./Ultimate.py --spec ../../sv-benchmarks/c/ReachSafety.prp --file ../../sv-benchmarks/c/float-benchs/rlim_invariant_true-unreach-call.c.v+lhb-reducer.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_13079a31-e541-460c-a288-f64f528eb677/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_13079a31-e541-460c-a288-f64f528eb677/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_13079a31-e541-460c-a288-f64f528eb677/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_13079a31-e541-460c-a288-f64f528eb677/bin-2019/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-benchs/rlim_invariant_true-unreach-call.c.v+lhb-reducer.c -s /tmp/vcloud-vcloud-master/worker/working_dir_13079a31-e541-460c-a288-f64f528eb677/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_13079a31-e541-460c-a288-f64f528eb677/bin-2019/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 22373866aae52af60bd2dae8e24bb583522182de .......................................................................................................................................................................................................................................................................................................................... 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_13079a31-e541-460c-a288-f64f528eb677/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_13079a31-e541-460c-a288-f64f528eb677/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_13079a31-e541-460c-a288-f64f528eb677/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_13079a31-e541-460c-a288-f64f528eb677/bin-2019/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-benchs/rlim_invariant_true-unreach-call.c.v+lhb-reducer.c -s /tmp/vcloud-vcloud-master/worker/working_dir_13079a31-e541-460c-a288-f64f528eb677/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_13079a31-e541-460c-a288-f64f528eb677/bin-2019/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 22373866aae52af60bd2dae8e24bb583522182de .......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 [2018-10-26 21:44:48,115 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-26 21:44:48,116 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-26 21:44:48,125 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-26 21:44:48,125 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-26 21:44:48,126 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-26 21:44:48,127 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-26 21:44:48,129 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-26 21:44:48,130 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-26 21:44:48,131 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-26 21:44:48,131 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-26 21:44:48,132 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-26 21:44:48,133 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-26 21:44:48,134 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-26 21:44:48,135 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-26 21:44:48,135 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-26 21:44:48,137 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-26 21:44:48,138 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-26 21:44:48,140 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-26 21:44:48,142 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-26 21:44:48,143 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-26 21:44:48,144 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-26 21:44:48,146 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-26 21:44:48,146 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-26 21:44:48,147 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-26 21:44:48,147 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-26 21:44:48,149 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-26 21:44:48,150 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-26 21:44:48,151 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-26 21:44:48,152 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-26 21:44:48,153 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-26 21:44:48,153 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-26 21:44:48,153 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-26 21:44:48,154 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-26 21:44:48,154 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-26 21:44:48,155 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-26 21:44:48,155 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_13079a31-e541-460c-a288-f64f528eb677/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2018-10-26 21:44:48,172 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-26 21:44:48,176 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-26 21:44:48,177 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-26 21:44:48,177 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-26 21:44:48,178 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-26 21:44:48,178 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-26 21:44:48,178 INFO L133 SettingsManager]: * Use SBE=true [2018-10-26 21:44:48,178 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-26 21:44:48,178 INFO L133 SettingsManager]: * sizeof long=4 [2018-10-26 21:44:48,179 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-26 21:44:48,179 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-10-26 21:44:48,179 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-26 21:44:48,179 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-26 21:44:48,179 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-26 21:44:48,180 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-26 21:44:48,180 INFO L133 SettingsManager]: * sizeof long double=12 [2018-10-26 21:44:48,182 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-26 21:44:48,183 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-26 21:44:48,183 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-26 21:44:48,183 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-26 21:44:48,183 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-26 21:44:48,183 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-26 21:44:48,184 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-26 21:44:48,184 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-26 21:44:48,184 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-26 21:44:48,184 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-26 21:44:48,184 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-26 21:44:48,184 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-26 21:44:48,184 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-26 21:44:48,185 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_13079a31-e541-460c-a288-f64f528eb677/bin-2019/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 22373866aae52af60bd2dae8e24bb583522182de [2018-10-26 21:44:48,235 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-26 21:44:48,250 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-26 21:44:48,253 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-26 21:44:48,254 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-26 21:44:48,255 INFO L276 PluginConnector]: CDTParser initialized [2018-10-26 21:44:48,255 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_13079a31-e541-460c-a288-f64f528eb677/bin-2019/uautomizer/../../sv-benchmarks/c/float-benchs/rlim_invariant_true-unreach-call.c.v+lhb-reducer.c [2018-10-26 21:44:48,306 INFO L218 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_13079a31-e541-460c-a288-f64f528eb677/bin-2019/uautomizer/data/5d46351cf/b12a762e16bc4e3fa82ab822716c56a8/FLAG9c5cc4af9 [2018-10-26 21:44:48,675 INFO L298 CDTParser]: Found 1 translation units. [2018-10-26 21:44:48,675 INFO L158 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_13079a31-e541-460c-a288-f64f528eb677/sv-benchmarks/c/float-benchs/rlim_invariant_true-unreach-call.c.v+lhb-reducer.c [2018-10-26 21:44:48,681 INFO L346 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_13079a31-e541-460c-a288-f64f528eb677/bin-2019/uautomizer/data/5d46351cf/b12a762e16bc4e3fa82ab822716c56a8/FLAG9c5cc4af9 [2018-10-26 21:44:48,695 INFO L354 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_13079a31-e541-460c-a288-f64f528eb677/bin-2019/uautomizer/data/5d46351cf/b12a762e16bc4e3fa82ab822716c56a8 [2018-10-26 21:44:48,702 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-26 21:44:48,704 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-26 21:44:48,704 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-26 21:44:48,705 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-26 21:44:48,707 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-26 21:44:48,707 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 09:44:48" (1/1) ... [2018-10-26 21:44:48,712 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3d260f51 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:44:48, skipping insertion in model container [2018-10-26 21:44:48,712 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 09:44:48" (1/1) ... [2018-10-26 21:44:48,719 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-26 21:44:48,743 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-26 21:44:48,875 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-26 21:44:48,879 INFO L189 MainTranslator]: Completed pre-run [2018-10-26 21:44:48,899 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-26 21:44:48,911 INFO L193 MainTranslator]: Completed translation [2018-10-26 21:44:48,911 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:44:48 WrapperNode [2018-10-26 21:44:48,911 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-26 21:44:48,912 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-26 21:44:48,912 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-26 21:44:48,912 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-26 21:44:48,930 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:44:48" (1/1) ... [2018-10-26 21:44:48,930 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:44:48" (1/1) ... [2018-10-26 21:44:48,936 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:44:48" (1/1) ... [2018-10-26 21:44:48,938 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:44:48" (1/1) ... [2018-10-26 21:44:48,942 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:44:48" (1/1) ... [2018-10-26 21:44:48,946 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:44:48" (1/1) ... [2018-10-26 21:44:48,947 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:44:48" (1/1) ... [2018-10-26 21:44:48,949 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-26 