./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/float-benchs/interpolation.c.p+cfa-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 88b5e43d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/float-benchs/interpolation.c.p+cfa-reducer.c -s /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash a489919c33568e9fb270076fed14bc2a86abb299 ........................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/float-benchs/interpolation.c.p+cfa-reducer.c -s /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash a489919c33568e9fb270076fed14bc2a86abb299 ................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000)Received EOF on stdin. No stderr output. --- Real Ultimate output --- This is Ultimate 0.2.0-88b5e43 [2020-11-23 23:24:55,252 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-23 23:24:55,255 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-23 23:24:55,321 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-23 23:24:55,322 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-23 23:24:55,329 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-23 23:24:55,335 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-23 23:24:55,341 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-23 23:24:55,345 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-23 23:24:55,353 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-23 23:24:55,355 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-23 23:24:55,358 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-23 23:24:55,359 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-23 23:24:55,362 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-23 23:24:55,364 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-23 23:24:55,368 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-23 23:24:55,371 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-23 23:24:55,376 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-23 23:24:55,381 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-23 23:24:55,387 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-23 23:24:55,390 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-23 23:24:55,392 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-23 23:24:55,396 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-23 23:24:55,397 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-23 23:24:55,409 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-23 23:24:55,409 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-23 23:24:55,410 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-23 23:24:55,412 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-23 23:24:55,413 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-23 23:24:55,415 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-23 23:24:55,416 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-23 23:24:55,417 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-23 23:24:55,420 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-23 23:24:55,421 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-23 23:24:55,423 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-23 23:24:55,423 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-23 23:24:55,424 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-23 23:24:55,424 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-23 23:24:55,425 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-23 23:24:55,427 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-23 23:24:55,428 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-23 23:24:55,430 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-23 23:24:55,503 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-23 23:24:55,503 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-23 23:24:55,508 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-23 23:24:55,508 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-23 23:24:55,508 INFO L138 SettingsManager]: * Use SBE=true [2020-11-23 23:24:55,508 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-23 23:24:55,509 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-23 23:24:55,511 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-23 23:24:55,511 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-23 23:24:55,511 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-23 23:24:55,512 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-23 23:24:55,512 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-23 23:24:55,512 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-23 23:24:55,512 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-23 23:24:55,512 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-23 23:24:55,513 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-23 23:24:55,513 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-23 23:24:55,516 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-23 23:24:55,516 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-23 23:24:55,517 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-23 23:24:55,517 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-23 23:24:55,517 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-23 23:24:55,517 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-23 23:24:55,518 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-23 23:24:55,518 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-23 23:24:55,521 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-23 23:24:55,521 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-23 23:24:55,521 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-23 23:24:55,522 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-23 23:24:55,522 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a489919c33568e9fb270076fed14bc2a86abb299 [2020-11-23 23:24:55,973 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-23 23:24:56,019 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-23 23:24:56,025 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-23 23:24:56,027 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-23 23:24:56,029 INFO L275 PluginConnector]: CDTParser initialized [2020-11-23 23:24:56,030 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-benchs/interpolation.c.p+cfa-reducer.c [2020-11-23 23:24:56,117 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c1c5a26bd/8f8fd06ef37140a8b85f803defccbde6/FLAG816030062 [2020-11-23 23:24:56,855 INFO L306 CDTParser]: Found 1 translation units. [2020-11-23 23:24:56,856 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-benchs/interpolation.c.p+cfa-reducer.c [2020-11-23 23:24:56,869 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c1c5a26bd/8f8fd06ef37140a8b85f803defccbde6/FLAG816030062 [2020-11-23 23:24:57,155 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c1c5a26bd/8f8fd06ef37140a8b85f803defccbde6 [2020-11-23 23:24:57,159 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-23 23:24:57,166 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-23 23:24:57,168 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-23 23:24:57,168 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-23 23:24:57,173 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-23 23:24:57,174 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 11:24:57" (1/1) ... [2020-11-23 23:24:57,178 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3ee2ac2f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:24:57, skipping insertion in model container [2020-11-23 23:24:57,178 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 11:24:57" (1/1) ... [2020-11-23 23:24:57,190 INFO L146 MainTranslator]: Starting translation in SV-COMP mode [2020-11-23 23:24:57,222 INFO L179 MainTranslator]: Built tables and reachable declarations [2020-11-23 23:24:57,419 INFO L211 PostProcessor]: Analyzing one entry point: main [2020-11-23 23:24:57,431 INFO L212 MainTranslator]: Completed pre-run [2020-11-23 23:24:57,472 INFO L211 PostProcessor]: Analyzing one entry point: main [2020-11-23 23:24:57,495 INFO L217 MainTranslator]: Completed translation [2020-11-23 23:24:57,496 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:24:57 WrapperNode [2020-11-23 23:24:57,496 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-23 23:24:57,498 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-23 23:24:57,498 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-23 23:24:57,498 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-23 23:24:57,508 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:24:57" (1/1) ... [2020-11-23 23:24:57,519 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:24:57" (1/1) ... [2020-11-23 23:24:57,546 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-23 23:24:57,547 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-23 23:24:57,547 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-23 23:24:57,548 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-23 23:24:57,558 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:24:57" (1/1) ... [2020-11-23 23:24:57,559 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:24:57" (1/1) ... [2020-11-23 23:24:57,562 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:24:57" (1/1) ... [2020-11-23 23:24:57,562 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:24:57" (1/1) ... [2020-11-23 23:24:57,578 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:24:57" (1/1) ... [2020-11-23 23:24:57,583 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:24:57" (1/1) ... [2020-11-23 