./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/double_req_bl_1232b.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_4bc898ad-bf1d-425c-a1aa-cb5100799c0e/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_4bc898ad-bf1d-425c-a1aa-cb5100799c0e/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_4bc898ad-bf1d-425c-a1aa-cb5100799c0e/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_4bc898ad-bf1d-425c-a1aa-cb5100799c0e/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_1232b.c -s /tmp/vcloud-vcloud-master/worker/run_dir_4bc898ad-bf1d-425c-a1aa-cb5100799c0e/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_4bc898ad-bf1d-425c-a1aa-cb5100799c0e/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 c8aa0f6d603c21abbc49650bbaaea4f693aff7f0 ....................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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_4bc898ad-bf1d-425c-a1aa-cb5100799c0e/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_4bc898ad-bf1d-425c-a1aa-cb5100799c0e/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_4bc898ad-bf1d-425c-a1aa-cb5100799c0e/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_4bc898ad-bf1d-425c-a1aa-cb5100799c0e/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_1232b.c -s /tmp/vcloud-vcloud-master/worker/run_dir_4bc898ad-bf1d-425c-a1aa-cb5100799c0e/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_4bc898ad-bf1d-425c-a1aa-cb5100799c0e/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 c8aa0f6d603c21abbc49650bbaaea4f693aff7f0 ....................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 00:12:12,330 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-30 00:12:12,333 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-30 00:12:12,435 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-30 00:12:12,436 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-30 00:12:12,442 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-30 00:12:12,446 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-30 00:12:12,454 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-30 00:12:12,458 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-30 00:12:12,464 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-30 00:12:12,466 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-30 00:12:12,469 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-30 00:12:12,469 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-30 00:12:12,474 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-30 00:12:12,476 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-30 00:12:12,478 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-30 00:12:12,479 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-30 00:12:12,484 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-30 00:12:12,488 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-30 00:12:12,498 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-30 00:12:12,501 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-30 00:12:12,505 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-30 00:12:12,508 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-30 00:12:12,511 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-30 00:12:12,522 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-30 00:12:12,523 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-30 00:12:12,523 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-30 00:12:12,526 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-30 00:12:12,527 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-30 00:12:12,528 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-30 00:12:12,529 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-30 00:12:12,530 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-30 00:12:12,533 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-30 00:12:12,535 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-30 00:12:12,536 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-30 00:12:12,537 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-30 00:12:12,538 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-30 00:12:12,538 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-30 00:12:12,539 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-30 00:12:12,540 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-30 00:12:12,541 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-30 00:12:12,544 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_4bc898ad-bf1d-425c-a1aa-cb5100799c0e/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-30 00:12:12,591 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-30 00:12:12,592 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-30 00:12:12,594 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-30 00:12:12,594 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-30 00:12:12,595 INFO L138 SettingsManager]: * Use SBE=true [2020-11-30 00:12:12,595 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-30 00:12:12,596 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-30 00:12:12,596 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-30 00:12:12,596 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-30 00:12:12,596 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-30 00:12:12,598 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-30 00:12:12,598 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-30 00:12:12,599 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-30 00:12:12,599 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-30 00:12:12,599 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-30 00:12:12,599 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-30 00:12:12,600 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-30 00:12:12,600 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-30 00:12:12,600 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-30 00:12:12,601 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-30 00:12:12,601 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-30 00:12:12,601 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-30 00:12:12,602 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-30 00:12:12,602 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-30 00:12:12,602 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-30 00:12:12,603 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-30 00:12:12,603 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-30 00:12:12,603 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-30 00:12:12,603 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-30 00:12:12,604 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_4bc898ad-bf1d-425c-a1aa-cb5100799c0e/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_4bc898ad-bf1d-425c-a1aa-cb5100799c0e/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c8aa0f6d603c21abbc49650bbaaea4f693aff7f0 [2020-11-30 00:12:12,918 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-30 00:12:12,951 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-30 00:12:12,955 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-30 00:12:12,957 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-30 00:12:12,958 INFO L275 PluginConnector]: CDTParser initialized [2020-11-30 00:12:12,959 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_4bc898ad-bf1d-425c-a1aa-cb5100799c0e/bin/uautomizer/../../sv-benchmarks/c/float-newlib/double_req_bl_1232b.c [2020-11-30 00:12:13,036 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_4bc898ad-bf1d-425c-a1aa-cb5100799c0e/bin/uautomizer/data/f5cc96ba3/1994edcdc04c4d99964b3b44166624e0/FLAG2254a0b46 [2020-11-30 00:12:13,693 INFO L306 CDTParser]: Found 1 translation units. [2020-11-30 00:12:13,694 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_4bc898ad-bf1d-425c-a1aa-cb5100799c0e/sv-benchmarks/c/float-newlib/double_req_bl_1232b.c [2020-11-30 00:12:13,703 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_4bc898ad-bf1d-425c-a1aa-cb5100799c0e/bin/uautomizer/data/f5cc96ba3/1994edcdc04c4d99964b3b44166624e0/FLAG2254a0b46 [2020-11-30 00:12:14,056 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_4bc898ad-bf1d-425c-a1aa-cb5100799c0e/bin/uautomizer/data/f5cc96ba3/1994edcdc04c4d99964b3b44166624e0 [2020-11-30 00:12:14,059 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-30 00:12:14,060 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-30 00:12:14,062 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-30 00:12:14,062 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-30 00:12:14,074 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-30 00:12:14,079 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 12:12:14" (1/1) ... [2020-11-30 00:12:14,081 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@395e9e8e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:12:14, skipping insertion in model container [2020-11-30 00:12:14,082 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 12:12:14" (1/1) ... [2020-11-30 00:12:14,089 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-30 00:12:14,105 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-30 00:12:14,328 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 00:12:14,337 INFO L203 MainTranslator]: Completed pre-run [2020-11-30 00:12:14,364 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 00:12:14,379 INFO L208 MainTranslator]: Completed translation [2020-11-30 00:12:14,379 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:12:14 WrapperNode [2020-11-30 00:12:14,380 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-30 00:12:14,381 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-30 00:12:14,381 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-30 00:12:14,381 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-30 