,045 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-01 15:38:26,353 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 15:38:26,353 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-01 15:38:26,632 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 15:38:26,632 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1055319251] [2020-12-01 15:38:26,632 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-12-01 15:38:26,633 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12, 12] imperfect sequences [] total 15 [2020-12-01 15:38:26,633 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2134198205] [2020-12-01 15:38:26,633 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-12-01 15:38:26,634 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-12-01 15:38:26,636 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-12-01 15:38:26,636 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2020-12-01 15:38:26,636 INFO L87 Difference]: Start difference. First operand 72 states and 87 transitions. Second operand 15 states. [2020-12-01 15:38:28,026 WARN L197 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 37 [2020-12-01 15:38:28,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:38:28,934 INFO L93 Difference]: Finished difference Result 195 states and 205 transitions. [2020-12-01 15:38:28,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2020-12-01 15:38:28,934 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 27 [2020-12-01 15:38:28,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:38:28,935 INFO L225 Difference]: With dead ends: 195 [2020-12-01 15:38:28,936 INFO L226 Difference]: Without dead ends: 158 [2020-12-01 15:38:28,937 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 34 SyntacticMatches, 5 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 444 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=455, Invalid=1437, Unknown=0, NotChecked=0, Total=1892 [2020-12-01 15:38:28,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2020-12-01 15:38:28,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 43. [2020-12-01 15:38:28,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-12-01 15:38:28,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 53 transitions. [2020-12-01 15:38:28,943 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 53 transitions. Word has length 27 [2020-12-01 15:38:28,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:38:28,944 INFO L481 AbstractCegarLoop]: Abstraction has 43 states and 53 transitions. [2020-12-01 15:38:28,944 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-12-01 15:38:28,944 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 53 transitions. [2020-12-01 15:38:28,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-12-01 15:38:28,945 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:38:28,945 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, 1, 1, 1, 1, 1, 1] [2020-12-01 15:38:29,168 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 mathsat -unsat_core_generation=3 [2020-12-01 15:38:29,169 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 15:38:29,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:38:29,169 INFO L82 PathProgramCache]: Analyzing trace with hash 1423958792, now seen corresponding path program 1 times [2020-12-01 15:38:29,169 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-12-01 15:38:29,169 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [149769350] [2020-12-01 15:38:29,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_cfcd9a63-28cb-4621-b570-8c9c2ee9e7bc/bin/uautomizer/mathsat Starting monitored process 16 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with mathsat -unsat_core_generation=3 [2020-12-01 15:38:29,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:38:29,276 INFO L263 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 21 conjunts are in the unsatisfiable core [2020-12-01 15:38:29,278 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 15:38:29,310 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-12-01 15:38:29,311 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-01 15:38:29,643 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 15:38:29,643 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-01 15:38:29,884 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 15:38:29,887 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [149769350] [2020-12-01 15:38:29,890 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-12-01 15:38:29,890 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10, 10] imperfect sequences [] total 12 [2020-12-01 15:38:29,891 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [626830029] [2020-12-01 15:38:29,891 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-12-01 15:38:29,891 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-12-01 15:38:29,892 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-12-01 15:38:29,892 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2020-12-01 15:38:29,892 INFO L87 Difference]: Start difference. First operand 43 states and 53 transitions. Second operand 12 states. [2020-12-01 15:38:31,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:38:31,095 INFO L93 Difference]: Finished difference Result 125 states and 140 transitions. [2020-12-01 15:38:31,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-12-01 15:38:31,096 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 28 [2020-12-01 15:38:31,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:38:31,097 INFO L225 Difference]: With dead ends: 125 [2020-12-01 15:38:31,098 INFO L226 Difference]: Without dead ends: 101 [2020-12-01 15:38:31,099 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 39 SyntacticMatches, 5 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 147 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=209, Invalid=603, Unknown=0, NotChecked=0, Total=812 [2020-12-01 15:38:31,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2020-12-01 15:38:31,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 41. [2020-12-01 15:38:31,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-12-01 15:38:31,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 49 transitions. [2020-12-01 15:38:31,105 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 49 transitions. Word has length 28 [2020-12-01 15:38:31,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:38:31,106 INFO L481 AbstractCegarLoop]: Abstraction has 41 states and 49 transitions. [2020-12-01 15:38:31,106 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-12-01 15:38:31,106 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 49 transitions. [2020-12-01 15:38:31,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-12-01 15:38:31,107 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:38:31,107 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 