./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_2145cfe1-759d-4f4f-a632-eb363ae886e5/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_2145cfe1-759d-4f4f-a632-eb363ae886e5/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_2145cfe1-759d-4f4f-a632-eb363ae886e5/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_2145cfe1-759d-4f4f-a632-eb363ae886e5/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_1232b.c -s /tmp/vcloud-vcloud-master/worker/run_dir_2145cfe1-759d-4f4f-a632-eb363ae886e5/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_2145cfe1-759d-4f4f-a632-eb363ae886e5/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_2145cfe1-759d-4f4f-a632-eb363ae886e5/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_2145cfe1-759d-4f4f-a632-eb363ae886e5/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_2145cfe1-759d-4f4f-a632-eb363ae886e5/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_2145cfe1-759d-4f4f-a632-eb363ae886e5/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_1232b.c -s /tmp/vcloud-vcloud-master/worker/run_dir_2145cfe1-759d-4f4f-a632-eb363ae886e5/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_2145cfe1-759d-4f4f-a632-eb363ae886e5/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 [2020-11-28 03:00:46,171 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 03:00:46,180 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 03:00:46,249 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 03:00:46,250 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 03:00:46,251 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 03:00:46,253 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 03:00:46,256 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 03:00:46,258 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 03:00:46,260 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 03:00:46,261 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 03:00:46,263 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 03:00:46,263 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 03:00:46,265 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 03:00:46,266 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 03:00:46,268 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 03:00:46,269 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 03:00:46,271 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 03:00:46,273 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 03:00:46,275 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 03:00:46,278 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 03:00:46,279 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 03:00:46,281 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 03:00:46,282 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 03:00:46,286 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 03:00:46,286 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 03:00:46,287 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 03:00:46,288 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 03:00:46,289 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 03:00:46,290 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 03:00:46,291 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 03:00:46,292 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 03:00:46,293 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 03:00:46,294 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 03:00:46,295 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 03:00:46,296 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 03:00:46,297 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 03:00:46,298 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 03:00:46,298 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 03:00:46,299 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 03:00:46,301 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 03:00:46,302 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_2145cfe1-759d-4f4f-a632-eb363ae886e5/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-28 03:00:46,328 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 03:00:46,329 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 03:00:46,330 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-28 03:00:46,330 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-28 03:00:46,331 INFO L138 SettingsManager]: * Use SBE=true [2020-11-28 03:00:46,331 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 03:00:46,331 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-28 03:00:46,332 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-28 03:00:46,332 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-28 03:00:46,333 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 03:00:46,333 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-28 03:00:46,333 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-28 03:00:46,334 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-28 03:00:46,334 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-28 03:00:46,334 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-28 03:00:46,335 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 03:00:46,335 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-28 03:00:46,336 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 03:00:46,336 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-28 03:00:46,336 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-28 03:00:46,336 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-28 03:00:46,337 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 03:00:46,337 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 03:00:46,338 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-28 03:00:46,338 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-28 03:00:46,338 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-28 03:00:46,339 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-28 03:00:46,339 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-28 03:00:46,339 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 03:00:46,340 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_2145cfe1-759d-4f4f-a632-eb363ae886e5/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_2145cfe1-759d-4f4f-a632-eb363ae886e5/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c8aa0f6d603c21abbc49650bbaaea4f693aff7f0 [2020-11-28 03:00:46,579 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 03:00:46,635 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 03:00:46,640 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 03:00:46,641 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 03:00:46,643 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 03:00:46,645 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_2145cfe1-759d-4f4f-a632-eb363ae886e5/bin/uautomizer/../../sv-benchmarks/c/float-newlib/double_req_bl_1232b.c [2020-11-28 03:00:46,748 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_2145cfe1-759d-4f4f-a632-eb363ae886e5/bin/uautomizer/data/4cec91a6c/f4a1236cc09a4b06be654ab4fbf40ea2/FLAG3bd67d79a [2020-11-28 03:00:47,269 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 03:00:47,270 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_2145cfe1-759d-4f4f-a632-eb363ae886e5/sv-benchmarks/c/float-newlib/double_req_bl_1232b.c [2020-11-28 03:00:47,277 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_2145cfe1-759d-4f4f-a632-eb363ae886e5/bin/uautomizer/data/4cec91a6c/f4a1236cc09a4b06be654ab4fbf40ea2/FLAG3bd67d79a [2020-11-28 03:00:47,618 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_2145cfe1-759d-4f4f-a632-eb363ae886e5/bin/uautomizer/data/4cec91a6c/f4a1236cc09a4b06be654ab4fbf40ea2 [2020-11-28 03:00:47,621 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 03:00:47,623 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 03:00:47,625 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 03:00:47,626 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 03:00:47,629 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 03:00:47,630 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:00:47" (1/1) ... [2020-11-28 03:00:47,633 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1a312bdb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:00:47, skipping insertion in model container [2020-11-28 03:00:47,633 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:00:47" (1/1) ... [2020-11-28 03:00:47,657 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 03:00:47,682 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 03:00:47,938 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 03:00:47,948 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 03:00:47,977 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 03:00:47,994 INFO L208 MainTranslator]: Completed translation [2020-11-28 03:00:47,995 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:00:47 WrapperNode [2020-11-28 03:00:47,995 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 03:00:47,996 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-28 03:00:47,996 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-28 03:00:47,996 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-28 03:00:48,006 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:00:47" (1/1) ... [2020-11-28 03:00:48,022 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:00:47" (1/1) ... [2020-11-28 