./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/double_req_bl_1250.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_1c64f8d8-b14a-4945-996e-e2ae21a31bae/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_1c64f8d8-b14a-4945-996e-e2ae21a31bae/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_1c64f8d8-b14a-4945-996e-e2ae21a31bae/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_1c64f8d8-b14a-4945-996e-e2ae21a31bae/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_1250.c -s /tmp/vcloud-vcloud-master/worker/run_dir_1c64f8d8-b14a-4945-996e-e2ae21a31bae/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_1c64f8d8-b14a-4945-996e-e2ae21a31bae/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 216b013ad4da4eb5e85a87de58b407e30252b4c5 ....................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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_1c64f8d8-b14a-4945-996e-e2ae21a31bae/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_1c64f8d8-b14a-4945-996e-e2ae21a31bae/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_1c64f8d8-b14a-4945-996e-e2ae21a31bae/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_1c64f8d8-b14a-4945-996e-e2ae21a31bae/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_1250.c -s /tmp/vcloud-vcloud-master/worker/run_dir_1c64f8d8-b14a-4945-996e-e2ae21a31bae/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_1c64f8d8-b14a-4945-996e-e2ae21a31bae/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 216b013ad4da4eb5e85a87de58b407e30252b4c5 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-30 00:20:22,806 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-30 00:20:22,810 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-30 00:20:22,922 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-30 00:20:22,947 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-30 00:20:22,949 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-30 00:20:22,952 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-30 00:20:22,956 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-30 00:20:22,960 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-30 00:20:22,962 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-30 00:20:22,967 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-30 00:20:22,970 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-30 00:20:22,972 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-30 00:20:22,974 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-30 00:20:22,976 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-30 00:20:22,978 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-30 00:20:22,979 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-30 00:20:22,981 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-30 00:20:22,985 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-30 00:20:22,999 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-30 00:20:23,002 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-30 00:20:23,004 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-30 00:20:23,006 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-30 00:20:23,008 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-30 00:20:23,014 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-30 00:20:23,014 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-30 00:20:23,015 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-30 00:20:23,017 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-30 00:20:23,018 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-30 00:20:23,020 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-30 00:20:23,020 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-30 00:20:23,022 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-30 00:20:23,024 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-30 00:20:23,025 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-30 00:20:23,027 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-30 00:20:23,027 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-30 00:20:23,029 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-30 00:20:23,029 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-30 00:20:23,029 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-30 00:20:23,031 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-30 00:20:23,032 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-30 00:20:23,033 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_1c64f8d8-b14a-4945-996e-e2ae21a31bae/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-30 00:20:23,070 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-30 00:20:23,070 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-30 00:20:23,072 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-30 00:20:23,073 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-30 00:20:23,073 INFO L138 SettingsManager]: * Use SBE=true [2020-11-30 00:20:23,074 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-30 00:20:23,074 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-30 00:20:23,074 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-30 00:20:23,075 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-30 00:20:23,075 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-30 00:20:23,075 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-30 00:20:23,076 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-30 00:20:23,076 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-30 00:20:23,076 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-30 00:20:23,076 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-30 00:20:23,077 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-30 00:20:23,077 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-30 00:20:23,078 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-30 00:20:23,078 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-30 00:20:23,078 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-30 00:20:23,079 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-30 00:20:23,079 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-30 00:20:23,079 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-30 00:20:23,080 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-30 00:20:23,080 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-30 00:20:23,080 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-30 00:20:23,081 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-30 00:20:23,081 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-30 00:20:23,081 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-30 00:20:23,082 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_1c64f8d8-b14a-4945-996e-e2ae21a31bae/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_1c64f8d8-b14a-4945-996e-e2ae21a31bae/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 216b013ad4da4eb5e85a87de58b407e30252b4c5 [2020-11-30 00:20:23,516 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-30 00:20:23,581 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-30 00:20:23,585 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-30 00:20:23,586 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-30 00:20:23,590 INFO L275 PluginConnector]: CDTParser initialized [2020-11-30 00:20:23,592 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_1c64f8d8-b14a-4945-996e-e2ae21a31bae/bin/uautomizer/../../sv-benchmarks/c/float-newlib/double_req_bl_1250.c [2020-11-30 00:20:23,745 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_1c64f8d8-b14a-4945-996e-e2ae21a31bae/bin/uautomizer/data/5fac1dd42/78011770d873447a9041096b478bbc2e/FLAG3c7d11726 [2020-11-30 00:20:24,469 INFO L306 CDTParser]: Found 1 translation units. [2020-11-30 00:20:24,470 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_1c64f8d8-b14a-4945-996e-e2ae21a31bae/sv-benchmarks/c/float-newlib/double_req_bl_1250.c [2020-11-30 00:20:24,479 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_1c64f8d8-b14a-4945-996e-e2ae21a31bae/bin/uautomizer/data/5fac1dd42/78011770d873447a9041096b478bbc2e/FLAG3c7d11726 [2020-11-30 00:20:24,789 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_1c64f8d8-b14a-4945-996e-e2ae21a31bae/bin/uautomizer/data/5fac1dd42/78011770d873447a9041096b478bbc2e [2020-11-30 00:20:24,791 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-30 00:20:24,793 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-30 00:20:24,799 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-30 00:20:24,799 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-30 00:20:24,804 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-30 00:20:24,809 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 12:20:24" (1/1) ... [2020-11-30 00:20:24,811 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@73f1033b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:20:24, skipping insertion in model container [2020-11-30 00:20:24,812 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 12:20:24" (1/1) ... [2020-11-30 00:20:24,822 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-30 00:20:24,840 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-30 00:20:25,120 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 00:20:25,142 INFO L203 MainTranslator]: Completed pre-run [2020-11-30 00:20:25,187 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 00:20:25,210 INFO L208 MainTranslator]: Completed translation [2020-11-30 00:20:25,211 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:20:25 WrapperNode [2020-11-30 00:20:25,211 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-30 00:20:25,213 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-30 00:20:25,213 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-30 00:20:25,213 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-30 00:20:25,223 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:20:25" (1/1) ... [2020-11-30 00:20:25,252 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:20:25" (1/1) ... [2020-11-30 00:20:25,308 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-30 00:20:25,309 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-30 00:20:25,309 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-30 00:20:25,309 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-30 