00:12:14,393 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:12:14" (1/1) ... [2020-11-30 00:12:14,401 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:12:14" (1/1) ... [2020-11-30 00:12:14,435 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-30 00:12:14,436 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-30 00:12:14,437 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-30 00:12:14,437 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-30 00:12:14,446 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:12:14" (1/1) ... [2020-11-30 00:12:14,446 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:12:14" (1/1) ... [2020-11-30 00:12:14,450 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:12:14" (1/1) ... [2020-11-30 00:12:14,452 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:12:14" (1/1) ... [2020-11-30 00:12:14,461 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:12:14" (1/1) ... [2020-11-30 00:12:14,483 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:12:14" (1/1) ... [2020-11-30 00:12:14,485 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:12:14" (1/1) ... [2020-11-30 00:12:14,492 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-30 00:12:14,493 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-30 00:12:14,506 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-30 00:12:14,506 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-30 00:12:14,508 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:12:14" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4bc898ad-bf1d-425c-a1aa-cb5100799c0e/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 00:12:14,598 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-30 00:12:14,599 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-30 00:12:14,599 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-11-30 00:12:14,600 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-30 00:12:14,600 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-30 00:12:14,601 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-30 00:12:14,601 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-30 00:12:15,140 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-30 00:12:15,141 INFO L298 CfgBuilder]: Removed 20 assume(true) statements. [2020-11-30 00:12:15,143 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 12:12:15 BoogieIcfgContainer [2020-11-30 00:12:15,143 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-30 00:12:15,145 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-30 00:12:15,145 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-30 00:12:15,155 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-30 00:12:15,155 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.11 12:12:14" (1/3) ... [2020-11-30 00:12:15,156 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@336efbdc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 12:12:15, skipping insertion in model container [2020-11-30 00:12:15,157 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:12:14" (2/3) ... [2020-11-30 00:12:15,157 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@336efbdc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 12:12:15, skipping insertion in model container [2020-11-30 00:12:15,157 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 12:12:15" (3/3) ... [2020-11-30 00:12:15,159 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1232b.c [2020-11-30 00:12:15,179 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-30 00:12:15,186 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-30 00:12:15,201 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-30 00:12:15,228 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-30 00:12:15,229 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-30 00:12:15,229 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-30 00:12:15,229 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-30 00:12:15,229 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-30 00:12:15,229 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-30 00:12:15,229 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-30 00:12:15,230 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-30 00:12:15,245 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states. [2020-11-30 00:12:15,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-30 00:12:15,251 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:12:15,252 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:12:15,252 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:12:15,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:12:15,258 INFO L82 PathProgramCache]: Analyzing trace with hash -958075201, now seen corresponding path program 1 times [2020-11-30 00:12:15,266 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:12:15,267 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1475163513] [2020-11-30 00:12:15,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:12:15,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:12:15,484 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 00:12:15,485 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1475163513] [2020-11-30 00:12:15,486 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:12:15,486 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-30 00:12:15,487 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [308056864] [2020-11-30 00:12:15,493 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-30 00:12:15,493 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:12:15,507 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-30 00:12:15,508 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-30 00:12:15,510 INFO L87 Difference]: Start difference. First operand 33 states. Second operand 2 states. [2020-11-30 00:12:15,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:12:15,529 INFO L93 Difference]: Finished difference Result 63 states and 99 transitions. [2020-11-30 00:12:15,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-30 00:12:15,530 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2020-11-30 00:12:15,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:12:15,540 INFO L225 Difference]: With dead ends: 63 [2020-11-30 00:12:15,540 INFO L226 Difference]: Without dead ends: 29 [2020-11-30 00:12:15,544 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 00:12:15,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-11-30 00:12:15,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2020-11-30 00:12:15,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-11-30 00:12:15,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 40 transitions. [2020-11-30 00:12:15,587 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 40 transitions. Word has length 10 [2020-11-30 00:12:15,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:12:15,587 INFO L481 AbstractCegarLoop]: Abstraction has 29 states and 40 transitions. [2020-11-30 00:12:15,588 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-30 00:12:15,588 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 40 transitions. [2020-11-30 00:12:15,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-30 00:12:15,589 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:12:15,589 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:12:15,589 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-30 00:12:15,590 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:12:15,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:12:15,591 INFO L82 PathProgramCache]: Analyzing trace with hash 1001584898, now seen corresponding path program 1 times [2020-11-30 00:12:15,591 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:12:15,592 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1191623294] [2020-11-30 00:12:15,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:12:15,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:12:15,724 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 00:12:15,725 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1191623294] [2020-11-30 00:12:15,725 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:12:15,725 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-30 00:12:15,726 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2046655373] [2020-11-30 00:12:15,727 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-30 00:12:15,728 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:12:15,729 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-30 00:12:15,729 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-30 00:12:15,730 INFO L87 Difference]: Start difference. First operand 29 states and 40 transitions. Second operand 4 states. [2020-11-30 00:12:15,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:12:15,860 INFO L93 Difference]: Finished difference Result 53 states and 67 transitions. [2020-11-30 00:12:15,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-30 00:12:15,863 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-11-30 00:12:15,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:12:15,864 INFO L225 Difference]: With dead ends: 53 [2020-11-30 00:12:15,864 INFO L226 Difference]: Without dead ends: 44 [2020-11-30 00:12:15,865 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 00:12:15,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-11-30 00:12:15,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 31. [2020-11-30 00:12:15,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-11-30 00:12:15,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 42 transitions. [2020-11-30 00:12:15,882 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 42 transitions. Word has length 11 [2020-11-30 00:12:15,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:12:15,883 