./Ultimate.py --spec ../../sv-benchmarks/c/ReachSafety.prp --file ../../sv-benchmarks/c/floats-esbmc-regression/Double_div_bad_false-unreach-call.i.p+cfa-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5842f4b8 Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_70a275ff-199a-4f14-b4bc-911e06bd7cf7/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_70a275ff-199a-4f14-b4bc-911e06bd7cf7/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_70a275ff-199a-4f14-b4bc-911e06bd7cf7/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_70a275ff-199a-4f14-b4bc-911e06bd7cf7/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/floats-esbmc-regression/Double_div_bad_false-unreach-call.i.p+cfa-reducer.c -s /tmp/vcloud-vcloud-master/worker/working_dir_70a275ff-199a-4f14-b4bc-911e06bd7cf7/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_70a275ff-199a-4f14-b4bc-911e06bd7cf7/bin-2019/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 14660901cc5c4d61dda44d0e62586d716b569100 ................................................................................................................................................................................................................................................... Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_70a275ff-199a-4f14-b4bc-911e06bd7cf7/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_70a275ff-199a-4f14-b4bc-911e06bd7cf7/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_70a275ff-199a-4f14-b4bc-911e06bd7cf7/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_70a275ff-199a-4f14-b4bc-911e06bd7cf7/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/floats-esbmc-regression/Double_div_bad_false-unreach-call.i.p+cfa-reducer.c -s /tmp/vcloud-vcloud-master/worker/working_dir_70a275ff-199a-4f14-b4bc-911e06bd7cf7/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_70a275ff-199a-4f14-b4bc-911e06bd7cf7/bin-2019/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 14660901cc5c4d61dda44d0e62586d716b569100 ...................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000)Received EOF on stdin. stderr output: (error "out of memory") --- Real Ultimate output --- This is Ultimate 0.1.23-5842f4b [2018-11-18 10:47:29,775 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-18 10:47:29,776 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-18 10:47:29,782 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-18 10:47:29,782 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-18 10:47:29,783 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-18 10:47:29,784 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-18 10:47:29,785 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-18 10:47:29,786 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-18 10:47:29,786 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-18 10:47:29,787 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-18 10:47:29,787 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-18 10:47:29,788 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-18 10:47:29,788 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-18 10:47:29,789 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-18 10:47:29,789 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-18 10:47:29,790 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-18 10:47:29,791 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-18 10:47:29,792 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-18 10:47:29,793 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-18 10:47:29,794 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-18 10:47:29,795 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-18 10:47:29,796 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-18 10:47:29,797 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-18 10:47:29,797 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-18 10:47:29,797 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-18 10:47:29,798 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-18 10:47:29,799 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-18 10:47:29,799 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-18 10:47:29,800 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-18 10:47:29,800 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-18 10:47:29,800 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-18 10:47:29,800 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-18 10:47:29,800 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-18 10:47:29,801 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-18 10:47:29,801 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-18 10:47:29,801 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_70a275ff-199a-4f14-b4bc-911e06bd7cf7/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2018-11-18 10:47:29,809 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-18 10:47:29,810 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-18 10:47:29,810 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-18 10:47:29,810 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-18 10:47:29,810 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-18 10:47:29,811 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-18 10:47:29,811 INFO L133 SettingsManager]: * Explicit value domain=true [2018-11-18 10:47:29,811 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-18 10:47:29,811 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-18 10:47:29,811 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-18 10:47:29,811 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-18 10:47:29,811 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-18 10:47:29,811 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-18 10:47:29,812 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-18 10:47:29,812 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-18 10:47:29,812 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-18 10:47:29,812 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-18 10:47:29,812 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-18 10:47:29,812 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-18 10:47:29,813 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-18 10:47:29,813 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-18 10:47:29,813 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-18 10:47:29,813 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-18 10:47:29,813 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-18 10:47:29,813 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-18 10:47:29,813 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-18 10:47:29,814 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-18 10:47:29,814 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-18 10:47:29,814 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-18 10:47:29,814 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-18 10:47:29,814 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-18 10:47:29,814 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-18 10:47:29,814 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-18 10:47:29,814 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-18 10:47:29,815 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-18 10:47:29,815 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-18 10:47:29,815 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-18 10:47:29,815 INFO L133 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_70a275ff-199a-4f14-b4bc-911e06bd7cf7/bin-2019/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 -> 14660901cc5c4d61dda44d0e62586d716b569100 [2018-11-18 10:47:29,839 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-18 10:47:29,849 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-18 10:47:29,851 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-18 10:47:29,852 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-18 10:47:29,853 INFO L276 PluginConnector]: CDTParser initialized [2018-11-18 10:47:29,853 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_70a275ff-199a-4f14-b4bc-911e06bd7cf7/bin-2019/utaipan/../../sv-benchmarks/c/floats-esbmc-regression/Double_div_bad_false-unreach-call.i.p+cfa-reducer.c [2018-11-18 10:47:29,898 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_70a275ff-199a-4f14-b4bc-911e06bd7cf7/bin-2019/utaipan/data/5679810d2/de4abb22c59449949fc118649a6cc9b3/FLAGeaabb1ba8 [2018-11-18 10:47:30,231 INFO L307 CDTParser]: Found 1 translation units. [2018-11-18 10:47:30,232 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_70a275ff-199a-4f14-b4bc-911e06bd7cf7/sv-benchmarks/c/floats-esbmc-regression/Double_div_bad_false-unreach-call.i.p+cfa-reducer.c [2018-11-18 10:47:30,237 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_70a275ff-199a-4f14-b4bc-911e06bd7cf7/bin-2019/utaipan/data/5679810d2/de4abb22c59449949fc118649a6cc9b3/FLAGeaabb1ba8 [2018-11-18 10:47:30,657 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_70a275ff-199a-4f14-b4bc-911e06bd7cf7/bin-2019/utaipan/data/5679810d2/de4abb22c59449949fc118649a6cc9b3 [2018-11-18 10:47:30,659 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-18 10:47:30,660 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-18 10:47:30,661 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-18 10:47:30,661 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-18 10:47:30,663 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-18 10:47:30,663 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 10:47:30" (1/1) ... [2018-11-18 10:47:30,665 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@644a6f8c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:47:30, skipping insertion in model container [2018-11-18 10:47:30,666 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 10:47:30" (1/1) ... [2018-11-18 10:47:30,672 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-18 10:47:30,685 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-18 10:47:30,789 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 10:47:30,793 INFO L191 MainTranslator]: Completed pre-run [2018-11-18 10:47:30,803 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 10:47:30,811 INFO L195 MainTranslator]: Completed translation [2018-11-18 10:47:30,811 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:47:30 WrapperNode [2018-11-18 10:47:30,811 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-18 10:47:30,811 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-18 10:47:30,811 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-18 10:47:30,812 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-18 10:47:30,816 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:47:30" (1/1) ... [2018-11-18 10:47:30,820 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:47:30" (1/1) ... [2018-11-18 10:47:30,823 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-18 10:47:30,824 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-18 10:47:30,824 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-18 10:47:30,824 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-18 10:47:30,829 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:47:30" (1/1) ... [2018-11-18 10:47:30,829 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:47:30" (1/1) ... [2018-11-18 10:47:30,829 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:47:30" (1/1) ... [2018-11-18 10:47:30,829 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:47:30" (1/1) ... [2018-11-18 10:47:30,832 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:47:30" (1/1) ... [2018-11-18 10:47:30,833 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:47:30" (1/1) ... [2018-11-18 10:47:30,834 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:47:30" (1/1) ... [2018-11-18 10:47:30,834 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-18 10:47:30,835 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-18 10:47:30,835 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-18 10:47:30,835 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-18 10:47:30,835 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:47:30" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_70a275ff-199a-4f14-b4bc-911e06bd7cf7/bin-2019/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 [2018-11-18 10:47:30,901 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-18 10:47:30,901 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-18 10:47:30,901 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-18 10:47:30,901 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-18 10:47:30,901 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-18 10:47:30,902 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-18 10:47:30,982 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-18 10:47:30,983 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 10:47:30 BoogieIcfgContainer [2018-11-18 10:47:30,983 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-18 10:47:30,984 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-18 10:47:30,984 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-18 10:47:30,986 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-18 10:47:30,986 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 10:47:30" (1/3) ... [2018-11-18 10:47:30,986 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9c05e19 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 10:47:30, skipping insertion in model container [2018-11-18 10:47:30,986 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:47:30" (2/3) ... [2018-11-18 10:47:30,987 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9c05e19 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 10:47:30, skipping insertion in model container [2018-11-18 10:47:30,987 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 10:47:30" (3/3) ... [2018-11-18 10:47:30,988 INFO L112 eAbstractionObserver]: Analyzing ICFG Double_div_bad_false-unreach-call.i.p+cfa-reducer.c [2018-11-18 10:47:30,993 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-18 10:47:30,998 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-18 10:47:31,007 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-18 10:47:31,033 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-18 10:47:31,033 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-18 10:47:31,033 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-18 10:47:31,033 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-18 10:47:31,033 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-18 10:47:31,034 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-18 10:47:31,034 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-18 10:47:31,034 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-18 10:47:31,048 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states. [2018-11-18 10:47:31,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2018-11-18 10:47:31,052 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 10:47:31,053 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 10:47:31,055 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 10:47:31,059 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 10:47:31,060 INFO L82 PathProgramCache]: Analyzing trace with hash 1301230683, now seen corresponding path program 1 times [2018-11-18 10:47:31,062 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-18 10:47:31,098 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 10:47:31,098 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 10:47:31,098 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 10:47:31,098 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-18 10:47:31,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 10:47:31,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 10:47:31,136 INFO L442 BasicCegarLoop]: Counterexample might be feasible [2018-11-18 10:47:31,151 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.11 10:47:31 BoogieIcfgContainer [2018-11-18 10:47:31,151 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-18 10:47:31,152 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-18 10:47:31,152 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-18 10:47:31,152 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-18 10:47:31,152 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 10:47:30" (3/4) ... [2018-11-18 10:47:31,155 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-11-18 10:47:31,155 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-18 10:47:31,155 INFO L168 Benchmark]: Toolchain (without parser) took 495.61 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 131.6 MB). Free memory was 959.2 MB in the beginning and 1.1 GB in the end (delta: -146.3 MB). There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 10:47:31,156 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 985.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 10:47:31,157 INFO L168 Benchmark]: CACSL2BoogieTranslator took 150.59 ms. Allocated memory is still 1.0 GB. Free memory was 959.2 MB in the beginning and 948.5 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-11-18 10:47:31,157 INFO L168 Benchmark]: Boogie Procedure Inliner took 12.07 ms. Allocated memory is still 1.0 GB. Free memory was 948.5 MB in the beginning and 945.8 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-11-18 10:47:31,158 INFO L168 Benchmark]: Boogie Preprocessor took 10.79 ms. Allocated memory is still 1.0 GB. Free memory is still 945.