00:20:25,328 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:20:25" (1/1) ... [2020-11-30 00:20:25,328 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:20:25" (1/1) ... [2020-11-30 00:20:25,339 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:20:25" (1/1) ... [2020-11-30 00:20:25,339 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:20:25" (1/1) ... [2020-11-30 00:20:25,358 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:20:25" (1/1) ... [2020-11-30 00:20:25,363 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:20:25" (1/1) ... [2020-11-30 00:20:25,378 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:20:25" (1/1) ... [2020-11-30 00:20:25,381 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-30 00:20:25,395 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-30 00:20:25,396 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-30 00:20:25,396 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-30 00:20:25,397 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:20:25" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1c64f8d8-b14a-4945-996e-e2ae21a31bae/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 00:20:25,508 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-30 00:20:25,508 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-30 00:20:25,508 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-11-30 00:20:25,510 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-30 00:20:25,511 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-30 00:20:25,511 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-30 00:20:25,512 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-30 00:20:26,183 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-30 00:20:26,184 INFO L298 CfgBuilder]: Removed 18 assume(true) statements. [2020-11-30 00:20:26,186 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 12:20:26 BoogieIcfgContainer [2020-11-30 00:20:26,186 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-30 00:20:26,188 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-30 00:20:26,188 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-30 00:20:26,198 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-30 00:20:26,198 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.11 12:20:24" (1/3) ... [2020-11-30 00:20:26,200 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5abceca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 12:20:26, skipping insertion in model container [2020-11-30 00:20:26,200 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:20:25" (2/3) ... [2020-11-30 00:20:26,200 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5abceca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 12:20:26, skipping insertion in model container [2020-11-30 00:20:26,201 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 12:20:26" (3/3) ... [2020-11-30 00:20:26,202 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1250.c [2020-11-30 00:20:26,214 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-30 00:20:26,219 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-30 00:20:26,234 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-30 00:20:26,262 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-30 00:20:26,262 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-30 00:20:26,263 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-30 00:20:26,263 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-30 00:20:26,263 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-30 00:20:26,263 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-30 00:20:26,263 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-30 00:20:26,263 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-30 00:20:26,280 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states. [2020-11-30 00:20:26,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-30 00:20:26,287 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:20:26,288 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:20:26,288 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:20:26,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:20:26,296 INFO L82 PathProgramCache]: Analyzing trace with hash -958093107, now seen corresponding path program 1 times [2020-11-30 00:20:26,308 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:20:26,309 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1226471401] [2020-11-30 00:20:26,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:20:26,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:20:26,508 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:20:26,509 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1226471401] [2020-11-30 00:20:26,511 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:20:26,511 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-30 00:20:26,513 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1562100490] [2020-11-30 00:20:26,518 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-30 00:20:26,519 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:20:26,540 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-30 00:20:26,541 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-30 00:20:26,544 INFO L87 Difference]: Start difference. First operand 29 states. Second operand 2 states. [2020-11-30 00:20:26,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:20:26,571 INFO L93 Difference]: Finished difference Result 55 states and 85 transitions. [2020-11-30 00:20:26,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-30 00:20:26,573 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2020-11-30 00:20:26,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:20:26,583 INFO L225 Difference]: With dead ends: 55 [2020-11-30 00:20:26,583 INFO L226 Difference]: Without dead ends: 25 [2020-11-30 00:20:26,586 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 00:20:26,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2020-11-30 00:20:26,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2020-11-30 00:20:26,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2020-11-30 00:20:26,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 35 transitions. [2020-11-30 00:20:26,649 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 35 transitions. Word has length 10 [2020-11-30 00:20:26,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:20:26,649 INFO L481 AbstractCegarLoop]: Abstraction has 25 states and 35 transitions. [2020-11-30 00:20:26,649 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-30 00:20:26,650 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 35 transitions. [2020-11-30 00:20:26,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-30 00:20:26,650 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:20:26,651 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:20:26,651 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-30 00:20:26,651 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:20:26,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:20:26,655 INFO L82 PathProgramCache]: Analyzing trace with hash 1001566992, now seen corresponding path program 1 times [2020-11-30 00:20:26,655 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:20:26,656 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [257266367] [2020-11-30 00:20:26,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:20:26,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:20:26,855 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:20:26,856 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [257266367] [2020-11-30 00:20:26,856 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:20:26,856 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-30 00:20:26,857 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [371766567] [2020-11-30 00:20:26,859 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-30 00:20:26,859 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:20:26,860 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-30 00:20:26,861 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-30 00:20:26,861 INFO L87 Difference]: Start difference. First operand 25 states and 35 transitions. Second operand 4 states. [2020-11-30 00:20:27,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:20:27,039 INFO L93 Difference]: Finished difference Result 41 states and 52 transitions. [2020-11-30 00:20:27,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-30 00:20:27,041 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-11-30 00:20:27,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:20:27,043 INFO L225 Difference]: With dead ends: 41 [2020-11-30 00:20:27,043 INFO L226 Difference]: Without dead ends: 36 [2020-11-30 00:20:27,044 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 00:20:27,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-11-30 00:20:27,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 27. [2020-11-30 00:20:27,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-11-30 00:20:27,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 37 transitions. [2020-11-30 00:20:27,058 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 37 transitions. Word has length 11 [2020-11-30 00:20:27,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:20:27,059 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 37 transitions. [2020-11-30 00:20:27,059 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-30 00:20:27,059 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 37 transitions. [2020-11-30 00:20:27,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-30 00:20:27,060 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:20:27,060 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:20:27,060 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-30 00:20:27,061 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:20:27,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:20:27,062 INFO L82 PathProgramCache]: Analyzing trace with hash 502183504, now seen corresponding path program 1 times [2020-11-30 00:20:27,062 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:20:27,062 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1056588306] [2020-11-30 