./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 a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_a45aaa96-b7cd-419d-bd08-1ee6d6267b9c/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_a45aaa96-b7cd-419d-bd08-1ee6d6267b9c/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_a45aaa96-b7cd-419d-bd08-1ee6d6267b9c/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_a45aaa96-b7cd-419d-bd08-1ee6d6267b9c/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1231.c -s /tmp/vcloud-vcloud-master/worker/run_dir_a45aaa96-b7cd-419d-bd08-1ee6d6267b9c/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_a45aaa96-b7cd-419d-bd08-1ee6d6267b9c/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_a45aaa96-b7cd-419d-bd08-1ee6d6267b9c/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_a45aaa96-b7cd-419d-bd08-1ee6d6267b9c/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_a45aaa96-b7cd-419d-bd08-1ee6d6267b9c/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_a45aaa96-b7cd-419d-bd08-1ee6d6267b9c/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1231.c -s /tmp/vcloud-vcloud-master/worker/run_dir_a45aaa96-b7cd-419d-bd08-1ee6d6267b9c/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_a45aaa96-b7cd-419d-bd08-1ee6d6267b9c/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-a4ecdab [2020-11-30 01:15:10,890 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-30 01:15:10,893 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-30 01:15:10,953 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-30 01:15:10,954 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-30 01:15:10,962 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-30 01:15:10,965 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-30 01:15:10,975 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-30 01:15:10,979 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-30 01:15:10,986 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-30 01:15:10,988 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-30 01:15:10,990 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-30 01:15:10,990 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-30 01:15:10,992 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-30 01:15:10,994 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-30 01:15:10,996 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-30 01:15:10,997 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-30 01:15:10,998 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-30 01:15:11,001 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-30 01:15:11,004 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-30 01:15:11,007 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-30 01:15:11,009 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-30 01:15:11,011 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-30 01:15:11,012 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-30 01:15:11,017 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-30 01:15:11,017 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-30 01:15:11,018 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-30 01:15:11,019 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-30 01:15:11,020 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-30 01:15:11,022 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-30 01:15:11,022 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-30 01:15:11,024 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-30 01:15:11,025 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-30 01:15:11,026 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-30 01:15:11,028 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-30 01:15:11,029 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-30 01:15:11,030 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-30 01:15:11,030 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-30 01:15:11,030 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-30 01:15:11,032 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-30 01:15:11,033 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-30 01:15:11,034 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_a45aaa96-b7cd-419d-bd08-1ee6d6267b9c/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-30 01:15:11,064 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-30 01:15:11,065 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-30 01:15:11,066 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-30 01:15:11,067 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-30 01:15:11,067 INFO L138 SettingsManager]: * Use SBE=true [2020-11-30 01:15:11,067 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-30 01:15:11,068 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-30 01:15:11,068 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-30 01:15:11,068 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-30 01:15:11,069 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-30 01:15:11,069 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-30 01:15:11,069 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-30 01:15:11,069 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-30 01:15:11,070 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-30 01:15:11,070 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-30 01:15:11,070 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-30 01:15:11,071 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-30 01:15:11,071 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-30 01:15:11,071 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-30 01:15:11,071 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-30 01:15:11,072 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-30 01:15:11,072 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-30 01:15:11,072 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-30 01:15:11,073 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-30 01:15:11,073 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-30 01:15:11,073 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-30 01:15:11,074 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-30 01:15:11,074 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-30 01:15:11,074 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-30 01:15:11,074 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_a45aaa96-b7cd-419d-bd08-1ee6d6267b9c/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_a45aaa96-b7cd-419d-bd08-1ee6d6267b9c/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8039b1e35b9e459b273890fa707790cd9b2d1812 [2020-11-30 01:15:11,422 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-30 01:15:11,462 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-30 01:15:11,465 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-30 01:15:11,467 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-30 01:15:11,468 INFO L275 PluginConnector]: CDTParser initialized [2020-11-30 01:15:11,469 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_a45aaa96-b7cd-419d-bd08-1ee6d6267b9c/bin/uautomizer/../../sv-benchmarks/c/float-newlib/float_req_bl_1231.c [2020-11-30 01:15:11,566 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_a45aaa96-b7cd-419d-bd08-1ee6d6267b9c/bin/uautomizer/data/101b0bdf4/efa5b5770bf24475902d9c0d61f97932/FLAGf85efe5ce [2020-11-30 01:15:12,218 INFO L306 CDTParser]: Found 1 translation units. [2020-11-30 01:15:12,219 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_a45aaa96-b7cd-419d-bd08-1ee6d6267b9c/sv-benchmarks/c/float-newlib/float_req_bl_1231.c [2020-11-30 01:15:12,228 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_a45aaa96-b7cd-419d-bd08-1ee6d6267b9c/bin/uautomizer/data/101b0bdf4/efa5b5770bf24475902d9c0d61f97932/FLAGf85efe5ce [2020-11-30 01:15:12,549 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_a45aaa96-b7cd-419d-bd08-1ee6d6267b9c/bin/uautomizer/data/101b0bdf4/efa5b5770bf24475902d9c0d61f97932 [2020-11-30 01:15:12,558 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-30 01:15:12,561 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-30 01:15:12,568 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-30 01:15:12,569 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-30 01:15:12,573 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-30 01:15:12,575 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 01:15:12" (1/1) ... [2020-11-30 01:15:12,578 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3f80749 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:15:12, skipping insertion in model container [2020-11-30 01:15:12,578 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 01:15:12" (1/1) ... [2020-11-30 01:15:12,588 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-30 01:15:12,616 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-30 01:15:12,881 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 01:15:12,892 INFO L203 MainTranslator]: Completed pre-run [2020-11-30 01:15:12,924 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 01:15:12,943 INFO L208 MainTranslator]: Completed translation [2020-11-30 01:15:12,944 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:15:12 WrapperNode [2020-11-30 01:15:12,945 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-30 01:15:12,946 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-30 01:15:12,946 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-30 01:15:12,947 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-30 01:15:12,961 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:15:12" (1/1) ... [2020-11-30 01:15:12,992 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:15:12" (1/1) ... [2020-11-30 01:15:13,042 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-30 01:15:13,044 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-30 01:15:13,045 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-30 01:15:13,045 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-30 01:15:13,056 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:15:12" (1/1) ... [2020-11-30 01:15:13,056 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:15:12" (1/1) ... [2020-11-30 01:15:13,072 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:15:12" (1/1) ... [2020-11-30 01:15:13,073 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:15:12" (1/1) ... [2020-11-30 01:15:13,081 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:15:12" (1/1) ... [2020-11-30 01:15:13,103 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:15:12" (1/1) ... [2020-11-30 01:15:13,106 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:15:12" (1/1) ... [2020-11-30 01:15:13,117 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-30 01:15:13,118 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-30 01:15:13,119 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-30 01:15:13,119 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-30 01:15:13,120 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:15:12" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a45aaa96-b7cd-419d-bd08-1ee6d6267b9c/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-30 01:15:13,221 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-30 01:15:13,222 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-30 01:15:13,222 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-11-30 01:15:13,222 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-30 01:15:13,222 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-30 01:15:13,223 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-30 01:15:13,223 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-30 01:15:14,086 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-30 01:15:14,086 INFO L298 CfgBuilder]: Removed 34 assume(true) statements. [2020-11-30 01:15:14,089 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 01:15:14 BoogieIcfgContainer [2020-11-30 01:15:14,090 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-30 01:15:14,093 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-30 01:15:14,093 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-30 01:15:14,097 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-30 01:15:14,097 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.11 01:15:12" (1/3) ... [2020-11-30 01:15:14,098 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d2e1bc0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 01:15:14, skipping insertion in model container [2020-11-30 01:15:14,098 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:15:12" (2/3) ... [2020-11-30 01:15:14,099 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d2e1bc0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 01:15:14, skipping insertion in model container [2020-11-30 01:15:14,100 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 01:15:14" (3/3) ... [2020-11-30 01:15:14,101 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_1231.c [2020-11-30 01:15:14,118 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-30 01:15:14,124 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-11-30 01:15:14,139 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-11-30 01:15:14,186 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-30 01:15:14,187 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-30 01:15:14,187 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-30 01:15:14,187 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-30 01:15:14,187 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-30 01:15:14,188 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-30 01:15:14,188 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-30 01:15:14,188 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-30 01:15:14,210 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states. [2020-11-30 01:15:14,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-11-30 01:15:14,220 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:15:14,221 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:15:14,222 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 01:15:14,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:15:14,229 INFO L82 PathProgramCache]: Analyzing trace with hash 1204154757, now seen corresponding path program 1 times [2020-11-30 01:15:14,240 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:15:14,241 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [885571024] [2020-11-30 01:15:14,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:15:14,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:15:14,508 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:15:14,509 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [885571024] [2020-11-30 01:15:14,510 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:15:14,510 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-30 01:15:14,511 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2083693158] [2020-11-30 01:15:14,517 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-30 01:15:14,517 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 01:15:14,534 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-30 01:15:14,536 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-30 01:15:14,539 INFO L87 Difference]: Start difference. First operand 49 states. Second operand 4 states. [2020-11-30 01:15:14,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:15:14,641 INFO L93 Difference]: Finished difference Result 92 states and 136 transitions. [2020-11-30 01:15:14,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-30 01:15:14,646 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 16 [2020-11-30 01:15:14,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:15:14,668 INFO L225 Difference]: With dead ends: 92 [2020-11-30 01:15:14,668 INFO L226 Difference]: Without dead ends: 50 [2020-11-30 01:15:14,674 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-30 01:15:14,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-11-30 01:15:14,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 45. [2020-11-30 01:15:14,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-11-30 01:15:14,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 60 transitions. [2020-11-30 01:15:14,733 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 