./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/recursive/Ackermann03_true-unreach-call_true-no-overflow.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 635dfa2a Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_d59cebcb-3b33-454f-abc8-e4d179ea1d81/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_d59cebcb-3b33-454f-abc8-e4d179ea1d81/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_d59cebcb-3b33-454f-abc8-e4d179ea1d81/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_d59cebcb-3b33-454f-abc8-e4d179ea1d81/bin-2019/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/recursive/Ackermann03_true-unreach-call_true-no-overflow.c -s /tmp/vcloud-vcloud-master/worker/working_dir_d59cebcb-3b33-454f-abc8-e4d179ea1d81/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_d59cebcb-3b33-454f-abc8-e4d179ea1d81/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 33d0641b9a339cc7e30dea71c1d04be4d72dcf57 ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-635dfa2 [2018-12-09 04:08:09,933 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-09 04:08:09,933 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-09 04:08:09,939 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-09 04:08:09,939 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-09 04:08:09,940 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-09 04:08:09,941 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-09 04:08:09,941 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-09 04:08:09,942 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-09 04:08:09,942 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-09 04:08:09,943 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-09 04:08:09,943 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-09 04:08:09,944 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-09 04:08:09,944 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-09 04:08:09,945 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-09 04:08:09,945 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-09 04:08:09,945 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-09 04:08:09,946 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-09 04:08:09,947 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-09 04:08:09,948 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-09 04:08:09,948 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-09 04:08:09,949 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-09 04:08:09,950 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-09 04:08:09,950 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-09 04:08:09,950 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-09 04:08:09,951 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-09 04:08:09,951 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-09 04:08:09,951 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-09 04:08:09,952 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-09 04:08:09,952 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-09 04:08:09,952 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-09 04:08:09,953 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-09 04:08:09,953 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-09 04:08:09,953 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-09 04:08:09,954 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-09 04:08:09,954 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-09 04:08:09,954 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_d59cebcb-3b33-454f-abc8-e4d179ea1d81/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2018-12-09 04:08:09,961 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-09 04:08:09,961 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-09 04:08:09,961 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-12-09 04:08:09,962 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-12-09 04:08:09,962 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-12-09 04:08:09,962 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-12-09 04:08:09,962 INFO L133 SettingsManager]: * Use SBE=true [2018-12-09 04:08:09,962 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-09 04:08:09,963 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-09 04:08:09,963 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-12-09 04:08:09,963 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-09 04:08:09,963 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-09 04:08:09,963 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-12-09 04:08:09,963 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-09 04:08:09,963 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-12-09 04:08:09,963 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-09 04:08:09,964 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-09 04:08:09,964 INFO L133 SettingsManager]: * Use constant arrays=true [2018-12-09 04:08:09,964 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-12-09 04:08:09,964 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-09 04:08:09,964 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-09 04:08:09,964 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-12-09 04:08:09,964 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-09 04:08:09,964 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-09 04:08:09,965 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-09 04:08:09,965 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-09 04:08:09,965 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-12-09 04:08:09,965 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-12-09 04:08:09,965 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-09 04:08:09,965 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-12-09 04:08:09,965 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_d59cebcb-3b33-454f-abc8-e4d179ea1d81/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 -> 33d0641b9a339cc7e30dea71c1d04be4d72dcf57 [2018-12-09 04:08:09,983 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-09 04:08:09,990 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-09 04:08:09,992 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-09 04:08:09,992 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-09 04:08:09,993 INFO L276 PluginConnector]: CDTParser initialized [2018-12-09 04:08:09,993 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_d59cebcb-3b33-454f-abc8-e4d179ea1d81/bin-2019/uautomizer/../../sv-benchmarks/c/recursive/Ackermann03_true-unreach-call_true-no-overflow.c [2018-12-09 04:08:10,027 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_d59cebcb-3b33-454f-abc8-e4d179ea1d81/bin-2019/uautomizer/data/5ea20fd51/e11b312dfaab4b79a747d7d5815b4858/FLAG0eceb0605 [2018-12-09 04:08:10,454 INFO L307 CDTParser]: Found 1 translation units. [2018-12-09 04:08:10,454 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_d59cebcb-3b33-454f-abc8-e4d179ea1d81/sv-benchmarks/c/recursive/Ackermann03_true-unreach-call_true-no-overflow.c [2018-12-09 04:08:10,458 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_d59cebcb-3b33-454f-abc8-e4d179ea1d81/bin-2019/uautomizer/data/5ea20fd51/e11b312dfaab4b79a747d7d5815b4858/FLAG0eceb0605 [2018-12-09 04:08:10,467 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_d59cebcb-3b33-454f-abc8-e4d179ea1d81/bin-2019/uautomizer/data/5ea20fd51/e11b312dfaab4b79a747d7d5815b4858 [2018-12-09 04:08:10,469 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-09 04:08:10,470 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-09 04:08:10,470 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-09 04:08:10,470 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-09 04:08:10,472 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-09 04:08:10,473 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 04:08:10" (1/1) ... [2018-12-09 04:08:10,474 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@54724d61 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:08:10, skipping insertion in model container [2018-12-09 04:08:10,475 