00:20:27,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:20:27,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:20:27,180 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 00:20:27,180 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1056588306] [2020-11-30 00:20:27,180 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:20:27,181 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-30 00:20:27,181 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [888534693] [2020-11-30 00:20:27,181 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-30 00:20:27,182 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:20:27,182 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-30 00:20:27,183 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-30 00:20:27,183 INFO L87 Difference]: Start difference. First operand 27 states and 37 transitions. Second operand 4 states. [2020-11-30 00:20:27,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:20:27,263 INFO L93 Difference]: Finished difference Result 43 states and 54 transitions. [2020-11-30 00:20:27,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-30 00:20:27,264 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-11-30 00:20:27,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:20:27,266 INFO L225 Difference]: With dead ends: 43 [2020-11-30 00:20:27,266 INFO L226 Difference]: Without dead ends: 38 [2020-11-30 00:20:27,267 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 00:20:27,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-11-30 00:20:27,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 27. [2020-11-30 00:20:27,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-11-30 00:20:27,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 37 transitions. [2020-11-30 00:20:27,274 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 37 transitions. Word has length 12 [2020-11-30 00:20:27,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:20:27,274 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 37 transitions. [2020-11-30 00:20:27,275 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-30 00:20:27,275 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 37 transitions. [2020-11-30 00:20:27,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-11-30 00:20:27,276 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:20:27,276 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:20:27,276 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-30 00:20:27,277 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:20:27,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:20:27,278 INFO L82 PathProgramCache]: Analyzing trace with hash -1951251627, now seen corresponding path program 1 times [2020-11-30 00:20:27,278 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:20:27,278 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1974168745] [2020-11-30 00:20:27,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:20:27,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:20:27,355 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 00:20:27,356 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1974168745] [2020-11-30 00:20:27,356 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:20:27,356 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-30 00:20:27,357 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2141063669] [2020-11-30 00:20:27,357 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-30 00:20:27,358 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:20:27,362 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-30 00:20:27,363 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-30 00:20:27,363 INFO L87 Difference]: Start difference. First operand 27 states and 37 transitions. Second operand 4 states. [2020-11-30 00:20:27,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:20:27,562 INFO L93 Difference]: Finished difference Result 45 states and 56 transitions. [2020-11-30 00:20:27,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-30 00:20:27,565 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-11-30 00:20:27,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:20:27,566 INFO L225 Difference]: With dead ends: 45 [2020-11-30 00:20:27,567 INFO L226 Difference]: Without dead ends: 40 [2020-11-30 00:20:27,567 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 00:20:27,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-11-30 00:20:27,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 27. [2020-11-30 00:20:27,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-11-30 00:20:27,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 37 transitions. [2020-11-30 00:20:27,574 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 37 transitions. Word has length 13 [2020-11-30 00:20:27,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:20:27,574 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 37 transitions. [2020-11-30 00:20:27,574 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-30 00:20:27,575 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 37 transitions. [2020-11-30 00:20:27,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-11-30 00:20:27,580 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:20:27,580 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:20:27,582 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-30 00:20:27,582 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:20:27,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:20:27,584 INFO L82 PathProgramCache]: Analyzing trace with hash -555778251, now seen corresponding path program 1 times [2020-11-30 00:20:27,584 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:20:27,585 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1489141950] [2020-11-30 00:20:27,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:20:27,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:20:27,697 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 00:20:27,697 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1489141950] [2020-11-30 00:20:27,698 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:20:27,698 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-30 00:20:27,698 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2048009112] [2020-11-30 00:20:27,699 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-30 00:20:27,699 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:20:27,700 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-30 00:20:27,700 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-30 00:20:27,700 INFO L87 Difference]: Start difference. First operand 27 states and 37 transitions. Second operand 4 states. [2020-11-30 00:20:27,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:20:27,796 INFO L93 Difference]: Finished difference Result 43 states and 54 transitions. [2020-11-30 00:20:27,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-30 00:20:27,797 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2020-11-30 00:20:27,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:20:27,798 INFO L225 Difference]: With dead ends: 43 [2020-11-30 00:20:27,798 INFO L226 Difference]: Without dead ends: 38 [2020-11-30 00:20:27,799 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 00:20:27,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-11-30 00:20:27,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 27. [2020-11-30 00:20:27,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-11-30 00:20:27,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 37 transitions. [2020-11-30 00:20:27,808 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 37 transitions. Word has length 14 [2020-11-30 00:20:27,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:20:27,809 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 37 transitions. [2020-11-30 00:20:27,809 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-30 00:20:27,809 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 37 transitions. [2020-11-30 00:20:27,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-11-30 00:20:27,810 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:20:27,810 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:20:27,811 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-30 00:20:27,811 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:20:27,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:20:27,812 INFO L82 PathProgramCache]: Analyzing trace with hash 1219229111, now seen corresponding path program 1 times [2020-11-30 00:20:27,812 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:20:27,813 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [880042531] [2020-11-30 00:20:27,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:20:27,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:20:27,858 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:20:27,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:20:27,909 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:20:27,968 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 00:20:27,968 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-30 00:20:27,969 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-30 00:20:28,036 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.11 12:20:28 BoogieIcfgContainer [2020-11-30 00:20:28,038 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-30 00:20:28,039 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-30 00:20:28,040 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-30 00:20:28,040 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-30 00:20:28,041 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 12:20:26" (3/4) ... [2020-11-30 00:20:28,046 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-11-30 00:20:28,046 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-30 00:20:28,051 INFO L168 Benchmark]: Toolchain (without parser) took 3254.17 ms. Allocated memory is still 98.6 MB. Free memory was 67.3 MB in the beginning and 66.9 MB in the end (delta: 366.2 kB). Peak memory consumption was 32.3 kB. Max. memory is 16.1 GB. [2020-11-30 00:20:28,052 INFO L168 Benchmark]: CDTParser took 1.22 ms. Allocated memory is still 81.8 MB. Free memory was 52.2 MB in the beginning and 52.2 MB in the end (delta: 21.3 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 00:20:28,053 INFO L168 Benchmark]: CACSL2BoogieTranslator took 412.80 ms. Allocated memory is still 98.6 MB. Free memory was 66.8 MB in the beginning and 75.9 MB in the end (delta: -9.