./Ultimate.py --spec ../../sv-benchmarks/c/ReachSafety.prp --file ../../sv-benchmarks/c/float-benchs/rlim_invariant_true-unreach-call_true-termination.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 1dbac8bc Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_c5672d97-0203-405e-ae28-01d7e98279b4/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_c5672d97-0203-405e-ae28-01d7e98279b4/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_c5672d97-0203-405e-ae28-01d7e98279b4/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_c5672d97-0203-405e-ae28-01d7e98279b4/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-benchs/rlim_invariant_true-unreach-call_true-termination.c -s /tmp/vcloud-vcloud-master/worker/working_dir_c5672d97-0203-405e-ae28-01d7e98279b4/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_c5672d97-0203-405e-ae28-01d7e98279b4/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 05489f97023e2a5894acdd30001ad3ce1a478731 .......................................................................................................................................................................................................................................................... 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_c5672d97-0203-405e-ae28-01d7e98279b4/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_c5672d97-0203-405e-ae28-01d7e98279b4/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_c5672d97-0203-405e-ae28-01d7e98279b4/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_c5672d97-0203-405e-ae28-01d7e98279b4/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-benchs/rlim_invariant_true-unreach-call_true-termination.c -s /tmp/vcloud-vcloud-master/worker/working_dir_c5672d97-0203-405e-ae28-01d7e98279b4/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_c5672d97-0203-405e-ae28-01d7e98279b4/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 05489f97023e2a5894acdd30001ad3ce1a478731 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000) Connection to SMT solver broken --- Real Ultimate output --- This is Ultimate 0.1.23-1dbac8b [2018-11-10 05:57:39,469 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-10 05:57:39,470 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-10 05:57:39,478 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-10 05:57:39,478 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-10 05:57:39,479 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-10 05:57:39,479 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-10 05:57:39,480 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-10 05:57:39,481 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-10 05:57:39,482 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-10 05:57:39,482 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-10 05:57:39,483 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-10 05:57:39,483 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-10 05:57:39,484 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-10 05:57:39,485 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-10 05:57:39,485 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-10 05:57:39,486 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-10 05:57:39,487 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-10 05:57:39,488 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-10 05:57:39,489 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-10 05:57:39,490 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-10 05:57:39,490 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-10 05:57:39,492 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-10 05:57:39,492 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-10 05:57:39,492 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-10 05:57:39,493 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-10 05:57:39,493 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-10 05:57:39,494 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-10 05:57:39,495 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-10 05:57:39,495 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-10 05:57:39,495 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-10 05:57:39,496 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-10 05:57:39,496 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-10 05:57:39,496 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-10 05:57:39,497 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-10 05:57:39,497 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-10 05:57:39,497 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_c5672d97-0203-405e-ae28-01d7e98279b4/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2018-11-10 05:57:39,508 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-10 05:57:39,508 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-10 05:57:39,508 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-10 05:57:39,508 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-10 05:57:39,509 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-10 05:57:39,509 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-10 05:57:39,509 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-10 05:57:39,509 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-10 05:57:39,509 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-10 05:57:39,509 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-10 05:57:39,509 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-10 05:57:39,510 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-10 05:57:39,510 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-10 05:57:39,510 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-10 05:57:39,510 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-10 05:57:39,510 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-10 05:57:39,510 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-10 05:57:39,511 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-10 05:57:39,511 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-10 05:57:39,511 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-10 05:57:39,511 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-10 05:57:39,511 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-10 05:57:39,511 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-10 05:57:39,511 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-10 05:57:39,512 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-10 05:57:39,512 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-10 05:57:39,512 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-10 05:57:39,512 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-10 05:57:39,512 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-10 05:57:39,512 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-10 05:57:39,512 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-10 05:57:39,512 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-10 05:57:39,513 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-10 05:57:39,513 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-10 05:57:39,513 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_c5672d97-0203-405e-ae28-01d7e98279b4/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 -> 05489f97023e2a5894acdd30001ad3ce1a478731 [2018-11-10 05:57:39,536 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-10 05:57:39,545 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-10 05:57:39,547 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-10 05:57:39,548 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-10 05:57:39,548 INFO L276 PluginConnector]: CDTParser initialized [2018-11-10 05:57:39,549 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_c5672d97-0203-405e-ae28-01d7e98279b4/bin-2019/utaipan/../../sv-benchmarks/c/float-benchs/rlim_invariant_true-unreach-call_true-termination.c [2018-11-10 05:57:39,584 INFO L218 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_c5672d97-0203-405e-ae28-01d7e98279b4/bin-2019/utaipan/data/523b61115/0e2fe24a3bf44beebb711551d576a7b1/FLAGd9158423f [2018-11-10 05:57:39,986 INFO L298 CDTParser]: Found 1 translation units. [2018-11-10 05:57:39,986 INFO L158 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_c5672d97-0203-405e-ae28-01d7e98279b4/sv-benchmarks/c/float-benchs/rlim_invariant_true-unreach-call_true-termination.c [2018-11-10 05:57:39,990 INFO L346 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_c5672d97-0203-405e-ae28-01d7e98279b4/bin-2019/utaipan/data/523b61115/0e2fe24a3bf44beebb711551d576a7b1/FLAGd9158423f [2018-11-10 05:57:40,000 INFO L354 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_c5672d97-0203-405e-ae28-01d7e98279b4/bin-2019/utaipan/data/523b61115/0e2fe24a3bf44beebb711551d576a7b1 [2018-11-10 05:57:40,002 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-10 05:57:40,003 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-10 05:57:40,004 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-10 05:57:40,004 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-10 05:57:40,006 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-10 05:57:40,007 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 05:57:40" (1/1) ... [2018-11-10 05:57:40,008 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@11661478 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:57:40, skipping insertion in model container [2018-11-10 05:57:40,009 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 05:57:40" (1/1) ... [2018-11-10 05:57:40,015 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-10 05:57:40,029 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-10 05:57:40,131 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-10 05:57:40,133 INFO L189 MainTranslator]: Completed pre-run [2018-11-10 05:57:40,145 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-10 05:57:40,153 INFO L193 MainTranslator]: Completed translation [2018-11-10 05:57:40,154 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:57:40 WrapperNode [2018-11-10 05:57:40,154 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-10 05:57:40,154 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-10 05:57:40,155 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-10 05:57:40,155 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-10 05:57:40,160 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:57:40" (1/1) ... [2018-11-10 05:57:40,163 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:57:40" (1/1) ... [2018-11-10 05:57:40,167 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-10 05:57:40,167 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-10 05:57:40,167 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-10 05:57:40,167 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-10 05:57:40,172 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:57:40" (1/1) ... [2018-11-10 05:57:40,173 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:57:40" (1/1) ... [2018-11-10 05:57:40,173 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:57:40" (1/1) ... [2018-11-10 05:57:40,173 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:57:40" (1/1) ... [2018-11-10 05:57:40,175 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:57:40" (1/1) ... [2018-11-10 05:57:40,178 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:57:40" (1/1) ... [2018-11-10 05:57:40,179 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:57:40" (1/1) ... [2018-11-10 05:57:40,179 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-10 05:57:40,180 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-10 05:57:40,180 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-10 05:57:40,180 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-10 05:57:40,180 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:57:40" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_c5672d97-0203-405e-ae28-01d7e98279b4/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 [2018-11-10 05:57:40,251 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-10 05:57:40,251 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-10 05:57:40,251 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-10 05:57:40,251 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-10 05:57:40,252 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-10 05:57:40,252 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-10 05:57:40,252 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-11-10 05:57:40,252 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-11-10 05:57:40,360 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-10 05:57:40,360 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 05:57:40 BoogieIcfgContainer [2018-11-10 05:57:40,360 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-10 05:57:40,361 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-10 05:57:40,361 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-10 05:57:40,363 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-10 05:57:40,363 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.11 05:57:40" (1/3) ... [2018-11-10 05:57:40,363 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d5f9050 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 05:57:40, skipping insertion in model container [2018-11-10 05:57:40,363 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:57:40" (2/3) ... [2018-11-10 05:57:40,364 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d5f9050 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 05:57:40, skipping insertion in model container [2018-11-10 05:57:40,364 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 05:57:40" (3/3) ... [2018-11-10 05:57:40,365 INFO L112 eAbstractionObserver]: Analyzing ICFG rlim_invariant_true-unreach-call_true-termination.c [2018-11-10 05:57:40,371 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-10 05:57:40,375 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-10 05:57:40,383 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-10 05:57:40,403 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-10 05:57:40,403 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-10 05:57:40,403 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-10 05:57:40,403 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-10 05:57:40,403 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-10 05:57:40,403 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-10 05:57:40,403 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-10 05:57:40,404 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-10 05:57:40,413 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states. [2018-11-10 05:57:40,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-11-10 05:57:40,417 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 05:57:40,417 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 05:57:40,418 INFO L424 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 05:57:40,422 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 05:57:40,422 INFO L82 PathProgramCache]: Analyzing trace with hash 874356560, now seen corresponding path program 1 times [2018-11-10 05:57:40,423 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-10 05:57:40,454 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 05:57:40,454 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 05:57:40,454 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 05:57:40,455 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-10 05:57:40,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 05:57:40,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 05:57:40,502 INFO L442 BasicCegarLoop]: Counterexample might be feasible [2018-11-10 05:57:40,518 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.11 05:57:40 BoogieIcfgContainer [2018-11-10 05:57:40,519 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-10 05:57:40,519 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-10 05:57:40,519 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-10 05:57:40,519 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-10 05:57:40,520 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 05:57:40" (3/4) ... [2018-11-10 05:57:40,523 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-11-10 05:57:40,523 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-10 05:57:40,523 INFO L168 Benchmark]: Toolchain (without parser) took 520.95 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 159.4 MB). Free memory was 959.1 MB in the beginning and 1.1 GB in the end (delta: -167.5 MB). There was no memory consumed. Max. memory is 11.5 GB. [2018-11-10 05:57:40,525 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 1.0 GB. Free memory is still 985.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-10 05:57:40,525 INFO L168 Benchmark]: CACSL2BoogieTranslator took 150.36 ms. Allocated memory is still 1.0 GB. Free memory was 959.1 MB in the beginning and 947.3 MB in the end (delta: 11.8 MB). Peak memory consumption was 11.8 MB. Max. memory is 11.5 GB. [2018-11-10 05:57:40,526 INFO L168 Benchmark]: Boogie Procedure Inliner took 12.53 ms. Allocated memory is still 1.0 GB. Free memory is still 947.