./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/double_req_bl_1092d.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version cad46833 Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_7f092d02-be02-4e79-9503-7b520f55e965/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_7f092d02-be02-4e79-9503-7b520f55e965/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_7f092d02-be02-4e79-9503-7b520f55e965/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_7f092d02-be02-4e79-9503-7b520f55e965/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_1092d.c -s /tmp/vcloud-vcloud-master/worker/working_dir_7f092d02-be02-4e79-9503-7b520f55e965/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_7f092d02-be02-4e79-9503-7b520f55e965/bin/utaipan --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash bbea5fc7c8725f5cbc8325b1d09f091d3964966d ............................................................................................................................................................................................................................................................................................................... Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_7f092d02-be02-4e79-9503-7b520f55e965/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_7f092d02-be02-4e79-9503-7b520f55e965/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_7f092d02-be02-4e79-9503-7b520f55e965/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_7f092d02-be02-4e79-9503-7b520f55e965/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_1092d.c -s /tmp/vcloud-vcloud-master/worker/working_dir_7f092d02-be02-4e79-9503-7b520f55e965/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_7f092d02-be02-4e79-9503-7b520f55e965/bin/utaipan --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash bbea5fc7c8725f5cbc8325b1d09f091d3964966d ............................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: NullPointerException: null --- Real Ultimate output --- This is Ultimate 0.1.24-cad4683 [2019-10-22 11:25:13,433 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-22 11:25:13,435 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-22 11:25:13,444 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-22 11:25:13,444 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-22 11:25:13,445 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-22 11:25:13,446 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-22 11:25:13,448 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-22 11:25:13,450 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-22 11:25:13,450 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-22 11:25:13,451 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-22 11:25:13,452 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-22 11:25:13,452 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-22 11:25:13,453 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-22 11:25:13,454 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-22 11:25:13,455 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-22 11:25:13,455 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-22 11:25:13,456 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-22 11:25:13,457 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-22 11:25:13,459 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-22 11:25:13,460 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-22 11:25:13,461 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-22 11:25:13,462 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-22 11:25:13,462 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-22 11:25:13,464 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-22 11:25:13,465 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-22 11:25:13,465 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-22 11:25:13,466 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-22 11:25:13,466 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-22 11:25:13,467 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-22 11:25:13,467 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-22 11:25:13,468 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-22 11:25:13,468 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-22 11:25:13,469 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-22 11:25:13,470 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-22 11:25:13,470 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-22 11:25:13,471 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-22 11:25:13,471 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-22 11:25:13,471 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-22 11:25:13,472 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-22 11:25:13,472 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-22 11:25:13,473 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_7f092d02-be02-4e79-9503-7b520f55e965/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2019-10-22 11:25:13,488 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-22 11:25:13,488 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-22 11:25:13,488 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-10-22 11:25:13,489 INFO L138 SettingsManager]: * User list type=DISABLED [2019-10-22 11:25:13,489 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-10-22 11:25:13,489 INFO L138 SettingsManager]: * Explicit value domain=true [2019-10-22 11:25:13,489 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-10-22 11:25:13,489 INFO L138 SettingsManager]: * Octagon Domain=false [2019-10-22 11:25:13,489 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-10-22 11:25:13,490 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-10-22 11:25:13,490 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-10-22 11:25:13,490 INFO L138 SettingsManager]: * Interval Domain=false [2019-10-22 11:25:13,490 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-22 11:25:13,491 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-22 11:25:13,491 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-22 11:25:13,491 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-22 11:25:13,491 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-22 11:25:13,491 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-22 11:25:13,491 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-22 11:25:13,492 