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-30 00:20:28,054 INFO L168 Benchmark]: Boogie Procedure Inliner took 95.34 ms. Allocated memory is still 98.6 MB. Free memory was 75.9 MB in the beginning and 73.9 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 00:20:28,056 INFO L168 Benchmark]: Boogie Preprocessor took 72.69 ms. Allocated memory is still 98.6 MB. Free memory was 73.9 MB in the beginning and 72.5 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 00:20:28,056 INFO L168 Benchmark]: RCFGBuilder took 790.67 ms. Allocated memory is still 98.6 MB. Free memory was 72.5 MB in the beginning and 53.8 MB in the end (delta: 18.8 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. [2020-11-30 00:20:28,057 INFO L168 Benchmark]: TraceAbstraction took 1849.90 ms. Allocated memory is still 98.6 MB. Free memory was 53.3 MB in the beginning and 67.6 MB in the end (delta: -14.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 00:20:28,058 INFO L168 Benchmark]: Witness Printer took 6.78 ms. Allocated memory is still 98.6 MB. Free memory was 67.6 MB in the beginning and 66.9 MB in the end (delta: 618.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 00:20:28,064 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.22 ms. Allocated memory is still 81.8 MB. Free memory was 52.2 MB in the beginning and 52.2 MB in the end (delta: 21.3 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 412.80 ms. Allocated memory is still 98.6 MB. Free memory was 66.8 MB in the beginning and 75.9 MB in the end (delta: -9.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 95.34 ms. Allocated memory is still 98.6 MB. Free memory was 75.9 MB in the beginning and 73.9 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 72.69 ms. Allocated memory is still 98.6 MB. Free memory was 73.9 MB in the beginning and 72.5 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 790.67 ms. Allocated memory is still 98.6 MB. Free memory was 72.5 MB in the beginning and 53.8 MB in the end (delta: 18.8 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1849.90 ms. Allocated memory is still 98.6 MB. Free memory was 53.3 MB in the beginning and 67.6 MB in the end (delta: -14.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 6.78 ms. Allocated memory is still 98.6 MB. Free memory was 67.6 MB in the beginning and 66.9 MB in the end (delta: 618.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 3]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 18, overapproximation of someBinaryArithmeticDOUBLEoperation at line 69. Possible FailurePath: [L69] double x = 0.0 / 0.0; [L70] double y = 0.0 / 0.0; [L29] __uint32_t msw, lsw; [L32] ieee_double_shape_type ew_u; [L33] ew_u.value = (x) [L34] EXPR ew_u.parts.msw [L34] (msw) = ew_u.parts.msw [L35] EXPR ew_u.parts.lsw [L35] (lsw) = ew_u.parts.lsw [L38-L39] COND FALSE !((msw == 0x00000000 && lsw == 0x00000000) || (msw == 0x80000000 && lsw == 0x00000000)) [L41-L42] COND FALSE !((msw >= 0x00100000 && msw <= 0x7fefffff) || (msw >= 0x80100000 && msw <= 0xffefffff)) [L44-L45] COND FALSE !(( msw <= 0x000fffff) || (msw >= 0x80000000 && msw <= 0x800fffff)) [L48-L49] COND FALSE !((msw == 0x7ff00000 && lsw == 0x00000000) || (msw == 0xfff00000 && lsw == 0x00000000)) [L52] return 0; [L57] COND TRUE __fpclassify_double(x) == 0 [L58] return y; [L71] double res = fmax_double(x, y); [L18] return x != x; [L73] COND TRUE !isnan_double(res) [L3] __assert_fail("0", "double_req_bl_1250.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 29 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.7s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 206 SDtfs, 44 SDslu, 238 SDs, 0 SdLazy, 84 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s 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=29occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 44 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 74 NumberOfCodeBlocks, 74 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 55 ConstructedInterpolants, 0 QuantifiedInterpolants, 799 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.0-a4ecdab [2020-11-30 00:20:31,574 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-30 00:20:31,580 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-30 00:20:31,658 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-30 00:20:31,659 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-30 00:20:31,668 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-30 00:20:31,672 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-30 00:20:31,679 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-30 00:20:31,684 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-30 00:20:31,693 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-30 00:20:31,696 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-30 00:20:31,717 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-30 00:20:31,718 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-30 00:20:31,720 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-30 00:20:31,722 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-30 00:20:31,724 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-30 00:20:31,725 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-30 00:20:31,727 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-30 00:20:31,730 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-30 00:20:31,748 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-30 00:20:31,761 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-30 00:20:31,764 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-30 00:20:31,766 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-30 00:20:31,768 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-30 00:20:31,772 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-30 00:20:31,773 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-30 00:20:31,774 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-30 00:20:31,784 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-30 00:20:31,786 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-30 00:20:31,788 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-30 00:20:31,788 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-30 00:20:31,790 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-30 00:20:31,793 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-30 00:20:31,794 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-30 00:20:31,796 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-30 00:20:31,796 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-30 00:20:31,798 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-30 00:20:31,798 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-30 00:20:31,799 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-30 00:20:31,802 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-30 00:20:31,804 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-30 00:20:31,805 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_1c64f8d8-b14a-4945-996e-e2ae21a31bae/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2020-11-30 00:20:31,869 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-30 00:20:31,870 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-30 00:20:31,874 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-30 00:20:31,875 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-30 00:20:31,876 INFO L138 SettingsManager]: * Use SBE=true [2020-11-30 00:20:31,876 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-30 00:20:31,876 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-30 00:20:31,877 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-30 00:20:31,877 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-30 00:20:31,877 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-30 00:20:31,879 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-30 00:20:31,879 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-30 00:20:31,880 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-11-30 00:20:31,880 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-11-30 00:20:31,880 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-30 00:20:31,881 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-30 00:20:31,881 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-30 00:20:31,881 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-30 00:20:31,882 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-30 00:20:31,882 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-30 00:20:31,883 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-30 00:20:31,883 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-30 00:20:31,883 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-30 00:20:31,884 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-30 00:20:31,884 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-30 00:20:31,885 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-30 00:20:31,885 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2020-11-30 00:20:31,885 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-11-30 00:20:31,886 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-30 00:20:31,886 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-30 00:20:31,886 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-30 00:20:31,887 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_1c64f8d8-b14a-4945-996e-e2ae21a31bae/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_1c64f8d8-b14a-4945-996e-e2ae21a31bae/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 216b013ad4da4eb5e85a87de58b407e30252b4c5 [2020-11-30 00:20:32,487 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-30 00:20:32,552 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-30 00:20:32,558 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-30 00:20:32,561 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-30 00:20:32,562 INFO L275 PluginConnector]: CDTParser initialized [2020-11-30 00:20:32,563 