./Ultimate.py --spec ../../sv-benchmarks/c/ReachSafety.prp --file ../../sv-benchmarks/c/loop-acceleration/array_true-unreach-call3_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_cc32ed12-093b-465d-b283-2f5088e57d9e/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_cc32ed12-093b-465d-b283-2f5088e57d9e/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_cc32ed12-093b-465d-b283-2f5088e57d9e/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_cc32ed12-093b-465d-b283-2f5088e57d9e/bin-2019/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/loop-acceleration/array_true-unreach-call3_true-termination.i -s /tmp/vcloud-vcloud-master/worker/working_dir_cc32ed12-093b-465d-b283-2f5088e57d9e/bin-2019/uautomizer/config/svcomp-Reach-32bit-PetriAutomizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_cc32ed12-093b-465d-b283-2f5088e57d9e/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 4090a90876c90ba415ea4bea59e2b23309410708 .......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 08:49:38,606 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-18 08:49:38,607 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-18 08:49:38,614 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-18 08:49:38,614 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-18 08:49:38,615 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-18 08:49:38,615 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-18 08:49:38,616 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-18 08:49:38,617 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-18 08:49:38,618 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-18 08:49:38,619 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-18 08:49:38,619 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-18 08:49:38,620 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-18 08:49:38,620 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-18 08:49:38,621 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-18 08:49:38,622 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-18 08:49:38,622 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-18 08:49:38,623 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-18 08:49:38,624 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-18 08:49:38,626 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-18 08:49:38,626 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-18 08:49:38,627 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-18 08:49:38,628 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-18 08:49:38,629 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-18 08:49:38,629 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-18 08:49:38,629 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-18 08:49:38,630 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-18 08:49:38,631 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-18 08:49:38,631 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-18 08:49:38,632 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-18 08:49:38,632 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-18 08:49:38,632 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-18 08:49:38,633 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-18 08:49:38,633 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-18 08:49:38,633 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-18 08:49:38,634 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-18 08:49:38,634 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_cc32ed12-093b-465d-b283-2f5088e57d9e/bin-2019/uautomizer/config/svcomp-Reach-32bit-PetriAutomizer_Default.epf [2018-11-18 08:49:38,643 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-18 08:49:38,643 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-18 08:49:38,644 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-18 08:49:38,644 INFO L133 SettingsManager]: * Process only entry and re-entry procedures=false [2018-11-18 08:49:38,644 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-18 08:49:38,644 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-18 08:49:38,645 INFO L133 SettingsManager]: * Use SBE=true [2018-11-18 08:49:38,645 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-18 08:49:38,645 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-18 08:49:38,645 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-18 08:49:38,645 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-18 08:49:38,645 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-18 08:49:38,645 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-18 08:49:38,646 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-18 08:49:38,646 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-18 08:49:38,646 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-18 08:49:38,646 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-18 08:49:38,646 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-18 08:49:38,646 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-18 08:49:38,646 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-18 08:49:38,646 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-18 08:49:38,647 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-18 08:49:38,647 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-18 08:49:38,647 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-18 08:49:38,647 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-18 08:49:38,647 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-18 08:49:38,647 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-18 08:49:38,647 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-18 08:49:38,648 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-18 08:49:38,648 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-18 08:49:38,648 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_cc32ed12-093b-465d-b283-2f5088e57d9e/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 -> 4090a90876c90ba415ea4bea59e2b23309410708 [2018-11-18 08:49:38,671 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-18 08:49:38,680 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-18 08:49:38,682 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-18 08:49:38,683 