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-22 11:25:13,492 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-22 11:25:13,492 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-22 11:25:13,492 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-22 11:25:13,492 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-22 11:25:13,492 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-22 11:25:13,492 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-22 11:25:13,493 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-22 11:25:13,493 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-22 11:25:13,493 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-22 11:25:13,493 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-22 11:25:13,493 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-22 11:25:13,493 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-10-22 11:25:13,493 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-22 11:25:13,494 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-22 11:25:13,494 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-22 11:25:13,494 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/working_dir_7f092d02-be02-4e79-9503-7b520f55e965/bin/utaipan 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(__VERIFIER_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan 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 -> bbea5fc7c8725f5cbc8325b1d09f091d3964966d [2019-10-22 11:25:13,522 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-22 11:25:13,534 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-22 11:25:13,537 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-22 11:25:13,538 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-22 11:25:13,538 INFO L275 PluginConnector]: CDTParser initialized [2019-10-22 11:25:13,539 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_7f092d02-be02-4e79-9503-7b520f55e965/bin/utaipan/../../sv-benchmarks/c/float-newlib/double_req_bl_1092d.c [2019-10-22 11:25:13,584 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_7f092d02-be02-4e79-9503-7b520f55e965/bin/utaipan/data/49949c158/1b41c3b74010477a94e10ebcfa4ab15a/FLAG9b213d01e [2019-10-22 11:25:13,993 INFO L306 CDTParser]: Found 1 translation units. [2019-10-22 11:25:13,998 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_7f092d02-be02-4e79-9503-7b520f55e965/sv-benchmarks/c/float-newlib/double_req_bl_1092d.c [2019-10-22 11:25:14,007 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_7f092d02-be02-4e79-9503-7b520f55e965/bin/utaipan/data/49949c158/1b41c3b74010477a94e10ebcfa4ab15a/FLAG9b213d01e [2019-10-22 11:25:14,363 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_7f092d02-be02-4e79-9503-7b520f55e965/bin/utaipan/data/49949c158/1b41c3b74010477a94e10ebcfa4ab15a [2019-10-22 11:25:14,365 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-22 11:25:14,366 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-10-22 11:25:14,367 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-22 11:25:14,367 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-22 11:25:14,370 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-22 11:25:14,371 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 11:25:14" (1/1) ... [2019-10-22 11:25:14,373 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4a956d6f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:25:14, skipping insertion in model container [2019-10-22 11:25:14,374 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 11:25:14" (1/1) ... [2019-10-22 11:25:14,383 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-22 11:25:14,404 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-22 11:25:14,611 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 11:25:14,615 INFO L188 MainTranslator]: Completed pre-run [2019-10-22 11:25:14,649 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 11:25:14,663 INFO L192 MainTranslator]: Completed translation [2019-10-22 11:25:14,664 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:25:14 WrapperNode [2019-10-22 11:25:14,664 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-22 11:25:14,664 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-10-22 11:25:14,664 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-10-22 11:25:14,664 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-10-22 11:25:14,671 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:25:14" (1/1) ... [2019-10-22 11:25:14,680 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:25:14" (1/1) ... [2019-10-22 11:25:14,705 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-10-22 11:25:14,705 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-22 11:25:14,705 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-22 11:25:14,705 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-22 11:25:14,721 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:25:14" (1/1) ... [2019-10-22 11:25:14,721 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:25:14" (1/1) ... [2019-10-22 11:25:14,734 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:25:14" (1/1) ... [2019-10-22 11:25:14,734 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:25:14" (1/1) ... [2019-10-22 11:25:14,743 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:25:14" (1/1) ... [2019-10-22 11:25:14,754 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:25:14" (1/1) ... [2019-10-22 11:25:14,756 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:25:14" (1/1) ... [2019-10-22 11:25:14,759 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-22 11:25:14,760 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-22 11:25:14,760 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-22 11:25:14,760 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-22 11:25:14,761 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:25:14" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_7f092d02-be02-4e79-9503-7b520f55e965/bin/utaipan/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 [2019-10-22 11:25:14,821 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2019-10-22 11:25:14,821 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-22 11:25:14,821 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2019-10-22 11:25:14,823 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-22 11:25:14,823 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-22 11:25:14,823 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-22 11:25:14,823 