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 10:47:31,158 INFO L168 Benchmark]: RCFGBuilder took 148.47 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 131.6 MB). Free memory was 945.8 MB in the beginning and 1.1 GB in the end (delta: -175.8 MB). Peak memory consumption was 18.5 MB. Max. memory is 11.5 GB. [2018-11-18 10:47:31,158 INFO L168 Benchmark]: TraceAbstraction took 167.61 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: 16.1 MB). Peak memory consumption was 16.1 MB. Max. memory is 11.5 GB. [2018-11-18 10:47:31,159 INFO L168 Benchmark]: Witness Printer took 3.21 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. [2018-11-18 10:47:31,161 INFO L336 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 985.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 150.59 ms. Allocated memory is still 1.0 GB. Free memory was 959.2 MB in the beginning and 948.5 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 12.07 ms. Allocated memory is still 1.0 GB. Free memory was 948.5 MB in the beginning and 945.8 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 10.79 ms. Allocated memory is still 1.0 GB. Free memory is still 945.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 148.47 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 131.6 MB). Free memory was 945.8 MB in the beginning and 1.1 GB in the end (delta: -175.8 MB). Peak memory consumption was 18.5 MB. Max. memory is 11.5 GB. * TraceAbstraction took 167.61 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: 16.1 MB). Peak memory consumption was 16.1 MB. Max. memory is 11.5 GB. * Witness Printer took 3.21 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. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 25]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 10, overapproximation of someBinaryArithmeticDOUBLEoperation at line 8. Possible FailurePath: [L1] int __return_main; VAL [\old(__return_main)=2, __return_main=0] [L7] double main__x = 1.0; [L8] double main__x1 = main__x / 1.6; VAL [__return_main=0, main__x=1] [L10] COND FALSE !(main__x1 != main__x) [L19] int __tmp_1; [L20] __tmp_1 = main__x == 0 [L21] int __VERIFIER_assert__cond; [L22] __VERIFIER_assert__cond = __tmp_1 VAL [__return_main=0, __tmp_1=0, __VERIFIER_assert__cond=0, main__x=1] [L23] COND TRUE __VERIFIER_assert__cond == 0 VAL [__return_main=0, __tmp_1=0, __VERIFIER_assert__cond=0, main__x=1] [L25] __VERIFIER_error() VAL [__return_main=0, __tmp_1=0, __VERIFIER_assert__cond=0, main__x=1] - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 14 locations, 1 error locations. UNSAFE Result, 0.1s OverallTime, 1 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=14occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 9 NumberOfCodeBlocks, 9 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: 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 0.1.23-5842f4b [2018-11-18 10:47:32,560 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-18 10:47:32,561 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-18 10:47:32,569 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-18 10:47:32,569 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-18 10:47:32,570 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-18 10:47:32,571 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-18 10:47:32,572 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-18 10:47:32,573 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-18 10:47:32,573 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-18 10:47:32,574 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-18 10:47:32,574 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-18 10:47:32,575 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-18 10:47:32,575 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-18 10:47:32,576 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-18 10:47:32,577 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-18 10:47:32,577 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-18 10:47:32,578 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-18 10:47:32,580 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-18 10:47:32,581 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-18 10:47:32,581 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-18 10:47:32,582 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-18 10:47:32,584 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-18 10:47:32,584 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-18 10:47:32,584 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-18 10:47:32,585 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-18 10:47:32,586 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-18 10:47:32,586 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-18 10:47:32,587 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-18 10:47:32,588 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-18 10:47:32,588 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-18 10:47:32,588 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-18 10:47:32,588 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-18 10:47:32,589 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-18 10:47:32,589 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-18 10:47:32,590 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-18 10:47:32,590 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_70a275ff-199a-4f14-b4bc-911e06bd7cf7/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2018-11-18 10:47:32,601 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-18 10:47:32,601 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-18 10:47:32,601 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-18 10:47:32,602 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-18 10:47:32,602 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-18 10:47:32,602 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-18 10:47:32,602 INFO L133 SettingsManager]: * Explicit value domain=true [2018-11-18 10:47:32,602 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-18 10:47:32,602 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-18 10:47:32,602 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-18 10:47:32,603 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-18 10:47:32,603 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-18 10:47:32,603 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-18 10:47:32,603 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-18 10:47:32,603 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-18 10:47:32,604 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-18 10:47:32,604 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-18 10:47:32,604 INFO L133 SettingsManager]: * Use bitvectors instead of ints=true [2018-11-18 10:47:32,604 INFO L133 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2018-11-18 10:47:32,604 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-18 10:47:32,604 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-18 10:47:32,604 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-18 10:47:32,604 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-18 10:47:32,605 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-18 10:47:32,605 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-18 10:47:32,605 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-18 10:47:32,605 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-18 10:47:32,605 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-18 10:47:32,605 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-18 10:47:32,605 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-18 10:47:32,606 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-18 10:47:32,606 INFO L133 SettingsManager]: * Trace refinement strategy=WALRUS [2018-11-18 10:47:32,606 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-18 10:47:32,606 INFO L133 SettingsManager]: * Command for external solver=cvc4nyu --tear-down-incremental --rewrite-divk --print-success --lang smt [2018-11-18 10:47:32,606 INFO L133 SettingsManager]: * Logic for external solver=AUFBV [2018-11-18 10:47:32,606 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true 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_70a275ff-199a-4f14-b4bc-911e06bd7cf7/bin-2019/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 -> 14660901cc5c4d61dda44d0e62586d716b569100 [2018-11-18 10:47:32,633 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-18 10:47:32,641 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-18 10:47:32,643 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-18 10:47:32,644 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-18 