23:24:57,589 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:24:57" (1/1) ... [2020-11-23 23:24:57,611 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-23 23:24:57,613 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-23 23:24:57,613 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-23 23:24:57,613 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-23 23:24:57,617 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:24:57" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-23 23:24:57,737 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-23 23:24:57,738 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-23 23:24:57,738 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-11-23 23:24:57,738 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-23 23:24:57,738 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-23 23:24:57,739 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2020-11-23 23:24:57,739 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-23 23:24:58,406 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-23 23:24:58,407 INFO L298 CfgBuilder]: Removed 6 assume(true) statements. [2020-11-23 23:24:58,410 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 11:24:58 BoogieIcfgContainer [2020-11-23 23:24:58,410 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-23 23:24:58,413 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-23 23:24:58,413 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-23 23:24:58,418 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-23 23:24:58,419 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 11:24:57" (1/3) ... [2020-11-23 23:24:58,420 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41c3a4ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 11:24:58, skipping insertion in model container [2020-11-23 23:24:58,421 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:24:57" (2/3) ... [2020-11-23 23:24:58,422 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41c3a4ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 11:24:58, skipping insertion in model container [2020-11-23 23:24:58,422 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 11:24:58" (3/3) ... [2020-11-23 23:24:58,425 INFO L111 eAbstractionObserver]: Analyzing ICFG interpolation.c.p+cfa-reducer.c [2020-11-23 23:24:58,442 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-23 23:24:58,450 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-23 23:24:58,469 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-23 23:24:58,503 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-23 23:24:58,504 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-23 23:24:58,504 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-23 23:24:58,504 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-23 23:24:58,504 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-23 23:24:58,505 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-23 23:24:58,505 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-23 23:24:58,505 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-23 23:24:58,523 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states. [2020-11-23 23:24:58,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-23 23:24:58,531 INFO L414 BasicCegarLoop]: Found error trace [2020-11-23 23:24:58,533 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-23 23:24:58,533 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-23 23:24:58,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-23 23:24:58,542 INFO L82 PathProgramCache]: Analyzing trace with hash 1858928720, now seen corresponding path program 1 times [2020-11-23 23:24:58,555 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-23 23:24:58,556 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [420270875] [2020-11-23 23:24:58,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-23 23:24:58,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-23 23:24:58,813 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-23 23:24:58,814 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [420270875] [2020-11-23 23:24:58,816 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-23 23:24:58,816 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-23 23:24:58,817 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [588259477] [2020-11-23 23:24:58,823 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-23 23:24:58,824 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-23 23:24:58,842 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-23 23:24:58,844 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-23 23:24:58,847 INFO L87 Difference]: Start difference. First operand 20 states. Second operand 5 states. [2020-11-23 23:24:58,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-23 23:24:58,974 INFO L93 Difference]: Finished difference Result 52 states and 62 transitions. [2020-11-23 23:24:58,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-23 23:24:58,976 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-11-23 23:24:58,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-23 23:24:58,987 INFO L225 Difference]: With dead ends: 52 [2020-11-23 23:24:58,987 INFO L226 Difference]: Without dead ends: 27 [2020-11-23 23:24:58,992 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-11-23 23:24:59,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2020-11-23 23:24:59,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 16. [2020-11-23 23:24:59,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2020-11-23 23:24:59,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 20 transitions. [2020-11-23 23:24:59,036 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 20 transitions. Word has length 12 [2020-11-23 23:24:59,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-23 23:24:59,037 INFO L481 AbstractCegarLoop]: Abstraction has 16 states and 20 transitions. [2020-11-23 23:24:59,037 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-23 23:24:59,037 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 20 transitions. [2020-11-23 23:24:59,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-23 23:24:59,038 INFO L414 BasicCegarLoop]: Found error trace [2020-11-23 23:24:59,038 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-23 23:24:59,039 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-23 23:24:59,039 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-23 23:24:59,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-23 23:24:59,041 INFO L82 PathProgramCache]: Analyzing trace with hash 1877846005, now seen corresponding path program 1 times [2020-11-23 23:24:59,041 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-23 23:24:59,042 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1727109545] [2020-11-23 23:24:59,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-23 23:24:59,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-23 23:24:59,112 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-23 23:24:59,112 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1727109545] [2020-11-23 23:24:59,113 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-23 23:24:59,113 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-23 23:24:59,113 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [415433901] [2020-11-23 23:24:59,115 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-23 23:24:59,116 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-23 23:24:59,117 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-23 23:24:59,117 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-23 23:24:59,118 INFO L87 Difference]: Start difference. First operand 16 states and 20 transitions. Second operand 3 states. [2020-11-23 23:24:59,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-23 23:24:59,138 INFO L93 Difference]: Finished difference Result 34 states and 40 transitions. [2020-11-23 23:24:59,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-23 23:24:59,139 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 12 [2020-11-23 23:24:59,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-23 23:24:59,140 INFO L225 Difference]: With dead ends: 34 [2020-11-23 23:24:59,140 INFO L226 Difference]: Without dead ends: 26 [2020-11-23 23:24:59,142 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-23 23:24:59,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-11-23 23:24:59,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 17. [2020-11-23 23:24:59,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2020-11-23 23:24:59,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 21 transitions. [2020-11-23 23:24:59,148 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 21 transitions. Word has length 12 [2020-11-23 23:24:59,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-23 23:24:59,149 INFO L481 AbstractCegarLoop]: Abstraction has 17 states and 21 transitions. [2020-11-23 23:24:59,149 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-23 23:24:59,149 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 21 transitions. [2020-11-23 23:24:59,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-11-23 23:24:59,150 INFO L414 BasicCegarLoop]: Found error trace [2020-11-23 23:24:59,150 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-23 23:24:59,151 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-23 23:24:59,151 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-23 