./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/double_req_bl_1231b.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_f4dec4d7-d49f-41f5-81fe-9c0fe935b6e6/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_f4dec4d7-d49f-41f5-81fe-9c0fe935b6e6/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_f4dec4d7-d49f-41f5-81fe-9c0fe935b6e6/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_f4dec4d7-d49f-41f5-81fe-9c0fe935b6e6/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_1231b.c -s /tmp/vcloud-vcloud-master/worker/run_dir_f4dec4d7-d49f-41f5-81fe-9c0fe935b6e6/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_f4dec4d7-d49f-41f5-81fe-9c0fe935b6e6/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 51c288f40d68a666851060907ab6bc13e9c502d2 ........................................................................................................................................................................................................................................................................................................................................................................................................................................................ 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_f4dec4d7-d49f-41f5-81fe-9c0fe935b6e6/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_f4dec4d7-d49f-41f5-81fe-9c0fe935b6e6/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_f4dec4d7-d49f-41f5-81fe-9c0fe935b6e6/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_f4dec4d7-d49f-41f5-81fe-9c0fe935b6e6/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_1231b.c -s /tmp/vcloud-vcloud-master/worker/run_dir_f4dec4d7-d49f-41f5-81fe-9c0fe935b6e6/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_f4dec4d7-d49f-41f5-81fe-9c0fe935b6e6/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 51c288f40d68a666851060907ab6bc13e9c502d2 ......................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-30 00:44:39,997 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-30 00:44:40,021 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-30 00:44:40,072 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-30 00:44:40,073 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-30 00:44:40,074 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-30 00:44:40,076 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-30 00:44:40,078 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-30 00:44:40,080 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-30 00:44:40,082 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-30 00:44:40,083 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-30 00:44:40,084 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-30 00:44:40,085 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-30 00:44:40,086 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-30 00:44:40,088 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-30 00:44:40,089 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-30 00:44:40,090 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-30 00:44:40,092 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-30 00:44:40,094 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-30 00:44:40,097 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-30 00:44:40,099 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-30 00:44:40,101 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-30 00:44:40,102 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-30 00:44:40,103 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-30 00:44:40,107 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-30 00:44:40,110 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-30 00:44:40,111 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-30 00:44:40,114 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-30 00:44:40,115 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-30 00:44:40,117 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-30 00:44:40,117 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-30 00:44:40,118 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-30 00:44:40,120 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-30 00:44:40,121 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-30 00:44:40,123 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-30 00:44:40,124 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-30 00:44:40,126 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-30 00:44:40,126 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-30 00:44:40,126 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-30 00:44:40,128 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-30 00:44:40,129 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-30 00:44:40,131 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_f4dec4d7-d49f-41f5-81fe-9c0fe935b6e6/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-30 00:44:40,166 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-30 00:44:40,167 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-30 00:44:40,168 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-30 00:44:40,168 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-30 00:44:40,168 INFO L138 SettingsManager]: * Use SBE=true [2020-11-30 00:44:40,169 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-30 00:44:40,169 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-30 00:44:40,169 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-30 00:44:40,169 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-30 00:44:40,170 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-30 00:44:40,170 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-30 00:44:40,170 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-30 00:44:40,170 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-30 00:44:40,170 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-30 00:44:40,171 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-30 00:44:40,171 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-30 00:44:40,171 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-30 00:44:40,171 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-30 00:44:40,172 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-30 00:44:40,172 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-30 00:44:40,172 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-30 00:44:40,172 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-30 00:44:40,173 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-30 00:44:40,173 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-30 00:44:40,173 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-30 00:44:40,173 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-30 00:44:40,173 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-30 00:44:40,174 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-30 00:44:40,174 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-30 00:44:40,174 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_f4dec4d7-d49f-41f5-81fe-9c0fe935b6e6/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_f4dec4d7-d49f-41f5-81fe-9c0fe935b6e6/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 51c288f40d68a666851060907ab6bc13e9c502d2 [2020-11-30 00:44:40,461 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-30 00:44:40,499 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-30 00:44:40,503 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-30 00:44:40,505 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-30 00:44:40,507 INFO L275 PluginConnector]: CDTParser initialized [2020-11-30 00:44:40,508 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_f4dec4d7-d49f-41f5-81fe-9c0fe935b6e6/bin/uautomizer/../../sv-benchmarks/c/float-newlib/double_req_bl_1231b.c [2020-11-30 00:44:40,594 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_f4dec4d7-d49f-41f5-81fe-9c0fe935b6e6/bin/uautomizer/data/71da32142/88ab34c5764442bca706915af36732bf/FLAG053e60fdf [2020-11-30 00:44:41,221 INFO L306 CDTParser]: Found 1 translation units. [2020-11-30 00:44:41,223 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_f4dec4d7-d49f-41f5-81fe-9c0fe935b6e6/sv-benchmarks/c/float-newlib/double_req_bl_1231b.c [2020-11-30 00:44:41,237 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_f4dec4d7-d49f-41f5-81fe-9c0fe935b6e6/bin/uautomizer/data/71da32142/88ab34c5764442bca706915af36732bf/FLAG053e60fdf [2020-11-30 00:44:41,571 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_f4dec4d7-d49f-41f5-81fe-9c0fe935b6e6/bin/uautomizer/data/71da32142/88ab34c5764442bca706915af36732bf [2020-11-30 00:44:41,573 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-30 00:44:41,575 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-30 00:44:41,577 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-30 00:44:41,577 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-30 00:44:41,580 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-30 00:44:41,581 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 12:44:41" (1/1) ... [2020-11-30 00:44:41,584 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3dbd9833 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:44:41, skipping insertion in model container [2020-11-30 00:44:41,584 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 12:44:41" (1/1) ... [2020-11-30 00:44:41,592 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-30 00:44:41,607 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-30 00:44:41,801 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 00:44:41,810 INFO L203 MainTranslator]: Completed pre-run [2020-11-30 00:44:41,834 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 00:44:41,851 INFO L208 MainTranslator]: Completed translation [2020-11-30 00:44:41,851 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:44:41 WrapperNode [2020-11-30 00:44:41,851 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-30 00:44:41,853 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-30 00:44:41,853 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-30 00:44:41,853 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-30 00:44:41,862 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:44:41" (1/1) ... [2020-11-30 00:44:41,870 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:44:41" (1/1) ... [2020-11-30 00:44:41,895 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-30 00:44:41,896 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-30 00:44:41,896 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-30 00:44:41,897 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-30 00:44:41,906 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:44:41" (1/1) ... [2020-11-30 00:44:41,906 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:44:41" (1/1) ... [2020-11-30 00:44:41,909 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:44:41" (1/1) ... [2020-11-30 00:44:41,909 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:44:41" (1/1) ... [2020-11-30 00:44:41,917 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:44:41" (1/1) ... [2020-11-30 00:44:41,922 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:44:41" (1/1) ... [2020-11-30 00:44:41,924 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:44:41" (1/1) ... [2020-11-30 00:44:41,927 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-30 00:44:41,928 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-30 00:44:41,928 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-30 00:44:41,928 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-30 00:44:41,929 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:44:41" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f4dec4d7-d49f-41f5-81fe-9c0fe935b6e6/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 00:44:41,993 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-30 00:44:41,993 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-30 00:44:41,994 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-11-30 00:44:41,994 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-30 00:44:41,994 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-30 00:44:41,994 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-30 00:44:41,994 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-30 00:44:42,498 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-30 00:44:42,498 INFO L298 CfgBuilder]: Removed 18 assume(true) statements. [2020-11-30 00:44:42,500 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 12:44:42 BoogieIcfgContainer [2020-11-30 00:44:42,500 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-30 00:44:42,501 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-30 00:44:42,502 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-30 00:44:42,510 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-30 00:44:42,510 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.11 12:44:41" (1/3) ... [2020-11-30 00:44:42,512 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7671dabb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 12:44:42, skipping insertion in model container [2020-11-30 00:44:42,512 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:44:41" (2/3) ... [2020-11-30 00:44:42,512 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7671dabb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 12:44:42, skipping insertion in model container [2020-11-30 00:44:42,513 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 12:44:42" (3/3) ... [2020-11-30 00:44:42,514 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1231b.c [2020-11-30 00:44:42,526 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-30 00:44:42,531 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-30 00:44:42,543 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-30 00:44:42,584 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-30 00:44:42,584 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-30 00:44:42,584 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-30 00:44:42,585 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-30 00:44:42,586 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-30 00:44:42,586 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-30 00:44:42,586 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-30 00:44:42,586 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-30 00:44:42,602 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states. [2020-11-30 00:44:42,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-30 00:44:42,609 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:44:42,611 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:44:42,612 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:44:42,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:44:42,619 INFO L82 PathProgramCache]: Analyzing trace with hash -124750094, now seen corresponding path program 1 times [2020-11-30 00:44:42,629 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:44:42,630 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [655769538] [2020-11-30 00:44:42,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:44:42,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:44:42,856 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 00:44:42,857 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [655769538] [2020-11-30 00:44:42,858 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:44:42,858 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-30 00:44:42,859 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [312173910] [2020-11-30 00:44:42,863 