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-10 05:57:40,527 INFO L168 Benchmark]: Boogie Preprocessor took 12.32 ms. Allocated memory is still 1.0 GB. Free memory was 947.3 MB in the beginning and 944.6 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-11-10 05:57:40,527 INFO L168 Benchmark]: RCFGBuilder took 180.51 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 159.4 MB). Free memory was 944.6 MB in the beginning and 1.1 GB in the end (delta: -201.5 MB). Peak memory consumption was 19.7 MB. Max. memory is 11.5 GB. [2018-11-10 05:57:40,528 INFO L168 Benchmark]: TraceAbstraction took 158.07 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: 19.6 MB). Peak memory consumption was 19.6 MB. Max. memory is 11.5 GB. [2018-11-10 05:57:40,528 INFO L168 Benchmark]: Witness Printer took 3.96 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. [2018-11-10 05:57:40,531 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 985.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 150.36 ms. Allocated memory is still 1.0 GB. Free memory was 959.1 MB in the beginning and 947.3 MB in the end (delta: 11.8 MB). Peak memory consumption was 11.8 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 12.53 ms. Allocated memory is still 1.0 GB. Free memory is still 947.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 12.32 ms. Allocated memory is still 1.0 GB. Free memory was 947.3 MB in the beginning and 944.6 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 180.51 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 159.4 MB). Free memory was 944.6 MB in the beginning and 1.1 GB in the end (delta: -201.5 MB). Peak memory consumption was 19.7 MB. Max. memory is 11.5 GB. * TraceAbstraction took 158.07 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: 19.6 MB). Peak memory consumption was 19.6 MB. Max. memory is 11.5 GB. * Witness Printer took 3.96 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: 5]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 24, overapproximation of to_real at line 12, overapproximation of someBinaryArithmeticFLOAToperation at line 24. Possible FailurePath: [L9] float X, Y, S, R, D; [L10] int i; [L12] Y = 0 [L14] i = 0 VAL [i=0] [L14] COND TRUE i < 100000 [L16] X = __VERIFIER_nondet_float() [L17] D = __VERIFIER_nondet_float() [L21] S = Y [L22] Y = X [L23] R = X - S VAL [D=4, i=0, S=2, X=3, Y=3] [L24] COND TRUE R <= -D [L24] Y = S - D VAL [D=4, i=0, S=2, X=3] [L27] CALL __VERIFIER_assert(Y >= -129.f && Y <= 129.f) VAL [\old(cond)=0] [L5] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L5] __VERIFIER_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 22 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=22occurred 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, 12 NumberOfCodeBlocks, 12 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 0.1.23-1dbac8b [2018-11-10 05:57:41,935 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-10 05:57:41,936 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-10 05:57:41,943 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-10 05:57:41,943 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-10 05:57:41,944 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-10 05:57:41,945 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-10 05:57:41,946 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-10 05:57:41,947 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-10 05:57:41,948 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-10 05:57:41,948 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-10 05:57:41,949 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-10 05:57:41,949 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-10 05:57:41,950 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-10 05:57:41,951 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-10 05:57:41,951 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-10 05:57:41,952 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-10 05:57:41,953 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-10 05:57:41,954 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-10 05:57:41,955 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-10 05:57:41,956 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-10 05:57:41,957 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-10 05:57:41,959 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-10 05:57:41,959 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-10 05:57:41,959 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-10 05:57:41,960 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-10 05:57:41,960 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-10 05:57:41,961 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-10 05:57:41,961 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-10 05:57:41,962 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-10 05:57:41,962 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-10 05:57:41,963 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-10 05:57:41,963 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-10 05:57:41,963 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-10 05:57:41,964 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-10 05:57:41,964 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-10 05:57:41,964 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_c5672d97-0203-405e-ae28-01d7e98279b4/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2018-11-10 05:57:41,975 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-10 05:57:41,975 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-10 05:57:41,975 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-10 05:57:41,976 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-10 05:57:41,976 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-10 05:57:41,976 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-10 05:57:41,976 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-10 05:57:41,976 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-10 05:57:41,977 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-10 05:57:41,977 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-10 05:57:41,977 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-10 05:57:41,977 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-10 05:57:41,977 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-10 05:57:41,977 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-10 05:57:41,977 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-10 05:57:41,977 INFO L133 SettingsManager]: * Use bitvectors instead of ints=true [2018-11-10 05:57:41,978 INFO L133 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2018-11-10 05:57:41,978 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-10 05:57:41,979 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-10 05:57:41,979 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-10 05:57:41,979 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-10 05:57:41,979 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-10 05:57:41,979 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-10 05:57:41,980 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-10 05:57:41,980 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-10 05:57:41,980 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-10 05:57:41,980 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-10 05:57:41,980 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-10 05:57:41,980 INFO L133 SettingsManager]: * Trace refinement strategy=WALRUS [2018-11-10 05:57:41,980 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-10 05:57:41,980 INFO L133 SettingsManager]: * Command for external solver=cvc4nyu --tear-down-incremental --rewrite-divk --print-success --lang smt [2018-11-10 05:57:41,980 INFO L133 SettingsManager]: * Logic for external solver=AUFBV [2018-11-10 05:57:41,980 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_c5672d97-0203-405e-ae28-01d7e98279b4/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 -> 05489f97023e2a5894acdd30001ad3ce1a478731 [2018-11-10 05:57:42,013 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-10 05:57:42,021 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-10 05:57:42,024 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-10 05:57:42,024 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-10 05:57:42,025 INFO L276 PluginConnector]: CDTParser initialized [2018-11-10 05:57:42,025 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_c5672d97-0203-405e-ae28-01d7e98279b4/bin-2019/utaipan/../../sv-benchmarks/c/float-benchs/rlim_invariant_true-unreach-call_true-termination.c [2018-11-10 05:57:42,061 INFO L218 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_c5672d97-0203-405e-ae28-01d7e98279b4/bin-2019/utaipan/data/6ae5b501f/ccc6983c18e14028b524dd002e4f4b4b/FLAG19626b53d [2018-11-10 05:57:42,457 INFO L298 CDTParser]: Found 1 translation units. [2018-11-10 05:57:42,457 INFO L158 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_c5672d97-0203-405e-ae28-01d7e98279b4/sv-benchmarks/c/float-benchs/rlim_invariant_true-unreach-call_true-termination.c [2018-11-10 05:57:42,461 INFO L346 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_c5672d97-0203-405e-ae28-01d7e98279b4/bin-2019/utaipan/data/6ae5b501f/ccc6983c18e14028b524dd002e4f4b4b/FLAG19626b53d [2018-11-10 05:57:42,470 INFO L354 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_c5672d97-0203-405e-ae28-01d7e98279b4/bin-2019/utaipan/data/6ae5b501f/ccc6983c18e14028b524dd002e4f4b4b [2018-11-10 05:57:42,473 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-10 05:57:42,474 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-10 05:57:42,475 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-10 05:57:42,475 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-10 05:57:42,477 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-10 05:57:42,478 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 05:57:42" (1/1) ... [2018-11-10 05:57:42,480 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1e502643 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:57:42, skipping insertion in model container [2018-11-10 05:57:42,480 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 05:57:42" (1/1) ... [2018-11-10 05:57:42,485 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-10 05:57:42,500 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-10 05:57:42,610 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-10 05:57:42,615 INFO L189 MainTranslator]: Completed pre-run [2018-11-10 05:57:42,630 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-10 05:57:42,641 INFO L193 MainTranslator]: Completed translation [2018-11-10 05:57:42,642 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:57:42 WrapperNode [2018-11-10 05:57:42,642 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-10 05:57:42,643 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-10 05:57:42,643 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-10 05:57:42,643 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-10 05:57:42,650 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:57:42" (1/1) ... [2018-11-10 05:57:42,656 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:57:42" (1/1) ... [2018-11-10 05:57:42,661 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-10 05:57:42,661 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-10 05:57:42,661 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-10 05:57:42,661 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-10 05:57:42,666 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:57:42" (1/1) ... [2018-11-10 05:57:42,667 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:57:42" (1/1) ... [2018-11-10 05:57:42,668 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:57:42" (1/1) ... [2018-11-10 05:57:42,668 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:57:42" (1/1) ... [2018-11-10 05:57:42,671 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:57:42" (1/1) ... [2018-11-10 05:57:42,675 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:57:42" (1/1) ... [2018-11-10 05:57:42,676 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:57:42" (1/1) ... [2018-11-10 05:57:42,678 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-10 05:57:42,678 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-10 05:57:42,678 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-10 05:57:42,678 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-10 05:57:42,679 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:57:42" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_c5672d97-0203-405e-ae28-01d7e98279b4/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 [2018-11-10 05:57:42,719 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-10 05:57:42,719 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-10 05:57:42,720 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-10 05:57:42,720 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-10 05:57:42,720 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-10 05:57:42,720 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-10 05:57:42,720 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-11-10 05:57:42,720 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-11-10 05:57:43,071 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-10 05:57:43,072 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 05:57:43 BoogieIcfgContainer [2018-11-10 05:57:43,072 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-10 05:57:43,073 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-10 05:57:43,073 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-10 05:57:43,075 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-10 05:57:43,076 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.11 05:57:42" (1/3) ... [2018-11-10 05:57:43,076 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@702d3fcc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 05:57:43, skipping insertion in model container [2018-11-10 05:57:43,076 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:57:42" (2/3) ... [2018-11-10 05:57:43,077 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@702d3fcc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 05:57:43, skipping insertion in model container [2018-11-10 05:57:43,077 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 05:57:43" (3/3) ... [2018-11-10 05:57:43,080 INFO L112 eAbstractionObserver]: Analyzing ICFG rlim_invariant_true-unreach-call_true-termination.c [2018-11-10 05:57:43,089 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-10 05:57:43,093 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-10 05:57:43,102 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-10 05:57:43,123 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-11-10 05:57:43,123 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-10 05:57:43,123 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-10 05:57:43,123 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-10 05:57:43,123 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-10 05:57:43,124 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-10 05:57:43,124 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-10 05:57:43,124 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-10 05:57:43,124 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-10 05:57:43,138 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states. [2018-11-10 05:57:43,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-11-10 05:57:43,143 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 05:57:43,143 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 05:57:43,144 INFO L424 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 05:57:43,149 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 05:57:43,149 INFO L82 PathProgramCache]: Analyzing trace with hash 874356560, now seen corresponding path program 1 times [2018-11-10 05:57:43,152 INFO L225 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-10 05:57:43,152 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_c5672d97-0203-405e-ae28-01d7e98279b4/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 [2018-11-10 05:57:43,156 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 05:57:43,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 05:57:43,242 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 05:57:43,375 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 05:57:43,375 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-10 05:57:43,388 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-10 05:57:43,388 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-11-10 05:57:43,390 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-10 05:57:43,400 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-10 05:57:43,400 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2018-11-10 05:57:43,402 INFO L87 Difference]: Start difference. First operand 22 states. Second operand 7 states. [2018-11-10 05:57:44,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 05:57:44,168 INFO L93 Difference]: Finished difference Result 64 states and 85 transitions. [2018-11-10 05:57:44,169 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-10 05:57:44,170 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 12 [2018-11-10 05:57:44,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 05:57:44,175 INFO L225 Difference]: With dead ends: 64 [2018-11-10 05:57:44,175 INFO L226 Difference]: Without dead ends: 33 [2018-11-10 05:57:44,177 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2018-11-10 05:57:44,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2018-11-10 05:57:44,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 25. [2018-11-10 05:57:44,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2018-11-10 