60 transitions. Word has length 16 [2020-11-30 01:15:14,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:15:14,734 INFO L481 AbstractCegarLoop]: Abstraction has 45 states and 60 transitions. [2020-11-30 01:15:14,735 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-30 01:15:14,735 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 60 transitions. [2020-11-30 01:15:14,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-11-30 01:15:14,738 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:15:14,738 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:15:14,739 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-30 01:15:14,739 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 01:15:14,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:15:14,743 INFO L82 PathProgramCache]: Analyzing trace with hash 44236684, now seen corresponding path program 1 times [2020-11-30 01:15:14,744 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:15:14,744 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1752709082] [2020-11-30 01:15:14,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:15:14,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:15:14,917 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:15:14,917 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1752709082] [2020-11-30 01:15:14,917 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:15:14,918 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-30 01:15:14,918 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [546718472] [2020-11-30 01:15:14,920 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-30 01:15:14,920 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 01:15:14,921 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-30 01:15:14,921 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-30 01:15:14,921 INFO L87 Difference]: Start difference. First operand 45 states and 60 transitions. Second operand 4 states. [2020-11-30 01:15:15,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:15:15,018 INFO L93 Difference]: Finished difference Result 77 states and 97 transitions. [2020-11-30 01:15:15,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-30 01:15:15,023 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 18 [2020-11-30 01:15:15,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:15:15,024 INFO L225 Difference]: With dead ends: 77 [2020-11-30 01:15:15,025 INFO L226 Difference]: Without dead ends: 64 [2020-11-30 01:15:15,026 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-30 01:15:15,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2020-11-30 01:15:15,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 47. [2020-11-30 01:15:15,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-11-30 01:15:15,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 62 transitions. [2020-11-30 01:15:15,045 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 62 transitions. Word has length 18 [2020-11-30 01:15:15,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:15:15,047 INFO L481 AbstractCegarLoop]: Abstraction has 47 states and 62 transitions. [2020-11-30 01:15:15,047 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-30 01:15:15,047 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 62 transitions. [2020-11-30 01:15:15,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-11-30 01:15:15,050 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:15:15,050 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:15:15,051 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-30 01:15:15,052 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 01:15:15,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:15:15,053 INFO L82 PathProgramCache]: Analyzing trace with hash -674173253, now seen corresponding path program 1 times [2020-11-30 01:15:15,053 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:15:15,054 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [319059824] [2020-11-30 01:15:15,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:15:15,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:15:15,172 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:15:15,172 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [319059824] [2020-11-30 01:15:15,173 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:15:15,173 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-30 01:15:15,173 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1116936418] [2020-11-30 01:15:15,174 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-30 01:15:15,174 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 01:15:15,175 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-30 01:15:15,177 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-30 01:15:15,178 INFO L87 Difference]: Start difference. First operand 47 states and 62 transitions. Second operand 4 states. [2020-11-30 01:15:15,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:15:15,291 INFO L93 Difference]: Finished difference Result 79 states and 99 transitions. [2020-11-30 01:15:15,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-30 01:15:15,295 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 19 [2020-11-30 01:15:15,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:15:15,297 INFO L225 Difference]: With dead ends: 79 [2020-11-30 01:15:15,297 INFO L226 Difference]: Without dead ends: 66 [2020-11-30 01:15:15,298 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-30 01:15:15,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-11-30 01:15:15,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 47. [2020-11-30 01:15:15,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-11-30 01:15:15,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 62 transitions. [2020-11-30 01:15:15,315 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 62 transitions. Word has length 19 [2020-11-30 01:15:15,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:15:15,315 INFO L481 AbstractCegarLoop]: Abstraction has 47 states and 62 transitions. [2020-11-30 01:15:15,316 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-30 01:15:15,317 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 62 transitions. [2020-11-30 01:15:15,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-11-30 01:15:15,319 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:15:15,319 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] [2020-11-30 01:15:15,319 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-30 01:15:15,320 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 01:15:15,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:15:15,322 INFO L82 PathProgramCache]: Analyzing trace with hash -1345927737, now seen corresponding path program 1 times [2020-11-30 01:15:15,322 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:15:15,322 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1579658960] [2020-11-30 01:15:15,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:15:15,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:15:15,434 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:15:15,434 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1579658960] [2020-11-30 01:15:15,435 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:15:15,435 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-30 01:15:15,435 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [714588800] [2020-11-30 01:15:15,436 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-30 01:15:15,436 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 01:15:15,437 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-30 01:15:15,437 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-30 01:15:15,437 INFO L87 Difference]: Start difference. First operand 47 states and 62 transitions. Second operand 4 states. [2020-11-30 01:15:15,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:15:15,519 INFO L93 Difference]: Finished difference Result 81 states and 101 transitions. [2020-11-30 01:15:15,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-30 01:15:15,521 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 20 [2020-11-30 01:15:15,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:15:15,523 INFO L225 Difference]: With dead ends: 81 [2020-11-30 01:15:15,523 INFO L226 Difference]: Without dead ends: 68 [2020-11-30 01:15:15,524 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-30 01:15:15,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-11-30 01:15:15,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 47. [2020-11-30 01:15:15,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-11-30 01:15:15,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 62 transitions. [2020-11-30 01:15:15,538 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 62 transitions. Word has length 20 [2020-11-30 01:15:15,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:15:15,538 INFO L481 AbstractCegarLoop]: Abstraction has 47 states and 62 transitions. [2020-11-30 01:15:15,539 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-30 01:15:15,539 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 62 transitions. [2020-11-30 01:15:15,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-11-30 01:15:15,540 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:15:15,540 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] [2020-11-30 01:15:15,540 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-30 01:15:15,541 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 01:15:15,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:15:15,541 INFO L82 PathProgramCache]: Analyzing trace with hash -1380709804, now seen corresponding path program 1 times [2020-11-30 01:15:15,541 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:15:15,542 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1107271173] [2020-11-30 01:15:15,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:15:15,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:15:15,645 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:15:15,646 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1107271173] [2020-11-30 01:15:15,646 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:15:15,646 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-30 01:15:15,646 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1203827530] [2020-11-30 01:15:15,647 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-30 01:15:15,647 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 01:15:15,648 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 01:15:15,648 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 01:15:15,648 INFO L87 Difference]: Start difference. First operand 47 states and 62 transitions. Second operand 3 states. [2020-11-30 01:15:15,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:15:15,672 INFO L93 Difference]: Finished difference Result 50 states and 65 transitions. [2020-11-30 01:15:15,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 01:15:15,673 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 21 [2020-11-30 01:15:15,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:15:15,674 INFO L225 Difference]: With dead ends: 50 [2020-11-30 01:15:15,674 INFO L226 Difference]: Without dead ends: 48 [2020-11-30 01:15:15,674 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 [2020-11-30 01:15:15,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-11-30 01:15:15,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2020-11-30 01:15:15,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2020-11-30 01:15:15,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 63 transitions. [2020-11-30 01:15:15,687 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 63 transitions. Word has length 21 [2020-11-30 01:15:15,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:15:15,688 INFO L481 AbstractCegarLoop]: Abstraction has 48 states and 63 transitions. [2020-11-30 01:15:15,688 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-30 01:15:15,688 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 63 transitions. [2020-11-30 01:15:15,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-11-30 01:15:15,689 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:15:15,689 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:15:15,690 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-30 01:15:15,690 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 01:15:15,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:15:15,690 INFO L82 PathProgramCache]: Analyzing trace with hash 147544209, now seen corresponding path program 1 times [2020-11-30 01:15:15,691 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:15:15,691 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1980467597] [2020-11-30 01:15:15,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:15:15,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:15:15,758 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:15:15,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:15:15,787 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:15:15,817 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 01:15:15,817 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-30 01:15:15,818 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-30 01:15:15,861 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.11 01:15:15 BoogieIcfgContainer [2020-11-30 01:15:15,861 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-30 01:15:15,862 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-30 01:15:15,862 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-30 01:15:15,863 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-30 01:15:15,863 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 01:15:14" (3/4) ... [2020-11-30 01:15:15,867 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-11-30 01:15:15,868 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-30 01:15:15,870 INFO L168 Benchmark]: Toolchain (without parser) took 3307.36 ms. Allocated memory is still 90.2 MB. Free memory was 60.7 MB in the beginning and 36.9 MB in the end (delta: 23.8 MB). Peak memory consumption was 25.8 MB. Max. memory is 16.1 GB. [2020-11-30 01:15:15,871 INFO L168 Benchmark]: CDTParser took 0.34 ms. Allocated memory is still 71.3 MB. Free memory was 38.3 MB in the beginning and 38.2 MB in the end (delta: 55.6 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 01:15:15,872 INFO L168 Benchmark]: CACSL2BoogieTranslator took 376.74 ms. Allocated memory is still 90.2 MB. Free memory was 60.5 MB in the beginning and 50.1 MB in the end (delta: 10.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-30 01:15:15,873 INFO L168 Benchmark]: Boogie Procedure Inliner took 96.30 ms. Allocated memory is still 90.2 MB. Free memory was 50.0 MB in the beginning and 48.0 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 01:15:15,874 INFO L168 Benchmark]: Boogie Preprocessor took 73.39 ms. Allocated memory is still 90.2 MB. Free memory was 48.0 MB in the beginning and 46.3 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 01:15:15,875 INFO L168 Benchmark]: RCFGBuilder took 971.57 ms. Allocated memory is still 90.2 MB. Free memory was 46.3 MB in the beginning and 48.2 MB in the end (delta: -1.8 MB). Peak memory consumption was 5.4 MB. Max. memory is 16.1 GB. [2020-11-30 01:15:15,884 INFO L168 Benchmark]: TraceAbstraction took 1769.00 ms. Allocated memory is still 90.2 MB. Free memory was 47.9 MB in the beginning and 36.9 MB in the end (delta: 10.9 MB). Peak memory consumption was 12.0 MB. Max. memory is 16.1 GB. [2020-11-30 01:15:15,885 INFO L168 Benchmark]: Witness Printer took 5.62 ms. Allocated memory is still 90.2 MB. Free memory is still 36.9 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 01:15:15,889 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34 ms. Allocated memory is still 71.3 MB. Free memory was 38.3 MB in the beginning and 38.2 MB in the end (delta: 55.6 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 376.74 ms. Allocated memory is still 90.2 MB. Free memory was 60.5 MB in the beginning and 50.1 MB in the end (delta: 10.