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 42 transitions. [2020-11-30 00:12:15,883 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-30 00:12:15,883 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 42 transitions. [2020-11-30 00:12:15,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-30 00:12:15,885 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:12:15,886 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:12:15,886 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-30 00:12:15,887 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:12:15,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:12:15,889 INFO L82 PathProgramCache]: Analyzing trace with hash 502201410, now seen corresponding path program 1 times [2020-11-30 00:12:15,890 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:12:15,890 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1568195730] [2020-11-30 00:12:15,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:12:15,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:12:15,981 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 00:12:15,981 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1568195730] [2020-11-30 00:12:15,982 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:12:15,982 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-30 00:12:15,982 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1599248505] [2020-11-30 00:12:15,983 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-30 00:12:15,983 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:12:15,984 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-30 00:12:15,984 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-30 00:12:15,985 INFO L87 Difference]: Start difference. First operand 31 states and 42 transitions. Second operand 4 states. [2020-11-30 00:12:16,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:12:16,096 INFO L93 Difference]: Finished difference Result 55 states and 69 transitions. [2020-11-30 00:12:16,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-30 00:12:16,098 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-11-30 00:12:16,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:12:16,099 INFO L225 Difference]: With dead ends: 55 [2020-11-30 00:12:16,099 INFO L226 Difference]: Without dead ends: 46 [2020-11-30 00:12:16,100 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 00:12:16,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-11-30 00:12:16,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 31. [2020-11-30 00:12:16,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-11-30 00:12:16,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 42 transitions. [2020-11-30 00:12:16,107 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 42 transitions. Word has length 12 [2020-11-30 00:12:16,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:12:16,107 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 42 transitions. [2020-11-30 00:12:16,107 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-30 00:12:16,107 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 42 transitions. [2020-11-30 00:12:16,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-11-30 00:12:16,108 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:12:16,109 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:12:16,109 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-30 00:12:16,109 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:12:16,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:12:16,110 INFO L82 PathProgramCache]: Analyzing trace with hash -1951233721, now seen corresponding path program 1 times [2020-11-30 00:12:16,110 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:12:16,114 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [213157093] [2020-11-30 00:12:16,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:12:16,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:12:16,210 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 00:12:16,211 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [213157093] [2020-11-30 00:12:16,211 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:12:16,211 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-30 00:12:16,211 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1059183984] [2020-11-30 00:12:16,212 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-30 00:12:16,212 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:12:16,212 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-30 00:12:16,213 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-30 00:12:16,213 INFO L87 Difference]: Start difference. First operand 31 states and 42 transitions. Second operand 4 states. [2020-11-30 00:12:16,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:12:16,305 INFO L93 Difference]: Finished difference Result 57 states and 71 transitions. [2020-11-30 00:12:16,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-30 00:12:16,312 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-11-30 00:12:16,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:12:16,313 INFO L225 Difference]: With dead ends: 57 [2020-11-30 00:12:16,313 INFO L226 Difference]: Without dead ends: 48 [2020-11-30 00:12:16,313 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 00:12:16,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-11-30 00:12:16,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 31. [2020-11-30 00:12:16,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-11-30 00:12:16,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 42 transitions. [2020-11-30 00:12:16,319 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 42 transitions. Word has length 13 [2020-11-30 00:12:16,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:12:16,320 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 42 transitions. [2020-11-30 00:12:16,320 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-30 00:12:16,320 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 42 transitions. [2020-11-30 00:12:16,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-11-30 00:12:16,321 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:12:16,321 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:12:16,321 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-30 00:12:16,321 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:12:16,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:12:16,322 INFO L82 PathProgramCache]: Analyzing trace with hash -555760345, now seen corresponding path program 1 times [2020-11-30 00:12:16,322 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:12:16,322 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1622030992] [2020-11-30 00:12:16,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:12:16,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:12:16,416 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 00:12:16,416 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1622030992] [2020-11-30 00:12:16,416 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:12:16,416 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-30 00:12:16,417 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [977417430] [2020-11-30 00:12:16,417 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-30 00:12:16,417 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:12:16,418 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-30 00:12:16,418 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-30 00:12:16,418 INFO L87 Difference]: Start difference. First operand 31 states and 42 transitions. Second operand 4 states. [2020-11-30 00:12:16,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:12:16,514 INFO L93 Difference]: Finished difference Result 55 states and 69 transitions. [2020-11-30 00:12:16,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-30 00:12:16,515 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2020-11-30 00:12:16,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:12:16,516 INFO L225 Difference]: With dead ends: 55 [2020-11-30 00:12:16,517 INFO L226 Difference]: Without dead ends: 46 [2020-11-30 00:12:16,517 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 00:12:16,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-11-30 00:12:16,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 31. [2020-11-30 00:12:16,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-11-30 00:12:16,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 42 transitions. [2020-11-30 00:12:16,527 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 42 transitions. Word has length 14 [2020-11-30 00:12:16,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:12:16,527 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 42 transitions. [2020-11-30 00:12:16,527 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-30 00:12:16,528 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 42 transitions. [2020-11-30 00:12:16,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-11-30 00:12:16,528 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:12:16,528 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:12:16,528 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-30 00:12:16,528 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:12:16,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:12:16,529 INFO L82 PathProgramCache]: Analyzing trace with hash 1219247017, now seen corresponding path program 1 times [2020-11-30 00:12:16,529 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:12:16,529 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [826913998] [2020-11-30 00:12:16,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:12:16,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:12:16,579 