./Ultimate.py --spec ../../sv-benchmarks/c/ReachSafety.prp --file ../../sv-benchmarks/c/loop-acceleration/underapprox_true-unreach-call1_true-termination.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_820ada87-c73a-4b63-8f47-4b66f45320db/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_820ada87-c73a-4b63-8f47-4b66f45320db/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_820ada87-c73a-4b63-8f47-4b66f45320db/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_820ada87-c73a-4b63-8f47-4b66f45320db/bin-2019/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/loop-acceleration/underapprox_true-unreach-call1_true-termination.i -s /tmp/vcloud-vcloud-master/worker/working_dir_820ada87-c73a-4b63-8f47-4b66f45320db/bin-2019/uautomizer/config/svcomp-Reach-32bit-PetriAutomizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_820ada87-c73a-4b63-8f47-4b66f45320db/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 6a0edfd90480f917557019c272eaa2ec2221428a ..................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 08:35:06,567 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-18 08:35:06,569 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-18 08:35:06,577 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-18 08:35:06,577 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-18 08:35:06,578 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-18 08:35:06,579 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-18 08:35:06,580 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-18 08:35:06,582 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-18 08:35:06,582 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-18 08:35:06,583 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-18 08:35:06,583 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-18 08:35:06,584 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-18 08:35:06,585 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-18 08:35:06,585 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-18 08:35:06,586 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-18 08:35:06,587 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-18 08:35:06,588 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-18 08:35:06,589 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-18 08:35:06,591 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-18 08:35:06,591 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-18 08:35:06,592 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-18 08:35:06,594 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-18 08:35:06,594 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-18 08:35:06,594 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-18 08:35:06,595 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-18 08:35:06,596 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-18 08:35:06,596 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-18 08:35:06,597 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-18 08:35:06,598 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-18 08:35:06,598 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-18 08:35:06,598 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-18 08:35:06,598 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-18 08:35:06,599 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-18 08:35:06,599 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-18 08:35:06,600 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-18 08:35:06,600 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_820ada87-c73a-4b63-8f47-4b66f45320db/bin-2019/uautomizer/config/svcomp-Reach-32bit-PetriAutomizer_Default.epf [2018-11-18 08:35:06,610 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-18 08:35:06,611 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-18 08:35:06,611 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-18 08:35:06,611 INFO L133 SettingsManager]: * Process only entry and re-entry procedures=false [2018-11-18 08:35:06,612 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-18 08:35:06,612 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-18 08:35:06,612 INFO L133 SettingsManager]: * Use SBE=true [2018-11-18 08:35:06,612 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-18 08:35:06,613 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-18 08:35:06,613 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-18 08:35:06,613 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-18 08:35:06,613 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-18 08:35:06,613 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-18 08:35:06,613 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-18 08:35:06,613 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-18 08:35:06,613 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-18 08:35:06,614 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-18 08:35:06,614 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-18 08:35:06,614 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-18 08:35:06,614 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-18 08:35:06,614 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-18 08:35:06,614 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-18 08:35:06,615 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-18 08:35:06,615 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-18 08:35:06,615 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-18 08:35:06,615 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-18 08:35:06,615 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-18 08:35:06,615 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-18 08:35:06,615 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-18 08:35:06,616 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-18 08:35:06,616 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_820ada87-c73a-4b63-8f47-4b66f45320db/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 -> 6a0edfd90480f917557019c272eaa2ec2221428a [2018-11-18 08:35:06,639 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-18 08:35:06,649 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-18 08:35:06,651 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-18 08:35:06,653 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-18 08:35:06,653 INFO L276 PluginConnector]: CDTParser initialized [2018-11-18 08:35:06,653 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_820ada87-c73a-4b63-8f47-4b66f45320db/bin-2019/uautomizer/../../sv-benchmarks/c/loop-acceleration/underapprox_true-unreach-call1_true-termination.i [2018-11-18 08:35:06,704 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_820ada87-c73a-4b63-8f47-4b66f45320db/bin-2019/uautomizer/data/70c3bdc43/b0db6abb60354925b62ab4d580a35b27/FLAG9255f7653 [2018-11-18 08:35:07,093 INFO L307 CDTParser]: Found 1 translation units. [2018-11-18 08:35:07,094 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_820ada87-c73a-4b63-8f47-4b66f45320db/sv-benchmarks/c/loop-acceleration/underapprox_true-unreach-call1_true-termination.i [2018-11-18 08:35:07,098 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_820ada87-c73a-4b63-8f47-4b66f45320db/bin-2019/uautomizer/data/70c3bdc43/b0db6abb60354925b62ab4d580a35b27/FLAG9255f7653 [2018-11-18 08:35:07,108 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_820ada87-c73a-4b63-8f47-4b66f45320db/bin-2019/uautomizer/data/70c3bdc43/b0db6abb60354925b62ab4d580a35b27 [2018-11-18 08:35:07,110 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-18 08:35:07,111 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-18 08:35:07,112 