05:57:44,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 28 transitions. [2018-11-10 05:57:44,204 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 28 transitions. Word has length 12 [2018-11-10 05:57:44,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 05:57:44,204 INFO L481 AbstractCegarLoop]: Abstraction has 25 states and 28 transitions. [2018-11-10 05:57:44,204 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-10 05:57:44,204 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 28 transitions. [2018-11-10 05:57:44,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-11-10 05:57:44,205 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 05:57:44,205 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 05:57:44,205 INFO L424 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 05:57:44,205 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 05:57:44,205 INFO L82 PathProgramCache]: Analyzing trace with hash 1368016777, now seen corresponding path program 1 times [2018-11-10 05:57:44,206 INFO L225 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-10 05:57:44,207 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_c5672d97-0203-405e-ae28-01d7e98279b4/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 [2018-11-10 05:57:44,220 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 05:57:44,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 05:57:44,287 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 05:57:44,366 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 05:57:44,367 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-10 05:57:44,381 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-10 05:57:44,381 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-11-10 05:57:44,382 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-10 05:57:44,382 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-10 05:57:44,383 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2018-11-10 05:57:44,383 INFO L87 Difference]: Start difference. First operand 25 states and 28 transitions. Second operand 7 states. [2018-11-10 05:57:44,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 05:57:44,944 INFO L93 Difference]: Finished difference Result 40 states and 45 transitions. [2018-11-10 05:57:44,944 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-10 05:57:44,944 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 13 [2018-11-10 05:57:44,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 05:57:44,946 INFO L225 Difference]: With dead ends: 40 [2018-11-10 05:57:44,946 INFO L226 Difference]: Without dead ends: 38 [2018-11-10 05:57:44,947 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2018-11-10 05:57:44,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2018-11-10 05:57:44,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 26. [2018-11-10 05:57:44,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2018-11-10 05:57:44,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 30 transitions. [2018-11-10 05:57:44,951 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 30 transitions. Word has length 13 [2018-11-10 05:57:44,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 05:57:44,952 INFO L481 AbstractCegarLoop]: Abstraction has 26 states and 30 transitions. [2018-11-10 05:57:44,952 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-10 05:57:44,952 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 30 transitions. [2018-11-10 05:57:44,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-11-10 05:57:44,952 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 05:57:44,953 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 05:57:44,953 INFO L424 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 05:57:44,953 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 05:57:44,953 INFO L82 PathProgramCache]: Analyzing trace with hash 1369863819, now seen corresponding path program 1 times [2018-11-10 05:57:44,953 INFO L225 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-10 05:57:44,954 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_c5672d97-0203-405e-ae28-01d7e98279b4/bin-2019/utaipan/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2018-11-10 05:57:44,956 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 05:57:44,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 05:57:44,991 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 05:57:45,016 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 05:57:45,016 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-10 05:57:45,024 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-10 05:57:45,024 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-10 05:57:45,024 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-10 05:57:45,024 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-10 05:57:45,025 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-10 05:57:45,025 INFO L87 Difference]: Start difference. First operand 26 states and 30 transitions. Second operand 5 states. [2018-11-10 05:57:45,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 05:57:45,225 INFO L93 Difference]: Finished difference Result 36 states and 40 transitions. [2018-11-10 05:57:45,226 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-10 05:57:45,226 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2018-11-10 05:57:45,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 05:57:45,227 INFO L225 Difference]: With dead ends: 36 [2018-11-10 05:57:45,227 INFO L226 Difference]: Without dead ends: 34 [2018-11-10 05:57:45,227 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-11-10 05:57:45,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2018-11-10 05:57:45,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 26. [2018-11-10 05:57:45,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2018-11-10 05:57:45,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 30 transitions. [2018-11-10 05:57:45,232 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 30 transitions. Word has length 13 [2018-11-10 05:57:45,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 05:57:45,232 INFO L481 AbstractCegarLoop]: Abstraction has 26 states and 30 transitions. [2018-11-10 05:57:45,232 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-10 05:57:45,232 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 30 transitions. [2018-11-10 05:57:45,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-11-10 05:57:45,233 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 05:57:45,233 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 05:57:45,233 INFO L424 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 05:57:45,233 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 05:57:45,233 INFO L82 PathProgramCache]: Analyzing trace with hash -758059740, now seen corresponding path program 1 times [2018-11-10 05:57:45,234 INFO L225 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-10 05:57:45,234 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_c5672d97-0203-405e-ae28-01d7e98279b4/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 [2018-11-10 05:57:45,237 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 05:57:45,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 05:57:45,411 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 05:57:46,809 WARN L179 SmtUtils]: Spent 1.25 s on a formula simplification that was a NOOP. DAG size: 25 [2018-11-10 05:57:49,087 WARN L854 $PredicateComparison]: unable to prove that (exists ((main_~X~0 (_ FloatingPoint 8 24)) (main_~S~0 (_ FloatingPoint 8 24)) (main_~D~0 (_ FloatingPoint 8 24))) (let ((.cse0 ((_ to_fp 8 24) RNE 128.0)) (.cse1 ((_ to_fp 8 24) RNE 129.0))) (and (fp.geq main_~X~0 (fp.neg .cse0)) (fp.leq main_~S~0 .cse1) (fp.leq main_~X~0 .cse0) (fp.leq (fp.sub RNE main_~X~0 main_~S~0) (fp.neg main_~D~0)) (= c_main_~Y~0 (fp.sub RNE main_~S~0 main_~D~0)) (fp.geq main_~D~0 (_ +zero 8 24)) (fp.leq main_~D~0 ((_ to_fp 8 24) RNE 16.0)) (fp.geq main_~S~0 (fp.neg .cse1))))) is different from true [2018-11-10 05:58:05,503 WARN L179 SmtUtils]: Spent 6.10 s on a formula simplification. DAG size of input: 35 DAG size of output: 5 [2018-11-10 05:58:05,542 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 05:58:05,542 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-10 05:58:08,542 WARN L179 SmtUtils]: Spent 507.