./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/float-newlib/float_req_bl_1232b.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version ee8e70e7 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/float-newlib/float_req_bl_1232b.c -s /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux --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 38561929b5142acce65cab4da64e7c4ae5f17524 ................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/float-newlib/float_req_bl_1232b.c -s /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux --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 38561929b5142acce65cab4da64e7c4ae5f17524 ....................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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-ee8e70e [2020-10-24 15:11:30,470 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-24 15:11:30,473 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-24 15:11:30,540 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-24 15:11:30,541 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-24 15:11:30,547 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-24 15:11:30,553 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-24 15:11:30,557 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-24 15:11:30,562 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-24 15:11:30,570 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-24 15:11:30,573 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-24 15:11:30,579 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-24 15:11:30,580 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-24 15:11:30,584 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-24 15:11:30,586 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-24 15:11:30,588 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-24 15:11:30,589 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-24 15:11:30,593 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-24 15:11:30,597 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-24 15:11:30,605 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-24 15:11:30,608 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-24 15:11:30,610 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-24 15:11:30,612 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-24 15:11:30,614 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-24 15:11:30,623 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-24 15:11:30,624 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-24 15:11:30,624 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-24 15:11:30,627 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-24 15:11:30,628 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-24 15:11:30,629 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-24 15:11:30,630 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-24 15:11:30,631 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-24 15:11:30,633 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-24 15:11:30,634 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-24 15:11:30,636 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-24 15:11:30,636 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-24 15:11:30,637 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-24 15:11:30,637 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-24 15:11:30,638 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-24 15:11:30,640 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-24 15:11:30,642 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-24 15:11:30,644 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-24 15:11:30,683 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-24 15:11:30,683 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-24 15:11:30,685 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-24 15:11:30,685 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-24 15:11:30,685 INFO L138 SettingsManager]: * Use SBE=true [2020-10-24 15:11:30,686 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-24 15:11:30,686 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-24 15:11:30,686 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-24 15:11:30,686 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-24 15:11:30,687 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-24 15:11:30,687 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-24 15:11:30,687 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-24 15:11:30,687 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-24 15:11:30,687 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-24 15:11:30,688 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-24 15:11:30,688 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-24 15:11:30,688 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-24 15:11:30,688 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-24 15:11:30,689 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-24 15:11:30,689 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-24 15:11:30,689 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-24 15:11:30,689 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-24 15:11:30,690 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-24 15:11:30,690 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-24 15:11:30,690 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-24 15:11:30,690 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-24 15:11:30,690 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-24 15:11:30,691 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-24 15:11:30,691 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-24 15:11:30,691 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:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 38561929b5142acce65cab4da64e7c4ae5f17524 [2020-10-24 15:11:31,101 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-24 15:11:31,142 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-24 15:11:31,148 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-24 15:11:31,150 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-24 15:11:31,152 INFO L275 PluginConnector]: CDTParser initialized [2020-10-24 15:11:31,154 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-newlib/float_req_bl_1232b.c [2020-10-24 15:11:31,237 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/21d5b9379/f257fc10ff174606ab6c21cac697ed02/FLAG4ee92eae1 [2020-10-24 15:11:31,847 INFO L306 CDTParser]: Found 1 translation units. [2020-10-24 15:11:31,848 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/releaseScripts/default/sv-benchmarks/c/float-newlib/float_req_bl_1232b.c [2020-10-24 15:11:31,856 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/21d5b9379/f257fc10ff174606ab6c21cac697ed02/FLAG4ee92eae1 [2020-10-24 15:11:32,196 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/21d5b9379/f257fc10ff174606ab6c21cac697ed02 [2020-10-24 15:11:32,200 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-24 15:11:32,210 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-24 15:11:32,212 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-24 15:11:32,213 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-24 15:11:32,217 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-24 15:11:32,218 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 03:11:32" (1/1) ... [2020-10-24 15:11:32,222 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@42f0c377 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:11:32, skipping insertion in model container [2020-10-24 15:11:32,222 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 03:11:32" (1/1) ... [2020-10-24 15:11:32,231 INFO L146 MainTranslator]: Starting translation in SV-COMP mode [2020-10-24 15:11:32,248 INFO L179 MainTranslator]: Built tables and reachable declarations [2020-10-24 15:11:32,445 INFO L211 PostProcessor]: Analyzing one entry point: main [2020-10-24 15:11:32,457 INFO L212 MainTranslator]: Completed pre-run [2020-10-24 15:11:32,486 INFO L211 PostProcessor]: Analyzing one entry point: main [2020-10-24 15:11:32,504 INFO L217 MainTranslator]: Completed translation [2020-10-24 15:11:32,505 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:11:32 WrapperNode [2020-10-24 15:11:32,505 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-24 15:11:32,507 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-24 15:11:32,507 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-24 15:11:32,508 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-24 15:11:32,517 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:11:32" (1/1) ... [2020-10-24 15:11:32,527 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:11:32" (1/1) ... [2020-10-24 15:11:32,560 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-24 15:11:32,561 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-24 15:11:32,564 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-24 15:11:32,564 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-24 15:11:32,581 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:11:32" (1/1) ... [2020-10-24 15:11:32,581 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:11:32" (1/1) ... [2020-10-24 15:11:32,584 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:11:32" (1/1) ... [2020-10-24 15:11:32,585 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:11:32" (1/1) ... [2020-10-24 15:11:32,593 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:11:32" (1/1) ... [2020-10-24 15:11:32,599 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:11:32" (1/1) ... [2020-10-24 15:11:32,601 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:11:32" (1/1) ... [2020-10-24 