./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/double_req_bl_1052c.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/run_dir_08a2c72f-93cc-480a-b303-2c900d542845/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_08a2c72f-93cc-480a-b303-2c900d542845/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_08a2c72f-93cc-480a-b303-2c900d542845/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_08a2c72f-93cc-480a-b303-2c900d542845/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_1052c.c -s /tmp/vcloud-vcloud-master/worker/run_dir_08a2c72f-93cc-480a-b303-2c900d542845/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_08a2c72f-93cc-480a-b303-2c900d542845/bin/uautomizer --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 Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 69b156b7cb8e47e9e9902f33725c5b7467b2d17a ............................................................................................................................................................................................................................................................................................. 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/run_dir_08a2c72f-93cc-480a-b303-2c900d542845/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_08a2c72f-93cc-480a-b303-2c900d542845/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_08a2c72f-93cc-480a-b303-2c900d542845/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_08a2c72f-93cc-480a-b303-2c900d542845/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_1052c.c -s /tmp/vcloud-vcloud-master/worker/run_dir_08a2c72f-93cc-480a-b303-2c900d542845/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_08a2c72f-93cc-480a-b303-2c900d542845/bin/uautomizer --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 Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 69b156b7cb8e47e9e9902f33725c5b7467b2d17a ...................................................................................................................................................................................................................................................................................................................................................................................................... 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 [2019-11-15 23:49:20,657 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-15 23:49:20,659 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-15 23:49:20,673 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-15 23:49:20,673 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-15 23:49:20,674 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-15 23:49:20,676 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-15 23:49:20,685 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-15 23:49:20,688 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-15 23:49:20,693 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-15 23:49:20,694 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-15 23:49:20,695 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-15 23:49:20,696 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-15 23:49:20,697 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-15 23:49:20,698 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-15 23:49:20,699 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-15 23:49:20,700 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-15 23:49:20,701 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-15 23:49:20,703 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-15 23:49:20,706 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-15 23:49:20,709 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-15 23:49:20,711 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-15 23:49:20,713 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-15 23:49:20,714 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-15 23:49:20,717 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-15 23:49:20,717 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-15 23:49:20,717 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-15 23:49:20,719 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-15 23:49:20,719 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-15 23:49:20,720 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-15 23:49:20,720 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-15 23:49:20,721 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-15 23:49:20,721 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-15 23:49:20,722 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-15 23:49:20,723 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-15 23:49:20,724 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-15 23:49:20,724 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-15 23:49:20,725 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-15 23:49:20,725 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-15 23:49:20,726 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-15 23:49:20,726 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-15 23:49:20,727 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_08a2c72f-93cc-480a-b303-2c900d542845/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-15 23:49:20,751 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-15 23:49:20,761 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-15 23:49:20,762 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-15 23:49:20,762 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-15 23:49:20,763 INFO L138 SettingsManager]: * Use SBE=true [2019-11-15 23:49:20,763 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-15 23:49:20,763 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-15 23:49:20,763 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-15 23:49:20,764 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-15 23:49:20,764 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-15 23:49:20,764 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-15 23:49:20,764 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-15 23:49:20,764 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-15 23:49:20,765 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-15 