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 96.30 ms. Allocated memory is still 90.2 MB. Free memory was 50.0 MB in the beginning and 48.0 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 73.39 ms. Allocated memory is still 90.2 MB. Free memory was 48.0 MB in the beginning and 46.3 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 971.57 ms. Allocated memory is still 90.2 MB. Free memory was 46.3 MB in the beginning and 48.2 MB in the end (delta: -1.8 MB). Peak memory consumption was 5.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1769.00 ms. Allocated memory is still 90.2 MB. Free memory was 47.9 MB in the beginning and 36.9 MB in the end (delta: 10.9 MB). Peak memory consumption was 12.0 MB. Max. memory is 16.1 GB. * Witness Printer took 5.62 ms. Allocated memory is still 90.2 MB. Free memory is still 36.9 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: 1.6s, 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, 0.2s 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: 0.1s AutomataMinimizationTime, 5 MinimizatonAttempts, 62 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.3s 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-a4ecdab [2020-11-30 01:15:19,001 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-30 01:15:19,006 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-30 01:15:19,085 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-30 01:15:19,085 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-30 01:15:19,092 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-30 01:15:19,096 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-30 01:15:19,101 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-30 01:15:19,105 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-30 01:15:19,113 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-30 01:15:19,115 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-30 01:15:19,124 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-30 01:15:19,125 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-30 01:15:19,129 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-30 01:15:19,131 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-30 01:15:19,133 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-30 01:15:19,135 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-30 01:15:19,139 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-30 01:15:19,144 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-30 01:15:19,155 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-30 01:15:19,161 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-30 01:15:19,167 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-30 01:15:19,169 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-30 01:15:19,170 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-30 01:15:19,174 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-30 01:15:19,174 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-30 01:15:19,175 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-30 01:15:19,176 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-30 01:15:19,177 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-30 01:15:19,178 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-30 01:15:19,179 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-30 01:15:19,185 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-30 01:15:19,188 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-30 01:15:19,189 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-30 01:15:19,190 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-30 01:15:19,190 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-30 01:15:19,192 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-30 01:15:19,192 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-30 01:15:19,192 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-30 01:15:19,195 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-30 01:15:19,196 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-30 01:15:19,197 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_a45aaa96-b7cd-419d-bd08-1ee6d6267b9c/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2020-11-30 01:15:19,257 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-30 01:15:19,257 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-30 01:15:19,261 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-30 01:15:19,262 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-30 01:15:19,262 INFO L138 SettingsManager]: * Use SBE=true [2020-11-30 01:15:19,263 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-30 01:15:19,263 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-30 01:15:19,263 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-30 01:15:19,264 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-30 01:15:19,264 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-30 01:15:19,265 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-30 01:15:19,265 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-30 01:15:19,266 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-11-30 01:15:19,266 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-11-30 01:15:19,266 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-30 01:15:19,266 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-30 01:15:19,267 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-30 01:15:19,267 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-30 01:15:19,267 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-30 01:15:19,267 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-30 01:15:19,268 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-30 01:15:19,268 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-30 01:15:19,268 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-30 01:15:19,269 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-30 01:15:19,269 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-30 01:15:19,269 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-30 01:15:19,269 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2020-11-30 01:15:19,269 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-11-30 01:15:19,270 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-30 01:15:19,270 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-30 01:15:19,270 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-30 01:15:19,270 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_a45aaa96-b7cd-419d-bd08-1ee6d6267b9c/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_a45aaa96-b7cd-419d-bd08-1ee6d6267b9c/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8039b1e35b9e459b273890fa707790cd9b2d1812 [2020-11-30 01:15:19,782 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-30 01:15:19,822 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-30 01:15:19,827 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-30 01:15:19,829 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-30 01:15:19,830 INFO L275 PluginConnector]: CDTParser initialized [2020-11-30 01:15:19,832 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_a45aaa96-b7cd-419d-bd08-1ee6d6267b9c/bin/uautomizer/../../sv-benchmarks/c/float-newlib/float_req_bl_1231.c [2020-11-30 01:15:19,922 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_a45aaa96-b7cd-419d-bd08-1ee6d6267b9c/bin/uautomizer/data/46b317e7a/5fffbaedbc9d49a3bc8fd6ca84781eeb/FLAGffdd261f2 [2020-11-30 01:15:20,698 INFO L306 CDTParser]: Found 1 translation units. [2020-11-30 01:15:20,703 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_a45aaa96-b7cd-419d-bd08-1ee6d6267b9c/sv-benchmarks/c/float-newlib/float_req_bl_1231.c [2020-11-30 01:15:20,712 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_a45aaa96-b7cd-419d-bd08-1ee6d6267b9c/bin/uautomizer/data/46b317e7a/5fffbaedbc9d49a3bc8fd6ca84781eeb/FLAGffdd261f2 [2020-11-30 01:15:21,035 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_a45aaa96-b7cd-419d-bd08-1ee6d6267b9c/bin/uautomizer/data/46b317e7a/5fffbaedbc9d49a3bc8fd6ca84781eeb [2020-11-30 01:15:21,038 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-30 01:15:21,040 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-30 01:15:21,042 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-30 01:15:21,042 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-30 01:15:21,047 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-30 01:15:21,048 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 01:15:21" (1/1) ... [2020-11-30 01:15:21,050 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6be891c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:15:21, skipping insertion in model container [2020-11-30 01:15:21,051 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 01:15:21" (1/1) ... [2020-11-30 01:15:21,061 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-30 01:15:21,081 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-30 01:15:21,324 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 01:15:21,349 INFO L203 MainTranslator]: Completed pre-run [2020-11-30 01:15:21,481 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 01:15:21,516 INFO L208 MainTranslator]: Completed translation [2020-11-30 01:15:21,518 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:15:21 WrapperNode [2020-11-30 01:15:21,518 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-30 01:15:21,520 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-30 01:15:21,520 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-30 01:15:21,523 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-30 01:15:21,532 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:15:21" (1/1) ... [2020-11-30 01:15:21,569 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:15:21" (1/1) ... [2020-11-30 01:15:21,622 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-30 01:15:21,626 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-30 01:15:21,626 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-30 01:15:21,627 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-30 01:15:21,637 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:15:21" (1/1) ... [2020-11-30 01:15:21,638 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:15:21" (1/1) ... [2020-11-30 01:15:21,662 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:15:21" (1/1) ... [2020-11-30 01:15:21,663 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:15:21" (1/1) ... [2020-11-30 01:15:21,675 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:15:21" (1/1) ... [2020-11-30 01:15:21,693 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:15:21" (1/1) ... [2020-11-30 01:15:21,699 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:15:21" (1/1) ... [2020-11-30 01:15:21,711 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-30 01:15:21,722 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-30 01:15:21,722 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-30 01:15:21,722 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-30 01:15:21,723 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:15:21" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a45aaa96-b7cd-419d-bd08-1ee6d6267b9c/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-30 01:15:21,813 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-11-30 01:15:21,814 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-30 01:15:21,814 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2020-11-30 01:15:21,815 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-30 01:15:21,815 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-30 01:15:21,815 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2020-11-30 01:15:21,815 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-30 01:15:22,739 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-30 01:15:22,739 INFO L298 CfgBuilder]: Removed 34 assume(true) statements. [2020-11-30 01:15:22,741 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 01:15:22 BoogieIcfgContainer [2020-11-30 01:15:22,741 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-30 01:15:22,743 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-30 01:15:22,743 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-30 01:15:22,746 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-30 01:15:22,746 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.11 01:15:21" (1/3) ... [2020-11-30 01:15:22,747 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56941549 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 01:15:22, skipping insertion in model container [2020-11-30 01:15:22,747 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:15:21" (2/3) ... [2020-11-30 01:15:22,748 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56941549 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 01:15:22, skipping insertion in model container [2020-11-30 01:15:22,748 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 01:15:22" (3/3) ... [2020-11-30 01:15:22,749 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_1231.c [2020-11-30 01:15:22,764 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-30 01:15:22,770 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-11-30 01:15:22,786 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-11-30 01:15:22,818 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-30 01:15:22,818 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-30 01:15:22,818 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-30 01:15:22,818 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-30 01:15:22,819 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-30 01:15:22,819 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-30 01:15:22,819 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-30 01:15:22,819 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-30 01:15:22,837 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states. [2020-11-30 01:15:22,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-11-30 01:15:22,844 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:15:22,845 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:15:22,846 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 01:15:22,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:15:22,853 INFO L82 PathProgramCache]: Analyzing trace with hash 1204154757, now seen corresponding path program 1 times [2020-11-30 01:15:22,868 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-30 01:15:22,869 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1736153936] [2020-11-30 01:15:22,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a45aaa96-b7cd-419d-bd08-1ee6d6267b9c/bin/uautomizer/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2020-11-30 01:15:23,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:15:23,027 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 1 conjunts are in the unsatisfiable core [2020-11-30 01:15:23,034 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:15:23,057 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:15:23,058 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 01:15:23,065 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:15:23,066 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1736153936] [2020-11-30 01:15:23,067 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:15:23,067 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-11-30 01:15:23,068 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1408236480] [2020-11-30 01:15:23,074 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-30 01:15:23,075 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-30 01:15:23,091 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-30 01:15:23,092 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-30 01:15:23,094 INFO L87 Difference]: Start difference. First operand 49 states. Second operand 2 states. [2020-11-30 01:15:23,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:15:23,120 INFO L93 Difference]: Finished difference Result 84 states and 124 transitions. [2020-11-30 01:15:23,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-30 01:15:23,122 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 16 [2020-11-30 01:15:23,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:15:23,144 INFO L225 Difference]: With dead ends: 84 [2020-11-30 01:15:23,144 INFO L226 Difference]: Without dead ends: 43 [2020-11-30 01:15:23,148 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 [2020-11-30 01:15:23,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2020-11-30 01:15:23,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2020-11-30 01:15:23,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-11-30 01:15:23,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 58 transitions. [2020-11-30 01:15:23,193 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 58 transitions. Word has length 16 [2020-11-30 01:15:23,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:15:23,194 INFO L481 AbstractCegarLoop]: Abstraction has 43 states and 58 transitions. [2020-11-30 01:15:23,194 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-30 01:15:23,195 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 58 transitions. [2020-11-30 01:15:23,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-11-30 01:15:23,196 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:15:23,196 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:15:23,413 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-11-30 01:15:23,413 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 01:15:23,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:15:23,414 INFO L82 PathProgramCache]: Analyzing trace with hash 1262247077, now seen corresponding path program 1 times [2020-11-30 01:15:23,415 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-30 01:15:23,416 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1536034301] [2020-11-30 01:15:23,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a45aaa96-b7cd-419d-bd08-1ee6d6267b9c/bin/uautomizer/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2020-11-30 01:15:23,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:15:23,642 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 3 conjunts are in the unsatisfiable core [2020-11-30 01:15:23,644 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:15:23,742 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:15:23,742 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 01:15:23,748 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:15:23,749 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1536034301] [2020-11-30 01:15:23,749 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:15:23,749 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2020-11-30 01:15:23,749 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1329652716] [2020-11-30 01:15:23,751 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-30 01:15:23,751 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-30 01:15:23,753 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-30 01:15:23,753 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-30 01:15:23,753 INFO L87 Difference]: Start difference. First operand 43 states and 58 transitions. Second operand 4 states. [2020-11-30 01:15:23,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:15:23,856 INFO L93 Difference]: Finished difference Result 82 states and 111 transitions. [2020-11-30 01:15:23,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-30 01:15:23,858 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-11-30 01:15:23,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:15:23,859 INFO L225 Difference]: With dead ends: 82 [2020-11-30 01:15:23,859 INFO L226 Difference]: Without dead ends: 50 [2020-11-30 01:15:23,861 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 [2020-11-30 01:15:23,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-11-30 01:15:23,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 45. [2020-11-30 01:15:23,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-11-30 01:15:23,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 60 transitions. [2020-11-30 01:15:23,870 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 60 transitions. Word has length 17 [2020-11-30 01:15:23,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:15:23,871 INFO L481 AbstractCegarLoop]: Abstraction has 45 states and 60 transitions. [2020-11-30 01:15:23,871 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-30 01:15:23,871 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 60 transitions. [2020-11-30 01:15:23,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-11-30 01:15:23,872 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:15:23,873 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:15:24,083 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-11-30 01:15:24,084 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 01:15:24,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:15:24,085 INFO L82 PathProgramCache]: Analyzing trace with hash 44236684, now seen corresponding path program 1 times [2020-11-30 01:15:24,085 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-30 01:15:24,086 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [333289034] [2020-11-30 01:15:24,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a45aaa96-b7cd-419d-bd08-1ee6d6267b9c/bin/uautomizer/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2020-11-30 01:15:24,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:15:24,217 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 3 conjunts are in the unsatisfiable core [2020-11-30 01:15:24,219 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:15:24,278 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:15:24,279 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 01:15:24,310 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:15:24,319 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [333289034] [2020-11-30 01:15:24,320 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:15:24,320 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2020-11-30 01:15:24,320 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1668352512] [2020-11-30 01:15:24,321 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-30 01:15:24,322 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-30 01:15:24,323 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-30 01:15:24,324 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-30 01:15:24,324 INFO L87 Difference]: Start difference. First operand 45 states and 60 transitions. Second operand 6 states. [2020-11-30 01:15:24,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:15:24,510 INFO L93 Difference]: Finished difference Result 96 states and 120 transitions. [2020-11-30 01:15:24,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-30 01:15:24,511 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 18 [2020-11-30 01:15:24,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:15:24,513 INFO L225 Difference]: With dead ends: 96 [2020-11-30 01:15:24,513 INFO L226 Difference]: Without dead ends: 83 [2020-11-30 01:15:24,514 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-11-30 01:15:24,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2020-11-30 01:15:24,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 47. [2020-11-30 01:15:24,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-11-30 01:15:24,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 62 transitions. [2020-11-30 01:15:24,525 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 62 transitions. Word has length 18 [2020-11-30 01:15:24,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:15:24,526 INFO L481 AbstractCegarLoop]: Abstraction has 47 states and 62 transitions. [2020-11-30 01:15:24,526 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-30 01:15:24,526 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 62 transitions. [2020-11-30 01:15:24,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-11-30 01:15:24,528 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:15:24,528 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] [2020-11-30 01:15:24,743 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-11-30 01:15:24,744 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 01:15:24,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:15:24,745 INFO L82 PathProgramCache]: Analyzing trace with hash -1380709804, now seen corresponding path program 1 times [2020-11-30 01:15:24,745 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-30 01:15:24,746 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1905051512] [2020-11-30 01:15:24,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a45aaa96-b7cd-419d-bd08-1ee6d6267b9c/bin/uautomizer/mathsat Starting monitored process 5 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with mathsat -unsat_core_generation=3 [2020-11-30 01:15:24,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:15:24,875 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 12 conjunts are in the unsatisfiable core [2020-11-30 01:15:24,877 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:15:24,929 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 01:15:24,994 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 01:15:25,037 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:15:25,037 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 01:15:25,153 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:15:25,153 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1905051512] [2020-11-30 01:15:25,154 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:15:25,154 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 10 [2020-11-30 01:15:25,154 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1567511398] [2020-11-30 01:15:25,155 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-11-30 01:15:25,155 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-30 01:15:25,156 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-11-30 01:15:25,156 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-11-30 01:15:25,157 INFO L87 Difference]: Start difference. First operand 47 states and 62 transitions. Second operand 10 states. [2020-11-30 01:15:25,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:15:25,927 INFO L93 Difference]: Finished difference Result 149 states and 197 transitions. [2020-11-30 01:15:25,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-11-30 01:15:25,927 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 21 [2020-11-30 01:15:25,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:15:25,930 INFO L225 Difference]: With dead ends: 149 [2020-11-30 01:15:25,930 INFO L226 Difference]: Without dead ends: 140 [2020-11-30 01:15:25,931 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=59, Invalid=151, Unknown=0, NotChecked=0, Total=210 [2020-11-30 01:15:25,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2020-11-30 01:15:25,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 75. [2020-11-30 01:15:25,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2020-11-30 01:15:25,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 102 transitions. [2020-11-30 01:15:25,957 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 102 transitions. Word has length 21 [2020-11-30 01:15:25,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:15:25,958 INFO L481 AbstractCegarLoop]: Abstraction has 75 states and 102 transitions. [2020-11-30 01:15:25,958 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-11-30 01:15:25,958 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 102 transitions. [2020-11-30 01:15:25,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-11-30 01:15:25,961 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:15:25,961 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:15:26,177 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2020-11-30 01:15:26,177 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 01:15:26,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:15:26,178 INFO L82 PathProgramCache]: Analyzing trace with hash 147544209, now seen corresponding path program 1 times [2020-11-30 01:15:26,178 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-30 01:15:26,178 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [758514171] [2020-11-30 01:15:26,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a45aaa96-b7cd-419d-bd08-1ee6d6267b9c/bin/uautomizer/mathsat Starting monitored process 6 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with mathsat -unsat_core_generation=3 [2020-11-30 01:15:26,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:15:26,309 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 12 conjunts are in the unsatisfiable core [2020-11-30 01:15:26,311 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:15:26,354 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 01:15:26,356 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 01:15:26,391 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 01:15:26,675 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:15:26,675 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 01:15:26,868 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:15:26,868 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [758514171] [2020-11-30 01:15:26,869 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:15:26,869 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [] total 15 [2020-11-30 01:15:26,869 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1319825856] [2020-11-30 01:15:26,870 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-11-30 01:15:26,870 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-30 01:15:26,871 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-11-30 01:15:26,871 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2020-11-30 01:15:26,871 INFO L87 Difference]: Start difference. First operand 75 states and 102 transitions. Second operand 15 states. [2020-11-30 01:15:28,250 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 14 DAG size of output: 8 [2020-11-30 01:15:28,819 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 18 DAG size of output: 12 [2020-11-30 01:15:29,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:15:29,067 INFO L93 Difference]: Finished difference Result 180 states and 237 transitions. [2020-11-30 01:15:29,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-11-30 01:15:29,068 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 22 [2020-11-30 01:15:29,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:15:29,071 INFO L225 Difference]: With dead ends: 180 [2020-11-30 01:15:29,071 INFO L226 Difference]: Without dead ends: 178 [2020-11-30 01:15:29,072 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 128 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=185, Invalid=465, Unknown=0, NotChecked=0, Total=650 [2020-11-30 01:15:29,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2020-11-30 01:15:29,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 89. [2020-11-30 01:15:29,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2020-11-30 01:15:29,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 121 transitions. [2020-11-30 01:15:29,107 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 121 transitions. Word has length 22 [2020-11-30 01:15:29,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:15:29,107 INFO L481 AbstractCegarLoop]: Abstraction has 89 states and 121 transitions. [2020-11-30 01:15:29,107 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-11-30 01:15:29,108 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 121 transitions. [2020-11-30 01:15:29,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-11-30 01:15:29,109 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:15:29,110 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] [2020-11-30 01:15:29,315 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 mathsat -unsat_core_generation=3 [2020-11-30 01:15:29,316 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 01:15:29,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:15:29,317 INFO L82 PathProgramCache]: Analyzing trace with hash -1845695531, now seen corresponding path program 1 times [2020-11-30 01:15:29,318 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-30 01:15:29,318 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [775812129] [2020-11-30 01:15:29,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a45aaa96-b7cd-419d-bd08-1ee6d6267b9c/bin/uautomizer/mathsat Starting monitored process 7 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with mathsat -unsat_core_generation=3 [2020-11-30 01:15:29,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:15:29,429 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 12 conjunts are in the unsatisfiable core [2020-11-30 01:15:29,431 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:15:29,478 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 01:15:29,528 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 01:15:29,584 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:15:29,585 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 01:15:29,595 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-11-30 01:15:29,595 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:15:29,649 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:15:29,650 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [775812129] [2020-11-30 01:15:29,650 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:15:29,650 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 9 [2020-11-30 01:15:29,650 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1333031052] [2020-11-30 01:15:29,651 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-11-30 01:15:29,651 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-30 01:15:29,652 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-11-30 01:15:29,652 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-11-30 01:15:29,652 INFO L87 Difference]: Start difference. First operand 89 states and 121 transitions. Second operand 9 states. [2020-11-30 01:15:30,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:15:30,533 INFO L93 Difference]: Finished difference Result 166 states and 219 transitions. [2020-11-30 01:15:30,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-11-30 01:15:30,534 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 23 [2020-11-30 01:15:30,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:15:30,536 INFO L225 Difference]: With dead ends: 166 [2020-11-30 01:15:30,536 INFO L226 Difference]: Without dead ends: 131 [2020-11-30 01:15:30,537 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=71, Invalid=139, Unknown=0, NotChecked=0, Total=210 [2020-11-30 01:15:30,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2020-11-30 01:15:30,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 89. [2020-11-30 01:15:30,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2020-11-30 01:15:30,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 120 transitions. [2020-11-30 01:15:30,554 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 120 transitions. Word has length 23 [2020-11-30 01:15:30,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:15:30,555 INFO L481 AbstractCegarLoop]: Abstraction has 89 states and 120 transitions. [2020-11-30 01:15:30,555 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-11-30 01:15:30,555 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 120 transitions. [2020-11-30 01:15:30,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-11-30 01:15:30,557 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:15:30,557 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] [2020-11-30 01:15:30,771 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 mathsat -unsat_core_generation=3 [2020-11-30 01:15:30,775 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 01:15:30,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:15:30,776 INFO L82 PathProgramCache]: Analyzing trace with hash 156888005, now seen corresponding path program 1 times [2020-11-30 01:15:30,776 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-30 01:15:30,776 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [521946192] [2020-11-30 01:15:30,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a45aaa96-b7cd-419d-bd08-1ee6d6267b9c/bin/uautomizer/mathsat Starting monitored process 8 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with mathsat -unsat_core_generation=3 [2020-11-30 01:15:30,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:15:30,889 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 3 conjunts are in the unsatisfiable core [2020-11-30 01:15:30,890 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:15:30,906 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:15:30,907 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 01:15:30,922 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:15:30,922 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [521946192] [2020-11-30 01:15:30,923 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:15:30,923 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2020-11-30 01:15:30,923 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1209421032] [2020-11-30 01:15:30,923 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-30 01:15:30,924 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-30 01:15:30,924 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-30 01:15:30,925 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-30 01:15:30,925 INFO L87 Difference]: Start difference. First operand 89 states and 120 transitions. Second operand 6 states. [2020-11-30 01:15:31,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:15:31,040 INFO L93 Difference]: Finished difference Result 157 states and 199 transitions. [2020-11-30 01:15:31,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-30 01:15:31,041 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 24 [2020-11-30 01:15:31,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:15:31,043 INFO L225 Difference]: With dead ends: 157 [2020-11-30 01:15:31,043 INFO L226 Difference]: Without dead ends: 141 [2020-11-30 01:15:31,046 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 [2020-11-30 01:15:31,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2020-11-30 01:15:31,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 93. [2020-11-30 01:15:31,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2020-11-30 01:15:31,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 124 transitions. [2020-11-30 01:15:31,068 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 124 transitions. Word has length 24 [2020-11-30 01:15:31,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:15:31,068 INFO L481 AbstractCegarLoop]: Abstraction has 93 states and 124 transitions. [2020-11-30 01:15:31,069 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-30 01:15:31,069 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 124 transitions. [2020-11-30 01:15:31,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-11-30 01:15:31,070 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:15:31,071 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] [2020-11-30 01:15:31,279 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 mathsat -unsat_core_generation=3 [2020-11-30 01:15:31,280 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 01:15:31,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:15:31,280 INFO L82 PathProgramCache]: Analyzing trace with hash -1621213116, now seen corresponding path program 1 times [2020-11-30 01:15:31,281 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-30 01:15:31,281 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [677902568] [2020-11-30 01:15:31,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a45aaa96-b7cd-419d-bd08-1ee6d6267b9c/bin/uautomizer/mathsat Starting monitored process 9 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with mathsat -unsat_core_generation=3 [2020-11-30 01:15:31,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:15:31,387 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-30 01:15:31,388 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:15:31,405 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:15:31,405 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 01:15:31,408 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:15:31,408 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [677902568] [2020-11-30 01:15:31,408 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:15:31,408 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2020-11-30 01:15:31,409 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1796286060] [2020-11-30 01:15:31,409 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-30 01:15:31,409 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-30 01:15:31,410 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 01:15:31,410 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 01:15:31,410 INFO L87 Difference]: Start difference. First operand 93 states and 124 transitions. Second operand 3 states. [2020-11-30 01:15:33,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:15:33,528 INFO L93 Difference]: Finished difference Result 96 states and 127 transitions. [2020-11-30 01:15:33,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 01:15:33,529 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 24 [2020-11-30 01:15:33,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:15:33,531 INFO L225 Difference]: With dead ends: 96 [2020-11-30 01:15:33,531 INFO L226 Difference]: Without dead ends: 94 [2020-11-30 01:15:33,531 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 [2020-11-30 01:15:33,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2020-11-30 01:15:33,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 93. [2020-11-30 01:15:33,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2020-11-30 01:15:33,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 124 transitions. [2020-11-30 01:15:33,545 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 124 transitions. Word has length 24 [2020-11-30 01:15:33,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:15:33,546 INFO L481 AbstractCegarLoop]: Abstraction has 93 states and 124 transitions. [2020-11-30 01:15:33,546 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-30 01:15:33,546 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 124 transitions. [2020-11-30 01:15:33,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-11-30 01:15:33,548 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:15:33,548 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] [2020-11-30 01:15:33,761 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 mathsat -unsat_core_generation=3 [2020-11-30 01:15:33,762 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 01:15:33,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:15:33,762 INFO L82 PathProgramCache]: Analyzing trace with hash 1743883267, now seen corresponding path program 1 times [2020-11-30 01:15:33,763 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-30 01:15:33,763 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1876160770] [2020-11-30 01:15:33,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a45aaa96-b7cd-419d-bd08-1ee6d6267b9c/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 [2020-11-30 01:15:33,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:15:33,872 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 12 conjunts are in the unsatisfiable core [2020-11-30 01:15:33,874 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:15:33,903 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 01:15:33,941 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 01:15:33,976 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:15:33,977 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 01:15:34,075 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:15:34,076 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1876160770] [2020-11-30 01:15:34,076 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:15:34,076 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 10 [2020-11-30 01:15:34,076 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [997873100] [2020-11-30 01:15:34,077 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-11-30 01:15:34,077 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-30 01:15:34,078 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-11-30 01:15:34,078 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-11-30 01:15:34,078 INFO L87 Difference]: Start difference. First operand 93 states and 124 transitions. Second operand 10 states. [2020-11-30 01:15:34,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:15:34,593 INFO L93 Difference]: Finished difference Result 131 states and 173 transitions. [2020-11-30 01:15:34,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-11-30 01:15:34,594 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 25 [2020-11-30 01:15:34,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:15:34,595 INFO L225 Difference]: With dead ends: 131 [2020-11-30 01:15:34,596 INFO L226 Difference]: Without dead ends: 118 [2020-11-30 01:15:34,597 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210 [2020-11-30 01:15:34,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2020-11-30 01:15:34,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 89. [2020-11-30 01:15:34,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2020-11-30 01:15:34,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 118 transitions. [2020-11-30 01:15:34,609 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 118 transitions. Word has length 25 [2020-11-30 01:15:34,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:15:34,610 INFO L481 AbstractCegarLoop]: Abstraction has 89 states and 118 transitions. [2020-11-30 01:15:34,610 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-11-30 01:15:34,610 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 118 transitions. [2020-11-30 01:15:34,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-11-30 01:15:34,612 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:15:34,612 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] [2020-11-30 01:15:34,823 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 mathsat -unsat_core_generation=3 [2020-11-30 01:15:34,824 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 01:15:34,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:15:34,824 INFO L82 PathProgramCache]: Analyzing trace with hash 839729769, now seen corresponding path program 1 times [2020-11-30 01:15:34,825 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-30 01:15:34,825 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [496120291] [2020-11-30 01:15:34,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a45aaa96-b7cd-419d-bd08-1ee6d6267b9c/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 [2020-11-30 01:15:34,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:15:34,932 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 13 conjunts are in the unsatisfiable core [2020-11-30 01:15:34,934 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:15:34,968 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 01:15:35,010 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 01:15:35,069 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:15:35,069 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 01:15:35,172 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:15:35,173 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [496120291] [2020-11-30 01:15:35,173 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:15:35,173 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [] total 11 [2020-11-30 01:15:35,173 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1925593461] [2020-11-30 01:15:35,174 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-11-30 01:15:35,174 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-30 01:15:35,174 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-11-30 01:15:35,175 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2020-11-30 01:15:35,175 INFO L87 Difference]: Start difference. First operand 89 states and 118 transitions. Second operand 11 states. [2020-11-30 01:15:35,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:15:35,765 INFO L93 Difference]: Finished difference Result 114 states and 147 transitions. [2020-11-30 01:15:35,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-11-30 01:15:35,765 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 25 [2020-11-30 01:15:35,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:15:35,766 INFO L225 Difference]: With dead ends: 114 [2020-11-30 01:15:35,767 INFO L226 Difference]: Without dead ends: 78 [2020-11-30 01:15:35,767 