15:11:32,604 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-24 15:11:32,606 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-24 15:11:32,606 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-24 15:11:32,606 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-24 15:11:32,607 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:11:32" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/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 [2020-10-24 15:11:32,687 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-24 15:11:32,687 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-24 15:11:32,687 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-10-24 15:11:32,687 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-24 15:11:32,688 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-24 15:11:32,688 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-24 15:11:32,688 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-24 15:11:33,275 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-24 15:11:33,276 INFO L298 CfgBuilder]: Removed 20 assume(true) statements. [2020-10-24 15:11:33,279 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 03:11:33 BoogieIcfgContainer [2020-10-24 15:11:33,279 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-24 15:11:33,284 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-24 15:11:33,284 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-24 15:11:33,288 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-24 15:11:33,288 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 03:11:32" (1/3) ... [2020-10-24 15:11:33,289 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d0271ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 03:11:33, skipping insertion in model container [2020-10-24 15:11:33,290 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:11:32" (2/3) ... [2020-10-24 15:11:33,290 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d0271ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 03:11:33, skipping insertion in model container [2020-10-24 15:11:33,290 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 03:11:33" (3/3) ... [2020-10-24 15:11:33,292 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_1232b.c [2020-10-24 15:11:33,306 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-24 15:11:33,313 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-24 15:11:33,333 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-24 15:11:33,381 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-24 15:11:33,381 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-24 15:11:33,382 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-24 15:11:33,382 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-24 15:11:33,382 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-24 15:11:33,382 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-24 15:11:33,382 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-24 15:11:33,383 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-24 15:11:33,404 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states. [2020-10-24 15:11:33,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-24 15:11:33,413 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 15:11:33,414 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 15:11:33,414 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 15:11:33,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 15:11:33,422 INFO L82 PathProgramCache]: Analyzing trace with hash -958075201, now seen corresponding path program 1 times [2020-10-24 15:11:33,434 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-24 15:11:33,435 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [541926280] [2020-10-24 15:11:33,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 15:11:33,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 15:11:33,652 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 15:11:33,653 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [541926280] [2020-10-24 15:11:33,654 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-24 15:11:33,655 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-24 15:11:33,656 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [838439699] [2020-10-24 15:11:33,662 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-24 15:11:33,663 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-24 15:11:33,680 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-24 15:11:33,682 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-24 15:11:33,684 INFO L87 Difference]: Start difference. First operand 33 states. Second operand 2 states. [2020-10-24 15:11:33,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 15:11:33,718 INFO L93 Difference]: Finished difference Result 63 states and 99 transitions. [2020-10-24 15:11:33,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-24 15:11:33,721 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2020-10-24 15:11:33,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 15:11:33,743 INFO L225 Difference]: With dead ends: 63 [2020-10-24 15:11:33,747 INFO L226 Difference]: Without dead ends: 29 [2020-10-24 15:11:33,753 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 [2020-10-24 15:11:33,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-10-24 15:11:33,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2020-10-24 15:11:33,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-10-24 15:11:33,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 40 transitions. [2020-10-24 15:11:33,805 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 40 transitions. Word has length 10 [2020-10-24 15:11:33,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 15:11:33,807 INFO L481 AbstractCegarLoop]: Abstraction has 29 states and 40 transitions. [2020-10-24 15:11:33,807 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-24 15:11:33,808 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 40 transitions. [2020-10-24 15:11:33,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-24 15:11:33,809 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 15:11:33,809 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 15:11:33,810 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-24 15:11:33,810 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 15:11:33,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 15:11:33,813 INFO L82 PathProgramCache]: Analyzing trace with hash 1001584898, now seen corresponding path program 1 times [2020-10-24 15:11:33,813 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-24 15:11:33,815 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1820464685] [2020-10-24 15:11:33,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 15:11:33,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 15:11:33,920 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 15:11:33,920 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1820464685] [2020-10-24 15:11:33,920 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-24 15:11:33,921 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-24 15:11:33,921 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1952377396] [2020-10-24 15:11:33,922 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-24 15:11:33,923 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-24 15:11:33,924 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-24 15:11:33,924 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-24 15:11:33,924 INFO L87 Difference]: Start difference. First operand 29 states and 40 transitions. Second operand 4 states. [2020-10-24 15:11:34,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 15:11:34,001 INFO L93 Difference]: Finished difference Result 53 states and 67 transitions. [2020-10-24 15:11:34,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-24 15:11:34,002 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-10-24 15:11:34,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 15:11:34,003 INFO L225 Difference]: With dead ends: 53 [2020-10-24 15:11:34,003 INFO L226 Difference]: Without dead ends: 44 [2020-10-24 15:11:34,005 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 [2020-10-24 15:11:34,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-10-24 15:11:34,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 31. [2020-10-24 15:11:34,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-10-24 15:11:34,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 42 transitions. [2020-10-24 15:11:34,013 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 42 transitions. Word has length 11 [2020-10-24 15:11:34,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 15:11:34,013 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 42 transitions. [2020-10-24 15:11:34,013 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-24 15:11:34,014 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 42 transitions. [2020-10-24 15:11:34,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-24 15:11:34,014 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 15:11:34,015 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 15:11:34,015 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-24 15:11:34,015 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 15:11:34,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 15:11:34,016 INFO L82 PathProgramCache]: Analyzing trace with hash 502201410, now seen corresponding path program 1 times [2020-10-24 15:11:34,017 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-24 15:11:34,017 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1535049521] [2020-10-24 