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:12:16,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:12:16,625 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:12:16,667 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 00:12:16,672 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-30 00:12:16,672 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-30 00:12:16,730 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.11 12:12:16 BoogieIcfgContainer [2020-11-30 00:12:16,730 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-30 00:12:16,732 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-30 00:12:16,732 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-30 00:12:16,732 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-30 00:12:16,733 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 12:12:15" (3/4) ... [2020-11-30 00:12:16,736 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-11-30 00:12:16,736 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-30 00:12:16,741 INFO L168 Benchmark]: Toolchain (without parser) took 2677.18 ms. Allocated memory was 109.1 MB in the beginning and 140.5 MB in the end (delta: 31.5 MB). Free memory was 82.8 MB in the beginning and 109.7 MB in the end (delta: -26.9 MB). Peak memory consumption was 3.0 MB. Max. memory is 16.1 GB. [2020-11-30 00:12:16,743 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 109.1 MB. Free memory was 69.1 MB in the beginning and 69.0 MB in the end (delta: 51.5 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 00:12:16,745 INFO L168 Benchmark]: CACSL2BoogieTranslator took 317.94 ms. Allocated memory is still 109.1 MB. Free memory was 82.6 MB in the beginning and 85.1 MB in the end (delta: -2.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-30 00:12:16,752 INFO L168 Benchmark]: Boogie Procedure Inliner took 54.96 ms. Allocated memory is still 109.1 MB. Free memory was 85.1 MB in the beginning and 83.1 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 00:12:16,753 INFO L168 Benchmark]: Boogie Preprocessor took 55.89 ms. Allocated memory is still 109.1 MB. Free memory was 83.1 MB in the beginning and 81.7 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 00:12:16,754 INFO L168 Benchmark]: RCFGBuilder took 650.12 ms. Allocated memory is still 109.1 MB. Free memory was 81.7 MB in the beginning and 61.1 MB in the end (delta: 20.5 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.1 GB. [2020-11-30 00:12:16,756 INFO L168 Benchmark]: TraceAbstraction took 1585.18 ms. Allocated memory was 109.1 MB in the beginning and 140.5 MB in the end (delta: 31.5 MB). Free memory was 60.7 MB in the beginning and 110.2 MB in the end (delta: -49.4 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 00:12:16,758 INFO L168 Benchmark]: Witness Printer took 5.00 ms. Allocated memory is still 140.5 MB. Free memory was 110.2 MB in the beginning and 109.7 MB in the end (delta: 405.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 00:12:16,764 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 109.1 MB. Free memory was 69.1 MB in the beginning and 69.0 MB in the end (delta: 51.5 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 317.94 ms. Allocated memory is still 109.1 MB. Free memory was 82.6 MB in the beginning and 85.1 MB in the end (delta: -2.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 54.96 ms. Allocated memory is still 109.1 MB. Free memory was 85.1 MB in the beginning and 83.1 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 55.89 ms. Allocated memory is still 109.1 MB. Free memory was 83.1 MB in the beginning and 81.7 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 650.12 ms. Allocated memory is still 109.1 MB. Free memory was 81.7 MB in the beginning and 61.1 MB in the end (delta: 20.5 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1585.18 ms. Allocated memory was 109.1 MB in the beginning and 140.5 MB in the end (delta: 31.5 MB). Free memory was 60.7 MB in the beginning and 110.2 MB in the end (delta: -49.4 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 5.00 ms. Allocated memory is still 140.5 MB. Free memory was 110.2 MB in the beginning and 109.7 MB in the end (delta: 405.1 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 81, overapproximation of someUnaryDOUBLEoperation at line 76. Possible FailurePath: [L76] double x = -0.0; [L77] double y = 0.0; [L21] __uint32_t msw, lsw; [L24] ieee_double_shape_type ew_u; [L25] ew_u.value = (x) [L26] EXPR ew_u.parts.msw [L26] (msw) = ew_u.parts.msw [L27] EXPR ew_u.parts.lsw [L27] (lsw) = ew_u.parts.lsw [L30-L31] COND FALSE !((msw == 0x00000000 && lsw == 0x00000000) || (msw == 0x80000000 && lsw == 0x00000000)) [L33-L34] COND FALSE !((msw >= 0x00100000 && msw <= 0x7fefffff) || (msw >= 0x80100000 && msw <= 0xffefffff)) [L36-L37] COND FALSE !(( msw <= 0x000fffff) || (msw >= 0x80000000 && msw <= 0x800fffff)) [L40-L41] COND FALSE !((msw == 0x7ff00000 && lsw == 0x00000000) || (msw == 0xfff00000 && lsw == 0x00000000)) [L44] return 0; [L48] COND TRUE __fpclassify_double(x) == 0 [L49] return y; [L78] double res = fmin_double(x, y); [L81] EXPR res == -0.0 && __signbit_double(res) == 1 [L81] COND TRUE !(res == -0.0 && __signbit_double(res) == 1) [L3] __assert_fail("0", "double_req_bl_1232b.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: 0.5s, 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, 0.2s 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 00:12:19,640 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-30 00:12:19,642 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-30 00:12:19,688 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-30 00:12:19,688 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-30 00:12:19,690 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-30 00:12:19,692 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-30 00:12:19,695 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-30 00:12:19,697 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-30 00:12:19,699 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-30 00:12:19,700 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-30 00:12:19,702 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-30 00:12:19,703 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-30 00:12:19,704 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-30 00:12:19,706 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-30 00:12:19,707 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-30 00:12:19,708 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-30 00:12:19,710 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-30 00:12:19,712 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-30 00:12:19,715 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-30 00:12:19,717 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-30 00:12:19,719 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-30 00:12:19,721 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-30 00:12:19,722 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-30 00:12:19,726 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-30 00:12:19,727 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-30 00:12:19,734 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-30 00:12:19,735 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-30 00:12:19,736 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-30 00:12:19,737 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-30 00:12:19,738 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-30 00:12:19,739 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-30 00:12:19,740 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-30 00:12:19,741 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-30 00:12:19,743 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-30 00:12:19,743 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-30 00:12:19,744 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-30 00:12:19,744 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-30 00:12:19,745 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-30 00:12:19,746 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-30 00:12:19,747 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-30 00:12:19,751 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_4bc898ad-bf1d-425c-a1aa-cb5100799c0e/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2020-11-30 00:12:19,814 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-30 00:12:19,815 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-30 00:12:19,816 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-30 00:12:19,816 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-30 00:12:19,817 INFO L138 SettingsManager]: * Use SBE=true [2020-11-30 00:12:19,817 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-30 00:12:19,817 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-30 00:12:19,818 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-30 00:12:19,818 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-30 00:12:19,818 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-30 00:12:19,818 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-30 00:12:19,818 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-30 00:12:19,819 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-11-30 00:12:19,819 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-11-30 00:12:19,819 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-30 00:12:19,819 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-30 00:12:19,820 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-30 00:12:19,820 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-30 00:12:19,820 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-30 00:12:19,820 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-30 