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-22 11:25:14,823 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-22 11:25:15,120 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-22 11:25:15,120 INFO L284 CfgBuilder]: Removed 14 assume(true) statements. [2019-10-22 11:25:15,122 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 11:25:15 BoogieIcfgContainer [2019-10-22 11:25:15,122 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-22 11:25:15,123 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-22 11:25:15,123 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-22 11:25:15,125 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-22 11:25:15,126 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.10 11:25:14" (1/3) ... [2019-10-22 11:25:15,127 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ca2f78e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 11:25:15, skipping insertion in model container [2019-10-22 11:25:15,127 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:25:14" (2/3) ... [2019-10-22 11:25:15,127 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ca2f78e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 11:25:15, skipping insertion in model container [2019-10-22 11:25:15,127 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 11:25:15" (3/3) ... [2019-10-22 11:25:15,129 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1092d.c [2019-10-22 11:25:15,138 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-22 11:25:15,144 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-22 11:25:15,154 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-22 11:25:15,175 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-22 11:25:15,175 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-22 11:25:15,176 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-22 11:25:15,176 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-22 11:25:15,176 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-22 11:25:15,176 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-22 11:25:15,176 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-22 11:25:15,176 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-22 11:25:15,190 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states. [2019-10-22 11:25:15,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-10-22 11:25:15,196 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:25:15,197 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:25:15,198 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:25:15,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:25:15,203 INFO L82 PathProgramCache]: Analyzing trace with hash 658478814, now seen corresponding path program 1 times [2019-10-22 11:25:15,211 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:25:15,212 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1553771001] [2019-10-22 11:25:15,212 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:25:15,212 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:25:15,212 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:25:15,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:25:15,356 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:25:15,356 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1553771001] [2019-10-22 11:25:15,357 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:25:15,358 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-22 11:25:15,358 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [916979531] [2019-10-22 11:25:15,362 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-22 11:25:15,364 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-22 11:25:15,377 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-22 11:25:15,377 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-22 11:25:15,379 INFO L87 Difference]: Start difference. First operand 37 states. Second operand 2 states. [2019-10-22 11:25:15,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:25:15,398 INFO L93 Difference]: Finished difference Result 72 states and 114 transitions. [2019-10-22 11:25:15,398 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-22 11:25:15,401 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 13 [2019-10-22 11:25:15,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:25:15,412 INFO L225 Difference]: With dead ends: 72 [2019-10-22 11:25:15,412 INFO L226 Difference]: Without dead ends: 34 [2019-10-22 11:25:15,417 INFO L600 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 [2019-10-22 11:25:15,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2019-10-22 11:25:15,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2019-10-22 11:25:15,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2019-10-22 11:25:15,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 48 transitions. [2019-10-22 11:25:15,453 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 48 transitions. Word has length 13 [2019-10-22 11:25:15,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:25:15,453 INFO L462 AbstractCegarLoop]: Abstraction has 34 states and 48 transitions. [2019-10-22 11:25:15,454 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-22 11:25:15,454 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 48 transitions. [2019-10-22 11:25:15,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-10-22 11:25:15,454 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:25:15,454 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:25:15,455 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:25:15,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:25:15,455 INFO L82 PathProgramCache]: Analyzing trace with hash -1562173395, now seen corresponding path program 1 times [2019-10-22 11:25:15,455 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:25:15,455 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1065549366] [2019-10-22 11:25:15,456 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:25:15,456 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:25:15,456 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:25:15,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 11:25:15,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 11:25:15,607 INFO L168 tionRefinementEngine]: Strategy TAIPAN found a feasible trace [2019-10-22 11:25:15,607 INFO L445 BasicCegarLoop]: Counterexample might be feasible [2019-10-22 11:25:15,641 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.10 11:25:15 BoogieIcfgContainer [2019-10-22 11:25:15,643 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-22 11:25:15,647 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-10-22 11:25:15,647 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-10-22 11:25:15,647 INFO L275 PluginConnector]: Witness Printer initialized [2019-10-22 11:25:15,647 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 11:25:15" (3/4) ... [2019-10-22 11:25:15,650 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-10-22 11:25:15,650 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-10-22 11:25:15,652 INFO L168 Benchmark]: Toolchain (without parser) took 1285.30 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 137.9 MB). Free memory was 941.0 MB in the beginning and 1.1 GB in the end (delta: -125.0 MB). Peak memory consumption was 12.9 MB. Max. memory is 11.5 GB. [2019-10-22 11:25:15,653 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 958.