15:11:34,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 15:11:34,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 15:11:34,077 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 15:11:34,078 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1535049521] [2020-10-24 15:11:34,078 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-24 15:11:34,078 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-24 15:11:34,078 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [58162649] [2020-10-24 15:11:34,079 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-24 15:11:34,079 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-24 15:11:34,080 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-24 15:11:34,081 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-24 15:11:34,081 INFO L87 Difference]: Start difference. First operand 31 states and 42 transitions. Second operand 4 states. [2020-10-24 15:11:34,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 15:11:34,142 INFO L93 Difference]: Finished difference Result 55 states and 69 transitions. [2020-10-24 15:11:34,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-24 15:11:34,143 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-10-24 15:11:34,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 15:11:34,144 INFO L225 Difference]: With dead ends: 55 [2020-10-24 15:11:34,145 INFO L226 Difference]: Without dead ends: 46 [2020-10-24 15:11:34,146 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 [2020-10-24 15:11:34,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-10-24 15:11:34,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 31. [2020-10-24 15:11:34,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-10-24 15:11:34,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 42 transitions. [2020-10-24 15:11:34,152 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 42 transitions. Word has length 12 [2020-10-24 15:11:34,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 15:11:34,153 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 42 transitions. [2020-10-24 15:11:34,153 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-24 15:11:34,153 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 42 transitions. [2020-10-24 15:11:34,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-24 15:11:34,154 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 15:11:34,154 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 15:11:34,154 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-24 15:11:34,155 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 15:11:34,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 15:11:34,155 INFO L82 PathProgramCache]: Analyzing trace with hash -1951233721, now seen corresponding path program 1 times [2020-10-24 15:11:34,156 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-24 15:11:34,156 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [770140575] [2020-10-24 15:11:34,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 15:11:34,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 15:11:34,318 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 15:11:34,318 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [770140575] [2020-10-24 15:11:34,318 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-24 15:11:34,318 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-24 15:11:34,319 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1874291939] [2020-10-24 15:11:34,319 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-24 15:11:34,319 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-24 15:11:34,320 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-24 15:11:34,320 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-24 15:11:34,321 INFO L87 Difference]: Start difference. First operand 31 states and 42 transitions. Second operand 4 states. [2020-10-24 15:11:34,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 15:11:34,448 INFO L93 Difference]: Finished difference Result 57 states and 71 transitions. [2020-10-24 15:11:34,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-24 15:11:34,449 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-10-24 15:11:34,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 15:11:34,450 INFO L225 Difference]: With dead ends: 57 [2020-10-24 15:11:34,450 INFO L226 Difference]: Without dead ends: 48 [2020-10-24 15:11:34,451 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-24 15:11:34,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-10-24 15:11:34,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 31. [2020-10-24 15:11:34,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-10-24 15:11:34,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 42 transitions. [2020-10-24 15:11:34,458 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 42 transitions. Word has length 13 [2020-10-24 15:11:34,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 15:11:34,458 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 42 transitions. [2020-10-24 15:11:34,458 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-24 15:11:34,459 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 42 transitions. [2020-10-24 15:11:34,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-24 15:11:34,460 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 15:11:34,460 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 15:11:34,460 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-24 15:11:34,460 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 15:11:34,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 15:11:34,461 INFO L82 PathProgramCache]: Analyzing trace with hash -555760345, now seen corresponding path program 1 times [2020-10-24 15:11:34,462 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-24 15:11:34,462 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [510616108] [2020-10-24 15:11:34,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 15:11:34,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 15:11:34,517 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 15:11:34,518 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [510616108] [2020-10-24 15:11:34,518 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-24 15:11:34,519 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-24 15:11:34,519 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1721471764] [2020-10-24 15:11:34,519 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-24 15:11:34,520 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-24 15:11:34,521 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-24 15:11:34,521 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-24 15:11:34,521 INFO L87 Difference]: Start difference. First operand 31 states and 42 transitions. Second operand 4 states. [2020-10-24 15:11:34,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 15:11:34,574 INFO L93 Difference]: Finished difference Result 55 states and 69 transitions. [2020-10-24 15:11:34,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-24 15:11:34,575 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2020-10-24 15:11:34,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 15:11:34,576 INFO L225 Difference]: With dead ends: 55 [2020-10-24 15:11:34,576 INFO L226 Difference]: Without dead ends: 46 [2020-10-24 15:11:34,578 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 [2020-10-24 15:11:34,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-10-24 15:11:34,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 31. [2020-10-24 15:11:34,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-10-24 15:11:34,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 42 transitions. [2020-10-24 15:11:34,584 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 42 transitions. Word has length 14 [2020-10-24 15:11:34,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 15:11:34,584 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 42 transitions. [2020-10-24 15:11:34,585 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-24 15:11:34,585 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 42 transitions. [2020-10-24 15:11:34,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-24 15:11:34,586 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 15:11:34,586 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 15:11:34,586 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-24 15:11:34,586 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 15:11:34,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 15:11:34,587 INFO L82 PathProgramCache]: Analyzing trace with hash 1219247017, now seen corresponding path program 1 times [2020-10-24 15:11:34,587 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-24 15:11:34,588 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [577205652] [2020-10-24 15:11:34,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 15:11:34,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-24 15:11:34,615 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-24 15:11:34,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-24 15:11:34,639 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-24 15:11:34,670 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-24 15:11:34,670 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-24 15:11:34,671 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-24 15:11:34,713 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 03:11:34 BoogieIcfgContainer [2020-10-24 15:11:34,713 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-24 15:11:34,714 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-24 15:11:34,714 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-24 15:11:34,715 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-24 15:11:34,715 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 03:11:33" (3/4) ... [2020-10-24 15:11:34,720 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-10-24 15:11:34,720 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-24 15:11:34,723 INFO L168 Benchmark]: Toolchain (without parser) took 2516.49 ms. Allocated memory was 41.9 MB in the beginning and 69.2 MB in the end (delta: 27.3 MB). Free memory was 18.9 MB in the beginning and 51.2 MB in the end (delta: -32.