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2018-11-10 05:58:10,587 WARN L854 $PredicateComparison]: unable to prove that (and (forall ((v_prenex_1 (_ FloatingPoint 8 24)) (v_prenex_2 (_ FloatingPoint 8 24))) (let ((.cse0 ((_ to_fp 8 24) RNE 128.0))) (or (not (fp.leq (fp.sub RNE v_prenex_2 c_main_~Y~0) (fp.neg v_prenex_1))) (fp.geq (fp.sub RNE c_main_~Y~0 v_prenex_1) (fp.neg ((_ to_fp 8 24) RNE 129.0))) (not (fp.leq v_prenex_1 ((_ to_fp 8 24) RNE 16.0))) (not (fp.geq v_prenex_2 (fp.neg .cse0))) (not (fp.leq v_prenex_2 .cse0)) (not (fp.geq v_prenex_1 (_ +zero 8 24)))))) (forall ((v_main_~D~0_7 (_ FloatingPoint 8 24)) (v_main_~X~0_3 (_ FloatingPoint 8 24))) (let ((.cse1 ((_ to_fp 8 24) RNE 128.0))) (or (not (fp.leq v_main_~X~0_3 .cse1)) (not (fp.leq (fp.sub RNE v_main_~X~0_3 c_main_~Y~0) (fp.neg v_main_~D~0_7))) (fp.leq (fp.sub RNE c_main_~Y~0 v_main_~D~0_7) ((_ to_fp 8 24) RNE 129.0)) (not (fp.geq v_main_~D~0_7 (_ +zero 8 24))) (not (fp.geq v_main_~X~0_3 (fp.neg .cse1))) (not (fp.leq v_main_~D~0_7 ((_ to_fp 8 24) RNE 16.0))))))) is different from true [2018-11-10 05:58:19,662 WARN L832 $PredicateComparison]: unable to prove that (forall ((v_prenex_1 (_ FloatingPoint 8 24)) (v_prenex_2 (_ FloatingPoint 8 24)) (main_~Y~0 (_ FloatingPoint 8 24))) (let ((.cse1 ((_ to_fp 8 24) RNE 129.0))) (let ((.cse2 ((_ to_fp 8 24) RNE 128.0)) (.cse0 (fp.neg .cse1))) (or (not (fp.leq (fp.sub RNE v_prenex_2 main_~Y~0) (fp.neg v_prenex_1))) (fp.geq (fp.sub RNE main_~Y~0 v_prenex_1) .cse0) (not (fp.leq main_~Y~0 .cse1)) (not (fp.leq v_prenex_1 ((_ to_fp 8 24) RNE 16.0))) (not (fp.geq v_prenex_2 (fp.neg .cse2))) (not (fp.leq v_prenex_2 .cse2)) (not (fp.geq v_prenex_1 (_ +zero 8 24))) (not (fp.geq main_~Y~0 .cse0)))))) is different from false [2018-11-10 05:58:21,669 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_prenex_1 (_ FloatingPoint 8 24)) (v_prenex_2 (_ FloatingPoint 8 24)) (main_~Y~0 (_ FloatingPoint 8 24))) (let ((.cse1 ((_ to_fp 8 24) RNE 129.0))) (let ((.cse2 ((_ to_fp 8 24) RNE 128.0)) (.cse0 (fp.neg .cse1))) (or (not (fp.leq (fp.sub RNE v_prenex_2 main_~Y~0) (fp.neg v_prenex_1))) (fp.geq (fp.sub RNE main_~Y~0 v_prenex_1) .cse0) (not (fp.leq main_~Y~0 .cse1)) (not (fp.leq v_prenex_1 ((_ to_fp 8 24) RNE 16.0))) (not (fp.geq v_prenex_2 (fp.neg .cse2))) (not (fp.leq v_prenex_2 .cse2)) (not (fp.geq v_prenex_1 (_ +zero 8 24))) (not (fp.geq main_~Y~0 .cse0)))))) is different from true [2018-11-10 05:58:21,678 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 05:58:21,679 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FPBP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_c5672d97-0203-405e-ae28-01d7e98279b4/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 [2018-11-10 05:58:21,685 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 05:58:22,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 05:58:22,239 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 05:58:30,482 WARN L179 SmtUtils]: Spent 175.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2018-11-10 05:58:30,726 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 4 refuted. 1 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 05:58:30,726 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-10 05:58:33,606 WARN L179 SmtUtils]: Spent 871.00 ms on a formula simplification that was a NOOP. DAG size: 17 [2018-11-10 05:58:43,135 WARN L179 SmtUtils]: Spent 1.03 s on a formula simplification that was a NOOP. DAG size: 35 [2018-11-10 05:58:45,176 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse2 ((_ to_fp 8 24) RNE 129.0))) (let ((.cse0 (not (fp.leq c_main_~Y~0 .cse2))) (.cse1 (not (fp.geq c_main_~Y~0 (fp.neg .cse2))))) (and (or (forall ((v_prenex_5 (_ FloatingPoint 8 24)) (v_prenex_6 (_ FloatingPoint 8 24))) (or (fp.leq (fp.sub RNE c_main_~Y~0 v_prenex_5) ((_ to_fp 8 24) RNE 129.0)) (not (fp.leq v_prenex_6 (fp.neg v_prenex_5))) (not (fp.leq v_prenex_5 ((_ to_fp 8 24) RNE 16.0))) (not (fp.geq v_prenex_5 (_ +zero 8 24))))) .cse0 .cse1) (or .cse0 (forall ((v_main_~D~0_8 (_ FloatingPoint 8 24)) (main_~R~0 (_ FloatingPoint 8 24))) (or (not (fp.leq main_~R~0 (fp.neg v_main_~D~0_8))) (fp.geq (fp.sub RNE c_main_~Y~0 v_main_~D~0_8) (fp.neg ((_ to_fp 8 24) RNE 129.0))) (not (fp.leq v_main_~D~0_8 ((_ to_fp 8 24) RNE 16.0))) (not (fp.geq v_main_~D~0_8 (_ +zero 8 24))))) .cse1)))) is different from true [2018-11-10 05:58:45,196 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-10 05:58:45,196 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 11] total 14 [2018-11-10 05:58:45,197 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-11-10 05:58:45,197 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-11-10 05:58:45,197 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=223, Unknown=9, NotChecked=132, Total=420 [2018-11-10 05:58:45,197 INFO L87 Difference]: Start difference. First operand 26 states and 30 transitions. Second operand 14 states. [2018-11-10 05:58:47,637 WARN L179 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 29 [2018-11-10 05:59:02,093 WARN L179 SmtUtils]: Spent 11.41 s on a formula simplification. DAG size of input: 40 DAG size of output: 40 [2018-11-10 05:59:06,305 WARN L179 SmtUtils]: Spent 296.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 30 [2018-11-10 05:59:11,572 WARN L179 SmtUtils]: Spent 1.98 s on a formula simplification. DAG size of input: 39 DAG size of output: 37 [2018-11-10 06:00:15,256 WARN L179 SmtUtils]: Spent 32.91 s on a formula simplification. DAG size of input: 50 DAG size of output: 50 [2018-11-10 06:00:30,262 WARN L179 SmtUtils]: Spent 809.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2018-11-10 06:01:06,038 WARN L179 SmtUtils]: Spent 9.42 s on a formula simplification that was a NOOP. DAG size: 32 [2018-11-10 06:01:12,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 06:01:12,511 INFO L93 Difference]: Finished difference Result 49 states and 60 transitions. [2018-11-10 06:01:12,523 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-11-10 06:01:12,523 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 21 [2018-11-10 06:01:12,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 06:01:12,524 INFO L225 Difference]: With dead ends: 49 [2018-11-10 06:01:12,524 INFO L226 Difference]: Without dead ends: 47 [2018-11-10 06:01:12,524 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 42 SyntacticMatches, 2 SemanticMatches, 28 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 166.5s TimeCoverageRelationStatistics Valid=137, Invalid=499, Unknown=30, NotChecked=204, Total=870 [2018-11-10 06:01:12,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2018-11-10 06:01:12,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 37. [2018-11-10 06:01:12,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2018-11-10 06:01:12,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 44 transitions. [2018-11-10 06:01:12,534 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 44 transitions. Word has length 21 [2018-11-10 06:01:12,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 06:01:12,535 INFO L481 AbstractCegarLoop]: Abstraction has 37 states and 44 transitions. [2018-11-10 06:01:12,535 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-11-10 06:01:12,535 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 44 transitions. [2018-11-10 06:01:12,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-11-10 06:01:12,536 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 06:01:12,536 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 06:01:12,536 INFO L424 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 06:01:12,536 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 06:01:12,536 INFO L82 PathProgramCache]: Analyzing trace with hash 199698734, now seen corresponding path program 1 times [2018-11-10 06:01:12,537 INFO L225 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-10 06:01:12,537 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_c5672d97-0203-405e-ae28-01d7e98279b4/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 [2018-11-10 06:01:12,539 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 06:01:12,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 06:01:12,662 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 06:01:14,373 WARN L179 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 18 [2018-11-10 06:01:15,114 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 06:01:15,115 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-10 06:01:18,074 WARN L179 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 10 [2018-11-10 06:01:25,283 WARN L179 SmtUtils]: Spent 479.