./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/double_req_bl_1252b.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_709a2709-e650-4822-bd96-a2e6d5d966de/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_709a2709-e650-4822-bd96-a2e6d5d966de/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_709a2709-e650-4822-bd96-a2e6d5d966de/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_709a2709-e650-4822-bd96-a2e6d5d966de/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_1252b.c -s /tmp/vcloud-vcloud-master/worker/run_dir_709a2709-e650-4822-bd96-a2e6d5d966de/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_709a2709-e650-4822-bd96-a2e6d5d966de/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 a6231fe9945ed231781bef28be0893007c672b08 ....................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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_709a2709-e650-4822-bd96-a2e6d5d966de/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_709a2709-e650-4822-bd96-a2e6d5d966de/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_709a2709-e650-4822-bd96-a2e6d5d966de/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_709a2709-e650-4822-bd96-a2e6d5d966de/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_1252b.c -s /tmp/vcloud-vcloud-master/worker/run_dir_709a2709-e650-4822-bd96-a2e6d5d966de/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_709a2709-e650-4822-bd96-a2e6d5d966de/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 a6231fe9945ed231781bef28be0893007c672b08 ....................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-30 00:04:15,387 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-30 00:04:15,390 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-30 00:04:15,480 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-30 00:04:15,481 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-30 00:04:15,489 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-30 00:04:15,492 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-30 00:04:15,509 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-30 00:04:15,513 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-30 00:04:15,515 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-30 00:04:15,517 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-30 00:04:15,520 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-30 00:04:15,520 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-30 00:04:15,530 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-30 00:04:15,533 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-30 00:04:15,537 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-30 00:04:15,539 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-30 00:04:15,547 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-30 00:04:15,550 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-30 00:04:15,555 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-30 00:04:15,563 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-30 00:04:15,565 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-30 00:04:15,567 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-30 00:04:15,569 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-30 00:04:15,577 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-30 00:04:15,578 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-30 00:04:15,579 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-30 00:04:15,581 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-30 00:04:15,582 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-30 00:04:15,584 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-30 00:04:15,584 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-30 00:04:15,586 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-30 00:04:15,588 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-30 00:04:15,590 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-30 00:04:15,592 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-30 00:04:15,592 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-30 00:04:15,593 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-30 00:04:15,593 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-30 00:04:15,594 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-30 00:04:15,595 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-30 00:04:15,597 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-30 00:04:15,601 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_709a2709-e650-4822-bd96-a2e6d5d966de/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-30 00:04:15,645 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-30 00:04:15,645 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-30 00:04:15,647 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-30 00:04:15,647 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-30 00:04:15,648 INFO L138 SettingsManager]: * Use SBE=true [2020-11-30 00:04:15,648 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-30 00:04:15,648 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-30 00:04:15,649 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-30 00:04:15,649 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-30 00:04:15,649 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-30 00:04:15,649 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-30 00:04:15,650 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-30 00:04:15,650 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-30 00:04:15,650 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-30 00:04:15,651 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-30 00:04:15,651 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-30 00:04:15,651 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-30 00:04:15,652 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-30 00:04:15,652 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-30 00:04:15,652 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-30 00:04:15,652 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-30 00:04:15,653 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-30 00:04:15,653 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-30 00:04:15,653 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-30 00:04:15,654 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-30 00:04:15,654 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-30 00:04:15,654 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-30 00:04:15,654 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-30 00:04:15,655 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-30 00:04:15,655 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_709a2709-e650-4822-bd96-a2e6d5d966de/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_709a2709-e650-4822-bd96-a2e6d5d966de/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a6231fe9945ed231781bef28be0893007c672b08 [2020-11-30 00:04:15,939 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-30 00:04:15,973 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-30 00:04:15,977 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-30 00:04:15,980 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-30 00:04:15,982 INFO L275 PluginConnector]: CDTParser initialized [2020-11-30 00:04:15,983 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_709a2709-e650-4822-bd96-a2e6d5d966de/bin/uautomizer/../../sv-benchmarks/c/float-newlib/double_req_bl_1252b.c [2020-11-30 00:04:16,072 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_709a2709-e650-4822-bd96-a2e6d5d966de/bin/uautomizer/data/65187a07d/a403d0f9f83949c293dcee0c725b5808/FLAGdf63bb57b [2020-11-30 00:04:16,634 INFO L306 CDTParser]: Found 1 translation units. [2020-11-30 00:04:16,639 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_709a2709-e650-4822-bd96-a2e6d5d966de/sv-benchmarks/c/float-newlib/double_req_bl_1252b.c [2020-11-30 00:04:16,652 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_709a2709-e650-4822-bd96-a2e6d5d966de/bin/uautomizer/data/65187a07d/a403d0f9f83949c293dcee0c725b5808/FLAGdf63bb57b [2020-11-30 00:04:16,947 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_709a2709-e650-4822-bd96-a2e6d5d966de/bin/uautomizer/data/65187a07d/a403d0f9f83949c293dcee0c725b5808 [2020-11-30 00:04:16,950 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-30 00:04:16,952 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-30 00:04:16,954 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-30 00:04:16,954 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-30 00:04:16,958 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-30 00:04:16,960 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 12:04:16" (1/1) ... [2020-11-30 00:04:16,962 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@638cbe83 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:04:16, skipping insertion in model container [2020-11-30 00:04:16,963 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 12:04:16" (1/1) ... [2020-11-30 00:04:16,973 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-30 00:04:16,993 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-30 00:04:17,278 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 00:04:17,299 INFO L203 MainTranslator]: Completed pre-run [2020-11-30 00:04:17,359 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 00:04:17,379 INFO L208 MainTranslator]: Completed translation [2020-11-30 00:04:17,380 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:04:17 WrapperNode [2020-11-30 00:04:17,380 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-30 00:04:17,381 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-30 00:04:17,382 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-30 00:04:17,382 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-30 00:04:17,391 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:04:17" (1/1) ... [2020-11-30 00:04:17,400 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:04:17" (1/1) ... [2020-11-30 