03:00:48,059 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-28 03:00:48,065 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 03:00:48,065 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 03:00:48,065 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 03:00:48,073 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:00:47" (1/1) ... [2020-11-28 03:00:48,073 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:00:47" (1/1) ... [2020-11-28 03:00:48,076 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:00:47" (1/1) ... [2020-11-28 03:00:48,076 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:00:47" (1/1) ... [2020-11-28 03:00:48,084 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:00:47" (1/1) ... [2020-11-28 03:00:48,090 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:00:47" (1/1) ... [2020-11-28 03:00:48,092 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:00:47" (1/1) ... [2020-11-28 03:00:48,096 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 03:00:48,097 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 03:00:48,097 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 03:00:48,097 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 03:00:48,098 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:00:47" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2145cfe1-759d-4f4f-a632-eb363ae886e5/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 [2020-11-28 03:00:48,220 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-28 03:00:48,221 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-28 03:00:48,221 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-11-28 03:00:48,224 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 03:00:48,225 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 03:00:48,225 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-28 03:00:48,226 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-28 03:00:48,804 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 03:00:48,804 INFO L298 CfgBuilder]: Removed 20 assume(true) statements. [2020-11-28 03:00:48,806 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:00:48 BoogieIcfgContainer [2020-11-28 03:00:48,806 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 03:00:48,808 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-28 03:00:48,809 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-28 03:00:48,813 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-28 03:00:48,813 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 03:00:47" (1/3) ... [2020-11-28 03:00:48,814 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@153636b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:00:48, skipping insertion in model container [2020-11-28 03:00:48,814 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:00:47" (2/3) ... [2020-11-28 03:00:48,815 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@153636b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:00:48, skipping insertion in model container [2020-11-28 03:00:48,815 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:00:48" (3/3) ... [2020-11-28 03:00:48,817 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1232b.c [2020-11-28 03:00:48,829 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-28 03:00:48,834 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-28 03:00:48,847 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-28 03:00:48,872 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-28 03:00:48,872 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-28 03:00:48,872 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-28 03:00:48,872 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 03:00:48,872 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 03:00:48,872 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-28 03:00:48,873 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 03:00:48,873 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-28 03:00:48,886 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states. [2020-11-28 03:00:48,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-28 03:00:48,891 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:00:48,892 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:00:48,892 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:00:48,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:00:48,899 INFO L82 PathProgramCache]: Analyzing trace with hash -958075201, now seen corresponding path program 1 times [2020-11-28 03:00:48,909 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:00:48,909 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [782050374] [2020-11-28 03:00:48,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:00:49,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:00:49,051 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:00:49,052 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [782050374] [2020-11-28 03:00:49,053 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:00:49,053 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 03:00:49,054 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1938610356] [2020-11-28 03:00:49,059 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-28 03:00:49,059 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:00:49,074 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-28 03:00:49,075 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-28 03:00:49,077 INFO L87 Difference]: Start difference. First operand 33 states. Second operand 2 states. [2020-11-28 03:00:49,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:00:49,097 INFO L93 Difference]: Finished difference Result 63 states and 99 transitions. [2020-11-28 03:00:49,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-28 03:00:49,099 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2020-11-28 03:00:49,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:00:49,109 INFO L225 Difference]: With dead ends: 63 [2020-11-28 03:00:49,109 INFO L226 Difference]: Without dead ends: 29 [2020-11-28 03:00:49,112 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 [2020-11-28 03:00:49,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-11-28 03:00:49,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2020-11-28 03:00:49,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-11-28 03:00:49,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 40 transitions. [2020-11-28 03:00:49,154 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 40 transitions. Word has length 10 [2020-11-28 03:00:49,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:00:49,155 INFO L481 AbstractCegarLoop]: Abstraction has 29 states and 40 transitions. [2020-11-28 03:00:49,156 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-28 03:00:49,156 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 40 transitions. [2020-11-28 03:00:49,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-28 03:00:49,157 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:00:49,157 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:00:49,157 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-28 03:00:49,158 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:00:49,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:00:49,162 INFO L82 PathProgramCache]: Analyzing trace with hash 1001584898, now seen corresponding path program 1 times [2020-11-28 03:00:49,163 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:00:49,163 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [577853810] [2020-11-28 03:00:49,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:00:49,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:00:49,325 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:00:49,326 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [577853810] [2020-11-28 03:00:49,326 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:00:49,326 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-28 03:00:49,327 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1572413558] [2020-11-28 03:00:49,328 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 03:00:49,328 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:00:49,329 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 03:00:49,329 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-28 03:00:49,330 INFO L87 Difference]: Start difference. First operand 29 states and 40 transitions. Second operand 4 states. [2020-11-28 03:00:49,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:00:49,434 INFO L93 Difference]: Finished difference Result 53 states and 67 transitions. [2020-11-28 03:00:49,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-28 03:00:49,435 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-11-28 03:00:49,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:00:49,436 INFO L225 Difference]: With dead ends: 53 [2020-11-28 03:00:49,436 INFO L226 Difference]: Without dead ends: 44 [2020-11-28 03:00:49,438 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 [2020-11-28 03:00:49,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-11-28 03:00:49,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 31. [2020-11-28 03:00:49,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-11-28 03:00:49,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 42 transitions. [2020-11-28 