23:49:20,766 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-15 23:49:20,766 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-15 23:49:20,766 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-15 23:49:20,766 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-15 23:49:20,767 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-15 23:49:20,767 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-15 23:49:20,767 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-15 23:49:20,767 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-15 23:49:20,768 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-15 23:49:20,768 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-15 23:49:20,768 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-15 23:49:20,768 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-15 23:49:20,769 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-15 23:49:20,769 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-15 23:49:20,770 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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/run_dir_08a2c72f-93cc-480a-b303-2c900d542845/bin/uautomizer 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 -> 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 -> 69b156b7cb8e47e9e9902f33725c5b7467b2d17a [2019-11-15 23:49:20,795 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-15 23:49:20,805 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-15 23:49:20,808 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-15 23:49:20,809 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-15 23:49:20,809 INFO L275 PluginConnector]: CDTParser initialized [2019-11-15 23:49:20,810 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_08a2c72f-93cc-480a-b303-2c900d542845/bin/uautomizer/../../sv-benchmarks/c/float-newlib/double_req_bl_1052c.c [2019-11-15 23:49:20,859 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_08a2c72f-93cc-480a-b303-2c900d542845/bin/uautomizer/data/b3a908f3f/f62377911914434fa8f0a072ed98bf29/FLAGf2c01759b [2019-11-15 23:49:21,281 INFO L306 CDTParser]: Found 1 translation units. [2019-11-15 23:49:21,282 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_08a2c72f-93cc-480a-b303-2c900d542845/sv-benchmarks/c/float-newlib/double_req_bl_1052c.c [2019-11-15 23:49:21,289 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_08a2c72f-93cc-480a-b303-2c900d542845/bin/uautomizer/data/b3a908f3f/f62377911914434fa8f0a072ed98bf29/FLAGf2c01759b [2019-11-15 23:49:21,303 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_08a2c72f-93cc-480a-b303-2c900d542845/bin/uautomizer/data/b3a908f3f/f62377911914434fa8f0a072ed98bf29 [2019-11-15 23:49:21,306 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-15 23:49:21,307 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-15 23:49:21,311 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-15 23:49:21,311 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-15 23:49:21,314 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-15 23:49:21,315 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.11 11:49:21" (1/1) ... [2019-11-15 23:49:21,317 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@db3544e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:49:21, skipping insertion in model container [2019-11-15 23:49:21,317 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.11 11:49:21" (1/1) ... [2019-11-15 23:49:21,323 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-15 23:49:21,343 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-15 23:49:21,600 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-15 23:49:21,603 INFO L188 MainTranslator]: Completed pre-run [2019-11-15 23:49:21,657 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-15 23:49:21,685 INFO L192 MainTranslator]: Completed translation [2019-11-15 23:49:21,685 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:49:21 WrapperNode [2019-11-15 23:49:21,686 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-15 23:49:21,686 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-15 23:49:21,686 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-15 23:49:21,686 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-15 23:49:21,695 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:49:21" (1/1) ... [2019-11-15 23:49:21,712 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:49:21" (1/1) ... [2019-11-15 23:49:21,745 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-15 23:49:21,746 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-15 23:49:21,746 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-15 23:49:21,746 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-15 23:49:21,759 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:49:21" (1/1) ... [2019-11-15 23:49:21,759 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:49:21" (1/1) ... [2019-11-15 23:49:21,761 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:49:21" (1/1) ... [2019-11-15 23:49:21,762 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:49:21" (1/1) ... [2019-11-15 23:49:21,769 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:49:21" (1/1) ... [2019-11-15 23:49:21,774 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:49:21" (1/1) ... [2019-11-15 23:49:21,776 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:49:21" (1/1) ... [2019-11-15 23:49:21,779 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-15 23:49:21,779 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-15 23:49:21,779 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-15 23:49:21,779 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-15 23:49:21,780 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:49:21" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_08a2c72f-93cc-480a-b303-2c900d542845/bin/uautomizer/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 [2019-11-15 23:49:21,845 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2019-11-15 23:49:21,845 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-15 23:49:21,845 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2019-11-15 23:49:21,845 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-15 23:49:21,846 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-15 23:49:21,846 