./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/float-benchs/zonotope_tight.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/float-benchs/zonotope_tight.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/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 92269a31b3f4041d2f8501c63b7af13f5ed1a7b5 ............................................................................................................................................................................................................................................................................ Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/float-benchs/zonotope_tight.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/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 92269a31b3f4041d2f8501c63b7af13f5ed1a7b5 ......................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-10-24 22:48:10,441 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-24 22:48:10,443 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-24 22:48:10,481 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-24 22:48:10,482 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-24 22:48:10,484 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-24 22:48:10,485 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-24 22:48:10,488 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-24 22:48:10,490 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-24 22:48:10,491 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-24 22:48:10,492 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-24 22:48:10,493 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-24 22:48:10,494 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-24 22:48:10,495 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-24 22:48:10,496 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-24 22:48:10,498 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-24 22:48:10,499 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-24 22:48:10,500 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-24 22:48:10,502 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-24 22:48:10,504 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-24 22:48:10,506 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-24 22:48:10,507 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-24 22:48:10,508 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-24 22:48:10,509 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-24 22:48:10,512 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-24 22:48:10,513 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-24 22:48:10,513 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-24 22:48:10,514 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-24 22:48:10,515 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-24 22:48:10,518 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-24 22:48:10,521 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-24 22:48:10,522 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-24 22:48:10,523 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-24 22:48:10,523 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-24 22:48:10,526 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-24 22:48:10,527 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-24 22:48:10,527 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-24 22:48:10,528 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-24 22:48:10,528 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-24 22:48:10,529 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-24 22:48:10,530 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-24 22:48:10,531 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-24 22:48:10,558 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-24 22:48:10,558 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-24 22:48:10,560 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-24 22:48:10,560 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-24 22:48:10,560 INFO L138 SettingsManager]: * Use SBE=true [2020-10-24 22:48:10,561 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-24 22:48:10,561 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-24 22:48:10,561 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-24 22:48:10,561 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-24 22:48:10,562 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-24 22:48:10,562 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-24 22:48:10,562 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-24 22:48:10,562 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-24 22:48:10,563 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-24 22:48:10,563 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-24 22:48:10,563 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-24 22:48:10,564 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-24 22:48:10,564 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-24 22:48:10,564 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-24 22:48:10,564 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-24 22:48:10,565 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-24 22:48:10,565 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-24 22:48:10,565 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-24 22:48:10,566 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-24 22:48:10,566 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-24 22:48:10,566 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-24 22:48:10,566 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-24 22:48:10,567 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-24 22:48:10,567 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-24 22:48:10,567 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/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 92269a31b3f4041d2f8501c63b7af13f5ed1a7b5 [2020-10-24 22:48:11,012 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-24 22:48:11,041 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-24 22:48:11,044 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-24 22:48:11,046 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-24 22:48:11,046 INFO L275 PluginConnector]: CDTParser initialized [2020-10-24 22:48:11,047 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-benchs/zonotope_tight.c [2020-10-24 22:48:11,134 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a7ad31f6c/cb9873ba6da6472cba0baedfbdcb4f62/FLAG5a2d302c2 [2020-10-24 22:48:11,776 INFO L306 CDTParser]: Found 1 translation units. [2020-10-24 22:48:11,776 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-benchs/zonotope_tight.c [2020-10-24 22:48:11,784 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a7ad31f6c/cb9873ba6da6472cba0baedfbdcb4f62/FLAG5a2d302c2 [2020-10-24 22:48:12,136 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a7ad31f6c/cb9873ba6da6472cba0baedfbdcb4f62 [2020-10-24 22:48:12,139 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-24 22:48:12,147 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-24 22:48:12,149 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-24 22:48:12,149 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-24 22:48:12,154 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-24 22:48:12,155 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 10:48:12" (1/1) ... [2020-10-24 22:48:12,158 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@562806a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:48:12, skipping insertion in model container [2020-10-24 22:48:12,159 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 10:48:12" (1/1) ... [2020-10-24 22:48:12,167 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-24 22:48:12,181 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-24 22:48:12,392 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-24 22:48:12,403 INFO L203 MainTranslator]: Completed pre-run [2020-10-24 22:48:12,420 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-24 22:48:12,436 INFO L208 MainTranslator]: Completed translation [2020-10-24 22:48:12,437 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:48:12 WrapperNode [2020-10-24 22:48:12,437 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-24 22:48:12,439 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-24 22:48:12,439 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-24 22:48:12,439 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-24 22:48:12,447 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:48:12" (1/1) ... [2020-10-24 22:48:12,456 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:48:12" (1/1) ... [2020-10-24 22:48:12,474 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-24 22:48:12,476 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-24 22:48:12,476 