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 04:08:10" (1/1) ... [2018-12-09 04:08:10,479 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-09 04:08:10,488 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-09 04:08:10,573 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-09 04:08:10,576 INFO L191 MainTranslator]: Completed pre-run [2018-12-09 04:08:10,585 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-09 04:08:10,593 INFO L195 MainTranslator]: Completed translation [2018-12-09 04:08:10,594 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:08:10 WrapperNode [2018-12-09 04:08:10,594 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-09 04:08:10,594 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-09 04:08:10,594 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-09 04:08:10,594 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-09 04:08:10,599 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:08:10" (1/1) ... [2018-12-09 04:08:10,602 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:08:10" (1/1) ... [2018-12-09 04:08:10,606 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-09 04:08:10,606 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-09 04:08:10,606 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-09 04:08:10,606 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-09 04:08:10,611 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:08:10" (1/1) ... [2018-12-09 04:08:10,612 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:08:10" (1/1) ... [2018-12-09 04:08:10,612 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:08:10" (1/1) ... [2018-12-09 04:08:10,612 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:08:10" (1/1) ... [2018-12-09 04:08:10,614 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:08:10" (1/1) ... [2018-12-09 04:08:10,615 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:08:10" (1/1) ... [2018-12-09 04:08:10,616 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:08:10" (1/1) ... [2018-12-09 04:08:10,616 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-09 04:08:10,617 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-09 04:08:10,617 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-09 04:08:10,617 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-09 04:08:10,617 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:08:10" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d59cebcb-3b33-454f-abc8-e4d179ea1d81/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 [2018-12-09 04:08:10,683 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-12-09 04:08:10,684 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-12-09 04:08:10,684 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-09 04:08:10,684 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-09 04:08:10,684 INFO L130 BoogieDeclarations]: Found specification of procedure ackermann [2018-12-09 04:08:10,684 INFO L138 BoogieDeclarations]: Found implementation of procedure ackermann [2018-12-09 04:08:10,684 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-12-09 04:08:10,684 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-12-09 04:08:10,773 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-09 04:08:10,773 INFO L280 CfgBuilder]: Removed 0 assue(true) statements. [2018-12-09 04:08:10,774 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 04:08:10 BoogieIcfgContainer [2018-12-09 04:08:10,774 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-09 04:08:10,774 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-09 04:08:10,774 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-09 04:08:10,776 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-09 04:08:10,776 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 04:08:10" (1/3) ... [2018-12-09 04:08:10,777 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ce73afb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 04:08:10, skipping insertion in model container [2018-12-09 04:08:10,777 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:08:10" (2/3) ... [2018-12-09 04:08:10,777 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ce73afb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 04:08:10, skipping insertion in model container [2018-12-09 04:08:10,777 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 04:08:10" (3/3) ... [2018-12-09 04:08:10,778 INFO L112 eAbstractionObserver]: Analyzing ICFG Ackermann03_true-unreach-call_true-no-overflow.c [2018-12-09 04:08:10,784 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-09 04:08:10,787 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-12-09 04:08:10,796 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-12-09 04:08:10,812 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-12-09 04:08:10,812 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-09 04:08:10,812 INFO L383 AbstractCegarLoop]: Hoare is true [2018-12-09 04:08:10,812 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-09 04:08:10,812 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-09 04:08:10,812 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-09 04:08:10,812 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-09 04:08:10,813 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-09 04:08:10,813 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-09 04:08:10,822 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states. [2018-12-09 04:08:10,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-12-09 04:08:10,826 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 04:08:10,826 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 04:08:10,827 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 04:08:10,830 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 04:08:10,831 INFO L82 PathProgramCache]: Analyzing trace with hash -1796234678, now seen corresponding path program 1 times [2018-12-09 04:08:10,832 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-09 04:08:10,832 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-09 04:08:10,866 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 04:08:10,866 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 04:08:10,866 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 04:08:10,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 04:08:10,939 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 04:08:10,941 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 04:08:10,941 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-12-09 04:08:10,943 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-12-09 04:08:10,951 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-12-09 04:08:10,951 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-12-09 04:08:10,952 INFO L87 Difference]: Start difference. First operand 27 states. Second operand 5 states. [2018-12-09 04:08:11,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 04:08:11,033 INFO L93 Difference]: Finished difference Result 55 states and 77 transitions. [2018-12-09 04:08:11,034 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-12-09 04:08:11,035 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2018-12-09 04:08:11,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 04:08:11,040 INFO L225 Difference]: With dead ends: 55 [2018-12-09 04:08:11,040 INFO L226 Difference]: Without dead ends: 28 [2018-12-09 04:08:11,042 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-12-09 04:08:11,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2018-12-09 04:08:11,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2018-12-09 04:08:11,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2018-12-09 04:08:11,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 35 transitions. [2018-12-09 04:08:11,067 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 35 transitions. Word has length 15 [2018-12-09 04:08:11,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 04:08:11,067 INFO L480 AbstractCegarLoop]: Abstraction has 28 states and 35 transitions. [2018-12-09 04:08:11,068 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-12-09 