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-30 00:44:42,864 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:44:42,910 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-30 00:44:42,915 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-30 00:44:42,917 INFO L87 Difference]: Start difference. First operand 31 states. Second operand 2 states. [2020-11-30 00:44:42,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:44:42,937 INFO L93 Difference]: Finished difference Result 57 states and 88 transitions. [2020-11-30 00:44:42,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-30 00:44:42,939 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 11 [2020-11-30 00:44:42,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:44:42,960 INFO L225 Difference]: With dead ends: 57 [2020-11-30 00:44:42,966 INFO L226 Difference]: Without dead ends: 26 [2020-11-30 00:44:42,970 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-30 00:44:42,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-11-30 00:44:43,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2020-11-30 00:44:43,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-11-30 00:44:43,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 36 transitions. [2020-11-30 00:44:43,011 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 36 transitions. Word has length 11 [2020-11-30 00:44:43,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:44:43,013 INFO L481 AbstractCegarLoop]: Abstraction has 26 states and 36 transitions. [2020-11-30 00:44:43,013 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-30 00:44:43,014 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 36 transitions. [2020-11-30 00:44:43,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-30 00:44:43,014 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:44:43,015 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:44:43,015 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-30 00:44:43,016 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:44:43,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:44:43,018 INFO L82 PathProgramCache]: Analyzing trace with hash -1352831344, now seen corresponding path program 1 times [2020-11-30 00:44:43,019 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:44:43,020 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1224823815] [2020-11-30 00:44:43,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:44:43,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:44:43,163 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 00:44:43,164 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1224823815] [2020-11-30 00:44:43,164 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:44:43,164 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-30 00:44:43,164 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1015801359] [2020-11-30 00:44:43,165 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-30 00:44:43,166 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:44:43,166 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-30 00:44:43,167 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-30 00:44:43,167 INFO L87 Difference]: Start difference. First operand 26 states and 36 transitions. Second operand 4 states. [2020-11-30 00:44:43,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:44:43,251 INFO L93 Difference]: Finished difference Result 40 states and 51 transitions. [2020-11-30 00:44:43,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-30 00:44:43,252 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-11-30 00:44:43,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:44:43,253 INFO L225 Difference]: With dead ends: 40 [2020-11-30 00:44:43,254 INFO L226 Difference]: Without dead ends: 36 [2020-11-30 00:44:43,254 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 00:44:43,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-11-30 00:44:43,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 28. [2020-11-30 00:44:43,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-11-30 00:44:43,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 38 transitions. [2020-11-30 00:44:43,260 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 38 transitions. Word has length 12 [2020-11-30 00:44:43,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:44:43,260 INFO L481 AbstractCegarLoop]: Abstraction has 28 states and 38 transitions. [2020-11-30 00:44:43,260 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-30 00:44:43,261 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 38 transitions. [2020-11-30 00:44:43,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-11-30 00:44:43,261 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:44:43,261 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:44:43,262 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-30 00:44:43,262 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:44:43,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:44:43,263 INFO L82 PathProgramCache]: Analyzing trace with hash -1913129681, now seen corresponding path program 1 times [2020-11-30 00:44:43,263 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:44:43,263 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [738490572] [2020-11-30 00:44:43,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:44:43,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:44:43,355 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 00:44:43,355 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [738490572] [2020-11-30 00:44:43,355 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:44:43,355 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-30 00:44:43,356 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1689070951] [2020-11-30 00:44:43,356 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-30 00:44:43,356 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:44:43,357 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-30 00:44:43,357 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-30 00:44:43,357 INFO L87 Difference]: Start difference. First operand 28 states and 38 transitions. Second operand 4 states. [2020-11-30 00:44:43,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:44:43,419 INFO L93 Difference]: Finished difference Result 42 states and 53 transitions. [2020-11-30 00:44:43,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-30 00:44:43,421 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-11-30 00:44:43,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:44:43,422 INFO L225 Difference]: With dead ends: 42 [2020-11-30 00:44:43,422 INFO L226 Difference]: Without dead ends: 38 [2020-11-30 00:44:43,423 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 00:44:43,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-11-30 00:44:43,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 28. [2020-11-30 00:44:43,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-11-30 00:44:43,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 38 transitions. [2020-11-30 00:44:43,428 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 38 transitions. Word has length 13 [2020-11-30 00:44:43,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:44:43,428 INFO L481 AbstractCegarLoop]: Abstraction has 28 states and 38 transitions. [2020-11-30 00:44:43,428 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-30 00:44:43,428 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 38 transitions. [2020-11-30 00:44:43,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-11-30 00:44:43,429 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:44:43,429 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:44:43,429 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-30 00:44:43,430 