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-15 23:49:21,846 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-15 23:49:21,847 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-15 23:49:22,182 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-15 23:49:22,183 INFO L284 CfgBuilder]: Removed 14 assume(true) statements. [2019-11-15 23:49:22,184 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 11:49:22 BoogieIcfgContainer [2019-11-15 23:49:22,184 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-15 23:49:22,185 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-15 23:49:22,185 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-15 23:49:22,188 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-15 23:49:22,188 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.11 11:49:21" (1/3) ... [2019-11-15 23:49:22,189 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9e78bbf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.11 11:49:22, skipping insertion in model container [2019-11-15 23:49:22,189 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:49:21" (2/3) ... [2019-11-15 23:49:22,189 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9e78bbf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.11 11:49:22, skipping insertion in model container [2019-11-15 23:49:22,190 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 11:49:22" (3/3) ... [2019-11-15 23:49:22,191 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1052c.c [2019-11-15 23:49:22,200 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-15 23:49:22,206 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-15 23:49:22,215 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-15 23:49:22,237 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-15 23:49:22,237 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-15 23:49:22,238 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-15 23:49:22,238 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-15 23:49:22,238 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-15 23:49:22,238 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-15 23:49:22,238 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-15 23:49:22,238 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-15 23:49:22,252 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states. [2019-11-15 23:49:22,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-11-15 23:49:22,256 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 23:49:22,257 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 23:49:22,258 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 23:49:22,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:49:22,262 INFO L82 PathProgramCache]: Analyzing trace with hash -1930029915, now seen corresponding path program 1 times [2019-11-15 23:49:22,267 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 23:49:22,268 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2067060234] [2019-11-15 23:49:22,268 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:49:22,268 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:49:22,268 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 23:49:22,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:49:22,354 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 23:49:22,355 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2067060234] [2019-11-15 23:49:22,355 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-15 23:49:22,355 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-15 23:49:22,356 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [661226251] [2019-11-15 23:49:22,359 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-15 23:49:22,360 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 23:49:22,371 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-15 23:49:22,372 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-15 23:49:22,374 INFO L87 Difference]: Start difference. First operand 38 states. Second operand 2 states. [2019-11-15 23:49:22,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 23:49:22,389 INFO L93 Difference]: Finished difference Result 74 states and 118 transitions. [2019-11-15 23:49:22,389 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-15 23:49:22,390 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 11 [2019-11-15 23:49:22,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 23:49:22,398 INFO L225 Difference]: With dead ends: 74 [2019-11-15 23:49:22,398 INFO L226 Difference]: Without dead ends: 35 [2019-11-15 23:49:22,400 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 [2019-11-15 23:49:22,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2019-11-15 23:49:22,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2019-11-15 23:49:22,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2019-11-15 23:49:22,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 50 transitions. [2019-11-15 23:49:22,427 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 50 transitions. Word has length 11 [2019-11-15 23:49:22,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 23:49:22,428 INFO L462 AbstractCegarLoop]: Abstraction has 35 states and 50 transitions. [2019-11-15 23:49:22,428 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-15 23:49:22,428 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 50 transitions. [2019-11-15 23:49:22,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-11-15 23:49:22,429 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 23:49:22,429 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 23:49:22,429 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 23:49:22,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:49:22,430 INFO L82 PathProgramCache]: Analyzing trace with hash -1310108990, now seen corresponding path program 1 times [2019-11-15 23:49:22,430 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 23:49:22,430 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1106562926] [2019-11-15 23:49:22,430 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:49:22,430 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:49:22,431 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 23:49:22,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 23:49:22,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 23:49:22,520 