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=80, Invalid=226, Unknown=0, NotChecked=0, Total=306 [2020-11-30 01:15:35,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2020-11-30 01:15:35,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 76. [2020-11-30 01:15:35,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-11-30 01:15:35,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 98 transitions. [2020-11-30 01:15:35,778 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 98 transitions. Word has length 25 [2020-11-30 01:15:35,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:15:35,778 INFO L481 AbstractCegarLoop]: Abstraction has 76 states and 98 transitions. [2020-11-30 01:15:35,778 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-11-30 01:15:35,778 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 98 transitions. [2020-11-30 01:15:35,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-11-30 01:15:35,780 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:15:35,780 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] [2020-11-30 01:15:35,993 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 mathsat -unsat_core_generation=3 [2020-11-30 01:15:35,997 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 01:15:35,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:15:35,998 INFO L82 PathProgramCache]: Analyzing trace with hash 1281876129, now seen corresponding path program 1 times [2020-11-30 01:15:35,998 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-30 01:15:35,998 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [609967816] [2020-11-30 01:15:35,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a45aaa96-b7cd-419d-bd08-1ee6d6267b9c/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 [2020-11-30 01:15:36,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:15:36,125 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 12 conjunts are in the unsatisfiable core [2020-11-30 01:15:36,127 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:15:36,160 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 01:15:36,205 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 01:15:36,238 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:15:36,238 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 01:15:36,244 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-11-30 01:15:36,244 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:15:36,302 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:15:36,302 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [609967816] [2020-11-30 01:15:36,302 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:15:36,302 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 9 [2020-11-30 01:15:36,303 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1504523850] [2020-11-30 01:15:36,303 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-11-30 01:15:36,303 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-30 01:15:36,304 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-11-30 01:15:36,304 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-11-30 01:15:36,304 INFO L87 Difference]: Start difference. First operand 76 states and 98 transitions. Second operand 9 states. [2020-11-30 01:15:36,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:15:36,707 INFO L93 Difference]: Finished difference Result 84 states and 104 transitions. [2020-11-30 01:15:36,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-11-30 01:15:36,709 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-11-30 01:15:36,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:15:36,710 INFO L225 Difference]: With dead ends: 84 [2020-11-30 01:15:36,710 INFO L226 Difference]: Without dead ends: 74 [2020-11-30 01:15:36,711 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 [2020-11-30 01:15:36,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-11-30 01:15:36,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2020-11-30 01:15:36,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2020-11-30 01:15:36,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 94 transitions. [2020-11-30 01:15:36,720 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 94 transitions. Word has length 25 [2020-11-30 01:15:36,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:15:36,721 INFO L481 AbstractCegarLoop]: Abstraction has 74 states and 94 transitions. [2020-11-30 01:15:36,721 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-11-30 01:15:36,721 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 94 transitions. [2020-11-30 01:15:36,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-11-30 01:15:36,722 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:15:36,723 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] [2020-11-30 01:15:36,935 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 mathsat -unsat_core_generation=3 [2020-11-30 01:15:36,936 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 01:15:36,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:15:36,936 INFO L82 PathProgramCache]: Analyzing trace with hash -144403189, now seen corresponding path program 1 times [2020-11-30 01:15:36,936 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-30 01:15:36,937 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1933498260] [2020-11-30 01:15:36,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a45aaa96-b7cd-419d-bd08-1ee6d6267b9c/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 [2020-11-30 01:15:37,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:15:37,069 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 9 conjunts are in the unsatisfiable core [2020-11-30 01:15:37,071 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:15:37,104 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 01:15:37,156 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:15:37,156 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 01:15:37,617 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:15:37,618 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1933498260] [2020-11-30 01:15:37,618 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:15:37,618 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 10 [2020-11-30 01:15:37,618 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [554421478] [2020-11-30 01:15:37,619 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-11-30 01:15:37,619 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-30 01:15:37,620 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-11-30 01:15:37,620 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2020-11-30 01:15:37,621 INFO L87 Difference]: Start difference. First operand 74 states and 94 transitions. Second operand 10 states. [2020-11-30 01:15:38,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:15:38,087 INFO L93 Difference]: Finished difference Result 82 states and 101 transitions. [2020-11-30 01:15:38,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-30 01:15:38,088 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 26 [2020-11-30 01:15:38,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:15:38,089 INFO L225 Difference]: With dead ends: 82 [2020-11-30 01:15:38,089 INFO L226 Difference]: Without dead ends: 74 [2020-11-30 01:15:38,089 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2020-11-30 01:15:38,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-11-30 01:15:38,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2020-11-30 01:15:38,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2020-11-30 01:15:38,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 93 transitions. [2020-11-30 01:15:38,106 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 93 transitions. Word has length 26 [2020-11-30 01:15:38,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:15:38,106 INFO L481 AbstractCegarLoop]: Abstraction has 74 states and 93 transitions. [2020-11-30 01:15:38,106 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-11-30 01:15:38,106 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 93 transitions. [2020-11-30 01:15:38,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-11-30 01:15:38,108 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:15:38,108 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] [2020-11-30 01:15:38,321 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 mathsat -unsat_core_generation=3 [2020-11-30 01:15:38,321 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 01:15:38,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:15:38,322 INFO L82 PathProgramCache]: Analyzing trace with hash -953749815, now seen corresponding path program 1 times [2020-11-30 01:15:38,322 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-30 01:15:38,322 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1229223681] [2020-11-30 01:15:38,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a45aaa96-b7cd-419d-bd08-1ee6d6267b9c/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 [2020-11-30 01:15:38,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:15:38,440 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 12 conjunts are in the unsatisfiable core [2020-11-30 01:15:38,442 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:15:38,546 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 01:15:38,722 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:15:38,723 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 01:15:38,920 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:15:39,112 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:15:39,113 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1229223681] [2020-11-30 01:15:39,113 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:15:39,113 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [] total 16 [2020-11-30 01:15:39,113 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1712563470] [2020-11-30 01:15:39,113 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-11-30 01:15:39,114 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-30 01:15:39,114 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-11-30 01:15:39,114 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=190, Unknown=0, NotChecked=0, Total=240 [2020-11-30 01:15:39,114 INFO L87 Difference]: Start difference. First operand 74 states and 93 transitions. Second operand 16 states. [2020-11-30 01:15:41,426 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 26 DAG size of output: 23 [2020-11-30 01:15:42,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:15:42,206 INFO L93 Difference]: Finished difference Result 154 states and 169 transitions. [2020-11-30 01:15:42,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-11-30 01:15:42,207 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 26 [2020-11-30 01:15:42,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:15:42,209 INFO L225 Difference]: With dead ends: 154 [2020-11-30 01:15:42,209 INFO L226 Difference]: Without dead ends: 134 [2020-11-30 01:15:42,210 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 35 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=186, Invalid=464, Unknown=0, NotChecked=0, Total=650 [2020-11-30 01:15:42,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2020-11-30 01:15:42,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 72. [2020-11-30 01:15:42,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2020-11-30 01:15:42,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 87 transitions. [2020-11-30 01:15:42,219 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 87 transitions. Word has length 26 [2020-11-30 01:15:42,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:15:42,219 INFO L481 AbstractCegarLoop]: Abstraction has 72 states and 87 transitions. [2020-11-30 01:15:42,219 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-11-30 01:15:42,219 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 87 transitions. [2020-11-30 01:15:42,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-11-30 01:15:42,220 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:15:42,220 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] [2020-11-30 01:15:42,434 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 mathsat -unsat_core_generation=3 [2020-11-30 01:15:42,438 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 01:15:42,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:15:42,438 INFO L82 PathProgramCache]: Analyzing trace with hash -1548503636, now seen corresponding path program 1 times [2020-11-30 01:15:42,439 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-30 01:15:42,439 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [456983080] [2020-11-30 01:15:42,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a45aaa96-b7cd-419d-bd08-1ee6d6267b9c/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 [2020-11-30 01:15:42,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:15:42,575 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 22 conjunts are in the unsatisfiable core [2020-11-30 01:15:42,578 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:15:42,612 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 01:15:42,613 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 01:15:42,645 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 01:15:43,099 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 29 [2020-11-30 01:15:43,111 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:15:43,111 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 01:15:43,432 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:15:43,432 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [456983080] [2020-11-30 01:15:43,432 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:15:43,432 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12, 12] imperfect sequences [] total 15 [2020-11-30 01:15:43,432 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [102842936] [2020-11-30 01:15:43,433 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-11-30 01:15:43,433 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-30 01:15:43,433 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-11-30 01:15:43,434 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2020-11-30 01:15:43,434 INFO L87 Difference]: Start difference. First operand 72 states and 87 transitions. Second operand 15 states. [2020-11-30 01:15:44,278 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 34 [2020-11-30 01:15:45,194 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 37 [2020-11-30 01:15:46,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:15:46,153 INFO L93 Difference]: Finished difference Result 195 states and 205 transitions. [2020-11-30 01:15:46,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2020-11-30 01:15:46,156 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 27 [2020-11-30 01:15:46,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:15:46,157 INFO L225 Difference]: With dead ends: 195 [2020-11-30 01:15:46,157 INFO L226 Difference]: Without dead ends: 158 [2020-11-30 01:15:46,159 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 34 SyntacticMatches, 5 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 444 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=455, Invalid=1437, Unknown=0, NotChecked=0, Total=1892 [2020-11-30 01:15:46,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2020-11-30 01:15:46,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 43. [2020-11-30 01:15:46,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-11-30 01:15:46,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 53 transitions. [2020-11-30 01:15:46,168 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 53 transitions. Word has length 27 [2020-11-30 01:15:46,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:15:46,168 INFO L481 AbstractCegarLoop]: Abstraction has 43 states and 53 transitions. [2020-11-30 01:15:46,168 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-11-30 01:15:46,168 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 53 transitions. [2020-11-30 01:15:46,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-11-30 01:15:46,169 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:15:46,169 