00:04:17,426 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-30 00:04:17,428 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-30 00:04:17,429 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-30 00:04:17,429 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-30 00:04:17,435 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:04:17" (1/1) ... [2020-11-30 00:04:17,435 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:04:17" (1/1) ... [2020-11-30 00:04:17,438 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:04:17" (1/1) ... [2020-11-30 00:04:17,438 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:04:17" (1/1) ... [2020-11-30 00:04:17,446 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:04:17" (1/1) ... [2020-11-30 00:04:17,451 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:04:17" (1/1) ... [2020-11-30 00:04:17,453 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:04:17" (1/1) ... [2020-11-30 00:04:17,456 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-30 00:04:17,457 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-30 00:04:17,457 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-30 00:04:17,457 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-30 00:04:17,458 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:04:17" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_709a2709-e650-4822-bd96-a2e6d5d966de/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 00:04:17,525 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-30 00:04:17,525 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-30 00:04:17,525 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-11-30 00:04:17,525 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-30 00:04:17,525 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-30 00:04:17,525 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-30 00:04:17,525 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-30 00:04:18,162 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-30 00:04:18,163 INFO L298 CfgBuilder]: Removed 20 assume(true) statements. [2020-11-30 00:04:18,165 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 12:04:18 BoogieIcfgContainer [2020-11-30 00:04:18,165 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-30 00:04:18,167 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-30 00:04:18,167 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-30 00:04:18,171 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-30 00:04:18,172 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.11 12:04:16" (1/3) ... [2020-11-30 00:04:18,173 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@379225e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 12:04:18, skipping insertion in model container [2020-11-30 00:04:18,173 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:04:17" (2/3) ... [2020-11-30 00:04:18,173 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@379225e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 12:04:18, skipping insertion in model container [2020-11-30 00:04:18,174 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 12:04:18" (3/3) ... [2020-11-30 00:04:18,175 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1252b.c [2020-11-30 00:04:18,188 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-30 00:04:18,193 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-30 00:04:18,208 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-30 00:04:18,236 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-30 00:04:18,236 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-30 00:04:18,237 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-30 00:04:18,237 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-30 00:04:18,237 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-30 00:04:18,237 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-30 00:04:18,237 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-30 00:04:18,237 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-30 00:04:18,251 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states. [2020-11-30 00:04:18,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-30 00:04:18,258 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:04:18,258 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:04:18,259 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:04:18,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:04:18,266 INFO L82 PathProgramCache]: Analyzing trace with hash -958075201, now seen corresponding path program 1 times [2020-11-30 00:04:18,277 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:04:18,277 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1570867837] [2020-11-30 00:04:18,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:04:18,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:04:18,444 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 00:04:18,445 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1570867837] [2020-11-30 00:04:18,446 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:04:18,446 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-30 00:04:18,447 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [333073514] [2020-11-30 00:04:18,452 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-30 00:04:18,452 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:04:18,465 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-30 00:04:18,465 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-30 00:04:18,468 INFO L87 Difference]: Start difference. First operand 33 states. Second operand 2 states. [2020-11-30 00:04:18,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:04:18,486 INFO L93 Difference]: Finished difference Result 63 states and 99 transitions. [2020-11-30 00:04:18,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-30 00:04:18,487 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2020-11-30 00:04:18,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:04:18,498 INFO L225 Difference]: With dead ends: 63 [2020-11-30 00:04:18,499 INFO L226 Difference]: Without dead ends: 29 [2020-11-30 00:04:18,502 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 00:04:18,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-11-30 00:04:18,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2020-11-30 00:04:18,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-11-30 00:04:18,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 40 transitions. [2020-11-30 00:04:18,542 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 40 transitions. Word has length 10 [2020-11-30 00:04:18,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:04:18,542 INFO L481 AbstractCegarLoop]: Abstraction has 29 states and 40 transitions. [2020-11-30 00:04:18,543 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-30 00:04:18,543 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 40 transitions. [2020-11-30 00:04:18,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-30 00:04:18,544 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:04:18,544 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:04:18,544 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-30 00:04:18,545 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:04:18,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:04:18,546 INFO L82 PathProgramCache]: Analyzing trace with hash 1001584898, now seen corresponding path program 1 times [2020-11-30 00:04:18,546 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:04:18,546 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1703292689] [2020-11-30 00:04:18,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:04:18,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:04:18,660 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 00:04:18,660 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1703292689] [2020-11-30 00:04:18,660 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:04:18,661 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-30 00:04:18,661 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [761261766] [2020-11-30 00:04:18,662 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-30 00:04:18,662 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:04:18,664 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-30 00:04:18,664 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-30 00:04:18,664 INFO L87 Difference]: Start difference. First operand 29 states and 40 transitions. Second operand 4 states. [2020-11-30 00:04:18,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:04:18,767 INFO L93 Difference]: Finished difference Result 53 states and 67 transitions. [2020-11-30 00:04:18,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-30 00:04:18,769 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-11-30 00:04:18,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:04:18,770 INFO L225 Difference]: With dead ends: 53 [2020-11-30 00:04:18,770 INFO L226 Difference]: Without dead ends: 44 [2020-11-30 00:04:18,772 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 00:04:18,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-11-30 00:04:18,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 31. [2020-11-30 00:04:18,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-11-30 00:04:18,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 42 transitions. [2020-11-30 00:04:18,790 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 42 transitions. Word has length 11 [2020-11-30 00:04:18,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:04:18,791 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 42 transitions. [2020-11-30 00:04:18,791 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-30 00:04:18,791 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 42 transitions. [2020-11-30 00:04:18,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-30 00:04:18,794 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:04:18,794 