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-15 23:49:22,520 INFO L445 BasicCegarLoop]: Counterexample might be feasible [2019-11-15 23:49:22,546 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.11 11:49:22 BoogieIcfgContainer [2019-11-15 23:49:22,546 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-15 23:49:22,547 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-15 23:49:22,547 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-15 23:49:22,547 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-15 23:49:22,547 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 11:49:22" (3/4) ... [2019-11-15 23:49:22,550 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-11-15 23:49:22,550 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-15 23:49:22,552 INFO L168 Benchmark]: Toolchain (without parser) took 1244.59 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 195.0 MB). Free memory was 946.1 MB in the beginning and 1.1 GB in the end (delta: -187.9 MB). Peak memory consumption was 7.1 MB. Max. memory is 11.5 GB. [2019-11-15 23:49:22,552 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-15 23:49:22,553 INFO L168 Benchmark]: CACSL2BoogieTranslator took 375.36 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 195.0 MB). Free memory was 946.1 MB in the beginning and 1.2 GB in the end (delta: -243.9 MB). Peak memory consumption was 22.9 MB. Max. memory is 11.5 GB. [2019-11-15 23:49:22,554 INFO L168 Benchmark]: Boogie Procedure Inliner took 59.43 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2019-11-15 23:49:22,554 INFO L168 Benchmark]: Boogie Preprocessor took 33.08 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-15 23:49:22,555 INFO L168 Benchmark]: RCFGBuilder took 405.00 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 29.1 MB). Peak memory consumption was 29.1 MB. Max. memory is 11.5 GB. [2019-11-15 23:49:22,555 INFO L168 Benchmark]: TraceAbstraction took 361.32 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 21.5 MB). Peak memory consumption was 21.5 MB. Max. memory is 11.5 GB. [2019-11-15 23:49:22,556 INFO L168 Benchmark]: Witness Printer took 3.77 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. [2019-11-15 23:49:22,559 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 375.36 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 195.0 MB). Free memory was 946.1 MB in the beginning and 1.2 GB in the end (delta: -243.9 MB). Peak memory consumption was 22.9 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 59.43 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 33.08 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 405.00 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 29.1 MB). Peak memory consumption was 29.1 MB. Max. memory is 11.5 GB. * TraceAbstraction took 361.32 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 21.5 MB). Peak memory consumption was 21.5 MB. Max. memory is 11.5 GB. * Witness Printer took 3.77 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: 103]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of shiftRight at line 37, overapproximation of bitwiseOr at line 38, overapproximation of someUnaryDOUBLEoperation at line 98, overapproximation of bitwiseAnd at line 25, overapproximation of someBinaryDOUBLEComparisonOperation at line 102. Possible FailurePath: [L14] static const double huge_floor = 1.0e300; VAL [huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L98] double x = -0.0; [L17] __int32_t i0, i1, j0; [L18] __uint32_t i, j; VAL [huge_floor=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_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L26] COND TRUE j0 < 20 VAL [huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L27] COND FALSE !(j0 < 0) [L37] i = (0x000fffff) >> j0 VAL [huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L38] COND TRUE ((i0 & i) | i1) == 0 [L39] return x; VAL [huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L99] double res = floor_double(x); [L102] EXPR res == -0.0 && __signbit_double(res) == 1 VAL [huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L102] COND TRUE !(res == -0.0 && __signbit_double(res) == 1) [L103] __VERIFIER_error() VAL [huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 38 locations, 1 error locations. Result: UNSAFE, OverallTime: 0.3s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 53 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=38occurred 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, 23 NumberOfCodeBlocks, 23 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 10 ConstructedInterpolants, 0 QuantifiedInterpolants, 100 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 [2019-11-15 23:49:24,693 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-15 23:49:24,694 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-15 23:49:24,704 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-15 23:49:24,704 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-15 23:49:24,705 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-15 23:49:24,706 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-15 23:49:24,708 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-15 23:49:24,710 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-15 23:49:24,710 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-15 23:49:24,711 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-15 23:49:24,712 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-15 23:49:24,712 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-15 23:49:24,713 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-15 23:49:24,714 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-15 23:49:24,715 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-15 23:49:24,716 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-15 23:49:24,716 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-15 23:49:24,718 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-15 23:49:24,720 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-15 23:49:24,722 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-15 23:49:24,723 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-15 23:49:24,724 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-15 23:49:24,725 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-15 