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-24 15:11:34,724 INFO L168 Benchmark]: CDTParser took 0.49 ms. Allocated memory is still 41.9 MB. Free memory is still 26.6 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-10-24 15:11:34,725 INFO L168 Benchmark]: CACSL2BoogieTranslator took 293.65 ms. Allocated memory is still 41.9 MB. Free memory was 18.3 MB in the beginning and 19.1 MB in the end (delta: -821.9 kB). Peak memory consumption was 5.5 MB. Max. memory is 16.1 GB. [2020-10-24 15:11:34,726 INFO L168 Benchmark]: Boogie Procedure Inliner took 53.57 ms. Allocated memory is still 41.9 MB. Free memory was 19.1 MB in the beginning and 17.3 MB in the end (delta: 1.8 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-24 15:11:34,727 INFO L168 Benchmark]: Boogie Preprocessor took 43.44 ms. Allocated memory was 41.9 MB in the beginning and 54.5 MB in the end (delta: 12.6 MB). Free memory was 17.2 MB in the beginning and 38.2 MB in the end (delta: -20.9 MB). Peak memory consumption was 2.9 MB. Max. memory is 16.1 GB. [2020-10-24 15:11:34,728 INFO L168 Benchmark]: RCFGBuilder took 674.10 ms. Allocated memory is still 54.5 MB. Free memory was 38.0 MB in the beginning and 32.3 MB in the end (delta: 5.7 MB). Peak memory consumption was 15.7 MB. Max. memory is 16.1 GB. [2020-10-24 15:11:34,729 INFO L168 Benchmark]: TraceAbstraction took 1429.66 ms. Allocated memory was 54.5 MB in the beginning and 69.2 MB in the end (delta: 14.7 MB). Free memory was 31.8 MB in the beginning and 51.6 MB in the end (delta: -19.8 MB). Peak memory consumption was 15.5 MB. Max. memory is 16.1 GB. [2020-10-24 15:11:34,730 INFO L168 Benchmark]: Witness Printer took 6.16 ms. Allocated memory is still 69.2 MB. Free memory was 51.6 MB in the beginning and 51.2 MB in the end (delta: 438.8 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-24 15:11:34,735 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.49 ms. Allocated memory is still 41.9 MB. Free memory is still 26.6 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 293.65 ms. Allocated memory is still 41.9 MB. Free memory was 18.3 MB in the beginning and 19.1 MB in the end (delta: -821.9 kB). Peak memory consumption was 5.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 53.57 ms. Allocated memory is still 41.9 MB. Free memory was 19.1 MB in the beginning and 17.3 MB in the end (delta: 1.8 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 43.44 ms. Allocated memory was 41.9 MB in the beginning and 54.5 MB in the end (delta: 12.6 MB). Free memory was 17.2 MB in the beginning and 38.2 MB in the end (delta: -20.9 MB). Peak memory consumption was 2.9 MB. Max. memory is 16.1 GB. * RCFGBuilder took 674.10 ms. Allocated memory is still 54.5 MB. Free memory was 38.0 MB in the beginning and 32.3 MB in the end (delta: 5.7 MB). Peak memory consumption was 15.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1429.66 ms. Allocated memory was 54.5 MB in the beginning and 69.2 MB in the end (delta: 14.7 MB). Free memory was 31.8 MB in the beginning and 51.6 MB in the end (delta: -19.8 MB). Peak memory consumption was 15.5 MB. Max. memory is 16.1 GB. * Witness Printer took 6.16 ms. Allocated memory is still 69.2 MB. Free memory was 51.6 MB in the beginning and 51.2 MB in the end (delta: 438.8 kB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 3]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someUnaryFLOAT_SMToperation at line 66, overapproximation of someBinaryFLOAT_SMTComparisonOperation at line 71. Possible FailurePath: [L66] float x = -0.0f; [L67] float y = 0.0f; [L15] __uint32_t w; [L18] ieee_float_shape_type gf_u; [L19] gf_u.value = (x) [L20] EXPR gf_u.word [L20] (w) = gf_u.word [L23] COND FALSE !(w == 0x00000000 || w == 0x80000000) [L25-L26] COND FALSE !((w >= 0x00800000 && w <= 0x7f7fffff) || (w >= 0x80800000 && w <= 0xff7fffff)) [L28-L29] COND FALSE !((w >= 0x00000001 && w <= 0x007fffff) || (w >= 0x80000001 && w <= 0x807fffff)) [L31] COND FALSE !(w == 0x7f800000 || w == 0xff800000) [L34] return 0; [L38] COND TRUE __fpclassify_float(x) == 0 [L39] return y; [L68] float res = fmin_float(x, y); [L71] EXPR res == -0.0f && __signbit_float(res) == 1 [L71] COND TRUE !(res == -0.0f && __signbit_float(res) == 1) [L3] __assert_fail("0", "float_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: 1.2s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 251 SDtfs, 64 SDslu, 298 SDs, 0 SdLazy, 84 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 22 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=33occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 60 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s 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-ee8e70e [2020-10-24 15:11:37,404 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-24 15:11:37,408 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-24 15:11:37,448 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-24 15:11:37,449 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-24 15:11:37,451 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-24 15:11:37,454 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-24 15:11:37,457 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-24 15:11:37,460 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-24 15:11:37,462 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-24 15:11:37,464 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-24 15:11:37,466 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-24 15:11:37,467 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-24 15:11:37,469 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-24 15:11:37,471 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-24 15:11:37,474 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-24 15:11:37,475 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-24 15:11:37,490 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-24 15:11:37,493 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-24 15:11:37,496 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-24 15:11:37,499 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-24 15:11:37,502 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-24 15:11:37,504 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-24 15:11:37,506 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-24 15:11:37,510 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-24 15:11:37,511 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-24 15:11:37,512 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-24 15:11:37,513 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-24 15:11:37,515 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-24 15:11:37,517 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-24 15:11:37,517 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-24 15:11:37,519 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-24 15:11:37,521 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-24 15:11:37,522 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-24 15:11:37,524 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-24 15:11:37,525 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-24 15:11:37,527 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-24 15:11:37,527 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-24 15:11:37,528 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-24 15:11:37,530 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-24 15:11:37,531 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-24 15:11:37,533 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2020-10-24 15:11:37,569 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-24 15:11:37,570 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-24 15:11:37,575 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-24 15:11:37,576 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-24 15:11:37,577 INFO L138 SettingsManager]: * Use SBE=true [2020-10-24 15:11:37,577 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-24 15:11:37,578 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-24 15:11:37,580 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-24 15:11:37,582 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-24 15:11:37,582 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-24 15:11:37,584 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-24 15:11:37,585 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-24 15:11:37,585 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-10-24 15:11:37,585 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-10-24 15:11:37,586 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-24 15:11:37,586 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-24 15:11:37,586 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-24 15:11:37,587 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-24 15:11:37,587 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-24 15:11:37,587 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-24 15:11:37,588 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-24 15:11:37,588 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-24 