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:04:18,795 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-30 00:04:18,796 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:04:18,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:04:18,800 INFO L82 PathProgramCache]: Analyzing trace with hash 502201410, now seen corresponding path program 1 times [2020-11-30 00:04:18,800 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:04:18,800 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [208175920] [2020-11-30 00:04:18,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:04:18,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:04:18,889 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 00:04:18,889 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [208175920] [2020-11-30 00:04:18,890 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:04:18,890 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-30 00:04:18,890 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1319470875] [2020-11-30 00:04:18,891 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-30 00:04:18,891 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:04:18,892 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-30 00:04:18,892 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-30 00:04:18,892 INFO L87 Difference]: Start difference. First operand 31 states and 42 transitions. Second operand 4 states. [2020-11-30 00:04:18,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:04:18,980 INFO L93 Difference]: Finished difference Result 55 states and 69 transitions. [2020-11-30 00:04:18,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-30 00:04:18,981 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-11-30 00:04:18,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:04:18,983 INFO L225 Difference]: With dead ends: 55 [2020-11-30 00:04:18,983 INFO L226 Difference]: Without dead ends: 46 [2020-11-30 00:04:18,984 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 00:04:18,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-11-30 00:04:18,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 31. [2020-11-30 00:04:18,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-11-30 00:04:18,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 42 transitions. [2020-11-30 00:04:18,991 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 42 transitions. Word has length 12 [2020-11-30 00:04:18,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:04:18,991 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 42 transitions. [2020-11-30 00:04:18,991 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-30 00:04:18,991 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 42 transitions. [2020-11-30 00:04:18,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-11-30 00:04:18,992 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:04:18,993 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:04:18,993 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-30 00:04:18,993 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:04:18,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:04:18,994 INFO L82 PathProgramCache]: Analyzing trace with hash -1951233721, now seen corresponding path program 1 times [2020-11-30 00:04:18,994 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:04:18,994 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [636271512] [2020-11-30 00:04:18,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:04:19,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:04:19,120 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 00:04:19,121 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [636271512] [2020-11-30 00:04:19,121 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:04:19,121 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-30 00:04:19,122 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [258690146] [2020-11-30 00:04:19,122 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-30 00:04:19,122 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:04:19,123 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-30 00:04:19,123 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-30 00:04:19,124 INFO L87 Difference]: Start difference. First operand 31 states and 42 transitions. Second operand 4 states. [2020-11-30 00:04:19,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:04:19,229 INFO L93 Difference]: Finished difference Result 57 states and 71 transitions. [2020-11-30 00:04:19,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-30 00:04:19,238 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-11-30 00:04:19,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:04:19,239 INFO L225 Difference]: With dead ends: 57 [2020-11-30 00:04:19,239 INFO L226 Difference]: Without dead ends: 48 [2020-11-30 00:04:19,240 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 00:04:19,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-11-30 00:04:19,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 31. [2020-11-30 00:04:19,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-11-30 00:04:19,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 42 transitions. [2020-11-30 00:04:19,246 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 42 transitions. Word has length 13 [2020-11-30 00:04:19,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:04:19,247 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 42 transitions. [2020-11-30 00:04:19,247 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-30 00:04:19,247 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 42 transitions. [2020-11-30 00:04:19,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-11-30 00:04:19,248 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:04:19,248 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:04:19,249 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-30 00:04:19,249 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:04:19,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:04:19,253 INFO L82 PathProgramCache]: Analyzing trace with hash -555760345, now seen corresponding path program 1 times [2020-11-30 00:04:19,254 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:04:19,254 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [341072106] [2020-11-30 00:04:19,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:04:19,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:04:19,387 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 00:04:19,387 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [341072106] [2020-11-30 00:04:19,388 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:04:19,388 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-30 00:04:19,388 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1555697467] [2020-11-30 00:04:19,389 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-30 00:04:19,389 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:04:19,390 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-30 00:04:19,390 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-30 00:04:19,390 INFO L87 Difference]: Start difference. First operand 31 states and 42 transitions. Second operand 4 states. [2020-11-30 00:04:19,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:04:19,470 INFO L93 Difference]: Finished difference Result 55 states and 69 transitions. [2020-11-30 00:04:19,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-30 00:04:19,476 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2020-11-30 00:04:19,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:04:19,477 INFO L225 Difference]: With dead ends: 55 [2020-11-30 00:04:19,477 INFO L226 Difference]: Without dead ends: 46 [2020-11-30 00:04:19,478 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 00:04:19,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-11-30 00:04:19,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 31. [2020-11-30 00:04:19,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-11-30 00:04:19,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 42 transitions. [2020-11-30 00:04:19,484 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 42 transitions. Word has length 14 [2020-11-30 00:04:19,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:04:19,485 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 42 transitions. [2020-11-30 00:04:19,485 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-30 00:04:19,485 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 42 transitions. [2020-11-30 00:04:19,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-11-30 00:04:19,486 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:04:19,486 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:04:19,487 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-30 00:04:19,487 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:04:19,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:04:19,487 INFO L82 PathProgramCache]: Analyzing trace with hash 1219247017, now seen corresponding path program 1 times [2020-11-30 00:04:19,488 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:04:19,488 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1181624495] [2020-11-30 00:04:19,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:04:19,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:04:19,540 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:04:19,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:04:19,586 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:04:19,635 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 00:04:19,636 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-30 00:04:19,636 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-30 00:04:19,701 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.11 12:04:19 BoogieIcfgContainer [2020-11-30 00:04:19,701 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-30 00:04:19,703 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-30 00:04:19,704 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-30 00:04:19,704 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-30 00:04:19,705 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 12:04:18" (3/4) ... [2020-11-30 00:04:19,708 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-11-30 00:04:19,709 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-30 00:04:19,713 INFO L168 Benchmark]: Toolchain (without parser) took 2758.33 ms. Allocated memory was 104.9 MB in the beginning and 125.8 MB in the end (delta: 21.0 MB). Free memory was 72.9 MB in the beginning and 85.3 MB in the end (delta: -12.4 MB). Peak memory consumption was 8.6 MB. Max. memory is 16.1 GB. [2020-11-30 00:04:19,714 INFO L168 Benchmark]: CDTParser took 0.34 ms. Allocated memory is still 77.6 MB. Free memory was 37.6 MB in the beginning and 37.5 MB in the end (delta: 63.