21:44:48,949 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-26 21:44:48,949 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-26 21:44:48,949 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-26 21:44:48,950 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:44:48" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_13079a31-e541-460c-a288-f64f528eb677/bin-2019/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-26 21:44:49,053 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-26 21:44:49,053 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-26 21:44:49,053 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-26 21:44:49,053 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-10-26 21:44:49,053 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2018-10-26 21:44:49,053 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2018-10-26 21:44:49,054 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-10-26 21:44:49,054 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-26 21:44:49,054 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-26 21:44:49,054 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-26 21:44:49,614 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-26 21:44:49,615 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 09:44:49 BoogieIcfgContainer [2018-10-26 21:44:49,615 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-26 21:44:49,616 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-26 21:44:49,616 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-26 21:44:49,619 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-26 21:44:49,619 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.10 09:44:48" (1/3) ... [2018-10-26 21:44:49,620 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@129a7a1a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 09:44:49, skipping insertion in model container [2018-10-26 21:44:49,620 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:44:48" (2/3) ... [2018-10-26 21:44:49,621 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@129a7a1a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 09:44:49, skipping insertion in model container [2018-10-26 21:44:49,621 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 09:44:49" (3/3) ... [2018-10-26 21:44:49,622 INFO L112 eAbstractionObserver]: Analyzing ICFG rlim_invariant_true-unreach-call.c.v+lhb-reducer.c [2018-10-26 21:44:49,633 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-26 21:44:49,641 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2018-10-26 21:44:49,659 INFO L257 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2018-10-26 21:44:49,691 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-10-26 21:44:49,692 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-26 21:44:49,692 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-26 21:44:49,692 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-26 21:44:49,692 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-26 21:44:49,692 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-26 21:44:49,692 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-26 21:44:49,692 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-26 21:44:49,693 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-26 21:44:49,712 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states. [2018-10-26 21:44:49,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-10-26 21:44:49,719 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 21:44:49,719 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 21:44:49,722 INFO L424 AbstractCegarLoop]: === Iteration 1 === [mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 21:44:49,728 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 21:44:49,728 INFO L82 PathProgramCache]: Analyzing trace with hash -1836001814, now seen corresponding path program 1 times [2018-10-26 21:44:49,730 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 21:44:49,731 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 21:44:49,783 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:44:49,784 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 21:44:49,784 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:44:49,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 21:44:50,025 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 21:44:50,027 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 21:44:50,027 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-26 21:44:50,032 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 21:44:50,046 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 21:44:50,047 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-10-26 21:44:50,050 INFO L87 Difference]: Start difference. First operand 47 states. Second operand 4 states. [2018-10-26 21:44:50,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 21:44:50,135 INFO L93 Difference]: Finished difference Result 78 states and 113 transitions. [2018-10-26 21:44:50,136 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-26 21:44:50,137 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 20 [2018-10-26 21:44:50,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 21:44:50,147 INFO L225 Difference]: With dead ends: 78 [2018-10-26 21:44:50,147 INFO L226 Difference]: Without dead ends: 66 [2018-10-26 21:44:50,151 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-10-26 21:44:50,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2018-10-26 21:44:50,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 45. [2018-10-26 21:44:50,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2018-10-26 21:44:50,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 57 transitions. [2018-10-26 21:44:50,195 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 57 transitions. Word has length 20 [2018-10-26 21:44:50,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 21:44:50,197 INFO L481 AbstractCegarLoop]: Abstraction has 45 states and 57 transitions. [2018-10-26 21:44:50,197 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 21:44:50,197 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 57 transitions. [2018-10-26 21:44:50,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-10-26 21:44:50,198 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 21:44:50,198 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 21:44:50,199 INFO L424 AbstractCegarLoop]: === Iteration 2 === [mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 21:44:50,199 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 21:44:50,199 INFO L82 PathProgramCache]: Analyzing trace with hash -1751306001, now seen corresponding path program 1 times [2018-10-26 21:44:50,200 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 21:44:50,200 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 21:44:50,201 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:44:50,201 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 21:44:50,201 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:44:50,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-26 21:44:50,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-26 21:44:50,252 INFO L442 BasicCegarLoop]: Counterexample might be feasible [2018-10-26 21:44:50,288 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.10 09:44:50 BoogieIcfgContainer [2018-10-26 21:44:50,288 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-26 21:44:50,289 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-10-26 21:44:50,289 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-10-26 21:44:50,289 INFO L276 PluginConnector]: Witness Printer initialized [2018-10-26 21:44:50,289 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 09:44:49" (3/4) ... [2018-10-26 21:44:50,295 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-10-26 21:44:50,295 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-10-26 21:44:50,296 INFO L168 Benchmark]: Toolchain (without parser) took 1593.00 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 170.9 MB). Free memory was 960.3 MB in the beginning and 1.1 GB in the end (delta: -151.2 MB). Peak memory consumption was 19.7 MB. Max. memory is 11.5 GB. [2018-10-26 21:44:50,304 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 985.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-10-26 21:44:50,304 INFO L168 Benchmark]: CACSL2BoogieTranslator took 207.28 ms. Allocated memory is still 1.0 GB. Free memory was 960.3 MB in the beginning and 945.8 MB in the end (delta: 14.6 MB). Peak memory consumption was 14.6 MB. Max. memory is 11.5 GB. [2018-10-26 21:44:50,305 INFO L168 Benchmark]: Boogie Preprocessor took 36.62 ms. Allocated memory is still 1.0 GB. Free memory is still 945.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-10-26 21:44:50,305 INFO L168 Benchmark]: RCFGBuilder took 666.01 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 170.9 MB). Free memory was 945.8 MB in the beginning and 1.1 GB in the end (delta: -196.2 MB). Peak memory consumption was 22.7 MB. Max. memory is 11.5 GB. [2018-10-26 21:44:50,306 INFO L168 Benchmark]: TraceAbstraction took 672.48 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 27.1 MB). Peak memory consumption was 27.1 MB. Max. memory is 11.5 GB. [2018-10-26 21:44:50,307 INFO L168 Benchmark]: Witness Printer took 6.57 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. [2018-10-26 21:44:50,313 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 985.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 207.28 ms. Allocated memory is still 1.0 GB. Free memory was 960.3 MB in the beginning and 945.8 MB in the end (delta: 14.6 MB). Peak memory consumption was 14.6 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 36.62 ms. Allocated memory is still 1.0 GB. Free memory is still 945.