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-24 22:48:12,476 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-24 22:48:12,485 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:48:12" (1/1) ... [2020-10-24 22:48:12,485 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:48:12" (1/1) ... [2020-10-24 22:48:12,487 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:48:12" (1/1) ... [2020-10-24 22:48:12,487 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:48:12" (1/1) ... [2020-10-24 22:48:12,492 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:48:12" (1/1) ... [2020-10-24 22:48:12,494 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:48:12" (1/1) ... [2020-10-24 22:48:12,495 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:48:12" (1/1) ... [2020-10-24 22:48:12,500 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-24 22:48:12,501 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-24 22:48:12,502 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-24 22:48:12,502 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-24 22:48:12,503 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:48:12" (1/1) ... No working directory specified, using /storage/repos/ultimate/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 22:48:12,573 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-24 22:48:12,574 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-24 22:48:12,574 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-24 22:48:12,574 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-24 22:48:12,784 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-24 22:48:12,784 INFO L298 CfgBuilder]: Removed 10 assume(true) statements. [2020-10-24 22:48:12,786 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 10:48:12 BoogieIcfgContainer [2020-10-24 22:48:12,786 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-24 22:48:12,791 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-24 22:48:12,792 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-24 22:48:12,798 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-24 22:48:12,802 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 10:48:12" (1/3) ... [2020-10-24 22:48:12,803 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54d52432 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 10:48:12, skipping insertion in model container [2020-10-24 22:48:12,804 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:48:12" (2/3) ... [2020-10-24 22:48:12,804 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54d52432 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 10:48:12, skipping insertion in model container [2020-10-24 22:48:12,804 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 10:48:12" (3/3) ... [2020-10-24 22:48:12,809 INFO L111 eAbstractionObserver]: Analyzing ICFG zonotope_tight.c [2020-10-24 22:48:12,840 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-24 22:48:12,851 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-24 22:48:12,891 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-24 22:48:12,932 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-24 22:48:12,932 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-24 22:48:12,933 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-24 22:48:12,933 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-24 22:48:12,933 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-24 22:48:12,934 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-24 22:48:12,934 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-24 22:48:12,934 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-24 22:48:12,952 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states. [2020-10-24 22:48:12,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-24 22:48:12,959 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 22:48:12,961 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 22:48:12,962 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 22:48:12,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 22:48:12,970 INFO L82 PathProgramCache]: Analyzing trace with hash 119383821, now seen corresponding path program 1 times [2020-10-24 22:48:12,982 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-24 22:48:12,983 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1970010366] [2020-10-24 22:48:12,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 22:48:13,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 22:48:13,167 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 22:48:13,168 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1970010366] [2020-10-24 22:48:13,169 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-24 22:48:13,170 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-24 22:48:13,171 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2097451594] [2020-10-24 22:48:13,176 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-24 22:48:13,177 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-24 22:48:13,192 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-24 22:48:13,194 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-24 22:48:13,196 INFO L87 Difference]: Start difference. First operand 14 states. Second operand 2 states. [2020-10-24 22:48:13,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 22:48:13,214 INFO L93 Difference]: Finished difference Result 24 states and 27 transitions. [2020-10-24 22:48:13,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-24 22:48:13,216 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2020-10-24 22:48:13,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 22:48:13,226 INFO L225 Difference]: With dead ends: 24 [2020-10-24 22:48:13,226 INFO L226 Difference]: Without dead ends: 9 [2020-10-24 22:48:13,230 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 22:48:13,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2020-10-24 22:48:13,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2020-10-24 22:48:13,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-10-24 22:48:13,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2020-10-24 22:48:13,265 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 8 [2020-10-24 22:48:13,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 22:48:13,274 INFO L481 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2020-10-24 22:48:13,274 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-24 22:48:13,274 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2020-10-24 22:48:13,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-24 22:48:13,275 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 22:48:13,275 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 22:48:13,275 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-24 22:48:13,276 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 22:48:13,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 22:48:13,277 INFO L82 PathProgramCache]: Analyzing trace with hash 176642123, now seen corresponding path program 1 times [2020-10-24 22:48:13,277 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-24 22:48:13,278 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [456012618] [2020-10-24 22:48:13,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 22:48:13,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-24 22:48:13,321 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-24 22:48:13,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-24 22:48:13,369 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-24 22:48:13,400 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-24 22:48:13,401 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-24 22:48:13,402 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-24 22:48:13,443 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 10:48:13 BoogieIcfgContainer [2020-10-24 22:48:13,443 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-24 22:48:13,445 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-24 22:48:13,445 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-24 22:48:13,445 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-24 22:48:13,446 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 10:48:12" (3/4) ... [2020-10-24 22:48:13,450 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-10-24 22:48:13,451 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-24 22:48:13,456 INFO L168 Benchmark]: Toolchain (without parser) took 1311.43 ms. Allocated memory is still 56.6 MB. Free memory was 33.8 MB in the beginning and 34.9 MB in the end (delta: -1.1 MB). Peak memory consumption was 1.3 MB. Max. memory is 16.1 GB. [2020-10-24 22:48:13,457 INFO L168 Benchmark]: CDTParser took 0.32 ms. Allocated memory is still 44.0 MB. Free memory was 23.7 MB in the beginning and 23.6 MB in the end (delta: 69.