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 00:04:19,717 INFO L168 Benchmark]: CACSL2BoogieTranslator took 426.46 ms. Allocated memory is still 104.9 MB. Free memory was 72.9 MB in the beginning and 80.0 MB in the end (delta: -7.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-30 00:04:19,719 INFO L168 Benchmark]: Boogie Procedure Inliner took 46.37 ms. Allocated memory is still 104.9 MB. Free memory was 80.0 MB in the beginning and 78.3 MB in the end (delta: 1.8 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 00:04:19,727 INFO L168 Benchmark]: Boogie Preprocessor took 27.84 ms. Allocated memory is still 104.9 MB. Free memory was 78.3 MB in the beginning and 76.7 MB in the end (delta: 1.6 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-30 00:04:19,729 INFO L168 Benchmark]: RCFGBuilder took 708.24 ms. Allocated memory is still 104.9 MB. Free memory was 76.7 MB in the beginning and 56.1 MB in the end (delta: 20.6 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.1 GB. [2020-11-30 00:04:19,730 INFO L168 Benchmark]: TraceAbstraction took 1534.34 ms. Allocated memory was 104.9 MB in the beginning and 125.8 MB in the end (delta: 21.0 MB). Free memory was 55.7 MB in the beginning and 85.9 MB in the end (delta: -30.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 00:04:19,734 INFO L168 Benchmark]: Witness Printer took 5.60 ms. Allocated memory is still 125.8 MB. Free memory was 85.9 MB in the beginning and 85.3 MB in the end (delta: 595.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 00:04:19,740 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34 ms. Allocated memory is still 77.6 MB. Free memory was 37.6 MB in the beginning and 37.5 MB in the end (delta: 63.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 426.46 ms. Allocated memory is still 104.9 MB. Free memory was 72.9 MB in the beginning and 80.0 MB in the end (delta: -7.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 46.37 ms. Allocated memory is still 104.9 MB. Free memory was 80.0 MB in the beginning and 78.3 MB in the end (delta: 1.8 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 27.84 ms. Allocated memory is still 104.9 MB. Free memory was 78.3 MB in the beginning and 76.7 MB in the end (delta: 1.6 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 708.24 ms. Allocated memory is still 104.9 MB. Free memory was 76.7 MB in the beginning and 56.1 MB in the end (delta: 20.6 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1534.34 ms. Allocated memory was 104.9 MB in the beginning and 125.8 MB in the end (delta: 21.0 MB). Free memory was 55.7 MB in the beginning and 85.9 MB in the end (delta: -30.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 5.60 ms. Allocated memory is still 125.8 MB. Free memory was 85.9 MB in the beginning and 85.3 MB in the end (delta: 595.4 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 86, overapproximation of someUnaryDOUBLEoperation at line 82. Possible FailurePath: [L81] double x = 0.0; [L82] double y = -0.0; [L26] __uint32_t msw, lsw; [L29] ieee_double_shape_type ew_u; [L30] ew_u.value = (x) [L31] EXPR ew_u.parts.msw [L31] (msw) = ew_u.parts.msw [L32] EXPR ew_u.parts.lsw [L32] (lsw) = ew_u.parts.lsw [L35-L36] COND FALSE !((msw == 0x00000000 && lsw == 0x00000000) || (msw == 0x80000000 && lsw == 0x00000000)) [L38-L39] COND FALSE !((msw >= 0x00100000 && msw <= 0x7fefffff) || (msw >= 0x80100000 && msw <= 0xffefffff)) [L41-L42] COND FALSE !(( msw <= 0x000fffff) || (msw >= 0x80000000 && msw <= 0x800fffff)) [L45-L46] COND FALSE !((msw == 0x7ff00000 && lsw == 0x00000000) || (msw == 0xfff00000 && lsw == 0x00000000)) [L49] return 0; [L54] COND TRUE __fpclassify_double(x) == 0 [L55] return y; [L83] double res = fmax_double(x, y); [L86] EXPR res == 0.0 && __signbit_double(res) == 0 [L86] COND TRUE !(res == 0.0 && __signbit_double(res) == 0) [L3] __assert_fail("0", "double_req_bl_1252b.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 33 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.4s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 251 SDtfs, 64 SDslu, 298 SDs, 0 SdLazy, 84 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 22 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=33occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 60 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s 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 00:04:22,618 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-30 00:04:22,621 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-30 00:04:22,680 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-30 00:04:22,680 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-30 00:04:22,686 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-30 00:04:22,690 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-30 00:04:22,696 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-30 00:04:22,700 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-30 00:04:22,707 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-30 00:04:22,709 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-30 00:04:22,728 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-30 00:04:22,728 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-30 00:04:22,732 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-30 00:04:22,734 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-30 00:04:22,736 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-30 00:04:22,738 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-30 00:04:22,739 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-30 00:04:22,747 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-30 00:04:22,755 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-30 00:04:22,757 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-30 00:04:22,764 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-30 00:04:22,765 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-30 00:04:22,766 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-30 00:04:22,770 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-30 00:04:22,771 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-30 00:04:22,771 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-30 00:04:22,772 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-30 00:04:22,773 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-30 00:04:22,780 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-30 00:04:22,780 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-30 00:04:22,781 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-30 00:04:22,784 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-30 00:04:22,785 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-30 00:04:22,786 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-30 00:04:22,786 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-30 00:04:22,787 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-30 00:04:22,787 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-30 00:04:22,788 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-30 00:04:22,790 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-30 00:04:22,791 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-30 00:04:22,792 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_709a2709-e650-4822-bd96-a2e6d5d966de/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2020-11-30 00:04:22,842 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-30 00:04:22,843 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-30 00:04:22,846 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-30 00:04:22,846 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-30 00:04:22,847 INFO L138 SettingsManager]: * Use SBE=true [2020-11-30 00:04:22,847 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-30 00:04:22,847 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-30 00:04:22,847 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-30 00:04:22,848 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-30 00:04:22,848 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-30 00:04:22,849 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-30 00:04:22,849 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-30 00:04:22,849 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-11-30 00:04:22,850 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-11-30 00:04:22,850 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-30 00:04:22,850 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-30 00:04:22,850 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-30 00:04:22,850 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-30 00:04:22,851 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-30 00:04:22,851 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-30 00:04:22,851 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-30 00:04:22,851 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-30 00:04:22,852 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-30 00:04:22,852 