15:38:31,320 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 mathsat -unsat_core_generation=3 [2020-12-01 15:38:31,320 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 15:38:31,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:38:31,321 INFO L82 PathProgramCache]: Analyzing trace with hash 489956430, now seen corresponding path program 1 times [2020-12-01 15:38:31,321 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-12-01 15:38:31,321 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [616526330] [2020-12-01 15:38:31,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_cfcd9a63-28cb-4621-b570-8c9c2ee9e7bc/bin/uautomizer/mathsat Starting monitored process 17 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with mathsat -unsat_core_generation=3 [2020-12-01 15:38:31,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:38:31,440 INFO L263 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 10 conjunts are in the unsatisfiable core [2020-12-01 15:38:31,441 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 15:38:31,472 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-12-01 15:38:31,473 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-01 15:38:31,504 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-01 15:38:31,569 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 15:38:31,569 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-01 15:38:31,911 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 15:38:31,911 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [616526330] [2020-12-01 15:38:31,911 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-12-01 15:38:31,912 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 10 [2020-12-01 15:38:31,912 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [552522705] [2020-12-01 15:38:31,912 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-01 15:38:31,912 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-12-01 15:38:31,913 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-01 15:38:31,913 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-12-01 15:38:31,913 INFO L87 Difference]: Start difference. First operand 41 states and 49 transitions. Second operand 10 states. [2020-12-01 15:38:32,677 WARN L197 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 25 [2020-12-01 15:38:32,898 WARN L197 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2020-12-01 15:38:32,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:38:32,959 INFO L93 Difference]: Finished difference Result 52 states and 59 transitions. [2020-12-01 15:38:32,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-01 15:38:32,960 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 32 [2020-12-01 15:38:32,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:38:32,961 INFO L225 Difference]: With dead ends: 52 [2020-12-01 15:38:32,961 INFO L226 Difference]: Without dead ends: 41 [2020-12-01 15:38:32,961 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2020-12-01 15:38:32,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2020-12-01 15:38:32,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2020-12-01 15:38:32,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-12-01 15:38:32,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 48 transitions. [2020-12-01 15:38:32,967 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 48 transitions. Word has length 32 [2020-12-01 15:38:32,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:38:32,968 INFO L481 AbstractCegarLoop]: Abstraction has 41 states and 48 transitions. [2020-12-01 15:38:32,968 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-01 15:38:32,968 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 48 transitions. [2020-12-01 15:38:32,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-12-01 15:38:32,968 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:38:32,968 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 15:38:33,169 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 mathsat -unsat_core_generation=3 [2020-12-01 15:38:33,169 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 15:38:33,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:38:33,169 INFO L82 PathProgramCache]: Analyzing trace with hash 1191021008, now seen corresponding path program 1 times [2020-12-01 15:38:33,170 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-12-01 15:38:33,170 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1663074980] [2020-12-01 15:38:33,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_cfcd9a63-28cb-4621-b570-8c9c2ee9e7bc/bin/uautomizer/mathsat Starting monitored process 18 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with mathsat -unsat_core_generation=3 [2020-12-01 15:38:33,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:38:33,294 INFO L263 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 15 conjunts are in the unsatisfiable core [2020-12-01 15:38:33,296 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 15:38:33,342 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-12-01 15:38:33,342 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-01 15:38:33,372 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-01 15:38:33,446 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 15:38:33,446 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-01 15:38:33,490 INFO L398 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 1] term [2020-12-01 15:38:33,490 INFO L639 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-12-01 15:38:33,665 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 15:38:33,665 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1663074980] [2020-12-01 15:38:33,665 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-12-01 15:38:33,665 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [] total 14 [2020-12-01 15:38:33,666 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1249181947] [2020-12-01 15:38:33,666 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-12-01 15:38:33,666 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-12-01 15:38:33,667 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-12-01 15:38:33,667 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2020-12-01 15:38:33,668 INFO L87 Difference]: Start difference. First operand 41 states and 48 transitions. Second operand 14 states. [2020-12-01 15:38:34,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:38:34,533 INFO L93 Difference]: Finished difference Result 55 states and 61 transitions. [2020-12-01 15:38:34,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-01 15:38:34,534 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 32 [2020-12-01 15:38:34,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:38:34,535 INFO L225 Difference]: With dead ends: 55 [2020-12-01 15:38:34,535 INFO L226 Difference]: Without dead ends: 41 [2020-12-01 15:38:34,535 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=113, Invalid=349, Unknown=0, NotChecked=0, Total=462 [2020-12-01 15:38:34,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2020-12-01 15:38:34,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 39. [2020-12-01 15:38:34,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-12-01 15:38:34,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 42 transitions. [2020-12-01 15:38:34,540 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 42 transitions. Word has length 32 [2020-12-01 15:38:34,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:38:34,540 INFO L481 AbstractCegarLoop]: Abstraction has 39 states and 42 transitions. [2020-12-01 15:38:34,541 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-12-01 15:38:34,541 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 42 transitions. [2020-12-01 15:38:34,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-12-01 15:38:34,541 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:38:34,541 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 15:38:34,754 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 mathsat -unsat_core_generation=3 [2020-12-01 15:38:34,755 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 15:38:34,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:38:34,755 INFO L82 PathProgramCache]: Analyzing trace with hash -1654102483, now seen corresponding path program 1 times [2020-12-01 15:38:34,755 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-12-01 15:38:34,756 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2142155241] [2020-12-01 15:38:34,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_cfcd9a63-28cb-4621-b570-8c9c2ee9e7bc/bin/uautomizer/mathsat Starting monitored process 19 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with mathsat -unsat_core_generation=3 [2020-12-01 15:38:34,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:38:34,837 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 11 conjunts are in the unsatisfiable core [2020-12-01 15:38:34,839 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 15:38:34,953 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 1] term [2020-12-01 15:38:34,954 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-01 15:38:35,060 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 15:38:35,060 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-01 15:38:35,157 INFO L398 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 1] term [2020-12-01 15:38:35,157 INFO L639 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-12-01 15:38:35,200 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 15:38:35,201 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2142155241] [2020-12-01 15:38:35,201 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-12-01 15:38:35,201 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 12 [2020-12-01 15:38:35,201 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1269253735] [2020-12-01 15:38:35,202 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-12-01 15:38:35,202 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-12-01 15:38:35,202 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-12-01 15:38:35,202 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2020-12-01 15:38:35,203 INFO L87 Difference]: Start difference. First operand 39 states and 42 transitions. Second operand 12 states. [2020-12-01 15:38:36,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:38:36,596 INFO L93 Difference]: Finished difference Result 79 states and 81 transitions. [2020-12-01 15:38:36,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-12-01 15:38:36,596 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 33 [2020-12-01 15:38:36,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:38:36,597 INFO L225 Difference]: With dead ends: 79 [2020-12-01 15:38:36,597 INFO L226 Difference]: Without dead ends: 61 [2020-12-01 15:38:36,597 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=90, Invalid=252, Unknown=0, NotChecked=0, Total=342 [2020-12-01 15:38:36,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2020-12-01 15:38:36,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 39. [2020-12-01 15:38:36,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-12-01 15:38:36,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 41 transitions. [2020-12-01 15:38:36,604 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 41 transitions. Word has length 33 [2020-12-01 15:38:36,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:38:36,604 INFO L481 AbstractCegarLoop]: Abstraction has 39 states and 41 transitions. [2020-12-01 15:38:36,604 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-12-01 15:38:36,604 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 41 transitions. [2020-12-01 15:38:36,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-12-01 15:38:36,605 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:38:36,605 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 15:38:36,818 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 mathsat -unsat_core_generation=3 [2020-12-01 15:38:36,819 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 15:38:36,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:38:36,819 INFO L82 PathProgramCache]: Analyzing trace with hash 798574185, now seen corresponding path program 1 times [2020-12-01 15:38:36,819 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-12-01 15:38:36,819 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [712790785] [2020-12-01 15:38:36,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_cfcd9a63-28cb-4621-b570-8c9c2ee9e7bc/bin/uautomizer/mathsat Starting monitored process 20 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with mathsat -unsat_core_generation=3 [2020-12-01 15:38:36,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:38:36,952 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-01 15:38:36,953 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 15:38:36,990 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 15:38:36,990 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-01 15:38:37,014 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 15:38:37,015 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [712790785] [2020-12-01 15:38:37,015 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-12-01 15:38:37,015 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2020-12-01 15:38:37,015 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [834493286] [2020-12-01 15:38:37,015 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-01 15:38:37,016 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-12-01 15:38:37,016 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-01 15:38:37,016 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-01 15:38:37,017 INFO