03:00:49,446 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 42 transitions. Word has length 11 [2020-11-28 03:00:49,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:00:49,447 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 42 transitions. [2020-11-28 03:00:49,447 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 03:00:49,447 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 42 transitions. [2020-11-28 03:00:49,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-28 03:00:49,448 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:00:49,448 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:00:49,449 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-28 03:00:49,449 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:00:49,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:00:49,450 INFO L82 PathProgramCache]: Analyzing trace with hash 502201410, now seen corresponding path program 1 times [2020-11-28 03:00:49,450 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:00:49,451 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1773218848] [2020-11-28 03:00:49,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:00:49,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:00:49,607 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:00:49,607 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1773218848] [2020-11-28 03:00:49,607 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:00:49,608 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-28 03:00:49,608 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1477802338] [2020-11-28 03:00:49,608 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 03:00:49,608 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:00:49,609 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 03:00:49,610 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-28 03:00:49,610 INFO L87 Difference]: Start difference. First operand 31 states and 42 transitions. Second operand 4 states. [2020-11-28 03:00:49,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:00:49,694 INFO L93 Difference]: Finished difference Result 55 states and 69 transitions. [2020-11-28 03:00:49,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-28 03:00:49,698 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-11-28 03:00:49,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:00:49,699 INFO L225 Difference]: With dead ends: 55 [2020-11-28 03:00:49,699 INFO L226 Difference]: Without dead ends: 46 [2020-11-28 03:00:49,700 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 [2020-11-28 03:00:49,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-11-28 03:00:49,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 31. [2020-11-28 03:00:49,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-11-28 03:00:49,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 42 transitions. [2020-11-28 03:00:49,708 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 42 transitions. Word has length 12 [2020-11-28 03:00:49,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:00:49,722 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 42 transitions. [2020-11-28 03:00:49,722 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 03:00:49,722 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 42 transitions. [2020-11-28 03:00:49,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-11-28 03:00:49,723 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:00:49,724 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:00:49,724 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-28 03:00:49,724 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:00:49,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:00:49,738 INFO L82 PathProgramCache]: Analyzing trace with hash -1951233721, now seen corresponding path program 1 times [2020-11-28 03:00:49,738 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:00:49,738 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [331855313] [2020-11-28 03:00:49,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:00:49,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:00:49,790 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:00:49,790 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [331855313] [2020-11-28 03:00:49,790 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:00:49,791 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-28 03:00:49,791 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1525723250] [2020-11-28 03:00:49,791 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 03:00:49,791 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:00:49,792 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 03:00:49,792 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-28 03:00:49,793 INFO L87 Difference]: Start difference. First operand 31 states and 42 transitions. Second operand 4 states. [2020-11-28 03:00:49,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:00:49,971 INFO L93 Difference]: Finished difference Result 57 states and 71 transitions. [2020-11-28 03:00:49,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-28 03:00:49,978 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-11-28 03:00:49,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:00:49,980 INFO L225 Difference]: With dead ends: 57 [2020-11-28 03:00:49,980 INFO L226 Difference]: Without dead ends: 48 [2020-11-28 03:00:49,981 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 [2020-11-28 03:00:49,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-11-28 03:00:49,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 31. [2020-11-28 03:00:49,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-11-28 03:00:49,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 42 transitions. [2020-11-28 03:00:49,995 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 42 transitions. Word has length 13 [2020-11-28 03:00:49,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:00:49,996 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 42 transitions. [2020-11-28 03:00:49,996 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 03:00:49,997 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 42 transitions. [2020-11-28 03:00:49,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-11-28 03:00:50,000 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:00:50,000 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:00:50,000 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-28 03:00:50,000 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:00:50,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:00:50,001 INFO L82 PathProgramCache]: Analyzing trace with hash -555760345, now seen corresponding path program 1 times [2020-11-28 03:00:50,001 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:00:50,002 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1054036357] [2020-11-28 03:00:50,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:00:50,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:00:50,078 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:00:50,079 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1054036357] [2020-11-28 03:00:50,079 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:00:50,079 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-28 03:00:50,079 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1550466148] [2020-11-28 03:00:50,080 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 03:00:50,080 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:00:50,081 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 03:00:50,081 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-28 03:00:50,081 INFO L87 Difference]: Start difference. First operand 31 states and 42 transitions. Second operand 4 states. [2020-11-28 03:00:50,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:00:50,175 INFO L93 Difference]: Finished difference Result 55 states and 69 transitions. [2020-11-28 03:00:50,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-28 03:00:50,182 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2020-11-28 03:00:50,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:00:50,183 INFO L225 Difference]: With dead ends: 55 [2020-11-28 03:00:50,184 INFO L226 Difference]: Without dead ends: 46 [2020-11-28 03:00:50,184 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 [2020-11-28 03:00:50,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-11-28 03:00:50,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 31. [2020-11-28 03:00:50,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-11-28 03:00:50,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 42 transitions. [2020-11-28 03:00:50,199 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 42 transitions. Word has length 14 [2020-11-28 03:00:50,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:00:50,199 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 42 transitions. [2020-11-28 03:00:50,199 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 03:00:50,200 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 42 transitions. [2020-11-28 03:00:50,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-11-28 03:00:50,200 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:00:50,201 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:00:50,201 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-28 