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-30 00:04:22,852 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-30 00:04:22,852 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-30 00:04:22,852 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2020-11-30 00:04:22,853 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-11-30 00:04:22,853 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-30 00:04:22,853 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-30 00:04:22,853 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-30 00:04:22,853 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_709a2709-e650-4822-bd96-a2e6d5d966de/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_709a2709-e650-4822-bd96-a2e6d5d966de/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a6231fe9945ed231781bef28be0893007c672b08 [2020-11-30 00:04:23,290 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-30 00:04:23,324 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-30 00:04:23,327 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-30 00:04:23,328 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-30 00:04:23,329 INFO L275 PluginConnector]: CDTParser initialized [2020-11-30 00:04:23,330 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_709a2709-e650-4822-bd96-a2e6d5d966de/bin/uautomizer/../../sv-benchmarks/c/float-newlib/double_req_bl_1252b.c [2020-11-30 00:04:23,420 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_709a2709-e650-4822-bd96-a2e6d5d966de/bin/uautomizer/data/1bc44e96a/e81bc7cb6a9e4701844011d98f9764f9/FLAGe667ed547 [2020-11-30 00:04:24,057 INFO L306 CDTParser]: Found 1 translation units. [2020-11-30 00:04:24,062 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_709a2709-e650-4822-bd96-a2e6d5d966de/sv-benchmarks/c/float-newlib/double_req_bl_1252b.c [2020-11-30 00:04:24,072 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_709a2709-e650-4822-bd96-a2e6d5d966de/bin/uautomizer/data/1bc44e96a/e81bc7cb6a9e4701844011d98f9764f9/FLAGe667ed547 [2020-11-30 00:04:24,401 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_709a2709-e650-4822-bd96-a2e6d5d966de/bin/uautomizer/data/1bc44e96a/e81bc7cb6a9e4701844011d98f9764f9 [2020-11-30 00:04:24,404 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-30 00:04:24,407 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-30 00:04:24,412 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-30 00:04:24,413 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-30 00:04:24,418 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-30 00:04:24,420 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 12:04:24" (1/1) ... [2020-11-30 00:04:24,422 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@41a8eaf3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:04:24, skipping insertion in model container [2020-11-30 00:04:24,423 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 12:04:24" (1/1) ... [2020-11-30 00:04:24,433 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-30 00:04:24,458 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-30 00:04:24,665 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 00:04:24,682 INFO L203 MainTranslator]: Completed pre-run [2020-11-30 00:04:24,715 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 00:04:24,739 INFO L208 MainTranslator]: Completed translation [2020-11-30 00:04:24,740 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:04:24 WrapperNode [2020-11-30 00:04:24,740 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-30 00:04:24,742 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-30 00:04:24,742 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-30 00:04:24,743 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-30 00:04:24,752 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:04:24" (1/1) ... [2020-11-30 00:04:24,792 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:04:24" (1/1) ... [2020-11-30 00:04:24,853 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-30 00:04:24,854 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-30 00:04:24,854 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-30 00:04:24,854 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-30 00:04:24,863 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:04:24" (1/1) ... [2020-11-30 00:04:24,864 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:04:24" (1/1) ... [2020-11-30 00:04:24,869 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:04:24" (1/1) ... [2020-11-30 00:04:24,870 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:04:24" (1/1) ... [2020-11-30 00:04:24,879 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:04:24" (1/1) ... [2020-11-30 00:04:24,884 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:04:24" (1/1) ... [2020-11-30 00:04:24,887 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:04:24" (1/1) ... [2020-11-30 00:04:24,890 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-30 00:04:24,891 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-30 00:04:24,892 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-30 00:04:24,892 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-30 00:04:24,893 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:04:24" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_709a2709-e650-4822-bd96-a2e6d5d966de/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 00:04:24,964 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2020-11-30 00:04:24,967 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-11-30 00:04:24,967 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-30 00:04:24,967 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2020-11-30 00:04:24,967 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-30 00:04:24,968 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-30 00:04:24,968 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-30 00:04:25,871 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-30 00:04:25,871 INFO L298 CfgBuilder]: Removed 20 assume(true) statements. [2020-11-30 00:04:25,874 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 12:04:25 BoogieIcfgContainer [2020-11-30 00:04:25,874 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-30 00:04:25,876 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-30 00:04:25,877 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-30 00:04:25,881 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-30 00:04:25,881 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.11 12:04:24" (1/3) ... [2020-11-30 00:04:25,882 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f53ea50 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 12:04:25, skipping insertion in model container [2020-11-30 00:04:25,882 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:04:24" (2/3) ... [2020-11-30 00:04:25,883 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f53ea50 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 12:04:25, skipping insertion in model container [2020-11-30 00:04:25,883 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 12:04:25" (3/3) ... [2020-11-30 00:04:25,889 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1252b.c [2020-11-30 00:04:25,903 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-30 00:04:25,910 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-30 00:04:25,925 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-30 00:04:25,972 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-30 00:04:25,973 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-30 00:04:25,973 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-30 00:04:25,973 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-30 00:04:25,973 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-30 00:04:25,973 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-30 00:04:25,973 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-30 00:04:25,974 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-30 00:04:25,993 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states. [2020-11-30 00:04:26,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-30 00:04:26,000 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:04:26,001 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:04:26,002 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:04:26,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:04:26,007 INFO L82 PathProgramCache]: Analyzing trace with hash -958075201, now seen corresponding path program 1 times [2020-11-30 00:04:26,022 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-30 00:04:26,022 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1914535660] [2020-11-30 00:04:26,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_709a2709-e650-4822-bd96-a2e6d5d966de/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 00:04:26,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:04:26,142 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 1 conjunts are in the unsatisfiable core [2020-11-30 00:04:26,148 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:04:26,170 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 00:04:26,170 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 00:04:26,180 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 00:04:26,181 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1914535660] [2020-11-30 00:04:26,182 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:04:26,183 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-11-30 00:04:26,184 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1681836497] [2020-11-30 00:04:26,189 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-30 00:04:26,189 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-30 00:04:26,207 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-30 00:04:26,210 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-30 00:04:26,212 INFO L87 Difference]: Start difference. First operand 33 states. Second operand 