23:49:24,727 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-15 23:49:24,728 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-15 23:49:24,728 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-15 23:49:24,729 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-15 23:49:24,729 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-15 23:49:24,730 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-15 23:49:24,730 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-15 23:49:24,731 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-15 23:49:24,731 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-15 23:49:24,732 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-15 23:49:24,733 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-15 23:49:24,733 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-15 23:49:24,734 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-15 23:49:24,734 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-15 23:49:24,734 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-15 23:49:24,735 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-15 23:49:24,736 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-15 23:49:24,736 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_08a2c72f-93cc-480a-b303-2c900d542845/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2019-11-15 23:49:24,750 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-15 23:49:24,750 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-15 23:49:24,751 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-15 23:49:24,751 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-15 23:49:24,751 INFO L138 SettingsManager]: * Use SBE=true [2019-11-15 23:49:24,752 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-15 23:49:24,752 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-15 23:49:24,752 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-15 23:49:24,752 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-15 23:49:24,752 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-15 23:49:24,753 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-15 23:49:24,753 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-15 23:49:24,753 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-11-15 23:49:24,753 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-11-15 23:49:24,753 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-15 23:49:24,753 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-15 23:49:24,754 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-15 23:49:24,754 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-15 23:49:24,754 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-15 23:49:24,754 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-15 23:49:24,754 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-15 23:49:24,755 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-15 23:49:24,755 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-15 23:49:24,755 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-15 23:49:24,755 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-15 23:49:24,755 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-15 23:49:24,756 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2019-11-15 23:49:24,756 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-11-15 23:49:24,756 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-15 23:49:24,756 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-15 23:49:24,756 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/run_dir_08a2c72f-93cc-480a-b303-2c900d542845/bin/uautomizer 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 -> 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 -> 69b156b7cb8e47e9e9902f33725c5b7467b2d17a [2019-11-15 23:49:24,785 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-15 23:49:24,795 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-15 23:49:24,798 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-15 23:49:24,799 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-15 23:49:24,800 INFO L275 PluginConnector]: CDTParser initialized [2019-11-15 23:49:24,800 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_08a2c72f-93cc-480a-b303-2c900d542845/bin/uautomizer/../../sv-benchmarks/c/float-newlib/double_req_bl_1052c.c [2019-11-15 23:49:24,849 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_08a2c72f-93cc-480a-b303-2c900d542845/bin/uautomizer/data/64f644d3b/2ff949074d1b4f96a15afa20cf09eb6d/FLAGd572730d6 [2019-11-15 23:49:25,303 INFO L306 CDTParser]: Found 1 translation units. [2019-11-15 23:49:25,304 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_08a2c72f-93cc-480a-b303-2c900d542845/sv-benchmarks/c/float-newlib/double_req_bl_1052c.c [2019-11-15 23:49:25,311 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_08a2c72f-93cc-480a-b303-2c900d542845/bin/uautomizer/data/64f644d3b/2ff949074d1b4f96a15afa20cf09eb6d/FLAGd572730d6 [2019-11-15 23:49:25,328 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_08a2c72f-93cc-480a-b303-2c900d542845/bin/uautomizer/data/64f644d3b/2ff949074d1b4f96a15afa20cf09eb6d [2019-11-15 23:49:25,332 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-15 23:49:25,334 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-15 23:49:25,337 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-15 23:49:25,337 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-15 23:49:25,341 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-15 23:49:25,341 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.11 11:49:25" (1/1) ... [2019-11-15 23:49:25,344 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@634b5818 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:49:25, skipping insertion in model container [2019-11-15 23:49:25,344 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.11 11:49:25" (1/1) ... [2019-11-15 23:49:25,350 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-15 23:49:25,371 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-15 23:49:25,545 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-15 23:49:25,550 INFO L188 MainTranslator]: Completed pre-run [2019-11-15 23:49:25,581 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-15 23:49:25,671 INFO L192 MainTranslator]: Completed translation [2019-11-15 