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-18 08:49:38,684 INFO L276 PluginConnector]: CDTParser initialized [2018-11-18 08:49:38,684 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_cc32ed12-093b-465d-b283-2f5088e57d9e/bin-2019/uautomizer/../../sv-benchmarks/c/loop-acceleration/array_true-unreach-call3_true-termination.i [2018-11-18 08:49:38,719 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_cc32ed12-093b-465d-b283-2f5088e57d9e/bin-2019/uautomizer/data/33ec1f4d2/8eefae9873944c748a829b80b2b1dd84/FLAGb2e9731c3 [2018-11-18 08:49:39,111 INFO L307 CDTParser]: Found 1 translation units. [2018-11-18 08:49:39,112 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_cc32ed12-093b-465d-b283-2f5088e57d9e/sv-benchmarks/c/loop-acceleration/array_true-unreach-call3_true-termination.i [2018-11-18 08:49:39,115 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_cc32ed12-093b-465d-b283-2f5088e57d9e/bin-2019/uautomizer/data/33ec1f4d2/8eefae9873944c748a829b80b2b1dd84/FLAGb2e9731c3 [2018-11-18 08:49:39,124 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_cc32ed12-093b-465d-b283-2f5088e57d9e/bin-2019/uautomizer/data/33ec1f4d2/8eefae9873944c748a829b80b2b1dd84 [2018-11-18 08:49:39,126 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-18 08:49:39,127 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-18 08:49:39,127 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-18 08:49:39,128 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-18 08:49:39,130 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-18 08:49:39,131 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:49:39" (1/1) ... [2018-11-18 08:49:39,132 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@411459c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:49:39, skipping insertion in model container [2018-11-18 08:49:39,132 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:49:39" (1/1) ... [2018-11-18 08:49:39,139 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-18 08:49:39,151 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-18 08:49:39,258 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 08:49:39,260 INFO L191 MainTranslator]: Completed pre-run [2018-11-18 08:49:39,272 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 08:49:39,284 INFO L195 MainTranslator]: Completed translation [2018-11-18 08:49:39,285 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:49:39 WrapperNode [2018-11-18 08:49:39,285 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-18 08:49:39,285 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-18 08:49:39,285 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-18 08:49:39,286 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-18 08:49:39,293 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:49:39" (1/1) ... [2018-11-18 08:49:39,293 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:49:39" (1/1) ... [2018-11-18 08:49:39,298 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:49:39" (1/1) ... [2018-11-18 08:49:39,298 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:49:39" (1/1) ... [2018-11-18 08:49:39,302 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:49:39" (1/1) ... [2018-11-18 08:49:39,305 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:49:39" (1/1) ... [2018-11-18 08:49:39,306 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:49:39" (1/1) ... [2018-11-18 08:49:39,308 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-18 08:49:39,308 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-18 08:49:39,308 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-18 08:49:39,308 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-18 08:49:39,309 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:49:39" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_cc32ed12-093b-465d-b283-2f5088e57d9e/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 08:49:39,392 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-18 08:49:39,392 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-18 08:49:39,393 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-11-18 08:49:39,393 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-18 08:49:39,393 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-11-18 08:49:39,393 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-11-18 08:49:39,393 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-11-18 08:49:39,393 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-18 08:49:39,393 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-11-18 08:49:39,393 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-11-18 08:49:39,394 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-11-18 08:49:39,394 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-11-18 08:49:39,394 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-18 08:49:39,394 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-18 08:49:39,394 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2018-11-18 08:49:39,528 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-18 08:49:39,528 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:49:39 BoogieIcfgContainer [2018-11-18 08:49:39,528 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-18 08:49:39,529 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-18 08:49:39,529 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-18 08:49:39,531 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-18 08:49:39,531 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 08:49:39" (1/3) ... [2018-11-18 08:49:39,532 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c6651a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 08:49:39, skipping insertion in model container [2018-11-18 08:49:39,532 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:49:39" (2/3) ... [2018-11-18 08:49:39,532 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c6651a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 08:49:39, skipping insertion in model container [2018-11-18 08:49:39,532 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:49:39" (3/3) ... [2018-11-18 08:49:39,534 INFO L112 eAbstractionObserver]: Analyzing ICFG array_true-unreach-call3_true-termination.i [2018-11-18 08:49:39,539 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-18 