23:24:59,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-23 23:24:59,152 INFO L82 PathProgramCache]: Analyzing trace with hash 12049044, now seen corresponding path program 1 times [2020-11-23 23:24:59,152 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-23 23:24:59,153 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1447989986] [2020-11-23 23:24:59,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-23 23:24:59,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-23 23:24:59,179 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-23 23:24:59,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-23 23:24:59,214 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-23 23:24:59,245 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-23 23:24:59,245 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-23 23:24:59,246 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-23 23:24:59,294 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 11:24:59 BoogieIcfgContainer [2020-11-23 23:24:59,297 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-23 23:24:59,299 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-23 23:24:59,299 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-23 23:24:59,299 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-23 23:24:59,300 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 11:24:58" (3/4) ... [2020-11-23 23:24:59,304 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-11-23 23:24:59,305 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-23 23:24:59,310 INFO L168 Benchmark]: Toolchain (without parser) took 2146.78 ms. Allocated memory was 37.7 MB in the beginning and 56.6 MB in the end (delta: 18.9 MB). Free memory was 17.8 MB in the beginning and 36.9 MB in the end (delta: -19.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-23 23:24:59,312 INFO L168 Benchmark]: CDTParser took 0.47 ms. Allocated memory is still 37.7 MB. Free memory was 24.9 MB in the beginning and 24.9 MB in the end (delta: 39.8 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-23 23:24:59,314 INFO L168 Benchmark]: CACSL2BoogieTranslator took 328.54 ms. Allocated memory is still 37.7 MB. Free memory was 17.1 MB in the beginning and 22.6 MB in the end (delta: -5.5 MB). Peak memory consumption was 3.3 MB. Max. memory is 16.1 GB. [2020-11-23 23:24:59,316 INFO L168 Benchmark]: Boogie Procedure Inliner took 48.73 ms. Allocated memory is still 37.7 MB. Free memory was 22.6 MB in the beginning and 20.9 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-23 23:24:59,318 INFO L168 Benchmark]: Boogie Preprocessor took 64.65 ms. Allocated memory was 37.7 MB in the beginning and 46.1 MB in the end (delta: 8.4 MB). Free memory was 20.9 MB in the beginning and 31.4 MB in the end (delta: -10.5 MB). Peak memory consumption was 2.3 MB. Max. memory is 16.1 GB. [2020-11-23 23:24:59,327 INFO L168 Benchmark]: RCFGBuilder took 797.92 ms. Allocated memory is still 46.1 MB. Free memory was 31.4 MB in the beginning and 28.4 MB in the end (delta: 3.0 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-11-23 23:24:59,330 INFO L168 Benchmark]: TraceAbstraction took 885.14 ms. Allocated memory was 46.1 MB in the beginning and 56.6 MB in the end (delta: 10.5 MB). Free memory was 27.9 MB in the beginning and 37.2 MB in the end (delta: -9.2 MB). Peak memory consumption was 13.8 MB. Max. memory is 16.1 GB. [2020-11-23 23:24:59,331 INFO L168 Benchmark]: Witness Printer took 7.32 ms. Allocated memory is still 56.6 MB. Free memory was 37.2 MB in the beginning and 36.9 MB in the end (delta: 315.3 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-23 23:24:59,344 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.47 ms. Allocated memory is still 37.7 MB. Free memory was 24.9 MB in the beginning and 24.9 MB in the end (delta: 39.8 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 328.54 ms. Allocated memory is still 37.7 MB. Free memory was 17.1 MB in the beginning and 22.6 MB in the end (delta: -5.5 MB). Peak memory consumption was 3.3 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 48.73 ms. Allocated memory is still 37.7 MB. Free memory was 22.6 MB in the beginning and 20.9 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 64.65 ms. Allocated memory was 37.7 MB in the beginning and 46.1 MB in the end (delta: 8.4 MB). Free memory was 20.9 MB in the beginning and 31.4 MB in the end (delta: -10.5 MB). Peak memory consumption was 2.3 MB. Max. memory is 16.1 GB. * RCFGBuilder took 797.92 ms. Allocated memory is still 46.1 MB. Free memory was 31.4 MB in the beginning and 28.4 MB in the end (delta: 3.0 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 885.14 ms. Allocated memory was 46.1 MB in the beginning and 56.6 MB in the end (delta: 10.5 MB). Free memory was 27.9 MB in the beginning and 37.2 MB in the end (delta: -9.2 MB). Peak memory consumption was 13.8 MB. Max. memory is 16.1 GB. * Witness Printer took 7.32 ms. Allocated memory is still 56.6 MB. Free memory was 37.2 MB in the beginning and 36.9 MB in the end (delta: 315.3 kB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 4]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOAT_SMTComparisonOperation at line 33, overapproximation of someBinaryArithmeticFLOAT_SMToperation at line 36, overapproximation of to_real at line 17, overapproximation of someBinaryDOUBLE_SMTComparisonOperation at line 38. Possible FailurePath: [L1] int __return_main; VAL [__return_main=0] [L14] int main__i; [L15] float main__z; [L16] float main__t; [L17] float main__min[5] = { 5, 10, 12, 30, 150 }; [L18] float main__max[5] = { 10, 12, 30, 150, 300 }; [L19] main__t = __VERIFIER_nondet_float() [L20] int main____CPAchecker_TMP_0; [L21] EXPR main__min[0] VAL [__return_main=0] [L21] COND TRUE main__t >= (main__min[0]) [L23] EXPR main__max[4UL] VAL [__return_main=0] [L23] COND TRUE main__t <= (main__max[4UL]) [L25] main____CPAchecker_TMP_0 = 1 VAL [__return_main=0] [L27] COND TRUE main____CPAchecker_TMP_0 != 0 [L29] main__i = 0 VAL [__return_main=0] [L31] COND TRUE main__i < 5UL [L33] EXPR main__max[main__i] VAL [__return_main=0] [L33] COND TRUE main__t <= (main__max[main__i]) [L36] EXPR main__min[main__i] [L36] EXPR main__max[main__i] [L36] EXPR main__min[main__i] [L36] main__z = (main__t - (main__min[main__i])) / ((main__max[main__i]) - (main__min[main__i])) [L37] int main____CPAchecker_TMP_1; VAL [__return_main=0] [L38] COND FALSE !(main__z >= 0.0) VAL [__return_main=0] [L63] main____CPAchecker_TMP_1 = 0 VAL [__return_main=0] [L45] int __tmp_1; [L46] __tmp_1 = main____CPAchecker_TMP_1 [L47] int __VERIFIER_assert__cond; [L48] __VERIFIER_assert__cond = __tmp_1 VAL [__return_main=0] [L49] COND TRUE __VERIFIER_assert__cond == 0 VAL [__return_main=0] [L4] __assert_fail("0", "interpolation.c.p+cfa-reducer.c", 4, "reach_error") VAL [__return_main=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 20 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.7s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 42 SDtfs, 49 SDslu, 76 SDs, 0 SdLazy, 24 SolverSat, 3 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=20occurred 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, 2 MinimizatonAttempts, 20 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 37 NumberOfCodeBlocks, 37 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 22 ConstructedInterpolants, 0 QuantifiedInterpolants, 352 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 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 0.2.0-88b5e43 [2020-11-23 23:25:02,231 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-23 23:25:02,236 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-23 23:25:02,300 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2020-11-23 23:25:02,396 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-23 23:25:02,397 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-23 23:25:02,400 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-23 23:25:02,401 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-23 23:25:02,403 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-23 23:25:02,411 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-23 23:25:02,412 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-23 23:25:02,413 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-23 23:25:02,413 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-23 23:25:02,416 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-23 23:25:02,417 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-23 23:25:02,418 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2020-11-23 23:25:02,479 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-23 23:25:02,480 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-23 23:25:02,484 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-23 23:25:02,485 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-23 23:25:02,485 INFO L138 SettingsManager]: * Use SBE=true [2020-11-23 23:25:02,486 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-23 23:25:02,486 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-23 23:25:02,486 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-23 23:25:02,486 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-23 23:25:02,487 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-23 23:25:02,488 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-23 23:25:02,488 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-23 23:25:02,489 