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] [2020-11-30 01:15:46,383 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 mathsat -unsat_core_generation=3 [2020-11-30 01:15:46,384 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 01:15:46,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:15:46,384 INFO L82 PathProgramCache]: Analyzing trace with hash 1423958792, now seen corresponding path program 1 times [2020-11-30 01:15:46,384 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-30 01:15:46,385 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1714450091] [2020-11-30 01:15:46,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a45aaa96-b7cd-419d-bd08-1ee6d6267b9c/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 [2020-11-30 01:15:46,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:15:46,498 INFO L263 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 21 conjunts are in the unsatisfiable core [2020-11-30 01:15:46,500 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:15:46,528 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 01:15:46,837 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:15:46,837 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 01:15:47,061 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:15:47,061 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1714450091] [2020-11-30 01:15:47,061 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:15:47,061 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10, 10] imperfect sequences [] total 12 [2020-11-30 01:15:47,062 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [48042257] [2020-11-30 01:15:47,062 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-11-30 01:15:47,062 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-30 01:15:47,062 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-11-30 01:15:47,063 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2020-11-30 01:15:47,063 INFO L87 Difference]: Start difference. First operand 43 states and 53 transitions. Second operand 12 states. [2020-11-30 01:15:48,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:15:48,336 INFO L93 Difference]: Finished difference Result 125 states and 140 transitions. [2020-11-30 01:15:48,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-11-30 01:15:48,338 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 28 [2020-11-30 01:15:48,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:15:48,339 INFO L225 Difference]: With dead ends: 125 [2020-11-30 01:15:48,339 INFO L226 Difference]: Without dead ends: 101 [2020-11-30 01:15:48,340 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 39 SyntacticMatches, 5 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 147 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=209, Invalid=603, Unknown=0, NotChecked=0, Total=812 [2020-11-30 01:15:48,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2020-11-30 01:15:48,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 41. [2020-11-30 01:15:48,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-11-30 01:15:48,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 49 transitions. [2020-11-30 01:15:48,347 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 49 transitions. Word has length 28 [2020-11-30 01:15:48,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:15:48,347 INFO L481 AbstractCegarLoop]: Abstraction has 41 states and 49 transitions. [2020-11-30 01:15:48,347 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-11-30 01:15:48,347 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 49 transitions. [2020-11-30 01:15:48,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-11-30 01:15:48,348 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:15:48,348 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] [2020-11-30 01:15:48,561 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 mathsat -unsat_core_generation=3 [2020-11-30 01:15:48,561 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 01:15:48,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:15:48,562 INFO L82 PathProgramCache]: Analyzing trace with hash 489956430, now seen corresponding path program 1 times [2020-11-30 01:15:48,562 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-30 01:15:48,562 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [937938622] [2020-11-30 01:15:48,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a45aaa96-b7cd-419d-bd08-1ee6d6267b9c/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 [2020-11-30 01:15:48,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:15:48,689 INFO L263 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 10 conjunts are in the unsatisfiable core [2020-11-30 01:15:48,690 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:15:48,709 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 01:15:48,729 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 01:15:48,771 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:15:48,771 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 01:15:49,064 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:15:49,064 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [937938622] [2020-11-30 01:15:49,065 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:15:49,065 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 10 [2020-11-30 01:15:49,065 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [142896959] [2020-11-30 01:15:49,065 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-11-30 01:15:49,065 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-30 01:15:49,066 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-11-30 01:15:49,066 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-11-30 01:15:49,066 INFO L87 Difference]: Start difference. First operand 41 states and 49 transitions. Second operand 10 states. [2020-11-30 01:15:49,618 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification that was a NOOP. DAG size: 25 [2020-11-30 01:15:49,834 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2020-11-30 01:15:49,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:15:49,957 INFO L93 Difference]: Finished difference Result 52 states and 59 transitions. [2020-11-30 01:15:49,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-30 01:15:49,958 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 32 [2020-11-30 01:15:49,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:15:49,959 INFO L225 Difference]: With dead ends: 52 [2020-11-30 01:15:49,959 INFO L226 Difference]: Without dead ends: 41 [2020-11-30 01:15:49,959 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 [2020-11-30 01:15:49,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2020-11-30 01:15:49,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2020-11-30 01:15:49,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-11-30 01:15:49,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 48 transitions. [2020-11-30 01:15:49,969 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 48 transitions. Word has length 32 [2020-11-30 01:15:49,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:15:49,969 INFO L481 AbstractCegarLoop]: Abstraction has 41 states and 48 transitions. [2020-11-30 01:15:49,969 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-11-30 01:15:49,970 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 48 transitions. [2020-11-30 01:15:49,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-11-30 01:15:49,971 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:15:49,972 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] [2020-11-30 01:15:50,172 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 mathsat -unsat_core_generation=3 [2020-11-30 01:15:50,172 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 01:15:50,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:15:50,173 INFO L82 PathProgramCache]: Analyzing trace with hash 1191021008, now seen corresponding path program 1 times [2020-11-30 01:15:50,173 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-30 01:15:50,174 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2012947400] [2020-11-30 01:15:50,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a45aaa96-b7cd-419d-bd08-1ee6d6267b9c/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 [2020-11-30 01:15:50,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:15:50,287 INFO L263 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 15 conjunts are in the unsatisfiable core [2020-11-30 01:15:50,290 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:15:50,315 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 01:15:50,337 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 01:15:50,398 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:15:50,398 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 01:15:50,421 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 1] term [2020-11-30 01:15:50,421 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:15:50,590 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:15:50,590 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2012947400] [2020-11-30 01:15:50,590 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:15:50,591 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [] total 14 [2020-11-30 01:15:50,591 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1317302356] [2020-11-30 01:15:50,591 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-11-30 01:15:50,591 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-30 01:15:50,592 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-11-30 01:15:50,592 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2020-11-30 01:15:50,592 INFO L87 Difference]: Start difference. First operand 41 states and 48 transitions. Second operand 14 states. [2020-11-30 01:15:51,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:15:51,386 INFO L93 Difference]: Finished difference Result 55 states and 61 transitions. [2020-11-30 01:15:51,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-11-30 01:15:51,387 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 32 [2020-11-30 01:15:51,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:15:51,388 INFO L225 Difference]: With dead ends: 55 [2020-11-30 01:15:51,388 INFO L226 Difference]: Without dead ends: 41 [2020-11-30 01:15:51,389 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 [2020-11-30 01:15:51,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2020-11-30 01:15:51,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 39. [2020-11-30 01:15:51,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-11-30 01:15:51,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 42 transitions. [2020-11-30 01:15:51,395 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 42 transitions. Word has length 32 [2020-11-30 01:15:51,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:15:51,396 INFO L481 AbstractCegarLoop]: Abstraction has 39 states and 42 transitions. [2020-11-30 01:15:51,396 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-11-30 01:15:51,396 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 42 transitions. [2020-11-30 01:15:51,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-11-30 01:15:51,396 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:15:51,396 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] [2020-11-30 01:15:51,597 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 mathsat -unsat_core_generation=3 [2020-11-30 01:15:51,597 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 01:15:51,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:15:51,598 INFO L82 PathProgramCache]: Analyzing trace with hash -1654102483, now seen corresponding path program 1 times [2020-11-30 01:15:51,598 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-30 01:15:51,598 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1729335607] [2020-11-30 01:15:51,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a45aaa96-b7cd-419d-bd08-1ee6d6267b9c/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 [2020-11-30 01:15:51,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:15:51,733 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 11 conjunts are in the unsatisfiable core [2020-11-30 01:15:51,735 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:15:51,791 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 01:15:51,895 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:15:51,896 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 01:15:51,997 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:15:52,070 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:15:52,071 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1729335607] [2020-11-30 01:15:52,071 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:15:52,071 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 12 [2020-11-30 01:15:52,071 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1481159408] [2020-11-30 01:15:52,072 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-11-30 01:15:52,072 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-30 01:15:52,072 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-11-30 01:15:52,072 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2020-11-30 01:15:52,073 INFO L87 Difference]: Start difference. First operand 39 states and 42 transitions. Second operand 12 states. [2020-11-30 01:15:52,694 WARN L193 SmtUtils]: Spent 500.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2020-11-30 01:15:53,623 WARN L193 SmtUtils]: Spent 684.00 ms on a formula simplification. DAG size of input: 20 DAG size of output: 17 [2020-11-30 01:15:53,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:15:53,744 INFO L93 Difference]: Finished difference Result 79 states and 81 transitions. [2020-11-30 01:15:53,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-11-30 01:15:53,744 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 33 [2020-11-30 01:15:53,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:15:53,745 INFO L225 Difference]: With dead ends: 79 [2020-11-30 01:15:53,745 INFO L226 Difference]: Without dead ends: 61 [2020-11-30 01:15:53,746 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 53 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=90, Invalid=252, Unknown=0, NotChecked=0, Total=342 [2020-11-30 01:15:53,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2020-11-30 01:15:53,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 39. [2020-11-30 01:15:53,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-11-30 01:15:53,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 41 transitions. [2020-11-30 01:15:53,753 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 41 transitions. Word has length 33 [2020-11-30 01:15:53,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:15:53,753 INFO L481 AbstractCegarLoop]: Abstraction has 39 states and 41 transitions. [2020-11-30 01:15:53,753 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-11-30 01:15:53,753 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 41 transitions. [2020-11-30 01:15:53,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-11-30 01:15:53,754 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:15:53,754 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] [2020-11-30 01:15:53,954 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 mathsat -unsat_core_generation=3 [2020-11-30 01:15:53,955 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 01:15:53,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:15:53,955 INFO L82 PathProgramCache]: Analyzing trace with hash 798574185, now seen corresponding path program 1 times [2020-11-30 01:15:53,955 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-30 01:15:53,956 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1356216235] [2020-11-30 01:15:53,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a45aaa96-b7cd-419d-bd08-1ee6d6267b9c/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 [2020-11-30 01:15:54,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:15:54,062 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 3 conjunts are in the unsatisfiable core [2020-11-30 01:15:54,063 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:15:54,074 