2 states. [2020-11-30 00:04:26,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:04:26,251 INFO L93 Difference]: Finished difference Result 63 states and 99 transitions. [2020-11-30 00:04:26,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-30 00:04:26,252 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2020-11-30 00:04:26,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:04:26,270 INFO L225 Difference]: With dead ends: 63 [2020-11-30 00:04:26,270 INFO L226 Difference]: Without dead ends: 29 [2020-11-30 00:04:26,273 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 00:04:26,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-11-30 00:04:26,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2020-11-30 00:04:26,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-11-30 00:04:26,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 40 transitions. [2020-11-30 00:04:26,315 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 40 transitions. Word has length 10 [2020-11-30 00:04:26,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:04:26,315 INFO L481 AbstractCegarLoop]: Abstraction has 29 states and 40 transitions. [2020-11-30 00:04:26,315 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-30 00:04:26,315 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 40 transitions. [2020-11-30 00:04:26,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-30 00:04:26,316 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:04:26,317 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:04:26,533 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-11-30 00:04:26,534 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:04:26,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:04:26,537 INFO L82 PathProgramCache]: Analyzing trace with hash 1001584898, now seen corresponding path program 1 times [2020-11-30 00:04:26,541 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-30 00:04:26,542 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [880102930] [2020-11-30 00:04:26,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_709a2709-e650-4822-bd96-a2e6d5d966de/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 00:04:26,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:04:26,726 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 3 conjunts are in the unsatisfiable core [2020-11-30 00:04:26,728 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:04:26,763 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 00:04:26,763 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 00:04:26,792 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 00:04:26,793 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [880102930] [2020-11-30 00:04:26,793 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:04:26,793 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2020-11-30 00:04:26,793 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1654002974] [2020-11-30 00:04:26,795 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-30 00:04:26,799 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-30 00:04:26,801 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-30 00:04:26,801 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-30 00:04:26,802 INFO L87 Difference]: Start difference. First operand 29 states and 40 transitions. Second operand 6 states. [2020-11-30 00:04:26,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:04:26,980 INFO L93 Difference]: Finished difference Result 68 states and 85 transitions. [2020-11-30 00:04:26,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-30 00:04:26,983 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 11 [2020-11-30 00:04:26,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:04:26,985 INFO L225 Difference]: With dead ends: 68 [2020-11-30 00:04:26,987 INFO L226 Difference]: Without dead ends: 59 [2020-11-30 00:04:26,990 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-11-30 00:04:26,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2020-11-30 00:04:26,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 31. [2020-11-30 00:04:27,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-11-30 00:04:27,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 42 transitions. [2020-11-30 00:04:27,007 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 42 transitions. Word has length 11 [2020-11-30 00:04:27,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:04:27,008 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 42 transitions. [2020-11-30 00:04:27,008 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-30 00:04:27,009 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 42 transitions. [2020-11-30 00:04:27,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-11-30 00:04:27,013 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:04:27,015 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:04:27,221 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-11-30 00:04:27,222 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:04:27,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:04:27,222 INFO L82 PathProgramCache]: Analyzing trace with hash 1219247017, now seen corresponding path program 1 times [2020-11-30 00:04:27,223 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-30 00:04:27,223 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1970422043] [2020-11-30 00:04:27,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_709a2709-e650-4822-bd96-a2e6d5d966de/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 00:04:27,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:04:27,337 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 9 conjunts are in the unsatisfiable core [2020-11-30 00:04:27,339 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:04:27,527 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 00:04:27,527 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 00:04:27,637 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 00:04:27,637 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1970422043] [2020-11-30 00:04:27,637 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:04:27,637 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2020-11-30 00:04:27,638 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [275965305] [2020-11-30 00:04:27,638 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-30 00:04:27,638 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-30 00:04:27,639 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-30 00:04:27,640 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-30 00:04:27,640 INFO L87 Difference]: Start difference. First operand 31 states and 42 transitions. Second operand 6 states. [2020-11-30 00:04:27,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:04:27,835 INFO L93 Difference]: Finished difference Result 52 states and 69 transitions. [2020-11-30 00:04:27,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-30 00:04:27,836 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 14 [2020-11-30 00:04:27,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:04:27,837 INFO L225 Difference]: With dead ends: 52 [2020-11-30 00:04:27,837 INFO L226 Difference]: Without dead ends: 28 [2020-11-30 00:04:27,838 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-11-30 00:04:27,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-11-30 00:04:27,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2020-11-30 00:04:27,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-11-30 00:04:27,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 35 transitions. [2020-11-30 00:04:27,848 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 35 transitions. Word has length 14 [2020-11-30 00:04:27,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:04:27,848 INFO L481 AbstractCegarLoop]: Abstraction has 28 states and 35 transitions. [2020-11-30 00:04:27,849 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-30 00:04:27,849 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 35 transitions. [2020-11-30 00:04:27,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-11-30 00:04:27,851 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:04:27,852 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:04:28,072 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-11-30 00:04:28,073 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:04:28,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:04:28,073 INFO L82 PathProgramCache]: Analyzing trace with hash 1012446717, now seen corresponding path program 1 times [2020-11-30 00:04:28,074 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-30 00:04:28,074 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1299220828] [2020-11-30 00:04:28,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_709a2709-e650-4822-bd96-a2e6d5d966de/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 00:04:28,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:04:28,189 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 3 conjunts are in the unsatisfiable core [2020-11-30 00:04:28,191 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:04:28,221 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 00:04:28,221 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 00:04:28,258 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 00:04:28,258 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1299220828] [2020-11-30 00:04:28,258 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:04:28,259 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2020-11-30 00:04:28,259 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1314834206] [2020-11-30 00:04:28,259 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-30 00:04:28,260 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-30 00:04:28,260 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-30 00:04:28,261 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-30 00:04:28,261 INFO L87 