03:00:50,201 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:00:50,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:00:50,204 INFO L82 PathProgramCache]: Analyzing trace with hash 1219247017, now seen corresponding path program 1 times [2020-11-28 03:00:50,205 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:00:50,205 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [205266648] [2020-11-28 03:00:50,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:00:50,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:00:50,259 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:00:50,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:00:50,313 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:00:50,357 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 03:00:50,358 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-28 03:00:50,358 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-28 03:00:50,395 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 03:00:50 BoogieIcfgContainer [2020-11-28 03:00:50,395 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-28 03:00:50,396 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 03:00:50,396 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 03:00:50,396 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 03:00:50,397 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:00:48" (3/4) ... [2020-11-28 03:00:50,399 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-11-28 03:00:50,400 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 03:00:50,402 INFO L168 Benchmark]: Toolchain (without parser) took 2777.87 ms. Allocated memory is still 117.4 MB. Free memory was 85.1 MB in the beginning and 58.9 MB in the end (delta: 26.2 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.1 GB. [2020-11-28 03:00:50,403 INFO L168 Benchmark]: CDTParser took 0.34 ms. Allocated memory is still 86.0 MB. Free memory was 58.8 MB in the beginning and 58.8 MB in the end (delta: 26.5 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 03:00:50,404 INFO L168 Benchmark]: CACSL2BoogieTranslator took 370.08 ms. Allocated memory is still 117.4 MB. Free memory was 85.1 MB in the beginning and 94.8 MB in the end (delta: -9.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-28 03:00:50,405 INFO L168 Benchmark]: Boogie Procedure Inliner took 67.91 ms. Allocated memory is still 117.4 MB. Free memory was 94.8 MB in the beginning and 92.9 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 03:00:50,406 INFO L168 Benchmark]: Boogie Preprocessor took 31.13 ms. Allocated memory is still 117.4 MB. Free memory was 92.9 MB in the beginning and 91.4 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 03:00:50,407 INFO L168 Benchmark]: RCFGBuilder took 709.77 ms. Allocated memory is still 117.4 MB. Free memory was 91.4 MB in the beginning and 69.8 MB in the end (delta: 21.6 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.1 GB. [2020-11-28 03:00:50,408 INFO L168 Benchmark]: TraceAbstraction took 1587.12 ms. Allocated memory is still 117.4 MB. Free memory was 69.8 MB in the beginning and 58.9 MB in the end (delta: 11.0 MB). Peak memory consumption was 11.3 MB. Max. memory is 16.1 GB. [2020-11-28 03:00:50,408 INFO L168 Benchmark]: Witness Printer took 3.92 ms. Allocated memory is still 117.4 MB. Free memory is still 58.9 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 03:00:50,414 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34 ms. Allocated memory is still 86.0 MB. Free memory was 58.8 MB in the beginning and 58.8 MB in the end (delta: 26.5 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 370.08 ms. Allocated memory is still 117.4 MB. Free memory was 85.1 MB in the beginning and 94.8 MB in the end (delta: -9.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 67.91 ms. Allocated memory is still 117.4 MB. Free memory was 94.8 MB in the beginning and 92.9 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 31.13 ms. Allocated memory is still 117.4 MB. Free memory was 92.9 MB in the beginning and 91.4 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 709.77 ms. Allocated memory is still 117.4 MB. Free memory was 91.4 MB in the beginning and 69.8 MB in the end (delta: 21.6 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1587.12 ms. Allocated memory is still 117.4 MB. Free memory was 69.8 MB in the beginning and 58.9 MB in the end (delta: 11.0 MB). Peak memory consumption was 11.3 MB. Max. memory is 16.1 GB. * Witness Printer took 3.92 ms. Allocated memory is still 117.4 MB. Free memory is still 58.9 MB. There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 3]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of 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, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 22 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=33occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 60 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 74 NumberOfCodeBlocks, 74 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 55 ConstructedInterpolants, 0 QuantifiedInterpolants, 799 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.0-a4ecdab [2020-11-28 03:00:53,203 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 03:00:53,207 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 03:00:53,247 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 03:00:53,247 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 03:00:53,249 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 03:00:53,251 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 03:00:53,254 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 03:00:53,257 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 03:00:53,258 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 03:00:53,260 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 03:00:53,262 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 03:00:53,264 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 03:00:53,266 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 03:00:53,267 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 03:00:53,269 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 03:00:53,270 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 03:00:53,271 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 03:00:53,274 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 03:00:53,277 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 03:00:53,286 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 03:00:53,295 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 03:00:53,298 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 03:00:53,301 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 03:00:53,310 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 03:00:53,315 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 03:00:53,316 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 03:00:53,317 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 03:00:53,322 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 03:00:53,323 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 03:00:53,324 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 03:00:53,325 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 03:00:53,326 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 03:00:53,328 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 03:00:53,329 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 03:00:53,330 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 03:00:53,331 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 03:00:53,332 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 03:00:53,332 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 03:00:53,334 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 03:00:53,335 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 03:00:53,336 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_2145cfe1-759d-4f4f-a632-eb363ae886e5/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2020-11-28 03:00:53,392 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 03:00:53,392 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 03:00:53,396 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-28 03:00:53,396 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-28 03:00:53,396 INFO L138 SettingsManager]: * Use SBE=true [2020-11-28 03:00:53,396 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 03:00:53,397 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-28 03:00:53,397 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-28 03:00:53,397 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 03:00:53,397 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-28 03:00:53,399 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-28 03:00:53,399 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-28 03:00:53,399 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-11-28 03:00:53,399 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-11-28 03:00:53,400 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-28 03:00:53,400 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-28 03:00:53,400 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 03:00:53,400 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-28 03:00:53,401 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 03:00:53,401 