08:49:39,543 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-18 08:49:39,553 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-18 08:49:39,571 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-18 08:49:39,572 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-18 08:49:39,572 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-18 08:49:39,572 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-18 08:49:39,572 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-18 08:49:39,572 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-18 08:49:39,572 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-18 08:49:39,572 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-18 08:49:39,572 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-18 08:49:39,584 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states. [2018-11-18 08:49:39,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-11-18 08:49:39,589 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 08:49:39,590 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 08:49:39,592 INFO L423 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 08:49:39,596 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 08:49:39,596 INFO L82 PathProgramCache]: Analyzing trace with hash -1794184535, now seen corresponding path program 1 times [2018-11-18 08:49:39,598 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 08:49:39,598 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 08:49:39,629 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 08:49:39,630 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 08:49:39,630 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 08:49:39,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 08:49:39,670 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 08:49:39,672 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 08:49:39,672 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-18 08:49:39,674 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-11-18 08:49:39,682 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-11-18 08:49:39,683 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-18 08:49:39,685 INFO L87 Difference]: Start difference. First operand 26 states. Second operand 2 states. [2018-11-18 08:49:39,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 08:49:39,701 INFO L93 Difference]: Finished difference Result 43 states and 52 transitions. [2018-11-18 08:49:39,701 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-11-18 08:49:39,702 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 13 [2018-11-18 08:49:39,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 08:49:39,707 INFO L225 Difference]: With dead ends: 43 [2018-11-18 08:49:39,707 INFO L226 Difference]: Without dead ends: 19 [2018-11-18 08:49:39,709 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 08:49:39,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2018-11-18 08:49:39,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2018-11-18 08:49:39,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2018-11-18 08:49:39,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 21 transitions. [2018-11-18 08:49:39,730 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 21 transitions. Word has length 13 [2018-11-18 08:49:39,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 08:49:39,730 INFO L480 AbstractCegarLoop]: Abstraction has 19 states and 21 transitions. [2018-11-18 08:49:39,730 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-11-18 08:49:39,730 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2018-11-18 08:49:39,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-11-18 08:49:39,731 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 08:49:39,731 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 08:49:39,731 INFO L423 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 08:49:39,731 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 08:49:39,731 INFO L82 PathProgramCache]: Analyzing trace with hash 612144665, now seen corresponding path program 1 times [2018-11-18 08:49:39,731 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 08:49:39,731 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 08:49:39,732 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 08:49:39,732 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 08:49:39,732 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 08:49:39,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 08:49:39,767 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 08:49:39,767 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 08:49:39,767 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-18 08:49:39,768 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-18 08:49:39,768 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-18 08:49:39,768 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-18 08:49:39,769 INFO L87 Difference]: Start difference. First operand 19 states and 21 transitions. Second operand 3 states. [2018-11-18 08:49:39,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 08:49:39,799 INFO L93 Difference]: Finished difference Result 37 states and 43 transitions. [2018-11-18 08:49:39,799 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-18 08:49:39,799 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 15 [2018-11-18 08:49:39,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 08:49:39,801 INFO L225 Difference]: With dead ends: 37 [2018-11-18 08:49:39,802 INFO L226 Difference]: Without dead ends: 27 [2018-11-18 08:49:39,802 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 08:49:39,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2018-11-18 08:49:39,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 24. [2018-11-18 08:49:39,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2018-11-18 08:49:39,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 27 transitions. [2018-11-18 08:49:39,806 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 27 transitions. Word has length 15 [2018-11-18 08:49:39,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 08:49:39,806 INFO L480 AbstractCegarLoop]: Abstraction has 24 states and 27 transitions. [2018-11-18 08:49:39,806 