15:11:37,588 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-24 15:11:37,589 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-24 15:11:37,589 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-24 15:11:37,589 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-24 15:11:37,590 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2020-10-24 15:11:37,590 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-10-24 15:11:37,590 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-24 15:11:37,591 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-24 15:11:37,591 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-24 15:11:37,591 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:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 38561929b5142acce65cab4da64e7c4ae5f17524 [2020-10-24 15:11:38,157 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-24 15:11:38,188 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-24 15:11:38,191 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-24 15:11:38,193 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-24 15:11:38,194 INFO L275 PluginConnector]: CDTParser initialized [2020-10-24 15:11:38,195 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-newlib/float_req_bl_1232b.c [2020-10-24 15:11:38,284 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/39aa9cf98/0ecd8d3a0ffd4570b8cb269d99214ebf/FLAGaa03630ee [2020-10-24 15:11:38,967 INFO L306 CDTParser]: Found 1 translation units. [2020-10-24 15:11:38,968 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/releaseScripts/default/sv-benchmarks/c/float-newlib/float_req_bl_1232b.c [2020-10-24 15:11:38,977 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/39aa9cf98/0ecd8d3a0ffd4570b8cb269d99214ebf/FLAGaa03630ee [2020-10-24 15:11:39,304 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/39aa9cf98/0ecd8d3a0ffd4570b8cb269d99214ebf [2020-10-24 15:11:39,310 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-24 15:11:39,325 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-24 15:11:39,331 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-24 15:11:39,332 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-24 15:11:39,338 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-24 15:11:39,340 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 03:11:39" (1/1) ... [2020-10-24 15:11:39,345 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4c3d349a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:11:39, skipping insertion in model container [2020-10-24 15:11:39,346 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 03:11:39" (1/1) ... [2020-10-24 15:11:39,359 INFO L146 MainTranslator]: Starting translation in SV-COMP mode [2020-10-24 15:11:39,390 INFO L179 MainTranslator]: Built tables and reachable declarations [2020-10-24 15:11:39,690 INFO L211 PostProcessor]: Analyzing one entry point: main [2020-10-24 15:11:39,722 INFO L212 MainTranslator]: Completed pre-run [2020-10-24 15:11:39,757 INFO L211 PostProcessor]: Analyzing one entry point: main [2020-10-24 15:11:39,787 INFO L217 MainTranslator]: Completed translation [2020-10-24 15:11:39,795 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:11:39 WrapperNode [2020-10-24 15:11:39,795 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-24 15:11:39,797 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-24 15:11:39,798 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-24 15:11:39,798 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-24 15:11:39,810 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:11:39" (1/1) ... [2020-10-24 15:11:39,828 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:11:39" (1/1) ... [2020-10-24 15:11:39,864 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-24 15:11:39,865 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-24 15:11:39,866 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-24 15:11:39,866 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-24 15:11:39,879 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:11:39" (1/1) ... [2020-10-24 15:11:39,879 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:11:39" (1/1) ... [2020-10-24 15:11:39,885 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:11:39" (1/1) ... [2020-10-24 15:11:39,886 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:11:39" (1/1) ... [2020-10-24 15:11:39,899 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:11:39" (1/1) ... [2020-10-24 15:11:39,907 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:11:39" (1/1) ... [2020-10-24 15:11:39,911 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:11:39" (1/1) ... [2020-10-24 15:11:39,917 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-24 15:11:39,919 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-24 15:11:39,919 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-24 15:11:39,919 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-24 15:11:39,921 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:11:39" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/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 [2020-10-24 15:11:40,024 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-10-24 15:11:40,025 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-24 15:11:40,025 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2020-10-24 15:11:40,025 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-24 15:11:40,026 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-24 15:11:40,026 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2020-10-24 15:11:40,026 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.float_to_bitvec_FLOAT [2020-10-24 15:11:40,026 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-24 15:11:40,528 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-24 15:11:40,529 INFO L298 CfgBuilder]: Removed 20 assume(true) statements. [2020-10-24 15:11:40,531 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 03:11:40 BoogieIcfgContainer [2020-10-24 15:11:40,531 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-24 15:11:40,534 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-24 15:11:40,534 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-24 15:11:40,538 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-24 15:11:40,538 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 03:11:39" (1/3) ... [2020-10-24 15:11:40,540 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e228c87 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 03:11:40, skipping insertion in model container [2020-10-24 15:11:40,540 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:11:39" (2/3) ... [2020-10-24 15:11:40,540 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e228c87 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 03:11:40, skipping insertion in model container [2020-10-24 15:11:40,541 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 03:11:40" (3/3) ... [2020-10-24 15:11:40,543 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_1232b.c [2020-10-24 15:11:40,558 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-24 15:11:40,565 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-24 15:11:40,580 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-24 15:11:40,627 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-24 15:11:40,628 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-24 15:11:40,628 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-24 15:11:40,629 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-24 15:11:40,629 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-24 15:11:40,629 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-24 15:11:40,629 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-24 15:11:40,630 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-24 15:11:40,647 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states. [2020-10-24 15:11:40,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-24 15:11:40,654 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 15:11:40,655 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 15:11:40,656 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 15:11:40,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 15:11:40,663 INFO L82 PathProgramCache]: Analyzing trace with hash -958075201, now seen corresponding path program 1 times [2020-10-24 15:11:40,678 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-24 15:11:40,679 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [810002825] [2020-10-24 15:11:40,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/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 [2020-10-24 15:11:40,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 15:11:40,826 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 1 conjunts are in the unsatisfiable core [2020-10-24 15:11:40,832 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-24 15:11:40,851 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 15:11:40,851 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-24 15:11:40,856 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 15:11:40,857 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [810002825] [2020-10-24 15:11:40,858 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-24 15:11:40,859 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-10-24 15:11:40,860 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1945903263] [2020-10-24 15:11:40,865 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-24 15:11:40,865 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-24 15:11:40,882 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-24 15:11:40,883 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-24 