04:08:11,068 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 35 transitions. [2018-12-09 04:08:11,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-12-09 04:08:11,069 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 04:08:11,069 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 04:08:11,069 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 04:08:11,069 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 04:08:11,069 INFO L82 PathProgramCache]: Analyzing trace with hash -895156504, now seen corresponding path program 1 times [2018-12-09 04:08:11,070 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-09 04:08:11,070 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-09 04:08:11,070 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 04:08:11,070 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 04:08:11,070 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 04:08:11,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 04:08:11,099 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-12-09 04:08:11,099 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 04:08:11,099 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d59cebcb-3b33-454f-abc8-e4d179ea1d81/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 [2018-12-09 04:08:11,109 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 04:08:11,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 04:08:11,130 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 04:08:11,147 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-12-09 04:08:11,172 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-09 04:08:11,172 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2018-12-09 04:08:11,172 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-12-09 04:08:11,173 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-12-09 04:08:11,173 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-12-09 04:08:11,173 INFO L87 Difference]: Start difference. First operand 28 states and 35 transitions. Second operand 5 states. [2018-12-09 04:08:11,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 04:08:11,213 INFO L93 Difference]: Finished difference Result 52 states and 77 transitions. [2018-12-09 04:08:11,213 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-12-09 04:08:11,213 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 22 [2018-12-09 04:08:11,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 04:08:11,214 INFO L225 Difference]: With dead ends: 52 [2018-12-09 04:08:11,214 INFO L226 Difference]: Without dead ends: 30 [2018-12-09 04:08:11,215 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-12-09 04:08:11,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2018-12-09 04:08:11,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2018-12-09 04:08:11,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2018-12-09 04:08:11,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 39 transitions. [2018-12-09 04:08:11,219 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 39 transitions. Word has length 22 [2018-12-09 04:08:11,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 04:08:11,219 INFO L480 AbstractCegarLoop]: Abstraction has 30 states and 39 transitions. [2018-12-09 04:08:11,219 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-12-09 04:08:11,219 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 39 transitions. [2018-12-09 04:08:11,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2018-12-09 04:08:11,220 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 04:08:11,220 INFO L402 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 04:08:11,220 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 04:08:11,220 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 04:08:11,221 INFO L82 PathProgramCache]: Analyzing trace with hash 718507263, now seen corresponding path program 1 times [2018-12-09 04:08:11,221 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-09 04:08:11,221 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-09 04:08:11,221 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 04:08:11,221 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 04:08:11,221 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 04:08:11,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 04:08:11,276 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 2 proven. 13 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2018-12-09 04:08:11,276 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 04:08:11,276 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d59cebcb-3b33-454f-abc8-e4d179ea1d81/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 [2018-12-09 04:08:11,283 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 04:08:11,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 04:08:11,296 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 04:08:11,340 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 6 proven. 8 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2018-12-09 04:08:11,354 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-09 04:08:11,354 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 11 [2018-12-09 04:08:11,355 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-12-09 04:08:11,355 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-12-09 04:08:11,355 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2018-12-09 04:08:11,355 INFO L87 Difference]: Start difference. First operand 30 states and 39 transitions. Second operand 11 states. [2018-12-09 04:08:11,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 04:08:11,631 INFO L93 Difference]: Finished difference Result 87 states and 149 transitions. [2018-12-09 04:08:11,631 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-12-09 04:08:11,632 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 35 [2018-12-09 04:08:11,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 04:08:11,635 INFO L225 Difference]: With dead ends: 87 [2018-12-09 04:08:11,635 INFO L226 Difference]: Without dead ends: 79 [2018-12-09 04:08:11,636 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 42 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=123, Invalid=339, Unknown=0, NotChecked=0, Total=462 [2018-12-09 04:08:11,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2018-12-09 04:08:11,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 79. [2018-12-09 04:08:11,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2018-12-09 04:08:11,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 139 transitions. [2018-12-09 04:08:11,653 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 139 transitions. Word has length 35 [2018-12-09 04:08:11,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 04:08:11,654 INFO L480 AbstractCegarLoop]: Abstraction has 79 states and 139 transitions. [2018-12-09 04:08:11,654 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-12-09 04:08:11,654 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 139 transitions. [2018-12-09 04:08:11,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2018-12-09 04:08:11,658 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 04:08:11,658 INFO L402 BasicCegarLoop]: trace histogram [17, 17, 11, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 04:08:11,659 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 04:08:11,659 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 04:08:11,659 INFO L82 PathProgramCache]: Analyzing trace with hash -2091057537, now seen corresponding path program 2 times [2018-12-09 04:08:11,659 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-09 04:08:11,659 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-09 04:08:11,660 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 04:08:11,660 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 04:08:11,660 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 04:08:11,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 04:08:11,769 INFO L134 CoverageAnalysis]: Checked inductivity of 669 backedges. 139 proven. 141 refuted. 