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_1c64f8d8-b14a-4945-996e-e2ae21a31bae/bin/uautomizer/../../sv-benchmarks/c/float-newlib/double_req_bl_1250.c [2020-11-30 00:20:32,671 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_1c64f8d8-b14a-4945-996e-e2ae21a31bae/bin/uautomizer/data/35f7cb570/c7651ed2bf094aca88d47b7f93b9f186/FLAG97beb8e94 [2020-11-30 00:20:33,375 INFO L306 CDTParser]: Found 1 translation units. [2020-11-30 00:20:33,375 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_1c64f8d8-b14a-4945-996e-e2ae21a31bae/sv-benchmarks/c/float-newlib/double_req_bl_1250.c [2020-11-30 00:20:33,384 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_1c64f8d8-b14a-4945-996e-e2ae21a31bae/bin/uautomizer/data/35f7cb570/c7651ed2bf094aca88d47b7f93b9f186/FLAG97beb8e94 [2020-11-30 00:20:33,728 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_1c64f8d8-b14a-4945-996e-e2ae21a31bae/bin/uautomizer/data/35f7cb570/c7651ed2bf094aca88d47b7f93b9f186 [2020-11-30 00:20:33,732 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-30 00:20:33,734 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-30 00:20:33,737 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-30 00:20:33,737 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-30 00:20:33,742 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-30 00:20:33,744 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 12:20:33" (1/1) ... [2020-11-30 00:20:33,748 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@56106128 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:20:33, skipping insertion in model container [2020-11-30 00:20:33,748 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 12:20:33" (1/1) ... [2020-11-30 00:20:33,758 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-30 00:20:33,782 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-30 00:20:34,013 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 00:20:34,048 INFO L203 MainTranslator]: Completed pre-run [2020-11-30 00:20:34,078 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 00:20:34,105 INFO L208 MainTranslator]: Completed translation [2020-11-30 00:20:34,105 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:20:34 WrapperNode [2020-11-30 00:20:34,106 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-30 00:20:34,107 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-30 00:20:34,107 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-30 00:20:34,108 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-30 00:20:34,118 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:20:34" (1/1) ... [2020-11-30 00:20:34,157 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:20:34" (1/1) ... [2020-11-30 00:20:34,208 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-30 00:20:34,209 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-30 00:20:34,210 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-30 00:20:34,210 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-30 00:20:34,233 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:20:34" (1/1) ... [2020-11-30 00:20:34,233 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:20:34" (1/1) ... [2020-11-30 00:20:34,246 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:20:34" (1/1) ... [2020-11-30 00:20:34,247 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:20:34" (1/1) ... [2020-11-30 00:20:34,269 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:20:34" (1/1) ... [2020-11-30 00:20:34,287 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:20:34" (1/1) ... [2020-11-30 00:20:34,293 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:20:34" (1/1) ... [2020-11-30 00:20:34,300 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-30 00:20:34,309 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-30 00:20:34,310 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-30 00:20:34,310 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-30 00:20:34,311 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:20:34" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1c64f8d8-b14a-4945-996e-e2ae21a31bae/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 00:20:34,413 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2020-11-30 00:20:34,414 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-11-30 00:20:34,414 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-30 00:20:34,414 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2020-11-30 00:20:34,415 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-30 00:20:34,415 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-30 00:20:34,416 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-30 00:20:35,407 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-30 00:20:35,407 INFO L298 CfgBuilder]: Removed 18 assume(true) statements. [2020-11-30 00:20:35,410 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 12:20:35 BoogieIcfgContainer [2020-11-30 00:20:35,411 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-30 00:20:35,413 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-30 00:20:35,414 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-30 00:20:35,418 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-30 00:20:35,419 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.11 12:20:33" (1/3) ... [2020-11-30 00:20:35,420 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6cce0d57 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 12:20:35, skipping insertion in model container [2020-11-30 00:20:35,421 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:20:34" (2/3) ... [2020-11-30 00:20:35,422 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6cce0d57 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 12:20:35, skipping insertion in model container [2020-11-30 00:20:35,422 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 12:20:35" (3/3) ... [2020-11-30 00:20:35,424 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1250.c [2020-11-30 00:20:35,442 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-30 00:20:35,449 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-30 00:20:35,467 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-30 00:20:35,500 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-30 00:20:35,500 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-30 00:20:35,501 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-30 00:20:35,501 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-30 00:20:35,501 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-30 00:20:35,501 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-30 00:20:35,502 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-30 00:20:35,502 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-30 00:20:35,520 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states. [2020-11-30 00:20:35,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-30 00:20:35,531 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:20:35,532 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:20:35,533 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:20:35,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:20:35,542 INFO L82 PathProgramCache]: Analyzing trace with hash -958093107, now seen corresponding path program 1 times [2020-11-30 00:20:35,560 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-30 00:20:35,561 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1709401014] [2020-11-30 00:20:35,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1c64f8d8-b14a-4945-996e-e2ae21a31bae/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 00:20:35,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:20:35,810 INFO L263 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 1 conjunts are in the unsatisfiable core [2020-11-30 00:20:35,817 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:20:35,841 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 00:20:35,841 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 00:20:35,847 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 00:20:35,849 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1709401014] [2020-11-30 00:20:35,850 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:20:35,850 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-11-30 00:20:35,851 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [802093629] [2020-11-30 00:20:35,857 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-30 00:20:35,858 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-30 00:20:35,878 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-30 00:20:35,879 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-30 00:20:35,882 INFO L87 Difference]: Start difference. First operand 29 states. Second operand 2 states. [2020-11-30 00:20:35,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:20:35,909 INFO L93 Difference]: Finished difference Result 55 states and 85 transitions. [2020-11-30 00:20:35,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-30 00:20:35,912 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2020-11-30 00:20:35,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:20:35,926 INFO L225 Difference]: With dead ends: 55 [2020-11-30 00:20:35,926 INFO L226 Difference]: Without dead ends: 25 [2020-11-30 00:20:35,931 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-30 00:20:35,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2020-11-30 00:20:35,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2020-11-30 00:20:35,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2020-11-30 00:20:35,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 35 transitions. [2020-11-30 00:20:35,985 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 35 transitions. Word has length 10 [2020-11-30 00:20:35,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:20:35,986 INFO L481 AbstractCegarLoop]: Abstraction has 25 states and 35 transitions. [2020-11-30 00:20:35,986 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-30 00:20:35,987 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 35 transitions. [2020-11-30 00:20:35,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-30 00:20:35,988 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:20:35,988 