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-28 03:00:53,401 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-28 03:00:53,409 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-28 03:00:53,409 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 03:00:53,414 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 03:00:53,414 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-28 03:00:53,414 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-28 03:00:53,414 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2020-11-28 03:00:53,415 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-11-28 03:00:53,415 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-28 03:00:53,415 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 03:00:53,415 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-28 03:00:53,416 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_2145cfe1-759d-4f4f-a632-eb363ae886e5/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_2145cfe1-759d-4f4f-a632-eb363ae886e5/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c8aa0f6d603c21abbc49650bbaaea4f693aff7f0 [2020-11-28 03:00:53,867 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 03:00:53,901 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 03:00:53,904 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 03:00:53,905 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 03:00:53,906 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 03:00:53,907 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_2145cfe1-759d-4f4f-a632-eb363ae886e5/bin/uautomizer/../../sv-benchmarks/c/float-newlib/double_req_bl_1232b.c [2020-11-28 03:00:53,985 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_2145cfe1-759d-4f4f-a632-eb363ae886e5/bin/uautomizer/data/d657919a2/7aa42671ecc94b8c959e5c9404c20de5/FLAG619660964 [2020-11-28 03:00:54,618 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 03:00:54,623 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_2145cfe1-759d-4f4f-a632-eb363ae886e5/sv-benchmarks/c/float-newlib/double_req_bl_1232b.c [2020-11-28 03:00:54,631 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_2145cfe1-759d-4f4f-a632-eb363ae886e5/bin/uautomizer/data/d657919a2/7aa42671ecc94b8c959e5c9404c20de5/FLAG619660964 [2020-11-28 03:00:54,930 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_2145cfe1-759d-4f4f-a632-eb363ae886e5/bin/uautomizer/data/d657919a2/7aa42671ecc94b8c959e5c9404c20de5 [2020-11-28 03:00:54,941 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 03:00:54,944 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 03:00:54,945 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 03:00:54,946 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 03:00:54,950 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 03:00:54,951 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:00:54" (1/1) ... [2020-11-28 03:00:54,954 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6e2df125 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:00:54, skipping insertion in model container [2020-11-28 03:00:54,955 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:00:54" (1/1) ... [2020-11-28 03:00:54,963 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 03:00:54,984 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 03:00:55,167 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 03:00:55,183 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 03:00:55,215 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 03:00:55,250 INFO L208 MainTranslator]: Completed translation [2020-11-28 03:00:55,250 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:00:55 WrapperNode [2020-11-28 03:00:55,251 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 03:00:55,252 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-28 03:00:55,252 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-28 03:00:55,255 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-28 03:00:55,265 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:00:55" (1/1) ... [2020-11-28 03:00:55,307 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:00:55" (1/1) ... [2020-11-28 03:00:55,355 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-28 03:00:55,358 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 03:00:55,359 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 03:00:55,359 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 03:00:55,367 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:00:55" (1/1) ... [2020-11-28 03:00:55,367 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:00:55" (1/1) ... [2020-11-28 03:00:55,378 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:00:55" (1/1) ... [2020-11-28 03:00:55,378 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:00:55" (1/1) ... [2020-11-28 03:00:55,388 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:00:55" (1/1) ... [2020-11-28 03:00:55,394 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:00:55" (1/1) ... [2020-11-28 03:00:55,397 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:00:55" (1/1) ... [2020-11-28 03:00:55,401 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 03:00:55,402 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 03:00:55,403 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 03:00:55,403 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 03:00:55,404 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:00:55" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2145cfe1-759d-4f4f-a632-eb363ae886e5/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 [2020-11-28 03:00:55,489 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2020-11-28 03:00:55,489 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-11-28 03:00:55,489 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-28 03:00:55,490 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2020-11-28 03:00:55,490 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 03:00:55,490 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 03:00:55,490 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-28 03:00:56,321 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 03:00:56,323 INFO L298 CfgBuilder]: Removed 20 assume(true) statements. [2020-11-28 03:00:56,325 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:00:56 BoogieIcfgContainer [2020-11-28 03:00:56,325 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 03:00:56,327 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-28 03:00:56,328 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-28 03:00:56,331 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-28 03:00:56,331 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 03:00:54" (1/3) ... [2020-11-28 03:00:56,332 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c24805d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:00:56, skipping insertion in model container [2020-11-28 03:00:56,333 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:00:55" (2/3) ... [2020-11-28 03:00:56,333 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c24805d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:00:56, skipping insertion in model container [2020-11-28 03:00:56,333 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:00:56" (3/3) ... [2020-11-28 03:00:56,339 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1232b.c [2020-11-28 03:00:56,352 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-28 03:00:56,357 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-28 03:00:56,372 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-28 03:00:56,405 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-28 03:00:56,405 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-28 03:00:56,405 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-28 03:00:56,406 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 03:00:56,406 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 03:00:56,406 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-28 03:00:56,406 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 03:00:56,407 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-28 03:00:56,422 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states. [2020-11-28 03:00:56,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-28 03:00:56,429 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:00:56,430 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:00:56,430 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:00:56,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:00:56,437 INFO L82 PathProgramCache]: Analyzing trace with hash -958075201, now seen corresponding path program 1 times [2020-11-28 03:00:56,451 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-28 03:00:56,452 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [186616300] [2020-11-28 03:00:56,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2145cfe1-759d-4f4f-a632-eb363ae886e5/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 [2020-11-28 03:00:56,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:00:56,582 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 1 conjunts are in the unsatisfiable core [2020-11-28 03:00:56,587 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:00:56,610 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:00:56,610 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 03:00:56,615 