0 times theorem prover too weak. 389 trivial. 0 not checked. [2018-12-09 04:08:11,770 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 04:08:11,770 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d59cebcb-3b33-454f-abc8-e4d179ea1d81/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 [2018-12-09 04:08:11,776 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-12-09 04:08:11,808 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-12-09 04:08:11,808 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-09 04:08:11,812 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 04:08:11,917 INFO L134 CoverageAnalysis]: Checked inductivity of 669 backedges. 360 proven. 86 refuted. 0 times theorem prover too weak. 223 trivial. 0 not checked. [2018-12-09 04:08:11,931 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-09 04:08:11,931 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 12] total 19 [2018-12-09 04:08:11,931 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-12-09 04:08:11,932 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-12-09 04:08:11,932 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=297, Unknown=0, NotChecked=0, Total=342 [2018-12-09 04:08:11,932 INFO L87 Difference]: Start difference. First operand 79 states and 139 transitions. Second operand 19 states. [2018-12-09 04:08:12,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 04:08:12,692 INFO L93 Difference]: Finished difference Result 312 states and 965 transitions. [2018-12-09 04:08:12,692 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2018-12-09 04:08:12,692 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 122 [2018-12-09 04:08:12,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 04:08:12,694 INFO L225 Difference]: With dead ends: 312 [2018-12-09 04:08:12,694 INFO L226 Difference]: Without dead ends: 63 [2018-12-09 04:08:12,700 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 472 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=524, Invalid=1926, Unknown=0, NotChecked=0, Total=2450 [2018-12-09 04:08:12,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2018-12-09 04:08:12,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 60. [2018-12-09 04:08:12,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2018-12-09 04:08:12,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 78 transitions. [2018-12-09 04:08:12,709 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 78 transitions. Word has length 122 [2018-12-09 04:08:12,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 04:08:12,709 INFO L480 AbstractCegarLoop]: Abstraction has 60 states and 78 transitions. [2018-12-09 04:08:12,709 INFO L481 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-12-09 04:08:12,709 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 78 transitions. [2018-12-09 04:08:12,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2018-12-09 04:08:12,711 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 04:08:12,712 INFO L402 BasicCegarLoop]: trace histogram [15, 15, 9, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 04:08:12,712 INFO L423 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 04:08:12,712 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 04:08:12,712 INFO L82 PathProgramCache]: Analyzing trace with hash -2010206023, now seen corresponding path program 3 times [2018-12-09 04:08:12,712 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-09 04:08:12,712 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-09 04:08:12,713 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 04:08:12,713 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-09 04:08:12,713 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 04:08:12,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 04:08:12,827 INFO L134 CoverageAnalysis]: Checked inductivity of 508 backedges. 103 proven. 171 refuted. 0 times theorem prover too weak. 234 trivial. 0 not checked. [2018-12-09 04:08:12,827 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 04:08:12,827 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d59cebcb-3b33-454f-abc8-e4d179ea1d81/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 [2018-12-09 04:08:12,833 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-12-09 04:08:12,855 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2018-12-09 04:08:12,855 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-09 04:08:12,859 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 04:08:12,875 INFO L134 CoverageAnalysis]: Checked inductivity of 508 backedges. 190 proven. 71 refuted. 0 times theorem prover too weak. 247 trivial. 0 not checked. [2018-12-09 04:08:12,890 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-09 04:08:12,890 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12] total 13 [2018-12-09 04:08:12,890 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-12-09 04:08:12,890 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-12-09 04:08:12,890 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2018-12-09 04:08:12,891 INFO L87 Difference]: Start difference. First operand 60 states and 78 transitions. Second operand 13 states. [2018-12-09 04:08:13,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 04:08:13,128 INFO L93 Difference]: Finished difference Result 101 states and 124 transitions. [2018-12-09 04:08:13,128 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-12-09 04:08:13,128 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 108 [2018-12-09 04:08:13,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 04:08:13,129 INFO L225 Difference]: With dead ends: 101 [2018-12-09 04:08:13,129 INFO L226 Difference]: Without dead ends: 63 [2018-12-09 04:08:13,130 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 137 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=156, Invalid=656, Unknown=0, NotChecked=0, Total=812 [2018-12-09 04:08:13,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2018-12-09 04:08:13,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 60. [2018-12-09 04:08:13,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2018-12-09 04:08:13,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 76 transitions. [2018-12-09 04:08:13,134 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 76 transitions. Word has length 108 [2018-12-09 04:08:13,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 04:08:13,135 INFO L480 AbstractCegarLoop]: Abstraction has 60 states and 76 transitions. [2018-12-09 04:08:13,135 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-12-09 04:08:13,135 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 76 transitions. [2018-12-09 04:08:13,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2018-12-09 04:08:13,136 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 04:08:13,136 INFO L402 BasicCegarLoop]: trace histogram [19, 19, 11, 8, 7, 7, 7, 7, 7, 7, 7, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 04:08:13,136 INFO L423 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 04:08:13,136 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 04:08:13,136 INFO L82 PathProgramCache]: Analyzing trace with hash -1835077495, now seen corresponding path program 4 times [2018-12-09 04:08:13,136 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-09 04:08:13,136 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-09 04:08:13,137 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 04:08:13,137 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-09 04:08:13,137 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 04:08:13,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 04:08:13,228 INFO L134 CoverageAnalysis]: Checked inductivity of 835 backedges. 139 proven. 297 refuted. 0 times theorem prover too weak. 399 trivial. 