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:44:43,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:44:43,430 INFO L82 PathProgramCache]: Analyzing trace with hash -1959363189, now seen corresponding path program 1 times [2020-11-30 00:44:43,430 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:44:43,430 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1020453855] [2020-11-30 00:44:43,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:44:43,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:44:43,514 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 00:44:43,515 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1020453855] [2020-11-30 00:44:43,515 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:44:43,515 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-30 00:44:43,515 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [407059374] [2020-11-30 00:44:43,515 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-30 00:44:43,516 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:44:43,516 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-30 00:44:43,516 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-30 00:44:43,517 INFO L87 Difference]: Start difference. First operand 28 states and 38 transitions. Second operand 4 states. [2020-11-30 00:44:43,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:44:43,621 INFO L93 Difference]: Finished difference Result 44 states and 55 transitions. [2020-11-30 00:44:43,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-30 00:44:43,622 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2020-11-30 00:44:43,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:44:43,623 INFO L225 Difference]: With dead ends: 44 [2020-11-30 00:44:43,623 INFO L226 Difference]: Without dead ends: 40 [2020-11-30 00:44:43,623 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 00:44:43,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-11-30 00:44:43,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 28. [2020-11-30 00:44:43,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-11-30 00:44:43,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 38 transitions. [2020-11-30 00:44:43,629 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 38 transitions. Word has length 14 [2020-11-30 00:44:43,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:44:43,629 INFO L481 AbstractCegarLoop]: Abstraction has 28 states and 38 transitions. [2020-11-30 00:44:43,630 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-30 00:44:43,630 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 38 transitions. [2020-11-30 00:44:43,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-11-30 00:44:43,630 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:44:43,631 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:44:43,631 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-30 00:44:43,631 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:44:43,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:44:43,631 INFO L82 PathProgramCache]: Analyzing trace with hash 1045511114, now seen corresponding path program 1 times [2020-11-30 00:44:43,632 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:44:43,632 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2013099215] [2020-11-30 00:44:43,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:44:43,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:44:43,703 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 00:44:43,704 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2013099215] [2020-11-30 00:44:43,704 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:44:43,704 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-30 00:44:43,704 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [187201054] [2020-11-30 00:44:43,705 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-30 00:44:43,705 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:44:43,705 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-30 00:44:43,706 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-30 00:44:43,706 INFO L87 Difference]: Start difference. First operand 28 states and 38 transitions. Second operand 4 states. [2020-11-30 00:44:43,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:44:43,766 INFO L93 Difference]: Finished difference Result 42 states and 53 transitions. [2020-11-30 00:44:43,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-30 00:44:43,767 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2020-11-30 00:44:43,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:44:43,768 INFO L225 Difference]: With dead ends: 42 [2020-11-30 00:44:43,768 INFO L226 Difference]: Without dead ends: 38 [2020-11-30 00:44:43,768 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 00:44:43,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-11-30 00:44:43,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 28. [2020-11-30 00:44:43,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-11-30 00:44:43,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 38 transitions. [2020-11-30 00:44:43,773 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 38 transitions. Word has length 15 [2020-11-30 00:44:43,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:44:43,773 INFO L481 AbstractCegarLoop]: Abstraction has 28 states and 38 transitions. [2020-11-30 00:44:43,773 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-30 00:44:43,773 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 38 transitions. [2020-11-30 00:44:43,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-11-30 00:44:43,774 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:44:43,774 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:44:43,774 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-30 00:44:43,775 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:44:43,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:44:43,775 INFO L82 PathProgramCache]: Analyzing trace with hash 1102769416, now seen corresponding path program 1 times [2020-11-30 00:44:43,775 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:44:43,776 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1007695474] [2020-11-30 00:44:43,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:44:43,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:44:43,810 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:44:43,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:44:43,852 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:44:43,888 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 00:44:43,889 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-30 00:44:43,889 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-30 00:44:43,935 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.11 12:44:43 BoogieIcfgContainer [2020-11-30 00:44:43,936 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-30 00:44:43,936 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-30 00:44:43,937 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-30 00:44:43,937 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-30 00:44:43,937 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 12:44:42" (3/4) ... [2020-11-30 00:44:43,940 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-11-30 00:44:43,941 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-30 00:44:43,944 INFO L168 Benchmark]: Toolchain (without parser) took 2366.82 ms. Allocated memory was 94.4 MB in the beginning and 119.5 MB in the end (delta: 25.2 MB). Free memory was 59.2 MB in the beginning and 77.2 MB in the end (delta: -18.0 MB). Peak memory consumption was 6.5 MB. Max. memory is 16.1 GB. [2020-11-30 00:44:43,946 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 94.4 MB. Free memory was 75.8 MB in the beginning and 75.7 MB in the end (delta: 59.