./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/float-newlib/double_req_bl_1032d.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version ee8e70e7 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/float-newlib/double_req_bl_1032d.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 875e041813cc52e2b4711be1a316a97bbafa7756 ...................................................................................................................................................................................................................................................................................................... Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/float-newlib/double_req_bl_1032d.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 875e041813cc52e2b4711be1a316a97bbafa7756 .................................................................................................................................................................................................................................................................................................................................... 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) Connection to SMT solver broken --- Real Ultimate output --- This is Ultimate 0.2.0-ee8e70e [2020-10-24 15:03:52,616 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-24 15:03:52,619 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-24 15:03:52,667 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-24 15:03:52,668 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-24 15:03:52,669 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-24 15:03:52,671 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-24 15:03:52,674 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-24 15:03:52,676 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-24 15:03:52,677 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-24 15:03:52,678 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-24 15:03:52,680 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-24 15:03:52,681 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-24 15:03:52,682 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-24 15:03:52,683 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-24 15:03:52,685 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-24 15:03:52,686 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-24 15:03:52,687 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-24 15:03:52,689 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-24 15:03:52,691 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-24 15:03:52,693 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-24 15:03:52,695 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-24 15:03:52,696 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-24 15:03:52,697 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-24 15:03:52,700 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-24 15:03:52,701 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-24 15:03:52,701 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-24 15:03:52,702 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-24 15:03:52,703 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-24 15:03:52,704 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-24 15:03:52,705 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-24 15:03:52,706 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-24 15:03:52,711 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-24 15:03:52,712 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-24 15:03:52,716 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-24 15:03:52,716 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-24 15:03:52,725 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-24 15:03:52,725 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-24 15:03:52,725 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-24 15:03:52,729 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-24 15:03:52,730 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-24 15:03:52,732 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-24 15:03:52,783 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-24 15:03:52,783 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-24 15:03:52,787 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-24 15:03:52,788 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-24 15:03:52,788 INFO L138 SettingsManager]: * Use SBE=true [2020-10-24 15:03:52,788 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-24 15:03:52,789 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-24 15:03:52,789 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-24 15:03:52,789 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-24 15:03:52,790 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-24 15:03:52,791 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-24 15:03:52,791 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-24 15:03:52,791 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-24 15:03:52,792 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-24 15:03:52,792 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-24 15:03:52,792 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-24 15:03:52,792 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-24 15:03:52,793 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-24 15:03:52,793 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-24 15:03:52,793 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-24 15:03:52,794 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-24 15:03:52,794 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-24 15:03:52,794 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-24 15:03:52,794 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-24 15:03:52,795 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-24 15:03:52,795 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-24 15:03:52,795 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-24 15:03:52,795 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-24 15:03:52,796 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-24 15:03:52,796 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 875e041813cc52e2b4711be1a316a97bbafa7756 [2020-10-24 15:03:53,293 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-24 15:03:53,322 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-24 15:03:53,325 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-24 