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-18 08:35:07,112 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-18 08:35:07,114 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-18 08:35:07,115 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:35:07" (1/1) ... [2018-11-18 08:35:07,116 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@24248849 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:35:07, skipping insertion in model container [2018-11-18 08:35:07,116 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:35:07" (1/1) ... [2018-11-18 08:35:07,122 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-18 08:35:07,133 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-18 08:35:07,235 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 08:35:07,237 INFO L191 MainTranslator]: Completed pre-run [2018-11-18 08:35:07,246 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 08:35:07,253 INFO L195 MainTranslator]: Completed translation [2018-11-18 08:35:07,253 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:35:07 WrapperNode [2018-11-18 08:35:07,254 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-18 08:35:07,254 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-18 08:35:07,254 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-18 08:35:07,254 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-18 08:35:07,265 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:35:07" (1/1) ... [2018-11-18 08:35:07,265 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:35:07" (1/1) ... [2018-11-18 08:35:07,269 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:35:07" (1/1) ... [2018-11-18 08:35:07,269 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:35:07" (1/1) ... [2018-11-18 08:35:07,272 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:35:07" (1/1) ... [2018-11-18 08:35:07,276 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:35:07" (1/1) ... [2018-11-18 08:35:07,276 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:35:07" (1/1) ... [2018-11-18 08:35:07,277 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-18 08:35:07,278 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-18 08:35:07,278 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-18 08:35:07,278 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-18 08:35:07,279 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:35:07" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_820ada87-c73a-4b63-8f47-4b66f45320db/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 08:35:07,354 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-18 08:35:07,354 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-18 08:35:07,354 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-11-18 08:35:07,354 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-18 08:35:07,354 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-11-18 08:35:07,354 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-11-18 08:35:07,354 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-18 08:35:07,354 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-18 08:35:07,355 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-18 08:35:07,453 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-18 08:35:07,454 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:35:07 BoogieIcfgContainer [2018-11-18 08:35:07,454 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-18 08:35:07,454 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-18 08:35:07,454 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-18 08:35:07,456 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-18 08:35:07,456 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 08:35:07" (1/3) ... [2018-11-18 08:35:07,457 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@387b4a72 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 08:35:07, skipping insertion in model container [2018-11-18 08:35:07,457 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:35:07" (2/3) ... [2018-11-18 08:35:07,457 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@387b4a72 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 08:35:07, skipping insertion in model container [2018-11-18 08:35:07,458 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:35:07" (3/3) ... [2018-11-18 08:35:07,459 INFO L112 eAbstractionObserver]: Analyzing ICFG underapprox_true-unreach-call1_true-termination.i [2018-11-18 08:35:07,466 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-18 08:35:07,471 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-18 08:35:07,482 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-18 08:35:07,508 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-18 08:35:07,509 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-18 08:35:07,509 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-18 08:35:07,509 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-18 08:35:07,509 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-18 08:35:07,509 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-18 08:35:07,509 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-18 08:35:07,510 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-18 08:35:07,510 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-18 08:35:07,524 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states. [2018-11-18 08:35:07,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-11-18 08:35:07,529 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 08:35:07,530 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 08:35:07,532 INFO L423 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 08:35:07,536 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 08:35:07,537 INFO L82 PathProgramCache]: Analyzing trace with hash -10373566, now seen corresponding path program 1 times [2018-11-18 08:35:07,538 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 08:35:07,539 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 08:35:07,580 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 08:35:07,580 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 08:35:07,580 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 08:35:07,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 08:35:07,624 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 08:35:07,626 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 08:35:07,626 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-18 08:35:07,630 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-11-18 08:35:07,640 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-11-18 08:35:07,641 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-18 08:35:07,643 INFO L87 Difference]: Start difference. First operand 18 states. Second operand 2 states. [2018-11-18 08:35:07,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 08:35:07,659 INFO L93 Difference]: Finished difference Result 29 states and 32 transitions. [2018-11-18 08:35:07,659 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-11-18 08:35:07,660 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2018-11-18 08:35:07,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 08:35:07,667 INFO L225 Difference]: With dead ends: 29 [2018-11-18 08:35:07,667 INFO L226 Difference]: Without dead ends: 12 [2018-11-18 08:35:07,669 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 08:35:07,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2018-11-18 08:35:07,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2018-11-18 08:35:07,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2018-11-18 08:35:07,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2018-11-18 