L87 Difference]: Start difference. First operand 39 states and 41 transitions. Second operand 4 states. [2020-12-01 15:38:37,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:38:37,040 INFO L93 Difference]: Finished difference Result 39 states and 41 transitions. [2020-12-01 15:38:37,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-01 15:38:37,040 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 35 [2020-12-01 15:38:37,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:38:37,040 INFO L225 Difference]: With dead ends: 39 [2020-12-01 15:38:37,040 INFO L226 Difference]: Without dead ends: 0 [2020-12-01 15:38:37,041 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-01 15:38:37,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-01 15:38:37,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-01 15:38:37,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-01 15:38:37,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-01 15:38:37,042 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 35 [2020-12-01 15:38:37,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:38:37,042 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-01 15:38:37,042 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-01 15:38:37,042 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-01 15:38:37,043 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-01 15:38:37,246 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 mathsat -unsat_core_generation=3 [2020-12-01 15:38:37,248 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-12-01 15:38:37,646 WARN L197 SmtUtils]: Spent 271.00 ms on a formula simplification. DAG size of input: 152 DAG size of output: 122 [2020-12-01 15:38:37,781 WARN L197 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 141 DAG size of output: 136 [2020-12-01 15:38:38,040 WARN L197 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 147 DAG size of output: 112 [2020-12-01 15:38:38,154 WARN L197 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 147 DAG size of output: 120 [2020-12-01 15:38:38,379 WARN L197 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 23 [2020-12-01 15:38:39,464 WARN L197 SmtUtils]: Spent 1.04 s on a formula simplification. DAG size of input: 122 DAG size of output: 39 [2020-12-01 15:38:40,230 WARN L197 SmtUtils]: Spent 764.00 ms on a formula simplification. DAG size of input: 136 DAG size of output: 27 [2020-12-01 15:38:40,802 WARN L197 SmtUtils]: Spent 570.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 33 [2020-12-01 15:38:41,153 WARN L197 SmtUtils]: Spent 350.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 25 [2020-12-01 15:38:41,488 WARN L197 SmtUtils]: Spent 335.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 32 [2020-12-01 15:38:44,135 WARN L197 SmtUtils]: Spent 2.65 s on a formula simplification. DAG size of input: 77 DAG size of output: 34 [2020-12-01 15:38:44,854 WARN L197 SmtUtils]: Spent 717.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 43 [2020-12-01 15:38:45,601 WARN L197 SmtUtils]: Spent 745.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 37 [2020-12-01 15:38:45,650 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 3) no Hoare annotation was computed. [2020-12-01 15:38:45,650 INFO L262 CegarLoopResult]: For program point L3(line 3) no Hoare annotation was computed. [2020-12-01 15:38:45,651 INFO L262 CegarLoopResult]: For program point L3-1(line 3) no Hoare annotation was computed. [2020-12-01 15:38:45,651 INFO L262 CegarLoopResult]: For program point L3-2(line 3) no Hoare annotation was computed. [2020-12-01 15:38:45,651 INFO L262 CegarLoopResult]: For program point L3-3(line 3) no Hoare annotation was computed. [2020-12-01 15:38:45,651 INFO L262 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-12-01 15:38:45,651 INFO L262 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-12-01 15:38:45,651 INFO L262 CegarLoopResult]: For program point L28(lines 28 34) no Hoare annotation was computed. [2020-12-01 15:38:45,651 INFO L262 CegarLoopResult]: For program point L28-1(lines 28 34) no Hoare annotation was computed. [2020-12-01 15:38:45,652 INFO L262 CegarLoopResult]: For program point L70(line 70) no Hoare annotation was computed. [2020-12-01 15:38:45,652 INFO L262 CegarLoopResult]: For program point L70-2(line 70) no Hoare annotation was computed. [2020-12-01 15:38:45,652 INFO L262 CegarLoopResult]: For program point L70-3(lines 70 71) no Hoare annotation was computed. [2020-12-01 15:38:45,652 INFO L262 CegarLoopResult]: For program point L70-5(lines 70 86) no Hoare annotation was computed. [2020-12-01 15:38:45,652 INFO L262 CegarLoopResult]: For program point L70-7(lines 70 86) no Hoare annotation was computed. [2020-12-01 15:38:45,652 INFO L262 CegarLoopResult]: For program point L71(line 71) no Hoare annotation was computed. [2020-12-01 15:38:45,652 INFO L262 CegarLoopResult]: For program point L38(lines 38 39) no Hoare annotation was computed. [2020-12-01 15:38:45,652 INFO L262 CegarLoopResult]: For program point L71-2(line 71) no Hoare annotation was computed. [2020-12-01 15:38:45,653 INFO L265 CegarLoopResult]: At program point L88(lines 61 89) the Hoare annotation is: true [2020-12-01 15:38:45,653 INFO L262 CegarLoopResult]: For program point L31(lines 31 34) no Hoare annotation was computed. [2020-12-01 15:38:45,666 INFO L262 CegarLoopResult]: For program point L31-1(lines 31 34) no Hoare annotation was computed. [2020-12-01 15:38:45,666 INFO L262 CegarLoopResult]: For program point L40(lines 40 41) no Hoare annotation was computed. [2020-12-01 15:38:45,666 INFO L262 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-12-01 15:38:45,666 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 3) no Hoare annotation was computed. [2020-12-01 15:38:45,666 INFO L262 CegarLoopResult]: For program point L82(line 82) no Hoare annotation was computed. [2020-12-01 15:38:45,667 INFO L262 CegarLoopResult]: For program point L82-2(lines 82 85) no Hoare annotation was computed. [2020-12-01 15:38:45,667 INFO L262 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-12-01 15:38:45,667 INFO L262 CegarLoopResult]: For program point L25(lines 25 34) no Hoare annotation was computed. [2020-12-01 15:38:45,667 INFO L262 CegarLoopResult]: For program point L25-1(lines 25 34) no Hoare annotation was computed. [2020-12-01 15:38:45,667 INFO L262 CegarLoopResult]: For program point L17-1(lines 17 21) no Hoare annotation was computed. [2020-12-01 15:38:45,667 INFO L258 CegarLoopResult]: At program point L17-2(lines 17 21) the Hoare annotation is: (let ((.cse0 (= ULTIMATE.start_fmin_float_~y ULTIMATE.start_main_~y~0)) (.cse1 (fp.eq ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~x~0))) (or (and .cse0 (= (_ bv0 32) |ULTIMATE.start_isnan_float_#res|) (not (fp.eq ULTIMATE.start_fmin_float_~x ULTIMATE.start_fmin_float_~x)) (fp.eq ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0) (not .cse1)) (and .cse0 (= ULTIMATE.start_fmin_float_~x ULTIMATE.start_main_~x~0) (= (_ bv1 32) |ULTIMATE.start_isnan_float_#res|) .cse1 (not (fp.eq ULTIMATE.start_fmin_float_~y ULTIMATE.start_fmin_float_~y)) (= ULTIMATE.start_fmin_float_~x ULTIMATE.start___fpclassify_float_~x)))) [2020-12-01 15:38:45,667 INFO L262 CegarLoopResult]: For program point L17-3(lines 14 35) no Hoare annotation was computed. [2020-12-01 15:38:45,668 INFO L262 CegarLoopResult]: For program point L17-5(lines 17 21) no Hoare annotation was computed. [2020-12-01 15:38:45,668 INFO L258 CegarLoopResult]: At program point L17-6(lines 17 21) the Hoare annotation is: (let ((.cse0 (= ULTIMATE.start_fmin_float_~y ULTIMATE.start_main_~y~0))) (or (and (not (fp.eq ULTIMATE.start___fpclassify_float_~x ULTIMATE.start___fpclassify_float_~x)) .cse0 (fp.eq ULTIMATE.start_fmin_float_~x ULTIMATE.start_main_~x~0) (= (_ bv1 32) |ULTIMATE.start_isnan_float_#res|) (not (fp.eq ULTIMATE.start_fmin_float_~y ULTIMATE.start_fmin_float_~y))) (and (= ULTIMATE.start_fmin_float_~y ULTIMATE.start___fpclassify_float_~x) .cse0 (= (_ bv0 32) |ULTIMATE.start_isnan_float_#res|) (not (fp.eq ULTIMATE.start_fmin_float_~x ULTIMATE.start_fmin_float_~x)) (fp.eq ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0) (not (fp.eq ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~x~0))))) [2020-12-01 15:38:45,668 INFO L262 CegarLoopResult]: For program point L17-7(lines 14 35) no Hoare annotation was computed. [2020-12-01 15:38:45,669 INFO L258 CegarLoopResult]: At program point L34(lines 14 35) the Hoare annotation is: (let ((.cse0 (= ULTIMATE.start_fmin_float_~y ULTIMATE.start_main_~y~0))) (or (and .cse0 (= (_ bv0 32) |ULTIMATE.start_isnan_float_#res|) (not (fp.eq ULTIMATE.start_fmin_float_~x ULTIMATE.start_fmin_float_~x)) (fp.eq ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0) (not (fp.eq ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~x~0))) (let ((.cse1 (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)))) (and (= ULTIMATE.start_fmin_float_~x .cse1) .cse0 (not (= (_ bv0 32) |ULTIMATE.start___fpclassify_float_#res|)) (= ULTIMATE.start_fmin_float_~x ULTIMATE.start_main_~x~0) (= (_ bv1 32) |ULTIMATE.start_isnan_float_#res|) (= ULTIMATE.start_fmin_float_~x ULTIMATE.start___fpclassify_float_~x) (not (fp.eq ULTIMATE.start_fmin_float_~y ULTIMATE.start_fmin_float_~y)) (fp.eq .cse1 .cse1))))) [2020-12-01 15:38:45,669 INFO L258 CegarLoopResult]: At program point L34-1(lines 14 35) the Hoare annotation is: (let ((.cse1 (= (_ bv0 32) |ULTIMATE.start___fpclassify_float_#res|)) (.cse0 (= ULTIMATE.start_fmin_float_~y ULTIMATE.start_main_~y~0)) (.cse2 (= ULTIMATE.start_fmin_float_~y (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))))) (or (and (not (fp.eq ULTIMATE.start___fpclassify_float_~x ULTIMATE.start___fpclassify_float_~x)) .cse0 (fp.eq ULTIMATE.start_fmin_float_~x ULTIMATE.start_main_~x~0) (= (_ bv1 32) |ULTIMATE.start_isnan_float_#res|) (not (fp.eq ULTIMATE.start_fmin_float_~y ULTIMATE.start_fmin_float_~y)) .cse1 .cse2) (and (= ULTIMATE.start_fmin_float_~y ULTIMATE.start___fpclassify_float_~x) (not .cse1) .cse0 (not (fp.eq ULTIMATE.start_fmin_float_~x ULTIMATE.start_fmin_float_~x)) (fp.eq ULTIMATE.start_fmin_float_~y ULTIMATE.start_main_~y~0) (not (fp.eq ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~x~0)) .cse2))) [2020-12-01 15:38:45,669 INFO L258 CegarLoopResult]: At program point L59(line 59) the Hoare annotation is: (let ((.cse0 (fp.eq ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~x~0))) (or (and (= (_ bv0 32) |ULTIMATE.start_isnan_float_#res|) .cse0) (and (= (_ bv1 32) |ULTIMATE.start_isnan_float_#res|) (not .cse0)))) [2020-12-01 15:38:45,670 INFO L258 CegarLoopResult]: At program point L59-1(line 59) the Hoare annotation is: (and (let ((.cse0 (fp.eq ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0))) (or (and (= (_ bv0 32) |ULTIMATE.start_isnan_float_#res|) .cse0) (and (= (_ bv1 32) |ULTIMATE.start_isnan_float_#res|) (not .cse0)))) |ULTIMATE.start_main_#t~short18| (not (fp.eq ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~x~0))) [2020-12-01 15:38:45,670 INFO L258 CegarLoopResult]: At program point L59-2(line 59) the Hoare annotation is: (let ((.cse0 (not |ULTIMATE.start_main_#t~short18|)) (.cse2 (fp.eq ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~x~0)) (.cse1 (not |ULTIMATE.start_main_#t~short22|))) (or (and (= (_ bv1 32) |ULTIMATE.start_isnan_float_#res|) .cse0 .cse1 (not (fp.eq ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0)) (not .cse2)) (and (= (_ bv0 32) |ULTIMATE.start_isnan_float_#res|) .cse0 .cse2 .cse1))) [2020-12-01 15:38:45,670 INFO L258 CegarLoopResult]: At program point L59-3(line 59) the Hoare annotation is: (and (let ((.cse0 (fp.eq ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0))) (or (and (= (_ bv0 32) |ULTIMATE.start_isnan_float_#res|) .cse0) (and (= (_ bv1 32) |ULTIMATE.start_isnan_float_#res|) (not .cse0)))) (not |ULTIMATE.start_main_#t~short18|) (fp.eq ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~x~0) (not |ULTIMATE.start_main_#t~short22|) |ULTIMATE.start_main_#t~short21|) [2020-12-01 15:38:45,670 INFO L258 CegarLoopResult]: At program point L59-4(line 59) the Hoare annotation is: (let ((.cse1 (= (_ bv1 32) |ULTIMATE.start_isnan_float_#res|)) (.cse2 (not (fp.eq ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~x~0))) (.cse3 (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_fmin_float_~y ULTIMATE.start_main_~y~0))) (or (and (fp.eq |ULTIMATE.start_fmin_float_#res| ULTIMATE.start_main_~y~0) (= ULTIMATE.start_fmin_float_~y ULTIMATE.start___fpclassify_float_~x) .cse0 (fp.eq ULTIMATE.start_main_~res~0 ULTIMATE.start_main_~y~0) .cse1 (not (fp.eq ULTIMATE.start_fmin_float_~x ULTIMATE.start_fmin_float_~x)) .cse2 (= ULTIMATE.start_fmin_float_~y .cse3)) (and (= ULTIMATE.start_main_~y~0 |ULTIMATE.start_fmin_float_#res|) (= ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~res~0) .cse0 .cse1 (fp.eq ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0) .cse2) (and (not (fp.eq .cse3 .cse3)) (fp.eq |ULTIMATE.start_fmin_float_#res| ULTIMATE.start_main_~x~0) .cse0 (not (fp.eq ULTIMATE.start___fpclassify_float_~x ULTIMATE.start___fpclassify_float_~x)) (= (_ bv0 32) |ULTIMATE.start_isnan_float_#res|) (fp.eq ULTIMATE.start_fmin_float_~x ULTIMATE.start_main_~x~0) (fp.eq ULTIMATE.start_main_~res~0 ULTIMATE.start_main_~x~0) (not (fp.eq ULTIMATE.start_fmin_float_~y ULTIMATE.start_fmin_float_~y))))) [2020-12-01 15:38:45,671 INFO L258 CegarLoopResult]: At program point L59-5(line 59) the Hoare annotation is: (let ((.cse0 (= ULTIMATE.start_fmin_float_~y ULTIMATE.start_main_~y~0)) (.cse1 (= (_ bv0 32) |ULTIMATE.start_isnan_float_#res|)) (.cse2 (not (fp.eq ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~x~0)))) (or (and (= ULTIMATE.start_main_~y~0 |ULTIMATE.start_fmin_float_#res|) (= ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~res~0) .cse0 .cse1 (fp.eq ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0) |ULTIMATE.start_main_#t~short26| .cse2) (and (fp.eq |ULTIMATE.start_fmin_float_#res| ULTIMATE.start_main_~y~0) (= ULTIMATE.start_fmin_float_~y ULTIMATE.start___fpclassify_float_~x) .cse0 .cse1 (fp.eq ULTIMATE.start_main_~res~0 ULTIMATE.start_main_~y~0) (not (fp.eq ULTIMATE.start_fmin_float_~x ULTIMATE.start_fmin_float_~x)) |ULTIMATE.start_main_#t~short26| .cse2 (= ULTIMATE.start_fmin_float_~y (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)))))) [2020-12-01 15:38:45,671 INFO L258 CegarLoopResult]: At program point L59-6(line 59) the Hoare annotation is: (or (and (= (_ bv1 32) |ULTIMATE.start_isnan_float_#res|) (not (fp.eq ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~x~0))) (and (not (let ((.