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 11:25:15,653 INFO L168 Benchmark]: CACSL2BoogieTranslator took 296.92 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 137.9 MB). Free memory was 941.0 MB in the beginning and 1.1 GB in the end (delta: -190.3 MB). Peak memory consumption was 23.2 MB. Max. memory is 11.5 GB. [2019-10-22 11:25:15,654 INFO L168 Benchmark]: Boogie Procedure Inliner took 40.79 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2019-10-22 11:25:15,654 INFO L168 Benchmark]: Boogie Preprocessor took 54.21 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 11:25:15,655 INFO L168 Benchmark]: RCFGBuilder took 362.10 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 27.8 MB). Peak memory consumption was 27.8 MB. Max. memory is 11.5 GB. [2019-10-22 11:25:15,655 INFO L168 Benchmark]: TraceAbstraction took 523.69 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 32.2 MB). Peak memory consumption was 32.2 MB. Max. memory is 11.5 GB. [2019-10-22 11:25:15,656 INFO L168 Benchmark]: Witness Printer took 3.66 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 11:25:15,658 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 958.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 296.92 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 137.9 MB). Free memory was 941.0 MB in the beginning and 1.1 GB in the end (delta: -190.3 MB). Peak memory consumption was 23.2 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 40.79 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 54.21 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 362.10 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 27.8 MB). Peak memory consumption was 27.8 MB. Max. memory is 11.5 GB. * TraceAbstraction took 523.69 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 32.2 MB). Peak memory consumption was 32.2 MB. Max. memory is 11.5 GB. * Witness Printer took 3.66 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 108]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of shiftRight at line 38, overapproximation of bitwiseOr at line 90, overapproximation of someBinaryArithmeticDOUBLEoperation at line 103, overapproximation of bitwiseAnd at line 89. Possible FailurePath: [L14] static const double huge_ceil = 1.0e300; VAL [huge_ceil=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L103] double x = -1.0 / 0.0; [L17] __int32_t i0, i1, j0; [L18] __uint32_t i, j; VAL [huge_ceil=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L20] ieee_double_shape_type ew_u; [L21] ew_u.value = (x) [L22] EXPR ew_u.parts.msw [L22] (i0) = ew_u.parts.msw [L23] EXPR ew_u.parts.lsw [L23] (i1) = ew_u.parts.lsw [L25] j0 = ((i0 >> 20) & 0x7ff) - 0x3ff VAL [huge_ceil=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L26] COND TRUE j0 < 20 VAL [huge_ceil=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L27] COND FALSE !(j0 < 0) [L38] i = (0x000fffff) >> j0 VAL [huge_ceil=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L39] COND TRUE ((i0 & i) | i1) == 0 [L40] return x; VAL [huge_ceil=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L104] double res = ceil_double(x); [L82] __int32_t hx, lx; VAL [huge_ceil=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L84] ieee_double_shape_type ew_u; [L85] ew_u.value = (x) [L86] EXPR ew_u.parts.msw [L86] (hx) = ew_u.parts.msw [L87] EXPR ew_u.parts.lsw [L87] (lx) = ew_u.parts.lsw [L89] hx &= 0x7fffffff [L90] hx |= (__uint32_t)(lx | (-lx)) >> 31 [L91] hx = 0x7ff00000 - hx [L92] return 1 - (int)((__uint32_t)(hx | (-hx)) >> 31); VAL [huge_ceil=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L107] COND TRUE !isinf_double(res) [L108] __VERIFIER_error() VAL [huge_ceil=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 37 locations, 1 error locations. Result: UNSAFE, OverallTime: 0.4s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 51 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=37occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 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, 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 0.1.24-cad4683 [2019-10-22 11:25:17,705 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-22 11:25:17,706 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-22 11:25:17,716 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-22 11:25:17,716 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-22 11:25:17,717 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-22 11:25:17,718 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-22 11:25:17,719 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-22 11:25:17,721 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-22 11:25:17,721 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-22 11:25:17,722 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-22 11:25:17,723 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-22 11:25:17,723 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-22 11:25:17,724 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-22 11:25:17,725 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-22 11:25:17,725 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-22 11:25:17,726 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-22 11:25:17,727 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-22 11:25:17,728 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-22 11:25:17,730 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-22 11:25:17,731 