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:00:56,616 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [186616300] [2020-11-28 03:00:56,616 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:00:56,617 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-11-28 03:00:56,618 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1590486126] [2020-11-28 03:00:56,622 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-28 03:00:56,623 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-28 03:00:56,637 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-28 03:00:56,638 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-28 03:00:56,641 INFO L87 Difference]: Start difference. First operand 33 states. Second operand 2 states. [2020-11-28 03:00:56,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:00:56,662 INFO L93 Difference]: Finished difference Result 63 states and 99 transitions. [2020-11-28 03:00:56,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-28 03:00:56,663 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2020-11-28 03:00:56,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:00:56,674 INFO L225 Difference]: With dead ends: 63 [2020-11-28 03:00:56,674 INFO L226 Difference]: Without dead ends: 29 [2020-11-28 03:00:56,677 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 [2020-11-28 03:00:56,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-11-28 03:00:56,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2020-11-28 03:00:56,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-11-28 03:00:56,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 40 transitions. [2020-11-28 03:00:56,717 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 40 transitions. Word has length 10 [2020-11-28 03:00:56,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:00:56,718 INFO L481 AbstractCegarLoop]: Abstraction has 29 states and 40 transitions. [2020-11-28 03:00:56,718 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-28 03:00:56,718 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 40 transitions. [2020-11-28 03:00:56,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-28 03:00:56,719 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:00:56,720 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:00:56,940 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-11-28 03:00:56,940 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:00:56,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:00:56,942 INFO L82 PathProgramCache]: Analyzing trace with hash 1001584898, now seen corresponding path program 1 times [2020-11-28 03:00:56,943 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-28 03:00:56,943 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1489266256] [2020-11-28 03:00:56,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2145cfe1-759d-4f4f-a632-eb363ae886e5/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 [2020-11-28 03:00:57,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:00:57,069 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 3 conjunts are in the unsatisfiable core [2020-11-28 03:00:57,071 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:00:57,119 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:00:57,119 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 03:00:57,151 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:00:57,151 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1489266256] [2020-11-28 03:00:57,151 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:00:57,152 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2020-11-28 03:00:57,152 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [23629664] [2020-11-28 03:00:57,153 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-28 03:00:57,154 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-28 03:00:57,155 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-28 03:00:57,155 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-28 03:00:57,156 INFO L87 Difference]: Start difference. First operand 29 states and 40 transitions. Second operand 6 states. [2020-11-28 03:00:57,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:00:57,302 INFO L93 Difference]: Finished difference Result 68 states and 85 transitions. [2020-11-28 03:00:57,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-28 03:00:57,303 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 11 [2020-11-28 03:00:57,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:00:57,305 INFO L225 Difference]: With dead ends: 68 [2020-11-28 03:00:57,305 INFO L226 Difference]: Without dead ends: 59 [2020-11-28 03:00:57,307 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-11-28 03:00:57,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2020-11-28 03:00:57,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 31. [2020-11-28 03:00:57,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-11-28 03:00:57,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 42 transitions. [2020-11-28 03:00:57,317 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 42 transitions. Word has length 11 [2020-11-28 03:00:57,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:00:57,318 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 42 transitions. [2020-11-28 03:00:57,318 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-28 03:00:57,319 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 42 transitions. [2020-11-28 03:00:57,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-11-28 03:00:57,320 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:00:57,320 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:00:57,534 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-11-28 03:00:57,537 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:00:57,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:00:57,538 INFO L82 PathProgramCache]: Analyzing trace with hash 1219247017, now seen corresponding path program 1 times [2020-11-28 03:00:57,539 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-28 03:00:57,539 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [689508460] [2020-11-28 03:00:57,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2145cfe1-759d-4f4f-a632-eb363ae886e5/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 [2020-11-28 03:00:57,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:00:57,631 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 9 conjunts are in the unsatisfiable core [2020-11-28 03:00:57,633 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:00:57,743 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:00:57,743 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 03:00:57,802 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-28 03:00:57,952 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:00:57,953 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [689508460] [2020-11-28 03:00:57,953 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:00:57,953 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2020-11-28 03:00:57,954 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [474020419] [2020-11-28 03:00:57,954 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-28 03:00:57,954 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-28 03:00:57,955 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-28 03:00:57,956 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-28 03:00:57,956 INFO L87 Difference]: Start difference. First operand 31 states and 42 transitions. Second operand 6 states. [2020-11-28 03:00:58,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:00:58,109 INFO L93 Difference]: Finished difference Result 52 states and 69 transitions. [2020-11-28 03:00:58,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-28 03:00:58,112 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 14 [2020-11-28 03:00:58,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:00:58,112 INFO L225 Difference]: With dead ends: 52 [2020-11-28 03:00:58,112 INFO L226 Difference]: Without dead ends: 28 [2020-11-28 03:00:58,113 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-11-28 03:00:58,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-11-28 03:00:58,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2020-11-28 03:00:58,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-11-28 03:00:58,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 35 transitions. [2020-11-28 03:00:58,119 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 35 transitions. Word has length 14 [2020-11-28 03:00:58,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:00:58,119 INFO L481 AbstractCegarLoop]: Abstraction has 28 states and 35 transitions. [2020-11-28 03:00:58,119 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-28 03:00:58,120 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 35 transitions. [2020-11-28 03:00:58,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-11-28 03:00:58,121 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:00:58,121 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:00:58,326 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-11-28 03:00:58,326 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:00:58,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:00:58,327 INFO L82 PathProgramCache]: Analyzing trace with hash 1012446717, now seen corresponding path program 1 times [2020-11-28 