00:12:19,821 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-30 00:12:19,821 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-30 00:12:19,821 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-30 00:12:19,821 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-30 00:12:19,821 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-30 00:12:19,824 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-30 00:12:19,824 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2020-11-30 00:12:19,825 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-11-30 00:12:19,826 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-30 00:12:19,826 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-30 00:12:19,826 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-30 00:12:19,826 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_4bc898ad-bf1d-425c-a1aa-cb5100799c0e/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_4bc898ad-bf1d-425c-a1aa-cb5100799c0e/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c8aa0f6d603c21abbc49650bbaaea4f693aff7f0 [2020-11-30 00:12:20,393 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-30 00:12:20,446 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-30 00:12:20,449 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-30 00:12:20,450 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-30 00:12:20,452 INFO L275 PluginConnector]: CDTParser initialized [2020-11-30 00:12:20,454 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_4bc898ad-bf1d-425c-a1aa-cb5100799c0e/bin/uautomizer/../../sv-benchmarks/c/float-newlib/double_req_bl_1232b.c [2020-11-30 00:12:20,548 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_4bc898ad-bf1d-425c-a1aa-cb5100799c0e/bin/uautomizer/data/eaa2ea9ec/c898bb62ba0d4fe39729176f6cc2db5a/FLAGbb2ba2a8a [2020-11-30 00:12:21,311 INFO L306 CDTParser]: Found 1 translation units. [2020-11-30 00:12:21,311 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_4bc898ad-bf1d-425c-a1aa-cb5100799c0e/sv-benchmarks/c/float-newlib/double_req_bl_1232b.c [2020-11-30 00:12:21,325 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_4bc898ad-bf1d-425c-a1aa-cb5100799c0e/bin/uautomizer/data/eaa2ea9ec/c898bb62ba0d4fe39729176f6cc2db5a/FLAGbb2ba2a8a [2020-11-30 00:12:21,655 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_4bc898ad-bf1d-425c-a1aa-cb5100799c0e/bin/uautomizer/data/eaa2ea9ec/c898bb62ba0d4fe39729176f6cc2db5a [2020-11-30 00:12:21,658 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-30 00:12:21,660 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-30 00:12:21,662 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-30 00:12:21,662 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-30 00:12:21,667 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-30 00:12:21,668 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 12:12:21" (1/1) ... [2020-11-30 00:12:21,671 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@23ab2abc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:12:21, skipping insertion in model container [2020-11-30 00:12:21,671 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 12:12:21" (1/1) ... [2020-11-30 00:12:21,680 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-30 00:12:21,700 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-30 00:12:21,914 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 00:12:21,932 INFO L203 MainTranslator]: Completed pre-run [2020-11-30 00:12:22,020 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 00:12:22,064 INFO L208 MainTranslator]: Completed translation [2020-11-30 00:12:22,065 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:12:22 WrapperNode [2020-11-30 00:12:22,065 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-30 00:12:22,066 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-30 00:12:22,067 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-30 00:12:22,069 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-30 00:12:22,080 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:12:22" (1/1) ... [2020-11-30 00:12:22,117 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:12:22" (1/1) ... [2020-11-30 00:12:22,166 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-30 00:12:22,167 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-30 00:12:22,167 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-30 00:12:22,167 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-30 00:12:22,181 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:12:22" (1/1) ... [2020-11-30 00:12:22,181 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:12:22" (1/1) ... [2020-11-30 00:12:22,210 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:12:22" (1/1) ... [2020-11-30 00:12:22,210 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:12:22" (1/1) ... [2020-11-30 00:12:22,222 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:12:22" (1/1) ... [2020-11-30 00:12:22,244 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:12:22" (1/1) ... [2020-11-30 00:12:22,247 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:12:22" (1/1) ... [2020-11-30 00:12:22,252 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-30 00:12:22,253 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-30 00:12:22,253 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-30 00:12:22,253 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-30 00:12:22,266 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:12:22" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4bc898ad-bf1d-425c-a1aa-cb5100799c0e/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 00:12:22,338 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2020-11-30 00:12:22,339 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-11-30 00:12:22,339 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-30 00:12:22,340 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2020-11-30 00:12:22,340 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-30 00:12:22,340 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-30 00:12:22,340 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-30 00:12:23,022 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-30 00:12:23,023 INFO L298 CfgBuilder]: Removed 20 assume(true) statements. [2020-11-30 00:12:23,024 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 12:12:23 BoogieIcfgContainer [2020-11-30 00:12:23,024 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-30 00:12:23,026 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-30 00:12:23,027 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-30 00:12:23,030 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-30 00:12:23,030 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.11 12:12:21" (1/3) ... [2020-11-30 00:12:23,031 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70e4844b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 12:12:23, skipping insertion in model container [2020-11-30 00:12:23,031 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:12:22" (2/3) ... [2020-11-30 00:12:23,032 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70e4844b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 12:12:23, skipping insertion in model container [2020-11-30 00:12:23,032 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 12:12:23" (3/3) ... [2020-11-30 00:12:23,033 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1232b.c [2020-11-30 00:12:23,045 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-30 00:12:23,050 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-30 00:12:23,062 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-30 00:12:23,105 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-30 00:12:23,105 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-30 00:12:23,105 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-30 00:12:23,105 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-30 00:12:23,106 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-30 00:12:23,106 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-30 00:12:23,106 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-30 00:12:23,106 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-30 00:12:23,121 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states. [2020-11-30 00:12:23,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-30 00:12:23,127 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:12:23,128 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:12:23,128 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:12:23,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:12:23,135 INFO L82 PathProgramCache]: Analyzing trace with hash -958075201, now seen corresponding path program 1 times [2020-11-30 00:12:23,147 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-30 00:12:23,148 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [916347232] [2020-11-30 00:12:23,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4bc898ad-bf1d-425c-a1aa-cb5100799c0e/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 00:12:23,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:12:23,291 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 1 conjunts are in the unsatisfiable core [2020-11-30 00:12:23,297 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:12:23,317 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 00:12:23,317 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 00:12:23,322 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 00:12:23,324 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [916347232] [2020-11-30 00:12:23,325 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:12:23,325 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-11-30 00:12:23,326 