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-22 11:25:17,732 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-22 11:25:17,733 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-22 11:25:17,734 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-22 11:25:17,736 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-22 11:25:17,736 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-22 11:25:17,736 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-22 11:25:17,737 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-22 11:25:17,737 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-22 11:25:17,738 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-22 11:25:17,738 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-22 11:25:17,739 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-22 11:25:17,740 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-22 11:25:17,740 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-22 11:25:17,741 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-22 11:25:17,742 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-22 11:25:17,742 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-22 11:25:17,742 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-22 11:25:17,743 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-22 11:25:17,743 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-22 11:25:17,744 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-22 11:25:17,745 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_7f092d02-be02-4e79-9503-7b520f55e965/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2019-10-22 11:25:17,763 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-22 11:25:17,763 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-22 11:25:17,764 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-10-22 11:25:17,765 INFO L138 SettingsManager]: * User list type=DISABLED [2019-10-22 11:25:17,765 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-10-22 11:25:17,765 INFO L138 SettingsManager]: * Explicit value domain=true [2019-10-22 11:25:17,766 INFO L138 SettingsManager]: * Octagon Domain=false [2019-10-22 11:25:17,766 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-10-22 11:25:17,766 INFO L138 SettingsManager]: * Interval Domain=false [2019-10-22 11:25:17,766 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-22 11:25:17,767 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-22 11:25:17,767 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-22 11:25:17,767 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-22 11:25:17,767 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-22 11:25:17,767 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-22 11:25:17,767 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-22 11:25:17,768 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-10-22 11:25:17,768 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-10-22 11:25:17,768 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-22 11:25:17,768 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-22 11:25:17,768 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-22 11:25:17,768 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-22 11:25:17,769 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-22 11:25:17,769 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-22 11:25:17,769 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-22 11:25:17,769 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-22 11:25:17,769 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-22 11:25:17,770 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-22 11:25:17,770 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-22 11:25:17,770 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-22 11:25:17,770 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2019-10-22 11:25:17,770 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-10-22 11:25:17,770 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-22 11:25:17,771 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-22 11:25:17,771 INFO L138 SettingsManager]: * Logic for external solver=AUFBV Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/working_dir_7f092d02-be02-4e79-9503-7b520f55e965/bin/utaipan 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(__VERIFIER_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan 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 -> bbea5fc7c8725f5cbc8325b1d09f091d3964966d [2019-10-22 11:25:17,818 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-22 11:25:17,831 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-22 11:25:17,835 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-22 11:25:17,837 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-22 11:25:17,837 INFO L275 PluginConnector]: CDTParser initialized [2019-10-22 11:25:17,838 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_7f092d02-be02-4e79-9503-7b520f55e965/bin/utaipan/../../sv-benchmarks/c/float-newlib/double_req_bl_1092d.c [2019-10-22 11:25:17,892 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_7f092d02-be02-4e79-9503-7b520f55e965/bin/utaipan/data/be304f2f5/d99d894b27064e8c842d98aceff73dfb/FLAGa12b52bd4 [2019-10-22 11:25:18,242 INFO L306 CDTParser]: Found 1 translation units. [2019-10-22 11:25:18,242 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_7f092d02-be02-4e79-9503-7b520f55e965/sv-benchmarks/c/float-newlib/double_req_bl_1092d.c [2019-10-22 11:25:18,247 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_7f092d02-be02-4e79-9503-7b520f55e965/bin/utaipan/data/be304f2f5/d99d894b27064e8c842d98aceff73dfb/FLAGa12b52bd4 [2019-10-22 11:25:18,630 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_7f092d02-be02-4e79-9503-7b520f55e965/bin/utaipan/data/be304f2f5/d99d894b27064e8c842d98aceff73dfb [2019-10-22 11:25:18,633 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-22 11:25:18,634 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-10-22 11:25:18,635 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-22 11:25:18,635 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-22 11:25:18,638 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-22 11:25:18,639 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 11:25:18" (1/1) ... [2019-10-22 11:25:18,642 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@bf4f964 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:25:18, skipping insertion in model container [2019-10-22 