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 00:44:43,948 INFO L168 Benchmark]: CACSL2BoogieTranslator took 275.14 ms. Allocated memory is still 94.4 MB. Free memory was 59.0 MB in the beginning and 71.0 MB in the end (delta: -11.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-30 00:44:43,953 INFO L168 Benchmark]: Boogie Procedure Inliner took 42.94 ms. Allocated memory is still 94.4 MB. Free memory was 71.0 MB in the beginning and 69.1 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 00:44:43,954 INFO L168 Benchmark]: Boogie Preprocessor took 30.74 ms. Allocated memory is still 94.4 MB. Free memory was 69.1 MB in the beginning and 67.7 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 00:44:43,955 INFO L168 Benchmark]: RCFGBuilder took 572.28 ms. Allocated memory is still 94.4 MB. Free memory was 67.7 MB in the beginning and 48.0 MB in the end (delta: 19.7 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. [2020-11-30 00:44:43,956 INFO L168 Benchmark]: TraceAbstraction took 1434.39 ms. Allocated memory was 94.4 MB in the beginning and 119.5 MB in the end (delta: 25.2 MB). Free memory was 47.7 MB in the beginning and 77.8 MB in the end (delta: -30.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 00:44:43,959 INFO L168 Benchmark]: Witness Printer took 4.55 ms. Allocated memory is still 119.5 MB. Free memory was 77.8 MB in the beginning and 77.2 MB in the end (delta: 635.3 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 00:44:43,968 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 94.4 MB. Free memory was 75.8 MB in the beginning and 75.7 MB in the end (delta: 59.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 275.14 ms. Allocated memory is still 94.4 MB. Free memory was 59.0 MB in the beginning and 71.0 MB in the end (delta: -11.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 42.94 ms. Allocated memory is still 94.4 MB. Free memory was 71.0 MB in the beginning and 69.1 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 30.74 ms. Allocated memory is still 94.4 MB. Free memory was 69.1 MB in the beginning and 67.7 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 572.28 ms. Allocated memory is still 94.4 MB. Free memory was 67.7 MB in the beginning and 48.0 MB in the end (delta: 19.7 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1434.39 ms. Allocated memory was 94.4 MB in the beginning and 119.5 MB in the end (delta: 25.2 MB). Free memory was 47.7 MB in the beginning and 77.8 MB in the end (delta: -30.1 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 4.55 ms. Allocated memory is still 119.5 MB. Free memory was 77.8 MB in the beginning and 77.2 MB in the end (delta: 635.3 kB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 3]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 69, overapproximation of someBinaryArithmeticDOUBLEoperation at line 63. Possible FailurePath: [L62] double x = __VERIFIER_nondet_double(); [L63] double y = 0.0 / 0.0; [L18] return x != x; [L64] COND TRUE !isnan_double(x) [L20] __uint32_t msw, lsw; [L23] ieee_double_shape_type ew_u; [L24] ew_u.value = (x) [L25] EXPR ew_u.parts.msw [L25] (msw) = ew_u.parts.msw [L26] EXPR ew_u.parts.lsw [L26] (lsw) = ew_u.parts.lsw [L29-L30] COND FALSE !((msw == 0x00000000 && lsw == 0x00000000) || (msw == 0x80000000 && lsw == 0x00000000)) [L32-L33] COND FALSE !((msw >= 0x00100000 && msw <= 0x7fefffff) || (msw >= 0x80100000 && msw <= 0xffefffff)) [L35-L36] COND FALSE !(( msw <= 0x000fffff) || (msw >= 0x80000000 && msw <= 0x800fffff)) [L39-L40] COND FALSE !((msw == 0x7ff00000 && lsw == 0x00000000) || (msw == 0xfff00000 && lsw == 0x00000000)) [L43] return 0; [L47] COND TRUE __fpclassify_double(x) == 0 [L48] return y; [L66] double res = fmin_double(x, y); [L69] COND TRUE res != x [L3] __assert_fail("0", "double_req_bl_1231b.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 31 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.3s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 209 SDtfs, 40 SDslu, 242 SDs, 0 SdLazy, 84 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 22 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=31occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 40 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 80 NumberOfCodeBlocks, 80 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 60 ConstructedInterpolants, 0 QuantifiedInterpolants, 930 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 00:44:46,525 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-30 00:44:46,528 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-30 00:44:46,562 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-30 00:44:46,563 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-30 00:44:46,565 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-30 00:44:46,567 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-30 00:44:46,569 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-30 00:44:46,571 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-30 00:44:46,573 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-30 00:44:46,574 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-30 00:44:46,581 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-30 00:44:46,582 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-30 00:44:46,583 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-30 00:44:46,584 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-30 00:44:46,586 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-30 00:44:46,587 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-30 00:44:46,592 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-30 00:44:46,595 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-30 00:44:46,599 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-30 00:44:46,609 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-30 00:44:46,611 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-30 00:44:46,612 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-30 00:44:46,614 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-30 00:44:46,618 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-30 00:44:46,626 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-30 00:44:46,626 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-30 00:44:46,627 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-30 00:44:46,628 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-30 00:44:46,629 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-30 00:44:46,631 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-30 00:44:46,632 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-30 00:44:46,633 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-30 00:44:46,635 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-30 00:44:46,636 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-30 00:44:46,636 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-30 00:44:46,637 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-30 00:44:46,637 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-30 00:44:46,637 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-30 00:44:46,638 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-30 00:44:46,640 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-30 00:44:46,641 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_f4dec4d7-d49f-41f5-81fe-9c0fe935b6e6/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2020-11-30 00:44:46,680 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-30 00:44:46,680 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-30 00:44:46,682 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-30 00:44:46,682 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-30 00:44:46,682 INFO L138 SettingsManager]: * Use SBE=true [2020-11-30 