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:20:36,203 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-11-30 00:20:36,204 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:20:36,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:20:36,206 INFO L82 PathProgramCache]: Analyzing trace with hash 1001566992, now seen corresponding path program 1 times [2020-11-30 00:20:36,208 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-30 00:20:36,209 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2041967555] [2020-11-30 00:20:36,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1c64f8d8-b14a-4945-996e-e2ae21a31bae/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 00:20:36,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:20:36,390 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 3 conjunts are in the unsatisfiable core [2020-11-30 00:20:36,392 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:20:36,440 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 00:20:36,440 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 00:20:36,491 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:20:36,492 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2041967555] [2020-11-30 00:20:36,492 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:20:36,492 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2020-11-30 00:20:36,492 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [313508638] [2020-11-30 00:20:36,494 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-30 00:20:36,495 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-30 00:20:36,496 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-30 00:20:36,497 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-30 00:20:36,497 INFO L87 Difference]: Start difference. First operand 25 states and 35 transitions. Second operand 6 states. [2020-11-30 00:20:36,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:20:36,760 INFO L93 Difference]: Finished difference Result 52 states and 65 transitions. [2020-11-30 00:20:36,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-30 00:20:36,762 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 11 [2020-11-30 00:20:36,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:20:36,764 INFO L225 Difference]: With dead ends: 52 [2020-11-30 00:20:36,764 INFO L226 Difference]: Without dead ends: 47 [2020-11-30 00:20:36,765 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 16 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 00:20:36,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-11-30 00:20:36,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 27. [2020-11-30 00:20:36,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-11-30 00:20:36,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 37 transitions. [2020-11-30 00:20:36,772 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 37 transitions. Word has length 11 [2020-11-30 00:20:36,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:20:36,773 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 37 transitions. [2020-11-30 00:20:36,773 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-30 00:20:36,773 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 37 transitions. [2020-11-30 00:20:36,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-11-30 00:20:36,774 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:20:36,774 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:20:36,975 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-11-30 00:20:36,975 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:20:36,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:20:36,977 INFO L82 PathProgramCache]: Analyzing trace with hash 1219229111, now seen corresponding path program 1 times [2020-11-30 00:20:36,979 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-30 00:20:36,979 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [329642921] [2020-11-30 00:20:36,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1c64f8d8-b14a-4945-996e-e2ae21a31bae/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 00:20:37,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:20:37,160 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 10 conjunts are in the unsatisfiable core [2020-11-30 00:20:37,162 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:20:37,509 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 00:20:37,510 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 00:20:37,690 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 00:20:37,690 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [329642921] [2020-11-30 00:20:37,691 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:20:37,691 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 10 [2020-11-30 00:20:37,691 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [301205387] [2020-11-30 00:20:37,692 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-11-30 00:20:37,692 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-30 00:20:37,693 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-11-30 00:20:37,694 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-11-30 00:20:37,694 INFO L87 Difference]: Start difference. First operand 27 states and 37 transitions. Second operand 10 states. [2020-11-30 00:20:38,204 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 19 DAG size of output: 15 [2020-11-30 00:20:38,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:20:38,285 INFO L93 Difference]: Finished difference Result 36 states and 45 transitions. [2020-11-30 00:20:38,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-30 00:20:38,287 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 14 [2020-11-30 00:20:38,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:20:38,288 INFO L225 Difference]: With dead ends: 36 [2020-11-30 00:20:38,289 INFO L226 Difference]: Without dead ends: 27 [2020-11-30 00:20:38,290 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 2 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2020-11-30 00:20:38,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2020-11-30 00:20:38,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 25. [2020-11-30 00:20:38,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2020-11-30 00:20:38,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 33 transitions. [2020-11-30 00:20:38,297 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 33 transitions. Word has length 14 [2020-11-30 00:20:38,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:20:38,297 INFO L481 AbstractCegarLoop]: Abstraction has 25 states and 33 transitions. [2020-11-30 00:20:38,298 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-11-30 00:20:38,298 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 33 transitions. [2020-11-30 00:20:38,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-11-30 00:20:38,299 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:20:38,300 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:20:38,516 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-11-30 00:20:38,516 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:20:38,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:20:38,517 INFO L82 PathProgramCache]: Analyzing trace with hash 1012428811, now seen corresponding path program 1 times [2020-11-30 00:20:38,518 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-30 00:20:38,519 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [43190547] [2020-11-30 00:20:38,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1c64f8d8-b14a-4945-996e-e2ae21a31bae/bin/uautomizer/mathsat Starting monitored process 5 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with mathsat -unsat_core_generation=3 [2020-11-30 00:20:38,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:20:38,768 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 3 conjunts are in the unsatisfiable core [2020-11-30 00:20:38,771 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:20:38,792 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 00:20:38,792 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 00:20:38,822 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 00:20:38,822 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [43190547] [2020-11-30 00:20:38,823 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:20:38,823 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2020-11-30 00:20:38,823 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1200837402] [2020-11-30 00:20:38,824 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-30 00:20:38,835 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-30 00:20:38,836 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-30 00:20:38,837 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-30 00:20:38,837 INFO L87 Difference]: Start difference. First operand 25 states and 33 transitions. Second operand 6 states. [2020-11-30 00:20:39,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:20:39,076 INFO L93 Difference]: Finished difference Result 52 states and 59 transitions. [2020-11-30 00:20:39,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-30 00:20:39,080 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 16 [2020-11-30 00:20:39,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:20:39,081 INFO L225 Difference]: With dead ends: 52 [2020-11-30 00:20:39,081 INFO L226 Difference]: Without dead ends: 47 [2020-11-30 00:20:39,082 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-11-30 00:20:39,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-11-30 00:20:39,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 27. [2020-11-30 00:20:39,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-11-30 00:20:39,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 35 transitions. [2020-11-30 00:20:39,093 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 35 transitions. Word has length 16 [2020-11-30 00:20:39,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:20:39,094 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 35 transitions. [2020-11-30 00:20:39,094 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-30 00:20:39,094 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 35 transitions. [2020-11-30 