0 not checked. [2018-12-09 04:08:13,228 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 04:08:13,228 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d59cebcb-3b33-454f-abc8-e4d179ea1d81/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 [2018-12-09 04:08:13,233 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-12-09 04:08:13,262 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-12-09 04:08:13,262 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-09 04:08:13,266 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 04:08:13,282 INFO L134 CoverageAnalysis]: Checked inductivity of 835 backedges. 475 proven. 114 refuted. 0 times theorem prover too weak. 246 trivial. 0 not checked. [2018-12-09 04:08:13,307 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-09 04:08:13,307 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 14 [2018-12-09 04:08:13,308 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-12-09 04:08:13,308 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-12-09 04:08:13,308 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2018-12-09 04:08:13,308 INFO L87 Difference]: Start difference. First operand 60 states and 76 transitions. Second operand 14 states. [2018-12-09 04:08:13,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 04:08:13,591 INFO L93 Difference]: Finished difference Result 111 states and 139 transitions. [2018-12-09 04:08:13,591 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2018-12-09 04:08:13,591 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 134 [2018-12-09 04:08:13,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 04:08:13,593 INFO L225 Difference]: With dead ends: 111 [2018-12-09 04:08:13,593 INFO L226 Difference]: Without dead ends: 73 [2018-12-09 04:08:13,594 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 200 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=203, Invalid=853, Unknown=0, NotChecked=0, Total=1056 [2018-12-09 04:08:13,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2018-12-09 04:08:13,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 65. [2018-12-09 04:08:13,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2018-12-09 04:08:13,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 84 transitions. [2018-12-09 04:08:13,601 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 84 transitions. Word has length 134 [2018-12-09 04:08:13,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 04:08:13,601 INFO L480 AbstractCegarLoop]: Abstraction has 65 states and 84 transitions. [2018-12-09 04:08:13,602 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-12-09 04:08:13,602 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 84 transitions. [2018-12-09 04:08:13,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2018-12-09 04:08:13,603 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 04:08:13,604 INFO L402 BasicCegarLoop]: trace histogram [23, 23, 13, 10, 9, 9, 9, 9, 9, 9, 9, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 04:08:13,604 INFO L423 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 04:08:13,604 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 04:08:13,604 INFO L82 PathProgramCache]: Analyzing trace with hash -1434361927, now seen corresponding path program 5 times [2018-12-09 04:08:13,604 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-09 04:08:13,604 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-09 04:08:13,605 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 04:08:13,605 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-09 04:08:13,605 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 04:08:13,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 04:08:13,787 INFO L134 CoverageAnalysis]: Checked inductivity of 1246 backedges. 421 proven. 286 refuted. 0 times theorem prover too weak. 539 trivial. 0 not checked. [2018-12-09 04:08:13,787 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 04:08:13,787 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d59cebcb-3b33-454f-abc8-e4d179ea1d81/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 [2018-12-09 04:08:13,795 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-12-09 04:08:13,833 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 13 check-sat command(s) [2018-12-09 04:08:13,833 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-09 04:08:13,838 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 04:08:13,869 INFO L134 CoverageAnalysis]: Checked inductivity of 1246 backedges. 421 proven. 286 refuted. 0 times theorem prover too weak. 539 trivial. 0 not checked. [2018-12-09 04:08:13,884 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-09 04:08:13,884 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 20 [2018-12-09 04:08:13,885 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-12-09 04:08:13,885 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-12-09 04:08:13,885 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=322, Unknown=0, NotChecked=0, Total=380 [2018-12-09 04:08:13,885 INFO L87 Difference]: Start difference. First operand 65 states and 84 transitions. Second operand 20 states. [2018-12-09 04:08:14,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 04:08:14,322 INFO L93 Difference]: Finished difference Result 133 states and 170 transitions. [2018-12-09 04:08:14,322 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2018-12-09 04:08:14,322 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 160 [2018-12-09 04:08:14,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 04:08:14,323 INFO L225 Difference]: With dead ends: 133 [2018-12-09 04:08:14,323 INFO L226 Difference]: Without dead ends: 93 [2018-12-09 04:08:14,324 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 223 GetRequests, 173 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 626 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=456, Invalid=2196, Unknown=0, NotChecked=0, Total=2652 [2018-12-09 04:08:14,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2018-12-09 04:08:14,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 75. [2018-12-09 04:08:14,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2018-12-09 04:08:14,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 99 transitions. [2018-12-09 04:08:14,330 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 99 transitions. Word has length 160 [2018-12-09 04:08:14,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 04:08:14,330 INFO L480 AbstractCegarLoop]: Abstraction has 75 states and 99 transitions. [2018-12-09 04:08:14,330 INFO L481 AbstractCegarLoop]: Interpolant automaton has 20 states. [2018-12-09 04:08:14,330 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 99 transitions. [2018-12-09 04:08:14,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2018-12-09 04:08:14,331 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 04:08:14,331 INFO L402 BasicCegarLoop]: trace histogram [25, 25, 14, 11, 10, 10, 10, 10, 10, 10, 10, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 04:08:14,331 INFO L423 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 04:08:14,331 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 04:08:14,332 INFO L82 PathProgramCache]: Analyzing trace with hash -66876812, now seen corresponding path program 6 times [2018-12-09 04:08:14,332 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-09 04:08:14,332 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-09 04:08:14,332 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 04:08:14,332 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-09 04:08:14,332 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 04:08:14,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 04:08:14,467 INFO L134 CoverageAnalysis]: Checked inductivity of 1483 backedges. 477 proven. 372 refuted. 0 times theorem prover too weak. 634 trivial. 0 not checked. [2018-12-09 04:08:14,467 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 04:08:14,467 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d59cebcb-3b33-454f-abc8-e4d179ea1d81/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 [2018-12-09 04:08:14,474 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-12-09 04:08:14,515 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 18 check-sat command(s) [2018-12-09 04:08:14,515 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-09 04:08:14,518 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 04:08:14,548 INFO L134 CoverageAnalysis]: Checked inductivity of 1483 backedges. 