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-18 08:49:39,806 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 27 transitions. [2018-11-18 08:49:39,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-11-18 08:49:39,807 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 08:49:39,807 INFO L375 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 08:49:39,807 INFO L423 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 08:49:39,807 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 08:49:39,807 INFO L82 PathProgramCache]: Analyzing trace with hash -1794172150, now seen corresponding path program 1 times [2018-11-18 08:49:39,807 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 08:49:39,807 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 08:49:39,808 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 08:49:39,808 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 08:49:39,808 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 08:49:39,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 08:49:39,853 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 08:49:39,854 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 08:49:39,854 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_cc32ed12-093b-465d-b283-2f5088e57d9e/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 08:49:39,863 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 08:49:39,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 08:49:39,882 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 08:49:39,899 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 08:49:39,914 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 08:49:39,914 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2018-11-18 08:49:39,915 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-18 08:49:39,915 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-18 08:49:39,915 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-11-18 08:49:39,915 INFO L87 Difference]: Start difference. First operand 24 states and 27 transitions. Second operand 5 states. [2018-11-18 08:49:39,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 08:49:39,993 INFO L93 Difference]: Finished difference Result 48 states and 56 transitions. [2018-11-18 08:49:39,993 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-18 08:49:39,994 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2018-11-18 08:49:39,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 08:49:39,994 INFO L225 Difference]: With dead ends: 48 [2018-11-18 08:49:39,994 INFO L226 Difference]: Without dead ends: 35 [2018-11-18 08:49:39,995 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-11-18 08:49:39,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2018-11-18 08:49:39,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 31. [2018-11-18 08:49:39,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2018-11-18 08:49:39,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 35 transitions. [2018-11-18 08:49:39,998 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 35 transitions. Word has length 18 [2018-11-18 08:49:39,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 08:49:39,999 INFO L480 AbstractCegarLoop]: Abstraction has 31 states and 35 transitions. [2018-11-18 08:49:39,999 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-18 08:49:39,999 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 35 transitions. [2018-11-18 08:49:39,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-11-18 08:49:39,999 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 08:49:39,999 INFO L375 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 08:49:40,000 INFO L423 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 08:49:40,000 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 08:49:40,000 INFO L82 PathProgramCache]: Analyzing trace with hash -1079270279, now seen corresponding path program 2 times [2018-11-18 08:49:40,000 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 08:49:40,000 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 08:49:40,001 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 08:49:40,001 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 08:49:40,001 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 08:49:40,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 08:49:40,042 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 08:49:40,042 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 08:49:40,042 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_cc32ed12-093b-465d-b283-2f5088e57d9e/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 08:49:40,050 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-11-18 08:49:40,060 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2018-11-18 08:49:40,061 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-18 08:49:40,062 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 08:49:40,119 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2018-11-18 08:49:40,137 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-18 08:49:40,137 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 8 [2018-11-18 08:49:40,138 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-11-18 08:49:40,138 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-11-18 08:49:40,138 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-11-18 08:49:40,138 INFO L87 Difference]: Start difference. First operand 31 states and 35 transitions. Second operand 8 states. [2018-11-18 08:49:40,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 08:49:40,195 INFO L93 Difference]: Finished difference Result 62 states and 72 transitions. [2018-11-18 08:49:40,196 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-18 08:49:40,196 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 21 [2018-11-18 08:49:40,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 08:49:40,196 INFO L225 Difference]: With dead ends: 62 [2018-11-18 08:49:40,196 INFO L226 Difference]: Without dead ends: 40 [2018-11-18 08:49:40,197 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2018-11-18 08:49:40,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2018-11-18 08:49:40,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 38. [2018-11-18 