./Ultimate.py --spec ../../sv-benchmarks/c/ReachSafety.prp --file ../../sv-benchmarks/c/loop-lit/jm2006_true-unreach-call_true-termination.c.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5842f4b8 Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_8e70d3fe-a6cc-480e-919a-c682bbb4838f/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_8e70d3fe-a6cc-480e-919a-c682bbb4838f/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_8e70d3fe-a6cc-480e-919a-c682bbb4838f/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_8e70d3fe-a6cc-480e-919a-c682bbb4838f/bin-2019/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/loop-lit/jm2006_true-unreach-call_true-termination.c.i -s /tmp/vcloud-vcloud-master/worker/working_dir_8e70d3fe-a6cc-480e-919a-c682bbb4838f/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_8e70d3fe-a6cc-480e-919a-c682bbb4838f/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 37aa7dd2e80998c2241e95adb0e8008dc0337fe8 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-5842f4b [2018-11-18 12:13:39,685 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-18 12:13:39,686 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-18 12:13:39,694 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-18 12:13:39,695 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-18 12:13:39,696 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-18 12:13:39,697 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-18 12:13:39,698 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-18 12:13:39,699 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-18 12:13:39,700 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-18 12:13:39,701 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-18 12:13:39,701 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-18 12:13:39,702 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-18 12:13:39,703 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-18 12:13:39,704 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-18 12:13:39,704 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-18 12:13:39,705 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-18 12:13:39,707 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-18 12:13:39,708 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-18 12:13:39,709 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-18 12:13:39,711 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-18 12:13:39,712 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-18 12:13:39,713 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-18 12:13:39,714 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-18 12:13:39,714 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-18 12:13:39,715 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-18 12:13:39,716 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-18 12:13:39,716 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-18 12:13:39,717 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-18 12:13:39,718 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-18 12:13:39,718 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-18 12:13:39,718 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-18 12:13:39,718 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-18 12:13:39,718 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-18 12:13:39,719 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-18 12:13:39,719 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-18 12:13:39,720 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_8e70d3fe-a6cc-480e-919a-c682bbb4838f/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2018-11-18 12:13:39,731 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-18 12:13:39,731 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-18 12:13:39,731 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-18 12:13:39,732 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-11-18 12:13:39,732 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-18 12:13:39,732 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-18 12:13:39,732 INFO L133 SettingsManager]: * Use SBE=true [2018-11-18 12:13:39,733 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-18 12:13:39,733 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-18 12:13:39,733 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-18 12:13:39,733 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-18 12:13:39,733 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-18 12:13:39,733 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-18 12:13:39,733 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-18 12:13:39,733 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-18 12:13:39,733 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-18 12:13:39,734 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-18 12:13:39,735 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-18 12:13:39,735 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-18 12:13:39,735 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-18 12:13:39,735 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-18 12:13:39,736 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-18 12:13:39,736 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-18 12:13:39,736 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-18 12:13:39,736 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-18 12:13:39,736 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-18 12:13:39,736 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-18 12:13:39,736 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-18 12:13:39,736 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-18 12:13:39,736 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-18 12:13:39,736 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_8e70d3fe-a6cc-480e-919a-c682bbb4838f/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 -> 37aa7dd2e80998c2241e95adb0e8008dc0337fe8 [2018-11-18 12:13:39,760 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-18 12:13:39,769 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-18 12:13:39,771 