15:03:53,327 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-24 15:03:53,328 INFO L275 PluginConnector]: CDTParser initialized [2020-10-24 15:03:53,329 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-newlib/double_req_bl_1032d.c [2020-10-24 15:03:53,421 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fc1bea5e8/0ba4d7d21b93441083e7fec6b61b798e/FLAG0413b02c4 [2020-10-24 15:03:54,054 INFO L306 CDTParser]: Found 1 translation units. [2020-10-24 15:03:54,055 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/releaseScripts/default/sv-benchmarks/c/float-newlib/double_req_bl_1032d.c [2020-10-24 15:03:54,064 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fc1bea5e8/0ba4d7d21b93441083e7fec6b61b798e/FLAG0413b02c4 [2020-10-24 15:03:54,415 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fc1bea5e8/0ba4d7d21b93441083e7fec6b61b798e [2020-10-24 15:03:54,418 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-24 15:03:54,424 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-24 15:03:54,432 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-24 15:03:54,432 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-24 15:03:54,437 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-24 15:03:54,438 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 03:03:54" (1/1) ... [2020-10-24 15:03:54,442 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@57903287 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:03:54, skipping insertion in model container [2020-10-24 15:03:54,442 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 03:03:54" (1/1) ... [2020-10-24 15:03:54,452 INFO L146 MainTranslator]: Starting translation in SV-COMP mode [2020-10-24 15:03:54,487 INFO L179 MainTranslator]: Built tables and reachable declarations [2020-10-24 15:03:54,692 INFO L211 PostProcessor]: Analyzing one entry point: main [2020-10-24 15:03:54,703 INFO L212 MainTranslator]: Completed pre-run [2020-10-24 15:03:54,738 INFO L211 PostProcessor]: Analyzing one entry point: main [2020-10-24 15:03:54,758 INFO L217 MainTranslator]: Completed translation [2020-10-24 15:03:54,759 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:03:54 WrapperNode [2020-10-24 15:03:54,759 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-24 15:03:54,760 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-24 15:03:54,760 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-24 15:03:54,761 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-24 15:03:54,770 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:03:54" (1/1) ... [2020-10-24 15:03:54,781 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:03:54" (1/1) ... [2020-10-24 15:03:54,811 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-24 15:03:54,812 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-24 15:03:54,812 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-24 15:03:54,812 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-24 15:03:54,822 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:03:54" (1/1) ... [2020-10-24 15:03:54,823 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:03:54" (1/1) ... [2020-10-24 15:03:54,827 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:03:54" (1/1) ... [2020-10-24 15:03:54,827 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:03:54" (1/1) ... [2020-10-24 15:03:54,837 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:03:54" (1/1) ... [2020-10-24 15:03:54,843 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:03:54" (1/1) ... [2020-10-24 15:03:54,846 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:03:54" (1/1) ... [2020-10-24 15:03:54,849 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-24 15:03:54,864 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-24 15:03:54,864 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-24 15:03:54,864 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-24 15:03:54,865 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:03:54" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-24 15:03:54,972 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-24 15:03:54,973 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-24 15:03:54,973 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-10-24 15:03:54,973 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-24 15:03:54,973 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-10-24 15:03:54,973 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-24 15:03:54,973 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-24 15:03:54,974 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-24 15:03:54,974 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-24 15:03:55,451 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-24 15:03:55,451 INFO L298 CfgBuilder]: Removed 16 assume(true) statements. [2020-10-24 15:03:55,453 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 03:03:55 BoogieIcfgContainer [2020-10-24 15:03:55,453 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-24 15:03:55,455 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-24 15:03:55,461 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-24 15:03:55,465 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-24 15:03:55,466 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 03:03:54" (1/3) ... [2020-10-24 15:03:55,467 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a96d4fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 03:03:55, skipping insertion in model container [2020-10-24 15:03:55,467 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:03:54" (2/3) ... [2020-10-24 15:03:55,467 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a96d4fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 03:03:55, skipping insertion in model container [2020-10-24 15:03:55,472 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 03:03:55" (3/3) ... [2020-10-24 15:03:55,474 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1032d.c [2020-10-24 15:03:55,484 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-24 15:03:55,487 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-24 15:03:55,499 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-24 15:03:55,522 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-24 15:03:55,522 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-24 15:03:55,523 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-24 15:03:55,523 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-24 15:03:55,523 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-24 