08:49:40,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2018-11-18 08:49:40,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 40 transitions. [2018-11-18 08:49:40,200 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 40 transitions. Word has length 21 [2018-11-18 08:49:40,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 08:49:40,200 INFO L480 AbstractCegarLoop]: Abstraction has 38 states and 40 transitions. [2018-11-18 08:49:40,200 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-11-18 08:49:40,200 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 40 transitions. [2018-11-18 08:49:40,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2018-11-18 08:49:40,200 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 08:49:40,200 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 08:49:40,201 INFO L423 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 08:49:40,201 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 08:49:40,201 INFO L82 PathProgramCache]: Analyzing trace with hash -465970561, now seen corresponding path program 1 times [2018-11-18 08:49:40,201 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 08:49:40,201 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 08:49:40,201 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 08:49:40,202 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 08:49:40,202 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 08:49:40,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 08:49:40,255 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-11-18 08:49:40,256 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 08:49:40,256 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_cc32ed12-093b-465d-b283-2f5088e57d9e/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 08:49:40,266 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 08:49:40,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 08:49:40,281 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 08:49:40,295 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-11-18 08:49:40,315 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 08:49:40,315 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 7 [2018-11-18 08:49:40,315 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-18 08:49:40,316 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-18 08:49:40,316 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2018-11-18 08:49:40,316 INFO L87 Difference]: Start difference. First operand 38 states and 40 transitions. Second operand 7 states. [2018-11-18 08:49:40,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 08:49:40,347 INFO L93 Difference]: Finished difference Result 69 states and 75 transitions. [2018-11-18 08:49:40,347 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-18 08:49:40,347 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 36 [2018-11-18 08:49:40,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 08:49:40,348 INFO L225 Difference]: With dead ends: 69 [2018-11-18 08:49:40,348 INFO L226 Difference]: Without dead ends: 48 [2018-11-18 08:49:40,348 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2018-11-18 08:49:40,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2018-11-18 08:49:40,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 45. [2018-11-18 08:49:40,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2018-11-18 08:49:40,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 48 transitions. [2018-11-18 08:49:40,353 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 48 transitions. Word has length 36 [2018-11-18 08:49:40,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 08:49:40,353 INFO L480 AbstractCegarLoop]: Abstraction has 45 states and 48 transitions. [2018-11-18 08:49:40,353 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-18 08:49:40,353 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 48 transitions. [2018-11-18 08:49:40,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2018-11-18 08:49:40,354 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 08:49:40,354 INFO L375 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 08:49:40,354 INFO L423 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 08:49:40,354 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 08:49:40,354 INFO L82 PathProgramCache]: Analyzing trace with hash 2064025134, now seen corresponding path program 2 times [2018-11-18 08:49:40,354 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 08:49:40,355 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 08:49:40,355 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 08:49:40,355 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 08:49:40,355 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 08:49:40,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 08:49:40,404 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-11-18 08:49:40,404 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 08:49:40,404 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_cc32ed12-093b-465d-b283-2f5088e57d9e/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 08:49:40,414 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-11-18 08:49:40,434 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-18 08:49:40,434 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-18 08:49:40,436 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 08:49:40,451 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-11-18 08:49:40,474 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 08:49:40,475 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 8 [2018-11-18 08:49:40,475 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-11-18 08:49:40,475 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-11-18 08:49:40,475 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2018-11-18 08:49:40,476 INFO L87 Difference]: Start difference. First operand 45 states and 48 transitions. Second operand 8 states. [2018-11-18 08:49:40,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 08:49:40,535 INFO L93 Difference]: Finished difference Result 81 states and 89 transitions. [2018-11-18 08:49:40,535 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-18 08:49:40,535 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 39 [2018-11-18 