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-18 12:13:39,772 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-18 12:13:39,772 INFO L276 PluginConnector]: CDTParser initialized [2018-11-18 12:13:39,773 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_8e70d3fe-a6cc-480e-919a-c682bbb4838f/bin-2019/uautomizer/../../sv-benchmarks/c/loop-lit/jm2006_true-unreach-call_true-termination.c.i [2018-11-18 12:13:39,812 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_8e70d3fe-a6cc-480e-919a-c682bbb4838f/bin-2019/uautomizer/data/b9563db51/e8dbe041a7c141c0abbfdb1f06295fa1/FLAG63f1e8967 [2018-11-18 12:13:40,144 INFO L307 CDTParser]: Found 1 translation units. [2018-11-18 12:13:40,145 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_8e70d3fe-a6cc-480e-919a-c682bbb4838f/sv-benchmarks/c/loop-lit/jm2006_true-unreach-call_true-termination.c.i [2018-11-18 12:13:40,151 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_8e70d3fe-a6cc-480e-919a-c682bbb4838f/bin-2019/uautomizer/data/b9563db51/e8dbe041a7c141c0abbfdb1f06295fa1/FLAG63f1e8967 [2018-11-18 12:13:40,573 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_8e70d3fe-a6cc-480e-919a-c682bbb4838f/bin-2019/uautomizer/data/b9563db51/e8dbe041a7c141c0abbfdb1f06295fa1 [2018-11-18 12:13:40,575 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-18 12:13:40,576 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-18 12:13:40,577 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-18 12:13:40,577 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-18 12:13:40,580 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-18 12:13:40,580 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 12:13:40" (1/1) ... [2018-11-18 12:13:40,582 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1e67cf6f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 12:13:40, skipping insertion in model container [2018-11-18 12:13:40,582 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 12:13:40" (1/1) ... [2018-11-18 12:13:40,591 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-18 12:13:40,605 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-18 12:13:40,718 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 12:13:40,721 INFO L191 MainTranslator]: Completed pre-run [2018-11-18 12:13:40,732 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 12:13:40,742 INFO L195 MainTranslator]: Completed translation [2018-11-18 12:13:40,742 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 12:13:40 WrapperNode [2018-11-18 12:13:40,742 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-18 12:13:40,742 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-18 12:13:40,743 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-18 12:13:40,743 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-18 12:13:40,755 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 12:13:40" (1/1) ... [2018-11-18 12:13:40,755 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 12:13:40" (1/1) ... [2018-11-18 12:13:40,760 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 12:13:40" (1/1) ... [2018-11-18 12:13:40,760 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 12:13:40" (1/1) ... [2018-11-18 12:13:40,763 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 12:13:40" (1/1) ... [2018-11-18 12:13:40,767 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 12:13:40" (1/1) ... [2018-11-18 12:13:40,768 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 12:13:40" (1/1) ... [2018-11-18 12:13:40,769 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-18 12:13:40,770 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-18 12:13:40,770 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-18 12:13:40,770 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-18 12:13:40,771 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 12:13:40" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_8e70d3fe-a6cc-480e-919a-c682bbb4838f/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 [2018-11-18 12:13:40,860 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-18 12:13:40,860 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-18 12:13:40,860 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-11-18 12:13:40,860 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-18 12:13:40,860 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-11-18 12:13:40,860 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2018-11-18 12:13:40,861 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-11-18 12:13:40,861 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-11-18 12:13:40,861 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-18 12:13:40,861 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-18 12:13:40,861 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-18 12:13:40,990 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-18 12:13:40,991 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 12:13:40 BoogieIcfgContainer [2018-11-18 12:13:40,991 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-18 12:13:40,991 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-18 12:13:40,991 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-18 12:13:40,994 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-18 12:13:40,994 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 12:13:40" (1/3) ... [2018-11-18 12:13:40,995 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4457e473 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 12:13:40, skipping insertion in model container [2018-11-18 12:13:40,995 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 12:13:40" (2/3) ... [2018-11-18 12:13:40,995 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4457e473 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 12:13:40, skipping insertion in model container [2018-11-18 12:13:40,996 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 12:13:40" (3/3) ... [2018-11-18 12:13:40,997 INFO L112 eAbstractionObserver]: Analyzing ICFG jm2006_true-unreach-call_true-termination.c.i [2018-11-18 12:13:41,007 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-18 12:13:41,015 