Difference]: Start difference. First operand 28 states and 35 transitions. Second operand 6 states. [2020-11-30 00:04:28,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:04:28,440 INFO L93 Difference]: Finished difference Result 65 states and 76 transitions. [2020-11-30 00:04:28,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-30 00:04:28,450 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 16 [2020-11-30 00:04:28,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:04:28,451 INFO L225 Difference]: With dead ends: 65 [2020-11-30 00:04:28,451 INFO L226 Difference]: Without dead ends: 56 [2020-11-30 00:04:28,452 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 26 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 00:04:28,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-11-30 00:04:28,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 30. [2020-11-30 00:04:28,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-11-30 00:04:28,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 37 transitions. [2020-11-30 00:04:28,459 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 37 transitions. Word has length 16 [2020-11-30 00:04:28,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:04:28,460 INFO L481 AbstractCegarLoop]: Abstraction has 30 states and 37 transitions. [2020-11-30 00:04:28,460 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-30 00:04:28,460 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 37 transitions. [2020-11-30 00:04:28,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-11-30 00:04:28,461 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:04:28,473 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 00:04:28,696 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2020-11-30 00:04:28,697 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:04:28,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:04:28,697 INFO L82 PathProgramCache]: Analyzing trace with hash -414082333, now seen corresponding path program 1 times [2020-11-30 00:04:28,698 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-30 00:04:28,698 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [236115562] [2020-11-30 00:04:28,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_709a2709-e650-4822-bd96-a2e6d5d966de/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 00:04:28,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:04:28,842 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 7 conjunts are in the unsatisfiable core [2020-11-30 00:04:28,844 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:04:28,871 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 00:04:28,871 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 00:04:28,920 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 00:04:28,920 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [236115562] [2020-11-30 00:04:28,920 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:04:28,920 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2020-11-30 00:04:28,921 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [27328385] [2020-11-30 00:04:28,921 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-30 00:04:28,921 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-30 00:04:28,922 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-30 00:04:28,922 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-30 00:04:28,922 INFO L87 Difference]: Start difference. First operand 30 states and 37 transitions. Second operand 4 states. [2020-11-30 00:04:28,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:04:28,955 INFO L93 Difference]: Finished difference Result 40 states and 47 transitions. [2020-11-30 00:04:28,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 00:04:28,958 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 18 [2020-11-30 00:04:28,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:04:28,959 INFO L225 Difference]: With dead ends: 40 [2020-11-30 00:04:28,959 INFO L226 Difference]: Without dead ends: 30 [2020-11-30 00:04:28,960 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 30 SyntacticMatches, 2 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-30 00:04:28,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-11-30 00:04:28,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2020-11-30 00:04:28,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-11-30 00:04:28,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 36 transitions. [2020-11-30 00:04:28,972 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 36 transitions. Word has length 18 [2020-11-30 00:04:28,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:04:28,972 INFO L481 AbstractCegarLoop]: Abstraction has 30 states and 36 transitions. [2020-11-30 00:04:28,972 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-30 00:04:28,973 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 36 transitions. [2020-11-30 00:04:28,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-11-30 00:04:28,973 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:04:28,974 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 00:04:29,174 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 mathsat -unsat_core_generation=3 [2020-11-30 00:04:29,174 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:04:29,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:04:29,175 INFO L82 PathProgramCache]: Analyzing trace with hash -356824031, now seen corresponding path program 1 times [2020-11-30 00:04:29,176 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-30 00:04:29,176 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2126170904] [2020-11-30 00:04:29,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_709a2709-e650-4822-bd96-a2e6d5d966de/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 00:04:29,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:04:29,323 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 8 conjunts are in the unsatisfiable core [2020-11-30 00:04:29,325 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:04:29,390 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 00:04:29,390 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 00:04:29,450 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 00:04:29,450 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2126170904] [2020-11-30 00:04:29,450 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:04:29,451 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 9 [2020-11-30 00:04:29,451 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1684096725] [2020-11-30 00:04:29,451 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-11-30 00:04:29,451 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-30 00:04:29,452 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-11-30 00:04:29,452 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-11-30 00:04:29,453 INFO L87 Difference]: Start difference. First operand 30 states and 36 transitions. Second operand 9 states. [2020-11-30 00:04:29,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:04:29,617 INFO L93 Difference]: Finished difference Result 42 states and 47 transitions. [2020-11-30 00:04:29,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-30 00:04:29,618 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 18 [2020-11-30 00:04:29,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:04:29,620 INFO L225 Difference]: With dead ends: 42 [2020-11-30 00:04:29,620 INFO L226 Difference]: Without dead ends: 39 [2020-11-30 00:04:29,620 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 26 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2020-11-30 00:04:29,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2020-11-30 00:04:29,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 32. [2020-11-30 00:04:29,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-11-30 00:04:29,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 38 transitions. [2020-11-30 00:04:29,635 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 38 transitions. Word has length 18 [2020-11-30 00:04:29,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:04:29,635 INFO L481 AbstractCegarLoop]: Abstraction has 32 states and 38 transitions. [2020-11-30 00:04:29,636 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-11-30 00:04:29,636 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 38 transitions. [2020-11-30 00:04:29,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-11-30 00:04:29,638 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:04:29,638 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 00:04:29,852 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 mathsat -unsat_core_generation=3 [2020-11-30 00:04:29,853 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:04:29,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:04:29,853 INFO L82 PathProgramCache]: Analyzing trace with hash -208358251, now seen corresponding path program 1 times [2020-11-30 00:04:29,854 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-30 00:04:29,854 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1846286430] [2020-11-30 00:04:29,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_709a2709-e650-4822-bd96-a2e6d5d966de/bin/uautomizer/mathsat Starting monitored process 8 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with mathsat -unsat_core_generation=3 [2020-11-30 00:04:30,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:04:30,011 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 9 conjunts are in the unsatisfiable core [2020-11-30 00:04:30,014 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:04:30,082 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 00:04:30,082 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 00:04:30,113 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 00:04:30,288 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 00:04:30,289 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1846286430] [2020-11-30 