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:15:54,074 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 01:15:54,076 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:15:54,076 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1356216235] [2020-11-30 01:15:54,076 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:15:54,077 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2020-11-30 01:15:54,077 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1370289214] [2020-11-30 01:15:54,077 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-30 01:15:54,078 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-30 01:15:54,078 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-30 01:15:54,078 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-30 01:15:54,079 INFO L87 Difference]: Start difference. First operand 39 states and 41 transitions. Second operand 4 states. [2020-11-30 01:15:54,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:15:54,108 INFO L93 Difference]: Finished difference Result 39 states and 41 transitions. [2020-11-30 01:15:54,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-30 01:15:54,109 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 35 [2020-11-30 01:15:54,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:15:54,109 INFO L225 Difference]: With dead ends: 39 [2020-11-30 01:15:54,109 INFO L226 Difference]: Without dead ends: 0 [2020-11-30 01:15:54,109 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 [2020-11-30 01:15:54,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-30 01:15:54,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-30 01:15:54,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-30 01:15:54,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-30 01:15:54,110 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 35 [2020-11-30 01:15:54,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:15:54,110 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-30 01:15:54,110 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-30 01:15:54,111 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-30 01:15:54,111 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-30 01:15:54,311 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 mathsat -unsat_core_generation=3 [2020-11-30 01:15:54,313 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-30 01:15:54,776 WARN L193 SmtUtils]: Spent 356.00 ms on a formula simplification. DAG size of input: 152 DAG size of output: 122 [2020-11-30 01:15:54,950 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 141 DAG size of output: 136 [2020-11-30 01:15:55,083 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 142 DAG size of output: 121 [2020-11-30 01:15:55,268 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 147 DAG size of output: 112 [2020-11-30 01:15:55,401 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 147 DAG size of output: 120 [2020-11-30 01:15:55,748 WARN L193 SmtUtils]: Spent 328.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 23 [2020-11-30 01:15:56,957 WARN L193 SmtUtils]: Spent 1.14 s on a formula simplification. DAG size of input: 122 DAG size of output: 39 [2020-11-30 01:15:58,085 WARN L193 SmtUtils]: Spent 1.13 s on a formula simplification. DAG size of input: 136 DAG size of output: 27 [2020-11-30 01:15:58,736 WARN L193 SmtUtils]: Spent 649.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 33 [2020-11-30 01:15:59,222 WARN L193 SmtUtils]: Spent 485.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 25 [2020-11-30 01:15:59,609 WARN L193 SmtUtils]: Spent 386.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 32 [2020-11-30 01:16:00,129 WARN L193 SmtUtils]: Spent 519.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 34 [2020-11-30 01:16:00,830 WARN L193 SmtUtils]: Spent 699.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 43 [2020-11-30 01:16:02,355 WARN L193 SmtUtils]: Spent 1.52 s on a formula simplification. DAG size of input: 118 DAG size of output: 37 [2020-11-30 01:16:02,416 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 3) no Hoare annotation was computed. [2020-11-30 01:16:02,416 INFO L274 CegarLoopResult]: For program point L3(line 3) no Hoare annotation was computed. [2020-11-30 01:16:02,416 INFO L274 CegarLoopResult]: For program point L3-1(line 3) no Hoare annotation was computed. [2020-11-30 01:16:02,416 INFO L274 CegarLoopResult]: For program point L3-2(line 3) no Hoare annotation was computed. [2020-11-30 01:16:02,416 INFO L274 CegarLoopResult]: For program point L3-3(line 3) no Hoare annotation was computed. [2020-11-30 01:16:02,416 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-11-30 01:16:02,416 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-11-30 01:16:02,417 INFO L274 CegarLoopResult]: For program point L28(lines 28 34) no Hoare annotation was computed. [2020-11-30 01:16:02,417 INFO L274 CegarLoopResult]: For program point L28-1(lines 28 34) no Hoare annotation was computed. [2020-11-30 01:16:02,417 INFO L274 CegarLoopResult]: For program point L70(line 70) no Hoare annotation was computed. [2020-11-30 01:16:02,417 INFO L274 CegarLoopResult]: For program point L70-2(line 70) no Hoare annotation was computed. [2020-11-30 01:16:02,417 INFO L274 CegarLoopResult]: For program point L70-3(lines 70 71) no Hoare annotation was computed. [2020-11-30 01:16:02,417 INFO L274 CegarLoopResult]: For program point L70-5(lines 70 86) no Hoare annotation was computed. [2020-11-30 01:16:02,417 INFO L274 CegarLoopResult]: For program point L70-7(lines 70 86) no Hoare annotation was computed. [2020-11-30 01:16:02,417 INFO L274 CegarLoopResult]: For program point L71(line 71) no Hoare annotation was computed. [2020-11-30 01:16:02,417 INFO L274 CegarLoopResult]: For program point L38(lines 38 39) no Hoare annotation was computed. [2020-11-30 01:16:02,417 INFO L274 CegarLoopResult]: For program point L71-2(line 71) no Hoare annotation was computed. [2020-11-30 01:16:02,417 INFO L277 CegarLoopResult]: At program point L88(lines 61 89) the Hoare annotation is: true [2020-11-30 01:16:02,417 INFO L274 CegarLoopResult]: For program point L31(lines 31 34) no Hoare annotation was computed. [2020-11-30 01:16:02,417 INFO L274 CegarLoopResult]: For program point L31-1(lines 31 34) no Hoare annotation was computed. [2020-11-30 01:16:02,418 INFO L274 CegarLoopResult]: For program point L40(lines 40 41) no Hoare annotation was computed. [2020-11-30 01:16:02,418 INFO L274 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-11-30 01:16:02,418 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 3) no Hoare annotation was computed. [2020-11-30 01:16:02,418 INFO L274 CegarLoopResult]: For program point L82(line 82) no Hoare annotation was computed. [2020-11-30 01:16:02,418 INFO L274 CegarLoopResult]: For program point L82-2(lines 82 85) no Hoare annotation was computed. [2020-11-30 01:16:02,418 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-30 01:16:02,418 INFO L274 CegarLoopResult]: For program point L25(lines 25 34) no Hoare annotation was computed. [2020-11-30 01:16:02,418 INFO L274 CegarLoopResult]: For program point L25-1(lines 25 34) no Hoare annotation was computed. [2020-11-30 01:16:02,418 INFO L274 CegarLoopResult]: For program point L17-1(lines 17 21) no Hoare annotation was computed. [2020-11-30 01:16:02,418 INFO L270 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)))) [2020-11-30 01:16:02,419 INFO L274 CegarLoopResult]: For program point L17-3(lines 14 35) no Hoare annotation was computed. [2020-11-30 01:16:02,419 INFO L274 CegarLoopResult]: For program point L17-5(lines 17 21) no Hoare annotation was computed. [2020-11-30 01:16:02,419 INFO L270 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))))) [2020-11-30 01:16:02,419 INFO L274 CegarLoopResult]: For program point L17-7(lines 14 35) no Hoare annotation was computed. [2020-11-30 01:16:02,419 INFO L270 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))))) [2020-11-30 01:16:02,419 INFO L270 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))) [2020-11-30 01:16:02,419 INFO L270 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)))) [2020-11-30 01:16:02,419 INFO L270 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))) [2020-11-30 01:16:02,420 INFO L270 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))) [2020-11-30 01:16:02,420 INFO L270 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|) [2020-11-30 01:16:02,420 INFO L270 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))))) [2020-11-30 01:16:02,420 INFO L270 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)))))) [2020-11-30 01:16:02,420 INFO L270 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)))) [2020-11-30 01:16:02,421 INFO L270 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))) [2020-11-30 01:16:02,421 INFO L274 CegarLoopResult]: For program point L76(line 76) no Hoare annotation was computed. [2020-11-30 01:16:02,421 INFO L274 CegarLoopResult]: For program point L43(line 43) no Hoare annotation was computed. [2020-11-30 01:16:02,421 INFO L274 CegarLoopResult]: For program point L76-2(lines 76 79) no Hoare annotation was computed. [2020-11-30 01:16:02,421 INFO L274 CegarLoopResult]: For program point L43-2(line 43) no Hoare annotation was computed. [2020-11-30 01:16:02,421 INFO L270 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)))) [2020-11-30 01:16:02,472 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.11 01:16:02 BoogieIcfgContainer [2020-11-30 01:16:02,472 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-30 01:16:02,473 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-30 01:16:02,473 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-30 01:16:02,483 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-30 01:16:02,484 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 01:15:22" (3/4) ... [2020-11-30 01:16:02,488 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-30 01:16:02,516 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 22 nodes and edges [2020-11-30 01:16:02,516 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2020-11-30 01:16:02,517 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2020-11-30 01:16:02,518 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-30 01:16:02,550 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (0bv32 == \result && ~fp.eq~FLOAT(x, x)) || (1bv32 == \result && !~fp.eq~FLOAT(x, x)) [2020-11-30 01:16:02,550 WARN L221 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) [2020-11-30 01:16:02,551 WARN L221 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) [2020-11-30 01:16:02,552 WARN L221 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 [2020-11-30 01:16:02,552 WARN L221 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) [2020-11-30 01:16:02,553 WARN L221 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]))) [2020-11-30 01:16:02,553 WARN L221 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])) [2020-11-30 01:16:02,553 WARN L221 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)) [2020-11-30 01:16:02,554 WARN L221 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)) [2020-11-30 01:16:02,554 WARN L221 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])) [2020-11-30 01:16:02,555 WARN L221 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])) [2020-11-30 01:16:02,555 WARN L221 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)) [2020-11-30 01:16:02,556 WARN L221 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) [2020-11-30 01:16:02,603 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_a45aaa96-b7cd-419d-bd08-1ee6d6267b9c/bin/uautomizer/witness.graphml [2020-11-30 01:16:02,604 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-30 01:16:02,605 INFO L168 Benchmark]: Toolchain (without parser) took 41565.27 ms. Allocated memory was 69.2 MB in the beginning and 102.8 MB in the end (delta: 33.6 MB). Free memory was 50.9 MB in the beginning and 48.0 MB in the end (delta: 2.9 MB). Peak memory consumption was 35.8 MB. Max. memory is 16.1 GB. [2020-11-30 01:16:02,606 INFO L168 Benchmark]: CDTParser took 0.38 ms. Allocated memory is still 69.2 MB. Free memory is still 52.1 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 01:16:02,606 INFO L168 Benchmark]: CACSL2BoogieTranslator took 477.10 ms. Allocated memory is still 69.2 MB. Free memory was 50.6 MB in the beginning and 52.2 MB in the end (delta: -1.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-30 01:16:02,607 INFO L168 Benchmark]: Boogie Procedure Inliner took 104.79 ms. Allocated memory is still 69.2 MB. Free memory was 52.2 MB in the beginning and 50.3 MB in the end (delta: 1.9 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 01:16:02,607 INFO L168 Benchmark]: Boogie Preprocessor took 94.70 ms. Allocated memory is still 69.2 MB. Free memory was 50.1 MB in the beginning and 48.5 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 01:16:02,608 INFO L168 Benchmark]: RCFGBuilder took 1019.53 ms. Allocated memory was 69.2 MB in the beginning and 83.9 MB in the end (delta: 14.7 MB). Free memory was 48.3 MB in the beginning and 59.0 MB in the end (delta: -10.7 MB). Peak memory consumption was 20.7 MB. Max. memory is 16.1 GB. [2020-11-30 01:16:02,609 INFO L168 Benchmark]: TraceAbstraction took 39729.25 ms. Allocated memory was 83.9 MB in the beginning and 102.8 MB in the end (delta: 18.9 MB). Free memory was 58.6 MB in the beginning and 53.3 MB in the end (delta: 5.4 MB). Peak memory consumption was 52.0 MB. Max. memory is 16.1 GB. [2020-11-30 01:16:02,610 INFO L168 Benchmark]: Witness Printer took 131.31 ms. Allocated memory is still 102.8 MB. Free memory was 53.3 MB in the beginning and 48.0 MB in the end (delta: 5.3 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2020-11-30 01:16:02,615 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.38 ms. Allocated memory is still 69.2 MB. Free memory is still 52.1 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 477.10 ms. Allocated memory is still 69.2 MB. Free memory was 50.6 MB in the beginning and 52.2 MB in the end (delta: -1.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 104.79 ms. Allocated memory is still 69.2 MB. Free memory was 52.2 MB in the beginning and 50.3 MB in the end (delta: 1.9 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 94.70 ms. Allocated memory is still 69.2 MB. Free memory was 50.1 MB in the beginning and 48.5 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 1019.53 ms. Allocated memory was 69.2 MB in the beginning and 83.9 MB in the end (delta: 14.7 MB). Free memory was 48.3 MB in the beginning and 59.0 MB in the end (delta: -10.7 MB). Peak memory consumption was 20.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 39729.25 ms. Allocated memory was 83.9 MB in the beginning and 102.8 MB in the end (delta: 18.9 MB). Free memory was 58.6 MB in the beginning and 53.3 MB in the end (delta: 5.4 MB). Peak memory consumption was 52.0 MB. Max. memory is 16.1 GB. * Witness Printer took 131.31 ms. Allocated memory is still 102.8 MB. Free memory was 53.3 MB in the beginning and 48.0 MB in the end (delta: 5.3 MB). Peak memory consumption was 6.3 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: 31.4s, OverallIterations: 19, TraceHistogramMax: 1, AutomataDifference: 18.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 8.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1146 SDtfs, 2441 SDslu, 4709 SDs, 0 SdLazy, 1985 SolverSat, 266 SolverUnsat, 1 SolverUnknown, 0 SolverNotchecked, 9.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1045 GetRequests, 768 SyntacticMatches, 12 SemanticMatches, 265 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 939 ImplicationChecksByTransitivity, 13.0s 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, 1.1s HoareSimplificationTime, 14 FomulaSimplificationsInter, 84227 FormulaSimplificationTreeSizeReductionInter, 6.9s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.4s SsaConstructionTime, 1.1s SatisfiabilityAnalysisTime, 5.7s InterpolantComputationTime, 479 NumberOfCodeBlocks, 479 NumberOfCodeBlocksAsserted, 19 NumberOfCheckSat, 920 ConstructedInterpolants, 33 QuantifiedInterpolants, 95799 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...