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-18 12:13:41,027 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-18 12:13:41,049 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-18 12:13:41,049 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-18 12:13:41,050 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-18 12:13:41,050 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-18 12:13:41,050 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-18 12:13:41,050 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-18 12:13:41,050 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-18 12:13:41,051 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-18 12:13:41,051 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-18 12:13:41,068 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states. [2018-11-18 12:13:41,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-11-18 12:13:41,074 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 12:13:41,075 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 12:13:41,077 INFO L423 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 12:13:41,082 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 12:13:41,083 INFO L82 PathProgramCache]: Analyzing trace with hash 536890419, now seen corresponding path program 1 times [2018-11-18 12:13:41,085 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 12:13:41,085 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 12:13:41,129 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 12:13:41,130 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 12:13:41,130 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 12:13:41,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 12:13:41,189 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 12:13:41,191 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 12:13:41,191 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-18 12:13:41,195 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-11-18 12:13:41,209 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-11-18 12:13:41,209 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-18 12:13:41,211 INFO L87 Difference]: Start difference. First operand 21 states. Second operand 2 states. [2018-11-18 12:13:41,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 12:13:41,229 INFO L93 Difference]: Finished difference Result 34 states and 40 transitions. [2018-11-18 12:13:41,229 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-11-18 12:13:41,231 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 12 [2018-11-18 12:13:41,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 12:13:41,239 INFO L225 Difference]: With dead ends: 34 [2018-11-18 12:13:41,239 INFO L226 Difference]: Without dead ends: 14 [2018-11-18 12:13:41,242 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-18 12:13:41,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2018-11-18 12:13:41,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2018-11-18 12:13:41,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2018-11-18 12:13:41,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2018-11-18 12:13:41,271 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 12 [2018-11-18 12:13:41,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 12:13:41,272 INFO L480 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2018-11-18 12:13:41,272 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-11-18 12:13:41,272 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2018-11-18 12:13:41,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-11-18 12:13:41,272 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 12:13:41,273 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 12:13:41,273 INFO L423 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 12:13:41,273 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 12:13:41,273 INFO L82 PathProgramCache]: Analyzing trace with hash 704732235, now seen corresponding path program 1 times [2018-11-18 12:13:41,273 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 12:13:41,274 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 12:13:41,274 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 12:13:41,274 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 12:13:41,274 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 12:13:41,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 12:13:41,544 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 12:13:41,545 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 12:13:41,545 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-11-18 12:13:41,546 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-18 12:13:41,546 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-18 12:13:41,547 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-11-18 12:13:41,547 INFO L87 Difference]: Start difference. First operand 14 states and 14 transitions. Second operand 7 states. [2018-11-18 12:13:41,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 12:13:41,656 INFO L93 Difference]: Finished difference Result 22 states and 22 transitions. [2018-11-18 12:13:41,656 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-18 12:13:41,656 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 13 [2018-11-18 12:13:41,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 12:13:41,657 INFO L225 Difference]: With dead ends: 22 [2018-11-18 12:13:41,657 INFO L226 Difference]: Without dead ends: 16 [2018-11-18 12:13:41,658 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2018-11-18 12:13:41,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2018-11-18 12:13:41,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2018-11-18 12:13:41,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2018-11-18 12:13:41,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2018-11-18 12:13:41,662 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 13 [2018-11-18 12:13:41,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 12:13:41,662 INFO L480 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2018-11-18 12:13:41,662 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-18 12:13:41,662 