15:03:55,523 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-24 15:03:55,523 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-24 15:03:55,523 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-24 15:03:55,536 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states. [2020-10-24 15:03:55,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-24 15:03:55,542 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 15:03:55,542 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 15:03:55,543 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 15:03:55,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 15:03:55,549 INFO L82 PathProgramCache]: Analyzing trace with hash -1058195810, now seen corresponding path program 1 times [2020-10-24 15:03:55,560 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-24 15:03:55,561 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [946319023] [2020-10-24 15:03:55,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 15:03:55,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 15:03:55,732 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 15:03:55,733 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [946319023] [2020-10-24 15:03:55,734 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-24 15:03:55,734 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-24 15:03:55,735 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [108386592] [2020-10-24 15:03:55,741 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-24 15:03:55,741 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-24 15:03:55,757 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-24 15:03:55,758 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-24 15:03:55,761 INFO L87 Difference]: Start difference. First operand 30 states. Second operand 2 states. [2020-10-24 15:03:55,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 15:03:55,784 INFO L93 Difference]: Finished difference Result 57 states and 85 transitions. [2020-10-24 15:03:55,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-24 15:03:55,786 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 13 [2020-10-24 15:03:55,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 15:03:55,798 INFO L225 Difference]: With dead ends: 57 [2020-10-24 15:03:55,799 INFO L226 Difference]: Without dead ends: 26 [2020-10-24 15:03:55,802 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-24 15:03:55,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-10-24 15:03:55,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2020-10-24 15:03:55,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-10-24 15:03:55,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 33 transitions. [2020-10-24 15:03:55,846 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 33 transitions. Word has length 13 [2020-10-24 15:03:55,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 15:03:55,846 INFO L481 AbstractCegarLoop]: Abstraction has 26 states and 33 transitions. [2020-10-24 15:03:55,846 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-24 15:03:55,846 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 33 transitions. [2020-10-24 15:03:55,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-24 15:03:55,847 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 15:03:55,847 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 15:03:55,848 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-24 15:03:55,848 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 15:03:55,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 15:03:55,849 INFO L82 PathProgramCache]: Analyzing trace with hash 1055488069, now seen corresponding path program 1 times [2020-10-24 15:03:55,849 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-24 15:03:55,850 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [343479685] [2020-10-24 15:03:55,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 15:03:55,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-24 15:03:55,964 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-24 15:03:56,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-24 15:03:56,081 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-24 15:03:56,148 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-24 15:03:56,149 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-24 15:03:56,150 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-24 15:03:56,186 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 03:03:56 BoogieIcfgContainer [2020-10-24 15:03:56,186 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-24 15:03:56,187 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-24 15:03:56,188 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-24 15:03:56,188 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-24 15:03:56,189 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 03:03:55" (3/4) ... [2020-10-24 15:03:56,194 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-10-24 15:03:56,194 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-24 15:03:56,198 INFO L168 Benchmark]: Toolchain (without parser) took 1776.19 ms. Allocated memory was 48.2 MB in the beginning and 58.7 MB in the end (delta: 10.5 MB). Free memory was 25.8 MB in the beginning and 39.0 MB in the end (delta: -13.3 MB). Peak memory consumption was 895.6 kB. Max. memory is 16.1 GB. [2020-10-24 15:03:56,199 INFO L168 Benchmark]: CDTParser took 0.32 ms. Allocated memory is still 35.7 MB. Free memory was 18.3 MB in the beginning and 18.3 MB in the end (delta: 31.6 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-24 15:03:56,200 INFO L168 Benchmark]: CACSL2BoogieTranslator took 327.79 ms. Allocated memory is still 48.2 MB. Free memory was 25.2 MB in the beginning and 25.6 MB in the end (delta: -483.0 kB). Peak memory consumption was 3.4 MB. Max. memory is 16.1 GB. [2020-10-24 15:03:56,201 INFO L168 Benchmark]: Boogie Procedure Inliner took 50.49 ms. Allocated memory is still 48.2 MB. Free memory was 25.6 MB in the beginning and 23.8 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-24 15:03:56,202 INFO L168 Benchmark]: Boogie Preprocessor took 38.15 ms. Allocated memory is still 48.2 MB. Free memory was 23.8 MB in the beginning and 22.2 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-24 15:03:56,203 INFO L168 Benchmark]: RCFGBuilder took 589.82 ms. Allocated memory was 48.2 MB in the beginning and 58.7 MB in the end (delta: 10.5 MB). Free memory was 33.4 MB in the beginning and 35.5 MB in the