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 666.01 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 170.9 MB). Free memory was 945.8 MB in the beginning and 1.1 GB in the end (delta: -196.2 MB). Peak memory consumption was 22.7 MB. Max. memory is 11.5 GB. * TraceAbstraction took 672.48 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 27.1 MB). Peak memory consumption was 27.1 MB. Max. memory is 11.5 GB. * Witness Printer took 6.57 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: 62]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 44, overapproximation of someBinaryDOUBLEComparisonOperation at line 49, overapproximation of to_real at line 19, overapproximation of someBinaryArithmeticFLOAToperation at line 46. Possible FailurePath: [L1] int __return_main; [L7] int __tmp_160_0; [L8] int __tmp_160_1; [L9] int __tmp_160_2; [L10] int __return_165; VAL [\old(__return_165)=5, \old(__return_main)=2, \old(__tmp_160_0)=8, \old(__tmp_160_1)=6, \old(__tmp_160_2)=7, __return_165=0, __return_main=0, __tmp_160_0=0, __tmp_160_1=0, __tmp_160_2=0] [L13] float main__X; [L14] float main__Y; [L15] float main__S; [L16] float main__R; [L17] float main__D; [L18] int main__i; [L19] main__Y = 0 [L20] main__i = 0 VAL [\old(__return_165)=0, \old(__tmp_160_0)=0, \old(__tmp_160_1)=0, \old(__tmp_160_2)=0, __return_165=0, __return_main=0, __tmp_160_0=0, __tmp_160_1=0, __tmp_160_2=0, main__i=0] [L21] COND TRUE main__i < 100000 [L23] main__X = __VERIFIER_nondet_float() [L24] main__D = __VERIFIER_nondet_float() [L25] int main____CPAchecker_TMP_0; VAL [\old(__return_165)=0, \old(__tmp_160_0)=0, \old(__tmp_160_1)=0, \old(__tmp_160_2)=0, __return_165=0, __return_main=0, __tmp_160_0=0, __tmp_160_1=0, __tmp_160_2=0, main__D=1, main__i=0, main__X=3] [L26] COND TRUE main__X >= -128.0 VAL [\old(__return_165)=0, \old(__tmp_160_0)=0, \old(__tmp_160_1)=0, \old(__tmp_160_2)=0, __return_165=0, __return_main=0, __tmp_160_0=0, __tmp_160_1=0, __tmp_160_2=0, main__D=1, main__i=0, main__X=3] [L28] COND TRUE main__X <= 128.0 [L30] main____CPAchecker_TMP_0 = 1 VAL [\old(__return_165)=0, \old(__tmp_160_0)=0, \old(__tmp_160_1)=0, \old(__tmp_160_2)=0, __return_165=0, __return_main=0, __tmp_160_0=0, __tmp_160_1=0, __tmp_160_2=0, main____CPAchecker_TMP_0=1, main__D=1, main__i=0, main__X=3] [L31] COND TRUE main____CPAchecker_TMP_0 != 0 [L33] int main____CPAchecker_TMP_1; VAL [\old(__return_165)=0, \old(__tmp_160_0)=0, \old(__tmp_160_1)=0, \old(__tmp_160_2)=0, __return_165=0, __return_main=0, __tmp_160_0=0, __tmp_160_1=0, __tmp_160_2=0, main____CPAchecker_TMP_0=1, main__D=1, main__i=0, main__X=3] [L34] COND TRUE main__D >= 0.0 VAL [\old(__return_165)=0, \old(__tmp_160_0)=0, \old(__tmp_160_1)=0, \old(__tmp_160_2)=0, __return_165=0, __return_main=0, __tmp_160_0=0, __tmp_160_1=0, __tmp_160_2=0, main____CPAchecker_TMP_0=1, main__D=1, main__i=0, main__X=3] [L36] COND TRUE main__D <= 16.0 [L38] main____CPAchecker_TMP_1 = 1 VAL [\old(__return_165)=0, \old(__tmp_160_0)=0, \old(__tmp_160_1)=0, \old(__tmp_160_2)=0, __return_165=0, __return_main=0, __tmp_160_0=0, __tmp_160_1=0, __tmp_160_2=0, main____CPAchecker_TMP_0=1, main____CPAchecker_TMP_1=1, main__D=1, main__i=0, main__X=3] [L39] COND TRUE main____CPAchecker_TMP_1 != 0 [L41] main__S = main__Y [L42] main__Y = main__X [L43] main__R = main__X - main__S VAL [\old(__return_165)=0, \old(__tmp_160_0)=0, \old(__tmp_160_1)=0, \old(__tmp_160_2)=0, __return_165=0, __return_main=0, __tmp_160_0=0, __tmp_160_1=0, __tmp_160_2=0, main____CPAchecker_TMP_0=1, main____CPAchecker_TMP_1=1, main__D=1, main__i=0, main__S=4, main__X=3, main__Y=3] [L44] COND TRUE main__R <= (-main__D) [L46] main__Y = main__S - main__D VAL [\old(__return_165)=0, \old(__tmp_160_0)=0, \old(__tmp_160_1)=0, \old(__tmp_160_2)=0, __return_165=0, __return_main=0, __tmp_160_0=0, __tmp_160_1=0, __tmp_160_2=0, main____CPAchecker_TMP_0=1, main____CPAchecker_TMP_1=1, main__D=1, main__i=0, main__S=4, main__X=3] [L48] int main____CPAchecker_TMP_2; VAL [\old(__return_165)=0, \old(__tmp_160_0)=0, \old(__tmp_160_1)=0, \old(__tmp_160_2)=0, __return_165=0, __return_main=0, __tmp_160_0=0, __tmp_160_1=0, __tmp_160_2=0, main____CPAchecker_TMP_0=1, main____CPAchecker_TMP_1=1, main__D=1, main__i=0, main__S=4, main__X=3] [L49] COND FALSE !(main__Y >= -129.0) VAL [\old(__return_165)=0, \old(__tmp_160_0)=0, \old(__tmp_160_1)=0, \old(__tmp_160_2)=0, __return_165=0, __return_main=0, __tmp_160_0=0, __tmp_160_1=0, __tmp_160_2=0, main____CPAchecker_TMP_0=1, main____CPAchecker_TMP_1=1, main__D=1, main__i=0, main__S=4, main__X=3] [L200] main____CPAchecker_TMP_2 = 0 VAL [\old(__return_165)=0, \old(__tmp_160_0)=0, \old(__tmp_160_1)=0, \old(__tmp_160_2)=0, __return_165=0, __return_main=0, __tmp_160_0=0, __tmp_160_1=0, __tmp_160_2=0, main____CPAchecker_TMP_0=1, main____CPAchecker_TMP_1=1, main____CPAchecker_TMP_2=0, main__D=1, main__i=0, main__S=4, main__X=3] [L56] int __tmp_1; [L57] __tmp_1 = main____CPAchecker_TMP_2 [L58] int __VERIFIER_assert__cond; [L59] __VERIFIER_assert__cond = __tmp_1 VAL [\old(__return_165)=0, \old(__tmp_160_0)=0, \old(__tmp_160_1)=0, \old(__tmp_160_2)=0, __return_165=0, __return_main=0, __tmp_1=0, __tmp_160_0=0, __tmp_160_1=0, __tmp_160_2=0, __VERIFIER_assert__cond=0, main____CPAchecker_TMP_0=1, main____CPAchecker_TMP_1=1, main____CPAchecker_TMP_2=0, main__D=1, main__i=0, main__S=4, main__X=3] [L60] COND TRUE __VERIFIER_assert__cond == 0 VAL [\old(__return_165)=0, \old(__tmp_160_0)=0, \old(__tmp_160_1)=0, \old(__tmp_160_2)=0, __return_165=0, __return_main=0, __tmp_1=0, __tmp_160_0=0, __tmp_160_1=0, __tmp_160_2=0, __VERIFIER_assert__cond=0, main____CPAchecker_TMP_0=1, main____CPAchecker_TMP_1=1, main____CPAchecker_TMP_2=0, main__D=1, main__i=0, main__S=4, main__X=3] [L62] __VERIFIER_error() VAL [\old(__return_165)=0, \old(__tmp_160_0)=0, \old(__tmp_160_1)=0, \old(__tmp_160_2)=0, __return_165=0, __return_main=0, __tmp_1=0, __tmp_160_0=0, __tmp_160_1=0, __tmp_160_2=0, __VERIFIER_assert__cond=0, main____CPAchecker_TMP_0=1, main____CPAchecker_TMP_1=1, main____CPAchecker_TMP_2=0, main__D=1, main__i=0, main__S=4, main__X=3] - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 47 locations, 2 error locations. UNSAFE Result, 0.6s OverallTime, 2 OverallIterations, 1 TraceHistogramMax, 0.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 68 SDtfs, 36 SDslu, 130 SDs, 0 SdLazy, 10 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=47occurred 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: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 21 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 40 NumberOfCodeBlocks, 40 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 19 ConstructedInterpolants, 0 QuantifiedInterpolants, 437 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 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 [2018-10-26 21:44:52,194 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-26 21:44:52,195 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-26 21:44:52,203 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-26 21:44:52,204 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-26 21:44:52,205 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-26 21:44:52,205 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-26 21:44:52,207 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-26 21:44:52,208 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-26 21:44:52,209 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-26 21:44:52,210 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-26 21:44:52,210 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-26 21:44:52,210 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-26 21:44:52,211 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-26 21:44:52,212 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-26 21:44:52,212 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-26 21:44:52,213 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-26 21:44:52,214 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-26 21:44:52,216 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-26 21:44:52,217 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-26 21:44:52,217 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-26 21:44:52,218 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-26 21:44:52,220 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-26 21:44:52,220 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-26 21:44:52,220 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-26 21:44:52,221 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-26 21:44:52,222 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-26 21:44:52,222 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-26 21:44:52,223 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-26 21:44:52,224 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-26 21:44:52,224 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-26 21:44:52,224 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-26 21:44:52,225 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-26 21:44:52,225 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-26 21:44:52,226 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-26 21:44:52,226 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-26 21:44:52,226 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_13079a31-e541-460c-a288-f64f528eb677/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2018-10-26 21:44:52,237 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-26 21:44:52,237 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-26 21:44:52,238 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-26 21:44:52,238 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-26 21:44:52,238 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-26 21:44:52,238 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-26 21:44:52,239 INFO L133 SettingsManager]: * Use SBE=true [2018-10-26 21:44:52,239 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-26 21:44:52,239 INFO L133 SettingsManager]: * sizeof long=4 [2018-10-26 21:44:52,239 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-10-26 21:44:52,239 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-26 21:44:52,240 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-26 21:44:52,240 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-26 21:44:52,240 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-26 21:44:52,240 INFO L133 SettingsManager]: * Use bitvectors instead of ints=true [2018-10-26 21:44:52,240 INFO L133 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2018-10-26 21:44:52,241 INFO L133 SettingsManager]: * sizeof long double=12 [2018-10-26 21:44:52,241 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-26 21:44:52,241 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-26 21:44:52,241 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-26 21:44:52,241 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-26 21:44:52,241 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-26 21:44:52,241 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-26 21:44:52,242 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-26 21:44:52,242 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-26 21:44:52,242 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-26 21:44:52,242 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-26 21:44:52,242 INFO L133 SettingsManager]: * Trace refinement strategy=WOLF [2018-10-26 21:44:52,242 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-26 21:44:52,242 INFO L133 SettingsManager]: * Command for