00:44:46,683 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-30 00:44:46,683 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-30 00:44:46,683 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-30 00:44:46,683 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-30 00:44:46,683 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-30 00:44:46,684 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-30 00:44:46,684 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-30 00:44:46,684 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-11-30 00:44:46,684 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-11-30 00:44:46,685 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-30 00:44:46,685 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-30 00:44:46,685 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-30 00:44:46,685 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-30 00:44:46,685 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-30 00:44:46,686 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-30 00:44:46,686 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-30 00:44:46,686 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-30 00:44:46,686 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-30 00:44:46,687 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-30 00:44:46,687 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-30 00:44:46,687 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-30 00:44:46,687 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2020-11-30 00:44:46,688 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-11-30 00:44:46,688 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-30 00:44:46,688 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-30 00:44:46,688 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-30 00:44:46,688 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_f4dec4d7-d49f-41f5-81fe-9c0fe935b6e6/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_f4dec4d7-d49f-41f5-81fe-9c0fe935b6e6/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 51c288f40d68a666851060907ab6bc13e9c502d2 [2020-11-30 00:44:47,025 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-30 00:44:47,049 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-30 00:44:47,051 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-30 00:44:47,053 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-30 00:44:47,054 INFO L275 PluginConnector]: CDTParser initialized [2020-11-30 00:44:47,055 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_f4dec4d7-d49f-41f5-81fe-9c0fe935b6e6/bin/uautomizer/../../sv-benchmarks/c/float-newlib/double_req_bl_1231b.c [2020-11-30 00:44:47,125 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_f4dec4d7-d49f-41f5-81fe-9c0fe935b6e6/bin/uautomizer/data/e1553b97d/14fe0859dd374c9c91c706ca372adf2d/FLAG1171290e5 [2020-11-30 00:44:47,620 INFO L306 CDTParser]: Found 1 translation units. [2020-11-30 00:44:47,620 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_f4dec4d7-d49f-41f5-81fe-9c0fe935b6e6/sv-benchmarks/c/float-newlib/double_req_bl_1231b.c [2020-11-30 00:44:47,629 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_f4dec4d7-d49f-41f5-81fe-9c0fe935b6e6/bin/uautomizer/data/e1553b97d/14fe0859dd374c9c91c706ca372adf2d/FLAG1171290e5 [2020-11-30 00:44:47,997 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_f4dec4d7-d49f-41f5-81fe-9c0fe935b6e6/bin/uautomizer/data/e1553b97d/14fe0859dd374c9c91c706ca372adf2d [2020-11-30 00:44:48,000 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-30 00:44:48,002 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-30 00:44:48,007 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-30 00:44:48,008 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-30 00:44:48,012 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-30 00:44:48,013 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 12:44:47" (1/1) ... [2020-11-30 00:44:48,020 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@38f897e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:44:48, skipping insertion in model container [2020-11-30 00:44:48,020 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 12:44:47" (1/1) ... [2020-11-30 00:44:48,027 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-30 00:44:48,047 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-30 00:44:48,225 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 00:44:48,238 INFO L203 MainTranslator]: Completed pre-run [2020-11-30 00:44:48,264 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 00:44:48,284 INFO L208 MainTranslator]: Completed translation [2020-11-30 00:44:48,285 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:44:48 WrapperNode [2020-11-30 00:44:48,285 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-30 00:44:48,286 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-30 00:44:48,286 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-30 00:44:48,286 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-30 00:44:48,300 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:44:48" (1/1) ... [2020-11-30 00:44:48,311 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:44:48" (1/1) ... [2020-11-30 00:44:48,370 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-30 00:44:48,371 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-30 00:44:48,371 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-30 00:44:48,371 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-30 00:44:48,385 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:44:48" (1/1) ... [2020-11-30 00:44:48,385 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:44:48" (1/1) ... [2020-11-30 00:44:48,395 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:44:48" (1/1) ... [2020-11-30 00:44:48,395 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:44:48" (1/1) ... [2020-11-30 00:44:48,405 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:44:48" (1/1) ... [2020-11-30 00:44:48,410 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:44:48" (1/1) ... [2020-11-30 00:44:48,413 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:44:48" (1/1) ... [2020-11-30 00:44:48,416 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-30 00:44:48,417 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-30 00:44:48,418 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-30 00:44:48,418 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-30 00:44:48,419 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:44:48" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f4dec4d7-d49f-41f5-81fe-9c0fe935b6e6/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 00:44:48,491 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2020-11-30 00:44:48,493 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-11-30 00:44:48,493 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-30 00:44:48,493 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2020-11-30 00:44:48,493 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-30 00:44:48,493 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-30 00:44:48,493 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-30 00:44:49,184 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-30 00:44:49,184 INFO L298 CfgBuilder]: Removed 18 assume(true) statements. [2020-11-30 00:44:49,186 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 12:44:49 BoogieIcfgContainer [2020-11-30 00:44:49,187 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-30 00:44:49,189 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-30 00:44:49,189 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-30 00:44:49,192 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-30 00:44:49,192 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.11 12:44:47" (1/3) ... [2020-11-30 