end (delta: -2.2 MB). Peak memory consumption was 13.4 MB. Max. memory is 16.1 GB. [2020-10-24 15:03:56,204 INFO L168 Benchmark]: TraceAbstraction took 731.67 ms. Allocated memory is still 58.7 MB. Free memory was 35.0 MB in the beginning and 39.3 MB in the end (delta: -4.3 MB). Peak memory consumption was 12.3 MB. Max. memory is 16.1 GB. [2020-10-24 15:03:56,205 INFO L168 Benchmark]: Witness Printer took 7.12 ms. Allocated memory is still 58.7 MB. Free memory was 39.3 MB in the beginning and 39.0 MB in the end (delta: 303.7 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-24 15:03:56,210 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32 ms. Allocated memory is still 35.7 MB. Free memory was 18.3 MB in the beginning and 18.3 MB in the end (delta: 31.6 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 327.79 ms. Allocated memory is still 48.2 MB. Free memory was 25.2 MB in the beginning and 25.6 MB in the end (delta: -483.0 kB). Peak memory consumption was 3.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 50.49 ms. Allocated memory is still 48.2 MB. Free memory was 25.6 MB in the beginning and 23.8 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 38.15 ms. Allocated memory is still 48.2 MB. Free memory was 23.8 MB in the beginning and 22.2 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 589.82 ms. Allocated memory was 48.2 MB in the beginning and 58.7 MB in the end (delta: 10.5 MB). Free memory was 33.4 MB in the beginning and 35.5 MB in the end (delta: -2.2 MB). Peak memory consumption was 13.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 731.67 ms. Allocated memory is still 58.7 MB. Free memory was 35.0 MB in the beginning and 39.3 MB in the end (delta: -4.3 MB). Peak memory consumption was 12.3 MB. Max. memory is 16.1 GB. * Witness Printer took 7.12 ms. Allocated memory is still 58.7 MB. Free memory was 39.3 MB in the beginning and 39.0 MB in the end (delta: 303.7 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 3]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of shiftRight at line 33, overapproximation of bitwiseOr at line 75, overapproximation of bitwiseAnd at line 74, overapproximation of someBinaryArithmeticDOUBLE_SMToperation at line 88. Possible FailurePath: [L88] double x = -1.0 / 0.0; [L17] __int32_t msw, exponent_less_1023; [L18] __uint32_t lsw; [L20] ieee_double_shape_type ew_u; [L21] ew_u.value = (x) [L22] EXPR ew_u.parts.msw [L22] (msw) = ew_u.parts.msw [L23] EXPR ew_u.parts.lsw [L23] (lsw) = ew_u.parts.lsw [L25] exponent_less_1023 = ((msw & 0x7ff00000) >> 20) - 1023 [L26] COND TRUE exponent_less_1023 < 20 [L27] COND FALSE !(exponent_less_1023 < 0) [L33] __uint32_t exponent_mask = 0x000fffff >> exponent_less_1023; [L34] COND TRUE (msw & exponent_mask) == 0 && lsw == 0 [L35] return x; [L89] double res = round_double(x); [L67] __int32_t hx, lx; [L69] ieee_double_shape_type ew_u; [L70] ew_u.value = (x) [L71] EXPR ew_u.parts.msw [L71] (hx) = ew_u.parts.msw [L72] EXPR ew_u.parts.lsw [L72] (lx) = ew_u.parts.lsw [L74] hx &= 0x7fffffff [L75] hx |= (__uint32_t)(lx | (-lx)) >> 31 [L76] hx = 0x7ff00000 - hx [L77] return 1 - (int)((__uint32_t)(hx | (-hx)) >> 31); [L92] COND TRUE !isinf_double(res) [L3] __assert_fail("0", "double_req_bl_1032d.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 30 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.6s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 36 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=30occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 28 NumberOfCodeBlocks, 28 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 12 ConstructedInterpolants, 0 QuantifiedInterpolants, 144 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.0-ee8e70e [2020-10-24 15:03:58,909 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-24 15:03:58,916 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-24 15:03:58,971 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-24 15:03:58,972 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-24 15:03:58,978 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-24 15:03:58,983 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-24 15:03:58,987 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-24 15:03:58,991 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-24 15:03:58,997 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-24 15:03:58,999 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-24 15:03:59,004 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-24 15:03:59,004 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-24 15:03:59,008 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-24 15:03:59,009 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-24 15:03:59,012 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-24 15:03:59,013 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-24 15:03:59,017 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-24 15:03:59,029 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-24 15:03:59,037 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-24 15:03:59,042 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-24 15:03:59,044 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-24 15:03:59,045 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-24 15:03:59,046 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-24 15:03:59,049 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-24 15:03:59,049 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-24 15:03:59,050 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-24 15:03:59,051 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-24 15:03:59,052 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-24 15:03:59,053 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-24 15:03:59,053 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-24 15:03:59,054 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-24 15:03:59,055 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-24 15:03:59,056 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-24 15:03:59,057 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-24 15:03:59,058 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-24 15:03:59,058 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-24 15:03:59,059 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-24 15:03:59,059 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-24 15:03:59,060 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-24 15:03:59,061 