03:00:58,327 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-28 03:00:58,328 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [625567393] [2020-11-28 03:00:58,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2145cfe1-759d-4f4f-a632-eb363ae886e5/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 [2020-11-28 03:00:58,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:00:58,436 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 3 conjunts are in the unsatisfiable core [2020-11-28 03:00:58,437 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:00:58,451 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:00:58,452 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 03:00:58,501 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:00:58,501 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [625567393] [2020-11-28 03:00:58,502 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:00:58,502 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2020-11-28 03:00:58,502 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [171645201] [2020-11-28 03:00:58,503 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-28 03:00:58,503 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-28 03:00:58,504 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-28 03:00:58,504 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-28 03:00:58,504 INFO L87 Difference]: Start difference. First operand 28 states and 35 transitions. Second operand 6 states. [2020-11-28 03:00:58,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:00:58,674 INFO L93 Difference]: Finished difference Result 65 states and 76 transitions. [2020-11-28 03:00:58,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-28 03:00:58,675 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 16 [2020-11-28 03:00:58,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:00:58,677 INFO L225 Difference]: With dead ends: 65 [2020-11-28 03:00:58,677 INFO L226 Difference]: Without dead ends: 56 [2020-11-28 03:00:58,678 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 [2020-11-28 03:00:58,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-11-28 03:00:58,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 30. [2020-11-28 03:00:58,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-11-28 03:00:58,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 37 transitions. [2020-11-28 03:00:58,694 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 37 transitions. Word has length 16 [2020-11-28 03:00:58,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:00:58,694 INFO L481 AbstractCegarLoop]: Abstraction has 30 states and 37 transitions. [2020-11-28 03:00:58,695 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-28 03:00:58,695 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 37 transitions. [2020-11-28 03:00:58,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-11-28 03:00:58,699 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:00:58,699 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:00:58,923 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2020-11-28 03:00:58,924 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:00:58,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:00:58,924 INFO L82 PathProgramCache]: Analyzing trace with hash -414082333, now seen corresponding path program 1 times [2020-11-28 03:00:58,925 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-28 03:00:58,925 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1977599740] [2020-11-28 03:00:58,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2145cfe1-759d-4f4f-a632-eb363ae886e5/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 [2020-11-28 03:00:59,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:00:59,058 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 7 conjunts are in the unsatisfiable core [2020-11-28 03:00:59,060 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:00:59,101 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:00:59,102 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 03:00:59,167 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:00:59,168 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1977599740] [2020-11-28 03:00:59,168 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:00:59,168 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2020-11-28 03:00:59,168 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [345996229] [2020-11-28 03:00:59,169 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 03:00:59,169 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-28 03:00:59,170 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 03:00:59,170 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-28 03:00:59,170 INFO L87 Difference]: Start difference. First operand 30 states and 37 transitions. Second operand 4 states. [2020-11-28 03:00:59,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:00:59,194 INFO L93 Difference]: Finished difference Result 40 states and 47 transitions. [2020-11-28 03:00:59,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 03:00:59,195 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 18 [2020-11-28 03:00:59,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:00:59,196 INFO L225 Difference]: With dead ends: 40 [2020-11-28 03:00:59,196 INFO L226 Difference]: Without dead ends: 30 [2020-11-28 03:00:59,197 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 [2020-11-28 03:00:59,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-11-28 03:00:59,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2020-11-28 03:00:59,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-11-28 03:00:59,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 36 transitions. [2020-11-28 03:00:59,202 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 36 transitions. Word has length 18 [2020-11-28 03:00:59,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:00:59,203 INFO L481 AbstractCegarLoop]: Abstraction has 30 states and 36 transitions. [2020-11-28 03:00:59,203 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 03:00:59,203 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 36 transitions. [2020-11-28 03:00:59,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-11-28 03:00:59,204 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:00:59,204 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:00:59,416 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 mathsat -unsat_core_generation=3 [2020-11-28 03:00:59,417 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:00:59,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:00:59,418 INFO L82 PathProgramCache]: Analyzing trace with hash -356824031, now seen corresponding path program 1 times [2020-11-28 03:00:59,418 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-28 03:00:59,418 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [610014867] [2020-11-28 03:00:59,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2145cfe1-759d-4f4f-a632-eb363ae886e5/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 [2020-11-28 03:00:59,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:00:59,562 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 8 conjunts are in the unsatisfiable core [2020-11-28 03:00:59,563 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:00:59,621 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:00:59,621 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 03:00:59,690 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:00:59,690 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [610014867] [2020-11-28 03:00:59,692 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:00:59,692 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 9 [2020-11-28 03:00:59,693 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1995753403] [2020-11-28 03:00:59,693 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-11-28 03:00:59,693 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-28 03:00:59,694 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-11-28 03:00:59,694 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-11-28 03:00:59,694 INFO L87 Difference]: Start difference. First operand 30 states and 36 transitions. Second operand 9 states. [2020-11-28 03:00:59,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:00:59,864 INFO L93 Difference]: Finished difference Result 42 states and 47 transitions. [2020-11-28 03:00:59,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-28 03:00:59,864 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 18 [2020-11-28 03:00:59,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:00:59,865 INFO L225 Difference]: With dead ends: 42 [2020-11-28 03:00:59,866 INFO L226 Difference]: Without dead ends: 39 [2020-11-28 03:00:59,866 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 26 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2020-11-28 03:00:59,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2020-11-28 03:00:59,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 32. [2020-11-28 03:00:59,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-11-28 03:00:59,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 38 transitions. [2020-11-28 03:00:59,872 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 38 transitions. Word has length 18 [2020-11-28 03:00:59,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:00:59,872 