11:25:18,642 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 11:25:18" (1/1) ... [2019-10-22 11:25:18,649 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-22 11:25:18,669 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-22 11:25:18,869 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 11:25:18,876 INFO L188 MainTranslator]: Completed pre-run [2019-10-22 11:25:18,920 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 11:25:19,010 INFO L192 MainTranslator]: Completed translation [2019-10-22 11:25:19,010 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:25:19 WrapperNode [2019-10-22 11:25:19,010 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-22 11:25:19,011 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-10-22 11:25:19,011 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-10-22 11:25:19,011 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-10-22 11:25:19,019 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:25:19" (1/1) ... [2019-10-22 11:25:19,033 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:25:19" (1/1) ... [2019-10-22 11:25:19,053 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-10-22 11:25:19,053 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-22 11:25:19,053 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-22 11:25:19,053 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-22 11:25:19,061 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:25:19" (1/1) ... [2019-10-22 11:25:19,061 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:25:19" (1/1) ... [2019-10-22 11:25:19,064 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:25:19" (1/1) ... [2019-10-22 11:25:19,065 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:25:19" (1/1) ... [2019-10-22 11:25:19,074 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:25:19" (1/1) ... [2019-10-22 11:25:19,087 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:25:19" (1/1) ... [2019-10-22 11:25:19,089 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:25:19" (1/1) ... [2019-10-22 11:25:19,092 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-22 11:25:19,092 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-22 11:25:19,092 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-22 11:25:19,092 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-22 11:25:19,093 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:25:19" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_7f092d02-be02-4e79-9503-7b520f55e965/bin/utaipan/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 [2019-10-22 11:25:19,134 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8 [2019-10-22 11:25:19,134 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2019-10-22 11:25:19,134 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2019-10-22 11:25:19,134 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-22 11:25:19,134 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-22 11:25:19,134 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-22 11:25:19,134 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2019-10-22 11:25:19,134 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-22 11:25:20,096 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-22 11:25:20,097 INFO L284 CfgBuilder]: Removed 14 assume(true) statements. [2019-10-22 11:25:20,098 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 11:25:20 BoogieIcfgContainer [2019-10-22 11:25:20,098 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-22 11:25:20,099 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-22 11:25:20,099 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-22 11:25:20,101 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-22 11:25:20,101 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.10 11:25:18" (1/3) ... [2019-10-22 11:25:20,102 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ea5f22f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 11:25:20, skipping insertion in model container [2019-10-22 11:25:20,102 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:25:19" (2/3) ... [2019-10-22 11:25:20,103 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ea5f22f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 11:25:20, skipping insertion in model container [2019-10-22 11:25:20,103 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 11:25:20" (3/3) ... [2019-10-22 11:25:20,104 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1092d.c [2019-10-22 11:25:20,113 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-22 11:25:20,118 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-22 11:25:20,127 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-22 11:25:20,147 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-22 11:25:20,148 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-22 11:25:20,148 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-22 11:25:20,148 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-22 11:25:20,148 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-22 11:25:20,148 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-22 11:25:20,148 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-22 11:25:20,148 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-22 11:25:20,161 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states. [2019-10-22 11:25:20,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-10-22 11:25:20,166 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:25:20,167 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:25:20,168 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:25:20,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:25:20,172 INFO L82 PathProgramCache]: Analyzing trace with hash 658478814, now seen corresponding path program 1 times [2019-10-22 11:25:20,180 INFO L157 tionRefinementEngine]: Executing refinement strategy WALRUS [2019-10-22 11:25:20,181 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1472619256] [2019-10-22 11:25:20,181 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_7f092d02-be02-4e79-9503-7b520f55e965/bin/utaipan/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 [2019-10-22 11:25:20,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:25:20,242 INFO L256 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 1 conjunts are in the unsatisfiable core [2019-10-22 11:25:20,246 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 11:25:20,260 