00:44:49,194 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1bd64e5d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 12:44:49, skipping insertion in model container [2020-11-30 00:44:49,194 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:44:48" (2/3) ... [2020-11-30 00:44:49,194 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1bd64e5d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 12:44:49, skipping insertion in model container [2020-11-30 00:44:49,194 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 12:44:49" (3/3) ... [2020-11-30 00:44:49,199 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1231b.c [2020-11-30 00:44:49,210 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-30 00:44:49,214 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-30 00:44:49,225 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-30 00:44:49,261 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-30 00:44:49,261 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-30 00:44:49,262 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-30 00:44:49,262 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-30 00:44:49,262 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-30 00:44:49,262 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-30 00:44:49,263 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-30 00:44:49,268 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-30 00:44:49,282 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states. [2020-11-30 00:44:49,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-30 00:44:49,288 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:44:49,289 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:44:49,289 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:44:49,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:44:49,296 INFO L82 PathProgramCache]: Analyzing trace with hash -124750094, now seen corresponding path program 1 times [2020-11-30 00:44:49,308 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-30 00:44:49,309 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1979121321] [2020-11-30 00:44:49,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f4dec4d7-d49f-41f5-81fe-9c0fe935b6e6/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 00:44:49,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:44:49,454 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 1 conjunts are in the unsatisfiable core [2020-11-30 00:44:49,459 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:44:49,473 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 00:44:49,474 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 00:44:49,478 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 00:44:49,479 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1979121321] [2020-11-30 00:44:49,479 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:44:49,480 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-11-30 00:44:49,481 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1664360979] [2020-11-30 00:44:49,485 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-30 00:44:49,485 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-30 00:44:49,497 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-30 00:44:49,498 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-30 00:44:49,500 INFO L87 Difference]: Start difference. First operand 31 states. Second operand 2 states. [2020-11-30 00:44:49,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:44:49,518 INFO L93 Difference]: Finished difference Result 57 states and 88 transitions. [2020-11-30 00:44:49,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-30 00:44:49,519 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 11 [2020-11-30 00:44:49,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:44:49,528 INFO L225 Difference]: With dead ends: 57 [2020-11-30 00:44:49,529 INFO L226 Difference]: Without dead ends: 26 [2020-11-30 00:44:49,532 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 20 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 00:44:49,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-11-30 00:44:49,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2020-11-30 00:44:49,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-11-30 00:44:49,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 36 transitions. [2020-11-30 00:44:49,568 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 36 transitions. Word has length 11 [2020-11-30 00:44:49,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:44:49,568 INFO L481 AbstractCegarLoop]: Abstraction has 26 states and 36 transitions. [2020-11-30 00:44:49,568 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-30 00:44:49,568 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 36 transitions. [2020-11-30 00:44:49,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-30 00:44:49,569 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:44:49,569 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:44:49,777 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-11-30 00:44:49,777 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:44:49,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:44:49,778 INFO L82 PathProgramCache]: Analyzing trace with hash -1352831344, now seen corresponding path program 1 times [2020-11-30 00:44:49,779 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-30 00:44:49,779 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [575702030] [2020-11-30 00:44:49,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f4dec4d7-d49f-41f5-81fe-9c0fe935b6e6/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 00:44:49,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:44:49,931 INFO L263 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 3 conjunts are in the unsatisfiable core [2020-11-30 00:44:49,932 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:44:49,974 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:44:49,975 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 00:44:50,031 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 00:44:50,032 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [575702030] [2020-11-30 00:44:50,032 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:44:50,032 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2020-11-30 00:44:50,032 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1109605853] [2020-11-30 00:44:50,033 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-30 00:44:50,034 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-30 00:44:50,042 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-30 00:44:50,043 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-30 00:44:50,043 INFO L87 Difference]: Start difference. First operand 26 states and 36 transitions. Second operand 6 states. [2020-11-30 00:44:50,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:44:50,382 INFO L93 Difference]: Finished difference Result 50 states and 63 transitions. [2020-11-30 00:44:50,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-30 00:44:50,383 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 12 [2020-11-30 00:44:50,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:44:50,385 INFO L225 Difference]: With dead ends: 50 [2020-11-30 00:44:50,385 INFO L226 Difference]: Without dead ends: 46 [2020-11-30 00:44:50,386 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 18 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 00:44:50,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-11-30 00:44:50,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 28. [2020-11-30 00:44:50,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-11-30 00:44:50,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 38 transitions. [2020-11-30 