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-11-23 23:25:02,489 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-11-23 23:25:02,489 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-23 23:25:02,489 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-23 23:25:02,490 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-23 23:25:02,490 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-23 23:25:02,490 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-23 23:25:02,491 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-23 23:25:02,491 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-23 23:25:02,491 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-23 23:25:02,492 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-23 23:25:02,492 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-23 23:25:02,492 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-23 23:25:02,492 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-23 23:25:02,493 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2020-11-23 23:25:02,493 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-11-23 23:25:02,493 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-23 23:25:02,493 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-23 23:25:02,494 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-23 23:25:02,494 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a489919c33568e9fb270076fed14bc2a86abb299 [2020-11-23 23:25:02,940 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-23 23:25:02,977 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-23 23:25:02,983 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-23 23:25:02,985 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-23 23:25:02,986 INFO L275 PluginConnector]: CDTParser initialized [2020-11-23 23:25:02,987 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-benchs/interpolation.c.p+cfa-reducer.c [2020-11-23 23:25:03,089 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/21ffb873a/71d7ae8d08394f1e8cfeba289404bde4/FLAG8fe3d9907 [2020-11-23 23:25:03,794 INFO L306 CDTParser]: Found 1 translation units. [2020-11-23 23:25:03,795 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-benchs/interpolation.c.p+cfa-reducer.c [2020-11-23 23:25:03,804 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/21ffb873a/71d7ae8d08394f1e8cfeba289404bde4/FLAG8fe3d9907 [2020-11-23 23:25:04,120 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/21ffb873a/71d7ae8d08394f1e8cfeba289404bde4 [2020-11-23 23:25:04,136 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-23 23:25:04,146 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-23 23:25:04,152 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-23 23:25:04,152 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-23 23:25:04,156 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-23 23:25:04,158 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 11:25:04" (1/1) ... [2020-11-23 23:25:04,162 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@26f846b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:25:04, skipping insertion in model container [2020-11-23 23:25:04,163 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 11:25:04" (1/1) ... [2020-11-23 23:25:04,172 INFO L146 MainTranslator]: Starting translation in SV-COMP mode [2020-11-23 23:25:04,198 INFO L179 MainTranslator]: Built tables and reachable declarations [2020-11-23 23:25:04,450 INFO L211 PostProcessor]: Analyzing one entry point: main [2020-11-23 23:25:04,470 INFO L212 MainTranslator]: Completed pre-run [2020-11-23 23:25:04,510 INFO L211 PostProcessor]: Analyzing one entry point: main [2020-11-23 23:25:04,541 INFO L217 MainTranslator]: Completed translation [2020-11-23 23:25:04,542 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:25:04 WrapperNode [2020-11-23 23:25:04,543 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-23 23:25:04,545 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-23 23:25:04,545 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-23 23:25:04,545 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-23 23:25:04,555 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:25:04" (1/1) ... [2020-11-23 23:25:04,569 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:25:04" (1/1) ... [2020-11-23 23:25:04,598 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-23 23:25:04,599 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-23 23:25:04,600 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-23 23:25:04,600 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-23 23:25:04,611 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:25:04" (1/1) ... [2020-11-23 23:25:04,612 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:25:04" (1/1) ... [2020-11-23 23:25:04,622 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:25:04" (1/1) ... [2020-11-23 23:25:04,623 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:25:04" (1/1) ... [2020-11-23 23:25:04,634 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:25:04" (1/1) ... [2020-11-23 23:25:04,637 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:25:04" (1/1) ... [2020-11-23 23:25:04,639 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:25:04" (1/1) ... [2020-11-23 23:25:04,644 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-23 23:25:04,647 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-23 23:25:04,648 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-23 23:25:04,648 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-23 23:25:04,652 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:25:04" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-23 23:25:04,750 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE4 [2020-11-23 23:25:04,752 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-11-23 23:25:04,752 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-23 23:25:04,753 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4 [2020-11-23 23:25:04,754 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-23 23:25:04,754 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-23 23:25:04,755 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.float_to_bitvec_FLOAT [2020-11-23 23:25:04,756 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-23 23:25:06,867 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-23 23:25:06,867 INFO L298 CfgBuilder]: Removed 6 assume(true) statements. [2020-11-23 23:25:06,869 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 11:25:06 BoogieIcfgContainer [2020-11-23 23:25:06,870 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-23 23:25:06,872 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-23 23:25:06,872 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-23 23:25:06,877 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-23 23:25:06,877 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 11:25:04" (1/3) ... [2020-11-23 23:25:06,879 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2362b36d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 11:25:06, skipping insertion in model container [2020-11-23 23:25:06,879 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:25:04" (2/3) ... [2020-11-23 23:25:06,880 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2362b36d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 11:25:06, skipping insertion in model container [2020-11-23 23:25:06,880 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 11:25:06" (3/3) ... [2020-11-23 23:25:06,882 INFO L111 eAbstractionObserver]: Analyzing ICFG interpolation.c.p+cfa-reducer.c [2020-11-23 23:25:06,896 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-23 23:25:06,903 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-23 23:25:06,917 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-23 23:25:06,951 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-23 23:25:06,951 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-23 23:25:06,951 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-23 23:25:06,952 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-23 23:25:06,952 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-23 23:25:06,952 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-23 23:25:06,952 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-23 23:25:06,953 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-23 23:25:06,969 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states. [2020-11-23 23:25:06,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-23 23:25:06,976 INFO L414 BasicCegarLoop]: Found error trace [2020-11-23 23:25:06,977 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-23 23:25:06,977 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-23 23:25:06,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-23 23:25:06,985 INFO L82 PathProgramCache]: Analyzing trace with hash 1858928720, now seen corresponding path program 1 times [2020-11-23 23:25:07,000 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-23 23:25:07,001 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1044802535] [2020-11-23 23:25:07,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2020-11-23 23:25:07,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-23 23:25:07,655 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-23 23:25:07,663 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-23 23:25:07,734 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-23 23:25:07,735 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-23 