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-24 22:48:13,459 INFO L168 Benchmark]: CACSL2BoogieTranslator took 288.86 ms. Allocated memory is still 56.6 MB. Free memory was 33.2 MB in the beginning and 37.0 MB in the end (delta: -3.9 MB). Peak memory consumption was 7.6 MB. Max. memory is 16.1 GB. [2020-10-24 22:48:13,461 INFO L168 Benchmark]: Boogie Procedure Inliner took 36.30 ms. Allocated memory is still 56.6 MB. Free memory was 37.0 MB in the beginning and 35.6 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-24 22:48:13,462 INFO L168 Benchmark]: Boogie Preprocessor took 25.00 ms. Allocated memory is still 56.6 MB. Free memory was 35.6 MB in the beginning and 34.6 MB in the end (delta: 930.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-24 22:48:13,463 INFO L168 Benchmark]: RCFGBuilder took 285.01 ms. Allocated memory is still 56.6 MB. Free memory was 34.6 MB in the beginning and 39.6 MB in the end (delta: -4.9 MB). Peak memory consumption was 13.8 MB. Max. memory is 16.1 GB. [2020-10-24 22:48:13,465 INFO L168 Benchmark]: TraceAbstraction took 652.34 ms. Allocated memory is still 56.6 MB. Free memory was 39.0 MB in the beginning and 35.2 MB in the end (delta: 3.9 MB). Peak memory consumption was 5.0 MB. Max. memory is 16.1 GB. [2020-10-24 22:48:13,466 INFO L168 Benchmark]: Witness Printer took 6.62 ms. Allocated memory is still 56.6 MB. Free memory was 35.2 MB in the beginning and 34.9 MB in the end (delta: 269.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-24 22:48:13,482 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32 ms. Allocated memory is still 44.0 MB. Free memory was 23.7 MB in the beginning and 23.6 MB in the end (delta: 69.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 288.86 ms. Allocated memory is still 56.6 MB. Free memory was 33.2 MB in the beginning and 37.0 MB in the end (delta: -3.9 MB). Peak memory consumption was 7.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 36.30 ms. Allocated memory is still 56.6 MB. Free memory was 37.0 MB in the beginning and 35.6 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 25.00 ms. Allocated memory is still 56.6 MB. Free memory was 35.6 MB in the beginning and 34.6 MB in the end (delta: 930.4 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 285.01 ms. Allocated memory is still 56.6 MB. Free memory was 34.6 MB in the beginning and 39.6 MB in the end (delta: -4.9 MB). Peak memory consumption was 13.8 MB. Max. memory is 16.1 GB. * TraceAbstraction took 652.34 ms. Allocated memory is still 56.6 MB. Free memory was 39.0 MB in the beginning and 35.2 MB in the end (delta: 3.9 MB). Peak memory consumption was 5.0 MB. Max. memory is 16.1 GB. * Witness Printer took 6.62 ms. Allocated memory is still 56.6 MB. Free memory was 35.2 MB in the beginning and 34.9 MB in the end (delta: 269.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 3]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 27, overapproximation of someBinaryArithmeticDOUBLEoperation at line 24. Possible FailurePath: [L18] double x,y; [L20] x = __VERIFIER_nondet_double() [L12] COND FALSE !(!cond) [L23] y = x*x - x [L24] COND TRUE y >= 0 [L24] y = x / 10. [L14] COND TRUE !(cond) [L3] __assert_fail("0", "zonotope_tight.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 14 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.4s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 13 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=14occurred 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, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 16 NumberOfCodeBlocks, 16 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 7 ConstructedInterpolants, 0 QuantifiedInterpolants, 49 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.0-a4ecdab [2020-10-24 22:48:15,975 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-24 22:48:15,980 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-24 22:48:16,039 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-24 22:48:16,039 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-24 22:48:16,045 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-24 22:48:16,048 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-24 22:48:16,055 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-24 22:48:16,058 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-24 22:48:16,065 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-24 22:48:16,066 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-24 22:48:16,071 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-24 22:48:16,072 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-24 22:48:16,075 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-24 22:48:16,078 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-24 22:48:16,080 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-24 22:48:16,082 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-24 22:48:16,085 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-24 22:48:16,088 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-24 22:48:16,096 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-24 22:48:16,097 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-24 22:48:16,099 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-24 22:48:16,102 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-24 22:48:16,102 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-24 22:48:16,111 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-24 22:48:16,111 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-24 22:48:16,111 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-24 22:48:16,114 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-24 22:48:16,114 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-24 22:48:16,115 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-24 22:48:16,116 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-24 22:48:16,117 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-24 22:48:16,118 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-24 22:48:16,119 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-24 22:48:16,121 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-24 22:48:16,121 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-24 22:48:16,122 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-24 22:48:16,122 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-24 22:48:16,122 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-24 22:48:16,124 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-24 22:48:16,125 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-24 22:48:16,126 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2020-10-24 22:48:16,181 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-24 22:48:16,181 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-24 22:48:16,183 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-24 22:48:16,183 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-24 22:48:16,183 INFO L138 SettingsManager]: * Use SBE=true [2020-10-24 22:48:16,184 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-24 22:48:16,184 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-24 22:48:16,184 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-24 22:48:16,185 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-24 22:48:16,185 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-24 22:48:16,185 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-24 22:48:16,185 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-24 22:48:16,186 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-10-24 22:48:16,186 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-10-24 22:48:16,186 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-24 22:48:16,187 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-24 22:48:16,187 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-24 22:48:16,187 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-24 22:48:16,187 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-24 22:48:16,188 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-24 22:48:16,188 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-24 22:48:16,188 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-24 22:48:16,189 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-24 22:48:16,189 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-24 22:48:16,189 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-24 22:48:16,189 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-24 22:48:16,190 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2020-10-24 22:48:16,190 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-10-24 22:48:16,190 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-24 22:48:16,190 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-24 22:48:16,191 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-24 22:48:16,191 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/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 92269a31b3f4041d2f8501c63b7af13f5ed1a7b5 [2020-10-24 22:48:16,559 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-24 22:48:16,606 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-24 22:48:16,609 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-24 22:48:16,610 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-24 22:48:16,616 INFO L275 PluginConnector]: CDTParser initialized [2020-10-24 22:48:16,617 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-benchs/zonotope_tight.c [2020-10-24 22:48:16,691 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bbb463ea1/6a557951bff9426b9aa483e47c72be22/FLAGbbf5abfd7 [2020-10-24 22:48:17,166 INFO L306 CDTParser]: Found 1 translation units. [2020-10-24 22:48:17,167 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-benchs/zonotope_tight.c [2020-10-24 22:48:17,174 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bbb463ea1/6a557951bff9426b9aa483e47c72be22/FLAGbbf5abfd7 [2020-10-24 22:48:17,552 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bbb463ea1/6a557951bff9426b9aa483e47c72be22 [2020-10-24 22:48:17,555 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-24 22:48:17,562 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-24 22:48:17,564 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-24 22:48:17,564 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-24 22:48:17,568 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-24 22:48:17,569 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 10:48:17" (1/1) ... [2020-10-24 22:48:17,572 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1c745a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:48:17, skipping insertion in model container [2020-10-24 22:48:17,573 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 10:48:17" (1/1) ... [2020-10-24 22:48:17,583 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-24 22:48:17,599 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-24 22:48:17,854 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-24 22:48:17,870 INFO L203 MainTranslator]: Completed pre-run [2020-10-24 22:48:17,889 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-24 22:48:17,907 INFO L208 MainTranslator]: Completed translation [2020-10-24 22:48:17,908 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:48:17 WrapperNode [2020-10-24 22:48:17,908 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-24 22:48:17,910 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-24 22:48:17,910 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-24 22:48:17,910 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-24 22:48:17,919 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:48:17" (1/1) ... [2020-10-24 22:48:17,930 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:48:17" (1/1) ... [2020-10-24 22:48:17,950 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-24 22:48:17,951 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-24 22:48:17,951 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-24 22:48:17,951 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-24 22:48:17,961 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:48:17" (1/1) ... [2020-10-24 22:48:17,961 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:48:17" (1/1) ... [2020-10-24 22:48:17,964 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:48:17" (1/1) ... [2020-10-24 22:48:17,965 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:48:17" (1/1) ... [2020-10-24 22:48:17,972 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:48:17" (1/1) ... [2020-10-24 22:48:17,974 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:48:17" (1/1) ... [2020-10-24 22:48:17,976 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:48:17" (1/1) ... [2020-10-24 22:48:17,979 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-24 22:48:17,981 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-24 22:48:17,981 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-24 22:48:17,981 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-24 22:48:17,982 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:48:17" (1/1) ... No working directory specified, using /storage/repos/ultimate/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 22:48:18,063 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-10-24 22:48:18,064 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-24 22:48:18,064 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-24 22:48:18,064 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-24 22:48:22,416 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-24 22:48:22,416 INFO L298 CfgBuilder]: Removed 10 assume(true) statements. [2020-10-24 22:48:22,418 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 10:48:22 BoogieIcfgContainer [2020-10-24 22:48:22,418 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-24 22:48:22,424 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-24 22:48:22,424 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-24 22:48:22,428 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-24 22:48:22,429 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 10:48:17" (1/3) ... [2020-10-24 22:48:22,430 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13dbe1e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 10:48:22, skipping insertion in model container [2020-10-24 22:48:22,431 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:48:17" (2/3) ... [2020-10-24 22:48:22,432 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13dbe1e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 10:48:22, skipping insertion in model container [2020-10-24 22:48:22,432 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 10:48:22" (3/3) ... [2020-10-24 22:48:22,435 INFO L111 eAbstractionObserver]: Analyzing ICFG zonotope_tight.c [2020-10-24 22:48:22,458 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-24 22:48:22,463 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-24 22:48:22,477 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-24 22:48:22,508 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-24 22:48:22,508 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-24 22:48:22,508 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-24 22:48:22,509 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-24 22:48:22,509 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-24 22:48:22,509 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-24 22:48:22,509 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-24 22:48:22,509 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-24 22:48:22,522 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states. [2020-10-24 22:48:22,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-24 22:48:22,526 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 22:48:22,526 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 22:48:22,527 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 22:48:22,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 22:48:22,532 INFO L82 PathProgramCache]: Analyzing trace with hash 119383821, now seen corresponding path program 1 times [2020-10-24 22:48:22,542 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-24 22:48:22,543 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1694261741] [2020-10-24 22:48:22,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/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 22:48:23,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 22:48:23,029 INFO L263 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 1 conjunts are in the unsatisfiable core [2020-10-24 22:48:23,034 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-24 22:48:23,055 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 22:48:23,055 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-24 22:48:23,060 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 22:48:23,061 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1694261741] [2020-10-24 22:48:23,062 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-24 22:48:23,062 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-10-24 22:48:23,063 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1440160712] [2020-10-24 22:48:23,067 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-24 22:48:23,067 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-24 22:48:23,080 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-24 22:48:23,081 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-24 22:48:23,083 INFO L87 Difference]: Start difference. First operand 14 states. Second operand 2 states. [2020-10-24 22:48:23,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 22:48:23,100 INFO L93 Difference]: Finished difference Result 24 states and 27 transitions. [2020-10-24 22:48:23,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-24 22:48:23,101 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2020-10-24 