08:35:07,698 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 10 [2018-11-18 08:35:07,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 08:35:07,699 INFO L480 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2018-11-18 08:35:07,699 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-11-18 08:35:07,699 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2018-11-18 08:35:07,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-11-18 08:35:07,699 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 08:35:07,700 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 08:35:07,700 INFO L423 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 08:35:07,700 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 08:35:07,700 INFO L82 PathProgramCache]: Analyzing trace with hash -571410792, now seen corresponding path program 1 times [2018-11-18 08:35:07,700 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 08:35:07,700 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 08:35:07,701 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 08:35:07,701 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 08:35:07,701 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 08:35:07,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 08:35:07,785 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 08:35:07,785 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 08:35:07,785 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-18 08:35:07,786 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-18 08:35:07,786 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-18 08:35:07,787 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-18 08:35:07,787 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand 3 states. [2018-11-18 08:35:07,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 08:35:07,818 INFO L93 Difference]: Finished difference Result 19 states and 19 transitions. [2018-11-18 08:35:07,819 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-18 08:35:07,819 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2018-11-18 08:35:07,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 08:35:07,819 INFO L225 Difference]: With dead ends: 19 [2018-11-18 08:35:07,820 INFO L226 Difference]: Without dead ends: 14 [2018-11-18 08:35:07,820 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-18 08:35:07,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2018-11-18 08:35:07,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2018-11-18 08:35:07,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2018-11-18 08:35:07,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2018-11-18 08:35:07,823 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 11 [2018-11-18 08:35:07,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 08:35:07,823 INFO L480 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2018-11-18 08:35:07,823 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-18 08:35:07,824 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2018-11-18 08:35:07,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-11-18 08:35:07,824 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 08:35:07,824 INFO L375 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 08:35:07,824 INFO L423 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 08:35:07,826 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 08:35:07,826 INFO L82 PathProgramCache]: Analyzing trace with hash 1625028318, now seen corresponding path program 1 times [2018-11-18 08:35:07,826 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 08:35:07,826 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 08:35:07,827 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 08:35:07,827 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 08:35:07,827 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 08:35:07,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 08:35:07,887 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 08:35:07,888 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 08:35:07,888 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_820ada87-c73a-4b63-8f47-4b66f45320db/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 08:35:07,898 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 08:35:07,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 08:35:07,912 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 08:35:07,935 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 08:35:07,950 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 08:35:07,950 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2018-11-18 08:35:07,951 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-18 08:35:07,951 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-18 08:35:07,951 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-11-18 08:35:07,951 INFO L87 Difference]: Start difference. First operand 14 states and 14 transitions. Second operand 5 states. [2018-11-18 08:35:07,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 08:35:07,969 INFO L93 Difference]: Finished difference Result 21 states and 21 transitions. [2018-11-18 08:35:07,969 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-18 08:35:07,969 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2018-11-18 08:35:07,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 08:35:07,969 INFO L225 Difference]: With dead ends: 21 [2018-11-18 08:35:07,969 INFO L226 Difference]: Without dead ends: 16 [2018-11-18 08:35:07,970 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-11-18 08:35:07,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2018-11-18 08:35:07,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2018-11-18 08:35:07,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2018-11-18 08:35:07,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2018-11-18 08:35:07,972 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 13 [2018-11-18 08:35:07,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 08:35:07,972 INFO L480 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2018-11-18 08:35:07,972 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-18 08:35:07,972 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2018-11-18 08:35:07,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-11-18 08:35:07,973 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 08:35:07,973 INFO L375 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 08:35:07,973 INFO L423 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 08:35:07,973 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 08:35:07,973 INFO L82 PathProgramCache]: Analyzing trace with hash -720896604, now seen corresponding path program 2 times [2018-11-18 08:35:07,974 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 08:35:07,974 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 08:35:07,974 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 08:35:07,975 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 08:35:07,975 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 08:35:07,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 08:35:08,066 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 08:35:08,066 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 08:35:08,066 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_820ada87-c73a-4b63-8f47-4b66f45320db/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 08:35:08,074 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-11-18 08:35:08,086 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-18 08:35:08,087 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-18 08:35:08,088 