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-24 15:03:59,062 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2020-10-24 15:03:59,088 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-24 15:03:59,088 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-24 15:03:59,090 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-24 15:03:59,090 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-24 15:03:59,091 INFO L138 SettingsManager]: * Use SBE=true [2020-10-24 15:03:59,091 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-24 15:03:59,091 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-24 15:03:59,092 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-24 15:03:59,092 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-24 15:03:59,092 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-24 15:03:59,092 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-24 15:03:59,093 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-24 15:03:59,093 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-10-24 15:03:59,093 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-10-24 15:03:59,093 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-24 15:03:59,093 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-24 15:03:59,094 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-24 15:03:59,094 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-24 15:03:59,094 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-24 15:03:59,095 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-24 15:03:59,095 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-24 15:03:59,095 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-24 15:03:59,095 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-24 15:03:59,096 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-24 15:03:59,096 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-24 15:03:59,096 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-24 15:03:59,096 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2020-10-24 15:03:59,097 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-10-24 15:03:59,097 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-24 15:03:59,097 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-24 15:03:59,097 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-24 15:03:59,098 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 875e041813cc52e2b4711be1a316a97bbafa7756 [2020-10-24 15:03:59,563 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-24 15:03:59,593 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-24 15:03:59,597 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-24 15:03:59,598 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-24 15:03:59,599 INFO L275 PluginConnector]: CDTParser initialized [2020-10-24 15:03:59,600 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-newlib/double_req_bl_1032d.c [2020-10-24 15:03:59,678 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6ea3ee52d/2415e6a72e6549e7b93a734b135eee3e/FLAG27a6407ec [2020-10-24 15:04:00,364 INFO L306 CDTParser]: Found 1 translation units. [2020-10-24 15:04:00,365 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/releaseScripts/default/sv-benchmarks/c/float-newlib/double_req_bl_1032d.c [2020-10-24 15:04:00,377 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6ea3ee52d/2415e6a72e6549e7b93a734b135eee3e/FLAG27a6407ec [2020-10-24 15:04:00,665 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6ea3ee52d/2415e6a72e6549e7b93a734b135eee3e [2020-10-24 15:04:00,668 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-24 15:04:00,692 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-24 15:04:00,696 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-24 15:04:00,696 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-24 15:04:00,701 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-24 15:04:00,702 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 03:04:00" (1/1) ... [2020-10-24 15:04:00,706 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@10efc372 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:04:00, skipping insertion in model container [2020-10-24 15:04:00,706 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 03:04:00" (1/1) ... [2020-10-24 15:04:00,715 INFO L146 MainTranslator]: Starting translation in SV-COMP mode [2020-10-24 15:04:00,734 INFO L179 MainTranslator]: Built tables and reachable declarations [2020-10-24 15:04:00,939 INFO L211 PostProcessor]: Analyzing one entry point: main [2020-10-24 15:04:00,957 INFO L212 MainTranslator]: Completed pre-run [2020-10-24 15:04:00,996 INFO L211 PostProcessor]: Analyzing one entry point: main [2020-10-24 15:04:01,028 INFO L217 MainTranslator]: Completed translation [2020-10-24 15:04:01,028 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:04:01 WrapperNode [2020-10-24 15:04:01,029 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-24 15:04:01,030 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-24 15:04:01,030 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-24 15:04:01,030 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-24 15:04:01,038 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:04:01" (1/1) ... [2020-10-24 15:04:01,051 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:04:01" (1/1) ... [2020-10-24 15:04:01,092 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-24 15:04:01,093 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-24 15:04:01,093 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-24 15:04:01,093 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-24 15:04:01,104 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:04:01" (1/1) ... [2020-10-24 15:04:01,104 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:04:01" (1/1) ... [2020-10-24 15:04:01,110 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:04:01" (1/1) ... [2020-10-24 15:04:01,110 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:04:01" (1/1) ... [2020-10-24 15:04:01,123 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:04:01" (1/1) ... [2020-10-24 15:04:01,134 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:04:01" (1/1) ... [2020-10-24 15:04:01,141 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:04:01" (1/1) ... [2020-10-24 15:04:01,149 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-24 15:04:01,153 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-24 15:04:01,153 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-24 15:04:01,153 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-24 