22:48:23,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 22:48:23,110 INFO L225 Difference]: With dead ends: 24 [2020-10-24 22:48:23,110 INFO L226 Difference]: Without dead ends: 9 [2020-10-24 22:48:23,113 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 14 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 22:48:23,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2020-10-24 22:48:23,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2020-10-24 22:48:23,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-10-24 22:48:23,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2020-10-24 22:48:23,146 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 8 [2020-10-24 22:48:23,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 22:48:23,146 INFO L481 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2020-10-24 22:48:23,147 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-24 22:48:23,147 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2020-10-24 22:48:23,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-24 22:48:23,148 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 22:48:23,148 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 22:48:23,363 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-10-24 22:48:23,363 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 22:48:23,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 22:48:23,366 INFO L82 PathProgramCache]: Analyzing trace with hash 176642123, now seen corresponding path program 1 times [2020-10-24 22:48:23,367 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-24 22:48:23,367 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [195634182] [2020-10-24 22:48:23,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/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 22:48:23,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 22:48:23,882 INFO L263 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-24 22:48:23,884 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-24 22:48:24,009 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-24 22:48:44,432 WARN L193 SmtUtils]: Spent 8.53 s on a formula simplification that was a NOOP. DAG size: 15 [2020-10-24 22:48:44,441 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-24 22:48:48,925 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-24 22:49:01,058 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (= c_ULTIMATE.start___VERIFIER_assert_~cond (_ bv0 32)))) (or (and .cse0 (exists ((ULTIMATE.start_main_~x~0 (_ FloatingPoint 11 53))) (let ((.cse1 ((_ to_fp 11 53) roundNearestTiesToEven 10.0))) (and (fp.geq ULTIMATE.start_main_~x~0 (_ +zero 11 53)) (not (fp.leq (fp.div roundNearestTiesToEven ULTIMATE.start_main_~x~0 .cse1) ((_ to_fp 11 53) roundNearestTiesToEven 4.0))) (fp.leq ULTIMATE.start_main_~x~0 .cse1))))) (= (bvadd c_ULTIMATE.start___VERIFIER_assert_~cond (_ bv4294967295 32)) (_ bv0 32)) (and (exists ((ULTIMATE.start_main_~x~0 (_ FloatingPoint 11 53))) (let ((.cse2 ((_ to_fp 11 53) roundNearestTiesToEven 10.0))) (and (not (fp.geq (fp.div roundNearestTiesToEven ULTIMATE.start_main_~x~0 .cse2) (_ +zero 11 53))) (fp.geq ULTIMATE.start_main_~x~0 (_ +zero 11 53)) (fp.leq ULTIMATE.start_main_~x~0 .cse2)))) .cse0))) is different from false [2020-10-24 22:49:12,509 WARN L838 $PredicateComparison]: unable to prove that (or (exists ((ULTIMATE.start_main_~x~0 (_ FloatingPoint 11 53))) (let ((.cse0 ((_ to_fp 11 53) roundNearestTiesToEven 10.0))) (and (not (fp.geq (fp.div roundNearestTiesToEven ULTIMATE.start_main_~x~0 .cse0) (_ +zero 11 53))) (fp.geq ULTIMATE.start_main_~x~0 (_ +zero 11 53)) (fp.leq ULTIMATE.start_main_~x~0 .cse0)))) (exists ((v_prenex_1 (_ FloatingPoint 11 53))) (let ((.cse1 ((_ to_fp 11 53) roundNearestTiesToEven 10.0))) (and (not (fp.leq (fp.div roundNearestTiesToEven v_prenex_1 .cse1) ((_ to_fp 11 53) roundNearestTiesToEven 4.0))) (fp.geq v_prenex_1 (_ +zero 11 53)) (fp.leq v_prenex_1 .cse1))))) is different from false [2020-10-24 22:49:14,747 WARN L860 $PredicateComparison]: unable to prove that (or (exists ((ULTIMATE.start_main_~x~0 (_ FloatingPoint 11 53))) (let ((.cse0 ((_ to_fp 11 53) roundNearestTiesToEven 10.0))) (and (not (fp.geq (fp.div roundNearestTiesToEven ULTIMATE.start_main_~x~0 .cse0) (_ +zero 11 53))) (fp.geq ULTIMATE.start_main_~x~0 (_ +zero 11 53)) (fp.leq ULTIMATE.start_main_~x~0 .cse0)))) (exists ((v_prenex_1 (_ FloatingPoint 11 53))) (let ((.cse1 ((_ to_fp 11 53) roundNearestTiesToEven 10.0))) (and (not (fp.leq (fp.div roundNearestTiesToEven v_prenex_1 .cse1) ((_ to_fp 11 53) roundNearestTiesToEven 4.0))) (fp.geq v_prenex_1 (_ +zero 11 53)) (fp.leq v_prenex_1 .cse1))))) is different from true [2020-10-24 22:49:14,750 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 22:49:14,751 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-24 22:49:21,516 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~x~0 ((_ to_fp 11 53) c_currentRoundingMode 10.0)))) (and (fp.leq .cse0 ((_ to_fp 11 53) c_currentRoundingMode 4.0)) (fp.geq .cse0 (_ +zero 11 53)))) is different from false [2020-10-24 22:49:26,207 WARN L860 $PredicateComparison]: unable to prove that (or (let ((.cse0 (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~x~0 ((_ to_fp 11 53) c_currentRoundingMode 10.0)))) (and (fp.leq .cse0 ((_ to_fp 11 53) c_currentRoundingMode 4.0)) (fp.geq .cse0 (_ +zero 11 53)))) (= (_ bv0 32) c_ULTIMATE.start_assume_abort_if_not_~cond)) is different from true [2020-10-24 22:49:26,228 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 3, 2, 1] term [2020-10-24 22:49:26,229 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-24 22:49:26,231 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-10-24 22:49:28,459 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_ULTIMATE.start_main_~x~0_9 (_ FloatingPoint 11 53))) (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode 10.0))) (or (not (fp.geq v_ULTIMATE.start_main_~x~0_9 (_ +zero 11 53))) (not (fp.leq v_ULTIMATE.start_main_~x~0_9 .cse0)) (fp.leq (fp.div c_currentRoundingMode v_ULTIMATE.start_main_~x~0_9 .cse0) ((_ to_fp 11 53) c_currentRoundingMode 4.0))))) (forall ((v_ULTIMATE.start_main_~x~0_9 (_ FloatingPoint 11 53))) (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode 10.0))) (or (not (fp.geq v_ULTIMATE.start_main_~x~0_9 (_ +zero 11 53))) (not (fp.leq v_ULTIMATE.start_main_~x~0_9 .cse1)) (fp.geq (fp.div c_currentRoundingMode v_ULTIMATE.start_main_~x~0_9 .cse1) (_ +zero 11 53)))))) is different from false [2020-10-24 22:49:30,928 WARN L860 $PredicateComparison]: unable to prove that (and (forall ((v_ULTIMATE.start_main_~x~0_9 (_ FloatingPoint 11 53))) (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode 10.0))) (or (not (fp.geq v_ULTIMATE.start_main_~x~0_9 (_ +zero 11 53))) (not (fp.leq v_ULTIMATE.start_main_~x~0_9 .cse0)) (fp.leq (fp.div c_currentRoundingMode v_ULTIMATE.start_main_~x~0_9 .cse0) ((_ to_fp 11 53) c_currentRoundingMode 4.0))))) (forall ((v_ULTIMATE.start_main_~x~0_9 (_ FloatingPoint 11 53))) (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode 10.0))) (or (not (fp.geq v_ULTIMATE.start_main_~x~0_9 (_ +zero 11 53))) (not (fp.leq v_ULTIMATE.start_main_~x~0_9 .cse1)) (fp.geq (fp.div c_currentRoundingMode v_ULTIMATE.start_main_~x~0_9 .cse1) (_ +zero 11 53)))))) is different from true [2020-10-24 22:49:30,930 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 22:49:30,930 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [195634182] [2020-10-24 22:49:30,930 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-24 22:49:30,931 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 12 [2020-10-24 22:49:30,931 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [847220509] [2020-10-24 22:49:30,933 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-24 22:49:30,933 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-24 22:49:30,935 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-24 22:49:30,937 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=36, Unknown=14, NotChecked=80, Total=156 [2020-10-24 22:49:30,937 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand 13 states. [2020-10-24 22:49:35,404 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_ULTIMATE.start_main_~x~0_9 (_ FloatingPoint 11 53))) (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode 10.0))) (or (not (fp.geq v_ULTIMATE.start_main_~x~0_9 (_ +zero 11 53))) (not (fp.leq v_ULTIMATE.start_main_~x~0_9 .cse0)) (fp.leq (fp.div c_currentRoundingMode v_ULTIMATE.start_main_~x~0_9 .cse0) ((_ to_fp 11 53) c_currentRoundingMode 4.0))))) (= c_currentRoundingMode roundNearestTiesToEven) (forall ((v_ULTIMATE.start_main_~x~0_9 (_ FloatingPoint 11 53))) (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode 10.0))) (or (not (fp.geq v_ULTIMATE.start_main_~x~0_9 (_ +zero 11 53))) (not (fp.leq v_ULTIMATE.start_main_~x~0_9 .cse1)) (fp.geq (fp.div c_currentRoundingMode v_ULTIMATE.start_main_~x~0_9 .cse1) (_ +zero 11 53)))))) is different from false [2020-10-24 22:49:37,894 WARN L860 $PredicateComparison]: unable to prove that (and (forall ((v_ULTIMATE.start_main_~x~0_9 (_ FloatingPoint 11 53))) (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode 10.0))) (or (not (fp.geq v_ULTIMATE.start_main_~x~0_9 (_ +zero 11 53))) (not (fp.leq v_ULTIMATE.start_main_~x~0_9 .cse0)) (fp.leq (fp.div c_currentRoundingMode v_ULTIMATE.start_main_~x~0_9 .cse0) ((_ to_fp 11 53) c_currentRoundingMode 4.0))))) (= c_currentRoundingMode roundNearestTiesToEven) (forall ((v_ULTIMATE.start_main_~x~0_9 (_ FloatingPoint 11 53))) (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode 10.0))) (or (not (fp.geq v_ULTIMATE.start_main_~x~0_9 (_ +zero 11 53))) (not (fp.leq v_ULTIMATE.start_main_~x~0_9 .cse1)) (fp.geq (fp.div c_currentRoundingMode v_ULTIMATE.start_main_~x~0_9 .cse1) (_ +zero 11 53)))))) is different from true [2020-10-24 22:50:48,457 WARN L193 SmtUtils]: Spent 52.98 s on a formula simplification. DAG size of input: 28 DAG size of output: 26 [2020-10-24 22:51:40,157 WARN L193 SmtUtils]: Spent 31.67 s on a formula simplification. DAG size of input: 15 DAG size of output: 14 [2020-10-24 22:52:11,863 WARN L193 SmtUtils]: Spent 19.79 s on a formula simplification. DAG size of input: 19 DAG size of output: 18 [2020-10-24 22:53:05,695 WARN L193 SmtUtils]: Spent 45.94 s on a formula simplification. DAG size of input: 41 DAG size of output: 23 [2020-10-24 22:53:05,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 22:53:05,712 INFO L93 Difference]: Finished difference Result 13 states and 12 transitions. [2020-10-24 22:53:05,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-24 22:53:05,714 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 8 [2020-10-24 22:53:05,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 22:53:05,714 INFO L225 Difference]: With dead ends: 13 [2020-10-24 22:53:05,715 INFO L226 Difference]: Without dead ends: 9 [2020-10-24 22:53:05,717 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 6 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 247.1s TimeCoverageRelationStatistics Valid=50, Invalid=77, Unknown=29, NotChecked=150, Total=306 [2020-10-24 22:53:05,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2020-10-24 22:53:05,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2020-10-24 22:53:05,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-10-24 22:53:05,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 8 transitions. [2020-10-24 22:53:05,719 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 8 transitions. Word has length 8 [2020-10-24 22:53:05,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 22:53:05,719 INFO L481 AbstractCegarLoop]: Abstraction has 9 states and 8 transitions. [2020-10-24 22:53:05,719 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-24 22:53:05,719 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 8 transitions. [2020-10-24 22:53:05,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-24 22:53:05,720 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 22:53:05,720 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 22:53:05,921 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-10-24 22:53:05,922 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 22:53:05,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 22:53:05,924 INFO L82 PathProgramCache]: Analyzing trace with hash 176701705, now seen corresponding path program 1 times [2020-10-24 22:53:05,924 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-24 22:53:05,925 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1041986527] [2020-10-24 22:53:05,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/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 22:53:06,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 22:53:06,325 INFO L263 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-24 22:53:06,327 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-24 22:53:06,385 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-24 22:53:19,432 WARN L193 SmtUtils]: Spent 8.01 s on a formula simplification that was a NOOP. DAG size: 14 [2020-10-24 22:53:45,275 WARN L193 SmtUtils]: Spent 10.19 s on a formula simplification that was a NOOP. DAG size: 23 [2020-10-24 22:53:45,279 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-10-24 22:53:49,403 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-10-24 22:54:01,848 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse1 (= c_ULTIMATE.start___VERIFIER_assert_~cond (_ bv0 32)))) (or (and (exists ((ULTIMATE.start_main_~x~0 (_ FloatingPoint 11 53))) (let ((.cse0 (fp.mul roundNearestTiesToEven ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~x~0))) (and (fp.geq ULTIMATE.start_main_~x~0 (_ +zero 11 53)) (fp.leq ULTIMATE.start_main_~x~0 ((_ to_fp 11 53) roundNearestTiesToEven 10.0)) (not (fp.geq (fp.add roundNearestTiesToEven .cse0 ((_ to_fp 11 53) roundNearestTiesToEven 2.0)) (_ +zero 11 53))) (not (fp.geq (fp.sub roundNearestTiesToEven .cse0 ULTIMATE.start_main_~x~0) ((_ to_fp 11 53) roundNearestTiesToEven (_ bv0 32))))))) .cse1) (and (exists ((ULTIMATE.start_main_~x~0 (_ FloatingPoint 11 53))) (let ((.cse2 (fp.mul roundNearestTiesToEven ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~x~0))) (and (fp.geq ULTIMATE.start_main_~x~0 (_ +zero 11 53)) (fp.leq ULTIMATE.start_main_~x~0 ((_ to_fp 11 53) roundNearestTiesToEven 10.0)) (not (fp.geq (fp.sub roundNearestTiesToEven .cse2 ULTIMATE.start_main_~x~0) ((_ to_fp 11 53) roundNearestTiesToEven (_ bv0 32)))) (not (fp.leq (fp.add roundNearestTiesToEven .cse2 ((_ to_fp 11 53) roundNearestTiesToEven 2.0)) ((_ to_fp 11 53) roundNearestTiesToEven 4.0)))))) .cse1) (and (= (bvadd c_ULTIMATE.start___VERIFIER_assert_~cond (_ bv4294967295 32)) (_ bv0 32)) (exists ((ULTIMATE.start_main_~x~0 (_ FloatingPoint 11 53))) (let ((.cse4 (fp.mul roundNearestTiesToEven ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~x~0))) (let ((.cse3 (fp.add roundNearestTiesToEven .cse4 ((_ to_fp 11 53) roundNearestTiesToEven 2.0)))) (and (fp.geq ULTIMATE.start_main_~x~0 (_ +zero 11 53)) (fp.leq ULTIMATE.start_main_~x~0 ((_ to_fp 11 53) roundNearestTiesToEven 10.0)) (fp.geq .cse3 (_ +zero 11 53)) (not (fp.geq (fp.sub roundNearestTiesToEven .cse4 ULTIMATE.start_main_~x~0) ((_ to_fp 11 53) roundNearestTiesToEven (_ bv0 32)))) (fp.leq .cse3 ((_ to_fp 11 53) roundNearestTiesToEven 4.0))))))))) is different from false [2020-10-24 22:54:12,206 WARN L838 $PredicateComparison]: unable to prove that (or (exists ((ULTIMATE.start_main_~x~0 (_ FloatingPoint 11 53))) (let ((.cse0 (fp.mul roundNearestTiesToEven ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~x~0))) (and (fp.geq ULTIMATE.start_main_~x~0 (_ +zero 11 53)) (fp.leq ULTIMATE.start_main_~x~0 ((_ to_fp 11 53) roundNearestTiesToEven 10.0)) (not (fp.geq (fp.sub roundNearestTiesToEven .cse0 ULTIMATE.start_main_~x~0) ((_ to_fp 11 53) roundNearestTiesToEven (_ bv0 32)))) (not (fp.leq (fp.add roundNearestTiesToEven .cse0 ((_ to_fp 11 53) roundNearestTiesToEven 2.0)) ((_ to_fp 11 53) roundNearestTiesToEven 4.0)))))) (exists ((v_prenex_2 (_ FloatingPoint 11 53))) (let ((.cse1 (fp.mul roundNearestTiesToEven v_prenex_2 v_prenex_2))) (and (fp.geq v_prenex_2 (_ +zero 11 53)) (not (fp.geq (fp.sub roundNearestTiesToEven .cse1 v_prenex_2) ((_ to_fp 11 53) roundNearestTiesToEven (_ bv0 32)))) (fp.leq v_prenex_2 ((_ to_fp 11 53) roundNearestTiesToEven 10.0)) (not (fp.geq (fp.add roundNearestTiesToEven .cse1 ((_ to_fp 11 53) roundNearestTiesToEven 2.0)) (_ +zero 11 53))))))) is different from false [2020-10-24 22:54:14,258 WARN L860 $PredicateComparison]: unable to prove that (or (exists ((ULTIMATE.start_main_~x~0 (_ FloatingPoint 11 53))) (let ((.cse0 (fp.mul roundNearestTiesToEven ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~x~0))) (and (fp.geq ULTIMATE.start_main_~x~0 (_ +zero 11 53)) (fp.leq ULTIMATE.start_main_~x~0 ((_ to_fp 11 53) roundNearestTiesToEven 10.0)) (not (fp.geq (fp.sub roundNearestTiesToEven .cse0 ULTIMATE.start_main_~x~0) ((_ to_fp 11 53) roundNearestTiesToEven (_ bv0 32)))) (not (fp.leq (fp.add roundNearestTiesToEven .cse0 ((_ to_fp 11 53) roundNearestTiesToEven 2.0)) ((_ to_fp 11 53) roundNearestTiesToEven 4.0)))))) (exists ((v_prenex_2 (_ FloatingPoint 11 53))) (let ((.cse1 (fp.mul roundNearestTiesToEven v_prenex_2 v_prenex_2))) (and (fp.geq v_prenex_2 (_ +zero 11 53)) (not (fp.geq (fp.sub roundNearestTiesToEven .cse1 v_prenex_2) ((_ to_fp 11 53) roundNearestTiesToEven (_ bv0 32)))) (fp.leq v_prenex_2 ((_ to_fp 11 53) roundNearestTiesToEven 10.0)) (not (fp.geq (fp.add roundNearestTiesToEven .cse1 ((_ to_fp 11 53) roundNearestTiesToEven 2.0)) (_ +zero 11 53))))))) is different from true [2020-10-24 22:54:14,261 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 22:54:14,261 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-24 