477 proven. 372 refuted. 0 times theorem prover too weak. 634 trivial. 0 not checked. [2018-12-09 04:08:14,563 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-09 04:08:14,564 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 21 [2018-12-09 04:08:14,564 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2018-12-09 04:08:14,564 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2018-12-09 04:08:14,564 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=356, Unknown=0, NotChecked=0, Total=420 [2018-12-09 04:08:14,564 INFO L87 Difference]: Start difference. First operand 75 states and 99 transitions. Second operand 21 states. [2018-12-09 04:08:15,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 04:08:15,039 INFO L93 Difference]: Finished difference Result 148 states and 193 transitions. [2018-12-09 04:08:15,039 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2018-12-09 04:08:15,039 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 173 [2018-12-09 04:08:15,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 04:08:15,040 INFO L225 Difference]: With dead ends: 148 [2018-12-09 04:08:15,040 INFO L226 Difference]: Without dead ends: 103 [2018-12-09 04:08:15,041 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 241 GetRequests, 187 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 750 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=536, Invalid=2544, Unknown=0, NotChecked=0, Total=3080 [2018-12-09 04:08:15,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2018-12-09 04:08:15,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 80. [2018-12-09 04:08:15,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2018-12-09 04:08:15,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 108 transitions. [2018-12-09 04:08:15,047 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 108 transitions. Word has length 173 [2018-12-09 04:08:15,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 04:08:15,048 INFO L480 AbstractCegarLoop]: Abstraction has 80 states and 108 transitions. [2018-12-09 04:08:15,048 INFO L481 AbstractCegarLoop]: Interpolant automaton has 21 states. [2018-12-09 04:08:15,048 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 108 transitions. [2018-12-09 04:08:15,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2018-12-09 04:08:15,049 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 04:08:15,049 INFO L402 BasicCegarLoop]: trace histogram [27, 27, 15, 12, 11, 11, 11, 11, 11, 11, 11, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 04:08:15,049 INFO L423 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 04:08:15,049 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 04:08:15,049 INFO L82 PathProgramCache]: Analyzing trace with hash -1028004289, now seen corresponding path program 7 times [2018-12-09 04:08:15,049 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-09 04:08:15,049 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-09 04:08:15,050 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 04:08:15,050 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-09 04:08:15,050 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 04:08:15,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 04:08:15,303 INFO L134 CoverageAnalysis]: Checked inductivity of 1741 backedges. 583 proven. 158 refuted. 0 times theorem prover too weak. 1000 trivial. 0 not checked. [2018-12-09 04:08:15,304 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 04:08:15,304 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d59cebcb-3b33-454f-abc8-e4d179ea1d81/bin-2019/uautomizer/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-09 04:08:15,310 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 04:08:15,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 04:08:15,341 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 04:08:15,394 INFO L134 CoverageAnalysis]: Checked inductivity of 1741 backedges. 583 proven. 158 refuted. 0 times theorem prover too weak. 1000 trivial. 0 not checked. [2018-12-09 04:08:15,409 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-09 04:08:15,409 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 23 [2018-12-09 04:08:15,409 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2018-12-09 04:08:15,409 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2018-12-09 04:08:15,410 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=463, Unknown=0, NotChecked=0, Total=506 [2018-12-09 04:08:15,410 INFO L87 Difference]: Start difference. First operand 80 states and 108 transitions. Second operand 23 states. [2018-12-09 04:08:15,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 04:08:15,979 INFO L93 Difference]: Finished difference Result 129 states and 170 transitions. [2018-12-09 04:08:15,979 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2018-12-09 04:08:15,979 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 186 [2018-12-09 04:08:15,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 04:08:15,981 INFO L225 Difference]: With dead ends: 129 [2018-12-09 04:08:15,981 INFO L226 Difference]: Without dead ends: 125 [2018-12-09 04:08:15,982 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 242 GetRequests, 192 SyntacticMatches, 7 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 225 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=147, Invalid=1833, Unknown=0, NotChecked=0, Total=1980 [2018-12-09 04:08:15,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2018-12-09 04:08:15,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 85. [2018-12-09 04:08:15,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2018-12-09 04:08:15,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 118 transitions. [2018-12-09 04:08:15,990 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 118 transitions. Word has length 186 [2018-12-09 04:08:15,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 04:08:15,991 INFO L480 AbstractCegarLoop]: Abstraction has 85 states and 118 transitions. [2018-12-09 04:08:15,991 INFO L481 AbstractCegarLoop]: Interpolant automaton has 23 states. [2018-12-09 04:08:15,991 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 118 transitions. [2018-12-09 04:08:15,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2018-12-09 04:08:15,992 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 04:08:15,992 INFO L402 BasicCegarLoop]: trace histogram [29, 29, 16, 13, 12, 12, 12, 12, 12, 12, 12, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 04:08:15,992 INFO L423 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 04:08:15,992 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 04:08:15,992 INFO L82 PathProgramCache]: Analyzing trace with hash -2090243986, now seen corresponding path program 8 times [2018-12-09 04:08:15,992 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-09 04:08:15,992 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-09 04:08:15,993 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 04:08:15,993 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 04:08:15,993 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 04:08:16,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 04:08:16,189 INFO L134 CoverageAnalysis]: Checked inductivity of 2020 backedges. 647 proven. 519 refuted. 0 times theorem prover too weak. 854 trivial. 0 not checked. [2018-12-09 04:08:16,189 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 04:08:16,189 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d59cebcb-3b33-454f-abc8-e4d179ea1d81/bin-2019/uautomizer/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-09 04:08:16,196 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-12-09 04:08:16,229 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-12-09 04:08:16,229 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-09 04:08:16,232 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 04:08:16,262 INFO L134 CoverageAnalysis]: Checked inductivity of 2020 backedges. 