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [346717205] [2020-11-30 00:12:23,331 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-30 00:12:23,331 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-30 00:12:23,344 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-30 00:12:23,345 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-30 00:12:23,347 INFO L87 Difference]: Start difference. First operand 33 states. Second operand 2 states. [2020-11-30 00:12:23,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:12:23,367 INFO L93 Difference]: Finished difference Result 63 states and 99 transitions. [2020-11-30 00:12:23,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-30 00:12:23,368 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2020-11-30 00:12:23,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:12:23,378 INFO L225 Difference]: With dead ends: 63 [2020-11-30 00:12:23,378 INFO L226 Difference]: Without dead ends: 29 [2020-11-30 00:12:23,383 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 00:12:23,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-11-30 00:12:23,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2020-11-30 00:12:23,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-11-30 00:12:23,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 40 transitions. [2020-11-30 00:12:23,426 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 40 transitions. Word has length 10 [2020-11-30 00:12:23,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:12:23,427 INFO L481 AbstractCegarLoop]: Abstraction has 29 states and 40 transitions. [2020-11-30 00:12:23,427 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-30 00:12:23,427 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 40 transitions. [2020-11-30 00:12:23,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-30 00:12:23,428 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:12:23,428 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:12:23,638 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-11-30 00:12:23,638 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:12:23,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:12:23,639 INFO L82 PathProgramCache]: Analyzing trace with hash 1001584898, now seen corresponding path program 1 times [2020-11-30 00:12:23,640 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-30 00:12:23,640 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1130479838] [2020-11-30 00:12:23,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4bc898ad-bf1d-425c-a1aa-cb5100799c0e/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 00:12:23,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:12:23,744 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 3 conjunts are in the unsatisfiable core [2020-11-30 00:12:23,745 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:12:23,780 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 00:12:23,780 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 00:12:23,838 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 00:12:23,839 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1130479838] [2020-11-30 00:12:23,839 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:12:23,839 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2020-11-30 00:12:23,839 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1658343712] [2020-11-30 00:12:23,841 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-30 00:12:23,841 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-30 00:12:23,842 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-30 00:12:23,842 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-30 00:12:23,842 INFO L87 Difference]: Start difference. First operand 29 states and 40 transitions. Second operand 6 states. [2020-11-30 00:12:23,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:12:23,973 INFO L93 Difference]: Finished difference Result 68 states and 85 transitions. [2020-11-30 00:12:23,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-30 00:12:23,973 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 11 [2020-11-30 00:12:23,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:12:23,975 INFO L225 Difference]: With dead ends: 68 [2020-11-30 00:12:23,975 INFO L226 Difference]: Without dead ends: 59 [2020-11-30 00:12:23,976 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-11-30 00:12:23,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2020-11-30 00:12:23,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 31. [2020-11-30 00:12:23,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-11-30 00:12:23,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 42 transitions. [2020-11-30 00:12:23,984 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 42 transitions. Word has length 11 [2020-11-30 00:12:23,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:12:23,985 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 42 transitions. [2020-11-30 00:12:23,985 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-30 00:12:23,985 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 42 transitions. [2020-11-30 00:12:23,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-11-30 00:12:23,986 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:12:23,986 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:12:24,204 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-11-30 00:12:24,205 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:12:24,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:12:24,205 INFO L82 PathProgramCache]: Analyzing trace with hash 1219247017, now seen corresponding path program 1 times [2020-11-30 00:12:24,206 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-30 00:12:24,206 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [245403752] [2020-11-30 00:12:24,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4bc898ad-bf1d-425c-a1aa-cb5100799c0e/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 00:12:24,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:12:24,324 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 9 conjunts are in the unsatisfiable core [2020-11-30 00:12:24,326 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:12:24,423 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 00:12:24,423 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 00:12:24,486 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 00:12:24,566 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 00:12:24,566 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [245403752] [2020-11-30 00:12:24,566 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:12:24,566 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2020-11-30 00:12:24,567 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1743227051] [2020-11-30 00:12:24,567 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-30 00:12:24,567 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-30 00:12:24,568 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-30 00:12:24,568 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-30 00:12:24,569 INFO L87 Difference]: Start difference. First operand 31 states and 42 transitions. Second operand 6 states. [2020-11-30 00:12:24,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:12:24,736 INFO L93 Difference]: Finished difference Result 52 states and 69 transitions. [2020-11-30 00:12:24,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-30 00:12:24,739 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 14 [2020-11-30 00:12:24,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:12:24,740 INFO L225 Difference]: With dead ends: 52 [2020-11-30 00:12:24,740 INFO L226 Difference]: Without dead ends: 28 [2020-11-30 00:12:24,741 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 00:12:24,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-11-30 00:12:24,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2020-11-30 00:12:24,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-11-30 00:12:24,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 35 transitions. [2020-11-30 00:12:24,747 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 35 transitions. Word has length 14 [2020-11-30 00:12:24,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:12:24,748 INFO L481 AbstractCegarLoop]: Abstraction has 28 states and 35 transitions. [2020-11-30 00:12:24,748 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-30 00:12:24,748 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 35 transitions. [2020-11-30 00:12:24,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-11-30 00:12:24,749 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:12:24,749 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:12:24,950 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-11-30 00:12:24,950 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:12:24,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:12:24,951 INFO L82 PathProgramCache]: Analyzing trace with hash 1012446717, now seen corresponding path program 1 times [2020-11-30 00:12:24,952 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-30 00:12:24,952 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2035327277] [2020-11-30 00:12:24,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4bc898ad-bf1d-425c-a1aa-cb5100799c0e/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 00:12:25,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:12:25,067 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 3 conjunts are in the unsatisfiable core [2020-11-30 00:12:25,069 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:12:25,090 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 00:12:25,090 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 00:12:25,137 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 