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 08:35:08,123 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 08:35:08,138 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 08:35:08,138 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2018-11-18 08:35:08,138 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-18 08:35:08,139 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-18 08:35:08,139 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-18 08:35:08,139 INFO L87 Difference]: Start difference. First operand 16 states and 16 transitions. Second operand 6 states. [2018-11-18 08:35:08,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 08:35:08,158 INFO L93 Difference]: Finished difference Result 23 states and 23 transitions. [2018-11-18 08:35:08,158 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-18 08:35:08,158 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2018-11-18 08:35:08,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 08:35:08,159 INFO L225 Difference]: With dead ends: 23 [2018-11-18 08:35:08,159 INFO L226 Difference]: Without dead ends: 18 [2018-11-18 08:35:08,159 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-18 08:35:08,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2018-11-18 08:35:08,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2018-11-18 08:35:08,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2018-11-18 08:35:08,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 18 transitions. [2018-11-18 08:35:08,162 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 18 transitions. Word has length 15 [2018-11-18 08:35:08,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 08:35:08,163 INFO L480 AbstractCegarLoop]: Abstraction has 18 states and 18 transitions. [2018-11-18 08:35:08,163 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-18 08:35:08,163 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 18 transitions. [2018-11-18 08:35:08,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-11-18 08:35:08,163 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 08:35:08,163 INFO L375 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 08:35:08,164 INFO L423 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 08:35:08,164 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 08:35:08,164 INFO L82 PathProgramCache]: Analyzing trace with hash -296916246, now seen corresponding path program 3 times [2018-11-18 08:35:08,164 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 08:35:08,164 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 08:35:08,165 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 08:35:08,165 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 08:35:08,165 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 08:35:08,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 08:35:08,242 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 08:35:08,242 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 08:35:08,242 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_820ada87-c73a-4b63-8f47-4b66f45320db/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 08:35:08,248 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-11-18 08:35:08,256 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2018-11-18 08:35:08,256 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-18 08:35:08,257 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 08:35:08,279 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 08:35:08,297 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 08:35:08,297 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 7 [2018-11-18 08:35:08,297 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-18 08:35:08,297 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-18 08:35:08,297 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2018-11-18 08:35:08,298 INFO L87 Difference]: Start difference. First operand 18 states and 18 transitions. Second operand 7 states. [2018-11-18 08:35:08,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 08:35:08,323 INFO L93 Difference]: Finished difference Result 25 states and 25 transitions. [2018-11-18 08:35:08,323 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-18 08:35:08,324 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 17 [2018-11-18 08:35:08,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 08:35:08,324 INFO L225 Difference]: With dead ends: 25 [2018-11-18 08:35:08,324 INFO L226 Difference]: Without dead ends: 20 [2018-11-18 08:35:08,324 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2018-11-18 08:35:08,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2018-11-18 08:35:08,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2018-11-18 08:35:08,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2018-11-18 08:35:08,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 20 transitions. [2018-11-18 08:35:08,327 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 20 transitions. Word has length 17 [2018-11-18 08:35:08,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 08:35:08,327 INFO L480 AbstractCegarLoop]: Abstraction has 20 states and 20 transitions. [2018-11-18 08:35:08,327 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-18 08:35:08,327 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 20 transitions. [2018-11-18 08:35:08,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-11-18 08:35:08,328 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 08:35:08,328 INFO L375 BasicCegarLoop]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 08:35:08,328 INFO L423 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 08:35:08,328 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 08:35:08,328 INFO L82 PathProgramCache]: Analyzing trace with hash -873685328, now seen corresponding path program 4 times [2018-11-18 08:35:08,328 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 08:35:08,328 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 08:35:08,329 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 08:35:08,329 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 08:35:08,329 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 08:35:08,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 08:35:08,404 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 08:35:08,405 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 08:35:08,405 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_820ada87-c73a-4b63-8f47-4b66f45320db/bin-2019/uautomizer/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 08:35:08,423 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-11-18 08:35:08,429 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-11-18 08:35:08,429 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-18 08:35:08,430 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 08:35:08,451 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 08:35:08,469 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 08:35:08,469 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 8 [2018-11-18 08:35:08,469 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-11-18 08:35:08,469 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-11-18 08:35:08,469 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2018-11-18 08:35:08,470 INFO L87 Difference]: Start difference. First operand 20 states and 20 transitions. Second operand 8 states. [2018-11-18 08:35:08,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 08:35:08,500 INFO L93 Difference]: Finished difference Result 27 states and 27 transitions. [2018-11-18 08:35:08,500 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-18 