647 proven. 519 refuted. 0 times theorem prover too weak. 854 trivial. 0 not checked. [2018-12-09 04:08:16,277 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-09 04:08:16,277 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 23 [2018-12-09 04:08:16,278 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2018-12-09 04:08:16,278 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2018-12-09 04:08:16,278 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=427, Unknown=0, NotChecked=0, Total=506 [2018-12-09 04:08:16,278 INFO L87 Difference]: Start difference. First operand 85 states and 118 transitions. Second operand 23 states. [2018-12-09 04:08:16,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 04:08:16,715 INFO L93 Difference]: Finished difference Result 216 states and 284 transitions. [2018-12-09 04:08:16,715 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2018-12-09 04:08:16,715 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 199 [2018-12-09 04:08:16,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 04:08:16,716 INFO L225 Difference]: With dead ends: 216 [2018-12-09 04:08:16,716 INFO L226 Difference]: Without dead ends: 121 [2018-12-09 04:08:16,717 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 262 GetRequests, 215 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 436 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=368, Invalid=1984, Unknown=0, NotChecked=0, Total=2352 [2018-12-09 04:08:16,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2018-12-09 04:08:16,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 85. [2018-12-09 04:08:16,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2018-12-09 04:08:16,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 104 transitions. [2018-12-09 04:08:16,726 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 104 transitions. Word has length 199 [2018-12-09 04:08:16,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 04:08:16,726 INFO L480 AbstractCegarLoop]: Abstraction has 85 states and 104 transitions. [2018-12-09 04:08:16,726 INFO L481 AbstractCegarLoop]: Interpolant automaton has 23 states. [2018-12-09 04:08:16,726 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 104 transitions. [2018-12-09 04:08:16,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2018-12-09 04:08:16,728 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 04:08:16,728 INFO L402 BasicCegarLoop]: trace histogram [31, 31, 17, 14, 13, 13, 13, 13, 13, 13, 13, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 04:08:16,728 INFO L423 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 04:08:16,728 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 04:08:16,728 INFO L82 PathProgramCache]: Analyzing trace with hash 469178039, now seen corresponding path program 9 times [2018-12-09 04:08:16,728 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-09 04:08:16,728 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-09 04:08:16,729 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 04:08:16,729 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-09 04:08:16,729 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 04:08:16,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 04:08:16,849 INFO L134 CoverageAnalysis]: Checked inductivity of 2320 backedges. 258 proven. 785 refuted. 0 times theorem prover too weak. 1277 trivial. 0 not checked. [2018-12-09 04:08:16,849 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 04:08:16,849 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d59cebcb-3b33-454f-abc8-e4d179ea1d81/bin-2019/uautomizer/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-09 04:08:16,856 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-12-09 04:08:16,926 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 22 check-sat command(s) [2018-12-09 04:08:16,926 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-09 04:08:16,930 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 04:08:16,954 INFO L134 CoverageAnalysis]: Checked inductivity of 2320 backedges. 1340 proven. 196 refuted. 0 times theorem prover too weak. 784 trivial. 0 not checked. [2018-12-09 04:08:16,979 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-09 04:08:16,979 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 16 [2018-12-09 04:08:16,980 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-12-09 04:08:16,980 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-12-09 04:08:16,980 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2018-12-09 04:08:16,980 INFO L87 Difference]: Start difference. First operand 85 states and 104 transitions. Second operand 16 states. [2018-12-09 04:08:17,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 04:08:17,220 INFO L93 Difference]: Finished difference Result 154 states and 184 transitions. [2018-12-09 04:08:17,221 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-12-09 04:08:17,221 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 212 [2018-12-09 04:08:17,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 04:08:17,221 INFO L225 Difference]: With dead ends: 154 [2018-12-09 04:08:17,221 INFO L226 Difference]: Without dead ends: 96 [2018-12-09 04:08:17,222 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 251 GetRequests, 221 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 143 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=173, Invalid=819, Unknown=0, NotChecked=0, Total=992 [2018-12-09 04:08:17,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2018-12-09 04:08:17,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 85. [2018-12-09 04:08:17,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2018-12-09 04:08:17,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 101 transitions. [2018-12-09 04:08:17,226 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 101 transitions. Word has length 212 [2018-12-09 04:08:17,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 04:08:17,226 INFO L480 AbstractCegarLoop]: Abstraction has 85 states and 101 transitions. [2018-12-09 04:08:17,226 INFO L481 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-12-09 04:08:17,226 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 101 transitions. [2018-12-09 04:08:17,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 298 [2018-12-09 04:08:17,227 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 04:08:17,227 INFO L402 BasicCegarLoop]: trace histogram [44, 44, 24, 20, 19, 19, 19, 19, 19, 19, 19, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 04:08:17,227 INFO L423 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 04:08:17,228 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 04:08:17,228 INFO L82 PathProgramCache]: Analyzing trace with hash 1106544965, now seen corresponding path program 10 times [2018-12-09 04:08:17,228 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-09 04:08:17,228 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-09 04:08:17,228 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 04:08:17,228 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-09 04:08:17,228 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 04:08:17,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 04:08:17,324 INFO L134 CoverageAnalysis]: Checked inductivity of 4764 backedges. 239 proven. 542 refuted. 0 times theorem prover too weak. 3983 trivial. 0 not checked. [2018-12-09 04:08:17,325 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 04:08:17,325 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d59cebcb-3b33-454f-abc8-e4d179ea1d81/bin-2019/uautomizer/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-09 04:08:17,330 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-12-09 04:08:17,378 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-12-09 04:08:17,378 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-09 04:08:17,382 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 04:08:17,408 INFO L134 CoverageAnalysis]: Checked inductivity of 4764 backedges. 239 proven. 542 refuted. 