08:49:40,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 08:49:40,536 INFO L225 Difference]: With dead ends: 81 [2018-11-18 08:49:40,536 INFO L226 Difference]: Without dead ends: 56 [2018-11-18 08:49:40,537 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2018-11-18 08:49:40,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2018-11-18 08:49:40,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 52. [2018-11-18 08:49:40,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2018-11-18 08:49:40,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 56 transitions. [2018-11-18 08:49:40,542 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 56 transitions. Word has length 39 [2018-11-18 08:49:40,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 08:49:40,542 INFO L480 AbstractCegarLoop]: Abstraction has 52 states and 56 transitions. [2018-11-18 08:49:40,542 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-11-18 08:49:40,543 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 56 transitions. [2018-11-18 08:49:40,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2018-11-18 08:49:40,543 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 08:49:40,543 INFO L375 BasicCegarLoop]: trace histogram [6, 5, 5, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 08:49:40,544 INFO L423 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 08:49:40,544 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 08:49:40,544 INFO L82 PathProgramCache]: Analyzing trace with hash 784697375, now seen corresponding path program 3 times [2018-11-18 08:49:40,544 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 08:49:40,544 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 08:49:40,545 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 08:49:40,545 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 08:49:40,545 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 08:49:40,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 08:49:40,614 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-11-18 08:49:40,614 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 08:49:40,614 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_cc32ed12-093b-465d-b283-2f5088e57d9e/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 08:49:40,625 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-11-18 08:49:40,638 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2018-11-18 08:49:40,638 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-18 08:49:40,640 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 08:49:40,673 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2018-11-18 08:49:40,687 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-18 08:49:40,687 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [8] total 12 [2018-11-18 08:49:40,688 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-11-18 08:49:40,688 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-11-18 08:49:40,688 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=83, Unknown=0, NotChecked=0, Total=132 [2018-11-18 08:49:40,688 INFO L87 Difference]: Start difference. First operand 52 states and 56 transitions. Second operand 12 states. [2018-11-18 08:49:40,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 08:49:40,804 INFO L93 Difference]: Finished difference Result 100 states and 115 transitions. [2018-11-18 08:49:40,805 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-11-18 08:49:40,805 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 42 [2018-11-18 08:49:40,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 08:49:40,805 INFO L225 Difference]: With dead ends: 100 [2018-11-18 08:49:40,805 INFO L226 Difference]: Without dead ends: 0 [2018-11-18 08:49:40,806 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2018-11-18 08:49:40,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-11-18 08:49:40,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-11-18 08:49:40,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-11-18 08:49:40,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-11-18 08:49:40,807 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 42 [2018-11-18 08:49:40,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 08:49:40,807 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-18 08:49:40,807 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-11-18 08:49:40,807 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-11-18 08:49:40,807 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-18 08:49:40,810 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-11-18 08:49:40,857 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2018-11-18 08:49:40,857 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: true [2018-11-18 08:49:40,857 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-11-18 08:49:40,857 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-11-18 08:49:40,857 INFO L428 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-11-18 08:49:40,857 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-11-18 08:49:40,857 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-11-18 08:49:40,857 INFO L425 ceAbstractionStarter]: For program point mainEXIT(lines 9 23) no Hoare annotation was computed. [2018-11-18 08:49:40,857 INFO L425 ceAbstractionStarter]: For program point L17-1(lines 17 21) no Hoare annotation was computed. [2018-11-18 08:49:40,857 INFO L425 ceAbstractionStarter]: For program point L17-3(lines 17 21) no Hoare annotation was computed. [2018-11-18 08:49:40,857 INFO L421 ceAbstractionStarter]: At program point L17-4(lines 17 21) the Hoare annotation is: (<= main_~i~0 1023) [2018-11-18 08:49:40,858 INFO L425 ceAbstractionStarter]: For program point mainFINAL(lines 9 23) no Hoare annotation was computed. [2018-11-18 08:49:40,858 INFO L425 ceAbstractionStarter]: For program point L13-1(lines 13 15) no Hoare annotation was computed. [2018-11-18 08:49:40,858 INFO L421 ceAbstractionStarter]: At program point L17-5(lines 17 21) the Hoare annotation is: (<= main_~i~0 1023) [2018-11-18 08:49:40,858 INFO L425 ceAbstractionStarter]: For program point L13-3(lines 13 15) no Hoare annotation was computed. [2018-11-18 08:49:40,858 INFO L428 ceAbstractionStarter]: At program point L13-4(lines 