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2018-11-10 06:01:27,325 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse2 ((_ to_fp 8 24) RNE 129.0))) (let ((.cse0 (not (fp.leq c_main_~Y~0 .cse2))) (.cse1 (not (fp.geq c_main_~Y~0 (fp.neg .cse2))))) (and (or (forall ((v_main_~D~0_9 (_ FloatingPoint 8 24))) (or (fp.geq (fp.add RNE c_main_~Y~0 v_main_~D~0_9) (fp.neg ((_ to_fp 8 24) RNE 129.0))) (not (fp.geq v_main_~D~0_9 (_ +zero 8 24))) (not (fp.leq v_main_~D~0_9 ((_ to_fp 8 24) RNE 16.0))))) .cse0 .cse1) (or .cse0 (forall ((v_prenex_8 (_ FloatingPoint 8 24))) (or (not (fp.geq v_prenex_8 (_ +zero 8 24))) (fp.leq (fp.add RNE c_main_~Y~0 v_prenex_8) ((_ to_fp 8 24) RNE 129.0)) (not (fp.leq v_prenex_8 ((_ to_fp 8 24) RNE 16.0))))) .cse1)))) is different from true [2018-11-10 06:01:27,333 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 06:01:27,333 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FPBP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_c5672d97-0203-405e-ae28-01d7e98279b4/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 [2018-11-10 06:01:27,338 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 06:01:28,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 06:01:28,123 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 06:01:30,004 WARN L179 SmtUtils]: Spent 1.01 s on a formula simplification that was a NOOP. DAG size: 29 [2018-11-10 06:01:33,910 WARN L179 SmtUtils]: Spent 2.75 s on a formula simplification that was a NOOP. DAG size: 32 [2018-11-10 06:01:58,462 WARN L179 SmtUtils]: Spent 1.50 s on a formula simplification that was a NOOP. DAG size: 29 [2018-11-10 06:01:59,150 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 06:01:59,150 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-10 06:02:00,912 WARN L179 SmtUtils]: Spent 708.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2018-11-10 06:02:02,918 WARN L179 SmtUtils]: Spent 615.00 ms on a formula simplification that was a NOOP. DAG size: 16 [2018-11-10 06:02:28,759 WARN L179 SmtUtils]: Spent 3.40 s on a formula simplification that was a NOOP. DAG size: 50 [2018-11-10 06:02:30,832 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse6 ((_ to_fp 8 24) RNE 129.0))) (let ((.cse0 (not (fp.leq c_main_~Y~0 .cse6))) (.cse3 (not (fp.geq c_main_~Y~0 (fp.neg .cse6))))) (and (or .cse0 (forall ((v_main_~X~0_6 (_ FloatingPoint 8 24)) (v_main_~D~0_10 (_ FloatingPoint 8 24))) (let ((.cse1 (fp.sub RNE v_main_~X~0_6 c_main_~Y~0)) (.cse2 ((_ to_fp 8 24) RNE 128.0))) (or (not (fp.geq .cse1 v_main_~D~0_10)) (not (fp.leq v_main_~D~0_10 ((_ to_fp 8 24) RNE 16.0))) (not (fp.leq v_main_~X~0_6 .cse2)) (fp.leq .cse1 (fp.neg v_main_~D~0_10)) (fp.geq (fp.add RNE c_main_~Y~0 v_main_~D~0_10) (fp.neg ((_ to_fp 8 24) RNE 129.0))) (not (fp.geq v_main_~D~0_10 (_ +zero 8 24))) (not (fp.geq v_main_~X~0_6 (fp.neg .cse2)))))) .cse3) (or .cse0 (forall ((v_prenex_11 (_ FloatingPoint 8 24)) (v_prenex_10 (_ FloatingPoint 8 24))) (let ((.cse5 ((_ to_fp 8 24) RNE 128.0)) (.cse4 (fp.sub RNE v_prenex_10 c_main_~Y~0))) (or (not (fp.geq v_prenex_11 (_ +zero 8 24))) (not (fp.leq v_prenex_11 ((_ to_fp 8 24) RNE 16.0))) (fp.leq .cse4 (fp.neg v_prenex_11)) (fp.leq (fp.add RNE c_main_~Y~0 v_prenex_11) ((_ to_fp 8 24) RNE 129.0)) (not (fp.geq v_prenex_10 (fp.neg .cse5))) (not (fp.leq v_prenex_10 .cse5)) (not (fp.geq .cse4 v_prenex_11))))) .cse3)))) is different from true [2018-11-10 06:02:30,853 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-10 06:02:30,853 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12] total 14 [2018-11-10 06:02:30,853 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-11-10 06:02:30,853 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-11-10 06:02:30,854 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=337, Unknown=12, NotChecked=78, Total=506 [2018-11-10 06:02:30,854 INFO L87 Difference]: Start difference. First operand 37 states and 44 transitions. Second operand 14 states. [2018-11-10 06:02:34,980 WARN L179 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 23 [2018-11-10 06:02:37,969 WARN L179 SmtUtils]: Spent 275.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 26 [2018-11-10 06:02:50,347 WARN L179 SmtUtils]: Spent 10.68 s on a formula simplification. DAG size of input: 46 DAG size of output: 43 [2018-11-10 06:03:02,203 WARN L179 SmtUtils]: Spent 333.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 31 [2018-11-10 06:03:26,564 WARN L179 SmtUtils]: Spent 8.18 s on a formula simplification that was a NOOP. DAG size: 41 [2018-11-10 06:03:44,337 WARN L179 SmtUtils]: Spent 2.14 s on a formula simplification that was a NOOP. DAG size: 41 [2018-11-10 06:03:50,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 06:03:50,165 INFO L93 Difference]: Finished difference Result 69 states and 81 transitions. [2018-11-10 06:03:50,172 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-11-10 06:03:50,172 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 23 [2018-11-10 06:03:50,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 06:03:50,174 INFO L225 Difference]: With dead ends: 69 [2018-11-10 06:03:50,174 INFO L226 Difference]: Without dead ends: 67 [2018-11-10 06:03:50,175 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 41 SyntacticMatches, 2 SemanticMatches, 29 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 134 ImplicationChecksByTransitivity, 135.8s TimeCoverageRelationStatistics Valid=169, Invalid=627, Unknown=24, NotChecked=110, Total=930 [2018-11-10 06:03:50,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2018-11-10 06:03:50,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 42. [2018-11-10 06:03:50,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2018-11-10 06:03:50,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 49 transitions. [2018-11-10 06:03:50,188 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 49 transitions. Word has length 23 [2018-11-10 06:03:50,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 06:03:50,188 INFO L481 AbstractCegarLoop]: Abstraction has 42 states and 49 transitions. [2018-11-10 06:03:50,188 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-11-10 06:03:50,188 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 49 transitions. [2018-11-10 06:03:50,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-11-10 06:03:50,189 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 06:03:50,189 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 06:03:50,189 INFO L424 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 06:03:50,189 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 06:03:50,189 INFO L82 PathProgramCache]: Analyzing trace with hash -1080164944, now seen corresponding path program 1 times [2018-11-10 06:03:50,190 INFO L225 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-10 06:03:50,190 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_c5672d97-0203-405e-ae28-01d7e98279b4/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 [2018-11-10 06:03:50,194 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 06:03:50,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 06:03:50,326 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 06:03:51,676 WARN L179 SmtUtils]: Spent 1.08 s on a formula simplification that was a NOOP. DAG size: 22 [2018-11-10 06:03:53,259 WARN L179 SmtUtils]: Spent 1.22 s on a formula simplification that was a NOOP. DAG size: 25 [2018-11-10 06:03:55,375 WARN L854 $PredicateComparison]: unable to prove that (exists ((main_~X~0 (_ FloatingPoint 8 24)) (main_~S~0 (_ FloatingPoint 8 24)) (main_~D~0 (_ FloatingPoint 8 24))) (let ((.cse2 ((_ to_fp 8 24) RNE 128.0))) (let ((.cse1 (fp.neg .cse2)) (.cse0 (fp.sub RNE main_~X~0 main_~S~0))) (and (not (fp.leq .cse0 (fp.neg main_~D~0))) (fp.geq main_~S~0 .cse1) (fp.geq main_~X~0 .cse1) (fp.geq .cse0 main_~D~0) (fp.leq main_~X~0 .cse2) (fp.leq main_~S~0 .cse2) (fp.geq main_~D~0 (_ +zero 8 24)) (fp.leq main_~D~0 ((_ to_fp 8 24) RNE 16.0)) (= (fp.add RNE main_~S~0 main_~D~0) c_main_~Y~0))))) is different from true [2018-11-10 06:04:03,532 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2018-11-10 06:04:03,532 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-10 06:04:09,566 WARN L179 SmtUtils]: Spent 764.