00:04:30,289 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:04:30,289 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2020-11-30 00:04:30,289 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1675519342] [2020-11-30 00:04:30,290 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-30 00:04:30,290 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-30 00:04:30,291 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-30 00:04:30,291 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-11-30 00:04:30,291 INFO L87 Difference]: Start difference. First operand 32 states and 38 transitions. Second operand 8 states. [2020-11-30 00:04:30,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:04:30,506 INFO L93 Difference]: Finished difference Result 45 states and 50 transitions. [2020-11-30 00:04:30,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-30 00:04:30,508 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-11-30 00:04:30,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:04:30,509 INFO L225 Difference]: With dead ends: 45 [2020-11-30 00:04:30,509 INFO L226 Difference]: Without dead ends: 27 [2020-11-30 00:04:30,510 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2020-11-30 00:04:30,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2020-11-30 00:04:30,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2020-11-30 00:04:30,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-11-30 00:04:30,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 28 transitions. [2020-11-30 00:04:30,516 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 28 transitions. Word has length 19 [2020-11-30 00:04:30,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:04:30,516 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 28 transitions. [2020-11-30 00:04:30,516 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-11-30 00:04:30,516 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 28 transitions. [2020-11-30 00:04:30,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-11-30 00:04:30,517 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:04:30,518 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:04:30,718 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 mathsat -unsat_core_generation=3 [2020-11-30 00:04:30,718 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:04:30,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:04:30,719 INFO L82 PathProgramCache]: Analyzing trace with hash -1524231306, now seen corresponding path program 1 times [2020-11-30 00:04:30,719 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-30 00:04:30,719 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [709372330] [2020-11-30 00:04:30,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_709a2709-e650-4822-bd96-a2e6d5d966de/bin/uautomizer/mathsat Starting monitored process 9 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with mathsat -unsat_core_generation=3 [2020-11-30 00:04:31,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:04:31,041 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:04:31,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:04:31,352 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:04:31,438 INFO L173 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2020-11-30 00:04:31,438 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-30 00:04:31,639 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 mathsat -unsat_core_generation=3 [2020-11-30 00:04:31,686 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.11 12:04:31 BoogieIcfgContainer [2020-11-30 00:04:31,687 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-30 00:04:31,687 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-30 00:04:31,688 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-30 00:04:31,688 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-30 00:04:31,689 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 12:04:25" (3/4) ... [2020-11-30 00:04:31,691 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-11-30 00:04:31,776 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_709a2709-e650-4822-bd96-a2e6d5d966de/bin/uautomizer/witness.graphml [2020-11-30 00:04:31,780 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-30 00:04:31,783 INFO L168 Benchmark]: Toolchain (without parser) took 7374.75 ms. Allocated memory was 58.7 MB in the beginning and 94.4 MB in the end (delta: 35.7 MB). Free memory was 37.0 MB in the beginning and 48.7 MB in the end (delta: -11.6 MB). Peak memory consumption was 22.6 MB. Max. memory is 16.1 GB. [2020-11-30 00:04:31,784 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 58.7 MB. Free memory was 40.5 MB in the beginning and 40.5 MB in the end (delta: 25.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 00:04:31,785 INFO L168 Benchmark]: CACSL2BoogieTranslator took 328.63 ms. Allocated memory is still 58.7 MB. Free memory was 36.8 MB in the beginning and 25.7 MB in the end (delta: 11.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-30 00:04:31,790 INFO L168 Benchmark]: Boogie Procedure Inliner took 111.37 ms. Allocated memory is still 58.7 MB. Free memory was 25.7 MB in the beginning and 41.4 MB in the end (delta: -15.7 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-30 00:04:31,790 INFO L168 Benchmark]: Boogie Preprocessor took 36.49 ms. Allocated memory is still 58.7 MB. Free memory was 41.4 MB in the beginning and 39.8 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 00:04:31,794 INFO L168 Benchmark]: RCFGBuilder took 982.63 ms. Allocated memory was 58.7 MB in the beginning and 77.6 MB in the end (delta: 18.9 MB). Free memory was 39.8 MB in the beginning and 54.4 MB in the end (delta: -14.6 MB). Peak memory consumption was 20.4 MB. Max. memory is 16.1 GB. [2020-11-30 00:04:31,794 INFO L168 Benchmark]: TraceAbstraction took 5810.61 ms. Allocated memory was 77.6 MB in the beginning and 94.4 MB in the end (delta: 16.8 MB). Free memory was 54.1 MB in the beginning and 51.1 MB in the end (delta: 3.0 MB). Peak memory consumption was 19.9 MB. Max. memory is 16.1 GB. [2020-11-30 00:04:31,795 INFO L168 Benchmark]: Witness Printer took 93.38 ms. Allocated memory is still 94.4 MB. Free memory was 51.1 MB in the beginning and 48.7 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 00:04:31,798 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 ms. Allocated memory is still 58.7 MB. Free memory was 40.5 MB in the beginning and 40.5 MB in the end (delta: 25.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 328.63 ms. Allocated memory is still 58.7 MB. Free memory was 36.8 MB in the beginning and 25.7 MB in the end (delta: 11.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 111.37 ms. Allocated memory is still 58.7 MB. Free memory was 25.7 MB in the beginning and 41.4 MB in the end (delta: -15.7 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 36.49 ms. Allocated memory is still 58.7 MB. Free memory was 41.4 MB in the beginning and 39.8 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 982.63 ms. Allocated memory was 58.7 MB in the beginning and 77.6 MB in the end (delta: 18.9 MB). Free memory was 39.8 MB in the beginning and 54.4 MB in the end (delta: -14.6 MB). Peak memory consumption was 20.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 5810.61 ms. Allocated memory was 77.6 MB in the beginning and 94.4 MB in the end (delta: 16.8 MB). Free memory was 54.1 MB in the beginning and 51.1 MB in the end (delta: 3.0 MB). Peak memory consumption was 19.9 MB. Max. memory is 16.1 GB. * Witness Printer took 93.38 ms. Allocated memory is still 94.4 MB. Free memory was 51.1 MB in the beginning and 48.7 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 3]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L81] double x = 0.0; [L82] double y = -0.0; [L26] __uint32_t msw, lsw; [L29] ieee_double_shape_type ew_u; [L30] ew_u.value = (x) [L31] EXPR ew_u.parts.msw [L31] (msw) = ew_u.parts.msw [L32] EXPR ew_u.parts.lsw [L32] (lsw) = ew_u.parts.lsw [L35-L36] COND TRUE (msw == 0x00000000 && lsw == 0x00000000) || (msw == 0x80000000 && lsw == 0x00000000) [L37] return 2; [L54] COND FALSE !(__fpclassify_double(x) == 0) [L26] __uint32_t msw, lsw; [L29] ieee_double_shape_type ew_u; [L30] ew_u.value = (x) [L31] EXPR ew_u.parts.msw [L31] (msw) = ew_u.parts.msw [L32] EXPR ew_u.parts.lsw [L32] (lsw) = ew_u.parts.lsw [L35-L36] COND TRUE (msw == 0x00000000 && lsw == 0x00000000) || (msw == 0x80000000 && lsw == 0x00000000) [L37] return 2; [L56] COND FALSE !(__fpclassify_double(y) == 0) [L59] EXPR x > y ? x : y [L59] return x > y ? x : y; [L83] double res = fmax_double(x, y); [L86] EXPR res == 0.0 && __signbit_double(res) == 0 [L63] __uint32_t msw; [L66] ieee_double_shape_type gh_u; [L67] gh_u.value = (x) [L68] EXPR gh_u.parts.msw [L68] (msw) = gh_u.parts.msw [L71] return (msw & 0x80000000) != 0; [L86] EXPR res == 0.0 && __signbit_double(res) == 0 [L86] COND TRUE !(res == 0.0 && __signbit_double(res) == 0) [L3] __assert_fail("0", "double_req_bl_1252b.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 33 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 5.6s, OverallIterations: 8, TraceHistogramMax: 1, AutomataDifference: 1.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 234 SDtfs, 257 SDslu, 359 SDs, 0 SdLazy, 130 SolverSat, 20 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 209 GetRequests, 168 SyntacticMatches, 3 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=33occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 7 MinimizatonAttempts, 61 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 128 NumberOfCodeBlocks, 128 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 198 ConstructedInterpolants, 15 QuantifiedInterpolants, 12524 SizeOfPredicates, 27 NumberOfNonLiveVariables, 463 ConjunctsInSsa, 40 ConjunctsInUnsatCore, 14 InterpolantComputations, 14 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...