23:25:07,760 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-23 23:25:07,762 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1044802535] [2020-11-23 23:25:07,763 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-23 23:25:07,764 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2020-11-23 23:25:07,765 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1024233100] [2020-11-23 23:25:07,771 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-23 23:25:07,772 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-23 23:25:07,788 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-23 23:25:07,789 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-23 23:25:07,792 INFO L87 Difference]: Start difference. First operand 20 states. Second operand 4 states. [2020-11-23 23:25:11,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-23 23:25:11,092 INFO L93 Difference]: Finished difference Result 56 states and 72 transitions. [2020-11-23 23:25:11,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-23 23:25:11,134 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-11-23 23:25:11,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-23 23:25:11,144 INFO L225 Difference]: With dead ends: 56 [2020-11-23 23:25:11,145 INFO L226 Difference]: Without dead ends: 35 [2020-11-23 23:25:11,149 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-23 23:25:11,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2020-11-23 23:25:11,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 19. [2020-11-23 23:25:11,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2020-11-23 23:25:11,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 25 transitions. [2020-11-23 23:25:11,193 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 25 transitions. Word has length 12 [2020-11-23 23:25:11,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-23 23:25:11,194 INFO L481 AbstractCegarLoop]: Abstraction has 19 states and 25 transitions. [2020-11-23 23:25:11,194 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-23 23:25:11,195 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 25 transitions. [2020-11-23 23:25:11,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-11-23 23:25:11,196 INFO L414 BasicCegarLoop]: Found error trace [2020-11-23 23:25:11,196 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-23 23:25:11,410 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-11-23 23:25:11,410 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-23 23:25:11,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-23 23:25:11,413 INFO L82 PathProgramCache]: Analyzing trace with hash -6868241, now seen corresponding path program 1 times [2020-11-23 23:25:11,414 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-23 23:25:11,414 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1665099864] [2020-11-23 23:25:11,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2020-11-23 23:25:11,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-23 23:25:11,982 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-23 23:25:11,984 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-23 23:25:12,028 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-23 23:25:12,029 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-23 23:25:12,124 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-23 23:25:12,125 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1665099864] [2020-11-23 23:25:12,125 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-23 23:25:12,125 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2020-11-23 23:25:12,125 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1229707812] [2020-11-23 23:25:12,128 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-23 23:25:12,128 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-23 23:25:12,130 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-23 23:25:12,131 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-23 23:25:12,131 INFO L87 Difference]: Start difference. First operand 19 states and 25 transitions. Second operand 6 states. [2020-11-23 23:25:13,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-23 23:25:13,205 INFO L93 Difference]: Finished difference Result 23 states and 28 transitions. [2020-11-23 23:25:13,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-23 23:25:13,207 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 13 [2020-11-23 23:25:13,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-23 23:25:13,209 INFO L225 Difference]: With dead ends: 23 [2020-11-23 23:25:13,209 INFO L226 Difference]: Without dead ends: 19 [2020-11-23 23:25:13,211 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-11-23 23:25:13,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2020-11-23 23:25:13,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2020-11-23 23:25:13,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2020-11-23 23:25:13,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 24 transitions. [2020-11-23 23:25:13,225 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 24 transitions. Word has length 13 [2020-11-23 23:25:13,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-23 23:25:13,226 INFO L481 AbstractCegarLoop]: Abstraction has 19 states and 24 transitions. [2020-11-23 23:25:13,226 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-23 23:25:13,228 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 24 transitions. [2020-11-23 23:25:13,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-11-23 23:25:13,230 INFO L414 BasicCegarLoop]: Found error trace [2020-11-23 23:25:13,232 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-23 23:25:13,447 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-11-23 23:25:13,447 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-23 23:25:13,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-23 23:25:13,450 INFO L82 PathProgramCache]: Analyzing trace with hash 12049044, now seen corresponding path program 1 times [2020-11-23 23:25:13,450 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-23 23:25:13,451 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1568482197] [2020-11-23 23:25:13,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2020-11-23 23:25:13,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-23 23:25:13,993 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 17 conjunts are in the unsatisfiable core [2020-11-23 23:25:13,997 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-23 23:25:14,591 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 49 [2020-11-23 23:25:14,798 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 55 [2020-11-23 23:25:15,165 WARN L193 SmtUtils]: Spent 250.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 57 [2020-11-23 23:25:18,375 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-11-23 23:25:18,376 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 208 treesize of output 120 [2020-11-23 23:25:18,379 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-11-23 23:25:18,386 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-11-23 23:25:18,389 INFO L545 ElimStorePlain]: Start of recursive call 2: 3 dim-0 vars, End of recursive call: 3 dim-0 vars, and 1 xjuncts. [2020-11-23 23:25:50,838 WARN L193 SmtUtils]: Spent 32.45 s on a formula simplification. DAG size of input: 62 DAG size of output: 60 [2020-11-23 23:25:50,840 INFO L625 ElimStorePlain]: treesize reduction 4, result has 97.3 percent of original size [2020-11-23 23:25:50,871 INFO L545 ElimStorePlain]: Start of recursive call 1: 5 dim-0 vars, 1 dim-2 vars, End of recursive call: 6 dim-0 vars, and 1 xjuncts. [2020-11-23 23:25:50,871 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 6 variables, input treesize:235, output treesize:139 [2020-11-23 23:26:24,103 WARN L193 SmtUtils]: Spent 13.41 s on a formula simplification. DAG size of input: 59 DAG size of output: 50 [2020-11-23 23:26:30,353 WARN L838 $PredicateComparison]: unable to prove that (exists ((ULTIMATE.start_main_~main__z~0 (_ BitVec 32)) (|v_ULTIMATE.start_main_#t~nondet25_6| (_ BitVec 32)) (|v_ULTIMATE.start_main_#t~nondet22_6| (_ BitVec 32)) (ULTIMATE.start_main_~main__t~0 (_ BitVec 32)) (v_arrayElimCell_3 (_ BitVec 32)) (v_arrayElimCell_2 (_ BitVec 32))) (let ((.cse1 (fp ((_ extract 31 31) ULTIMATE.start_main_~main__t~0) ((_ extract 30 23) ULTIMATE.start_main_~main__t~0) ((_ extract 22 0) ULTIMATE.start_main_~main__t~0))) (.cse0 (fp ((_ extract 31 31) |v_ULTIMATE.start_main_#t~nondet22_6|) ((_ extract 30 23) |v_ULTIMATE.start_main_#t~nondet22_6|) ((_ extract 22 0) |v_ULTIMATE.start_main_#t~nondet22_6|))) (.cse4 (fp ((_ extract 31 31) |v_ULTIMATE.start_main_#t~nondet25_6|) ((_ extract 30 23) |v_ULTIMATE.start_main_#t~nondet25_6|) ((_ extract 22 0) |v_ULTIMATE.start_main_#t~nondet25_6|))) (.cse3 (fp ((_ extract 31 31) v_arrayElimCell_3) ((_ extract 30 23) v_arrayElimCell_3) ((_ extract 22 0) v_arrayElimCell_3))) (.cse5 (fp ((_ extract 31 31) ULTIMATE.start_main_~main__z~0) ((_ extract 30 23) ULTIMATE.start_main_~main__z~0) ((_ extract 22 0) ULTIMATE.start_main_~main__z~0))) (.cse2 (fp ((_ extract 31 31) v_arrayElimCell_2) ((_ extract 30 23) v_arrayElimCell_2) ((_ extract 22 0) v_arrayElimCell_2)))) (and (= .cse0 (fp.sub roundNearestTiesToEven .cse1 .cse2)) (fp.leq .cse1 .cse3) (= .cse4 (fp.sub roundNearestTiesToEven .cse3 .cse2)) (fp.geq .cse1 .cse2) (= .cse5 (fp.div roundNearestTiesToEven .cse0 .cse4)) (= ((_ to_fp 8 