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2018-11-10 06:04:15,549 WARN L179 SmtUtils]: Spent 823.00 ms on a formula simplification that was a NOOP. DAG size: 16 [2018-11-10 06:04:39,748 WARN L179 SmtUtils]: Spent 4.90 s on a formula simplification that was a NOOP. DAG size: 50 [2018-11-10 06:04:41,804 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse6 ((_ to_fp 8 24) RNE 129.0))) (let ((.cse2 (not (fp.leq c_main_~Y~0 .cse6))) (.cse3 (not (fp.geq c_main_~Y~0 (fp.neg .cse6))))) (and (or (forall ((v_main_~X~0_7 (_ FloatingPoint 8 24)) (v_main_~D~0_11 (_ FloatingPoint 8 24))) (let ((.cse0 ((_ to_fp 8 24) RNE 128.0)) (.cse1 (fp.sub RNE v_main_~X~0_7 c_main_~Y~0))) (or (not (fp.leq v_main_~D~0_11 ((_ to_fp 8 24) RNE 16.0))) (not (fp.geq v_main_~X~0_7 (fp.neg .cse0))) (not (fp.leq v_main_~X~0_7 .cse0)) (not (fp.geq .cse1 v_main_~D~0_11)) (not (fp.geq v_main_~D~0_11 (_ +zero 8 24))) (fp.geq (fp.add RNE c_main_~Y~0 v_main_~D~0_11) (fp.neg ((_ to_fp 8 24) RNE 129.0))) (fp.leq .cse1 (fp.neg v_main_~D~0_11))))) .cse2 .cse3) (or (forall ((v_prenex_13 (_ FloatingPoint 8 24)) (v_prenex_12 (_ FloatingPoint 8 24))) (let ((.cse4 (fp.sub RNE v_prenex_12 c_main_~Y~0)) (.cse5 ((_ to_fp 8 24) RNE 128.0))) (or (not (fp.geq .cse4 v_prenex_13)) (fp.leq .cse4 (fp.neg v_prenex_13)) (not (fp.geq v_prenex_13 (_ +zero 8 24))) (not (fp.leq v_prenex_12 .cse5)) (fp.leq (fp.add RNE c_main_~Y~0 v_prenex_13) ((_ to_fp 8 24) RNE 129.0)) (not (fp.geq v_prenex_12 (fp.neg .cse5))) (not (fp.leq v_prenex_13 ((_ to_fp 8 24) RNE 16.0)))))) .cse2 .cse3)))) is different from true [2018-11-10 06:04:41,812 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 06:04:41,812 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FPBP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_c5672d97-0203-405e-ae28-01d7e98279b4/bin-2019/utaipan/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-10 06:04:41,817 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 06:04:44,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 06:04:44,136 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 06:05:43,576 WARN L179 SmtUtils]: Spent 2.04 s on a formula simplification that was a NOOP. DAG size: 29 [2018-11-10 06:05:47,851 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 06:05:47,851 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-10 06:05:56,225 WARN L179 SmtUtils]: Spent 996.00 ms on a formula simplification that was a NOOP. DAG size: 16 [2018-11-10 06:06:27,971 WARN L179 SmtUtils]: Spent 619.00 ms on a formula simplification that was a NOOP. DAG size: 33 [2018-11-10 06:06:30,021 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse2 ((_ to_fp 8 24) RNE 129.0))) (let ((.cse0 (not (fp.leq c_main_~Y~0 .cse2))) (.cse1 (not (fp.geq c_main_~Y~0 (fp.neg .cse2))))) (and (or (forall ((v_prenex_17 (_ FloatingPoint 8 24)) (v_prenex_16 (_ FloatingPoint 8 24))) (or (not (fp.geq v_prenex_16 v_prenex_17)) (fp.leq (fp.add RNE c_main_~Y~0 v_prenex_17) ((_ to_fp 8 24) RNE 129.0)) (not (fp.geq v_prenex_17 (_ +zero 8 24))) (not (fp.leq v_prenex_17 ((_ to_fp 8 24) RNE 16.0))))) .cse0 .cse1) (or .cse0 .cse1 (forall ((main_~R~0 (_ FloatingPoint 8 24)) (v_main_~D~0_12 (_ FloatingPoint 8 24))) (or (not (fp.geq v_main_~D~0_12 (_ +zero 8 24))) (not (fp.geq main_~R~0 v_main_~D~0_12)) (not (fp.leq v_main_~D~0_12 ((_ to_fp 8 24) RNE 16.0))) (fp.geq (fp.add RNE c_main_~Y~0 v_main_~D~0_12) (fp.neg ((_ to_fp 8 24) RNE 129.0))))))))) is different from true [2018-11-10 06:06:30,042 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-10 06:06:30,042 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 12] total 16 [2018-11-10 06:06:30,042 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-11-10 06:06:30,042 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-11-10 06:06:30,042 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=358, Unknown=43, NotChecked=126, Total=600 [2018-11-10 06:06:30,043 INFO L87 Difference]: Start difference. First operand 42 states and 49 transitions. Second operand 16 states. [2018-11-10 06:06:47,082 WARN L179 SmtUtils]: Spent 7.94 s on a formula simplification. DAG size of input: 40 DAG size of output: 38 [2018-11-10 06:07:00,233 WARN L179 SmtUtils]: Spent 4.23 s on a formula simplification. DAG size of input: 35 DAG size of output: 34 [2018-11-10 06:07:15,538 WARN L179 SmtUtils]: Spent 5.97 s on a formula simplification. DAG size of input: 42 DAG size of output: 40 [2018-11-10 06:08:36,899 WARN L179 SmtUtils]: Spent 53.43 s on a formula simplification. DAG size of input: 49 DAG size of output: 49 [2018-11-10 06:08:56,707 WARN L179 SmtUtils]: Spent 8.06 s on a formula simplification. DAG size of input: 48 DAG size of output: 46 [2018-11-10 06:09:10,001 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) Connection to SMT solver broken at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.input(Executor.java:123) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.pop(Scriptor.java:139) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.arrays.DiffWrapperScript.pop(DiffWrapperScript.java:102) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.managedscript.ManagedScript.pop(ManagedScript.java:131) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.unAssertPostcondition(IncrementalHoareTripleChecker.java:650) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.clearAssertionStack(IncrementalHoareTripleChecker.java:254) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.releaseLock(IncrementalHoareTripleChecker.java:269) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.ProtectiveHoareTripleChecker.releaseLock(ProtectiveHoareTripleChecker.java:94) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.EfficientHoareTripleChecker.releaseLock(EfficientHoareTripleChecker.java:164) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.CachingHoareTripleChecker.releaseLock(CachingHoareTripleChecker.java:202) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.switchToReadonlyMode(AbstractInterpolantAutomaton.java:141) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.computeAutomataDifference(BasicCegarLoop.java:689) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.refineAbstraction(BasicCegarLoop.java:602) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:473) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java: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: java.io.IOException: Stream closed at java.lang.ProcessBuilder$NullOutputStream.write(ProcessBuilder.java:433) at java.io.OutputStream.write(OutputStream.java:116) at java.io.BufferedOutputStream.flushBuffer(BufferedOutputStream.java:82) at java.io.BufferedOutputStream.flush(BufferedOutputStream.java:140) at sun.nio.cs.StreamEncoder.implFlush(StreamEncoder.java:297) at sun.nio.cs.StreamEncoder.flush(StreamEncoder.java:141) at java.io.OutputStreamWriter.flush(OutputStreamWriter.java:229) at java.io.BufferedWriter.flush(BufferedWriter.java:254) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.input(Executor.java:120) ... 28 more [2018-11-10 06:09:10,003 INFO L168 Benchmark]: Toolchain (without parser) took 687529.54 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 206.0 MB). Free memory was 949.8 MB in the beginning and 915.2 MB in the end (delta: 34.6 MB). Peak memory consumption was 240.6 MB. Max. memory is 11.5 GB. [2018-11-10 06:09:10,003 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. [2018-11-10 06:09:10,004 INFO L168 Benchmark]: CACSL2BoogieTranslator took 167.31 ms. Allocated memory is still 1.0 GB. Free memory was 949.8 MB in the beginning and 939.0 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-11-10 06:09:10,004 INFO L168 Benchmark]: Boogie Procedure Inliner took 18.51 ms. Allocated memory is still 1.0 GB. Free memory was 939.0 MB in the beginning and 933.6 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2018-11-10 06:09:10,005 INFO L168 Benchmark]: Boogie Preprocessor took 16.66 ms. Allocated memory is still 1.0 GB. Free memory is still 933.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-10 06:09:10,005 INFO L168 Benchmark]: RCFGBuilder took 393.82 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 149.4 MB). Free memory was 933.6 MB in the beginning and 1.1 GB in the end (delta: -201.5 MB). Peak memory consumption was 21.2 MB. Max. memory is 11.5 GB. [2018-11-10 06:09:10,005 INFO L168 Benchmark]: TraceAbstraction took 686929.73 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 56.6 MB). Free memory was 1.1 GB in the beginning and 915.2 MB in the end (delta: 220.0 MB). Peak memory consumption was 276.6 MB. Max. memory is 11.5 GB. [2018-11-10 06:09:10,007 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 167.31 ms. Allocated memory is still 1.0 GB. Free memory was 949.8 MB in the beginning and 939.0 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 18.51 ms. Allocated memory is still 1.0 GB. Free memory was 939.0 MB in the beginning and 933.6 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 16.66 ms. Allocated memory is still 1.0 GB. Free memory is still 933.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 393.82 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 149.4 MB). Free memory was 933.6 MB in the beginning and 1.1 GB in the end (delta: -201.5 MB). Peak memory consumption was 21.2 MB. Max. memory is 11.5 GB. * TraceAbstraction took 686929.73 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 56.6 MB). Free memory was 1.1 GB in the beginning and 915.2 MB in the end (delta: 220.0 MB). Peak memory consumption was 276.6 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) Connection to SMT solver broken de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000) Connection to SMT solver broken: de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.input(Executor.java:123) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...