external solver=cvc4nyu --tear-down-incremental --rewrite-divk --print-success --lang smt [2018-10-26 21:44:52,243 INFO L133 SettingsManager]: * Logic for external solver=AUFBV [2018-10-26 21:44:52,243 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_13079a31-e541-460c-a288-f64f528eb677/bin-2019/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 22373866aae52af60bd2dae8e24bb583522182de [2018-10-26 21:44:52,273 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-26 21:44:52,282 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-26 21:44:52,285 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-26 21:44:52,286 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-26 21:44:52,286 INFO L276 PluginConnector]: CDTParser initialized [2018-10-26 21:44:52,287 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_13079a31-e541-460c-a288-f64f528eb677/bin-2019/uautomizer/../../sv-benchmarks/c/float-benchs/rlim_invariant_true-unreach-call.c.v+lhb-reducer.c [2018-10-26 21:44:52,333 INFO L218 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_13079a31-e541-460c-a288-f64f528eb677/bin-2019/uautomizer/data/402b30d81/f2094031aaec4b3998551f28a933a53c/FLAGddd887133 [2018-10-26 21:44:52,716 INFO L298 CDTParser]: Found 1 translation units. [2018-10-26 21:44:52,722 INFO L158 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_13079a31-e541-460c-a288-f64f528eb677/sv-benchmarks/c/float-benchs/rlim_invariant_true-unreach-call.c.v+lhb-reducer.c [2018-10-26 21:44:52,729 INFO L346 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_13079a31-e541-460c-a288-f64f528eb677/bin-2019/uautomizer/data/402b30d81/f2094031aaec4b3998551f28a933a53c/FLAGddd887133 [2018-10-26 21:44:52,746 INFO L354 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_13079a31-e541-460c-a288-f64f528eb677/bin-2019/uautomizer/data/402b30d81/f2094031aaec4b3998551f28a933a53c [2018-10-26 21:44:52,749 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-26 21:44:52,751 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-26 21:44:52,752 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-26 21:44:52,754 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-26 21:44:52,757 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-26 21:44:52,757 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 09:44:52" (1/1) ... [2018-10-26 21:44:52,760 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@38d7d121 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:44:52, skipping insertion in model container [2018-10-26 21:44:52,763 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 09:44:52" (1/1) ... [2018-10-26 21:44:52,771 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-26 21:44:52,799 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-26 21:44:52,951 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-26 21:44:52,956 INFO L189 MainTranslator]: Completed pre-run [2018-10-26 21:44:52,981 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-26 21:44:52,995 INFO L193 MainTranslator]: Completed translation [2018-10-26 21:44:52,995 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:44:52 WrapperNode [2018-10-26 21:44:52,995 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-26 21:44:52,996 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-26 21:44:52,996 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-26 21:44:52,996 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-26 21:44:53,007 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:44:52" (1/1) ... [2018-10-26 21:44:53,007 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:44:52" (1/1) ... [2018-10-26 21:44:53,015 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:44:52" (1/1) ... [2018-10-26 21:44:53,015 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:44:52" (1/1) ... [2018-10-26 21:44:53,020 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:44:52" (1/1) ... [2018-10-26 21:44:53,024 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:44:52" (1/1) ... [2018-10-26 21:44:53,026 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:44:52" (1/1) ... [2018-10-26 21:44:53,028 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-26 21:44:53,029 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-26 21:44:53,029 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-26 21:44:53,029 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-26 21:44:53,030 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:44:52" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_13079a31-e541-460c-a288-f64f528eb677/bin-2019/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-26 21:44:53,078 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-26 21:44:53,078 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-26 21:44:53,078 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-26 21:44:53,078 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-10-26 21:44:53,078 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2018-10-26 21:44:53,078 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2018-10-26 21:44:53,079 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-10-26 21:44:53,079 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-26 21:44:53,079 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-26 21:44:53,079 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-26 21:44:55,398 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-26 21:44:55,399 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 09:44:55 BoogieIcfgContainer [2018-10-26 21:44:55,399 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-26 21:44:55,399 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-26 21:44:55,400 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-26 21:44:55,402 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-26 21:44:55,403 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.10 09:44:52" (1/3) ... [2018-10-26 21:44:55,403 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53b871a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 09:44:55, skipping insertion in model container [2018-10-26 21:44:55,403 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:44:52" (2/3) ... [2018-10-26 21:44:55,404 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53b871a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 09:44:55, skipping insertion in model container [2018-10-26 21:44:55,404 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 09:44:55" (3/3) ... [2018-10-26 21:44:55,405 INFO L112 eAbstractionObserver]: Analyzing ICFG rlim_invariant_true-unreach-call.c.v+lhb-reducer.c [2018-10-26 21:44:55,414 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-26 21:44:55,420 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2018-10-26 21:44:55,434 INFO L257 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2018-10-26 21:44:55,459 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-10-26 21:44:55,460 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-26 21:44:55,460 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-26 21:44:55,460 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-26 21:44:55,460 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-26 21:44:55,461 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-26 21:44:55,461 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-26 21:44:55,461 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-26 21:44:55,461 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-26 21:44:55,476 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states. [2018-10-26 21:44:55,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-10-26 21:44:55,481 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 21:44:55,481 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 21:44:55,483 INFO L424 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 21:44:55,488 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 21:44:55,488 INFO L82 PathProgramCache]: Analyzing trace with hash -1836001814, now seen corresponding path program 1 times [2018-10-26 21:44:55,490 INFO L225 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-10-26 21:44:55,491 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_13079a31-e541-460c-a288-f64f528eb677/bin-2019/uautomizer/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2018-10-26 21:44:55,497 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 21:44:55,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 21:44:55,595 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 21:44:55,634 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 21:44:55,634 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-10-26 21:44:55,645 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 21:44:55,646 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-26 21:44:55,649 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 21:44:55,656 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 21:44:55,656 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-10-26 21:44:55,658 INFO L87 Difference]: Start difference. First operand 47 states. Second operand 4 states. [2018-10-26 21:44:55,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 21:44:55,845 INFO L93 Difference]: Finished difference Result 78 states and 113 transitions. [2018-10-26 21:44:55,846 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-26 21:44:55,847 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 20 [2018-10-26 21:44:55,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 21:44:55,856 INFO L225 Difference]: With dead ends: 78 [2018-10-26 21:44:55,856 INFO L226 Difference]: Without dead ends: 66 [2018-10-26 21:44:55,859 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-10-26 21:44:55,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2018-10-26 21:44:55,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 45. [2018-10-26 21:44:55,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2018-10-26 21:44:55,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 57 transitions. [2018-10-26 21:44:55,891 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 57 transitions. Word has length 20 [2018-10-26 21:44:55,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 21:44:55,892 INFO L481 AbstractCegarLoop]: Abstraction has 45 states and 57 transitions. [2018-10-26 21:44:55,892 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 21:44:55,892 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 57 transitions. [2018-10-26 21:44:55,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-10-26 21:44:55,893 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 21:44:55,893 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 21:44:55,893 INFO L424 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 