00:20:39,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-11-30 00:20:39,095 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:20:39,096 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:20:39,296 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2020-11-30 00:20:39,297 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:20:39,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:20:39,298 INFO L82 PathProgramCache]: Analyzing trace with hash -356841937, now seen corresponding path program 1 times [2020-11-30 00:20:39,299 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-30 00:20:39,299 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2064751382] [2020-11-30 00:20:39,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1c64f8d8-b14a-4945-996e-e2ae21a31bae/bin/uautomizer/mathsat Starting monitored process 6 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with mathsat -unsat_core_generation=3 [2020-11-30 00:20:39,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:20:39,537 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 11 conjunts are in the unsatisfiable core [2020-11-30 00:20:39,539 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:20:39,856 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 00:20:39,857 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 00:20:40,143 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 00:20:40,143 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2064751382] [2020-11-30 00:20:40,144 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:20:40,144 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 12 [2020-11-30 00:20:40,144 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1485890275] [2020-11-30 00:20:40,145 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-11-30 00:20:40,145 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-30 00:20:40,146 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-11-30 00:20:40,147 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2020-11-30 00:20:40,147 INFO L87 Difference]: Start difference. First operand 27 states and 35 transitions. Second operand 12 states. [2020-11-30 00:20:40,660 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 14 DAG size of output: 10 [2020-11-30 00:20:40,860 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 17 DAG size of output: 13 [2020-11-30 00:20:41,050 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 19 DAG size of output: 15 [2020-11-30 00:20:41,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:20:41,081 INFO L93 Difference]: Finished difference Result 32 states and 39 transitions. [2020-11-30 00:20:41,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-30 00:20:41,082 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 18 [2020-11-30 00:20:41,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:20:41,084 INFO L225 Difference]: With dead ends: 32 [2020-11-30 00:20:41,084 INFO L226 Difference]: Without dead ends: 23 [2020-11-30 00:20:41,085 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 3 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=62, Invalid=178, Unknown=0, NotChecked=0, Total=240 [2020-11-30 00:20:41,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-11-30 00:20:41,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2020-11-30 00:20:41,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-11-30 00:20:41,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 26 transitions. [2020-11-30 00:20:41,098 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 26 transitions. Word has length 18 [2020-11-30 00:20:41,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:20:41,100 INFO L481 AbstractCegarLoop]: Abstraction has 23 states and 26 transitions. [2020-11-30 00:20:41,100 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-11-30 00:20:41,101 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 26 transitions. [2020-11-30 00:20:41,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-11-30 00:20:41,103 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:20:41,103 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:20:41,319 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 mathsat -unsat_core_generation=3 [2020-11-30 00:20:41,320 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:20:41,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:20:41,321 INFO L82 PathProgramCache]: Analyzing trace with hash -208376157, now seen corresponding path program 1 times [2020-11-30 00:20:41,321 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-30 00:20:41,322 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1876291944] [2020-11-30 00:20:41,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1c64f8d8-b14a-4945-996e-e2ae21a31bae/bin/uautomizer/mathsat Starting monitored process 7 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with mathsat -unsat_core_generation=3 [2020-11-30 00:20:41,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:20:41,529 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 10 conjunts are in the unsatisfiable core [2020-11-30 00:20:41,531 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:20:41,651 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 00:20:41,651 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 00:20:41,848 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 00:20:41,848 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1876291944] [2020-11-30 00:20:41,848 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:20:41,849 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 10 [2020-11-30 00:20:41,849 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [670070121] [2020-11-30 00:20:41,850 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-11-30 00:20:41,850 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-30 00:20:41,851 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-11-30 00:20:41,851 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-11-30 00:20:41,851 INFO L87 Difference]: Start difference. First operand 23 states and 26 transitions. Second operand 10 states. [2020-11-30 00:20:42,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:20:42,273 INFO L93 Difference]: Finished difference Result 23 states and 26 transitions. [2020-11-30 00:20:42,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-30 00:20:42,273 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 19 [2020-11-30 00:20:42,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:20:42,274 INFO L225 Difference]: With dead ends: 23 [2020-11-30 00:20:42,274 INFO L226 Difference]: Without dead ends: 0 [2020-11-30 00:20:42,275 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 28 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 2 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2020-11-30 00:20:42,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-30 00:20:42,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-30 00:20:42,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-30 00:20:42,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-30 00:20:42,276 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 19 [2020-11-30 00:20:42,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:20:42,276 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-30 00:20:42,276 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-11-30 00:20:42,276 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-30 00:20:42,276 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-30 00:20:42,477 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 mathsat -unsat_core_generation=3 [2020-11-30 00:20:42,480 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-30 00:20:42,738 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 17 DAG size of output: 10 [2020-11-30 00:20:42,866 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 20 DAG size of output: 13 [2020-11-30 00:20:43,006 INFO L274 CegarLoopResult]: For program point L31-1(lines 31 36) no Hoare annotation was computed. [2020-11-30 00:20:43,007 INFO L270 CegarLoopResult]: At program point L31-2(lines 31 36) the Hoare annotation is: (and (not (fp.eq ULTIMATE.start_fmax_double_~y ULTIMATE.start_fmax_double_~y)) (not (fp.eq ULTIMATE.start_fmax_double_~x ULTIMATE.start_fmax_double_~x))) [2020-11-30 00:20:43,007 INFO L274 CegarLoopResult]: For program point L31-3(lines 28 53) no Hoare annotation was computed. [2020-11-30 00:20:43,007 INFO L274 CegarLoopResult]: For program point L31-5(lines 31 36) no Hoare annotation was computed. [2020-11-30 00:20:43,007 INFO L270 CegarLoopResult]: At program point L31-6(lines 31 36) the Hoare annotation is: (and (not (fp.eq ULTIMATE.start_fmax_double_~y ULTIMATE.start_fmax_double_~y)) (not (fp.eq ULTIMATE.start_fmax_double_~x ULTIMATE.start_fmax_double_~x))) [2020-11-30 00:20:43,007 INFO L274 CegarLoopResult]: For program point L31-7(lines 28 53) no Hoare annotation was computed. [2020-11-30 00:20:43,007 INFO L270 CegarLoopResult]: At program point L52(lines 28 53) the Hoare annotation is: (and (not (fp.eq ULTIMATE.start_fmax_double_~x ULTIMATE.start_fmax_double_~x)) (not (fp.eq ULTIMATE.start_fmax_double_~y ULTIMATE.start_fmax_double_~y))) [2020-11-30 00:20:43,008 INFO L270 CegarLoopResult]: At program point L52-1(lines 28 53) the Hoare annotation is: (let ((.cse0 (not (fp.eq ULTIMATE.start_fmax_double_~y ULTIMATE.start_fmax_double_~y)))) (or (and .cse0 (not (fp.eq ULTIMATE.start_fmax_double_~x ULTIMATE.start_fmax_double_~x))) (and .cse0 (not (= (_ bv0 32) |ULTIMATE.start___fpclassify_double_#res|))))) [2020-11-30 00:20:43,008 INFO L274 CegarLoopResult]: For program point L48(lines 48 52) no Hoare annotation was computed. [2020-11-30 00:20:43,008 INFO L274 CegarLoopResult]: For program point L48-1(lines 48 52) no Hoare annotation was computed. [2020-11-30 00:20:43,008 INFO L277 CegarLoopResult]: At program point L77(lines 65 78) the Hoare annotation is: true [2020-11-30 00:20:43,008 INFO L274 CegarLoopResult]: For program point L44(lines 44 52) no Hoare annotation was computed. [2020-11-30 00:20:43,008 INFO L274 CegarLoopResult]: For program point L44-1(lines 44 52) no Hoare annotation was computed. [2020-11-30 00:20:43,008 INFO L274 CegarLoopResult]: For program point L73(lines 73 76) no Hoare annotation was