00:12:25,137 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2035327277] [2020-11-30 00:12:25,138 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:12:25,138 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2020-11-30 00:12:25,138 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [281153331] [2020-11-30 00:12:25,139 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-30 00:12:25,139 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-30 00:12:25,140 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-30 00:12:25,140 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-30 00:12:25,140 INFO L87 Difference]: Start difference. First operand 28 states and 35 transitions. Second operand 6 states. [2020-11-30 00:12:25,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:12:25,282 INFO L93 Difference]: Finished difference Result 65 states and 76 transitions. [2020-11-30 00:12:25,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-30 00:12:25,283 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 16 [2020-11-30 00:12:25,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:12:25,285 INFO L225 Difference]: With dead ends: 65 [2020-11-30 00:12:25,285 INFO L226 Difference]: Without dead ends: 56 [2020-11-30 00:12:25,286 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-11-30 00:12:25,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-11-30 00:12:25,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 30. [2020-11-30 00:12:25,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-11-30 00:12:25,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 37 transitions. [2020-11-30 00:12:25,295 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 37 transitions. Word has length 16 [2020-11-30 00:12:25,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:12:25,295 INFO L481 AbstractCegarLoop]: Abstraction has 30 states and 37 transitions. [2020-11-30 00:12:25,295 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-30 00:12:25,295 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 37 transitions. [2020-11-30 00:12:25,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-11-30 00:12:25,296 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:12:25,297 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 00:12:25,497 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2020-11-30 00:12:25,498 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:12:25,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:12:25,498 INFO L82 PathProgramCache]: Analyzing trace with hash -414082333, now seen corresponding path program 1 times [2020-11-30 00:12:25,498 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-30 00:12:25,499 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1488064169] [2020-11-30 00:12:25,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4bc898ad-bf1d-425c-a1aa-cb5100799c0e/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 00:12:25,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:12:25,663 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 7 conjunts are in the unsatisfiable core [2020-11-30 00:12:25,665 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:12:25,692 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 00:12:25,692 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 00:12:25,767 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 00:12:25,768 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1488064169] [2020-11-30 00:12:25,768 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:12:25,768 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2020-11-30 00:12:25,768 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1368005939] [2020-11-30 00:12:25,769 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-30 00:12:25,769 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-30 00:12:25,770 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-30 00:12:25,771 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-30 00:12:25,771 INFO L87 Difference]: Start difference. First operand 30 states and 37 transitions. Second operand 4 states. [2020-11-30 00:12:25,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:12:25,798 INFO L93 Difference]: Finished difference Result 40 states and 47 transitions. [2020-11-30 00:12:25,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 00:12:25,799 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 18 [2020-11-30 00:12:25,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:12:25,800 INFO L225 Difference]: With dead ends: 40 [2020-11-30 00:12:25,801 INFO L226 Difference]: Without dead ends: 30 [2020-11-30 00:12:25,801 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 00:12:25,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-11-30 00:12:25,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2020-11-30 00:12:25,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-11-30 00:12:25,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 36 transitions. [2020-11-30 00:12:25,808 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 36 transitions. Word has length 18 [2020-11-30 00:12:25,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:12:25,809 INFO L481 AbstractCegarLoop]: Abstraction has 30 states and 36 transitions. [2020-11-30 00:12:25,809 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-30 00:12:25,809 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 36 transitions. [2020-11-30 00:12:25,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-11-30 00:12:25,810 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:12:25,810 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 00:12:26,024 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 mathsat -unsat_core_generation=3 [2020-11-30 00:12:26,024 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:12:26,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:12:26,025 INFO L82 PathProgramCache]: Analyzing trace with hash -356824031, now seen corresponding path program 1 times [2020-11-30 00:12:26,025 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-30 00:12:26,026 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1303755490] [2020-11-30 00:12:26,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4bc898ad-bf1d-425c-a1aa-cb5100799c0e/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 00:12:26,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:12:26,191 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 8 conjunts are in the unsatisfiable core [2020-11-30 00:12:26,193 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:12:26,270 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 00:12:26,270 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 00:12:26,344 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 00:12:26,344 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1303755490] [2020-11-30 00:12:26,344 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:12:26,345 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 9 [2020-11-30 00:12:26,345 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2001740255] [2020-11-30 00:12:26,345 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-11-30 00:12:26,346 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-30 00:12:26,346 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-11-30 00:12:26,347 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-11-30 00:12:26,347 INFO L87 Difference]: Start difference. First operand 30 states and 36 transitions. Second operand 9 states. [2020-11-30 00:12:26,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:12:26,542 INFO L93 Difference]: Finished difference Result 42 states and 47 transitions. [2020-11-30 00:12:26,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-30 00:12:26,543 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 18 [2020-11-30 00:12:26,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:12:26,544 INFO L225 Difference]: With dead ends: 42 [2020-11-30 00:12:26,545 INFO L226 Difference]: Without dead ends: 39 [2020-11-30 00:12:26,545 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 26 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2020-11-30 00:12:26,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2020-11-30 00:12:26,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 32. [2020-11-30 00:12:26,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-11-30 00:12:26,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 38 transitions. [2020-11-30 00:12:26,553 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 38 transitions. Word has length 18 [2020-11-30 00:12:26,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:12:26,554 INFO L481 AbstractCegarLoop]: Abstraction has 32 states and 38 transitions. [2020-11-30 00:12:26,554 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-11-30 00:12:26,554 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 38 transitions. [2020-11-30 00:12:26,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-11-30 00:12:26,555 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:12:26,555 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 00:12:26,770 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 mathsat -unsat_core_generation=3 [2020-11-30 00:12:26,770 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:12:26,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:12:26,776 INFO L82 PathProgramCache]: Analyzing trace with hash -208358251, now seen corresponding path program 1 times [2020-11-30 00:12:26,777 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-30 00:12:26,779 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [496552893] [2020-11-30 00:12:26,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4bc898ad-bf1d-425c-a1aa-cb5100799c0e/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 