21:44:55,893 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 21:44:55,893 INFO L82 PathProgramCache]: Analyzing trace with hash -1751306001, now seen corresponding path program 1 times [2018-10-26 21:44:55,894 INFO L225 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-10-26 21:44:55,894 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_13079a31-e541-460c-a288-f64f528eb677/bin-2019/uautomizer/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2018-10-26 21:44:55,898 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2018-10-26 21:44:55,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 21:44:56,000 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 21:44:56,621 WARN L179 SmtUtils]: Spent 449.00 ms on a formula simplification that was a NOOP. DAG size: 11 [2018-10-26 21:44:57,342 WARN L179 SmtUtils]: Spent 416.00 ms on a formula simplification that was a NOOP. DAG size: 11 [2018-10-26 21:44:59,384 WARN L854 $PredicateComparison]: unable to prove that (exists ((main_~main__D~0 (_ FloatingPoint 8 24)) (main_~main__R~0 (_ FloatingPoint 8 24))) (and (fp.leq main_~main__R~0 (fp.neg main_~main__D~0)) (fp.leq ((_ to_fp 11 53) RNE main_~main__D~0) ((_ to_fp 11 53) RNE 16.0)) (= c_main_~main__Y~0 (fp.sub RNE ((_ to_fp 8 24) RNE (_ bv0 32)) main_~main__D~0)))) is different from true [2018-10-26 21:45:00,132 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 21:45:00,132 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-10-26 21:45:00,164 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 21:45:00,164 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-26 21:45:00,165 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-26 21:45:00,166 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-26 21:45:00,166 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=13, Unknown=1, NotChecked=6, Total=30 [2018-10-26 21:45:00,166 INFO L87 Difference]: Start difference. First operand 45 states and 57 transitions. Second operand 6 states. [2018-10-26 21:45:06,120 WARN L179 SmtUtils]: Spent 2.86 s on a formula simplification that was a NOOP. DAG size: 19 [2018-10-26 21:45:09,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 21:45:09,672 INFO L93 Difference]: Finished difference Result 74 states and 95 transitions. [2018-10-26 21:45:09,679 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-26 21:45:09,680 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 20 [2018-10-26 21:45:09,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 21:45:09,681 INFO L225 Difference]: With dead ends: 74 [2018-10-26 21:45:09,681 INFO L226 Difference]: Without dead ends: 49 [2018-10-26 21:45:09,682 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 8.7s TimeCoverageRelationStatistics Valid=13, Invalid=19, Unknown=2, NotChecked=8, Total=42 [2018-10-26 21:45:09,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2018-10-26 21:45:09,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 47. [2018-10-26 21:45:09,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2018-10-26 21:45:09,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 59 transitions. [2018-10-26 21:45:09,691 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 59 transitions. Word has length 20 [2018-10-26 21:45:09,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 21:45:09,691 INFO L481 AbstractCegarLoop]: Abstraction has 47 states and 59 transitions. [2018-10-26 21:45:09,691 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-26 21:45:09,691 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 59 transitions. [2018-10-26 21:45:09,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-10-26 21:45:09,692 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 21:45:09,692 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 21:45:09,692 INFO L424 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 21:45:09,693 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 21:45:09,693 INFO L82 PathProgramCache]: Analyzing trace with hash -1003312673, now seen corresponding path program 1 times [2018-10-26 21:45:09,693 INFO L225 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-10-26 21:45:09,693 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_13079a31-e541-460c-a288-f64f528eb677/bin-2019/uautomizer/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2018-10-26 21:45:09,698 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 21:45:09,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 21:45:09,788 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 21:45:10,320 WARN L179 SmtUtils]: Spent 385.00 ms on a formula simplification that was a NOOP. DAG size: 10 [2018-10-26 21:45:10,822 WARN L179 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 10 [2018-10-26 21:45:11,786 WARN L179 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2018-10-26 21:45:16,133 WARN L179 SmtUtils]: Spent 2.10 s on a formula simplification that was a NOOP. DAG size: 21 [2018-10-26 21:45:16,541 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 21:45:16,541 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-10-26 21:45:16,560 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 21:45:16,560 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-10-26 21:45:16,561 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-26 21:45:16,561 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-26 21:45:16,561 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-10-26 21:45:16,561 INFO L87 Difference]: Start difference. First operand 47 states and 59 transitions. Second operand 7 states. [2018-10-26 21:45:20,837 WARN L179 SmtUtils]: Spent 1.52 s on a formula simplification that was a NOOP. DAG size: 18 [2018-10-26 21:45:27,434 WARN L179 SmtUtils]: Spent 3.21 s on a formula simplification that was a NOOP. DAG size: 23 [2018-10-26 21:45:37,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 21:45:37,987 INFO L93 Difference]: Finished difference Result 87 states and 112 transitions. [2018-10-26 21:45:37,991 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-26 21:45:37,991 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 21 [2018-10-26 21:45:37,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 21:45:37,992 INFO L225 Difference]: With dead ends: 87 [2018-10-26 21:45:37,992 INFO L226 Difference]: Without dead ends: 62 [2018-10-26 21:45:37,993 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 13.6s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-26 21:45:37,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2018-10-26 21:45:37,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 48. [2018-10-26 21:45:37,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2018-10-26 21:45:37,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 60 transitions. [2018-10-26 21:45:37,998 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 60 transitions. Word has length 21 [2018-10-26 21:45:37,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 21:45:37,998 INFO L481 AbstractCegarLoop]: Abstraction has 48 states and 60 transitions. [2018-10-26 21:45:37,998 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-26 21:45:37,998 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 60 transitions. [2018-10-26 21:45:37,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-10-26 21:45:37,999 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 21:45:37,999 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 21:45:37,999 INFO L424 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 21:45:37,999 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 21:45:38,000 INFO L82 PathProgramCache]: Analyzing trace with hash -1090927289, now seen corresponding path program 1 times [2018-10-26 21:45:38,001 INFO L225 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-10-26 21:45:38,002 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_13079a31-e541-460c-a288-f64f528eb677/bin-2019/uautomizer/mathsat Starting monitored process 5 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with mathsat -unsat_core_generation=3 [2018-10-26 21:45:38,006 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 21:45:38,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 21:45:38,122 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 21:45:38,738 WARN L179 SmtUtils]: Spent 350.00 ms on a formula simplification that was a NOOP. DAG size: 10 [2018-10-26 21:45:39,432 WARN L179 SmtUtils]: Spent 291.00 ms on a formula simplification that was a NOOP. DAG size: 10 [2018-10-26 21:45:41,360 WARN L179 SmtUtils]: Spent 500.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2018-10-26 21:45:41,440 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 21:45:41,440 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-10-26 21:45:41,452 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 21:45:41,453 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-26 21:45:41,453 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-26 21:45:41,453 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-26 21:45:41,453 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-26 21:45:41,454 INFO L87 Difference]: Start difference. First operand 48 states and 60 transitions. Second operand 6 states. [2018-10-26 21:45:45,307 WARN L179 SmtUtils]: Spent 1.66 s on a formula simplification that was a NOOP. DAG size: 17 [2018-10-26 21:45:56,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 21:45:56,515 INFO L93 Difference]: Finished difference Result 95 states and 121 transitions. [2018-10-26 21:45:56,523 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-26 21:45:56,523 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 21 [2018-10-26 21:45:56,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 21:45:56,524 INFO L225 Difference]: With dead ends: 95 [2018-10-26 21:45:56,524 INFO L226 Difference]: Without dead ends: 70 [2018-10-26 21:45:56,525 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 5.6s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-10-26 21:45:56,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2018-10-26 21:45:56,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 50. [2018-10-26 21:45:56,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2018-10-26 21:45:56,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 62 transitions. [2018-10-26 21:45:56,535 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 62 transitions. Word has length 21 [2018-10-26 21:45:56,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 21:45:56,535 INFO L481 AbstractCegarLoop]: Abstraction has 50 states and 62 transitions. [2018-10-26 21:45:56,536 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-26 21:45:56,536 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 