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)))) (fp.eq .cse0 .cse0))) (fp.eq |ULTIMATE.start_fmin_float_#res| ULTIMATE.start_main_~x~0) (= ULTIMATE.start_fmin_float_~y ULTIMATE.start_main_~y~0) (not (fp.eq ULTIMATE.start___fpclassify_float_~x ULTIMATE.start___fpclassify_float_~x)) (= (_ bv0 32) |ULTIMATE.start_isnan_float_#res|) (fp.eq ULTIMATE.start_fmin_float_~x ULTIMATE.start_main_~x~0) (fp.eq ULTIMATE.start_main_~res~0 ULTIMATE.start_main_~x~0) (not (fp.eq ULTIMATE.start_fmin_float_~y ULTIMATE.start_fmin_float_~y)))) [2020-12-01 15:38:45,671 INFO L258 CegarLoopResult]: At program point L59-7(line 59) the Hoare annotation is: (and (not (let ((.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)))) (fp.eq .cse0 .cse0))) (fp.eq |ULTIMATE.start_fmin_float_#res| ULTIMATE.start_main_~x~0) (not (fp.eq ULTIMATE.start___fpclassify_float_~x ULTIMATE.start___fpclassify_float_~x)) (= ULTIMATE.start_fmin_float_~y ULTIMATE.start_main_~y~0) (fp.eq ULTIMATE.start_fmin_float_~x ULTIMATE.start_main_~x~0) (= (_ bv1 32) |ULTIMATE.start_isnan_float_#res|) (fp.eq ULTIMATE.start_main_~res~0 ULTIMATE.start_main_~x~0) (not (fp.eq ULTIMATE.start_fmin_float_~y ULTIMATE.start_fmin_float_~y))) [2020-12-01 15:38:45,671 INFO L262 CegarLoopResult]: For program point L76(line 76) no Hoare annotation was computed. [2020-12-01 15:38:45,671 INFO L262 CegarLoopResult]: For program point L43(line 43) no Hoare annotation was computed. [2020-12-01 15:38:45,671 INFO L262 CegarLoopResult]: For program point L76-2(lines 76 79) no Hoare annotation was computed. [2020-12-01 15:38:45,672 INFO L262 CegarLoopResult]: For program point L43-2(line 43) no Hoare annotation was computed. [2020-12-01 15:38:45,672 INFO L258 CegarLoopResult]: At program point L43-3(lines 37 44) the Hoare annotation is: (let ((.cse1 (= ULTIMATE.start_fmin_float_~y ULTIMATE.start_main_~y~0)) (.cse2 (not (fp.eq ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~x~0))) (.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)))) (or (and (not (fp.eq .cse0 .cse0)) (fp.eq |ULTIMATE.start_fmin_float_#res| ULTIMATE.start_main_~x~0) (not (fp.eq ULTIMATE.start___fpclassify_float_~x ULTIMATE.start___fpclassify_float_~x)) .cse1 (fp.eq ULTIMATE.start_fmin_float_~x ULTIMATE.start_main_~x~0) (= (_ bv1 32) |ULTIMATE.start_isnan_float_#res|) (not (fp.eq ULTIMATE.start_fmin_float_~y ULTIMATE.start_fmin_float_~y))) (and (= ULTIMATE.start_main_~y~0 |ULTIMATE.start_fmin_float_#res|) .cse1 (= (_ bv0 32) |ULTIMATE.start_isnan_float_#res|) (fp.eq ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0) .cse2) (and (fp.eq |ULTIMATE.start_fmin_float_#res| ULTIMATE.start_main_~y~0) (= ULTIMATE.start_fmin_float_~y ULTIMATE.start___fpclassify_float_~x) .cse1 (not (fp.eq ULTIMATE.start_fmin_float_~x ULTIMATE.start_fmin_float_~x)) .cse2 (= ULTIMATE.start_fmin_float_~y .cse0)))) [2020-12-01 15:38:45,773 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.12 03:38:45 BoogieIcfgContainer [2020-12-01 15:38:45,773 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-01 15:38:45,774 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-01 15:38:45,774 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-01 15:38:45,774 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-01 15:38:45,775 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 03:38:11" (3/4) ... [2020-12-01 15:38:45,779 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-01 15:38:45,806 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 22 nodes and edges [2020-12-01 15:38:45,808 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2020-12-01 15:38:45,810 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2020-12-01 15:38:45,811 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-01 15:38:45,843 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (0bv32 == \result && ~fp.eq~FLOAT(x, x)) || (1bv32 == \result && !~fp.eq~FLOAT(x, x)) [2020-12-01 15:38:45,844 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((0bv32 == \result && ~fp.eq~FLOAT(y, y)) || (1bv32 == \result && !~fp.eq~FLOAT(y, y))) && aux-isnan_float(x) && !isnan_float(y)-aux) && !~fp.eq~FLOAT(x, x) [2020-12-01 15:38:45,844 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((1bv32 == \result && !aux-isnan_float(x) && !isnan_float(y)-aux) && !aux-(isnan_float(x) && !isnan_float(y)) || (!isnan_float(x) && isnan_float(y))-aux) && !~fp.eq~FLOAT(y, y)) && !~fp.eq~FLOAT(x, x)) || (((0bv32 == \result && !aux-isnan_float(x) && !isnan_float(y)-aux) && ~fp.eq~FLOAT(x, x)) && !aux-(isnan_float(x) && !isnan_float(y)) || (!isnan_float(x) && isnan_float(y))-aux) [2020-12-01 15:38:45,845 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((((0bv32 == \result && ~fp.eq~FLOAT(y, y)) || (1bv32 == \result && !~fp.eq~FLOAT(y, y))) && !aux-isnan_float(x) && !isnan_float(y)-aux) && ~fp.eq~FLOAT(x, x)) && !aux-(isnan_float(x) && !isnan_float(y)) || (!isnan_float(x) && isnan_float(y))-aux) && aux-!isnan_float(x) && isnan_float(y)-aux [2020-12-01 15:38:45,846 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((y == y && 0bv32 == \result) && !~fp.eq~FLOAT(x, x)) && ~fp.eq~FLOAT(y, y)) && !~fp.eq~FLOAT(x, x)) || (((((y == y && x == x) && 1bv32 == \result) && ~fp.eq~FLOAT(x, x)) && !~fp.eq~FLOAT(y, y)) && x == x) [2020-12-01 15:38:45,846 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((y == y && 0bv32 == \result) && !~fp.eq~FLOAT(x, x)) && ~fp.eq~FLOAT(y, y)) && !~fp.eq~FLOAT(x, x)) || (((((((x == ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]) && y == y) && !(0bv32 == \result)) && x == x) && 1bv32 == \result) && x == x) && !~fp.eq~FLOAT(y, y)) && ~fp.eq~FLOAT(~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]), ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]))) [2020-12-01 15:38:45,847 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((((((!~fp.eq~FLOAT(~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]), ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0])) && ~fp.eq~FLOAT(\result, x)) && !