10:47:32,645 INFO L276 PluginConnector]: CDTParser initialized [2018-11-18 10:47:32,645 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_70a275ff-199a-4f14-b4bc-911e06bd7cf7/bin-2019/utaipan/../../sv-benchmarks/c/floats-esbmc-regression/Double_div_bad_false-unreach-call.i.p+cfa-reducer.c [2018-11-18 10:47:32,681 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_70a275ff-199a-4f14-b4bc-911e06bd7cf7/bin-2019/utaipan/data/fd99dee9b/aa115fdc3afa41e99e383eb5377c5b29/FLAGf4f670894 [2018-11-18 10:47:33,073 INFO L307 CDTParser]: Found 1 translation units. [2018-11-18 10:47:33,074 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_70a275ff-199a-4f14-b4bc-911e06bd7cf7/sv-benchmarks/c/floats-esbmc-regression/Double_div_bad_false-unreach-call.i.p+cfa-reducer.c [2018-11-18 10:47:33,078 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_70a275ff-199a-4f14-b4bc-911e06bd7cf7/bin-2019/utaipan/data/fd99dee9b/aa115fdc3afa41e99e383eb5377c5b29/FLAGf4f670894 [2018-11-18 10:47:33,087 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_70a275ff-199a-4f14-b4bc-911e06bd7cf7/bin-2019/utaipan/data/fd99dee9b/aa115fdc3afa41e99e383eb5377c5b29 [2018-11-18 10:47:33,090 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-18 10:47:33,091 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-18 10:47:33,092 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-18 10:47:33,092 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-18 10:47:33,094 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-18 10:47:33,094 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 10:47:33" (1/1) ... [2018-11-18 10:47:33,096 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@510e2a1e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:47:33, skipping insertion in model container [2018-11-18 10:47:33,096 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 10:47:33" (1/1) ... [2018-11-18 10:47:33,102 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-18 10:47:33,115 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-18 10:47:33,240 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 10:47:33,245 INFO L191 MainTranslator]: Completed pre-run [2018-11-18 10:47:33,254 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 10:47:33,263 INFO L195 MainTranslator]: Completed translation [2018-11-18 10:47:33,264 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:47:33 WrapperNode [2018-11-18 10:47:33,264 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-18 10:47:33,264 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-18 10:47:33,264 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-18 10:47:33,265 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-18 10:47:33,269 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:47:33" (1/1) ... [2018-11-18 10:47:33,273 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:47:33" (1/1) ... [2018-11-18 10:47:33,277 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-18 10:47:33,278 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-18 10:47:33,278 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-18 10:47:33,278 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-18 10:47:33,283 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:47:33" (1/1) ... [2018-11-18 10:47:33,283 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:47:33" (1/1) ... [2018-11-18 10:47:33,284 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:47:33" (1/1) ... [2018-11-18 10:47:33,284 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:47:33" (1/1) ... [2018-11-18 10:47:33,288 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:47:33" (1/1) ... [2018-11-18 10:47:33,290 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:47:33" (1/1) ... [2018-11-18 10:47:33,291 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:47:33" (1/1) ... [2018-11-18 10:47:33,292 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-18 10:47:33,292 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-18 10:47:33,292 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-18 10:47:33,292 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-18 10:47:33,293 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:47:33" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_70a275ff-199a-4f14-b4bc-911e06bd7cf7/bin-2019/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 [2018-11-18 10:47:33,372 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-18 10:47:33,373 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-18 10:47:33,373 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-18 10:47:33,373 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-18 10:47:33,373 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-18 10:47:33,373 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-18 10:47:34,161 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-18 10:47:34,161 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 10:47:34 BoogieIcfgContainer [2018-11-18 10:47:34,162 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-18 10:47:34,162 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-18 10:47:34,163 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-18 10:47:34,165 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-18 10:47:34,165 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 10:47:33" (1/3) ... [2018-11-18 10:47:34,165 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5806e61f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 10:47:34, skipping insertion in model container [2018-11-18 10:47:34,166 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:47:33" (2/3) ... [2018-11-18 10:47:34,166 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5806e61f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 10:47:34, skipping insertion in model container [2018-11-18 10:47:34,166 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 10:47:34" (3/3) ... [2018-11-18 10:47:34,167 INFO L112 eAbstractionObserver]: Analyzing ICFG Double_div_bad_false-unreach-call.i.p+cfa-reducer.c [2018-11-18 10:47:34,173 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-18 10:47:34,177 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-18 10:47:34,186 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-18 10:47:34,208 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-18 10:47:34,208 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-18 10:47:34,209 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-18 10:47:34,209 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-18 10:47:34,209 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-18 10:47:34,209 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-18 10:47:34,209 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-18 10:47:34,209 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-18 10:47:34,209 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-18 10:47:34,223 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states. [2018-11-18 10:47:34,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2018-11-18 10:47:34,228 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 10:47:34,229 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 10:47:34,230 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 10:47:34,234 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 10:47:34,234 INFO L82 PathProgramCache]: Analyzing trace with hash 1301230683, now seen corresponding path program 1 times [2018-11-18 10:47:34,236 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-18 10:47:34,236 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_70a275ff-199a-4f14-b4bc-911e06bd7cf7/bin-2019/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 [2018-11-18 10:47:34,240 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 10:47:34,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 10:47:34,479 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 10:47:37,548 WARN L180 SmtUtils]: Spent 3.05 s on a formula simplification that was a NOOP. DAG size: 11 [2018-11-18 10:47:37,556 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 10:47:37,557 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-18 10:47:37,575 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 10:47:37,576 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-18 10:47:37,579 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-18 10:47:37,588 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-18 10:47:37,588 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-18 10:47:37,590 INFO L87 Difference]: Start difference. First operand 14 states. Second operand 3 states. [2018-11-18 10:47:40,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 10:47:40,021 INFO L93 Difference]: Finished