15:04:01,162 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:04:01" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-24 15:04:01,243 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.float_to_bitvec_DOUBLE [2020-10-24 15:04:01,244 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8 [2020-10-24 15:04:01,244 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2020-10-24 15:04:01,244 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-10-24 15:04:01,244 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-24 15:04:01,245 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2020-10-24 15:04:01,245 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-24 15:04:01,245 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-24 15:04:01,245 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2020-10-24 15:04:01,246 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-24 15:04:02,010 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-24 15:04:02,011 INFO L298 CfgBuilder]: Removed 16 assume(true) statements. [2020-10-24 15:04:02,013 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 03:04:02 BoogieIcfgContainer [2020-10-24 15:04:02,013 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-24 15:04:02,018 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-24 15:04:02,018 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-24 15:04:02,022 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-24 15:04:02,022 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 03:04:00" (1/3) ... [2020-10-24 15:04:02,024 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12a0a284 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 03:04:02, skipping insertion in model container [2020-10-24 15:04:02,025 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:04:01" (2/3) ... [2020-10-24 15:04:02,025 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12a0a284 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 03:04:02, skipping insertion in model container [2020-10-24 15:04:02,025 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 03:04:02" (3/3) ... [2020-10-24 15:04:02,028 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1032d.c [2020-10-24 15:04:02,045 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-24 15:04:02,053 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-24 15:04:02,076 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-24 15:04:02,127 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-24 15:04:02,128 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-24 15:04:02,128 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-24 15:04:02,129 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-24 15:04:02,129 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-24 15:04:02,129 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-24 15:04:02,129 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-24 15:04:02,130 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-24 15:04:02,150 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states. [2020-10-24 15:04:02,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-24 15:04:02,157 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 15:04:02,158 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 15:04:02,159 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 15:04:02,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 15:04:02,166 INFO L82 PathProgramCache]: Analyzing trace with hash -1058195810, now seen corresponding path program 1 times [2020-10-24 15:04:02,182 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-24 15:04:02,183 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1547383333] [2020-10-24 15:04:02,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2020-10-24 15:04:03,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 15:04:03,210 INFO L263 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 1 conjunts are in the unsatisfiable core [2020-10-24 15:04:03,215 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-24 15:04:03,234 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 15:04:03,235 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-24 15:04:03,240 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 15:04:03,241 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1547383333] [2020-10-24 15:04:03,242 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-24 15:04:03,243 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-10-24 15:04:03,244 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1314935806] [2020-10-24 15:04:03,249 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-24 15:04:03,250 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-24 15:04:03,264 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-24 15:04:03,265 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-24 15:04:03,268 INFO L87 Difference]: Start difference. First operand 30 states. Second operand 2 states. [2020-10-24 15:04:03,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 15:04:03,289 INFO L93 Difference]: Finished difference Result 57 states and 85 transitions. [2020-10-24 15:04:03,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-24 15:04:03,291 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 13 [2020-10-24 15:04:03,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 15:04:03,308 INFO L225 Difference]: With dead ends: 57 [2020-10-24 15:04:03,309 INFO L226 Difference]: Without dead ends: 26 [2020-10-24 15:04:03,312 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-24 15:04:03,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-10-24 15:04:03,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2020-10-24 15:04:03,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-10-24 15:04:03,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 33 transitions. [2020-10-24 15:04:03,349 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 33 transitions. Word has length 13 [2020-10-24 15:04:03,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 15:04:03,349 INFO L481 AbstractCegarLoop]: Abstraction has 26 states and 33 transitions. [2020-10-24 15:04:03,350 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-24 15:04:03,350 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 33 transitions. [2020-10-24 15:04:03,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-24 15:04:03,351 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 15:04:03,351 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 15:04:03,552 