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2018-11-18 12:13:41,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-11-18 12:13:41,663 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 12:13:41,663 INFO L375 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 12:13:41,663 INFO L423 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 12:13:41,663 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 12:13:41,663 INFO L82 PathProgramCache]: Analyzing trace with hash -796629243, now seen corresponding path program 1 times [2018-11-18 12:13:41,664 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 12:13:41,664 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 12:13:41,664 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 12:13:41,665 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 12:13:41,665 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 12:13:41,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 12:13:41,809 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 12:13:41,809 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 12:13:41,809 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_8e70d3fe-a6cc-480e-919a-c682bbb4838f/bin-2019/uautomizer/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 12:13:41,820 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 12:13:41,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 12:13:41,834 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 12:13:41,932 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 12:13:41,957 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 12:13:41,957 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 10 [2018-11-18 12:13:41,958 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-11-18 12:13:41,958 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-11-18 12:13:41,958 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2018-11-18 12:13:41,959 INFO L87 Difference]: Start difference. First operand 16 states and 16 transitions. Second operand 10 states. [2018-11-18 12:13:42,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 12:13:42,037 INFO L93 Difference]: Finished difference Result 24 states and 24 transitions. [2018-11-18 12:13:42,037 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-18 12:13:42,038 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 15 [2018-11-18 12:13:42,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 12:13:42,038 INFO L225 Difference]: With dead ends: 24 [2018-11-18 12:13:42,038 INFO L226 Difference]: Without dead ends: 18 [2018-11-18 12:13:42,039 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 12 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2018-11-18 12:13:42,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2018-11-18 12:13:42,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2018-11-18 12:13:42,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2018-11-18 12:13:42,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 18 transitions. [2018-11-18 12:13:42,043 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 18 transitions. Word has length 15 [2018-11-18 12:13:42,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 12:13:42,043 INFO L480 AbstractCegarLoop]: Abstraction has 18 states and 18 transitions. [2018-11-18 12:13:42,043 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-11-18 12:13:42,043 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 18 transitions. [2018-11-18 12:13:42,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-11-18 12:13:42,044 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 12:13:42,044 INFO L375 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 12:13:42,044 INFO L423 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 12:13:42,044 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 12:13:42,044 INFO L82 PathProgramCache]: Analyzing trace with hash -495998145, now seen corresponding path program 2 times [2018-11-18 12:13:42,045 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 12:13:42,045 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 12:13:42,045 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 12:13:42,045 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 12:13:42,046 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 12:13:42,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 12:13:42,163 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 12:13:42,163 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 12:13:42,163 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_8e70d3fe-a6cc-480e-919a-c682bbb4838f/bin-2019/uautomizer/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 12:13:42,179 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-11-18 12:13:42,186 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-18 12:13:42,186 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-18 12:13:42,188 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 12:13:42,238 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 12:13:42,254 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 12:13:42,254 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 11 [2018-11-18 12:13:42,254 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-11-18 12:13:42,254 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-11-18 12:13:42,255 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2018-11-18 12:13:42,255 INFO L87 Difference]: Start difference. First operand 18 states and 18 transitions. Second operand 11 states. [2018-11-18 12:13:42,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 12:13:42,397 INFO L93 Difference]: Finished difference Result 30 states and 31 transitions. [2018-11-18 12:13:42,397 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-11-18 12:13:42,397 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 17 [2018-11-18 12:13:42,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 12:13:42,398 INFO L225 Difference]: With dead ends: 30 [2018-11-18 12:13:42,400 INFO L226 Difference]: Without dead ends: 22 [2018-11-18 12:13:42,400 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 13 SyntacticMatches, 3 