INFO L481 AbstractCegarLoop]: Abstraction has 32 states and 38 transitions. [2020-11-28 03:00:59,873 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-11-28 03:00:59,873 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 38 transitions. [2020-11-28 03:00:59,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-11-28 03:00:59,874 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:00:59,874 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:01:00,085 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 mathsat -unsat_core_generation=3 [2020-11-28 03:01:00,086 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:01:00,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:01:00,086 INFO L82 PathProgramCache]: Analyzing trace with hash -208358251, now seen corresponding path program 1 times [2020-11-28 03:01:00,087 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-28 03:01:00,087 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [273763545] [2020-11-28 03:01:00,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2145cfe1-759d-4f4f-a632-eb363ae886e5/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 [2020-11-28 03:01:00,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:01:00,233 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 9 conjunts are in the unsatisfiable core [2020-11-28 03:01:00,236 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:01:00,302 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:01:00,302 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 03:01:00,398 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:01:00,398 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [273763545] [2020-11-28 03:01:00,399 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:01:00,399 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2020-11-28 03:01:00,399 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1462588318] [2020-11-28 03:01:00,400 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-28 03:01:00,400 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-28 03:01:00,400 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-28 03:01:00,401 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-11-28 03:01:00,401 INFO L87 Difference]: Start difference. First operand 32 states and 38 transitions. Second operand 8 states. [2020-11-28 03:01:00,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:01:00,578 INFO L93 Difference]: Finished difference Result 45 states and 50 transitions. [2020-11-28 03:01:00,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-28 03:01:00,584 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-11-28 03:01:00,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:01:00,585 INFO L225 Difference]: With dead ends: 45 [2020-11-28 03:01:00,585 INFO L226 Difference]: Without dead ends: 27 [2020-11-28 03:01:00,586 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 [2020-11-28 03:01:00,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2020-11-28 03:01:00,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2020-11-28 03:01:00,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-11-28 03:01:00,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 28 transitions. [2020-11-28 03:01:00,591 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 28 transitions. Word has length 19 [2020-11-28 03:01:00,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:01:00,592 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 28 transitions. [2020-11-28 03:01:00,592 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-11-28 03:01:00,592 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 28 transitions. [2020-11-28 03:01:00,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-11-28 03:01:00,593 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:01:00,593 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] [2020-11-28 03:01:00,793 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 mathsat -unsat_core_generation=3 [2020-11-28 03:01:00,794 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:01:00,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:01:00,794 INFO L82 PathProgramCache]: Analyzing trace with hash -1524231306, now seen corresponding path program 1 times [2020-11-28 03:01:00,795 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-28 03:01:00,795 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1024810878] [2020-11-28 03:01:00,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2145cfe1-759d-4f4f-a632-eb363ae886e5/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 [2020-11-28 03:01:01,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:01:01,102 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:01:01,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:01:01,400 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:01:01,492 INFO L173 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2020-11-28 03:01:01,492 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-28 03:01:01,693 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 mathsat -unsat_core_generation=3 [2020-11-28 03:01:01,750 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 03:01:01 BoogieIcfgContainer [2020-11-28 03:01:01,751 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-28 03:01:01,751 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 03:01:01,751 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 03:01:01,752 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 03:01:01,752 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:00:56" (3/4) ... [2020-11-28 03:01:01,755 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-11-28 03:01:01,837 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_2145cfe1-759d-4f4f-a632-eb363ae886e5/bin/uautomizer/witness.graphml [2020-11-28 03:01:01,837 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 03:01:01,840 INFO L168 Benchmark]: Toolchain (without parser) took 6894.93 ms. Allocated memory was 69.2 MB in the beginning and 90.2 MB in the end (delta: 21.0 MB). Free memory was 51.3 MB in the beginning and 28.0 MB in the end (delta: 23.3 MB). Peak memory consumption was 43.8 MB. Max. memory is 16.1 GB. [2020-11-28 03:01:01,841 INFO L168 Benchmark]: CDTParser took 0.31 ms. Allocated memory is still 69.2 MB. Free memory was 51.2 MB in the beginning and 51.2 MB in the end (delta: 55.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 03:01:01,841 INFO L168 Benchmark]: CACSL2BoogieTranslator took 305.87 ms. Allocated memory is still 69.2 MB. Free memory was 51.2 MB in the beginning and 52.9 MB in the end (delta: -1.7 MB). Peak memory consumption was 14.0 MB. Max. memory is 16.1 GB. [2020-11-28 03:01:01,843 INFO L168 Benchmark]: Boogie Procedure Inliner took 105.25 ms. Allocated memory is still 69.2 MB. Free memory was 52.6 MB in the beginning and 50.9 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 03:01:01,845 INFO L168 Benchmark]: Boogie Preprocessor took 43.76 ms. Allocated memory is still 69.2 MB. Free memory was 50.9 MB in the beginning and 49.2 MB in the end (delta: 1.7 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 03:01:01,847 INFO L168 Benchmark]: RCFGBuilder took 922.85 ms. Allocated memory is still 69.2 MB. Free memory was 49.2 MB in the beginning and 51.5 MB in the end (delta: -2.3 MB). Peak memory consumption was 26.3 MB. Max. memory is 16.1 GB. [2020-11-28 03:01:01,848 INFO L168 Benchmark]: TraceAbstraction took 5423.23 ms. Allocated memory was 69.2 MB in the beginning and 90.2 MB in the end (delta: 21.0 MB). Free memory was 51.2 MB in the beginning and 30.9 MB in the end (delta: 20.2 MB). Peak memory consumption was 41.3 MB. Max. memory is 16.1 GB. [2020-11-28 03:01:01,849 INFO L168 Benchmark]: Witness Printer took 86.28 ms. Allocated memory is still 90.2 MB. Free memory was 30.9 MB in the beginning and 28.0 MB in the end (delta: 2.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 03:01:01,851 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 69.2 MB. Free memory was 51.2 MB in the beginning and 51.2 MB in the end (delta: 55.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 305.87 ms. Allocated memory is still 69.2 MB. Free memory was 51.2 MB in the beginning and 52.9 MB in the end (delta: -1.7 MB). Peak memory consumption was 14.0 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 105.25 ms. Allocated memory is still 69.2 MB. Free memory was 52.6 MB in the beginning and 50.9 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 43.76 ms. Allocated memory is still 69.2 MB. Free memory was 50.9 MB in the beginning and 49.2 MB in the end (delta: 1.7 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 922.85 ms. Allocated memory is still 69.2 MB. Free memory was 49.2 MB in the beginning and 51.5 MB in the end (delta: -2.3 MB). Peak memory consumption was 26.3 MB. Max. memory is 16.1 GB. * TraceAbstraction took 5423.23 ms. Allocated memory was 69.2 MB in the beginning and 90.2 MB in the end (delta: 21.0 MB). Free memory was 51.2 MB in the beginning and 30.9 MB in the end (delta: 20.2 MB). Peak memory consumption was 41.3 MB. Max. memory is 16.1 GB. * Witness Printer took 86.28 ms. Allocated memory is still 90.2 MB. Free memory was 30.9 MB in the beginning and 28.0 MB in the end (delta: 2.9 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: 5.2s, 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...