15:11:40,886 INFO L87 Difference]: Start difference. First operand 33 states. Second operand 2 states. [2020-10-24 15:11:40,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 15:11:40,910 INFO L93 Difference]: Finished difference Result 63 states and 99 transitions. [2020-10-24 15:11:40,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-24 15:11:40,912 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2020-10-24 15:11:40,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 15:11:40,924 INFO L225 Difference]: With dead ends: 63 [2020-10-24 15:11:40,925 INFO L226 Difference]: Without dead ends: 29 [2020-10-24 15:11:40,928 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 [2020-10-24 15:11:40,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-10-24 15:11:40,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2020-10-24 15:11:40,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-10-24 15:11:40,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 40 transitions. [2020-10-24 15:11:40,973 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 40 transitions. Word has length 10 [2020-10-24 15:11:40,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 15:11:40,973 INFO L481 AbstractCegarLoop]: Abstraction has 29 states and 40 transitions. [2020-10-24 15:11:40,974 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-24 15:11:40,974 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 40 transitions. [2020-10-24 15:11:40,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-24 15:11:40,975 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 15:11:40,975 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 15:11:41,191 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-10-24 15:11:41,192 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 15:11:41,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 15:11:41,194 INFO L82 PathProgramCache]: Analyzing trace with hash 1001584898, now seen corresponding path program 1 times [2020-10-24 15:11:41,195 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-24 15:11:41,198 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2147073606] [2020-10-24 15:11:41,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/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 [2020-10-24 15:11:41,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 15:11:41,302 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 3 conjunts are in the unsatisfiable core [2020-10-24 15:11:41,304 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-24 15:11:41,340 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 15:11:41,341 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-24 15:11:41,364 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 15:11:41,364 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2147073606] [2020-10-24 15:11:41,364 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-24 15:11:41,365 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2020-10-24 15:11:41,365 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1969319711] [2020-10-24 15:11:41,367 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-24 15:11:41,367 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-24 15:11:41,368 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-24 15:11:41,369 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-24 15:11:41,369 INFO L87 Difference]: Start difference. First operand 29 states and 40 transitions. Second operand 6 states. [2020-10-24 15:11:41,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 15:11:41,475 INFO L93 Difference]: Finished difference Result 68 states and 85 transitions. [2020-10-24 15:11:41,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-24 15:11:41,476 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 11 [2020-10-24 15:11:41,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 15:11:41,477 INFO L225 Difference]: With dead ends: 68 [2020-10-24 15:11:41,477 INFO L226 Difference]: Without dead ends: 59 [2020-10-24 15:11:41,479 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 [2020-10-24 15:11:41,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2020-10-24 15:11:41,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 31. [2020-10-24 15:11:41,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-10-24 15:11:41,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 42 transitions. [2020-10-24 15:11:41,488 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 42 transitions. Word has length 11 [2020-10-24 15:11:41,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 15:11:41,488 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 42 transitions. [2020-10-24 15:11:41,488 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-24 15:11:41,489 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 42 transitions. [2020-10-24 15:11:41,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-24 15:11:41,494 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 15:11:41,495 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 15:11:41,709 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-10-24 15:11:41,710 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 15:11:41,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 15:11:41,712 INFO L82 PathProgramCache]: Analyzing trace with hash 1219247017, now seen corresponding path program 1 times [2020-10-24 15:11:41,713 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-24 15:11:41,713 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [26893807] [2020-10-24 15:11:41,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/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 [2020-10-24 15:11:41,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 15:11:41,790 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-24 15:11:41,793 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-24 15:11:41,881 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 15:11:41,882 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-24 15:11:41,929 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 15:11:41,929 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [26893807] [2020-10-24 15:11:41,930 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-24 15:11:41,930 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2020-10-24 15:11:41,930 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1684378927] [2020-10-24 15:11:41,931 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-24 15:11:41,931 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-24 15:11:41,932 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-24 15:11:41,932 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-24 15:11:41,933 INFO L87 Difference]: Start difference. First operand 31 states and 42 transitions. Second operand 6 states. [2020-10-24 15:11:42,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 15:11:42,047 INFO L93 Difference]: Finished difference Result 52 states and 69 transitions. [2020-10-24 15:11:42,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-24 15:11:42,048 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 14 [2020-10-24 15:11:42,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 15:11:42,049 INFO L225 Difference]: With dead ends: 52 [2020-10-24 15:11:42,049 INFO L226 Difference]: Without dead ends: 26 [2020-10-24 15:11:42,050 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 2 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2020-10-24 15:11:42,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-10-24 15:11:42,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2020-10-24 15:11:42,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-10-24 15:11:42,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 32 transitions. [2020-10-24 15:11:42,057 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 32 transitions. Word has length 14 [2020-10-24 15:11:42,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 15:11:42,057 INFO L481 AbstractCegarLoop]: Abstraction has 26 states and 32 transitions. [2020-10-24 15:11:42,057 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-24 15:11:42,057 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 32 transitions. [2020-10-24 15:11:42,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-24 15:11:42,059 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 15:11:42,059 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 15:11:42,276 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-10-24 15:11:42,277 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 15:11:42,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 15:11:42,278 INFO L82 PathProgramCache]: Analyzing trace with hash 1012446717, now seen corresponding path program 1 times [2020-10-24 15:11:42,278 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-24 15:11:42,279 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [849205308] [2020-10-24 15:11:42,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/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 [2020-10-24 15:11:42,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 15:11:42,372 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 3 conjunts are in the unsatisfiable core [2020-10-24 15:11:42,374 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-24 15:11:42,391 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 15:11:42,391 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-24 15:11:42,410 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 15:11:42,410 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [849205308] [2020-10-24 15:11:42,411 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-24 15:11:42,411 