00:12:26,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:12:26,944 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 9 conjunts are in the unsatisfiable core [2020-11-30 00:12:26,946 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:12:27,036 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 00:12:27,037 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 00:12:27,149 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 00:12:27,150 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [496552893] [2020-11-30 00:12:27,150 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:12:27,150 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2020-11-30 00:12:27,150 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1028533119] [2020-11-30 00:12:27,151 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-30 00:12:27,151 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-30 00:12:27,152 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-30 00:12:27,152 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-11-30 00:12:27,152 INFO L87 Difference]: Start difference. First operand 32 states and 38 transitions. Second operand 8 states. [2020-11-30 00:12:27,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:12:27,331 INFO L93 Difference]: Finished difference Result 45 states and 50 transitions. [2020-11-30 00:12:27,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-30 00:12:27,333 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-11-30 00:12:27,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:12:27,334 INFO L225 Difference]: With dead ends: 45 [2020-11-30 00:12:27,334 INFO L226 Difference]: Without dead ends: 27 [2020-11-30 00:12:27,334 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2020-11-30 00:12:27,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2020-11-30 00:12:27,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2020-11-30 00:12:27,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-11-30 00:12:27,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 28 transitions. [2020-11-30 00:12:27,341 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 28 transitions. Word has length 19 [2020-11-30 00:12:27,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:12:27,341 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 28 transitions. [2020-11-30 00:12:27,341 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-11-30 00:12:27,341 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 28 transitions. [2020-11-30 00:12:27,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-11-30 00:12:27,342 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:12:27,343 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 00:12:27,563 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 mathsat -unsat_core_generation=3 [2020-11-30 00:12:27,564 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:12:27,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:12:27,564 INFO L82 PathProgramCache]: Analyzing trace with hash -1524231306, now seen corresponding path program 1 times [2020-11-30 00:12:27,564 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-30 00:12:27,565 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [763494339] [2020-11-30 00:12:27,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4bc898ad-bf1d-425c-a1aa-cb5100799c0e/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 00:12:27,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:12:27,886 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:12:28,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:12:28,193 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:12:28,270 INFO L173 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2020-11-30 00:12:28,271 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-30 00:12:28,471 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 mathsat -unsat_core_generation=3 [2020-11-30 00:12:28,534 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.11 12:12:28 BoogieIcfgContainer [2020-11-30 00:12:28,535 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-30 00:12:28,535 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-30 00:12:28,535 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-30 00:12:28,536 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-30 00:12:28,536 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 12:12:23" (3/4) ... [2020-11-30 00:12:28,539 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-11-30 00:12:28,642 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_4bc898ad-bf1d-425c-a1aa-cb5100799c0e/bin/uautomizer/witness.graphml [2020-11-30 00:12:28,649 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-30 00:12:28,655 INFO L168 Benchmark]: Toolchain (without parser) took 6990.89 ms. Allocated memory was 56.6 MB in the beginning and 88.1 MB in the end (delta: 31.5 MB). Free memory was 35.4 MB in the beginning and 48.6 MB in the end (delta: -13.2 MB). Peak memory consumption was 18.3 MB. Max. memory is 16.1 GB. [2020-11-30 00:12:28,656 INFO L168 Benchmark]: CDTParser took 0.31 ms. Allocated memory is still 56.6 MB. Free memory was 39.1 MB in the beginning and 39.0 MB in the end (delta: 38.5 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 00:12:28,658 INFO L168 Benchmark]: CACSL2BoogieTranslator took 403.51 ms. Allocated memory is still 56.6 MB. Free memory was 35.1 MB in the beginning and 39.0 MB in the end (delta: -3.9 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-11-30 00:12:28,664 INFO L168 Benchmark]: Boogie Procedure Inliner took 99.44 ms. Allocated memory is still 56.6 MB. Free memory was 39.0 MB in the beginning and 37.1 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 00:12:28,665 INFO L168 Benchmark]: Boogie Preprocessor took 85.39 ms. Allocated memory is still 56.6 MB. Free memory was 37.1 MB in the beginning and 35.4 MB in the end (delta: 1.7 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 00:12:28,666 INFO L168 Benchmark]: RCFGBuilder took 771.82 ms. Allocated memory was 56.6 MB in the beginning and 73.4 MB in the end (delta: 16.8 MB). Free memory was 35.4 MB in the beginning and 43.9 MB in the end (delta: -8.5 MB). Peak memory consumption was 14.1 MB. Max. memory is 16.1 GB. [2020-11-30 00:12:28,667 INFO L168 Benchmark]: TraceAbstraction took 5508.53 ms. Allocated memory was 73.4 MB in the beginning and 88.1 MB in the end (delta: 14.7 MB). Free memory was 43.4 MB in the beginning and 50.7 MB in the end (delta: -7.2 MB). Peak memory consumption was 7.5 MB. Max. memory is 16.1 GB. [2020-11-30 00:12:28,668 INFO L168 Benchmark]: Witness Printer took 114.51 ms. Allocated memory is still 88.1 MB. Free memory was 50.7 MB in the beginning and 48.6 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 00:12:28,671 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31 ms. Allocated memory is still 56.6 MB. Free memory was 39.1 MB in the beginning and 39.0 MB in the end (delta: 38.5 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 403.51 ms. Allocated memory is still 56.6 MB. Free memory was 35.1 MB in the beginning and 39.0 MB in the end (delta: -3.9 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 99.44 ms. Allocated memory is still 56.6 MB. Free memory was 39.0 MB in the beginning and 37.1 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 85.39 ms. Allocated memory is still 56.6 MB. Free memory was 37.1 MB in the beginning and 35.4 MB in the end (delta: 1.7 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 771.82 ms. Allocated memory was 56.6 MB in the beginning and 73.4 MB in the end (delta: 16.8 MB). Free memory was 35.4 MB in the beginning and 43.9 MB in the end (delta: -8.5 MB). Peak memory consumption was 14.1 MB. Max. memory is 16.1 GB. * TraceAbstraction took 5508.53 ms. Allocated memory was 73.4 MB in the beginning and 88.1 MB in the end (delta: 14.7 MB). Free memory was 43.4 MB in the beginning and 50.7 MB in the end (delta: -7.2 MB). Peak memory consumption was 7.5 MB. Max. memory is 16.1 GB. * Witness Printer took 114.51 ms. Allocated memory is still 88.1 MB. Free memory was 50.7 MB in the beginning and 48.6 MB in the end (delta: 2.1 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: [L76] double x = -0.0; [L77] double y = 0.0; [L21] __uint32_t msw, lsw; [L24] ieee_double_shape_type ew_u; [L25] ew_u.value = (x) [L26] EXPR ew_u.parts.msw [L26] (msw) = ew_u.parts.msw [L27] EXPR ew_u.parts.lsw [L27] (lsw) = ew_u.parts.lsw [L30-L31] COND TRUE (msw == 0x00000000 && lsw == 0x00000000) || (msw == 0x80000000 && lsw == 0x00000000) [L32] return 2; [L48] COND FALSE !(__fpclassify_double(x) == 0) [L21] __uint32_t msw, lsw; [L24] ieee_double_shape_type ew_u; [L25] ew_u.value = (x) [L26] EXPR ew_u.parts.msw [L26] (msw) = ew_u.parts.msw [L27] EXPR ew_u.parts.lsw [L27] (lsw) = ew_u.parts.lsw [L30-L31] COND TRUE (msw == 0x00000000 && lsw == 0x00000000) || (msw == 0x80000000 && lsw == 0x00000000) [L32] return 2; [L50] COND FALSE !(__fpclassify_double(y) == 0) [L53] EXPR x < y ? x : y [L53] return x < y ? x : y; [L78] double res = fmin_double(x, y); [L81] EXPR res == -0.0 && __signbit_double(res) == 1 [L57] __uint32_t msw; [L60] ieee_double_shape_type gh_u; [L61] gh_u.value = (x) [L62] EXPR gh_u.parts.msw [L62] (msw) = gh_u.parts.msw [L65] return (msw & 0x80000000) != 0; [L81] EXPR res == -0.0 && __signbit_double(res) == 1 [L81] COND TRUE !(res == -0.0 && __signbit_double(res) == 1) [L3] __assert_fail("0", "double_req_bl_1232b.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: 5.3s, OverallIterations: 8, TraceHistogramMax: 1, AutomataDifference: 0.9s, 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, 0.4s 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, 10714 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...