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-10-24 15:04:03,557 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 15:04:03,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 15:04:03,558 INFO L82 PathProgramCache]: Analyzing trace with hash 1055488069, now seen corresponding path program 1 times [2020-10-24 15:04:03,559 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-24 15:04:03,560 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1980103394] [2020-10-24 15:04:03,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2020-10-24 15:04:04,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 15:04:04,547 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-24 15:04:04,550 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-24 15:04:06,819 WARN L838 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_#t~nondet20_6| (_ BitVec 64)) (|v_ULTIMATE.start_main_#t~nondet18_6| (_ BitVec 64)) (|v_ULTIMATE.start_main_#t~nondet19_6| (_ BitVec 64))) (let ((.cse1 (fp ((_ extract 63 63) |v_ULTIMATE.start_main_#t~nondet19_6|) ((_ extract 62 52) |v_ULTIMATE.start_main_#t~nondet19_6|) ((_ extract 51 0) |v_ULTIMATE.start_main_#t~nondet19_6|))) (.cse2 (fp ((_ extract 63 63) |v_ULTIMATE.start_main_#t~nondet20_6|) ((_ extract 62 52) |v_ULTIMATE.start_main_#t~nondet20_6|) ((_ extract 51 0) |v_ULTIMATE.start_main_#t~nondet20_6|))) (.cse0 (fp ((_ extract 63 63) |v_ULTIMATE.start_main_#t~nondet18_6|) ((_ extract 62 52) |v_ULTIMATE.start_main_#t~nondet18_6|) ((_ extract 51 0) |v_ULTIMATE.start_main_#t~nondet18_6|)))) (and (= (fp.neg .cse0) .cse1) (= .cse2 (_ +zero 11 53)) (= (fp.div roundNearestTiesToEven .cse1 .cse2) (fp ((_ extract 63 63) c_ULTIMATE.start_round_double_~x) ((_ extract 62 52) c_ULTIMATE.start_round_double_~x) ((_ extract 51 0) c_ULTIMATE.start_round_double_~x))) (= .cse0 ((_ to_fp 11 53) roundNearestTiesToEven 1.0))))) is different from false [2020-10-24 15:04:09,062 WARN L838 $PredicateComparison]: unable to prove that (exists ((ULTIMATE.start_round_double_~x (_ BitVec 64)) (|v_ULTIMATE.start_main_#t~nondet20_6| (_ BitVec 64)) (|v_ULTIMATE.start_main_#t~nondet18_6| (_ BitVec 64)) (|v_ULTIMATE.start_main_#t~nondet19_6| (_ BitVec 64))) (let ((.cse1 (fp ((_ extract 63 63) |v_ULTIMATE.start_main_#t~nondet19_6|) ((_ extract 62 52) |v_ULTIMATE.start_main_#t~nondet19_6|) ((_ extract 51 0) |v_ULTIMATE.start_main_#t~nondet19_6|))) (.cse2 (fp ((_ extract 63 63) |v_ULTIMATE.start_main_#t~nondet20_6|) ((_ extract 62 52) |v_ULTIMATE.start_main_#t~nondet20_6|) ((_ extract 51 0) |v_ULTIMATE.start_main_#t~nondet20_6|))) (.cse0 (fp ((_ extract 63 63) |v_ULTIMATE.start_main_#t~nondet18_6|) ((_ extract 62 52) |v_ULTIMATE.start_main_#t~nondet18_6|) ((_ extract 51 0) |v_ULTIMATE.start_main_#t~nondet18_6|)))) (and (= (fp.neg .cse0) .cse1) (= ((_ extract 63 32) ULTIMATE.start_round_double_~x) c_ULTIMATE.start_round_double_~msw~0) (= .cse2 (_ +zero 11 53)) (= (fp.div roundNearestTiesToEven .cse1 .cse2) (fp ((_ extract 63 63) ULTIMATE.start_round_double_~x) ((_ extract 62 52) ULTIMATE.start_round_double_~x) ((_ extract 51 0) ULTIMATE.start_round_double_~x))) (= .cse0 ((_ to_fp 11 53) roundNearestTiesToEven 1.0))))) is different from false [2020-10-24 15:04:11,331 WARN L838 $PredicateComparison]: unable to prove that (exists ((ULTIMATE.start_round_double_~x (_ BitVec 64)) (|v_ULTIMATE.start_main_#t~nondet20_6| (_ BitVec 64)) (|v_ULTIMATE.start_main_#t~nondet18_6| (_ BitVec 64)) (|v_ULTIMATE.start_main_#t~nondet19_6| (_ BitVec 64))) (let ((.cse1 (fp ((_ extract 63 63) |v_ULTIMATE.start_main_#t~nondet19_6|) ((_ extract 62 52) |v_ULTIMATE.start_main_#t~nondet19_6|) ((_ extract 51 0) |v_ULTIMATE.start_main_#t~nondet19_6|))) (.cse2 (fp ((_ extract 63 63) |v_ULTIMATE.start_main_#t~nondet20_6|) ((_ extract 62 52) |v_ULTIMATE.start_main_#t~nondet20_6|) ((_ extract 51 0) |v_ULTIMATE.start_main_#t~nondet20_6|))) (.cse0 (fp ((_ extract 63 63) |v_ULTIMATE.start_main_#t~nondet18_6|) ((_ extract 62 52) |v_ULTIMATE.start_main_#t~nondet18_6|) ((_ extract 51 0) |v_ULTIMATE.start_main_#t~nondet18_6|)))) (and (= (fp.neg .cse0) .cse1) (= (bvadd (bvashr (bvand (_ bv2146435072 32) ((_ extract 63 32) ULTIMATE.start_round_double_~x)) (_ bv20 32)) (_ bv4294966273 32)) c_ULTIMATE.start_round_double_~exponent_less_1023~0) (= .cse2 (_ +zero 11 53)) (= (fp.div roundNearestTiesToEven .cse1 .cse2) (fp ((_ extract 63 63) ULTIMATE.start_round_double_~x) ((_ extract 62 52) ULTIMATE.start_round_double_~x) ((_ extract 51 0) ULTIMATE.start_round_double_~x))) (= .cse0 ((_ to_fp 11 53) roundNearestTiesToEven 1.0))))) is different from false [2020-10-24 15:04:11,374 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 15:04:11,374 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-24 15:04:13,848 WARN L860 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_#t~nondet20_6| (_ BitVec 64)) (|v_ULTIMATE.start_main_#t~nondet18_6| (_ BitVec 64)) (|v_ULTIMATE.start_main_#t~nondet19_6| (_ BitVec 64)) (v_ULTIMATE.start_round_double_~x_10 (_ BitVec 64))) (let ((.cse1 (fp ((_ extract 63 63) |v_ULTIMATE.start_main_#t~nondet20_6|) ((_ extract 62 52) |v_ULTIMATE.start_main_#t~nondet20_6|) ((_ extract 51 0) |v_ULTIMATE.start_main_#t~nondet20_6|))) (.cse2 (fp ((_ extract 63 63) |v_ULTIMATE.start_main_#t~nondet18_6|) ((_ extract 62 52) |v_ULTIMATE.start_main_#t~nondet18_6|) ((_ extract 51 0) |v_ULTIMATE.start_main_#t~nondet18_6|))) (.cse0 (fp ((_ extract 63 63) |v_ULTIMATE.start_main_#t~nondet19_6|) ((_ extract 62 52) |v_ULTIMATE.start_main_#t~nondet19_6|) ((_ extract 51 0) |v_ULTIMATE.start_main_#t~nondet19_6|)))) (or (not (= (fp.div c_~CRM .cse0 .cse1) (fp ((_ extract 63 63) v_ULTIMATE.start_round_double_~x_10) ((_ extract 62 52) v_ULTIMATE.start_round_double_~x_10) ((_ extract 51 0) v_ULTIMATE.start_round_double_~x_10)))) (not (= .cse1 (_ +zero 11 53))) (not (bvslt (bvadd (bvashr (bvand (_ bv2146435072 32) ((_ extract 63 32) v_ULTIMATE.start_round_double_~x_10)) (_ bv20 32)) (_ bv4294966273 32)) (_ bv20 32))) (not (= .cse2 ((_ to_fp 11 53) c_~CRM 1.0))) (not (= (fp.neg .cse2) .cse0))))) is different from true [2020-10-24 15:04:13,850 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 15:04:13,851 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1980103394] [2020-10-24 15:04:13,851 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-24 15:04:13,851 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 9 [2020-10-24 15:04:13,852 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1651537205] [2020-10-24 15:04:13,853 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-24 