23:49:25,671 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:49:25 WrapperNode [2019-11-15 23:49:25,671 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-15 23:49:25,672 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-15 23:49:25,672 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-15 23:49:25,673 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-15 23:49:25,680 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:49:25" (1/1) ... [2019-11-15 23:49:25,692 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:49:25" (1/1) ... [2019-11-15 23:49:25,715 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-15 23:49:25,716 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-15 23:49:25,716 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-15 23:49:25,716 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-15 23:49:25,724 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:49:25" (1/1) ... [2019-11-15 23:49:25,724 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:49:25" (1/1) ... [2019-11-15 23:49:25,728 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:49:25" (1/1) ... [2019-11-15 23:49:25,728 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:49:25" (1/1) ... [2019-11-15 23:49:25,741 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:49:25" (1/1) ... [2019-11-15 23:49:25,746 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:49:25" (1/1) ... [2019-11-15 23:49:25,748 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:49:25" (1/1) ... [2019-11-15 23:49:25,752 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-15 23:49:25,752 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-15 23:49:25,753 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-15 23:49:25,753 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-15 23:49:25,753 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:49:25" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_08a2c72f-93cc-480a-b303-2c900d542845/bin/uautomizer/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 [2019-11-15 23:49:25,804 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8 [2019-11-15 23:49:25,805 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2019-11-15 23:49:25,805 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2019-11-15 23:49:25,805 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-15 23:49:25,805 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-15 23:49:25,805 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-15 23:49:25,805 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2019-11-15 23:49:25,805 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-15 23:49:26,872 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-15 23:49:26,873 INFO L284 CfgBuilder]: Removed 14 assume(true) statements. [2019-11-15 23:49:26,874 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 11:49:26 BoogieIcfgContainer [2019-11-15 23:49:26,874 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-15 23:49:26,875 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-15 23:49:26,875 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-15 23:49:26,877 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-15 23:49:26,878 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.11 11:49:25" (1/3) ... [2019-11-15 23:49:26,878 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@302aa8f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.11 11:49:26, skipping insertion in model container [2019-11-15 23:49:26,878 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:49:25" (2/3) ... [2019-11-15 23:49:26,879 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@302aa8f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.11 11:49:26, skipping insertion in model container [2019-11-15 23:49:26,879 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 11:49:26" (3/3) ... [2019-11-15 23:49:26,880 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1052c.c [2019-11-15 23:49:26,889 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-15 23:49:26,895 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-15 23:49:26,903 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-15 23:49:26,920 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-15 23:49:26,920 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-15 23:49:26,921 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-15 23:49:26,921 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-15 23:49:26,921 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-15 23:49:26,921 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-15 23:49:26,921 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-15 23:49:26,921 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-15 23:49:26,934 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states. [2019-11-15 23:49:26,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-11-15 23:49:26,940 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 23:49:26,941 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 23:49:26,942 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 23:49:26,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:49:26,947 INFO L82 PathProgramCache]: Analyzing trace with hash -1930029915, now seen corresponding path program 1 times [2019-11-15 23:49:26,955 INFO L157 tionRefinementEngine]: Executing refinement strategy WOLF [2019-11-15 23:49:26,955 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [930713103] [2019-11-15 23:49:26,955 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_08a2c72f-93cc-480a-b303-2c900d542845/bin/uautomizer/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 [2019-11-15 23:49:27,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:49:27,030 INFO L256 TraceCheckSpWp]: Trace formula consists of 21 conjuncts, 1 conjunts are in the unsatisfiable core [2019-11-15 23:49:27,034 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 23:49:27,047 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 23:49:27,047 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-15 23:49:27,050 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 23:49:27,051 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [930713103] [2019-11-15 23:49:27,052 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-15 23:49:27,052 