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2020-10-24 15:11:42,411 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2090730550] [2020-10-24 15:11:42,411 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-24 15:11:42,412 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-24 15:11:42,412 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-24 15:11:42,413 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-24 15:11:42,413 INFO L87 Difference]: Start difference. First operand 26 states and 32 transitions. Second operand 6 states. [2020-10-24 15:11:42,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 15:11:42,482 INFO L93 Difference]: Finished difference Result 61 states and 71 transitions. [2020-10-24 15:11:42,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-24 15:11:42,483 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 16 [2020-10-24 15:11:42,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 15:11:42,484 INFO L225 Difference]: With dead ends: 61 [2020-10-24 15:11:42,484 INFO L226 Difference]: Without dead ends: 52 [2020-10-24 15:11:42,485 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 [2020-10-24 15:11:42,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-10-24 15:11:42,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 28. [2020-10-24 15:11:42,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-10-24 15:11:42,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 34 transitions. [2020-10-24 15:11:42,492 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 34 transitions. Word has length 16 [2020-10-24 15:11:42,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 15:11:42,492 INFO L481 AbstractCegarLoop]: Abstraction has 28 states and 34 transitions. [2020-10-24 15:11:42,492 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-24 15:11:42,493 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 34 transitions. [2020-10-24 15:11:42,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-24 15:11:42,494 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 15:11:42,494 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 15:11:42,697 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2020-10-24 15:11:42,698 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 15:11:42,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 15:11:42,700 INFO L82 PathProgramCache]: Analyzing trace with hash -414082333, now seen corresponding path program 1 times [2020-10-24 15:11:42,701 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-24 15:11:42,701 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1439199510] [2020-10-24 15:11:42,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/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 [2020-10-24 15:11:42,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 15:11:42,799 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-24 15:11:42,801 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-24 15:11:42,893 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 15:11:42,896 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-24 15:11:42,945 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 15:11:42,946 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1439199510] [2020-10-24 15:11:42,946 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-24 15:11:42,946 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2020-10-24 15:11:42,946 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [939365924] [2020-10-24 15:11:42,947 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-24 15:11:42,947 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-24 15:11:42,947 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-24 15:11:42,948 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-24 15:11:42,949 INFO L87 Difference]: Start difference. First operand 28 states and 34 transitions. Second operand 4 states. [2020-10-24 15:11:42,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 15:11:42,975 INFO L93 Difference]: Finished difference Result 38 states and 44 transitions. [2020-10-24 15:11:42,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-24 15:11:42,976 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 18 [2020-10-24 15:11:42,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 15:11:42,977 INFO L225 Difference]: With dead ends: 38 [2020-10-24 15:11:42,977 INFO L226 Difference]: Without dead ends: 28 [2020-10-24 15:11:42,978 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-24 15:11:42,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-10-24 15:11:42,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2020-10-24 15:11:42,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-10-24 15:11:42,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 33 transitions. [2020-10-24 15:11:42,985 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 33 transitions. Word has length 18 [2020-10-24 15:11:42,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 15:11:42,986 INFO L481 AbstractCegarLoop]: Abstraction has 28 states and 33 transitions. [2020-10-24 15:11:42,987 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-24 15:11:42,987 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 33 transitions. [2020-10-24 15:11:42,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-24 15:11:42,990 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 15:11:42,991 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 15:11:43,204 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 mathsat -unsat_core_generation=3 [2020-10-24 15:11:43,204 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 15:11:43,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 15:11:43,206 INFO L82 PathProgramCache]: Analyzing trace with hash -356824031, now seen corresponding path program 1 times [2020-10-24 15:11:43,207 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-24 15:11:43,207 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [249815977] [2020-10-24 15:11:43,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/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 [2020-10-24 15:11:43,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 15:11:43,311 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-24 15:11:43,313 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-24 15:11:43,369 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-24 15:11:43,393 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 15:11:43,393 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-24 15:11:43,576 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 15:11:43,576 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [249815977] [2020-10-24 15:11:43,577 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-24 15:11:43,577 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 9 [2020-10-24 15:11:43,577 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [222447350] [2020-10-24 15:11:43,578 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-24 15:11:43,578 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-24 15:11:43,579 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-24 15:11:43,579 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-10-24 15:11:43,579 INFO L87 Difference]: Start difference. First operand 28 states and 33 transitions. Second operand 9 states. [2020-10-24 15:11:43,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 15:11:43,795 INFO L93 Difference]: Finished difference Result 40 states and 44 transitions. [2020-10-24 15:11:43,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-24 15:11:43,795 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 18 [2020-10-24 15:11:43,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 15:11:43,796 INFO L225 Difference]: With dead ends: 40 [2020-10-24 15:11:43,797 INFO L226 Difference]: Without dead ends: 37 [2020-10-24 15:11:43,798 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2020-10-24 15:11:43,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-10-24 15:11:43,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 30. [2020-10-24 15:11:43,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-10-24 15:11:43,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 35 transitions. [2020-10-24 15:11:43,806 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 35 transitions. Word has length 18 [2020-10-24 15:11:43,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 15:11:43,807 INFO L481 AbstractCegarLoop]: Abstraction has 30 states and 35 transitions. [2020-10-24 15:11:43,807 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-24 15:11:43,808 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 35 transitions. [2020-10-24 15:11:43,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-24 15:11:43,809 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 15:11:43,809 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 15:11:44,023 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 mathsat -unsat_core_generation=3 [2020-10-24 15:11:44,023 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 15:11:44,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 15:11:44,024 INFO L82 PathProgramCache]: Analyzing trace with hash -208358251, now seen corresponding path program 1 times [2020-10-24 15:11:44,025 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-24 15:11:44,026 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1967360559] [2020-10-24 15:11:44,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/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 [2020-10-24 15:11:44,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 15:11:44,127 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-24 15:11:44,128 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-24 