~fp.eq~FLOAT(x, x)) && y == y) && ~fp.eq~FLOAT(x, x)) && 1bv32 == \result) && !~fp.eq~FLOAT(y, y)) || ((((y == \result && y == y) && 0bv32 == \result) && ~fp.eq~FLOAT(y, y)) && !~fp.eq~FLOAT(x, x))) || (((((~fp.eq~FLOAT(\result, y) && y == x) && y == y) && !~fp.eq~FLOAT(x, x)) && !~fp.eq~FLOAT(x, x)) && y == ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0])) [2020-12-01 15:38:45,848 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((!~fp.eq~FLOAT(x, x) && y == y) && ~fp.eq~FLOAT(x, x)) && 1bv32 == \result) && !~fp.eq~FLOAT(y, y)) || (((((y == x && y == y) && 0bv32 == \result) && !~fp.eq~FLOAT(x, x)) && ~fp.eq~FLOAT(y, y)) && !~fp.eq~FLOAT(x, x)) [2020-12-01 15:38:45,849 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((((((~fp.eq~FLOAT(\result, y) && y == x) && y == y) && ~fp.eq~FLOAT(res, y)) && 1bv32 == \result) && !~fp.eq~FLOAT(x, x)) && !~fp.eq~FLOAT(x, x)) && y == ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0])) || (((((y == \result && y == res) && y == y) && 1bv32 == \result) && ~fp.eq~FLOAT(y, y)) && !~fp.eq~FLOAT(x, x))) || (((((((!~fp.eq~FLOAT(~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]), ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0])) && ~fp.eq~FLOAT(\result, x)) && y == y) && !~fp.eq~FLOAT(x, x)) && 0bv32 == \result) && ~fp.eq~FLOAT(x, x)) && ~fp.eq~FLOAT(res, x)) && !~fp.eq~FLOAT(y, y)) [2020-12-01 15:38:45,849 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((((!~fp.eq~FLOAT(x, x) && y == y) && ~fp.eq~FLOAT(x, x)) && 1bv32 == \result) && !~fp.eq~FLOAT(y, y)) && 0bv32 == \result) && y == ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0])) || ((((((y == x && !(0bv32 == \result)) && y == y) && !~fp.eq~FLOAT(x, x)) && ~fp.eq~FLOAT(y, y)) && !~fp.eq~FLOAT(x, x)) && y == ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0])) [2020-12-01 15:38:45,850 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((((y == \result && y == res) && y == y) && 0bv32 == \result) && ~fp.eq~FLOAT(y, y)) && aux-isnan_float(x) && !isnan_float(y)-aux) && !~fp.eq~FLOAT(x, x)) || ((((((((~fp.eq~FLOAT(\result, y) && y == x) && y == y) && 0bv32 == \result) && ~fp.eq~FLOAT(res, y)) && !~fp.eq~FLOAT(x, x)) && aux-isnan_float(x) && !isnan_float(y)-aux) && !~fp.eq~FLOAT(x, x)) && y == ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0])) [2020-12-01 15:38:45,851 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (1bv32 == \result && !~fp.eq~FLOAT(x, x)) || (((((((!~fp.eq~FLOAT(~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]), ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0])) && ~fp.eq~FLOAT(\result, x)) && y == y) && !~fp.eq~FLOAT(x, x)) && 0bv32 == \result) && ~fp.eq~FLOAT(x, x)) && ~fp.eq~FLOAT(res, x)) && !~fp.eq~FLOAT(y, y)) [2020-12-01 15:38:45,852 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((((!~fp.eq~FLOAT(~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]), ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0])) && ~fp.eq~FLOAT(\result, x)) && !~fp.eq~FLOAT(x, x)) && y == y) && ~fp.eq~FLOAT(x, x)) && 1bv32 == \result) && ~fp.eq~FLOAT(res, x)) && !~fp.eq~FLOAT(y, y) [2020-12-01 15:38:45,893 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_cfcd9a63-28cb-4621-b570-8c9c2ee9e7bc/bin/uautomizer/witness.graphml [2020-12-01 15:38:45,893 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-01 15:38:45,894 INFO L168 Benchmark]: Toolchain (without parser) took 35975.41 ms. Allocated memory was 56.6 MB in the beginning and 142.6 MB in the end (delta: 86.0 MB). Free memory was 34.9 MB in the beginning and 118.2 MB in the end (delta: -83.2 MB). Peak memory consumption was 4.6 MB. Max. memory is 16.1 GB. [2020-12-01 15:38:45,895 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 56.6 MB. Free memory is still 39.0 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-12-01 15:38:45,896 INFO L168 Benchmark]: CACSL2BoogieTranslator took 326.87 ms. Allocated memory is still 56.6 MB. Free memory was 34.7 MB in the beginning and 37.5 MB in the end (delta: -2.7 MB). Peak memory consumption was 11.3 MB. Max. memory is 16.1 GB. [2020-12-01 15:38:45,896 INFO L168 Benchmark]: Boogie Procedure Inliner took 50.88 ms. Allocated memory is still 56.6 MB. Free memory was 37.5 MB in the beginning and 35.5 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-01 15:38:45,896 INFO L168 Benchmark]: Boogie Preprocessor took 39.86 ms. Allocated memory is still 56.6 MB. Free memory was 35.5 MB in the beginning and 33.7 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-01 15:38:45,897 INFO L168 Benchmark]: RCFGBuilder took 817.91 ms. Allocated memory was 56.6 MB in the beginning and 71.3 MB in the end (delta: 14.7 MB). Free memory was 33.7 MB in the beginning and 38.0 MB in the end (delta: -4.3 MB). Peak memory consumption was 10.0 MB. Max. memory is 16.1 GB. [2020-12-01 15:38:45,898 INFO L168 Benchmark]: TraceAbstraction took 34598.99 ms. Allocated memory was 71.3 MB in the beginning and 142.6 MB in the end (delta: 71.3 MB). Free memory was 37.5 MB in the beginning and 123.4 MB in the end (delta: -85.9 MB). Peak memory consumption was 67.3 MB. Max. memory is 16.1 GB. [2020-12-01 15:38:45,898 INFO L168 Benchmark]: Witness Printer took 119.94 ms. Allocated memory is still 142.6 MB. Free memory was 123.4 MB in the beginning and 118.2 MB in the end (delta: 5.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-12-01 15:38:45,901 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12 ms. Allocated memory is still 56.6 MB. Free memory is still 39.0 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 326.87 ms. Allocated memory is still 56.6 MB. Free memory was 34.7 MB in the beginning and 37.5 MB in the end (delta: -2.7 MB). Peak memory consumption was 11.3 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 50.88 ms. Allocated memory is still 56.6 MB. Free memory was 37.5 MB in the beginning and 35.5 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 39.86 ms. Allocated memory is still 56.6 MB. Free memory was 35.5 MB in the beginning and 33.7 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 817.91 ms. Allocated memory was 56.6 MB in the beginning and 71.3 MB in the end (delta: 14.7 MB). Free memory was 33.7 MB in the beginning and 38.0 MB in the end (delta: -4.3 MB). Peak memory consumption was 10.0 MB. Max. memory is 16.1 GB. * TraceAbstraction took 34598.99 ms. Allocated memory was 71.3 MB in the beginning and 142.6 MB in the end (delta: 71.3 MB). Free memory was 37.5 MB in the beginning and 123.4 MB in the end (delta: -85.9 MB). Peak memory consumption was 67.3 MB. Max. memory is 16.1 GB. * Witness Printer took 119.94 ms. Allocated memory is still 142.6 MB. Free memory was 123.4 MB in the beginning and 118.2 MB in the end (delta: 5.2 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 - 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 2 specifications checked. All of them hold - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: ((((y == y && 0bv32 == \result) && !