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2019-11-15 23:49:27,053 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [117900299] [2019-11-15 23:49:27,056 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-15 23:49:27,057 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-15 23:49:27,068 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-15 23:49:27,069 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-15 23:49:27,071 INFO L87 Difference]: Start difference. First operand 38 states. Second operand 2 states. [2019-11-15 23:49:27,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 23:49:27,089 INFO L93 Difference]: Finished difference Result 74 states and 118 transitions. [2019-11-15 23:49:27,089 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-15 23:49:27,090 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 11 [2019-11-15 23:49:27,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 23:49:27,100 INFO L225 Difference]: With dead ends: 74 [2019-11-15 23:49:27,101 INFO L226 Difference]: Without dead ends: 35 [2019-11-15 23:49:27,103 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-15 23:49:27,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2019-11-15 23:49:27,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2019-11-15 23:49:27,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2019-11-15 23:49:27,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 50 transitions. [2019-11-15 23:49:27,134 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 50 transitions. Word has length 11 [2019-11-15 23:49:27,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 23:49:27,135 INFO L462 AbstractCegarLoop]: Abstraction has 35 states and 50 transitions. [2019-11-15 23:49:27,135 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-15 23:49:27,135 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 50 transitions. [2019-11-15 23:49:27,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-11-15 23:49:27,136 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 23:49:27,136 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 23:49:27,349 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2019-11-15 23:49:27,350 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 23:49:27,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:49:27,350 INFO L82 PathProgramCache]: Analyzing trace with hash -1310108990, now seen corresponding path program 1 times [2019-11-15 23:49:27,351 INFO L157 tionRefinementEngine]: Executing refinement strategy WOLF [2019-11-15 23:49:27,352 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [593955776] [2019-11-15 23:49:27,352 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_08a2c72f-93cc-480a-b303-2c900d542845/bin/uautomizer/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 [2019-11-15 23:49:27,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:49:27,432 INFO L256 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 8 conjunts are in the unsatisfiable core [2019-11-15 23:49:27,434 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 23:49:27,507 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 23:49:27,507 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-15 23:49:27,597 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 23:49:27,597 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [593955776] [2019-11-15 23:49:27,597 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-15 23:49:27,597 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2019-11-15 23:49:27,598 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1107150122] [2019-11-15 23:49:27,599 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-15 23:49:27,599 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-15 23:49:27,599 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-15 23:49:27,600 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2019-11-15 23:49:27,600 INFO L87 Difference]: Start difference. First operand 35 states and 50 transitions. Second operand 8 states. [2019-11-15 23:49:28,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 23:49:28,039 INFO L93 Difference]: Finished difference Result 59 states and 74 transitions. [2019-11-15 23:49:28,041 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-15 23:49:28,041 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 12 [2019-11-15 23:49:28,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 23:49:28,042 INFO L225 Difference]: With dead ends: 59 [2019-11-15 23:49:28,043 INFO L226 Difference]: Without dead ends: 34 [2019-11-15 23:49:28,044 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2019-11-15 23:49:28,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2019-11-15 23:49:28,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 22. [2019-11-15 23:49:28,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2019-11-15 23:49:28,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 24 transitions. [2019-11-15 23:49:28,053 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 24 transitions. Word has length 12 [2019-11-15 23:49:28,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 23:49:28,054 INFO L462 AbstractCegarLoop]: Abstraction has 22 states and 24 transitions. [2019-11-15 23:49:28,054 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-15 23:49:28,055 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 24 transitions. [2019-11-15 23:49:28,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-11-15 23:49:28,056 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 23:49:28,060 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 23:49:28,277 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2019-11-15 23:49:28,277 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 23:49:28,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:49:28,277 INFO L82 PathProgramCache]: Analyzing trace with hash -649381144, now seen corresponding path program 1 times [2019-11-15 23:49:28,278 INFO L157 tionRefinementEngine]: Executing refinement strategy WOLF [2019-11-15 23:49:28,278 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1074450843] [2019-11-15 23:49:28,278 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_08a2c72f-93cc-480a-b303-2c900d542845/bin/uautomizer/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 [2019-11-15 23:49:28,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:49:28,425 