13 15) the Hoare annotation is: true [2018-11-18 08:49:40,858 INFO L425 ceAbstractionStarter]: For program point L13-5(lines 13 15) no Hoare annotation was computed. [2018-11-18 08:49:40,858 INFO L428 ceAbstractionStarter]: At program point mainENTRY(lines 9 23) the Hoare annotation is: true [2018-11-18 08:49:40,858 INFO L425 ceAbstractionStarter]: For program point L22(line 22) no Hoare annotation was computed. [2018-11-18 08:49:40,858 INFO L425 ceAbstractionStarter]: For program point L18(lines 18 20) no Hoare annotation was computed. [2018-11-18 08:49:40,858 INFO L425 ceAbstractionStarter]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2018-11-18 08:49:40,858 INFO L428 ceAbstractionStarter]: At program point __VERIFIER_assertENTRY(lines 3 8) the Hoare annotation is: true [2018-11-18 08:49:40,858 INFO L425 ceAbstractionStarter]: For program point __VERIFIER_assertEXIT(lines 3 8) no Hoare annotation was computed. [2018-11-18 08:49:40,858 INFO L425 ceAbstractionStarter]: For program point L5(line 5) no Hoare annotation was computed. [2018-11-18 08:49:40,858 INFO L425 ceAbstractionStarter]: For program point L4(lines 4 6) no Hoare annotation was computed. [2018-11-18 08:49:40,858 INFO L425 ceAbstractionStarter]: For program point L4-2(lines 3 8) no Hoare annotation was computed. [2018-11-18 08:49:40,866 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.11 08:49:40 BoogieIcfgContainer [2018-11-18 08:49:40,867 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-18 08:49:40,867 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-18 08:49:40,867 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-18 08:49:40,867 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-18 08:49:40,867 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:49:39" (3/4) ... [2018-11-18 08:49:40,870 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-11-18 08:49:40,874 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-11-18 08:49:40,874 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-11-18 08:49:40,874 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2018-11-18 08:49:40,877 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2018-11-18 08:49:40,878 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2018-11-18 08:49:40,878 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2018-11-18 08:49:40,903 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_cc32ed12-093b-465d-b283-2f5088e57d9e/bin-2019/uautomizer/witness.graphml [2018-11-18 08:49:40,903 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-18 08:49:40,904 INFO L168 Benchmark]: Toolchain (without parser) took 1777.71 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 135.3 MB). Free memory was 959.1 MB in the beginning and 922.3 MB in the end (delta: 36.8 MB). Peak memory consumption was 172.1 MB. Max. memory is 11.5 GB. [2018-11-18 08:49:40,905 INFO L168 Benchmark]: CDTParser took 0.11 ms. Allocated memory is still 1.0 GB. Free memory is still 985.4 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 08:49:40,906 INFO L168 Benchmark]: CACSL2BoogieTranslator took 157.71 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 08:49:40,906 INFO L168 Benchmark]: Boogie Preprocessor took 22.29 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 08:49:40,906 INFO L168 Benchmark]: RCFGBuilder took 220.17 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 135.3 MB). Free memory was 945.7 MB in the beginning and 1.1 GB in the end (delta: -169.1 MB). Peak memory consumption was 14.4 MB. Max. memory is 11.5 GB. [2018-11-18 08:49:40,907 INFO L168 Benchmark]: TraceAbstraction took 1338.08 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 925.8 MB in the end (delta: 189.1 MB). Peak memory consumption was 189.1 MB. Max. memory is 11.5 GB. [2018-11-18 08:49:40,907 INFO L168 Benchmark]: Witness Printer took 36.70 ms. Allocated memory is still 1.2 GB. Free memory was 925.8 MB in the beginning and 922.3 MB in the end (delta: 3.4 MB). Peak memory consumption was 3.4 MB. Max. memory is 11.5 GB. [2018-11-18 08:49:40,909 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11 ms. Allocated memory is still 1.0 GB. Free memory is still 985.4 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 157.71 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 22.29 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 220.17 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 135.3 MB). Free memory was 945.7 MB in the beginning and 1.1 GB in the end (delta: -169.1 MB). Peak memory consumption was 14.4 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1338.08 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 925.8 MB in the end (delta: 189.1 MB). Peak memory consumption was 189.1 MB. Max. memory is 11.5 GB. * Witness Printer took 36.70 ms. Allocated memory is still 1.2 GB. Free memory was 925.8 MB in the beginning and 922.3 MB in the end (delta: 3.4 MB). Peak memory consumption was 3.4 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 5]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: i <= 1023 - InvariantResult [Line: 13]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 26 locations, 1 error locations. SAFE Result, 1.2s OverallTime, 7 OverallIterations, 6 TraceHistogramMax, 0.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 119 SDtfs, 156 SDslu, 239 SDs, 0 SdLazy, 210 SolverSat, 59 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 188 GetRequests, 155 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=52occurred in iteration=6, 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, 7 MinimizatonAttempts, 16 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 8 LocationsWithAnnotation, 22 PreInvPairs, 46 NumberOfFragments, 12 HoareAnnotationTreeSize, 22 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 8 FomulaSimplificationsInter, 44 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 340 NumberOfCodeBlocks, 314 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 328 ConstructedInterpolants, 0 QuantifiedInterpolants, 16888 SizeOfPredicates, 7 NumberOfNonLiveVariables, 370 ConjunctsInSsa, 29 ConjunctsInUnsatCore, 12 InterpolantComputations, 4 PerfectInterpolantSequences, 155/288 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...