~fp.eq~FLOAT(x, x)) && ~fp.eq~FLOAT(y, y)) && !~fp.eq~FLOAT(x, x)) || (((((y == y && x == x) && 1bv32 == \result) && ~fp.eq~FLOAT(x, x)) && !~fp.eq~FLOAT(y, y)) && x == x) - InvariantResult [Line: 59]: Loop Invariant Derived loop invariant: (((0bv32 == \result && ~fp.eq~FLOAT(y, y)) || (1bv32 == \result && !~fp.eq~FLOAT(y, y))) && aux-isnan_float(x) && !isnan_float(y)-aux) && !~fp.eq~FLOAT(x, x) - InvariantResult [Line: 59]: Loop Invariant Derived loop invariant: (0bv32 == \result && ~fp.eq~FLOAT(x, x)) || (1bv32 == \result && !~fp.eq~FLOAT(x, x)) - InvariantResult [Line: 37]: Loop Invariant Derived loop invariant: (((((((!~fp.eq~FLOAT(~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]), ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0])) && ~fp.eq~FLOAT(\result, x)) && !~fp.eq~FLOAT(x, x)) && y == y) && ~fp.eq~FLOAT(x, x)) && 1bv32 == \result) && !~fp.eq~FLOAT(y, y)) || ((((y == \result && y == y) && 0bv32 == \result) && ~fp.eq~FLOAT(y, y)) && !~fp.eq~FLOAT(x, x))) || (((((~fp.eq~FLOAT(\result, y) && y == x) && y == y) && !~fp.eq~FLOAT(x, x)) && !~fp.eq~FLOAT(x, x)) && y == ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0])) - InvariantResult [Line: 59]: Loop Invariant Derived loop invariant: ((((((!~fp.eq~FLOAT(~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]), ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0])) && ~fp.eq~FLOAT(\result, x)) && !~fp.eq~FLOAT(x, x)) && y == y) && ~fp.eq~FLOAT(x, x)) && 1bv32 == \result) && ~fp.eq~FLOAT(res, x)) && !~fp.eq~FLOAT(y, y) - InvariantResult [Line: 59]: Loop Invariant Derived loop invariant: (1bv32 == \result && !~fp.eq~FLOAT(x, x)) || (((((((!~fp.eq~FLOAT(~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]), ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0])) && ~fp.eq~FLOAT(\result, x)) && y == y) && !~fp.eq~FLOAT(x, x)) && 0bv32 == \result) && ~fp.eq~FLOAT(x, x)) && ~fp.eq~FLOAT(res, x)) && !~fp.eq~FLOAT(y, y)) - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: ((((!~fp.eq~FLOAT(x, x) && y == y) && ~fp.eq~FLOAT(x, x)) && 1bv32 == \result) && !~fp.eq~FLOAT(y, y)) || (((((y == x && y == y) && 0bv32 == \result) && !~fp.eq~FLOAT(x, x)) && ~fp.eq~FLOAT(y, y)) && !~fp.eq~FLOAT(x, x)) - InvariantResult [Line: 59]: Loop Invariant Derived loop invariant: ((((((y == \result && y == res) && y == y) && 0bv32 == \result) && ~fp.eq~FLOAT(y, y)) && aux-isnan_float(x) && !isnan_float(y)-aux) && !~fp.eq~FLOAT(x, x)) || ((((((((~fp.eq~FLOAT(\result, y) && y == x) && y == y) && 0bv32 == \result) && ~fp.eq~FLOAT(res, y)) && !~fp.eq~FLOAT(x, x)) && aux-isnan_float(x) && !isnan_float(y)-aux) && !~fp.eq~FLOAT(x, x)) && y == ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0])) - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: ((((((!~fp.eq~FLOAT(x, x) && y == y) && ~fp.eq~FLOAT(x, x)) && 1bv32 == \result) && !~fp.eq~FLOAT(y, y)) && 0bv32 == \result) && y == ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0])) || ((((((y == x && !(0bv32 == \result)) && y == y) && !~fp.eq~FLOAT(x, x)) && ~fp.eq~FLOAT(y, y)) && !~fp.eq~FLOAT(x, x)) && y == ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0])) - InvariantResult [Line: 59]: Loop Invariant Derived loop invariant: ((((((((~fp.eq~FLOAT(\result, y) && y == x) && y == y) && ~fp.eq~FLOAT(res, y)) && 1bv32 == \result) && !~fp.eq~FLOAT(x, x)) && !~fp.eq~FLOAT(x, x)) && y == ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0])) || (((((y == \result && y == res) && y == y) && 1bv32 == \result) && ~fp.eq~FLOAT(y, y)) && !~fp.eq~FLOAT(x, x))) || (((((((!~fp.eq~FLOAT(~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]), ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0])) && ~fp.eq~FLOAT(\result, x)) && y == y) && !~fp.eq~FLOAT(x, x)) && 0bv32 == \result) && ~fp.eq~FLOAT(x, x)) && ~fp.eq~FLOAT(res, x)) && !~fp.eq~FLOAT(y, y)) - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: ((((y == y && 0bv32 == \result) && !~fp.eq~FLOAT(x, x)) && ~fp.eq~FLOAT(y, y)) && !~fp.eq~FLOAT(x, x)) || (((((((x == ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]) && y == y) && !(0bv32 == \result)) && x == x) && 1bv32 == \result) && x == x) && !~fp.eq~FLOAT(y, y)) && ~fp.eq~FLOAT(~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]), ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]))) - InvariantResult [Line: 61]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 59]: Loop Invariant Derived loop invariant: (((((0bv32 == \result && ~fp.eq~FLOAT(y, y)) || (1bv32 == \result && !~fp.eq~FLOAT(y, y))) && !aux-isnan_float(x) && !isnan_float(y)-aux) && ~fp.eq~FLOAT(x, x)) && !aux-(isnan_float(x) && !isnan_float(y)) || (!isnan_float(x) && isnan_float(y))-aux) && aux-!isnan_float(x) && isnan_float(y)-aux - InvariantResult [Line: 59]: Loop Invariant Derived loop invariant: ((((1bv32 == \result && !aux-isnan_float(x) && !isnan_float(y)-aux) && !aux-(isnan_float(x) && !isnan_float(y)) || (!isnan_float(x) && isnan_float(y))-aux) && !~fp.eq~FLOAT(y, y)) && !~fp.eq~FLOAT(x, x)) || (((0bv32 == \result && !aux-isnan_float(x) && !isnan_float(y)-aux) && ~fp.eq~FLOAT(x, x)) && !aux-(isnan_float(x) && !isnan_float(y)) || (!isnan_float(x) && isnan_float(y))-aux) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 49 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 26.0s, OverallIterations: 19, TraceHistogramMax: 1, AutomataDifference: 14.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 8.3s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1146 SDtfs, 2441 SDslu, 4709 SDs, 0 SdLazy, 1986 SolverSat, 266 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 7.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1045 GetRequests, 770 SyntacticMatches, 10 SemanticMatches, 265 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 939 ImplicationChecksByTransitivity, 9.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=93occurred in iteration=7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 19 MinimizatonAttempts, 578 StatesRemovedByMinimization, 14 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 14 LocationsWithAnnotation, 14 PreInvPairs, 48 NumberOfFragments, 618 HoareAnnotationTreeSize, 14 FomulaSimplifications, 580250 FormulaSimplificationTreeSizeReduction, 0.9s HoareSimplificationTime, 14 FomulaSimplificationsInter, 84227 FormulaSimplificationTreeSizeReductionInter, 7.4s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 0.9s SatisfiabilityAnalysisTime, 5.5s InterpolantComputationTime, 479 NumberOfCodeBlocks, 479 NumberOfCodeBlocksAsserted, 19 NumberOfCheckSat, 920 ConstructedInterpolants, 31 QuantifiedInterpolants, 94558 SizeOfPredicates, 147 NumberOfNonLiveVariables, 1698 ConjunctsInSsa, 188 ConjunctsInUnsatCore, 38 InterpolantComputations, 38 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...