INFO L256 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 5 conjunts are in the unsatisfiable core [2019-11-15 23:49:28,426 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 23:49:28,473 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 23:49:28,473 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-15 23:49:29,065 WARN L191 SmtUtils]: Spent 272.00 ms on a formula simplification that was a NOOP. DAG size: 6 [2019-11-15 23:49:29,212 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 23:49:29,212 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1074450843] [2019-11-15 23:49:29,212 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-15 23:49:29,212 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2019-11-15 23:49:29,212 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1924800866] [2019-11-15 23:49:29,213 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-15 23:49:29,213 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-15 23:49:29,213 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-15 23:49:29,214 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2019-11-15 23:49:29,214 INFO L87 Difference]: Start difference. First operand 22 states and 24 transitions. Second operand 6 states. [2019-11-15 23:49:29,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 23:49:29,708 INFO L93 Difference]: Finished difference Result 34 states and 36 transitions. [2019-11-15 23:49:29,715 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-15 23:49:29,715 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2019-11-15 23:49:29,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 23:49:29,716 INFO L225 Difference]: With dead ends: 34 [2019-11-15 23:49:29,716 INFO L226 Difference]: Without dead ends: 22 [2019-11-15 23:49:29,716 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2019-11-15 23:49:29,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2019-11-15 23:49:29,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2019-11-15 23:49:29,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2019-11-15 23:49:29,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 23 transitions. [2019-11-15 23:49:29,722 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 23 transitions. Word has length 15 [2019-11-15 23:49:29,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 23:49:29,723 INFO L462 AbstractCegarLoop]: Abstraction has 22 states and 23 transitions. [2019-11-15 23:49:29,723 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-15 23:49:29,723 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 23 transitions. [2019-11-15 23:49:29,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-11-15 23:49:29,723 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 23:49:29,724 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 23:49:29,932 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2019-11-15 23:49:29,933 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 23:49:29,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:49:29,933 INFO L82 PathProgramCache]: Analyzing trace with hash 461150674, now seen corresponding path program 1 times [2019-11-15 23:49:29,933 INFO L157 tionRefinementEngine]: Executing refinement strategy WOLF [2019-11-15 23:49:29,933 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [868899042] [2019-11-15 23:49:29,934 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_08a2c72f-93cc-480a-b303-2c900d542845/bin/uautomizer/mathsat Starting monitored process 5 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with mathsat -unsat_core_generation=3 [2019-11-15 23:49:30,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:49:30,129 INFO L256 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 11 conjunts are in the unsatisfiable core [2019-11-15 23:49:30,132 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 23:49:30,360 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2019-11-15 23:49:30,361 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) [2019-11-15 23:49:30,365 INFO L168 Benchmark]: Toolchain (without parser) took 5031.05 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 120.6 MB). Free memory was 951.0 MB in the beginning and 980.9 MB in the end (delta: -29.9 MB). Peak memory consumption was 90.7 MB. Max. memory is 11.5 GB. [2019-11-15 23:49:30,366 INFO L168 Benchmark]: CDTParser took 0.23 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. [2019-11-15 23:49:30,367 INFO L168 Benchmark]: CACSL2BoogieTranslator took 334.75 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 120.6 MB). Free memory was 951.0 MB in the beginning and 1.1 GB in the end (delta: -157.6 MB). Peak memory consumption was 29.3 MB. Max. memory is 11.5 GB. [2019-11-15 23:49:30,367 INFO L168 Benchmark]: Boogie Procedure Inliner took 43.23 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. [2019-11-15 23:49:30,373 INFO L168 Benchmark]: Boogie Preprocessor took 36.43 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. [2019-11-15 23:49:30,375 INFO L168 Benchmark]: RCFGBuilder took 1121.53 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: 29.4 MB). Peak memory consumption was 29.4 MB. Max. memory is 11.5 GB. [2019-11-15 23:49:30,381 INFO L168 Benchmark]: TraceAbstraction took 3488.95 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 980.9 MB in the end (delta: 98.4 MB). Peak memory consumption was 98.4 MB. Max. memory is 11.5 GB. [2019-11-15 23:49:30,385 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 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 334.75 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 120.6 MB). Free memory was 951.0 MB in the beginning and 1.1 GB in the end (delta: -157.6 MB). Peak memory consumption was 29.3 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 43.23 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. * Boogie Preprocessor took 36.43 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 1121.53 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: 29.4 MB). Peak memory consumption was 29.4 MB. Max. memory is 11.5 GB. * TraceAbstraction took 3488.95 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 980.9 MB in the end (delta: 98.4 MB). Peak memory consumption was 98.4 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...