24) roundNearestTiesToEven (_ bv10 32)) .cse3) (not (fp.geq ((_ to_fp 11 53) roundNearestTiesToEven .cse5) (_ +zero 11 53))) (= ((_ to_fp 8 24) roundNearestTiesToEven (_ bv5 32)) .cse2)))) is different from false [2020-11-23 23:26:32,394 WARN L860 $PredicateComparison]: unable to prove that (exists ((ULTIMATE.start_main_~main__z~0 (_ BitVec 32)) (|v_ULTIMATE.start_main_#t~nondet25_6| (_ BitVec 32)) (|v_ULTIMATE.start_main_#t~nondet22_6| (_ BitVec 32)) (ULTIMATE.start_main_~main__t~0 (_ BitVec 32)) (v_arrayElimCell_3 (_ BitVec 32)) (v_arrayElimCell_2 (_ BitVec 32))) (let ((.cse1 (fp ((_ extract 31 31) ULTIMATE.start_main_~main__t~0) ((_ extract 30 23) ULTIMATE.start_main_~main__t~0) ((_ extract 22 0) ULTIMATE.start_main_~main__t~0))) (.cse0 (fp ((_ extract 31 31) |v_ULTIMATE.start_main_#t~nondet22_6|) ((_ extract 30 23) |v_ULTIMATE.start_main_#t~nondet22_6|) ((_ extract 22 0) |v_ULTIMATE.start_main_#t~nondet22_6|))) (.cse4 (fp ((_ extract 31 31) |v_ULTIMATE.start_main_#t~nondet25_6|) ((_ extract 30 23) |v_ULTIMATE.start_main_#t~nondet25_6|) ((_ extract 22 0) |v_ULTIMATE.start_main_#t~nondet25_6|))) (.cse3 (fp ((_ extract 31 31) v_arrayElimCell_3) ((_ extract 30 23) v_arrayElimCell_3) ((_ extract 22 0) v_arrayElimCell_3))) (.cse5 (fp ((_ extract 31 31) ULTIMATE.start_main_~main__z~0) ((_ extract 30 23) ULTIMATE.start_main_~main__z~0) ((_ extract 22 0) ULTIMATE.start_main_~main__z~0))) (.cse2 (fp ((_ extract 31 31) v_arrayElimCell_2) ((_ extract 30 23) v_arrayElimCell_2) ((_ extract 22 0) v_arrayElimCell_2)))) (and (= .cse0 (fp.sub roundNearestTiesToEven .cse1 .cse2)) (fp.leq .cse1 .cse3) (= .cse4 (fp.sub roundNearestTiesToEven .cse3 .cse2)) (fp.geq .cse1 .cse2) (= .cse5 (fp.div roundNearestTiesToEven .cse0 .cse4)) (= ((_ to_fp 8 24) roundNearestTiesToEven (_ bv10 32)) .cse3) (not (fp.geq ((_ to_fp 11 53) roundNearestTiesToEven .cse5) (_ +zero 11 53))) (= ((_ to_fp 8 24) roundNearestTiesToEven (_ bv5 32)) .cse2)))) is different from true [2020-11-23 23:26:44,847 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-23 23:26:44,848 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-23 23:26:49,659 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_#t~nondet25_6| (_ BitVec 32)) (|v_ULTIMATE.start_main_#t~nondet22_6| (_ BitVec 32)) (v_ULTIMATE.start_main_~main__z~0_10 (_ BitVec 32))) (let ((.cse4 (bvmul c_ULTIMATE.start_main_~main__i~0 (_ bv4 32)))) (let ((.cse0 (let ((.cse6 (select (select |c_#memory_int| |c_ULTIMATE.start_main_~#main__min~0.base|) (bvadd |c_ULTIMATE.start_main_~#main__min~0.offset| .cse4)))) (fp ((_ extract 31 31) .cse6) ((_ extract 30 23) .cse6) ((_ extract 22 0) .cse6)))) (.cse1 (fp ((_ extract 31 31) |v_ULTIMATE.start_main_#t~nondet22_6|) ((_ extract 30 23) |v_ULTIMATE.start_main_#t~nondet22_6|) ((_ extract 22 0) |v_ULTIMATE.start_main_#t~nondet22_6|))) (.cse2 (fp ((_ extract 31 31) |v_ULTIMATE.start_main_#t~nondet25_6|) ((_ extract 30 23) |v_ULTIMATE.start_main_#t~nondet25_6|) ((_ extract 22 0) |v_ULTIMATE.start_main_#t~nondet25_6|))) (.cse5 (fp ((_ extract 31 31) v_ULTIMATE.start_main_~main__z~0_10) ((_ extract 30 23) v_ULTIMATE.start_main_~main__z~0_10) ((_ extract 22 0) v_ULTIMATE.start_main_~main__z~0_10)))) (or (not (= (fp.sub c_~CRM (fp ((_ extract 31 31) c_ULTIMATE.start_main_~main__t~0) ((_ extract 30 23) c_ULTIMATE.start_main_~main__t~0) ((_ extract 22 0) c_ULTIMATE.start_main_~main__t~0)) .cse0) .cse1)) (not (= .cse2 (fp.sub c_~CRM (let ((.cse3 (select (select |c_#memory_int| |c_ULTIMATE.start_main_~#main__max~0.base|) (bvadd .cse4 |c_ULTIMATE.start_main_~#main__max~0.offset|)))) (fp ((_ extract 31 31) .cse3) ((_ extract 30 23) .cse3) ((_ extract 22 0) .cse3))) .cse0))) (not (= (fp.div c_~CRM .cse1 .cse2) .cse5)) (fp.geq ((_ to_fp 11 53) c_~CRM .cse5) (_ +zero 11 53)))))) is different from false [2020-11-23 23:26:53,649 WARN L860 $PredicateComparison]: unable to prove that (or (not (fp.leq (fp ((_ extract 31 31) c_ULTIMATE.start_main_~main__t~0) ((_ extract 30 23) c_ULTIMATE.start_main_~main__t~0) ((_ extract 22 0) c_ULTIMATE.start_main_~main__t~0)) (fp ((_ extract 31 31) |c_ULTIMATE.start_main_#t~mem20|) ((_ extract 30 23) |c_ULTIMATE.start_main_#t~mem20|) ((_ extract 22 0) |c_ULTIMATE.start_main_#t~mem20|)))) (forall ((|v_ULTIMATE.start_main_#t~nondet25_6| (_ BitVec 32)) (|v_ULTIMATE.start_main_#t~nondet22_6| (_ BitVec 32)) (v_ULTIMATE.start_main_~main__z~0_10 (_ BitVec 32))) (let ((.cse4 (bvmul c_ULTIMATE.start_main_~main__i~0 (_ bv4 32)))) (let ((.cse0 (let ((.cse6 (select (select |c_#memory_int| |c_ULTIMATE.start_main_~#main__min~0.base|) (bvadd |c_ULTIMATE.start_main_~#main__min~0.offset| .cse4)))) (fp ((_ extract 31 31) .cse6) ((_ extract 30 23) .cse6) ((_ extract 22 0) .cse6)))) (.cse1 (fp ((_ extract 31 31) |v_ULTIMATE.start_main_#t~nondet22_6|) ((_ extract 30 23) |v_ULTIMATE.start_main_#t~nondet22_6|) ((_ extract 22 0) |v_ULTIMATE.start_main_#t~nondet22_6|))) (.cse2 (fp ((_ extract 31 31) |v_ULTIMATE.start_main_#t~nondet25_6|) ((_ extract 30 23) |v_ULTIMATE.start_main_#t~nondet25_6|) ((_ extract 22 0) |v_ULTIMATE.start_main_#t~nondet25_6|))) (.cse5 (fp ((_ extract 31 31) v_ULTIMATE.start_main_~main__z~0_10) ((_ extract 30 23) v_ULTIMATE.start_main_~main__z~0_10) ((_ extract 22 0) v_ULTIMATE.start_main_~main__z~0_10)))) (or (not (= (fp.sub c_~CRM (fp ((_ extract 31 31) c_ULTIMATE.start_main_~main__t~0) ((_ extract 30 23) c_ULTIMATE.start_main_~main__t~0) ((_ extract 22 0) c_ULTIMATE.start_main_~main__t~0)) .cse0) .cse1)) (not (= .cse2 (fp.sub c_~CRM (let ((.cse3 (select (select |c_#memory_int| |c_ULTIMATE.start_main_~#main__max~0.base|) (bvadd .cse4 |c_ULTIMATE.start_main_~#main__max~0.offset|)))) (fp ((_ extract 31 31) .cse3) ((_ extract 30 23) .cse3) ((_ extract 22 0) .cse3))) .cse0))) (not (= (fp.div c_~CRM .cse1 .cse2) .cse5)) (fp.geq ((_ to_fp 11 53) c_~CRM .cse5) (_ +zero 11 53))))))) is different from true [2020-11-23 23:27:18,773 WARN L193 SmtUtils]: Spent 6.93 s on a formula simplification that was a NOOP. DAG size: 60 [2020-11-23 23:27:46,638 WARN L193 SmtUtils]: Spent 5.23 s on a formula simplification that was a NOOP. DAG size: 55 [2020-11-23 23:27:48,735 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse6 (fp ((_ extract 31 31) c_ULTIMATE.start_main_~main__t~0) ((_ extract 30 23) c_ULTIMATE.start_main_~main__t~0) ((_ extract 22 0) c_ULTIMATE.start_main_~main__t~0)))) (or (forall ((|v_ULTIMATE.start_main_#t~nondet25_6| (_ BitVec 32)) (|v_ULTIMATE.start_main_#t~nondet22_6| (_ BitVec 32)) (v_ULTIMATE.start_main_~main__z~0_10 (_ BitVec 32))) (let ((.cse2 (let ((.cse5 (select (select |c_#memory_int| |c_ULTIMATE.start_main_~#main__min~0.base|) |c_ULTIMATE.start_main_~#main__min~0.offset|))) (fp ((_ extract 31 31) .cse5) ((_ extract 30 23) .cse5) ((_ extract 22 0) .cse5)))) (.cse3 (fp ((_ extract 31 31) |v_ULTIMATE.start_main_#t~nondet22_6|) ((_ extract 30 23) |v_ULTIMATE.start_main_#t~nondet22_6|) ((_ extract 22 0) |v_ULTIMATE.start_main_#t~nondet22_6|))) (.cse0 (fp ((_ extract 31 31) |v_ULTIMATE.start_main_#t~nondet25_6|) ((_ extract 30 23) |v_ULTIMATE.start_main_#t~nondet25_6|) ((_ extract 22 0) |v_ULTIMATE.start_main_#t~nondet25_6|))) (.cse4 (fp ((_ extract 31 31) v_ULTIMATE.start_main_~main__z~0_10) ((_ extract 30 23) v_ULTIMATE.start_main_~main__z~0_10) ((_ extract 22 0) v_ULTIMATE.start_main_~main__z~0_10)))) (or (not (= .cse0 (fp.sub c_~CRM (let ((.cse1 (select (select |c_#memory_int| |c_ULTIMATE.start_main_~#main__max~0.base|) |c_ULTIMATE.start_main_~#main__max~0.offset|))) (fp ((_ extract 31 31) .cse1) ((_ extract 30 23) .cse1) ((_ extract 22 0) .cse1))) .cse2))) (not (= (fp.sub c_~CRM (fp ((_ extract 31 31) c_ULTIMATE.start_main_~main__t~0) ((_ extract 30 23) c_ULTIMATE.start_main_~main__t~0) ((_ extract 22 0) c_ULTIMATE.start_main_~main__t~0)) .cse2) .cse3)) (not (= (fp.div c_~CRM .cse3 .cse0) .cse4)) (fp.geq ((_ to_fp 11 53) c_~CRM .cse4) (_ +zero 11 53))))) (not (fp.leq .cse6 (let ((.cse7 (select (select |c_#memory_int| |c_ULTIMATE.start_main_~#main__max~0.base|) |c_ULTIMATE.start_main_~#main__max~0.offset|))) (fp ((_ extract 31 31) .cse7) ((_ extract 30 23) .cse7) ((_ extract 22 0) .cse7))))) (not (fp.leq .cse6 (fp ((_ extract 31 31) |c_ULTIMATE.start_main_#t~mem19|) ((_ extract 30 23) |c_ULTIMATE.start_main_#t~mem19|) ((_ extract 22 0) |c_ULTIMATE.start_main_#t~mem19|)))))) is different from true [2020-11-23 23:28:20,712 WARN L193 SmtUtils]: Spent 2.55 s on a formula simplification that was a NOOP. DAG size: 70 [2020-11-23 23:28:23,901 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification that was a NOOP. DAG size: 8 [2020-11-23 23:28:23,905 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-11-23 23:28:23,906 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 243 treesize of output 143 [2020-11-23 23:28:23,908 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-11-23 23:28:23,912 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-11-23 23:28:23,914 INFO L545 ElimStorePlain]: Start of recursive call 2: 3 dim-0 vars, End of recursive call: 3 dim-0 vars, and 1 xjuncts. [2020-11-23 23:29:48,310 WARN L193 SmtUtils]: Spent 1.41 m on a formula simplification. DAG size of input: 73 DAG size of output: 68 [2020-11-23 23:29:48,311 INFO L625 ElimStorePlain]: treesize reduction 21, result has 88.3 percent of original size [2020-11-23 23:29:48,330 INFO L545 ElimStorePlain]: Start of recursive call 1: 6 dim-0 vars, 1 dim-2 vars, End of recursive call: 7 dim-0 vars, and 1 xjuncts. [2020-11-23 23:29:48,331 