08:35:08,500 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2018-11-18 08:35:08,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 08:35:08,501 INFO L225 Difference]: With dead ends: 27 [2018-11-18 08:35:08,501 INFO L226 Difference]: Without dead ends: 22 [2018-11-18 08:35:08,501 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2018-11-18 08:35:08,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2018-11-18 08:35:08,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2018-11-18 08:35:08,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2018-11-18 08:35:08,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 22 transitions. [2018-11-18 08:35:08,504 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 22 transitions. Word has length 19 [2018-11-18 08:35:08,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 08:35:08,504 INFO L480 AbstractCegarLoop]: Abstraction has 22 states and 22 transitions. [2018-11-18 08:35:08,504 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-11-18 08:35:08,504 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 22 transitions. [2018-11-18 08:35:08,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-11-18 08:35:08,505 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 08:35:08,505 INFO L375 BasicCegarLoop]: trace histogram [6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 08:35:08,505 INFO L423 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 08:35:08,505 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 08:35:08,505 INFO L82 PathProgramCache]: Analyzing trace with hash -1097991946, now seen corresponding path program 5 times [2018-11-18 08:35:08,506 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 08:35:08,506 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 08:35:08,506 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 08:35:08,506 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 08:35:08,506 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 08:35:08,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 08:35:08,635 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 08:35:08,635 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 08:35:08,635 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_820ada87-c73a-4b63-8f47-4b66f45320db/bin-2019/uautomizer/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 08:35:08,650 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-11-18 08:35:08,676 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2018-11-18 08:35:08,676 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-18 08:35:08,678 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 08:35:08,696 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 08:35:08,716 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 08:35:08,717 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 9 [2018-11-18 08:35:08,717 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-11-18 08:35:08,717 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-11-18 08:35:08,717 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2018-11-18 08:35:08,717 INFO L87 Difference]: Start difference. First operand 22 states and 22 transitions. Second operand 9 states. [2018-11-18 08:35:08,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 08:35:08,748 INFO L93 Difference]: Finished difference Result 29 states and 29 transitions. [2018-11-18 08:35:08,749 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-18 08:35:08,749 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 21 [2018-11-18 08:35:08,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 08:35:08,749 INFO L225 Difference]: With dead ends: 29 [2018-11-18 08:35:08,749 INFO L226 Difference]: Without dead ends: 24 [2018-11-18 08:35:08,750 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2018-11-18 08:35:08,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2018-11-18 08:35:08,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2018-11-18 08:35:08,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2018-11-18 08:35:08,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 24 transitions. [2018-11-18 08:35:08,753 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 24 transitions. Word has length 21 [2018-11-18 08:35:08,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 08:35:08,753 INFO L480 AbstractCegarLoop]: Abstraction has 24 states and 24 transitions. [2018-11-18 08:35:08,753 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-11-18 08:35:08,753 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 24 transitions. [2018-11-18 08:35:08,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-11-18 08:35:08,754 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 08:35:08,754 INFO L375 BasicCegarLoop]: trace histogram [7, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 08:35:08,754 INFO L423 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 08:35:08,754 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 08:35:08,755 INFO L82 PathProgramCache]: Analyzing trace with hash -1908287044, now seen corresponding path program 6 times [2018-11-18 08:35:08,755 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 08:35:08,755 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 08:35:08,756 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 08:35:08,756 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 08:35:08,756 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 08:35:08,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 08:35:15,595 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 38 refuted. 4 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 08:35:15,595 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 08:35:15,595 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_820ada87-c73a-4b63-8f47-4b66f45320db/bin-2019/uautomizer/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 08:35:15,605 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-11-18 08:35:15,626 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2018-11-18 08:35:15,627 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-18 08:35:15,629 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 08:35:15,952 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 08:35:15,967 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 08:35:15,967 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2018-11-18 08:35:15,968 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-11-18 08:35:15,968 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-11-18 08:35:15,968 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=289, Unknown=3, NotChecked=0, Total=342 [2018-11-18 08:35:15,969 INFO L87 Difference]: Start difference. First operand 24 states and 24 transitions. Second operand 19 states. [2018-11-18 08:35:16,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 08:35:16,107 INFO L93 Difference]: Finished difference Result 36 states and 37 transitions. [2018-11-18 08:35:16,108 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-11-18 08:35:16,108 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 23 [2018-11-18 08:35:16,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 08:35:16,108 INFO L225 Difference]: With dead ends: 36 [2018-11-18 08:35:16,109 INFO L226 Difference]: Without dead ends: 28 [2018-11-18 08:35:16,109 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 7.0s TimeCoverageRelationStatistics Valid=61, Invalid=356, Unknown=3, NotChecked=0, Total=420 [2018-11-18 08:35:16,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2018-11-18 08:35:16,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2018-11-18 