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=50, Invalid=160, Unknown=0, NotChecked=0, Total=210 [2018-11-18 12:13:42,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2018-11-18 12:13:42,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2018-11-18 12:13:42,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2018-11-18 12:13:42,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 22 transitions. [2018-11-18 12:13:42,405 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 22 transitions. Word has length 17 [2018-11-18 12:13:42,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 12:13:42,405 INFO L480 AbstractCegarLoop]: Abstraction has 22 states and 22 transitions. [2018-11-18 12:13:42,405 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-11-18 12:13:42,405 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 22 transitions. [2018-11-18 12:13:42,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-11-18 12:13:42,406 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 12:13:42,406 INFO L375 BasicCegarLoop]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 12:13:42,406 INFO L423 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 12:13:42,406 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 12:13:42,407 INFO L82 PathProgramCache]: Analyzing trace with hash 209018931, now seen corresponding path program 3 times [2018-11-18 12:13:42,407 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 12:13:42,407 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 12:13:42,407 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 12:13:42,408 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 12:13:42,408 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 12:13:42,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 12:13:42,524 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-11-18 12:13:42,525 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 12:13:42,525 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_8e70d3fe-a6cc-480e-919a-c682bbb4838f/bin-2019/uautomizer/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 12:13:42,531 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-11-18 12:13:42,553 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2018-11-18 12:13:42,553 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-18 12:13:42,555 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 12:13:42,645 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 12:13:42,662 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 12:13:42,663 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11] total 14 [2018-11-18 12:13:42,663 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-11-18 12:13:42,663 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-11-18 12:13:42,663 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2018-11-18 12:13:42,664 INFO L87 Difference]: Start difference. First operand 22 states and 22 transitions. Second operand 14 states. [2018-11-18 12:13:42,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 12:13:42,781 INFO L93 Difference]: Finished difference Result 26 states and 27 transitions. [2018-11-18 12:13:42,781 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-11-18 12:13:42,781 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 21 [2018-11-18 12:13:42,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 12:13:42,782 INFO L225 Difference]: With dead ends: 26 [2018-11-18 12:13:42,782 INFO L226 Difference]: Without dead ends: 0 [2018-11-18 12:13:42,782 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 15 SyntacticMatches, 4 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=74, Invalid=268, Unknown=0, NotChecked=0, Total=342 [2018-11-18 12:13:42,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-11-18 12:13:42,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-11-18 12:13:42,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-11-18 12:13:42,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-11-18 12:13:42,783 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 21 [2018-11-18 12:13:42,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 12:13:42,783 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-18 12:13:42,783 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-11-18 12:13:42,783 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-11-18 12:13:42,783 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-18 12:13:42,787 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-11-18 12:13:42,838 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2018-11-18 12:13:42,839 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-11-18 12:13:42,839 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-11-18 12:13:42,839 INFO L428 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-11-18 12:13:42,839 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-11-18 12:13:42,839 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-11-18 12:13:42,839 INFO L428 ceAbstractionStarter]: At program point mainENTRY(lines 10 25) the Hoare annotation is: true [2018-11-18 12:13:42,839 INFO L425 ceAbstractionStarter]: For program point mainEXIT(lines 10 25) no Hoare annotation was computed. [2018-11-18 12:13:42,839 INFO L421 ceAbstractionStarter]: At program point L22(line 22) the Hoare annotation is: (and (<= 0 main_~y~0) (<= main_~y~0 0)) [2018-11-18 12:13:42,839 INFO L425 ceAbstractionStarter]: For program point L21(lines 21 23) no Hoare annotation was computed. [2018-11-18 12:13:42,840 INFO L425 ceAbstractionStarter]: For program point L17-1(lines 17 20) no Hoare annotation was computed. [2018-11-18 12:13:42,840 INFO L425 ceAbstractionStarter]: For program point L14(line 14) no Hoare annotation was computed. [2018-11-18 12:13:42,840 INFO L421 ceAbstractionStarter]: At program point L17-3(lines 17 20) the Hoare annotation is: (let ((.cse1 (+ main_~x~0 main_~j~0)) (.cse0 (+ main_~y~0 main_~i~0))) (and (<= .cse0 .cse1) (<= .cse1 .cse0))) [2018-11-18 12:13:42,840 INFO L425 ceAbstractionStarter]: For program point L17-4(lines 10 25) no Hoare annotation was computed. [2018-11-18 12:13:42,840 INFO L425 ceAbstractionStarter]: For program point mainFINAL(lines 