22:54:48,799 WARN L193 SmtUtils]: Spent 14.21 s on a formula simplification. DAG size of input: 17 DAG size of output: 14 [2020-10-24 22:54:51,341 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse0 (fp.mul c_currentRoundingMode c_ULTIMATE.start_main_~x~0 c_ULTIMATE.start_main_~x~0))) (or (fp.leq (fp.add c_currentRoundingMode .cse0 ((_ to_fp 11 53) c_currentRoundingMode 2.0)) ((_ to_fp 11 53) c_currentRoundingMode 4.0)) (fp.geq (fp.sub c_currentRoundingMode .cse0 c_ULTIMATE.start_main_~x~0) ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32))))) is different from true [2020-10-24 22:55:30,412 WARN L193 SmtUtils]: Spent 10.82 s on a formula simplification that was a NOOP. DAG size: 16 [2020-10-24 22:55:30,423 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 3, 2, 1] term [2020-10-24 22:55:30,423 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-24 22:55:32,490 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ULTIMATE.start_main_~x~0_10 (_ FloatingPoint 11 53))) (let ((.cse0 (fp.mul c_currentRoundingMode v_ULTIMATE.start_main_~x~0_10 v_ULTIMATE.start_main_~x~0_10))) (or (not (fp.geq v_ULTIMATE.start_main_~x~0_10 (_ +zero 11 53))) (not (fp.leq v_ULTIMATE.start_main_~x~0_10 ((_ to_fp 11 53) c_currentRoundingMode 10.0))) (fp.geq (fp.sub c_currentRoundingMode .cse0 v_ULTIMATE.start_main_~x~0_10) ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32))) (fp.leq (fp.add c_currentRoundingMode .cse0 ((_ to_fp 11 53) c_currentRoundingMode 2.0)) ((_ to_fp 11 53) c_currentRoundingMode 4.0))))) is different from false [2020-10-24 22:55:34,550 WARN L860 $PredicateComparison]: unable to prove that (forall ((v_ULTIMATE.start_main_~x~0_10 (_ FloatingPoint 11 53))) (let ((.cse0 (fp.mul c_currentRoundingMode v_ULTIMATE.start_main_~x~0_10 v_ULTIMATE.start_main_~x~0_10))) (or (not (fp.geq v_ULTIMATE.start_main_~x~0_10 (_ +zero 11 53))) (not (fp.leq v_ULTIMATE.start_main_~x~0_10 ((_ to_fp 11 53) c_currentRoundingMode 10.0))) (fp.geq (fp.sub c_currentRoundingMode .cse0 v_ULTIMATE.start_main_~x~0_10) ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32))) (fp.leq (fp.add c_currentRoundingMode .cse0 ((_ to_fp 11 53) c_currentRoundingMode 2.0)) ((_ to_fp 11 53) c_currentRoundingMode 4.0))))) is different from true [2020-10-24 22:55:34,551 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 22:55:34,552 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1041986527] [2020-10-24 22:55:34,552 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-24 22:55:34,552 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 14 [2020-10-24 22:55:34,552 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [570995907] [2020-10-24 22:55:34,552 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-24 22:55:34,553 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-24 22:55:34,554 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-24 22:55:34,554 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=64, Unknown=29, NotChecked=84, Total=210 [2020-10-24 22:55:34,554 INFO L87 Difference]: Start difference. First operand 9 states and 8 transitions. Second operand 15 states. [2020-10-24 22:55:41,698 WARN L838 $PredicateComparison]: unable to prove that (and (= c_currentRoundingMode roundNearestTiesToEven) (forall ((v_ULTIMATE.start_main_~x~0_10 (_ FloatingPoint 11 53))) (let ((.cse0 (fp.mul c_currentRoundingMode v_ULTIMATE.start_main_~x~0_10 v_ULTIMATE.start_main_~x~0_10))) (or (not (fp.geq v_ULTIMATE.start_main_~x~0_10 (_ +zero 11 53))) (not (fp.leq v_ULTIMATE.start_main_~x~0_10 ((_ to_fp 11 53) c_currentRoundingMode 10.0))) (fp.geq (fp.sub c_currentRoundingMode .cse0 v_ULTIMATE.start_main_~x~0_10) ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32))) (fp.leq (fp.add c_currentRoundingMode .cse0 ((_ to_fp 11 53) c_currentRoundingMode 2.0)) ((_ to_fp 11 53) c_currentRoundingMode 4.0)))))) is different from false [2020-10-24 22:55:46,581 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse2 (= (_ bv0 32) c_ULTIMATE.start_assume_abort_if_not_~cond))) (and (= c_currentRoundingMode roundNearestTiesToEven) (let ((.cse1 (fp.geq c_ULTIMATE.start_main_~x~0 (_ +zero 11 53))) (.cse0 (fp.leq c_ULTIMATE.start_main_~x~0 ((_ to_fp 11 53) c_currentRoundingMode 10.0)))) (or (and (or (not .cse0) (not .cse1)) .cse2) (and (= (_ bv1 32) c_ULTIMATE.start_assume_abort_if_not_~cond) .cse1 .cse0))) (let ((.cse3 (fp.mul c_currentRoundingMode c_ULTIMATE.start_main_~x~0 c_ULTIMATE.start_main_~x~0))) (or (fp.leq (fp.add c_currentRoundingMode .cse3 ((_ to_fp 11 53) c_currentRoundingMode 2.0)) ((_ to_fp 11 53) c_currentRoundingMode 4.0)) (fp.geq (fp.sub c_currentRoundingMode .cse3 c_ULTIMATE.start_main_~x~0) ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32))) .cse2)))) is different from true [2020-10-24 22:55:49,166 WARN L860 $PredicateComparison]: unable to prove that (and (let ((.cse0 (fp.mul c_currentRoundingMode c_ULTIMATE.start_main_~x~0 c_ULTIMATE.start_main_~x~0))) (or (fp.leq (fp.add c_currentRoundingMode .cse0 ((_ to_fp 11 53) c_currentRoundingMode 2.0)) ((_ to_fp 11 53) c_currentRoundingMode 4.0)) (fp.geq (fp.sub c_currentRoundingMode .cse0 c_ULTIMATE.start_main_~x~0) ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32))))) (= c_currentRoundingMode roundNearestTiesToEven) (fp.geq c_ULTIMATE.start_main_~x~0 (_ +zero 11 53)) (fp.leq c_ULTIMATE.start_main_~x~0 ((_ to_fp 11 53) c_currentRoundingMode 10.0))) is different from true [2020-10-24 22:55:51,238 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (fp.mul c_currentRoundingMode c_ULTIMATE.start_main_~x~0 c_ULTIMATE.start_main_~x~0))) (and (or (fp.leq (fp.add c_currentRoundingMode .cse0 ((_ to_fp 11 53) c_currentRoundingMode 2.0)) ((_ to_fp 11 53) c_currentRoundingMode 4.0)) (fp.geq c_ULTIMATE.start_main_~y~0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32)))) (= c_currentRoundingMode roundNearestTiesToEven) (= c_ULTIMATE.start_main_~y~0 (fp.sub c_currentRoundingMode .cse0 c_ULTIMATE.start_main_~x~0)) (fp.geq c_ULTIMATE.start_main_~x~0 (_ +zero 11 53)) (fp.leq c_ULTIMATE.start_main_~x~0 ((_ to_fp 11 53) c_currentRoundingMode 10.0)))) is different from false [2020-10-24 22:55:54,635 WARN L838 $PredicateComparison]: unable to prove that (and (fp.leq c_ULTIMATE.start_main_~y~0 ((_ to_fp 11 53) c_currentRoundingMode 4.0)) (= c_currentRoundingMode roundNearestTiesToEven) (fp.geq c_ULTIMATE.start_main_~y~0 (_ +zero 11 53)) (exists ((ULTIMATE.start_main_~x~0 (_ FloatingPoint 11 53))) (let ((.cse0 (fp.mul c_currentRoundingMode ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~x~0))) (and (not (fp.geq (fp.sub c_currentRoundingMode .cse0 ULTIMATE.start_main_~x~0) ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32)))) (fp.geq ULTIMATE.start_main_~x~0 (_ +zero 11 53)) (fp.leq ULTIMATE.start_main_~x~0 ((_ to_fp 11 53) c_currentRoundingMode 10.0)) (= c_ULTIMATE.start_main_~y~0 (fp.add c_currentRoundingMode .cse0 ((_ to_fp 11 53) c_currentRoundingMode 2.0))))))) is different from false [2020-10-24 22:55:56,703 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (= c_ULTIMATE.start___VERIFIER_assert_~cond (_ bv0 32)))) (and (not .cse0) (or (and (exists ((ULTIMATE.start_main_~x~0 (_ FloatingPoint 11 53))) (let ((.cse1 (fp.mul roundNearestTiesToEven ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~x~0))) (and (fp.geq ULTIMATE.start_main_~x~0 (_ +zero 11 53)) (fp.leq ULTIMATE.start_main_~x~0 ((_ to_fp 11 53) roundNearestTiesToEven 10.0)) (not (fp.geq (fp.add roundNearestTiesToEven .cse1 ((_ to_fp 11 53) roundNearestTiesToEven 2.0)) (_ +zero 11 53))) (not (fp.geq (fp.sub roundNearestTiesToEven .cse1 ULTIMATE.start_main_~x~0) ((_ to_fp 11 53) roundNearestTiesToEven (_ bv0 32))))))) .cse0) (and (exists ((ULTIMATE.start_main_~x~0 (_ FloatingPoint 11 53))) (let ((.cse2 (fp.mul roundNearestTiesToEven ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~x~0))) (and (fp.geq ULTIMATE.start_main_~x~0 (_ +zero 11 53)) (fp.leq ULTIMATE.start_main_~x~0 ((_ to_fp 11 53) roundNearestTiesToEven 10.0)) (not (fp.geq (fp.sub roundNearestTiesToEven .cse2 ULTIMATE.start_main_~x~0) ((_ to_fp 11 53) roundNearestTiesToEven (_ bv0 32)))) (not (fp.leq (fp.add roundNearestTiesToEven .cse2 ((_ to_fp 11 53) roundNearestTiesToEven 2.0)) ((_ to_fp 11 53) roundNearestTiesToEven 4.0)))))) .cse0) (and (= (bvadd c_ULTIMATE.start___VERIFIER_assert_~cond (_ bv4294967295 32)) (_ bv0 32)) (exists ((ULTIMATE.start_main_~x~0 (_ FloatingPoint 11 53))) (let ((.cse4 (fp.mul roundNearestTiesToEven ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~x~0))) (let ((.cse3 (fp.add roundNearestTiesToEven .cse4 ((_ to_fp 11 53) roundNearestTiesToEven 2.0)))) (and (fp.geq ULTIMATE.start_main_~x~0 (_ +zero 11 53)) (fp.leq ULTIMATE.start_main_~x~0 ((_ to_fp 11 53) roundNearestTiesToEven 10.0)) (fp.geq .cse3 (_ +zero 11 53)) (not (fp.geq (fp.sub roundNearestTiesToEven .cse4 ULTIMATE.start_main_~x~0) ((_ to_fp 11 53) roundNearestTiesToEven (_ bv0 32)))) (fp.leq .cse3 ((_ to_fp 11 53) roundNearestTiesToEven 4.0)))))))))) is different from false [2020-10-24 22:55:56,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 22:55:56,706 INFO L93 Difference]: Finished difference Result 9 states and 8 transitions. [2020-10-24 22:55:56,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-24 22:55:56,706 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 8 [2020-10-24 22:55:56,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 22:55:56,707 INFO L225 Difference]: With dead ends: 9 [2020-10-24 22:55:56,707 INFO L226 Difference]: Without dead ends: 0 [2020-10-24 22:55:56,709 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 10 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 142.5s TimeCoverageRelationStatistics Valid=45, Invalid=70, Unknown=35, NotChecked=270, Total=420 [2020-10-24 22:55:56,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-24 22:55:56,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-24 22:55:56,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-24 22:55:56,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-24 22:55:56,710 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 8 [2020-10-24 22:55:56,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 22:55:56,710 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-24 22:55:56,710 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-24 22:55:56,710 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-24 22:55:56,710 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-24 22:55:56,911 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-10-24 22:55:56,915 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-24 22:55:56,950 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-10-24 22:55:56,950 INFO L274 CegarLoopResult]: For program point L11(lines 11 13) no Hoare annotation was computed. [2020-10-24 22:55:56,950 INFO L274 CegarLoopResult]: For program point L3(line 3) no Hoare annotation was computed. [2020-10-24 22:55:56,950 INFO L274 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-10-24 22:55:56,950 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-10-24 22:55:56,951 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-10-24 22:55:56,951 INFO L277 CegarLoopResult]: At program point L28(lines 16 29) the Hoare annotation is: true [2020-10-24 22:55:56,951 INFO L274 CegarLoopResult]: For program point L24(lines 24 25) no Hoare annotation was computed. [2020-10-24 22:55:56,951 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 3) no Hoare annotation was computed. [2020-10-24 22:55:56,951 INFO L274 CegarLoopResult]: For program point L24-2(lines 24 25) no Hoare annotation was computed. [2020-10-24 22:55:56,951 INFO L274 CegarLoopResult]: For program point L14(line 14) no Hoare annotation was computed. [2020-10-24 22:55:56,951 INFO L274 CegarLoopResult]: For program point L14-1(line 14) no Hoare annotation was computed. [2020-10-24 22:55:56,952 INFO L274 CegarLoopResult]: For program point L12(line 12) no Hoare annotation was computed. [2020-10-24 22:55:56,952 INFO L277 CegarLoopResult]: At program point L14-3(line 14) the Hoare annotation is: true [2020-10-24 22:55:56,959 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 10:55:56 BoogieIcfgContainer [2020-10-24 22:55:56,960 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-24 22:55:56,960 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-24 22:55:56,961 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-24 22:55:56,961 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-24 22:55:56,961 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 10:48:22" (3/4) ... [2020-10-24 22:55:56,965 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-10-24 22:55:56,975 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2020-10-24 22:55:56,976 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-10-24 22:55:56,976 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2020-10-24 22:55:56,976 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-10-24 22:55:57,016 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-24 22:55:57,016 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-24 22:55:57,018 INFO L168 Benchmark]: Toolchain (without parser) took 459460.90 ms. Allocated memory was 48.2 MB in the beginning and 62.9 MB in the end (delta: 14.7 MB). Free memory was 25.9 MB in the beginning and 27.2 MB in the end (delta: -1.3 MB). Peak memory consumption was 13.6 MB. Max. memory is 16.1 GB. [2020-10-24 22:55:57,019 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 48.2 MB. Free memory was 30.1 MB in the beginning and 30.1 MB in the end (delta: 63.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-24 22:55:57,020 INFO L168 Benchmark]: CACSL2BoogieTranslator took 345.04 ms. Allocated memory was 48.2 MB in the beginning and 62.9 MB in the end (delta: 14.7 MB). Free memory was 25.3 MB in the beginning and 44.7 MB in the end (delta: -19.4 MB). Peak memory consumption was 4.9 MB. Max. memory is 16.1 GB. [2020-10-24 22:55:57,020 INFO L168 Benchmark]: Boogie Procedure Inliner took 40.52 ms. Allocated memory is still 62.9 MB. Free memory was 44.4 MB in the beginning and 43.1 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-24 22:55:57,021 INFO L168 Benchmark]: Boogie Preprocessor took 28.84 ms. Allocated memory is still 62.9 MB. Free memory was 43.1 MB in the beginning and 42.0 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-24 22:55:57,022 INFO L168 Benchmark]: RCFGBuilder took 4437.70 ms. Allocated memory is still 62.9 MB. Free memory was 42.0 MB in the beginning and 30.5 MB in the end (delta: 11.5 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-10-24 22:55:57,022 INFO L168 Benchmark]: TraceAbstraction took 454536.15 ms. Allocated memory is still 62.9 MB. Free memory was 30.0 MB in the beginning and 29.9 MB in the end (delta: 180.8 kB). Peak memory consumption was 2.4 MB. Max. memory is 16.1 GB. [2020-10-24 22:55:57,023 INFO L168 Benchmark]: Witness Printer took 55.94 ms. Allocated memory is still 62.9 MB. Free memory was 29.9 MB in the beginning and 27.2 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-24 22:55:57,027 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14 ms. Allocated memory is still 48.2 MB. Free memory was 30.1 MB in the beginning and 30.1 MB in the end (delta: 63.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 345.04 ms. Allocated memory was 48.2 MB in the beginning and 62.9 MB in the end (delta: 14.7 MB). Free memory was 25.3 MB in the beginning and 44.7 MB in the end (delta: -19.4 MB). Peak memory consumption was 4.9 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 40.52 ms. Allocated memory is still 62.9 MB. Free memory was 44.4 MB in the beginning and 43.1 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 28.84 ms. Allocated memory is still 62.9 MB. Free memory was 43.1 MB in the beginning and 42.0 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 4437.70 ms. Allocated memory is still 62.9 MB. Free memory was 42.0 MB in the beginning and 30.5 MB in the end (delta: 11.5 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 454536.15 ms. Allocated memory is still 62.9 MB. Free memory was 30.0 MB in the beginning and 29.9 MB in the end (delta: 180.8 kB). Peak memory consumption was 2.4 MB. Max. memory is 16.1 GB. * Witness Printer took 55.94 ms. Allocated memory is still 62.9 MB. Free memory was 29.9 MB in the beginning and 27.2 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 3]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 16]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 14 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 454.4s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 236.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 17 SDtfs, 5 SDslu, 14 SDs, 0 SdLazy, 17 SolverSat, 0 SolverUnsat, 6 SolverUnknown, 0 SolverNotchecked, 15.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 53 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 16 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 389.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=14occurred 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, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 2 LocationsWithAnnotation, 2 PreInvPairs, 4 NumberOfFragments, 2 HoareAnnotationTreeSize, 2 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 2 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 1.2s SatisfiabilityAnalysisTime, 215.3s InterpolantComputationTime, 24 NumberOfCodeBlocks, 24 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 42 ConstructedInterpolants, 8 QuantifiedInterpolants, 5159 SizeOfPredicates, 14 NumberOfNonLiveVariables, 99 ConjunctsInSsa, 19 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! [MP z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forcibly destroying the process Received shutdown request...