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:25:20,260 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-22 11:25:20,264 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:25:20,270 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1472619256] [2019-10-22 11:25:20,272 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:25:20,272 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2019-10-22 11:25:20,272 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [755388783] [2019-10-22 11:25:20,277 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-22 11:25:20,277 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-10-22 11:25:20,287 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-22 11:25:20,288 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-22 11:25:20,290 INFO L87 Difference]: Start difference. First operand 37 states. Second operand 2 states. [2019-10-22 11:25:20,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:25:20,310 INFO L93 Difference]: Finished difference Result 72 states and 114 transitions. [2019-10-22 11:25:20,310 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-22 11:25:20,311 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 13 [2019-10-22 11:25:20,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:25:20,321 INFO L225 Difference]: With dead ends: 72 [2019-10-22 11:25:20,322 INFO L226 Difference]: Without dead ends: 34 [2019-10-22 11:25:20,325 INFO L600 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 [2019-10-22 11:25:20,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2019-10-22 11:25:20,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2019-10-22 11:25:20,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2019-10-22 11:25:20,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 48 transitions. [2019-10-22 11:25:20,359 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 48 transitions. Word has length 13 [2019-10-22 11:25:20,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:25:20,360 INFO L462 AbstractCegarLoop]: Abstraction has 34 states and 48 transitions. [2019-10-22 11:25:20,360 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-22 11:25:20,360 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 48 transitions. [2019-10-22 11:25:20,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-10-22 11:25:20,361 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:25:20,361 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:25:20,567 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2019-10-22 11:25:20,568 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:25:20,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:25:20,568 INFO L82 PathProgramCache]: Analyzing trace with hash -1562173395, now seen corresponding path program 1 times [2019-10-22 11:25:20,569 INFO L157 tionRefinementEngine]: Executing refinement strategy WALRUS [2019-10-22 11:25:20,569 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2020330717] [2019-10-22 11:25:20,569 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_7f092d02-be02-4e79-9503-7b520f55e965/bin/utaipan/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 [2019-10-22 11:25:20,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:25:20,668 INFO L256 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-22 11:25:20,670 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 11:25:20,745 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:25:20,746 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-22 11:25:20,843 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:25:20,843 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2020330717] [2019-10-22 11:25:20,843 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:25:20,844 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2019-10-22 11:25:20,844 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1566540114] [2019-10-22 11:25:20,845 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-22 11:25:20,845 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-10-22 11:25:20,846 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-22 11:25:20,846 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2019-10-22 11:25:20,846 INFO L87 Difference]: Start difference. First operand 34 states and 48 transitions. Second operand 8 states. [2019-10-22 11:25:20,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:25:20,996 INFO L93 Difference]: Finished difference Result 42 states and 55 transitions. [2019-10-22 11:25:20,997 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-22 11:25:20,997 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 15 [2019-10-22 11:25:20,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:25:20,998 INFO L225 Difference]: With dead ends: 42 [2019-10-22 11:25:20,998 INFO L226 Difference]: Without dead ends: 16 [2019-10-22 11:25:20,999 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2019-10-22 11:25:20,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2019-10-22 11:25:21,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2019-10-22 11:25:21,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2019-10-22 11:25:21,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 15 transitions. [2019-10-22 11:25:21,003 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 15 transitions. Word has length 15 [2019-10-22 11:25:21,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:25:21,003 INFO L462 AbstractCegarLoop]: Abstraction has 16 states and 15 transitions. [2019-10-22 11:25:21,004 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-22 11:25:21,004 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 15 transitions. [2019-10-22 11:25:21,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-10-22 11:25:21,004 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:25:21,004 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:25:21,205 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2019-10-22 11:25:21,205 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:25:21,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:25:21,206 INFO L82 PathProgramCache]: Analyzing trace with hash 1582346339, now seen corresponding path program 1 times [2019-10-22 11:25:21,206 INFO L157 tionRefinementEngine]: Executing refinement strategy WALRUS [2019-10-22 11:25:21,207 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1185133340] [2019-10-22 11:25:21,207 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_7f092d02-be02-4e79-9503-7b520f55e965/bin/utaipan/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 [2019-10-22 11:25:21,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:25:21,378 INFO L256 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 18 conjunts are in the unsatisfiable core [2019-10-22 11:25:21,380 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 11:25:21,638 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2019-10-22 11:25:21,638 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.NullPointerException at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.arrays.ArrayOccurrenceAnalysis$ArrOccFinder$MyWalker.walk(ArrayOccurrenceAnalysis.java:277) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive$TermWalker.walk(NonRecursive.java:139) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.arrays.ArrayOccurrenceAnalysis$ArrOccFinder$MyWalker.walk(ArrayOccurrenceAnalysis.java:195) 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.lib.modelcheckerutils.smt.arrays.ArrayOccurrenceAnalysis$ArrOccFinder.(ArrayOccurrenceAnalysis.java:181) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.arrays.ArrayOccurrenceAnalysis.(ArrayOccurrenceAnalysis.java:83) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.arrays.ArrayOccurrenceAnalysis.downgradeDimensionsIfNecessary(ArrayOccurrenceAnalysis.java:171) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.arrays.ArrayIndexBasedCostEstimation.computeCostEstimation(ArrayIndexBasedCostEstimation.java:132) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.arrays.ArrayIndexBasedCostEstimation.(ArrayIndexBasedCostEstimation.java:64) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.computeCostEstimation(ElimStorePlain.java:519) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.doElimAllRec(ElimStorePlain.java:390) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.startRecursiveElimination(ElimStorePlain.java:216) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.PartialQuantifierElimination.elim(PartialQuantifierElimination.java:306) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.PartialQuantifierElimination.tryToEliminate(PartialQuantifierElimination.java:102) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.IterativePredicateTransformer$QuantifierEliminationPostprocessor.postprocess(IterativePredicateTransformer.java:245) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.IterativePredicateTransformer.applyPostprocessors(IterativePredicateTransformer.java:439) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.IterativePredicateTransformer.computeStrongestPostconditionSequence(IterativePredicateTransformer.java:200) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheckSpWp.computeInterpolantsUsingUnsatCore(TraceCheckSpWp.java:292) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheckSpWp.computeInterpolants(TraceCheckSpWp.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:162) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:108) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:57) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.checkFeasibility(TraceAbstractionRefinementEngine.java:244) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.executeStrategy(TraceAbstractionRefinementEngine.java:160) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.RefinementEngineFactory.runRefinementEngine(RefinementEngineFactory.java:124) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:419) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:368) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterate(TraceAbstractionStarter.java:332) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:170) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:122) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:120) 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:316) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) [2019-10-22 11:25:21,642 INFO L168 Benchmark]: Toolchain (without parser) took 3008.11 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 120.1 MB). Free memory was 951.0 MB in the beginning and 998.7 MB in the end (delta: -47.7 MB). Peak memory consumption was 72.4 MB. Max. memory is 11.5 GB. [2019-10-22 11:25:21,643 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 977.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 11:25:21,643 INFO L168 Benchmark]: CACSL2BoogieTranslator took 375.60 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 120.1 MB). Free memory was 951.0 MB in the beginning and 1.1 GB in the end (delta: -164.3 MB). Peak memory consumption was 29.1 MB. Max. memory is 11.5 GB. [2019-10-22 11:25:21,644 INFO L168 Benchmark]: Boogie Procedure Inliner took 41.89 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 11.5 GB. [2019-10-22 11:25:21,644 INFO L168 Benchmark]: Boogie Preprocessor took 38.56 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 11:25:21,645 INFO L168 Benchmark]: RCFGBuilder took 1005.73 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 32.2 MB). Peak memory consumption was 32.2 MB. Max. memory is 11.5 GB. [2019-10-22 11:25:21,645 INFO L168 Benchmark]: TraceAbstraction took 1542.07 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 998.7 MB in the end (delta: 77.8 MB). Peak memory consumption was 77.8 MB. Max. memory is 11.5 GB. [2019-10-22 11:25:21,648 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 977.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 375.60 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 120.1 MB). Free memory was 951.0 MB in the beginning and 1.1 GB in the end (delta: -164.3 MB). Peak memory consumption was 29.1 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 41.89 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 38.56 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 1005.73 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 32.2 MB). Peak memory consumption was 32.2 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1542.07 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 998.7 MB in the end (delta: 77.8 MB). Peak memory consumption was 77.8 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: NullPointerException: null de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: NullPointerException: null: de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.arrays.ArrayOccurrenceAnalysis$ArrOccFinder$MyWalker.walk(ArrayOccurrenceAnalysis.java:277) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...