difference Result 22 states and 24 transitions. [2018-11-18 10:47:40,249 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-18 10:47:40,250 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2018-11-18 10:47:40,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 10:47:40,256 INFO L225 Difference]: With dead ends: 22 [2018-11-18 10:47:40,256 INFO L226 Difference]: Without dead ends: 11 [2018-11-18 10:47:40,259 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-18 10:47:40,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2018-11-18 10:47:40,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2018-11-18 10:47:40,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2018-11-18 10:47:40,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2018-11-18 10:47:40,281 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 9 [2018-11-18 10:47:40,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 10:47:40,281 INFO L480 AbstractCegarLoop]: Abstraction has 11 states and 11 transitions. [2018-11-18 10:47:40,281 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-18 10:47:40,282 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 11 transitions. [2018-11-18 10:47:40,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-11-18 10:47:40,282 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 10:47:40,282 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 10:47:40,283 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 10:47:40,283 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 10:47:40,283 INFO L82 PathProgramCache]: Analyzing trace with hash 1683383028, now seen corresponding path program 1 times [2018-11-18 10:47:40,283 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-18 10:47:40,284 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_70a275ff-199a-4f14-b4bc-911e06bd7cf7/bin-2019/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 [2018-11-18 10:47:40,296 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 10:47:40,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 10:47:40,739 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 10:47:45,798 WARN L180 SmtUtils]: Spent 2.84 s on a formula simplification that was a NOOP. DAG size: 12 [2018-11-18 10:47:45,801 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 10:47:45,801 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-18 10:47:50,247 WARN L832 $PredicateComparison]: unable to prove that (not (fp.eq (fp.div roundNearestTiesToEven c_main_~main__x1~0 ((_ to_fp 11 53) roundNearestTiesToEven (/ 8.0 5.0))) c_main_~main__x1~0)) is different from false [2018-11-18 10:47:50,802 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2018-11-18 10:47:50,814 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 10:47:50,814 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FPBP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_70a275ff-199a-4f14-b4bc-911e06bd7cf7/bin-2019/utaipan/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 10:47:50,820 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 10:48:02,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2018-11-18 10:48:04,233 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 10:48:04,233 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2018-11-18 10:48:04,233 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-18 10:48:04,234 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-18 10:48:04,234 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=11, Unknown=3, NotChecked=6, Total=30 [2018-11-18 10:48:04,234 INFO L87 Difference]: Start difference. First operand 11 states and 11 transitions. Second operand 6 states. [2018-11-18 10:48:09,961 WARN L180 SmtUtils]: Spent 1.36 s on a formula simplification. DAG size of input: 15 DAG size of output: 12 [2018-11-18 10:48:15,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 10:48:15,077 INFO L93 Difference]: Finished difference Result 16 states and 17 transitions. [2018-11-18 10:48:15,078 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-18 10:48:15,078 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 10 [2018-11-18 10:48:15,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 10:48:15,079 INFO L225 Difference]: With dead ends: 16 [2018-11-18 10:48:15,079 INFO L226 Difference]: Without dead ends: 13 [2018-11-18 10:48:15,080 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 13 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 15.7s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=4, NotChecked=8, Total=42 [2018-11-18 10:48:15,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2018-11-18 10:48:15,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2018-11-18 10:48:15,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2018-11-18 10:48:15,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2018-11-18 10:48:15,084 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 10 [2018-11-18 10:48:15,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 10:48:15,084 INFO L480 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2018-11-18 10:48:15,084 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-18 10:48:15,084 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2018-11-18 10:48:15,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-11-18 10:48:15,085 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 10:48:15,085 INFO L375 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 10:48:15,085 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 10:48:15,086 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 10:48:15,086 INFO L82 PathProgramCache]: Analyzing trace with hash -1473580076, now seen corresponding path program 2 times [2018-11-18 10:48:15,086 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-18 10:48:15,086 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_70a275ff-199a-4f14-b4bc-911e06bd7cf7/bin-2019/utaipan/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 [2018-11-18 10:48:15,093 INFO L101 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2018-11-18 10:48:15,921 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-18 10:48:15,921 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-18 10:48:15,991 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 10:48:18,221 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 11 53) roundNearestTiesToEven (/ 8.0 5.0)))) (and (= (fp.div roundNearestTiesToEven c_main_~main__x~0 .cse0) c_main_~main__x1~0) (= c_main_~main__x~0 (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven 1.0) .cse0) .cse0) .cse0)))) is different from true [2018-11-18 10:48:18,228 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 3 not checked. [2018-11-18 10:48:18,229 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-18 10:48:44,116 WARN L180 SmtUtils]: Spent 11.20 s on a formula simplification that was a NOOP. DAG size: 11 [2018-11-18 10:48:46,528 WARN L832 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) roundNearestTiesToEven (/ 8.0 5.0)))) (let ((.cse0 (fp.div roundNearestTiesToEven c_main_~main__x1~0 .cse1))) (or (fp.eq .cse0 ((_ to_fp 11 53) roundNearestTiesToEven (_ bv0 32))) (not (fp.eq (fp.div roundNearestTiesToEven .cse0 .cse1) .cse0))))) is different from false [2018-11-18 10:48:48,915 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) roundNearestTiesToEven (/ 8.0 5.0)))) (let ((.cse0 (fp.div roundNearestTiesToEven c_main_~main__x1~0 .cse1))) (or (fp.eq .cse0 ((_ to_fp 11 53) roundNearestTiesToEven (_ bv0 32))) (not (fp.eq (fp.div roundNearestTiesToEven .cse0 .cse1) .cse0))))) is different from true [2018-11-18 10:48:51,491 WARN L832 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) roundNearestTiesToEven (/ 8.0 5.0)))) (let ((.cse0 (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven c_main_~main__x1~0 .cse1) .cse1))) (or (fp.eq .cse0 ((_ to_fp 11 53) roundNearestTiesToEven (_ bv0 32))) (not (fp.eq (fp.div roundNearestTiesToEven .cse0 .cse1) .cse0))))) is different from false [2018-11-18 10:48:54,079 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) roundNearestTiesToEven (/ 8.0 5.0)))) (let ((.cse0 (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven c_main_~main__x1~0 .cse1) .cse1))) (or (fp.eq .cse0 ((_ to_fp 11 53) roundNearestTiesToEven (_ bv0 32))) (not (fp.eq (fp.div roundNearestTiesToEven .cse0 .cse1) .cse0))))) is different from true [2018-11-18 10:48:54,092 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 5 not checked. [2018-11-18 10:48:54,110 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 10:48:54,110 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FPBP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_70a275ff-199a-4f14-b4bc-911e06bd7cf7/bin-2019/utaipan/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 