62 transitions. [2018-10-26 21:45:56,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-10-26 21:45:56,537 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 21:45:56,538 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 21:45:56,538 INFO L424 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 21:45:56,538 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 21:45:56,538 INFO L82 PathProgramCache]: Analyzing trace with hash 684080073, now seen corresponding path program 1 times [2018-10-26 21:45:56,539 INFO L225 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-10-26 21:45:56,539 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_13079a31-e541-460c-a288-f64f528eb677/bin-2019/uautomizer/mathsat Starting monitored process 6 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with mathsat -unsat_core_generation=3 [2018-10-26 21:45:56,551 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 21:45:56,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 21:45:56,610 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 21:45:56,950 WARN L179 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 7 [2018-10-26 21:45:57,681 WARN L179 SmtUtils]: Spent 477.00 ms on a formula simplification that was a NOOP. DAG size: 9 [2018-10-26 21:45:58,763 WARN L179 SmtUtils]: Spent 289.00 ms on a formula simplification that was a NOOP. DAG size: 9 [2018-10-26 21:45:58,778 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 21:45:58,779 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-10-26 21:45:58,786 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 21:45:58,787 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-26 21:45:58,787 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-26 21:45:58,787 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-26 21:45:58,787 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-10-26 21:45:58,788 INFO L87 Difference]: Start difference. First operand 50 states and 62 transitions. Second operand 5 states. [2018-10-26 21:46:02,033 WARN L179 SmtUtils]: Spent 1.98 s on a formula simplification that was a NOOP. DAG size: 12 [2018-10-26 21:46:05,032 WARN L179 SmtUtils]: Spent 2.15 s on a formula simplification that was a NOOP. DAG size: 13 [2018-10-26 21:46:19,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 21:46:19,292 INFO L93 Difference]: Finished difference Result 141 states and 184 transitions. [2018-10-26 21:46:19,302 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-26 21:46:19,302 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 21 [2018-10-26 21:46:19,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 21:46:19,303 INFO L225 Difference]: With dead ends: 141 [2018-10-26 21:46:19,304 INFO L226 Difference]: Without dead ends: 116 [2018-10-26 21:46:19,304 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 7.5s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2018-10-26 21:46:19,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2018-10-26 21:46:19,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 58. [2018-10-26 21:46:19,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2018-10-26 21:46:19,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 73 transitions. [2018-10-26 21:46:19,315 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 73 transitions. Word has length 21 [2018-10-26 21:46:19,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 21:46:19,315 INFO L481 AbstractCegarLoop]: Abstraction has 58 states and 73 transitions. [2018-10-26 21:46:19,315 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-26 21:46:19,315 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 73 transitions. [2018-10-26 21:46:19,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-10-26 21:46:19,317 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 21:46:19,317 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 21:46:19,317 INFO L424 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 21:46:19,317 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 21:46:19,318 INFO L82 PathProgramCache]: Analyzing trace with hash -2006409081, now seen corresponding path program 1 times [2018-10-26 21:46:19,318 INFO L225 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-10-26 21:46:19,318 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_13079a31-e541-460c-a288-f64f528eb677/bin-2019/uautomizer/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 [2018-10-26 21:46:19,328 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 21:46:19,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 21:46:19,408 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 21:46:19,915 WARN L179 SmtUtils]: Spent 340.00 ms on a formula simplification that was a NOOP. DAG size: 10 [2018-10-26 21:46:20,504 WARN L179 SmtUtils]: Spent 310.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-10-26 21:46:21,330 WARN L179 SmtUtils]: Spent 541.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-10-26 21:46:22,684 WARN L179 SmtUtils]: Spent 359.00 ms on a formula simplification that was a NOOP. DAG size: 17 [2018-10-26 21:46:24,593 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 21:46:24,594 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-10-26 21:46:24,602 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 21:46:24,602 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-10-26 21:46:24,602 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-26 21:46:24,602 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-26 21:46:24,603 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-10-26 21:46:24,603 INFO L87 Difference]: Start difference. First operand 58 states and 73 transitions. Second operand 7 states. [2018-10-26 21:46:28,707 WARN L179 SmtUtils]: Spent 1.50 s on a formula simplification that was a NOOP. DAG size: 20 [2018-10-26 21:46:38,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 21:46:38,240 INFO L93 Difference]: Finished difference Result 107 states and 140 transitions. [2018-10-26 21:46:38,247 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-26 21:46:38,247 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 22 [2018-10-26 21:46:38,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 21:46:38,249 INFO L225 Difference]: With dead ends: 107 [2018-10-26 21:46:38,250 INFO L226 Difference]: Without dead ends: 72 [2018-10-26 21:46:38,250 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 7.1s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2018-10-26 21:46:38,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2018-10-26 21:46:38,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 50. [2018-10-26 21:46:38,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2018-10-26 21:46:38,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 64 transitions. [2018-10-26 21:46:38,261 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 64 transitions. Word has length 22 [2018-10-26 21:46:38,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 21:46:38,262 INFO L481 AbstractCegarLoop]: Abstraction has 50 states and 64 transitions. [2018-10-26 21:46:38,262 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-26 21:46:38,262 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 64 transitions. [2018-10-26 21:46:38,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2018-10-26 21:46:38,263 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 21:46:38,263 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 21:46:38,263 INFO L424 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 21:46:38,264 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 21:46:38,266 INFO L82 PathProgramCache]: Analyzing trace with hash 362136190, now seen corresponding path program 1 times [2018-10-26 21:46:38,266 INFO L225 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-10-26 21:46:38,266 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_13079a31-e541-460c-a288-f64f528eb677/bin-2019/uautomizer/mathsat Starting monitored process 8 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with mathsat -unsat_core_generation=3 [2018-10-26 21:46:38,273 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 21:46:38,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 21:46:38,424 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 21:46:38,438 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 21:46:38,438 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-10-26 21:46:38,449 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 21:46:38,449 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-26 21:46:38,450 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-26 21:46:38,450 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-26 21:46:38,450 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-26 21:46:38,450 INFO L87 Difference]: Start difference. First operand 50 states and 64 transitions. Second operand 3 states. [2018-10-26 21:46:38,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 21:46:38,506 INFO L93 Difference]: Finished difference Result 74 states and 96 transitions. [2018-10-26 21:46:38,507 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-26 21:46:38,507 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 34 [2018-10-26 21:46:38,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 21:46:38,508 INFO L225 Difference]: With dead ends: 74 [2018-10-26 21:46:38,508 INFO L226 Difference]: Without dead ends: 42 [2018-10-26 21:46:38,508 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-26 21:46:38,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2018-10-26 21:46:38,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2018-10-26 21:46:38,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2018-10-26 21:46:38,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 50 transitions. [2018-10-26 21:46:38,520 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 50 transitions. Word has length 34 [2018-10-26 21:46:38,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 21:46:38,521 INFO L481 AbstractCegarLoop]: Abstraction has 42 states and 50 transitions. [2018-10-26 21:46:38,521 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-26 21:46:38,521 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 50 transitions. [2018-10-26 21:46:38,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2018-10-26 21:46:38,522 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 21:46:38,522 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 21:46:38,522 INFO L424 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 21:46:38,523 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 21:46:38,523 INFO L82 PathProgramCache]: Analyzing trace with hash -1525173959, now seen corresponding path program 1 times [2018-10-26 21:46:38,523 INFO L225 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-10-26 21:46:38,523 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_13079a31-e541-460c-a288-f64f528eb677/bin-2019/uautomizer/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 [2018-10-26 21:46:38,531 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 21:46:38,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 21:46:38,699 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 21:46:38,717 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 21:46:38,718 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-10-26 21:46:38,729 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 21:46:38,730 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-26 21:46:38,730 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-26 21:46:38,730 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-26 21:46:38,730 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-26 21:46:38,731 INFO L87 Difference]: Start difference. First operand 42 states and 50 transitions. Second operand 3 states. [2018-10-26 21:46:38,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 21:46:38,930 INFO L93 Difference]: Finished difference Result 65 states and 79 transitions. [2018-10-26 21:46:38,931 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-26 21:46:38,931 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 34 [2018-10-26 21:46:38,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 21:46:38,931 INFO L225 Difference]: With dead ends: 65 [2018-10-26 21:46:38,931 INFO L226 Difference]: Without dead ends: 41 [2018-10-26 21:46:38,932 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-26 21:46:38,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2018-10-26 21:46:38,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2018-10-26 21:46:38,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2018-10-26 21:46:38,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 47 transitions. [2018-10-26 21:46:38,939 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 47 transitions. Word has length 34 [2018-10-26 21:46:38,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 21:46:38,939 INFO L481 AbstractCegarLoop]: Abstraction has 41 states and 47 transitions. [2018-10-26 21:46:38,939 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-26 21:46:38,940 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 47 transitions. [2018-10-26 21:46:38,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2018-10-26 21:46:38,942 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 21:46:38,942 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 21:46:38,942 INFO L424 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 21:46:38,942 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 21:46:38,942 INFO L82 PathProgramCache]: Analyzing trace with hash 15701630, now seen corresponding path program 1 times [2018-10-26 21:46:38,943 INFO L225 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-10-26 21:46:38,943 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_13079a31-e541-460c-a288-f64f528eb677/bin-2019/uautomizer/mathsat Starting monitored process 10 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with mathsat -unsat_core_generation=3 [2018-10-26 21:46:38,948 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 21:46:39,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 21:46:39,090 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 21:46:39,113 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 21:46:39,114 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-10-26 21:46:39,123 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 21:46:39,123 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-26 21:46:39,123 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 21:46:39,123 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 21:46:39,124 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-10-26 21:46:39,124 INFO L87 Difference]: Start difference. First operand 41 states and 47 transitions. Second operand 4 states. [2018-10-26 21:46:39,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 21:46:39,350 INFO L93 Difference]: Finished difference Result 64 states and 74 transitions. [2018-10-26 21:46:39,350 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-26 21:46:39,351 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 34 [2018-10-26 21:46:39,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 21:46:39,351 INFO L225 Difference]: With dead ends: 64 [2018-10-26 21:46:39,351 INFO L226 Difference]: Without dead ends: 62 [2018-10-26 21:46:39,352 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-10-26 21:46:39,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2018-10-26 21:46:39,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 43. [2018-10-26 21:46:39,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2018-10-26 21:46:39,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 49 transitions. [2018-10-26 21:46:39,359 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 49 transitions. Word has length 34 [2018-10-26 21:46:39,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 21:46:39,360 INFO L481 AbstractCegarLoop]: Abstraction has 43 states and 49 transitions. [2018-10-26 21:46:39,360 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 21:46:39,360 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 49 transitions. [2018-10-26 21:46:39,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2018-10-26 21:46:39,360 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 21:46:39,361 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 21:46:39,361 INFO L424 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 21:46:39,361 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 21:46:39,361 INFO L82 PathProgramCache]: Analyzing trace with hash 31758979, now seen corresponding path program 1 times [2018-10-26 21:46:39,361 INFO L225 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-10-26 21:46:39,362 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_13079a31-e541-460c-a288-f64f528eb677/bin-2019/uautomizer/mathsat Starting monitored process 11 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with mathsat -unsat_core_generation=3 [2018-10-26 21:46:39,367 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 21:46:39,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 21:46:39,550 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 21:46:40,024 WARN L179 SmtUtils]: Spent 284.00 ms on a formula simplification that was a NOOP. DAG size: 10 [2018-10-26 21:46:40,673 WARN L179 SmtUtils]: Spent 418.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-10-26 21:46:41,699 WARN L179 SmtUtils]: Spent 544.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-10-26 21:46:43,099 WARN L179 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 18 [2018-10-26 21:46:50,536 WARN L179 SmtUtils]: Spent 1.06 s on a formula simplification that was a NOOP. DAG size: 22 [2018-10-26 21:46:54,218 WARN L179 SmtUtils]: Spent 1.62 s on a formula simplification that was a NOOP. DAG size: 23 [2018-10-26 21:46:57,631 WARN L179 SmtUtils]: Spent 1.78 s on a formula simplification that was a NOOP. DAG size: 23 [2018-10-26 21:47:00,306 WARN L854 $PredicateComparison]: unable to prove that (exists ((v_prenex_1 (_ FloatingPoint 8 24)) (v_prenex_2 (_ FloatingPoint 8 24)) (main_~main__D~0 (_ FloatingPoint 8 24)) (main_~main__R~0 (_ FloatingPoint 8 24))) (let ((.cse1 ((_ to_fp 11 53) RNE 16.0)) (.cse2 ((_ to_fp 11 53) RNE main_~main__D~0)) (.cse0 ((_ to_fp 11 53) RNE v_prenex_1))) (and (fp.leq .cse0 .cse1) (fp.leq main_~main__R~0 (fp.neg main_~main__D~0)) (fp.leq .cse2 .cse1) (fp.geq .cse2 (_ +zero 11 53)) (fp.leq v_prenex_2 (fp.neg v_prenex_1)) (fp.geq .cse0 (_ +zero 11 53)) (= (fp.sub RNE (fp.sub RNE ((_ to_fp 8 24) RNE (_ bv0 32)) v_prenex_1) main_~main__D~0) c_main_~main__Y~0)))) is different from true [2018-10-26 21:47:06,365 WARN L832 $PredicateComparison]: unable to prove that (exists ((v_prenex_1 (_ FloatingPoint 8 24)) (v_prenex_2 (_ FloatingPoint 8 24)) (main_~main__D~0 (_ FloatingPoint 8 24)) (main_~main__R~0 (_ FloatingPoint 8 24))) (let ((.cse1 ((_ to_fp 11 53) RNE 16.0)) (.cse2 ((_ to_fp 11 53) RNE main_~main__D~0)) (.cse0 ((_ to_fp 11 53) RNE v_prenex_1))) (and (fp.leq .cse0 .cse1) (fp.leq main_~main__R~0 (fp.neg main_~main__D~0)) (fp.leq .cse2 .cse1) (fp.geq .cse2 (_ +zero 11 53)) (fp.leq v_prenex_2 (fp.neg v_prenex_1)) (fp.geq .cse0 (_ +zero 11 53)) (not (fp.geq ((_ to_fp 11 53) RNE (fp.sub RNE (fp.sub RNE ((_ to_fp 8 24) RNE (_ bv0 32)) v_prenex_1) main_~main__D~0)) (fp.neg ((_ to_fp 11 53) RNE 129.0))))))) is different from false [2018-10-26 21:47:08,390 WARN L854 $PredicateComparison]: unable to prove that (exists ((v_prenex_1 (_ FloatingPoint 8 24)) (v_prenex_2 (_ FloatingPoint 8 24)) (main_~main__D~0 (_ FloatingPoint 8 24)) (main_~main__R~0 (_ FloatingPoint 8 24))) (let ((.cse1 ((_ to_fp 11 53) RNE 16.0)) (.cse2 ((_ to_fp 11 53) RNE main_~main__D~0)) (.cse0 ((_ to_fp 11 53) RNE v_prenex_1))) (and (fp.leq .cse0 .cse1) (fp.leq main_~main__R~0 (fp.neg main_~main__D~0)) (fp.leq .cse2 .cse1) (fp.geq .cse2 (_ +zero 11 53)) (fp.leq v_prenex_2 (fp.neg v_prenex_1)) (fp.geq .cse0 (_ +zero 11 53)) (not (fp.geq ((_ to_fp 11 53) RNE (fp.sub RNE (fp.sub RNE ((_ to_fp 8 24) RNE (_ bv0 32)) v_prenex_1) main_~main__D~0)) (fp.neg ((_ to_fp 11 53) RNE 129.0))))))) is different from true [2018-10-26 21:47:20,535 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 21:47:20,535 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-10-26 21:47:20,549 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 21:47:20,549 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2018-10-26 21:47:20,550 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-10-26 21:47:20,550 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-10-26 21:47:20,550 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=61, Unknown=3, NotChecked=34, Total=132 [2018-10-26 21:47:20,550 INFO L87 Difference]: Start difference. First operand 43 states and 49 transitions. Second operand 12 states. [2018-10-26 21:47:25,330 WARN L179 SmtUtils]: Spent 1.76 s on a formula simplification that was a NOOP. DAG size: 25 [2018-10-26 21:47:38,043 WARN L832 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 11 53) RNE c_main_~main__D~0))) (and (fp.leq .cse0 ((_ to_fp 11 53) RNE 16.0)) (exists ((v_prenex_1 (_ FloatingPoint 8 24)) (main_~main__R~0 (_ FloatingPoint 8 24))) (let ((.cse1 ((_ to_fp 11 53) RNE v_prenex_1))) (and (fp.leq .cse1 ((_ to_fp 11 53) RNE 16.0)) (fp.geq .cse1 (_ +zero 11 53)) (= c_main_~main__S~0 (fp.sub RNE ((_ to_fp 8 24) RNE (_ bv0 