08:35:16,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2018-11-18 08:35:16,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 28 transitions. [2018-11-18 08:35:16,112 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 28 transitions. Word has length 23 [2018-11-18 08:35:16,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 08:35:16,113 INFO L480 AbstractCegarLoop]: Abstraction has 28 states and 28 transitions. [2018-11-18 08:35:16,113 INFO L481 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-11-18 08:35:16,113 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 28 transitions. [2018-11-18 08:35:16,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-11-18 08:35:16,113 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 08:35:16,113 INFO L375 BasicCegarLoop]: trace histogram [9, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 08:35:16,114 INFO L423 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 08:35:16,114 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 08:35:16,114 INFO L82 PathProgramCache]: Analyzing trace with hash 1579855560, now seen corresponding path program 7 times [2018-11-18 08:35:16,114 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 08:35:16,114 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 08:35:16,115 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 08:35:16,115 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 08:35:16,115 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 08:35:16,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 08:35:16,192 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 28 proven. 42 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-11-18 08:35:16,192 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 08:35:16,192 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_820ada87-c73a-4b63-8f47-4b66f45320db/bin-2019/uautomizer/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 08:35:16,198 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 08:35:16,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 08:35:16,206 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 08:35:16,223 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 28 proven. 42 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-11-18 08:35:16,242 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 08:35:16,242 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 10 [2018-11-18 08:35:16,243 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-11-18 08:35:16,243 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-11-18 08:35:16,243 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2018-11-18 08:35:16,243 INFO L87 Difference]: Start difference. First operand 28 states and 28 transitions. Second operand 10 states. [2018-11-18 08:35:16,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 08:35:16,267 INFO L93 Difference]: Finished difference Result 28 states and 28 transitions. [2018-11-18 08:35:16,267 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-11-18 08:35:16,267 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 27 [2018-11-18 08:35:16,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 08:35:16,268 INFO L225 Difference]: With dead ends: 28 [2018-11-18 08:35:16,268 INFO L226 Difference]: Without dead ends: 0 [2018-11-18 08:35:16,268 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 26 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2018-11-18 08:35:16,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-11-18 08:35:16,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-11-18 08:35:16,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-11-18 08:35:16,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-11-18 08:35:16,269 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 27 [2018-11-18 08:35:16,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 08:35:16,269 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-18 08:35:16,269 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-11-18 08:35:16,269 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-11-18 08:35:16,269 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-18 08:35:16,272 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-11-18 08:35:16,328 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2018-11-18 08:35:16,329 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-11-18 08:35:16,329 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-11-18 08:35:16,329 INFO L428 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-11-18 08:35:16,329 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-11-18 08:35:16,329 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-11-18 08:35:16,329 INFO L428 ceAbstractionStarter]: At program point mainENTRY(lines 8 16) the Hoare annotation is: true [2018-11-18 08:35:16,329 INFO L425 ceAbstractionStarter]: For program point mainEXIT(lines 8 16) no Hoare annotation was computed. [2018-11-18 08:35:16,329 INFO L425 ceAbstractionStarter]: For program point mainFINAL(lines 8 16) no Hoare annotation was computed. [2018-11-18 08:35:16,329 INFO L425 ceAbstractionStarter]: For program point L11-1(lines 11 14) no Hoare annotation was computed. [2018-11-18 08:35:16,329 INFO L421 ceAbstractionStarter]: At program point L11-3(lines 11 14) the Hoare annotation is: (or (and (<= 2 main_~x~0) (exists ((v_main_~y~0_6 Int)) (and (<= 1 v_main_~y~0_6) (= main_~y~0 (* 4 v_main_~y~0_6)) (<= v_main_~y~0_6 1))) (<= main_~x~0 2)) (and (<= 4 main_~x~0) (<= main_~x~0 4) (exists ((v_main_~y~0_6 Int)) (and (<= 1 v_main_~y~0_6) (<= v_main_~y~0_6 1) (= (* 16 v_main_~y~0_6) main_~y~0)))) (and (exists ((v_main_~y~0_6 Int)) (and (= main_~y~0 (* 8 v_main_~y~0_6)) (<= 1 v_main_~y~0_6) (<= v_main_~y~0_6 1))) (<= main_~x~0 3) (<= 3 main_~x~0)) (and (exists ((v_main_~y~0_6 Int)) (and (= (* 32 v_main_~y~0_6) main_~y~0) (<= 1 v_main_~y~0_6) (<= v_main_~y~0_6 1))) (<= 5 main_~x~0) (<= main_~x~0 5)) (and (<= 1 main_~y~0) (<= main_~x~0 0) (<= main_~y~0 1) (<= 0 main_~x~0)) (and (<= main_~x~0 6) (exists ((v_main_~y~0_6 Int)) (and (= main_~y~0 (* 64 v_main_~y~0_6)) (<= 1 v_main_~y~0_6) (<= v_main_~y~0_6 1))) (<= 6 main_~x~0)) (and (exists ((v_main_~y~0_6 Int)) (and (<= 1 v_main_~y~0_6) (= (* 2 v_main_~y~0_6) main_~y~0) (<= v_main_~y~0_6 1))) (<= main_~x~0 1) (<= 1 main_~x~0))) [2018-11-18 08:35:16,329 INFO L421 ceAbstractionStarter]: At program point L11-4(lines 11 14) the Hoare annotation is: (not (= (let ((.cse0 (div main_~y~0 4294967296))) (let ((.cse1 (* (- 4294967296) .cse0))) (let ((.cse2 (div (+ main_~y~0 .cse1) 3))) (+ (* 4294967296 .cse0) (* 4294967296 (div (+ main_~y~0 .cse1 (* (- 3) .cse2)) 4294967296)) (* 3 .cse2))))) main_~y~0)) [2018-11-18 08:35:16,330 INFO L425 ceAbstractionStarter]: For program point L3-2(lines 2 7) no Hoare annotation was computed. [2018-11-18 08:35:16,330 INFO L428 ceAbstractionStarter]: At program point __VERIFIER_assertENTRY(lines 2 7) the Hoare annotation is: true [2018-11-18 08:35:16,330 INFO L425 ceAbstractionStarter]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2018-11-18 08:35:16,330 INFO L425 ceAbstractionStarter]: For program point __VERIFIER_assertEXIT(lines 2 7) no Hoare annotation was computed. [2018-11-18 08:35:16,330 INFO L425 ceAbstractionStarter]: For program point L4(line 4) no Hoare annotation was computed. [2018-11-18 08:35:16,330 INFO L425 ceAbstractionStarter]: For program point L3(lines 3 5) no Hoare annotation was computed. [2018-11-18 08:35:16,335 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_6,QUANTIFIED] [2018-11-18 08:35:16,336 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_6,QUANTIFIED] [2018-11-18 08:35:16,336 