15:04:13,854 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-24 15:04:13,855 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-24 15:04:13,855 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=4, NotChecked=44, Total=90 [2020-10-24 15:04:13,856 INFO L87 Difference]: Start difference. First operand 26 states and 33 transitions. Second operand 10 states. [2020-10-24 15:04:18,391 WARN L193 SmtUtils]: Spent 2.27 s on a formula simplification that was a NOOP. DAG size: 48 [2020-10-24 15:07:03,505 WARN L195 Executor]: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000) stderr output: (error "out of memory") [2020-10-24 15:07:03,709 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-10-24 15:07:03,711 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) Connection to SMT solver broken at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.input(Executor.java:123) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.pop(Scriptor.java:137) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.arrays.DiffWrapperScript.pop(DiffWrapperScript.java:99) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.pop(WrapperScript.java:153) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.scripttransfer.HistoryRecordingScript.pop(HistoryRecordingScript.java:117) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.pop(ManagedScript.java:128) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.unAssertPrecondition(IncrementalHoareTripleChecker.java:345) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.clearAssertionStack(IncrementalHoareTripleChecker.java:269) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.releaseLock(IncrementalHoareTripleChecker.java:281) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.ProtectiveHoareTripleChecker.releaseLock(ProtectiveHoareTripleChecker.java:93) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.EfficientHoareTripleChecker.releaseLock(EfficientHoareTripleChecker.java:162) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.CachingHoareTripleChecker.releaseLock(CachingHoareTripleChecker.java:201) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.switchToReadonlyMode(AbstractInterpolantAutomaton.java:140) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.computeAutomataDifference(BasicCegarLoop.java:759) 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: java.io.IOException: Stream Closed at java.base/java.io.FileOutputStream.writeBytes(Native Method) at java.base/java.io.FileOutputStream.write(FileOutputStream.java:354) at java.base/java.io.BufferedOutputStream.flushBuffer(BufferedOutputStream.java:81) at java.base/java.io.BufferedOutputStream.flush(BufferedOutputStream.java:142) at java.base/sun.nio.cs.StreamEncoder.implFlush(StreamEncoder.java:318) at java.base/sun.nio.cs.StreamEncoder.flush(StreamEncoder.java:153) at java.base/java.io.OutputStreamWriter.flush(OutputStreamWriter.java:254) at java.base/java.io.BufferedWriter.flush(BufferedWriter.java:257) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.input(Executor.java:120) ... 31 more [2020-10-24 15:07:03,718 INFO L168 Benchmark]: Toolchain (without parser) took 183046.70 ms. Allocated memory was 44.0 MB in the beginning and 67.1 MB in the end (delta: 23.1 MB). Free memory was 20.6 MB in the beginning and 31.7 MB in the end (delta: -11.2 MB). Peak memory consumption was 15.2 MB. Max. memory is 16.1 GB. [2020-10-24 15:07:03,719 INFO L168 Benchmark]: CDTParser took 0.31 ms. Allocated memory is still 44.0 MB. Free memory was 30.1 MB in the beginning and 30.0 MB in the end (delta: 29.6 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-24 15:07:03,720 INFO L168 Benchmark]: CACSL2BoogieTranslator took 333.35 ms. Allocated memory was 44.0 MB in the beginning and 54.5 MB in the end (delta: 10.5 MB). Free memory was 28.8 MB in the beginning and 35.8 MB in the end (delta: -6.9 MB). Peak memory consumption was 8.7 MB. Max. memory is 16.1 GB. [2020-10-24 15:07:03,721 INFO L168 Benchmark]: Boogie Procedure Inliner took 62.08 ms. Allocated memory is still 54.5 MB. Free memory was 35.6 MB in the beginning and 33.8 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-24 15:07:03,722 INFO L168 Benchmark]: Boogie Preprocessor took 59.50 ms. Allocated memory is still 54.5 MB. Free memory was 33.8 MB in the beginning and 32.1 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-24 15:07:03,723 INFO L168 Benchmark]: RCFGBuilder took 860.55 ms. Allocated memory is still 54.5 MB. Free memory was 32.1 MB in the beginning and 23.2 MB in the end (delta: 8.9 MB). Peak memory consumption was 9.6 MB. Max. memory is 16.1 GB. [2020-10-24 15:07:03,724 INFO L168 Benchmark]: TraceAbstraction took 181698.31 ms. Allocated memory was 54.5 MB in the beginning and 67.1 MB in the end (delta: 12.6 MB). Free memory was 22.7 MB in the beginning and 31.7 MB in the end (delta: -9.1 MB). Peak memory consumption was 3.7 MB. Max. memory is 16.1 GB. [2020-10-24 15:07:03,730 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31 ms. Allocated memory is still 44.0 MB. Free memory was 30.1 MB in the beginning and 30.0 MB in the end (delta: 29.6 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 333.35 ms. Allocated memory was 44.0 MB in the beginning and 54.5 MB in the end (delta: 10.5 MB). Free memory was 28.8 MB in the beginning and 35.8 MB in the end (delta: -6.9 MB). Peak memory consumption was 8.7 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 62.08 ms. Allocated memory is still 54.5 MB. Free memory was 35.6 MB in the beginning and 33.8 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 59.50 ms. Allocated memory is still 54.5 MB. Free memory was 33.8 MB in the beginning and 32.1 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 860.55 ms. Allocated memory is still 54.5 MB. Free memory was 32.1 MB in the beginning and 23.2 MB in the end (delta: 8.9 MB). Peak memory consumption was 9.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 181698.31 ms. Allocated memory was 54.5 MB in the beginning and 67.1 MB in the end (delta: 12.6 MB). Free memory was 22.7 MB in the beginning and 31.7 MB in the end (delta: -9.1 MB). Peak memory consumption was 3.7 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) Connection to SMT solver broken de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000) Connection to SMT solver broken: de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.input(Executor.java:123) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...