00:44:50,393 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 38 transitions. Word has length 12 [2020-11-30 00:44:50,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:44:50,394 INFO L481 AbstractCegarLoop]: Abstraction has 28 states and 38 transitions. [2020-11-30 00:44:50,394 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-30 00:44:50,394 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 38 transitions. [2020-11-30 00:44:50,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-11-30 00:44:50,395 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:44:50,395 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:44:50,616 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-11-30 00:44:50,617 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:44:50,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:44:50,617 INFO L82 PathProgramCache]: Analyzing trace with hash 1102769416, now seen corresponding path program 1 times [2020-11-30 00:44:50,618 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-30 00:44:50,619 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1026961802] [2020-11-30 00:44:50,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f4dec4d7-d49f-41f5-81fe-9c0fe935b6e6/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 00:44:50,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:44:50,825 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:44:50,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:44:50,933 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:44:50,985 INFO L173 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2020-11-30 00:44:50,985 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-30 00:44:51,195 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-11-30 00:44:51,227 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.11 12:44:51 BoogieIcfgContainer [2020-11-30 00:44:51,227 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-30 00:44:51,228 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-30 00:44:51,228 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-30 00:44:51,229 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-30 00:44:51,229 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 12:44:49" (3/4) ... [2020-11-30 00:44:51,232 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-11-30 00:44:51,278 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_f4dec4d7-d49f-41f5-81fe-9c0fe935b6e6/bin/uautomizer/witness.graphml [2020-11-30 00:44:51,278 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-30 00:44:51,281 INFO L168 Benchmark]: Toolchain (without parser) took 3277.96 ms. Allocated memory was 48.2 MB in the beginning and 71.3 MB in the end (delta: 23.1 MB). Free memory was 23.7 MB in the beginning and 44.9 MB in the end (delta: -21.2 MB). Peak memory consumption was 2.4 MB. Max. memory is 16.1 GB. [2020-11-30 00:44:51,282 INFO L168 Benchmark]: CDTParser took 0.33 ms. Allocated memory is still 48.2 MB. Free memory was 30.2 MB in the beginning and 30.2 MB in the end (delta: 20.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 00:44:51,282 INFO L168 Benchmark]: CACSL2BoogieTranslator took 277.91 ms. Allocated memory is still 48.2 MB. Free memory was 23.6 MB in the beginning and 23.9 MB in the end (delta: -315.0 kB). Peak memory consumption was 3.4 MB. Max. memory is 16.1 GB. [2020-11-30 00:44:51,283 INFO L168 Benchmark]: Boogie Procedure Inliner took 84.45 ms. Allocated memory was 48.2 MB in the beginning and 58.7 MB in the end (delta: 10.5 MB). Free memory was 23.8 MB in the beginning and 40.8 MB in the end (delta: -17.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 00:44:51,284 INFO L168 Benchmark]: Boogie Preprocessor took 45.66 ms. Allocated memory is still 58.7 MB. Free memory was 40.8 MB in the beginning and 39.3 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 00:44:51,285 INFO L168 Benchmark]: RCFGBuilder took 769.22 ms. Allocated memory is still 58.7 MB. Free memory was 39.3 MB in the beginning and 30.5 MB in the end (delta: 8.7 MB). Peak memory consumption was 13.8 MB. Max. memory is 16.1 GB. [2020-11-30 00:44:51,286 INFO L168 Benchmark]: TraceAbstraction took 2038.49 ms. Allocated memory was 58.7 MB in the beginning and 71.3 MB in the end (delta: 12.6 MB). Free memory was 30.1 MB in the beginning and 47.4 MB in the end (delta: -17.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 00:44:51,286 INFO L168 Benchmark]: Witness Printer took 50.51 ms. Allocated memory is still 71.3 MB. Free memory was 47.4 MB in the beginning and 44.9 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 00:44:51,290 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33 ms. Allocated memory is still 48.2 MB. Free memory was 30.2 MB in the beginning and 30.2 MB in the end (delta: 20.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 277.91 ms. Allocated memory is still 48.2 MB. Free memory was 23.6 MB in the beginning and 23.9 MB in the end (delta: -315.0 kB). Peak memory consumption was 3.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 84.45 ms. Allocated memory was 48.2 MB in the beginning and 58.7 MB in the end (delta: 10.5 MB). Free memory was 23.8 MB in the beginning and 40.8 MB in the end (delta: -17.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 45.66 ms. Allocated memory is still 58.7 MB. Free memory was 40.8 MB in the beginning and 39.3 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 769.22 ms. Allocated memory is still 58.7 MB. Free memory was 39.3 MB in the beginning and 30.5 MB in the end (delta: 8.7 MB). Peak memory consumption was 13.8 MB. Max. memory is 16.1 GB. * TraceAbstraction took 2038.49 ms. Allocated memory was 58.7 MB in the beginning and 71.3 MB in the end (delta: 12.6 MB). Free memory was 30.1 MB in the beginning and 47.4 MB in the end (delta: -17.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 50.51 ms. Allocated memory is still 71.3 MB. Free memory was 47.4 MB in the beginning and 44.9 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 3]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L62] double x = __VERIFIER_nondet_double(); [L63] double y = 0.0 / 0.0; [L18] return x != x; [L64] COND TRUE !isnan_double(x) [L20] __uint32_t msw, lsw; [L23] ieee_double_shape_type ew_u; [L24] ew_u.value = (x) [L25] EXPR ew_u.parts.msw [L25] (msw) = ew_u.parts.msw [L26] EXPR ew_u.parts.lsw [L26] (lsw) = ew_u.parts.lsw [L29-L30] COND FALSE !((msw == 0x00000000 && lsw == 0x00000000) || (msw == 0x80000000 && lsw == 0x00000000)) [L32-L33] COND FALSE !((msw >= 0x00100000 && msw <= 0x7fefffff) || (msw >= 0x80100000 && msw <= 0xffefffff)) [L35-L36] COND FALSE !(( msw <= 0x000fffff) || (msw >= 0x80000000 && msw <= 0x800fffff)) [L39-L40] COND FALSE !((msw == 0x7ff00000 && lsw == 0x00000000) || (msw == 0xfff00000 && lsw == 0x00000000)) [L43] return 0; [L47] COND TRUE __fpclassify_double(x) == 0 [L48] return y; [L66] double res = fmin_double(x, y); [L69] COND TRUE res != x [L3] __assert_fail("0", "double_req_bl_1231b.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 31 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.9s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 77 SDtfs, 30 SDslu, 98 SDs, 0 SdLazy, 27 SolverSat, 8 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 44 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=31occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 18 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 38 NumberOfCodeBlocks, 38 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 42 ConstructedInterpolants, 0 QuantifiedInterpolants, 552 SizeOfPredicates, 1 NumberOfNonLiveVariables, 101 ConjunctsInSsa, 4 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 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 incorrect! Received shutdown request...