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_6,QUANTIFIED] [2018-11-18 08:35:16,336 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_6,QUANTIFIED] [2018-11-18 08:35:16,336 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_6,QUANTIFIED] [2018-11-18 08:35:16,337 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_6,QUANTIFIED] [2018-11-18 08:35:16,337 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_6,QUANTIFIED] [2018-11-18 08:35:16,337 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_6,QUANTIFIED] [2018-11-18 08:35:16,337 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_6,QUANTIFIED] [2018-11-18 08:35:16,337 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_6,QUANTIFIED] [2018-11-18 08:35:16,337 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_6,QUANTIFIED] [2018-11-18 08:35:16,337 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_6,QUANTIFIED] [2018-11-18 08:35:16,338 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_6,QUANTIFIED] [2018-11-18 08:35:16,338 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_6,QUANTIFIED] [2018-11-18 08:35:16,338 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_6,QUANTIFIED] [2018-11-18 08:35:16,338 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_6,QUANTIFIED] [2018-11-18 08:35:16,338 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_6,QUANTIFIED] [2018-11-18 08:35:16,338 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_6,QUANTIFIED] [2018-11-18 08:35:16,343 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_6,QUANTIFIED] [2018-11-18 08:35:16,344 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_6,QUANTIFIED] [2018-11-18 08:35:16,344 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_6,QUANTIFIED] [2018-11-18 08:35:16,344 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_6,QUANTIFIED] [2018-11-18 08:35:16,344 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_6,QUANTIFIED] [2018-11-18 08:35:16,344 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_6,QUANTIFIED] [2018-11-18 08:35:16,344 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_6,QUANTIFIED] [2018-11-18 08:35:16,345 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_6,QUANTIFIED] [2018-11-18 08:35:16,345 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_6,QUANTIFIED] [2018-11-18 08:35:16,345 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_6,QUANTIFIED] [2018-11-18 08:35:16,345 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_6,QUANTIFIED] [2018-11-18 08:35:16,345 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_6,QUANTIFIED] [2018-11-18 08:35:16,345 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_6,QUANTIFIED] [2018-11-18 08:35:16,345 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_6,QUANTIFIED] [2018-11-18 08:35:16,346 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_6,QUANTIFIED] [2018-11-18 08:35:16,346 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_6,QUANTIFIED] [2018-11-18 08:35:16,346 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_6,QUANTIFIED] [2018-11-18 08:35:16,346 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_6,QUANTIFIED] [2018-11-18 08:35:16,348 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.11 08:35:16 BoogieIcfgContainer [2018-11-18 08:35:16,348 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-18 08:35:16,348 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-18 08:35:16,348 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-18 08:35:16,349 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-18 08:35:16,349 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:35:07" (3/4) ... [2018-11-18 08:35:16,351 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-11-18 08:35:16,356 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-11-18 08:35:16,356 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-11-18 08:35:16,356 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2018-11-18 08:35:16,358 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2018-11-18 08:35:16,359 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2018-11-18 08:35:16,359 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-11-18 08:35:16,380 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((((((2 <= x && (\exists v_main_~y~0_6 : int :: (1 <= v_main_~y~0_6 && y == 4 * v_main_~y~0_6) && v_main_~y~0_6 <= 1)) && x <= 2) || ((4 <= x && x <= 4) && (\exists v_main_~y~0_6 : int :: (1 <= v_main_~y~0_6 && v_main_~y~0_6 <= 1) && 16 * v_main_~y~0_6 == y))) || (((\exists v_main_~y~0_6 : int :: (y == 8 * v_main_~y~0_6 && 1 <= v_main_~y~0_6) && v_main_~y~0_6 <= 1) && x <= 3) && 3 <= x)) || (((\exists v_main_~y~0_6 : int :: (32 * v_main_~y~0_6 == y && 1 <= v_main_~y~0_6) && v_main_~y~0_6 <= 1) && 5 <= x) && x <= 5)) || (((1 <= y && x <= 0) && y <= 1) && 0 <= x)) || ((x <= 6 && (\exists v_main_~y~0_6 : int :: (y == 64 * v_main_~y~0_6 && 1 <= v_main_~y~0_6) && v_main_~y~0_6 <= 1)) && 6 <= x)) || (((\exists v_main_~y~0_6 : int :: (1 <= v_main_~y~0_6 && 2 * v_main_~y~0_6 == y) && v_main_~y~0_6 <= 1) && x <= 1) && 1 <= x) [2018-11-18 08:35:16,389 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_820ada87-c73a-4b63-8f47-4b66f45320db/bin-2019/uautomizer/witness.graphml [2018-11-18 08:35:16,389 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-18 08:35:16,390 INFO L168 Benchmark]: Toolchain (without parser) took 9279.40 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 140.5 MB). Free memory was 959.1 MB in the beginning and 829.1 MB in the end (delta: 130.1 MB). Peak memory consumption was 270.6 MB. Max. memory is 11.5 GB. [2018-11-18 08:35:16,391 INFO L168 Benchmark]: CDTParser took 0.20 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 08:35:16,391 INFO L168 Benchmark]: CACSL2BoogieTranslator took 142.03 ms. Allocated memory is still 1.0 GB. Free memory was 959.1 MB in the beginning and 948.4 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-11-18 08:35:16,392 INFO L168 Benchmark]: Boogie Preprocessor took 23.55 ms. Allocated memory is still 1.0 GB. Free memory was 948.4 MB in the beginning and 945.7 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-11-18 08:35:16,392 INFO L168 Benchmark]: RCFGBuilder took 175.99 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 140.5 MB). Free memory was 945.7 MB in the beginning and 1.1 GB in the end (delta: -177.9 MB). Peak memory consumption was 14.1 MB. Max. memory is 11.5 GB. [2018-11-18 08:35:16,393 INFO L168 Benchmark]: TraceAbstraction took 8893.80 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 829.1 MB in the end (delta: 294.6 MB). Peak memory consumption was 294.6 MB. Max. memory is 11.5 GB. [2018-11-18 08:35:16,393 INFO L168 Benchmark]: Witness Printer took 41.15 ms. Allocated memory is still 1.2 GB. Free memory is still 829.1 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 08:35:16,395 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 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 142.03 ms. Allocated memory is still 1.0 GB. Free memory was 959.1 MB in the beginning and 948.4 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 23.55 ms. Allocated memory is still 1.0 GB. Free memory was 948.4 MB in the beginning and 945.7 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 175.99 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 140.5 MB). Free memory was 945.7 MB in the beginning and 1.1 GB in the end (delta: -177.9 MB). Peak memory consumption was 14.1 MB. Max. memory is 11.5 GB. * TraceAbstraction took 8893.80 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 829.1 MB in the end (delta: 294.6 MB). Peak memory consumption was 294.6 MB. Max. memory is 11.5 GB. * Witness