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 7 variables, input treesize:279, output treesize:155 [2020-11-23 23:29:50,393 WARN L838 $PredicateComparison]: unable to prove that (or (forall ((v_arrayElimCell_5 (_ BitVec 32))) (not (= ((_ to_fp 8 24) c_~CRM (_ bv300 32)) (fp ((_ extract 31 31) v_arrayElimCell_5) ((_ extract 30 23) v_arrayElimCell_5) ((_ extract 22 0) v_arrayElimCell_5))))) (forall ((|v_ULTIMATE.start_main_#t~nondet25_6| (_ BitVec 32)) (|v_ULTIMATE.start_main_#t~nondet22_6| (_ BitVec 32)) (v_ULTIMATE.start_main_~main__z~0_10 (_ BitVec 32)) (v_arrayElimCell_6 (_ BitVec 32)) (v_arrayElimCell_4 (_ BitVec 32)) (ULTIMATE.start_main_~main__t~0 (_ BitVec 32))) (let ((.cse0 (fp ((_ extract 31 31) ULTIMATE.start_main_~main__t~0) ((_ extract 30 23) ULTIMATE.start_main_~main__t~0) ((_ extract 22 0) ULTIMATE.start_main_~main__t~0))) (.cse2 (fp ((_ extract 31 31) v_arrayElimCell_4) ((_ extract 30 23) v_arrayElimCell_4) ((_ extract 22 0) v_arrayElimCell_4))) (.cse3 (fp ((_ extract 31 31) |v_ULTIMATE.start_main_#t~nondet22_6|) ((_ extract 30 23) |v_ULTIMATE.start_main_#t~nondet22_6|) ((_ extract 22 0) |v_ULTIMATE.start_main_#t~nondet22_6|))) (.cse4 (fp ((_ extract 31 31) |v_ULTIMATE.start_main_#t~nondet25_6|) ((_ extract 30 23) |v_ULTIMATE.start_main_#t~nondet25_6|) ((_ extract 22 0) |v_ULTIMATE.start_main_#t~nondet25_6|))) (.cse5 (fp ((_ extract 31 31) v_ULTIMATE.start_main_~main__z~0_10) ((_ extract 30 23) v_ULTIMATE.start_main_~main__z~0_10) ((_ extract 22 0) v_ULTIMATE.start_main_~main__z~0_10))) (.cse1 (fp ((_ extract 31 31) v_arrayElimCell_6) ((_ extract 30 23) v_arrayElimCell_6) ((_ extract 22 0) v_arrayElimCell_6)))) (or (not (fp.leq .cse0 .cse1)) (not (= (fp.sub c_~CRM .cse0 .cse2) .cse3)) (not (= .cse2 ((_ to_fp 8 24) c_~CRM (_ bv5 32)))) (not (= (fp.sub c_~CRM .cse1 .cse2) .cse4)) (not (fp.geq .cse0 .cse2)) (not (= (fp.div c_~CRM .cse3 .cse4) .cse5)) (fp.geq ((_ to_fp 11 53) c_~CRM .cse5) (_ +zero 11 53)) (not (= .cse1 ((_ to_fp 8 24) c_~CRM (_ bv10 32)))))))) is different from false [2020-11-23 23:29:52,475 WARN L860 $PredicateComparison]: unable to prove that (or (forall ((v_arrayElimCell_5 (_ BitVec 32))) (not (= ((_ to_fp 8 24) c_~CRM (_ bv300 32)) (fp ((_ extract 31 31) v_arrayElimCell_5) ((_ extract 30 23) v_arrayElimCell_5) ((_ extract 22 0) v_arrayElimCell_5))))) (forall ((|v_ULTIMATE.start_main_#t~nondet25_6| (_ BitVec 32)) (|v_ULTIMATE.start_main_#t~nondet22_6| (_ BitVec 32)) (v_ULTIMATE.start_main_~main__z~0_10 (_ BitVec 32)) (v_arrayElimCell_6 (_ BitVec 32)) (v_arrayElimCell_4 (_ BitVec 32)) (ULTIMATE.start_main_~main__t~0 (_ BitVec 32))) (let ((.cse0 (fp ((_ extract 31 31) ULTIMATE.start_main_~main__t~0) ((_ extract 30 23) ULTIMATE.start_main_~main__t~0) ((_ extract 22 0) ULTIMATE.start_main_~main__t~0))) (.cse2 (fp ((_ extract 31 31) v_arrayElimCell_4) ((_ extract 30 23) v_arrayElimCell_4) ((_ extract 22 0) v_arrayElimCell_4))) (.cse3 (fp ((_ extract 31 31) |v_ULTIMATE.start_main_#t~nondet22_6|) ((_ extract 30 23) |v_ULTIMATE.start_main_#t~nondet22_6|) ((_ extract 22 0) |v_ULTIMATE.start_main_#t~nondet22_6|))) (.cse4 (fp ((_ extract 31 31) |v_ULTIMATE.start_main_#t~nondet25_6|) ((_ extract 30 23) |v_ULTIMATE.start_main_#t~nondet25_6|) ((_ extract 22 0) |v_ULTIMATE.start_main_#t~nondet25_6|))) (.cse5 (fp ((_ extract 31 31) v_ULTIMATE.start_main_~main__z~0_10) ((_ extract 30 23) v_ULTIMATE.start_main_~main__z~0_10) ((_ extract 22 0) v_ULTIMATE.start_main_~main__z~0_10))) (.cse1 (fp ((_ extract 31 31) v_arrayElimCell_6) ((_ extract 30 23) v_arrayElimCell_6) ((_ extract 22 0) v_arrayElimCell_6)))) (or (not (fp.leq .cse0 .cse1)) (not (= (fp.sub c_~CRM .cse0 .cse2) .cse3)) (not (= .cse2 ((_ to_fp 8 24) c_~CRM (_ bv5 32)))) (not (= (fp.sub c_~CRM .cse1 .cse2) .cse4)) (not (fp.geq .cse0 .cse2)) (not (= (fp.div c_~CRM .cse3 .cse4) .cse5)) (fp.geq ((_ to_fp 11 53) c_~CRM .cse5) (_ +zero 11 53)) (not (= .cse1 ((_ to_fp 8 24) c_~CRM (_ bv10 32)))))))) is different from true [2020-11-23 23:29:52,485 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-23 23:29:52,486 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1568482197] [2020-11-23 23:29:52,486 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-23 23:29:52,487 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [] total 18 [2020-11-23 23:29:52,487 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [555040252] [2020-11-23 23:29:52,489 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-11-23 23:29:52,490 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-23 23:29:52,491 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-11-23 23:29:52,492 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=119, Unknown=36, NotChecked=140, Total=342 [2020-11-23 23:29:52,495 INFO L87 Difference]: Start difference. First operand 19 states and 24 transitions. Second operand 19 states. [2020-11-23 23:30:02,492 WARN L838 $PredicateComparison]: unable to prove that (and (= roundNearestTiesToEven c_~CRM) (or (forall ((v_arrayElimCell_5 (_ BitVec 32))) (not (= ((_ to_fp 8 24) c_~CRM (_ bv300 32)) (fp ((_ extract 31 31) v_arrayElimCell_5) ((_ extract 30 23) v_arrayElimCell_5) ((_ extract 22 0) v_arrayElimCell_5))))) (forall ((|v_ULTIMATE.start_main_#t~nondet25_6| (_ BitVec 32)) (|v_ULTIMATE.start_main_#t~nondet22_6| (_ BitVec 32)) (v_ULTIMATE.start_main_~main__z~0_10 (_ BitVec 32)) (v_arrayElimCell_6 (_ BitVec 32)) (v_arrayElimCell_4 (_ BitVec 32)) (ULTIMATE.start_main_~main__t~0 (_ BitVec 32))) (let ((.cse0 (fp ((_ extract 31 31) ULTIMATE.start_main_~main__t~0) ((_ extract 30 23) ULTIMATE.start_main_~main__t~0) ((_ extract 22 0) ULTIMATE.start_main_~main__t~0))) (.cse2 (fp ((_ extract 31 31) v_arrayElimCell_4) ((_ extract 30 23) v_arrayElimCell_4) ((_ extract 22 0) v_arrayElimCell_4))) (.cse3 (fp ((_ extract 31 31) |v_ULTIMATE.start_main_#t~nondet22_6|) ((_ extract 30 23) |v_ULTIMATE.start_main_#t~nondet22_6|) ((_ extract 22 0) |v_ULTIMATE.start_main_#t~nondet22_6|))) (.cse4 (fp ((_ extract 31 31) |v_ULTIMATE.start_main_#t~nondet25_6|) ((_ extract 30 23) |v_ULTIMATE.start_main_#t~nondet25_6|) ((_ extract 22 0) |v_ULTIMATE.start_main_#t~nondet25_6|))) (.cse5 (fp ((_ extract 31 31) v_ULTIMATE.start_main_~main__z~0_10) ((_ extract 30 23) v_ULTIMATE.start_main_~main__z~0_10) ((_ extract 22 0) v_ULTIMATE.start_main_~main__z~0_10))) (.cse1 (fp ((_ extract 31 31) v_arrayElimCell_6) ((_ extract 30 23) v_arrayElimCell_6) ((_ extract 22 0) v_arrayElimCell_6)))) (or (not (fp.leq .cse0 .cse1)) (not (= (fp.sub c_~CRM .cse0 .cse2) .cse3)) (not (= .cse2 ((_ to_fp 8 24) c_~CRM (_ bv5 32)))) (not (= (fp.sub c_~CRM .cse1 .cse2) .cse4)) (not (fp.geq .cse0 .cse2)) (not (= (fp.div c_~CRM .cse3 .cse4) .cse5)) (fp.geq ((_ to_fp 11 53) c_~CRM .cse5) (_ +zero 11 53)) (not (= .cse1 ((_ to_fp 8 24) c_~CRM (_ bv10 32))))))))) is different from false [2020-11-23 23:30:05,227 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse2 (select (select |c_#memory_int| |c_ULTIMATE.start_main_~#main__min~0.base|) |c_ULTIMATE.start_main_~#main__min~0.offset|)) (.cse1 (select |c_#memory_int| |c_ULTIMATE.start_main_~#main__max~0.base|))) (and (= |c_ULTIMATE.start_main_~#main__min~0.offset| (_ bv0 32)) (= (let ((.cse0 (select .cse1 |c_ULTIMATE.start_main_~#main__max~0.offset|))) (fp ((_ extract 31 31) .cse0) ((_ extract 30 23) .cse0) ((_ extract 22 0) .cse0))) ((_ to_fp 8 24) c_~CRM (_ bv10 32))) (= (fp ((_ extract 31 31) .cse2) ((_ extract 30 23) .cse2) ((_ extract 22 0) .cse2)) ((_ to_fp 8 24) c_~CRM (_ bv5 32))) (= roundNearestTiesToEven c_~CRM) (= |c_ULTIMATE.start_main_#t~mem18| .cse2) (forall ((|v_ULTIMATE.start_main_#t~nondet25_6| (_ BitVec 32)) (|v_ULTIMATE.start_main_#t~nondet22_6| (_ BitVec 32)) (v_ULTIMATE.start_main_~main__z~0_10 (_ BitVec 32)) (ULTIMATE.start_main_~main__t~0 (_ BitVec 32))) (let ((.cse10 (select |c_#memory_int| |c_ULTIMATE.start_main_~#main__max~0.base|))) (let ((.cse4 (let ((.cse12 (select .cse10 |c_ULTIMATE.start_main_~#main__max~0.offset|))) (fp ((_ extract 31 31) .cse12) ((_ extract 30 23) .cse12) ((_ extract 22 0) .cse12)))) (.cse5 (let ((.cse11 (select (select |c_#memory_int| |c_ULTIMATE.start_main_~#main__min~0.base|) |c_ULTIMATE.start_main_~#main__min~0.offset|))) (fp ((_ extract 31 31) .cse11) ((_ extract 30 23) .cse11) ((_ extract 22 0) .cse11)))) (.cse7 (fp ((_ extract 31 31) |v_ULTIMATE.start_main_#t~nondet22_6|) ((_ extract 30 23) |v_ULTIMATE.start_main_#t~nondet22_6|) ((_ extract 22 0) |v_ULTIMATE.start_main_#t~nondet22_6|))) (.cse3 (fp ((_ extract 31 31) |v_ULTIMATE.start_main_#t~nondet25_6|) ((_ extract 30 23) |v_ULTIMATE.start_main_#t~nondet25_6|) ((_ extract 22 0) |v_ULTIMATE.start_main_#t~nondet25_6|))) (.cse8 (fp ((_ extract 31 31) v_ULTIMATE.start_main_~main__z~0_10) ((_ extract 30 23) v_ULTIMATE.start_main_~main__z~0_10) ((_ extract 22 0) v_ULTIMATE.start_main_~main__z~0_10))) (.cse6 (fp ((_ extract 31 31) ULTIMATE.start_main_~main__t~0) ((_ extract 30 23) ULTIMATE.start_main_~main__t~0) ((_ extract 22 0) ULTIMATE.start_main_~main__t~0)))) (or (not (= .cse3 (fp.sub c_~CRM .cse4 .cse5))) (not (fp.geq .cse6 (fp ((_ extract 31 31) |c_ULTIMATE.start_main_#t~mem18|) ((_ extract 30 23) |c_ULTIMATE.start_main_#t~mem18|) ((_ extract 22 0) |c_ULTIMATE.start_main_#t~mem18|)))) (not (fp.leq .cse6 .cse4)) (not (= (fp.sub c_~CRM .cse6 .cse5) .cse7)) (not (= (fp.div c_~CRM .cse7 .cse3) .cse8)) (fp.geq ((_ to_fp 11 53) c_~CRM .cse8) (_ +zero 11 53)) (not (fp.leq .cse6 (let ((.cse9 (select .cse10 (bvadd |c_ULTIMATE.start_main_~#main__max~0.offset| (_ bv16 32))))) (fp ((_ extract 31 31) .cse9) ((_ extract 30 23) .cse9) ((_ extract 22 0) .cse9))))))))) (= ((_ to_fp 8 24) c_~CRM (_ bv300 32)) (let ((.cse13 (select .cse1 (bvadd |c_ULTIMATE.start_main_~#main__max~0.offset| (_ bv16 32))))) (fp ((_ extract 31 31) .cse13) ((_ extract 30 23) .cse13) ((_ extract 22 0) .cse13)))) (= |c_ULTIMATE.start_main_~#main__max~0.offset| (_ bv0 32)))) is different from false [2020-11-23 23:30:39,167 WARN L193 SmtUtils]: Spent 23.07 s on a formula simplification. DAG size of input: 86 DAG size of output: 80 [2020-11-23 23:30:59,772 WARN L193 SmtUtils]: Spent 10.27 s on a formula simplification that was a NOOP. DAG size: 58 [2020-11-23 23:31:24,327 WARN L193 SmtUtils]: Spent 11.24 s on a formula simplification that was a NOOP. DAG size: 79 [2020-11-23 23:32:01,380 WARN L193 SmtUtils]: Spent 23.76 s on a formula simplification. DAG size of input: 106 DAG size of output: 81 [2020-11-23 23:32:38,215 WARN L193 SmtUtils]: Spent 23.12 s on a formula simplification that was a NOOP. DAG size: 84 [2020-11-23 23:33:03,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-23 23:33:03,766 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-11-23 23:33:03,768 FATAL L? ?]