10:48:54,117 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-11-18 10:49:08,418 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-18 10:49:08,419 INFO L250 tOrderPrioritization]: Conjunction of SSA is unknown [2018-11-18 10:49:10,722 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 10:49:10,722 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7] total 11 [2018-11-18 10:49:10,723 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-11-18 10:49:10,723 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-11-18 10:49:10,723 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=38, Unknown=8, NotChecked=42, Total=110 [2018-11-18 10:49:10,724 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand 11 states. [2018-11-18 10:49:13,329 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 11 53) roundNearestTiesToEven (/ 8.0 5.0))) (.cse2 ((_ to_fp 11 53) roundNearestTiesToEven (_ bv0 32)))) (and (= (fp.div roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven 1.0) .cse0) c_main_~main__x1~0) (let ((.cse1 (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven c_main_~main__x1~0 .cse0) .cse0))) (or (fp.eq .cse1 .cse2) (not (fp.eq (fp.div roundNearestTiesToEven .cse1 .cse0) .cse1)))) (or (not (fp.eq c_main_~main__x1~0 c_main_~main__x~0)) (fp.eq c_main_~main__x~0 .cse2)))) is different from true [2018-11-18 10:49:15,768 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse2 ((_ to_fp 11 53) roundNearestTiesToEven (/ 8.0 5.0))) (.cse1 ((_ to_fp 11 53) roundNearestTiesToEven (_ bv0 32)))) (and (let ((.cse0 (fp.div roundNearestTiesToEven c_main_~main__x1~0 .cse2))) (or (fp.eq .cse0 .cse1) (not (fp.eq (fp.div roundNearestTiesToEven .cse0 .cse2) .cse0)))) (= (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven 1.0) .cse2) .cse2) c_main_~main__x1~0) (or (not (fp.eq c_main_~main__x1~0 c_main_~main__x~0)) (fp.eq c_main_~main__x~0 .cse1)))) is different from true [2018-11-18 10:49:20,017 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) roundNearestTiesToEven (/ 8.0 5.0))) (.cse0 ((_ to_fp 11 53) roundNearestTiesToEven (_ bv0 32)))) (and (or (fp.eq c_main_~main__x1~0 .cse0) (not (fp.eq (fp.div roundNearestTiesToEven c_main_~main__x1~0 .cse1) c_main_~main__x1~0))) (= (fp.div roundNearestTiesToEven c_main_~main__x~0 .cse1) c_main_~main__x1~0) (= c_main_~main__x~0 (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven 1.0) .cse1) .cse1) .cse1)) (or (not (fp.eq c_main_~main__x1~0 c_main_~main__x~0)) (fp.eq c_main_~main__x~0 .cse0)))) is different from true [2018-11-18 10:49:30,566 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 11 53) roundNearestTiesToEven (_ bv0 32)))) (and (or (fp.eq c_main_~main__x1~0 .cse0) (not (fp.eq (fp.div roundNearestTiesToEven c_main_~main__x1~0 ((_ to_fp 11 53) roundNearestTiesToEven (/ 8.0 5.0))) c_main_~main__x1~0))) (not (= c_main_~__VERIFIER_assert__cond~0 (_ bv0 32))) (or (not (fp.eq c_main_~main__x1~0 c_main_~main__x~0)) (fp.eq c_main_~main__x~0 .cse0)))) is different from true [2018-11-18 10:49:33,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 10:49:33,986 INFO L93 Difference]: Finished difference Result 19 states and 20 transitions. [2018-11-18 10:49:33,986 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-18 10:49:33,986 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 12 [2018-11-18 10:49:33,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 10:49:33,987 INFO L225 Difference]: With dead ends: 19 [2018-11-18 10:49:33,987 INFO L226 Difference]: Without dead ends: 15 [2018-11-18 10:49:33,987 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 12 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 7 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 49.3s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=12, NotChecked=126, Total=210 [2018-11-18 10:49:33,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2018-11-18 10:49:33,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2018-11-18 10:49:33,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2018-11-18 10:49:33,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2018-11-18 10:49:33,991 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 12 [2018-11-18 10:49:33,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 10:49:33,991 INFO L480 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2018-11-18 10:49:33,991 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-11-18 10:49:33,992 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2018-11-18 10:49:33,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-11-18 10:49:33,992 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 10:49:33,992 INFO L375 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 10:49:33,992 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 10:49:33,992 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 10:49:33,993 INFO L82 PathProgramCache]: Analyzing trace with hash 1226755252, now seen corresponding path program 3 times [2018-11-18 10:49:33,993 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-18 10:49:33,993 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_70a275ff-199a-4f14-b4bc-911e06bd7cf7/bin-2019/utaipan/mathsat Starting monitored process 7 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with mathsat -unsat_core_generation=3 [2018-11-18 10:49:33,996 INFO L101 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2018-11-18 10:49:35,430 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2018-11-18 10:49:35,430 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-18 10:49:35,543 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 10:49:48,417 WARN L180 SmtUtils]: Spent 2.93 s on a formula simplification that was a NOOP. DAG size: 16 [2018-11-18 10:49:48,427 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 10:49:48,427 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-18 10:49:56,581 WARN L854 $PredicateComparison]: unable to prove that (or (fp.eq c_main_~main__x1~0 ((_ to_fp 11 53) roundNearestTiesToEven (_ bv0 32))) (not (fp.eq (fp.div roundNearestTiesToEven c_main_~main__x1~0 ((_ to_fp 11 53) roundNearestTiesToEven (/ 8.0 5.0))) c_main_~main__x1~0))) is different from true [2018-11-18 10:49:59,008 WARN L832 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) roundNearestTiesToEven (/ 8.0 5.0)))) (let ((.cse0 (fp.div roundNearestTiesToEven c_main_~main__x1~0 .cse1))) (or (fp.eq .cse0 ((_ to_fp 11 53) roundNearestTiesToEven (_ bv0 32))) (not (fp.eq (fp.div roundNearestTiesToEven .cse0 .cse1) .cse0))))) is different from false [2018-11-18 10:50:01,426 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) roundNearestTiesToEven (/ 8.0 5.0)))) (let ((.cse0 (fp.div roundNearestTiesToEven c_main_~main__x1~0 .cse1))) (or (fp.eq .cse0 ((_ to_fp 11 53) roundNearestTiesToEven (_ bv0 32))) (not (fp.eq (fp.div roundNearestTiesToEven .cse0 .cse1) .cse0))))) is different from true [2018-11-18 10:50:04,051 WARN L832 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) roundNearestTiesToEven (/ 8.0 5.0)))) (let ((.cse0 (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven c_main_~main__x1~0 .cse1) .cse1))) (or (fp.eq .cse0 ((_ to_fp 11 53) roundNearestTiesToEven (_ bv0 32))) (not (fp.eq (fp.div roundNearestTiesToEven .cse0 .cse1) .cse0))))) is different from false [2018-11-18 10:50:06,684 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) roundNearestTiesToEven (/ 8.0 5.0)))) (let ((.cse0 (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven c_main_~main__x1~0 .cse1) .cse1))) (or (fp.eq .cse0 ((_ to_fp 11 53) roundNearestTiesToEven (_ bv0 32))) (not (fp.eq (fp.div roundNearestTiesToEven .cse0 .cse1) .cse0))))) is different from true [2018-11-18 10:50:09,494 WARN L832 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) roundNearestTiesToEven (/ 8.0 5.0)))) (let ((.cse0 (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven c_main_~main__x1~0 .cse1) .cse1) .cse1))) (or (fp.eq .cse0 ((_ to_fp 11 53) roundNearestTiesToEven (_ bv0 32))) (not (fp.eq (fp.div roundNearestTiesToEven .cse0 .cse1) .cse0))))) is different from false [2018-11-18 10:50:12,294 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) roundNearestTiesToEven (/ 8.0 5.0)))) (let ((.cse0 (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven c_main_~main__x1~0 .cse1) .cse1) .cse1))) (or (fp.eq .cse0 ((_ to_fp 11 53) roundNearestTiesToEven (_ bv0 32))) (not (fp.eq (fp.div roundNearestTiesToEven .cse0 .cse1) .cse0))))) is different from true [2018-11-18 10:50:15,314 WARN L832 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) roundNearestTiesToEven (/ 8.0 5.0)))) (let ((.cse0 (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven c_main_~main__x1~0 .cse1) .cse1) .cse1) .cse1))) (or (fp.eq .cse0 ((_ to_fp 11 53) roundNearestTiesToEven (_ bv0 32))) (not (fp.eq (fp.div roundNearestTiesToEven .cse0 .cse1) .cse0))))) is different from false [2018-11-18 10:50:18,324 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) roundNearestTiesToEven (/ 8.0 5.0)))) (let ((.cse0 (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven c_main_~main__x1~0 .cse1) .cse1) .cse1) .cse1))) (or (fp.eq .cse0 ((_ to_fp 11 53) roundNearestTiesToEven (_ bv0 32))) (not (fp.eq (fp.div roundNearestTiesToEven .cse0 .cse1) .cse0))))) is different from true [2018-11-18 10:50:18,340 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 15 not checked. [2018-11-18 10:50:18,363 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 10:50:18,363 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FPBP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_70a275ff-199a-4f14-b4bc-911e06bd7cf7/bin-2019/utaipan/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 10:50:18,370 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-11-18 10:50:58,341 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2018-11-18 10:50:58,342 INFO L250 tOrderPrioritization]: Conjunction of SSA is unknown [MP z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (8)] Forcibly destroying the process [2018-11-18 10:50:59,725 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 10:50:59,726 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 15 [2018-11-18 10:50:59,726 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-11-18 10:50:59,726 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-11-18 10:50:59,726 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=69, Unknown=13, NotChecked=100, Total=210 [2018-11-18 10:50:59,727 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand 15 states. [2018-11-18 10:51:02,771 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 11 53) roundNearestTiesToEven (/ 8.0 5.0))) (.cse2 ((_ to_fp 11 53) roundNearestTiesToEven (_ bv0 32)))) (and (= (fp.div roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven 1.0) .cse0) c_main_~main__x1~0) (let ((.cse1 (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven c_main_~main__x1~0 .cse0) .cse0) .cse0) .cse0))) (or (fp.eq .cse1 .cse2) (not (fp.eq (fp.div roundNearestTiesToEven .cse1 .cse0) .cse1)))) (or (not (fp.eq c_main_~main__x1~0 c_main_~main__x~0)) (fp.eq c_main_~main__x~0 .cse2)))) is different from true [2018-11-18 10:51:05,621 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) roundNearestTiesToEven (/ 8.0 5.0)))) (and (let ((.cse0 (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven c_main_~main__x1~0 .cse1) .cse1) .cse1))) (or (fp.eq .cse0 ((_ to_fp 11 53) roundNearestTiesToEven (_ bv0 32))) (not (fp.eq (fp.div roundNearestTiesToEven .cse0 .cse1) .cse0)))) (= (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven 1.0) .cse1) .cse1) c_main_~main__x1~0))) is different from true [2018-11-18 10:51:08,270 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) roundNearestTiesToEven (/ 8.0 5.0)))) (and (let ((.cse0 (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven c_main_~main__x1~0 .cse1) .cse1))) (or (fp.eq .cse0 ((_ to_fp 11 53) roundNearestTiesToEven (_ bv0 32))) (not (fp.eq (fp.div roundNearestTiesToEven .cse0 .cse1) .cse0)))) (= (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven 1.0) .cse1) .cse1) .cse1) c_main_~main__x1~0))) is different from true [2018-11-18 10:51:10,703 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) roundNearestTiesToEven (/ 8.0 5.0)))) (and (let ((.cse0 (fp.div roundNearestTiesToEven c_main_~main__x1~0 .cse1))) (or (fp.eq .cse0 ((_ to_fp 11 53) roundNearestTiesToEven (_ bv0 32))) (not (fp.eq (fp.div roundNearestTiesToEven .cse0 .cse1) .cse0)))) (= c_main_~main__x1~0 (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven 1.0) .cse1) .cse1) .cse1) .cse1)))) is different from true [2018-11-18 10:51:19,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 10:51:19,661 INFO L93 Difference]: Finished difference Result 21 states and 22 transitions. [2018-11-18 10:51:19,661 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-11-18 10:51:19,661 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 14 [2018-11-18 10:51:19,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 10:51:19,662 INFO L225 Difference]: With dead ends: 21 [2018-11-18 10:51:19,662 INFO L226 Difference]: Without dead ends: 17 [2018-11-18 10:51:19,662 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 12 SyntacticMatches, 3 SemanticMatches, 18 ConstructedPredicates, 9 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 57.6s TimeCoverageRelationStatistics Valid=40, Invalid=89, Unknown=17, NotChecked=234, Total=380 [2018-11-18 10:51:19,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2018-11-18 10:51:19,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2018-11-18 10:51:19,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2018-11-18 10:51:19,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 17 transitions. [2018-11-18 10:51:19,666 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 17 transitions. Word has length 14 [2018-11-18 10:51:19,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 10:51:19,666 INFO L480 AbstractCegarLoop]: Abstraction has 17 states and 17 transitions. [2018-11-18 10:51:19,666 INFO L481 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-11-18 10:51:19,666 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 17 transitions. [2018-11-18 10:51:19,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-11-18 10:51:19,667 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 10:51:19,667 INFO L375 BasicCegarLoop]: trace histogram [7, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 10:51:19,667 INFO L423 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 10:51:19,667 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 10:51:19,667 INFO L82 PathProgramCache]: Analyzing trace with hash 2088758676, now seen corresponding path program 4 times [2018-11-18 10:51:19,667 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-18 10:51:19,668 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_70a275ff-199a-4f14-b4bc-911e06bd7cf7/bin-2019/utaipan/mathsat Starting monitored process 9 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with mathsat -unsat_core_generation=3 [2018-11-18 10:51:19,672 INFO L101 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-11-18 10:51:21,367 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-11-18 10:51:21,368 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-18 10:51:21,501 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 10:51:37,263 WARN L180 SmtUtils]: Spent 2.75 s on a formula simplification that was a NOOP. DAG size: 18 [2018-11-18 10:51:37,266 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 10:51:37,267 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-18 10:52:02,816 WARN L180 SmtUtils]: Spent 2.81 s on a formula simplification that was a NOOP. DAG size: 7 [2018-11-18 10:52:05,248 WARN L832 $PredicateComparison]: unable to prove that (not (let ((.cse1 ((_ to_fp 11 53) roundNearestTiesToEven (/ 8.0 5.0)))) (let ((.cse0 (fp.div roundNearestTiesToEven c_main_~main__x1~0 .cse1))) (fp.eq (fp.div roundNearestTiesToEven .cse0 .cse1) .cse0)))) is different from false [2018-11-18 10:52:07,675 WARN L854 $PredicateComparison]: unable to prove that (not (let ((.cse1 ((_ to_fp 11 53) roundNearestTiesToEven (/ 8.0 5.0)))) (let ((.cse0 (fp.div roundNearestTiesToEven c_main_~main__x1~0 .cse1))) (fp.eq (fp.div roundNearestTiesToEven .cse0 .cse1) .cse0)))) is different from true [2018-11-18 10:52:10,317 WARN L832 $PredicateComparison]: unable to prove that (not (let ((.cse1 ((_ to_fp 11 53) roundNearestTiesToEven (/ 8.0 5.0)))) (let ((.cse0 (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven c_main_~main__x1~0 .cse1) .cse1))) (fp.eq (fp.div roundNearestTiesToEven .cse0 .cse1) .cse0)))) is different from false [2018-11-18 10:52:12,961 WARN L854 $PredicateComparison]: unable to prove that (not (let ((.cse1 ((_ to_fp 11 53) roundNearestTiesToEven (/ 8.0 5.0)))) (let ((.cse0 (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven c_main_~main__x1~0 .cse1) .cse1))) (fp.eq (fp.div roundNearestTiesToEven .cse0 .cse1) .cse0)))) is different from true [2018-11-18 10:52:15,816 WARN L832 $PredicateComparison]: unable to prove that (not (let ((.cse1 ((_ to_fp 11 53) roundNearestTiesToEven (/ 8.0 5.0)))) (let ((.cse0 (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven c_main_~main__x1~0 .cse1) .cse1) .cse1))) (fp.eq (fp.div roundNearestTiesToEven .cse0 .cse1) .cse0)))) is different from false [2018-11-18 10:52:18,686 WARN L854 $PredicateComparison]: unable to prove that (not (let ((.cse1 ((_ to_fp 