Printer took 41.15 ms. Allocated memory is still 1.2 GB. Free memory is still 829.1 MB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_6,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_6,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_6,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_6,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_6,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_6,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_6,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_6,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_6,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_6,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_6,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_6,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_6,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_6,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_6,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_6,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_6,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_6,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_6,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_6,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_6,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_6,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_6,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_6,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_6,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_6,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_6,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_6,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_6,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_6,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_6,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_6,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_6,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_6,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_6,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_6,QUANTIFIED] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 4]: 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: 11]: Loop Invariant [2018-11-18 08:35:16,400 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_6,QUANTIFIED] [2018-11-18 08:35:16,400 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_6,QUANTIFIED] [2018-11-18 08:35:16,400 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_6,QUANTIFIED] [2018-11-18 08:35:16,401 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_6,QUANTIFIED] [2018-11-18 08:35:16,401 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_6,QUANTIFIED] [2018-11-18 08:35:16,401 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_6,QUANTIFIED] [2018-11-18 08:35:16,401 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_6,QUANTIFIED] [2018-11-18 08:35:16,401 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_6,QUANTIFIED] [2018-11-18 08:35:16,402 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_6,QUANTIFIED] [2018-11-18 08:35:16,402 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_6,QUANTIFIED] [2018-11-18 08:35:16,402 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_6,QUANTIFIED] [2018-11-18 08:35:16,402 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_6,QUANTIFIED] [2018-11-18 08:35:16,402 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_6,QUANTIFIED] [2018-11-18 08:35:16,402 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_6,QUANTIFIED] [2018-11-18 08:35:16,403 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_6,QUANTIFIED] [2018-11-18 08:35:16,403 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_6,QUANTIFIED] [2018-11-18 08:35:16,403 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_6,QUANTIFIED] [2018-11-18 08:35:16,403 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_6,QUANTIFIED] [2018-11-18 08:35:16,404 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_6,QUANTIFIED] [2018-11-18 08:35:16,404 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_6,QUANTIFIED] [2018-11-18 08:35:16,404 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_6,QUANTIFIED] [2018-11-18 08:35:16,404 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_6,QUANTIFIED] [2018-11-18 08:35:16,404 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_6,QUANTIFIED] [2018-11-18 08:35:16,405 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_6,QUANTIFIED] [2018-11-18 08:35:16,405 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_6,QUANTIFIED] [2018-11-18 08:35:16,405 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_6,QUANTIFIED] [2018-11-18 08:35:16,405 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_6,QUANTIFIED] [2018-11-18 08:35:16,405 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_6,QUANTIFIED] [2018-11-18 08:35:16,405 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_6,QUANTIFIED] [2018-11-18 08:35:16,406 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_6,QUANTIFIED] [2018-11-18 08:35:16,406 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_6,QUANTIFIED] [2018-11-18 08:35:16,406 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_6,QUANTIFIED] [2018-11-18 08:35:16,406 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_6,QUANTIFIED] [2018-11-18 08:35:16,406 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_6,QUANTIFIED] [2018-11-18 08:35:16,406 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_6,QUANTIFIED] [2018-11-18 08:35:16,406 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_6,QUANTIFIED] Derived loop invariant: (((((((2 <= x && (\exists v_main_~y~0_6 : int :: (1 <= v_main_~y~0_6 && y == 4 * v_main_~y~0_6) && v_main_~y~0_6 <= 1)) && x <= 2) || ((4 <= x && x <= 4) && (\exists v_main_~y~0_6 : int :: (1 <= v_main_~y~0_6 && v_main_~y~0_6 <= 1) && 16 * v_main_~y~0_6 == y))) || (((\exists v_main_~y~0_6 : int :: (y == 8 * v_main_~y~0_6 && 1 <= v_main_~y~0_6) && v_main_~y~0_6 <= 1) && x <= 3) && 3 <= x)) || (((\exists v_main_~y~0_6 : int :: (32 * v_main_~y~0_6 == y && 1 <= v_main_~y~0_6) && v_main_~y~0_6 <= 1) && 5 <= x) && x <= 5)) || (((1 <= y && x <= 0) && y <= 1) && 0 <= x)) || ((x <= 6 && (\exists v_main_~y~0_6 : int :: (y == 64 * v_main_~y~0_6 && 1 <= v_main_~y~0_6) && v_main_~y~0_6 <= 1)) && 6 <= x)) || (((\exists v_main_~y~0_6 : int :: (1 <= v_main_~y~0_6 && 2 * v_main_~y~0_6 == y) && v_main_~y~0_6 <= 1) && x <= 1) && 1 <= x) - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 18 locations, 1 error locations. SAFE Result, 8.8s OverallTime, 9 OverallIterations, 9 TraceHistogramMax, 0.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 127 SDtfs, 3 SDslu, 530 SDs, 0 SdLazy, 310 SolverSat, 22 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 185 GetRequests, 125 SyntacticMatches, 7 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 7.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=28occurred in iteration=8, 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, 9 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 16 PreInvPairs, 25 NumberOfFragments, 181 HoareAnnotationTreeSize, 16 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 14 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 7.8s InterpolantComputationTime, 291 NumberOfCodeBlocks, 291 NumberOfCodeBlocksAsserted, 32 NumberOfCheckSat, 275 ConstructedInterpolants, 15 QuantifiedInterpolants, 29995 SizeOfPredicates, 7 NumberOfNonLiveVariables, 349 ConjunctsInSsa, 80 ConjunctsInUnsatCore, 16 InterpolantComputations, 2 PerfectInterpolantSequences, 60/368 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...