computed. [2020-11-30 00:20:43,009 INFO L274 CegarLoopResult]: For program point L3(line 3) no Hoare annotation was computed. [2020-11-30 00:20:43,009 INFO L274 CegarLoopResult]: For program point L3-1(line 3) no Hoare annotation was computed. [2020-11-30 00:20:43,009 INFO L274 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-11-30 00:20:43,009 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-11-30 00:20:43,009 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-11-30 00:20:43,009 INFO L274 CegarLoopResult]: For program point L57(lines 57 58) no Hoare annotation was computed. [2020-11-30 00:20:43,009 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 3) no Hoare annotation was computed. [2020-11-30 00:20:43,009 INFO L274 CegarLoopResult]: For program point L41(lines 41 52) no Hoare annotation was computed. [2020-11-30 00:20:43,010 INFO L274 CegarLoopResult]: For program point L41-1(lines 41 52) no Hoare annotation was computed. [2020-11-30 00:20:43,010 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-30 00:20:43,010 INFO L274 CegarLoopResult]: For program point L62(line 62) no Hoare annotation was computed. [2020-11-30 00:20:43,010 INFO L274 CegarLoopResult]: For program point L62-2(line 62) no Hoare annotation was computed. [2020-11-30 00:20:43,010 INFO L270 CegarLoopResult]: At program point L62-3(lines 55 63) the Hoare annotation is: (and (exists ((currentRoundingMode RoundingMode)) (= (fp.div currentRoundingMode (_ +zero 11 53) (_ +zero 11 53)) ULTIMATE.start_fmax_double_~y)) (not (fp.eq |ULTIMATE.start_fmax_double_#res| |ULTIMATE.start_fmax_double_#res|))) [2020-11-30 00:20:43,010 INFO L274 CegarLoopResult]: For program point L59(lines 59 60) no Hoare annotation was computed. [2020-11-30 00:20:43,010 INFO L270 CegarLoopResult]: At program point L18(line 18) the Hoare annotation is: (and (exists ((currentRoundingMode RoundingMode)) (= (fp.div currentRoundingMode (_ +zero 11 53) (_ +zero 11 53)) ULTIMATE.start_fmax_double_~y)) (not (fp.eq |ULTIMATE.start_fmax_double_#res| |ULTIMATE.start_fmax_double_#res|)) (= (_ bv1 32) |ULTIMATE.start_isnan_double_#res|)) [2020-11-30 00:20:43,021 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-11-30 00:20:43,030 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-11-30 00:20:43,035 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-11-30 00:20:43,037 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-11-30 00:20:43,044 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.11 12:20:43 BoogieIcfgContainer [2020-11-30 00:20:43,045 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-30 00:20:43,051 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-30 00:20:43,052 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-30 00:20:43,053 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-30 00:20:43,053 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 12:20:35" (3/4) ... [2020-11-30 00:20:43,057 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-30 00:20:43,077 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 15 nodes and edges [2020-11-30 00:20:43,077 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2020-11-30 00:20:43,078 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2020-11-30 00:20:43,078 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-30 00:20:43,113 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~DOUBLE(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == y) && !~fp.eq~DOUBLE(\result, \result) [2020-11-30 00:20:43,114 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~DOUBLE(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == y) && !~fp.eq~DOUBLE(\result, \result)) && 1bv32 == \result [2020-11-30 00:20:43,115 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (!~fp.eq~DOUBLE(y, y) && !~fp.eq~DOUBLE(x, x)) || (!~fp.eq~DOUBLE(y, y) && !(0bv32 == \result)) [2020-11-30 00:20:43,192 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_1c64f8d8-b14a-4945-996e-e2ae21a31bae/bin/uautomizer/witness.graphml [2020-11-30 00:20:43,193 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-30 00:20:43,194 INFO L168 Benchmark]: Toolchain (without parser) took 9460.34 ms. Allocated memory was 56.6 MB in the beginning and 83.9 MB in the end (delta: 27.3 MB). Free memory was 35.0 MB in the beginning and 64.2 MB in the end (delta: -29.2 MB). Peak memory consumption was 33.2 MB. Max. memory is 16.1 GB. [2020-11-30 00:20:43,195 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 56.6 MB. Free memory was 38.2 MB in the beginning and 38.2 MB in the end (delta: 73.6 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 00:20:43,195 INFO L168 Benchmark]: CACSL2BoogieTranslator took 369.51 ms. Allocated memory is still 56.6 MB. Free memory was 34.9 MB in the beginning and 23.9 MB in the end (delta: 11.0 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-11-30 00:20:43,196 INFO L168 Benchmark]: Boogie Procedure Inliner took 101.38 ms. Allocated memory is still 56.6 MB. Free memory was 23.9 MB in the beginning and 39.4 MB in the end (delta: -15.5 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-30 00:20:43,196 INFO L168 Benchmark]: Boogie Preprocessor took 99.11 ms. Allocated memory is still 56.6 MB. Free memory was 39.4 MB in the beginning and 37.9 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 00:20:43,197 INFO L168 Benchmark]: RCFGBuilder took 1101.53 ms. Allocated memory is still 56.6 MB. Free memory was 37.9 MB in the beginning and 33.3 MB in the end (delta: 4.5 MB). Peak memory consumption was 18.3 MB. Max. memory is 16.1 GB. [2020-11-30 00:20:43,198 INFO L168 Benchmark]: TraceAbstraction took 7631.66 ms. Allocated memory was 56.6 MB in the beginning and 83.9 MB in the end (delta: 27.3 MB). Free memory was 33.0 MB in the beginning and 34.1 MB in the end (delta: -1.1 MB). Peak memory consumption was 26.3 MB. Max. memory is 16.1 GB. [2020-11-30 00:20:43,198 INFO L168 Benchmark]: Witness Printer took 141.60 ms. Allocated memory is still 83.9 MB. Free memory was 34.1 MB in the beginning and 64.2 MB in the end (delta: -30.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-30 00:20:43,201 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 56.6 MB. Free memory was 38.2 MB in the beginning and 38.2 MB in the end (delta: 73.6 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 369.51 ms. Allocated memory is still 56.6 MB. Free memory was 34.9 MB in the beginning and 23.9 MB in the end (delta: 11.0 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 101.38 ms. Allocated memory is still 56.6 MB. Free memory was 23.9 MB in the beginning and 39.4 MB in the end (delta: -15.5 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 99.11 ms. Allocated memory is still 56.6 MB. Free memory was 39.4 MB in the beginning and 37.9 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 1101.53 ms. Allocated memory is still 56.6 MB. Free memory was 37.9 MB in the beginning and 33.3 MB in the end (delta: 4.5 MB). Peak memory consumption was 18.3 MB. Max. memory is 16.1 GB. * TraceAbstraction took 7631.66 ms. Allocated memory was 56.6 MB in the beginning and 83.9 MB in the end (delta: 27.3 MB). Free memory was 33.0 MB in the beginning and 34.1 MB in the end (delta: -1.1 MB). Peak memory consumption was 26.3 MB. Max. memory is 16.1 GB. * Witness Printer took 141.60 ms. Allocated memory is still 83.9 MB. Free memory was 34.1 MB in the beginning and 64.2 MB in the end (delta: -30.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 3]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 55]: Loop Invariant [2020-11-30 00:20:43,216 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-11-30 00:20:43,217 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] Derived loop invariant: (\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~DOUBLE(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == y) && !~fp.eq~DOUBLE(\result, \result) - InvariantResult [Line: 18]: Loop Invariant [2020-11-30 00:20:43,217 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-11-30 00:20:43,218 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] Derived loop invariant: ((\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~DOUBLE(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == y) && !~fp.eq~DOUBLE(\result, \result)) && 1bv32 == \result - InvariantResult [Line: 65]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 31]: Loop Invariant Derived loop invariant: !~fp.eq~DOUBLE(y, y) && !~fp.eq~DOUBLE(x, x) - InvariantResult [Line: 28]: Loop Invariant Derived loop invariant: (!~fp.eq~DOUBLE(y, y) && !~fp.eq~DOUBLE(x, x)) || (!~fp.eq~DOUBLE(y, y) && !(0bv32 == \result)) - InvariantResult [Line: 31]: Loop Invariant Derived loop invariant: !~fp.eq~DOUBLE(y, y) && !~fp.eq~DOUBLE(x, x) - InvariantResult [Line: 28]: Loop Invariant Derived loop invariant: !~fp.eq~DOUBLE(x, x) && !~fp.eq~DOUBLE(y, y) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 29 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 6.9s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 2.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.5s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 182 SDtfs, 117 SDslu, 549 SDs, 0 SdLazy, 138 SolverSat, 19 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 181 GetRequests, 130 SyntacticMatches, 3 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 7 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 2.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=29occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 6 MinimizatonAttempts, 42 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 7 PreInvPairs, 19 NumberOfFragments, 74 HoareAnnotationTreeSize, 7 FomulaSimplifications, 184 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 7 FomulaSimplificationsInter, 39 FormulaSimplificationTreeSizeReductionInter, 0.3s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 1.6s InterpolantComputationTime, 88 NumberOfCodeBlocks, 88 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 164 ConstructedInterpolants, 36 QuantifiedInterpolants, 8416 SizeOfPredicates, 32 NumberOfNonLiveVariables, 399 ConjunctsInSsa, 38 ConjunctsInUnsatCore, 12 InterpolantComputations, 12 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...