10 25) no Hoare annotation was computed. [2018-11-18 12:13:42,840 INFO L428 ceAbstractionStarter]: At program point __VERIFIER_assertENTRY(lines 3 8) the Hoare annotation is: true [2018-11-18 12:13:42,840 INFO L425 ceAbstractionStarter]: For program point __VERIFIER_assertEXIT(lines 3 8) no Hoare annotation was computed. [2018-11-18 12:13:42,840 INFO L425 ceAbstractionStarter]: For program point L5(line 5) no Hoare annotation was computed. [2018-11-18 12:13:42,841 INFO L425 ceAbstractionStarter]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2018-11-18 12:13:42,841 INFO L425 ceAbstractionStarter]: For program point L4(lines 4 6) no Hoare annotation was computed. [2018-11-18 12:13:42,841 INFO L425 ceAbstractionStarter]: For program point L4-2(lines 3 8) no Hoare annotation was computed. [2018-11-18 12:13:42,849 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.11 12:13:42 BoogieIcfgContainer [2018-11-18 12:13:42,850 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-18 12:13:42,850 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-18 12:13:42,850 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-18 12:13:42,850 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-18 12:13:42,851 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 12:13:40" (3/4) ... [2018-11-18 12:13:42,854 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-11-18 12:13:42,859 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-11-18 12:13:42,859 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-11-18 12:13:42,859 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2018-11-18 12:13:42,862 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2018-11-18 12:13:42,862 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2018-11-18 12:13:42,863 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-11-18 12:13:42,898 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_8e70d3fe-a6cc-480e-919a-c682bbb4838f/bin-2019/uautomizer/witness.graphml [2018-11-18 12:13:42,898 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-18 12:13:42,899 INFO L168 Benchmark]: Toolchain (without parser) took 2322.74 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 134.2 MB). Free memory was 958.1 MB in the beginning and 875.4 MB in the end (delta: 82.7 MB). Peak memory consumption was 216.9 MB. Max. memory is 11.5 GB. [2018-11-18 12:13:42,900 INFO L168 Benchmark]: CDTParser took 0.11 ms. Allocated memory is still 1.0 GB. Free memory is still 985.4 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 12:13:42,900 INFO L168 Benchmark]: CACSL2BoogieTranslator took 165.27 ms. Allocated memory is still 1.0 GB. Free memory was 958.1 MB in the beginning and 947.3 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-11-18 12:13:42,900 INFO L168 Benchmark]: Boogie Preprocessor took 26.96 ms. Allocated memory is still 1.0 GB. Free memory was 947.3 MB in the beginning and 944.6 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-11-18 12:13:42,901 INFO L168 Benchmark]: RCFGBuilder took 221.12 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 134.2 MB). Free memory was 944.6 MB in the beginning and 1.1 GB in the end (delta: -168.7 MB). Peak memory consumption was 19.4 MB. Max. memory is 11.5 GB. [2018-11-18 12:13:42,901 INFO L168 Benchmark]: TraceAbstraction took 1858.33 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 878.8 MB in the end (delta: 234.5 MB). Peak memory consumption was 234.5 MB. Max. memory is 11.5 GB. [2018-11-18 12:13:42,901 INFO L168 Benchmark]: Witness Printer took 47.81 ms. Allocated memory is still 1.2 GB. Free memory was 878.8 MB in the beginning and 875.4 MB in the end (delta: 3.4 MB). Peak memory consumption was 3.4 MB. Max. memory is 11.5 GB. [2018-11-18 12:13:42,903 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11 ms. Allocated memory is still 1.0 GB. Free memory is still 985.4 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 165.27 ms. Allocated memory is still 1.0 GB. Free memory was 958.1 MB in the beginning and 947.3 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 26.96 ms. Allocated memory is still 1.0 GB. Free memory was 947.3 MB in the beginning and 944.6 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 221.12 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 134.2 MB). Free memory was 944.6 MB in the beginning and 1.1 GB in the end (delta: -168.7 MB). Peak memory consumption was 19.4 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1858.33 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 878.8 MB in the end (delta: 234.5 MB). Peak memory consumption was 234.5 MB. Max. memory is 11.5 GB. * Witness Printer took 47.81 ms. Allocated memory is still 1.2 GB. Free memory was 878.8 MB in the beginning and 875.4 MB in the end (delta: 3.4 MB). Peak memory consumption was 3.4 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 5]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: y + i <= x + j && x + j <= y + i - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 21 locations, 1 error locations. SAFE Result, 1.8s OverallTime, 5 OverallIterations, 5 TraceHistogramMax, 0.5s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 68 SDtfs, 29 SDslu, 250 SDs, 0 SdLazy, 210 SolverSat, 4 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 103 GetRequests, 44 SyntacticMatches, 10 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 0.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=22occurred in iteration=4, 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, 5 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 13 PreInvPairs, 24 NumberOfFragments, 27 HoareAnnotationTreeSize, 13 FomulaSimplifications, 104 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 142 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 131 NumberOfCodeBlocks, 131 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 123 ConstructedInterpolants, 0 QuantifiedInterpolants, 16087 SizeOfPredicates, 15 NumberOfNonLiveVariables, 156 ConjunctsInSsa, 72 ConjunctsInUnsatCore, 8 InterpolantComputations, 2 PerfectInterpolantSequences, 2/56 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...