32)) v_prenex_1)) (fp.leq main_~main__R~0 (fp.neg v_prenex_1))))) (exists ((v_prenex_1 (_ FloatingPoint 8 24)) (v_prenex_2 (_ FloatingPoint 8 24)) (main_~main__D~0 (_ FloatingPoint 8 24)) (main_~main__R~0 (_ FloatingPoint 8 24))) (let ((.cse3 ((_ to_fp 11 53) RNE 16.0)) (.cse4 ((_ to_fp 11 53) RNE main_~main__D~0)) (.cse2 ((_ to_fp 11 53) RNE v_prenex_1))) (and (fp.leq .cse2 .cse3) (fp.leq main_~main__R~0 (fp.neg main_~main__D~0)) (fp.leq .cse4 .cse3) (fp.geq .cse4 (_ +zero 11 53)) (fp.leq v_prenex_2 (fp.neg v_prenex_1)) (fp.geq .cse2 (_ +zero 11 53)) (= (fp.sub RNE (fp.sub RNE ((_ to_fp 8 24) RNE (_ bv0 32)) v_prenex_1) main_~main__D~0) c_main_~main__Y~0)))) (fp.geq .cse0 (_ +zero 11 53)))) is different from false [2018-10-26 21:47:46,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 21:47:46,247 INFO L93 Difference]: Finished difference Result 82 states and 93 transitions. [2018-10-26 21:47:46,266 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-10-26 21:47:46,266 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 34 [2018-10-26 21:47:46,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 21:47:46,267 INFO L225 Difference]: With dead ends: 82 [2018-10-26 21:47:46,267 INFO L226 Difference]: Without dead ends: 80 [2018-10-26 21:47:46,268 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 21 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 29.3s TimeCoverageRelationStatistics Valid=43, Invalid=75, Unknown=4, NotChecked=60, Total=182 [2018-10-26 21:47:46,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2018-10-26 21:47:46,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 60. [2018-10-26 21:47:46,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2018-10-26 21:47:46,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 68 transitions. [2018-10-26 21:47:46,284 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 68 transitions. Word has length 34 [2018-10-26 21:47:46,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 21:47:46,285 INFO L481 AbstractCegarLoop]: Abstraction has 60 states and 68 transitions. [2018-10-26 21:47:46,285 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-10-26 21:47:46,285 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 68 transitions. [2018-10-26 21:47:46,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2018-10-26 21:47:46,286 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 21:47:46,286 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 21:47:46,286 INFO L424 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 21:47:46,286 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 21:47:46,286 INFO L82 PathProgramCache]: Analyzing trace with hash 4618079, now seen corresponding path program 1 times [2018-10-26 21:47:46,287 INFO L225 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-10-26 21:47:46,287 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_13079a31-e541-460c-a288-f64f528eb677/bin-2019/uautomizer/mathsat Starting monitored process 12 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2018-10-26 21:47:46,306 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 12 with mathsat -unsat_core_generation=3 [2018-10-26 21:47:46,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 21:47:46,519 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 21:47:47,430 WARN L179 SmtUtils]: Spent 470.00 ms on a formula simplification that was a NOOP. DAG size: 9 [2018-10-26 21:47:50,290 WARN L179 SmtUtils]: Spent 1.77 s on a formula simplification that was a NOOP. DAG size: 15 [2018-10-26 21:47:54,923 WARN L179 SmtUtils]: Spent 2.67 s on a formula simplification that was a NOOP. DAG size: 16 [2018-10-26 21:48:02,365 WARN L179 SmtUtils]: Spent 4.12 s on a formula simplification that was a NOOP. DAG size: 20 [2018-10-26 21:48:11,229 WARN L179 SmtUtils]: Spent 4.96 s on a formula simplification that was a NOOP. DAG size: 23 [2018-10-26 21:48:30,227 WARN L179 SmtUtils]: Spent 8.04 s on a formula simplification that was a NOOP. DAG size: 28 [2018-10-26 21:48:58,342 WARN L179 SmtUtils]: Spent 13.82 s on a formula simplification that was a NOOP. DAG size: 31 [2018-10-26 21:49:00,375 WARN L832 $PredicateComparison]: unable to prove that (exists ((main_~main__S~0 (_ FloatingPoint 8 24)) (main_~main__D~0 (_ FloatingPoint 8 24)) (main_~main__X~0 (_ FloatingPoint 8 24))) (let ((.cse2 (fp.sub RNE main_~main__X~0 main_~main__S~0)) (.cse3 ((_ to_fp 11 53) RNE main_~main__D~0)) (.cse0 ((_ to_fp 11 53) RNE main_~main__X~0)) (.cse1 ((_ to_fp 11 53) RNE 128.0)) (.cse4 ((_ to_fp 11 53) RNE main_~main__S~0)) (.cse5 ((_ to_fp 11 53) RNE 129.0))) (and (fp.leq .cse0 .cse1) (not (fp.leq .cse2 (fp.neg main_~main__D~0))) (fp.leq .cse3 ((_ to_fp 11 53) RNE 16.0)) (= c_main_~main__Y~0 (fp.add RNE main_~main__S~0 main_~main__D~0)) (fp.leq .cse4 .cse5) (fp.geq .cse2 main_~main__D~0) (fp.geq .cse3 (_ +zero 11 53)) (fp.geq .cse0 (fp.neg .cse1)) (fp.geq .cse4 (fp.neg .cse5))))) is different from false [2018-10-26 21:49:02,398 WARN L854 $PredicateComparison]: unable to prove that (exists ((main_~main__S~0 (_ FloatingPoint 8 24)) (main_~main__D~0 (_ FloatingPoint 8 24)) (main_~main__X~0 (_ FloatingPoint 8 24))) (let ((.cse2 (fp.sub RNE main_~main__X~0 main_~main__S~0)) (.cse3 ((_ to_fp 11 53) RNE main_~main__D~0)) (.cse0 ((_ to_fp 11 53) RNE main_~main__X~0)) (.cse1 ((_ to_fp 11 53) RNE 128.0)) (.cse4 ((_ to_fp 11 53) RNE main_~main__S~0)) (.cse5 ((_ to_fp 11 53) RNE 129.0))) (and (fp.leq .cse0 .cse1) (not (fp.leq .cse2 (fp.neg main_~main__D~0))) (fp.leq .cse3 ((_ to_fp 11 53) RNE 16.0)) (= c_main_~main__Y~0 (fp.add RNE main_~main__S~0 main_~main__D~0)) (fp.leq .cse4 .cse5) (fp.geq .cse2 main_~main__D~0) (fp.geq .cse3 (_ +zero 11 53)) (fp.geq .cse0 (fp.neg .cse1)) (fp.geq .cse4 (fp.neg .cse5))))) is different from true [2018-10-26 21:49:08,498 WARN L832 $PredicateComparison]: unable to prove that (exists ((main_~main__S~0 (_ FloatingPoint 8 24)) (main_~main__D~0 (_ FloatingPoint 8 24)) (main_~main__X~0 (_ FloatingPoint 8 24))) (let ((.cse5 ((_ to_fp 11 53) RNE 129.0))) (let ((.cse2 (fp.sub RNE main_~main__X~0 main_~main__S~0)) (.cse3 ((_ to_fp 11 53) RNE main_~main__D~0)) (.cse0 ((_ to_fp 11 53) RNE main_~main__X~0)) (.cse1 ((_ to_fp 11 53) RNE 128.0)) (.cse4 ((_ to_fp 11 53) RNE main_~main__S~0)) (.cse6 (fp.neg .cse5))) (and (fp.leq .cse0 .cse1) (not (fp.leq .cse2 (fp.neg main_~main__D~0))) (fp.leq .cse3 ((_ to_fp 11 53) RNE 16.0)) (fp.leq .cse4 .cse5) (fp.geq .cse2 main_~main__D~0) (fp.geq .cse3 (_ +zero 11 53)) (fp.geq .cse0 (fp.neg .cse1)) (not (fp.geq ((_ to_fp 11 53) RNE (fp.add RNE main_~main__S~0 main_~main__D~0)) .cse6)) (fp.geq .cse4 .cse6))))) is different from false [2018-10-26 21:49:10,525 WARN L854 $PredicateComparison]: unable to prove that (exists ((main_~main__S~0 (_ FloatingPoint 8 24)) (main_~main__D~0 (_ FloatingPoint 8 24)) (main_~main__X~0 (_ FloatingPoint 8 24))) (let ((.cse5 ((_ to_fp 11 53) RNE 129.0))) (let ((.cse2 (fp.sub RNE main_~main__X~0 main_~main__S~0)) (.cse3 ((_ to_fp 11 53) RNE main_~main__D~0)) (.cse0 ((_ to_fp 11 53) RNE main_~main__X~0)) (.cse1 ((_ to_fp 11 53) RNE 128.0)) (.cse4 ((_ to_fp 11 53) RNE main_~main__S~0)) (.cse6 (fp.neg .cse5))) (and (fp.leq .cse0 .cse1) (not (fp.leq .cse2 (fp.neg main_~main__D~0))) (fp.leq .cse3 ((_ to_fp 11 53) RNE 16.0)) (fp.leq .cse4 .cse5) (fp.geq .cse2 main_~main__D~0) (fp.geq .cse3 (_ +zero 11 53)) (fp.geq .cse0 (fp.neg .cse1)) (not (fp.geq ((_ to_fp 11 53) RNE (fp.add RNE main_~main__S~0 main_~main__D~0)) .cse6)) (fp.geq .cse4 .cse6))))) is different from true [2018-10-26 21:49:22,699 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 21:49:22,699 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-10-26 21:49:22,708 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 21:49:22,708 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2018-10-26 21:49:22,708 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-10-26 21:49:22,709 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-10-26 21:49:22,709 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=53, Unknown=8, NotChecked=34, Total=132 [2018-10-26 21:49:22,709 INFO L87 Difference]: Start difference. First operand 60 states and 68 transitions. Second operand 12 states. [2018-10-26 21:49:26,168 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 [2018-10-26 21:49:26,171 INFO L168 Benchmark]: Toolchain (without parser) took 273420.79 ms. Allocated memory was 1.0 GB in the beginning and 1.3 GB in the end (delta: 221.2 MB). Free memory was 949.2 MB in the beginning and 1.2 GB in the end (delta: -219.4 MB). Peak memory consumption was 1.9 MB. Max. memory is 11.5 GB. [2018-10-26 21:49:26,172 INFO L168 Benchmark]: CDTParser took 0.14 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. [2018-10-26 21:49:26,172 INFO L168 Benchmark]: CACSL2BoogieTranslator took 243.45 ms. Allocated memory is still 1.0 GB. Free memory was 949.2 MB in the beginning and 933.1 MB in the end (delta: 16.1 MB). Peak memory consumption was 16.1 MB. Max. memory is 11.5 GB. [2018-10-26 21:49:26,177 INFO L168 Benchmark]: Boogie Preprocessor took 32.31 ms. Allocated memory is still 1.0 GB. Free memory is still 933.1 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-10-26 21:49:26,177 INFO L168 Benchmark]: RCFGBuilder took 2369.93 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 176.2 MB). Free memory was 933.1 MB in the beginning and 1.1 GB in the end (delta: -214.0 MB). Peak memory consumption was 28.0 MB. Max. memory is 11.5 GB. [2018-10-26 21:49:26,178 INFO L168 Benchmark]: TraceAbstraction took 270771.22 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 45.1 MB). Free memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: -21.4 MB). Peak memory consumption was 23.7 MB. Max. memory is 11.5 GB. [2018-10-26 21:49:26,180 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14 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 243.45 ms. Allocated memory is still 1.0 GB. Free memory was 949.2 MB in the beginning and 933.1 MB in the end (delta: 16.1 MB). Peak memory consumption was 16.1 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 32.31 ms. Allocated memory is still 1.0 GB. Free memory is still 933.1 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 2369.93 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 176.2 MB). Free memory was 933.1 MB in the beginning and 1.1 GB in the end (delta: -214.0 MB). Peak memory consumption was 28.0 MB. Max. memory is 11.5 GB. * TraceAbstraction took 270771.22 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 45.1 MB). Free memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: -21.4 MB). Peak memory consumption was 23.7 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...