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000)Received EOF on stdin. No stderr output. at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:209) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parseCheckSatResult(Executor.java:226) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.checkSat(Scriptor.java:153) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.checkSat(WrapperScript.java:163) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.checkSat(WrapperScript.java:163) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.checkSat(WrapperScript.java:163) at de.uni_freiburg.informatik.ultimate.logic.Util.checkSat(Util.java:61) at de.uni_freiburg.informatik.ultimate.logic.simplification.SimplifyDDA.getRedundancy(SimplifyDDA.java:626) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.simplify.SimplifyDDAWithTimeout.getRedundancy(SimplifyDDAWithTimeout.java:120) at de.uni_freiburg.informatik.ultimate.logic.simplification.SimplifyDDA$Simplifier.walk(SimplifyDDA.java:371) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:115) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:106) at de.uni_freiburg.informatik.ultimate.logic.simplification.SimplifyDDA.simplifyOnce(SimplifyDDA.java:650) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.simplify.SimplifyDDAWithTimeout.getSimplifiedTerm(SimplifyDDAWithTimeout.java:180) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SmtUtils.simplify(SmtUtils.java:164) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SmtUtils.simplify(SmtUtils.java:134) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate(PredicateUnifier.java:360) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicateForConjunction(PredicateUnifier.java:388) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicateForConjunction(PredicateUnifier.java:229) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.DeterministicInterpolantAutomaton.getOrConstructPredicate(DeterministicInterpolantAutomaton.java:281) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.DeterministicInterpolantAutomaton.constructSuccessorsAndTransitions(DeterministicInterpolantAutomaton.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.BasicAbstractInterpolantAutomaton.computeSuccs(BasicAbstractInterpolantAutomaton.java:78) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.BasicAbstractInterpolantAutomaton.computeSuccs(BasicAbstractInterpolantAutomaton.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.internalSuccessors(AbstractInterpolantAutomaton.java:233) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.internalSuccessors(AbstractInterpolantAutomaton.java:1) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.TotalizeNwa.internalSuccessors(TotalizeNwa.java:213) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ComplementDeterministicNwa.internalSuccessors(ComplementDeterministicNwa.java:121) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ProductNwa.internalSuccessors(ProductNwa.java:216) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ProductNwa.internalSuccessors(ProductNwa.java:208) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates$ReachableStatesComputation.addInternalsAndSuccessors(NestedWordAutomatonReachableStates.java:1064) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates$ReachableStatesComputation.(NestedWordAutomatonReachableStates.java:966) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates.(NestedWordAutomatonReachableStates.java:187) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.Difference.computeDifference(Difference.java:137) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.Difference.(Difference.java:90) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.computeAutomataDifference(BasicCegarLoop.java:743) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.refineAbstraction(BasicCegarLoop.java:674) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:473) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:372) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopResult.iterate(CegarLoopResult.java:142) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterateNew(TraceAbstractionStarter.java:341) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:182) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:134) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) Caused by: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: EOF at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser$Action$.CUP$do_action(Parser.java:1461) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser.do_action(Parser.java:654) at com.github.jhoenicke.javacup.runtime.LRParser.parse(LRParser.java:419) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:206) ... 52 more [2020-11-23 23:33:03,775 INFO L168 Benchmark]: Toolchain (without parser) took 479636.06 ms. Allocated memory was 48.2 MB in the beginning and 58.7 MB in the end (delta: 10.5 MB). Free memory was 25.4 MB in the beginning and 20.4 MB in the end (delta: 5.0 MB). Peak memory consumption was 19.1 MB. Max. memory is 16.1 GB. [2020-11-23 23:33:03,777 INFO L168 Benchmark]: CDTParser took 0.38 ms. Allocated memory is still 35.7 MB. Free memory was 18.0 MB in the beginning and 17.9 MB in the end (delta: 31.7 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-23 23:33:03,777 INFO L168 Benchmark]: CACSL2BoogieTranslator took 391.50 ms. Allocated memory is still 48.2 MB. Free memory was 24.7 MB in the beginning and 24.4 MB in the end (delta: 304.3 kB). Peak memory consumption was 5.5 MB. Max. memory is 16.1 GB. [2020-11-23 23:33:03,778 INFO L168 Benchmark]: Boogie Procedure Inliner took 54.09 ms. Allocated memory is still 48.2 MB. Free memory was 24.3 MB in the beginning and 22.5 MB in the end (delta: 1.8 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-23 23:33:03,779 INFO L168 Benchmark]: Boogie Preprocessor took 47.00 ms. Allocated memory is still 48.2 MB. Free memory was 22.5 MB in the beginning and 32.5 MB in the end (delta: -10.0 MB). Peak memory consumption was 5.2 MB. Max. memory is 16.1 GB. [2020-11-23 23:33:03,780 INFO L168 Benchmark]: RCFGBuilder took 2222.65 ms. Allocated memory was 48.2 MB in the beginning and 58.7 MB in the end (delta: 10.5 MB). Free memory was 32.3 MB in the beginning and 37.3 MB in the end (delta: -5.0 MB). Peak memory consumption was 13.4 MB. Max. memory is 16.1 GB. [2020-11-23 23:33:03,781 INFO L168 Benchmark]: TraceAbstraction took 476901.95 ms. Allocated memory is still 58.7 MB. Free memory was 36.9 MB in the beginning and 20.4 MB in the end (delta: 16.4 MB). Peak memory consumption was 17.9 MB. Max. memory is 16.1 GB. [2020-11-23 23:33:03,786 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.38 ms. Allocated memory is still 35.7 MB. Free memory was 18.0 MB in the beginning and 17.9 MB in the end (delta: 31.7 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 391.50 ms. Allocated memory is still 48.2 MB. Free memory was 24.7 MB in the beginning and 24.4 MB in the end (delta: 304.3 kB). Peak memory consumption was 5.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 54.09 ms. Allocated memory is still 48.2 MB. Free memory was 24.3 MB in the beginning and 22.5 MB in the end (delta: 1.8 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 47.00 ms. Allocated memory is still 48.2 MB. Free memory was 22.5 MB in the beginning and 32.5 MB in the end (delta: -10.0 MB). Peak memory consumption was 5.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 2222.65 ms. Allocated memory was 48.2 MB in the beginning and 58.7 MB in the end (delta: 10.5 MB). Free memory was 32.3 MB in the beginning and 37.3 MB in the end (delta: -5.0 MB). Peak memory consumption was 13.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 476901.95 ms. Allocated memory is still 58.7 MB. Free memory was 36.9 MB in the beginning and 20.4 MB in the end (delta: 16.4 MB). Peak memory consumption was 17.9 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000)Received EOF on stdin. No stderr output. de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000)Received EOF on stdin. No stderr output.: de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:209) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...