11 53) roundNearestTiesToEven (/ 8.0 5.0)))) (let ((.cse0 (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven c_main_~main__x1~0 .cse1) .cse1) .cse1))) (fp.eq (fp.div roundNearestTiesToEven .cse0 .cse1) .cse0)))) is different from true [2018-11-18 10:52:21,745 WARN L832 $PredicateComparison]: unable to prove that (not (let ((.cse1 ((_ to_fp 11 53) roundNearestTiesToEven (/ 8.0 5.0)))) (let ((.cse0 (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven c_main_~main__x1~0 .cse1) .cse1) .cse1) .cse1))) (fp.eq (fp.div roundNearestTiesToEven .cse0 .cse1) .cse0)))) is different from false [2018-11-18 10:52:24,814 WARN L854 $PredicateComparison]: unable to prove that (not (let ((.cse1 ((_ to_fp 11 53) roundNearestTiesToEven (/ 8.0 5.0)))) (let ((.cse0 (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven c_main_~main__x1~0 .cse1) .cse1) .cse1) .cse1))) (fp.eq (fp.div roundNearestTiesToEven .cse0 .cse1) .cse0)))) is different from true [2018-11-18 10:52:28,084 WARN L832 $PredicateComparison]: unable to prove that (not (let ((.cse1 ((_ to_fp 11 53) roundNearestTiesToEven (/ 8.0 5.0)))) (let ((.cse0 (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven c_main_~main__x1~0 .cse1) .cse1) .cse1) .cse1) .cse1))) (fp.eq (fp.div roundNearestTiesToEven .cse0 .cse1) .cse0)))) is different from false [2018-11-18 10:52:31,353 WARN L854 $PredicateComparison]: unable to prove that (not (let ((.cse1 ((_ to_fp 11 53) roundNearestTiesToEven (/ 8.0 5.0)))) (let ((.cse0 (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven c_main_~main__x1~0 .cse1) .cse1) .cse1) .cse1) .cse1))) (fp.eq (fp.div roundNearestTiesToEven .cse0 .cse1) .cse0)))) is different from true [2018-11-18 10:52:34,770 WARN L832 $PredicateComparison]: unable to prove that (not (let ((.cse1 ((_ to_fp 11 53) roundNearestTiesToEven (/ 8.0 5.0)))) (let ((.cse0 (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven c_main_~main__x1~0 .cse1) .cse1) .cse1) .cse1) .cse1) .cse1))) (fp.eq (fp.div roundNearestTiesToEven .cse0 .cse1) .cse0)))) is different from false [2018-11-18 10:52:36,594 WARN L194 Executor]: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000) stderr output: (error "out of memory") [2018-11-18 10:52:36,795 WARN L521 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 mathsat -unsat_core_generation=3 [2018-11-18 10:52:36,796 FATAL L265 ToolchainWalker]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000)Received EOF on stdin. stderr output: (error "out of memory") at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:208) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parseCheckSatResult(Executor.java:225) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.checkSat(Scriptor.java:155) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.WrapperScript.checkSat(WrapperScript.java:116) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.managedscript.ManagedScript.checkSat(ManagedScript.java:141) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.MonolithicImplicationChecker.checkImplication(MonolithicImplicationChecker.java:84) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.predicates.PredicateUnifier$PredicateComparison.compare(PredicateUnifier.java:845) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.predicates.PredicateUnifier$PredicateComparison.(PredicateUnifier.java:767) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate(PredicateUnifier.java:339) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate(PredicateUnifier.java:299) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheckSpWp$UnifyPostprocessor.postprocess(TraceCheckSpWp.java:575) 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.computeBackwardSequence(IterativePredicateTransformer.java:418) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.IterativePredicateTransformer.computeWeakestPreconditionSequence(IterativePredicateTransformer.java:290) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheckSpWp.computeInterpolantsUsingUnsatCore(TraceCheckSpWp.java:330) 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.TraceCheckConstructor.constructForwardBackward(TraceCheckConstructor.java:224) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceCheckConstructor.constructTraceCheck(TraceCheckConstructor.java:188) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceCheckConstructor.get(TraceCheckConstructor.java:165) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.MultiTrackRefinementStrategy.getTraceCheck(MultiTrackRefinementStrategy.java:232) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseRefinementStrategy.checkFeasibility(BaseRefinementStrategy.java:223) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseRefinementStrategy.executeStrategy(BaseRefinementStrategy.java:197) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:70) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:429) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:434) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:376) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterate(TraceAbstractionStarter.java:312) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:123) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) 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$Toolchain.processToolchain(ToolchainManager.java:316) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) Caused by: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: EOF at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser$Action$.CUP$do_action(Parser.java:1427) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser.do_action(Parser.java:630) at com.github.jhoenicke.javacup.runtime.LRParser.parse(LRParser.java:419) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:205) ... 40 more [2018-11-18 10:52:36,801 INFO L168 Benchmark]: Toolchain (without parser) took 303710.83 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 145.2 MB). Free memory was 953.2 MB in the beginning and 959.2 MB in the end (delta: -6.0 MB). Peak memory consumption was 139.3 MB. Max. memory is 11.5 GB. [2018-11-18 10:52:36,803 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 1.0 GB. Free memory is still 978.7 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 10:52:36,803 INFO L168 Benchmark]: CACSL2BoogieTranslator took 172.56 ms. Allocated memory is still 1.0 GB. Free memory was 953.2 MB in the beginning and 942.5 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-11-18 10:52:36,803 INFO L168 Benchmark]: Boogie Procedure Inliner took 13.25 ms. Allocated memory is still 1.0 GB. Free memory was 942.5 MB in the beginning and 937.1 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2018-11-18 10:52:36,804 INFO L168 Benchmark]: Boogie Preprocessor took 14.17 ms. Allocated memory is still 1.0 GB. Free memory is still 937.1 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 10:52:36,804 INFO L168 Benchmark]: RCFGBuilder took 869.48 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 145.2 MB). Free memory was 937.1 MB in the beginning and 1.1 GB in the end (delta: -183.3 MB). Peak memory consumption was 21.7 MB. Max. memory is 11.5 GB. [2018-11-18 10:52:36,805 INFO L168 Benchmark]: TraceAbstraction took 302637.59 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 959.2 MB in the end (delta: 161.2 MB). Peak memory consumption was 161.2 MB. Max. memory is 11.5 GB. [2018-11-18 10:52:36,808 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12 ms. Allocated memory is still 1.0 GB. Free memory is still 978.7 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 172.56 ms. Allocated memory is still 1.0 GB. Free memory was 953.2 MB in the beginning and 942.5 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 13.25 ms. Allocated memory is still 1.0 GB. Free memory was 942.5 MB in the beginning and 937.1 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 14.17 ms. Allocated memory is still 1.0 GB. Free memory is still 937.1 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 869.48 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 145.2 MB). Free memory was 937.1 MB in the beginning and 1.1 GB in the end (delta: -183.3 MB). Peak memory consumption was 21.7 MB. Max. memory is 11.5 GB. * TraceAbstraction took 302637.59 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 959.2 MB in the end (delta: 161.2 MB). Peak memory consumption was 161.2 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000)Received EOF on stdin. stderr output: (error "out of memory") de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000)Received EOF on stdin. stderr output: (error "out of memory") : de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:208) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...