15:11:44,167 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 15:11:44,167 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-24 15:11:44,185 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 15:11:44,186 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1967360559] [2020-10-24 15:11:44,187 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-24 15:11:44,187 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2020-10-24 15:11:44,187 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [480160169] [2020-10-24 15:11:44,188 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-24 15:11:44,188 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-24 15:11:44,189 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-24 15:11:44,190 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-24 15:11:44,190 INFO L87 Difference]: Start difference. First operand 30 states and 35 transitions. Second operand 5 states. [2020-10-24 15:11:44,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 15:11:44,267 INFO L93 Difference]: Finished difference Result 43 states and 47 transitions. [2020-10-24 15:11:44,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-24 15:11:44,269 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 19 [2020-10-24 15:11:44,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 15:11:44,270 INFO L225 Difference]: With dead ends: 43 [2020-10-24 15:11:44,270 INFO L226 Difference]: Without dead ends: 23 [2020-10-24 15:11:44,271 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 32 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-24 15:11:44,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-10-24 15:11:44,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2020-10-24 15:11:44,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-10-24 15:11:44,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 22 transitions. [2020-10-24 15:11:44,279 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 22 transitions. Word has length 19 [2020-10-24 15:11:44,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 15:11:44,279 INFO L481 AbstractCegarLoop]: Abstraction has 23 states and 22 transitions. [2020-10-24 15:11:44,279 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-24 15:11:44,280 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 22 transitions. [2020-10-24 15:11:44,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-24 15:11:44,281 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 15:11:44,281 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] [2020-10-24 15:11:44,487 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 mathsat -unsat_core_generation=3 [2020-10-24 15:11:44,488 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 15:11:44,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 15:11:44,489 INFO L82 PathProgramCache]: Analyzing trace with hash -1524231306, now seen corresponding path program 1 times [2020-10-24 15:11:44,490 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-24 15:11:44,491 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1068610291] [2020-10-24 15:11:44,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/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 [2020-10-24 15:11:44,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-24 15:11:44,785 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-24 15:11:44,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-24 15:11:44,953 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-24 15:11:45,087 INFO L173 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2020-10-24 15:11:45,088 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-24 15:11:45,301 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 mathsat -unsat_core_generation=3 [2020-10-24 15:11:45,347 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 03:11:45 BoogieIcfgContainer [2020-10-24 15:11:45,348 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-24 15:11:45,349 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-24 15:11:45,349 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-24 15:11:45,350 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-24 15:11:45,351 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 03:11:40" (3/4) ... [2020-10-24 15:11:45,354 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-10-24 15:11:45,422 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-24 15:11:45,422 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-24 15:11:45,426 INFO L168 Benchmark]: Toolchain (without parser) took 6110.01 ms. Allocated memory was 54.5 MB in the beginning and 67.1 MB in the end (delta: 12.6 MB). Free memory was 38.2 MB in the beginning and 39.9 MB in the end (delta: -1.7 MB). Peak memory consumption was 12.2 MB. Max. memory is 16.1 GB. [2020-10-24 15:11:45,429 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 37.7 MB. Free memory was 18.0 MB in the beginning and 18.0 MB in the end (delta: 56.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-24 15:11:45,431 INFO L168 Benchmark]: CACSL2BoogieTranslator took 465.08 ms. Allocated memory is still 54.5 MB. Free memory was 37.6 MB in the beginning and 39.7 MB in the end (delta: -2.1 MB). Peak memory consumption was 16.0 MB. Max. memory is 16.1 GB. [2020-10-24 15:11:45,432 INFO L168 Benchmark]: Boogie Procedure Inliner took 66.80 ms. Allocated memory is still 54.5 MB. Free memory was 39.7 MB in the beginning and 37.8 MB in the end (delta: 1.9 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-24 15:11:45,434 INFO L168 Benchmark]: Boogie Preprocessor took 52.42 ms. Allocated memory is still 54.5 MB. Free memory was 37.8 MB in the beginning and 36.1 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-24 15:11:45,438 INFO L168 Benchmark]: RCFGBuilder took 612.93 ms. Allocated memory is still 54.5 MB. Free memory was 36.1 MB in the beginning and 30.1 MB in the end (delta: 6.0 MB). Peak memory consumption was 13.6 MB. Max. memory is 16.1 GB. [2020-10-24 15:11:45,440 INFO L168 Benchmark]: TraceAbstraction took 4814.43 ms. Allocated memory was 54.5 MB in the beginning and 67.1 MB in the end (delta: 12.6 MB). Free memory was 29.6 MB in the beginning and 42.6 MB in the end (delta: -13.0 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-24 15:11:45,442 INFO L168 Benchmark]: Witness Printer took 73.86 ms. Allocated memory is still 67.1 MB. Free memory was 42.0 MB in the beginning and 39.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-24 15:11:45,449 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 37.7 MB. Free memory was 18.0 MB in the beginning and 18.0 MB in the end (delta: 56.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 465.08 ms. Allocated memory is still 54.5 MB. Free memory was 37.6 MB in the beginning and 39.7 MB in the end (delta: -2.1 MB). Peak memory consumption was 16.0 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 66.80 ms. Allocated memory is still 54.5 MB. Free memory was 39.7 MB in the beginning and 37.8 MB in the end (delta: 1.9 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 52.42 ms. Allocated memory is still 54.5 MB. Free memory was 37.8 MB in the beginning and 36.1 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 612.93 ms. Allocated memory is still 54.5 MB. Free memory was 36.1 MB in the beginning and 30.1 MB in the end (delta: 6.0 MB). Peak memory consumption was 13.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 4814.43 ms. Allocated memory was 54.5 MB in the beginning and 67.1 MB in the end (delta: 12.6 MB). Free memory was 29.6 MB in the beginning and 42.6 MB in the end (delta: -13.0 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 73.86 ms. Allocated memory is still 67.1 MB. Free memory was 42.0 MB in the beginning and 39.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 3]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L66] EXPR 0.0f [L66] EXPR -0.0f [L66] float x = -0.0f; [L67] EXPR 0.0f [L67] float y = 0.0f; [L15] __uint32_t w; [L18] ieee_float_shape_type gf_u; [L19] gf_u.value = (x) [L20] EXPR gf_u.word [L20] (w) = gf_u.word [L23] COND TRUE w == 0x00000000 || w == 0x80000000 [L24] return 2; [L38] COND FALSE !(__fpclassify_float(x) == 0) [L15] __uint32_t w; [L18] ieee_float_shape_type gf_u; [L19] gf_u.value = (x) [L20] EXPR gf_u.word [L20] (w) = gf_u.word [L23] COND TRUE w == 0x00000000 || w == 0x80000000 [L24] return 2; [L40] COND FALSE !(__fpclassify_float(y) == 0) [L43] EXPR x < y ? x : y [L43] return x < y ? x : y; [L68] float res = fmin_float(x, y); [L71] EXPR 0.0f [L71] EXPR -0.0f [L71] EXPR res == -0.0f && __signbit_float(res) == 1 [L47] __uint32_t w; [L50] ieee_float_shape_type gf_u; [L51] gf_u.value = (x) [L52] EXPR gf_u.word [L52] (w) = gf_u.word [L55] return (w & 0x80000000) != 0; [L71] EXPR res == -0.0f && __signbit_float(res) == 1 [L71] COND TRUE !(res == -0.0f && __signbit_float(res) == 1) [L3] __assert_fail("0", "float_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: 4.6s, OverallIterations: 8, TraceHistogramMax: 1, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 222 SDtfs, 205 SDslu, 343 SDs, 0 SdLazy, 106 SolverSat, 18 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 210 GetRequests, 173 SyntacticMatches, 2 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 2 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.6s 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, 59 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 128 NumberOfCodeBlocks, 128 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 198 ConstructedInterpolants, 29 QuantifiedInterpolants, 31174 SizeOfPredicates, 27 NumberOfNonLiveVariables, 424 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...