0 times theorem prover too weak. 3983 trivial. 0 not checked. [2018-12-09 04:08:17,423 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-09 04:08:17,424 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2018-12-09 04:08:17,424 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-12-09 04:08:17,424 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-12-09 04:08:17,424 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-12-09 04:08:17,424 INFO L87 Difference]: Start difference. First operand 85 states and 101 transitions. Second operand 8 states. [2018-12-09 04:08:17,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 04:08:17,475 INFO L93 Difference]: Finished difference Result 88 states and 104 transitions. [2018-12-09 04:08:17,475 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-12-09 04:08:17,475 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 297 [2018-12-09 04:08:17,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 04:08:17,476 INFO L225 Difference]: With dead ends: 88 [2018-12-09 04:08:17,476 INFO L226 Difference]: Without dead ends: 0 [2018-12-09 04:08:17,477 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 311 GetRequests, 301 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2018-12-09 04:08:17,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-12-09 04:08:17,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-12-09 04:08:17,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-12-09 04:08:17,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-12-09 04:08:17,477 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 297 [2018-12-09 04:08:17,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 04:08:17,478 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-12-09 04:08:17,478 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-12-09 04:08:17,478 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-12-09 04:08:17,478 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-12-09 04:08:17,482 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-12-09 04:08:17,559 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 04:08:17,564 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 04:08:17,600 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 04:08:17,605 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 04:08:17,625 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 04:08:17,685 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 04:08:17,687 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 04:08:17,723 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 04:08:17,753 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 04:08:17,754 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 04:08:17,757 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 04:08:17,758 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 04:08:17,796 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 04:08:17,796 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 04:08:17,799 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 04:08:17,800 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 04:08:17,817 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 04:08:17,883 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 04:08:17,885 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-09 04:08:18,830 WARN L180 SmtUtils]: Spent 850.00 ms on a formula simplification. DAG size of input: 176 DAG size of output: 64 [2018-12-09 04:08:18,894 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2018-12-09 04:08:18,894 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-12-09 04:08:18,894 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-12-09 04:08:18,894 INFO L451 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-12-09 04:08:18,895 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-12-09 04:08:18,895 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-12-09 04:08:18,895 INFO L448 ceAbstractionStarter]: For program point ackermannEXIT(lines 14 22) no Hoare annotation was computed. [2018-12-09 04:08:18,895 INFO L451 ceAbstractionStarter]: At program point ackermannENTRY(lines 14 22) the Hoare annotation is: true [2018-12-09 04:08:18,895 INFO L444 ceAbstractionStarter]: At program point L21(line 21) the Hoare annotation is: (and (= |ackermann_#in~m| ackermann_~m) (<= ackermann_~n |ackermann_#in~n|) (<= |ackermann_#in~n| ackermann_~n) (or (< |ackermann_#in~m| 0) (< 0 |ackermann_#in~m|))) [2018-12-09 04:08:18,895 INFO L448 ceAbstractionStarter]: For program point L21-1(line 21) no Hoare annotation was computed. [2018-12-09 04:08:18,895 INFO L444 ceAbstractionStarter]: At program point L19(line 19) the Hoare annotation is: (and (<= |ackermann_#in~n| 0) (= |ackermann_#in~m| ackermann_~m) (<= ackermann_~n |ackermann_#in~n|) (<= |ackermann_#in~n| ackermann_~n) (or (< |ackermann_#in~m| 0) (< 0 |ackermann_#in~m|)) (<= 0 |ackermann_#in~n|)) [2018-12-09 04:08:18,895 INFO L444 ceAbstractionStarter]: At program point L21-2(line 21) the Hoare annotation is: (let ((.cse14 (<= 2 |ackermann_#in~m|)) (.cse10 (<= 3 |ackermann_#in~n|)) (.cse0 (<= 2 |ackermann_#in~n|)) (.cse8 (<= |ackermann_#t~ret1| 3)) (.cse23 (<= 1 |ackermann_#in~m|)) (.cse7 (<= |ackermann_#in~n| 1)) (.cse22 (<= 3 |ackermann_#t~ret1|)) (.cse19 (= ackermann_~m |ackermann_#in~m|)) (.cse18 (<= |ackermann_#in~n| ackermann_~n)) (.cse2 (<= ackermann_~n |ackermann_#in~n|)) (.cse20 (<= |ackermann_#in~n| 4)) (.cse3 (<= |ackermann_#t~ret1| 5)) (.cse21 (<= 4 |ackermann_#in~n|)) (.cse5 (<= |ackermann_#in~m| 1))) (let ((.cse4 (and .cse2 .cse20 .cse3 .cse21 .cse5)) (.cse11 (<= 6 |ackermann_#t~ret1|)) (.cse15 (and .cse22 .cse19 (<= |ackermann_#in~n| 2) .cse18)) (.cse17 (and .cse23 .cse19 .cse18 .cse7 .cse5 (<= 2 |ackermann_#t~ret1|))) (.cse13 (<= 5 |ackermann_#t~ret1|)) (.cse6 (<= 6 |ackermann_#in~n|)) (.cse9 (and .cse0 .cse23 .cse2 .cse5 .cse8)) (.cse12 (and .cse2 .cse10 .cse5 (<= |ackermann_#t~ret1| 4))) (.cse16 (and .cse22 .cse19 .cse18 .cse14))) (and (let ((.cse1 (and .cse13 .cse14))) (or (and .cse0 .cse1 .cse2 .cse3) .cse4 (and .cse5 .cse6) (and .cse2 (<= 1 |ackermann_#in~n|) .cse7 .cse8) .cse9 (and .cse10 (and .cse1 .cse2)) (and .cse5 .cse11) .cse12 (<= 3 |ackermann_#in~m|))) (< 0 |ackermann_#in~m|) (or (<= 5 |ackermann_#in~n|) .cse4 .cse15 .cse12 .cse16 .cse17) (or (and .cse2 .cse11 (= |ackermann_#in~m| ackermann_~m) .cse18 (<= |ackermann_#t~ret1| 6)) .cse15 (and .cse13 .cse19 .cse18 .cse20) (and (<= 4 |ackermann_#t~ret1|) .cse19 (<= |ackermann_#in~n| 3) .cse18) .cse16 .cse17 (and .cse13 .cse19 .cse2 .cse18 .cse6)) (or .cse21 (<= |ackermann_#t~ret1| 2) .cse9 .cse12 .cse16)))) [2018-12-09 04:08:18,895 INFO L448 ceAbstractionStarter]: For program point L18(lines 18 20) no Hoare annotation was computed. [2018-12-09 04:08:18,895 INFO L448 ceAbstractionStarter]: For program point L19-1(line 19) no Hoare annotation was computed. [2018-12-09 04:08:18,895 INFO L448 ceAbstractionStarter]: For program point L21-3(line 21) no Hoare annotation was computed. [2018-12-09 04:08:18,895 INFO L448 ceAbstractionStarter]: For program point L15(lines 15 17) no Hoare annotation was computed. [2018-12-09 04:08:18,895 INFO L448 ceAbstractionStarter]: For program point ackermannFINAL(lines 14 22) no Hoare annotation was computed. [2018-12-09 04:08:18,895 INFO L448 ceAbstractionStarter]: For program point L33(lines 33 38) no Hoare annotation was computed. [2018-12-09 04:08:18,895 INFO L451 ceAbstractionStarter]: At program point mainENTRY(lines 25 45) the Hoare annotation is: true [2018-12-09 04:08:18,895 INFO L448 ceAbstractionStarter]: For program point L27(lines 27 31) no Hoare annotation was computed. [2018-12-09 04:08:18,896 INFO L448 ceAbstractionStarter]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 43) no Hoare annotation was computed. [2018-12-09 04:08:18,896 INFO L448 ceAbstractionStarter]: For program point mainEXIT(lines 25 45) no Hoare annotation was computed. [2018-12-09 04:08:18,896 INFO L448 ceAbstractionStarter]: For program point mainFINAL(lines 25 45) no Hoare annotation was computed. [2018-12-09 04:08:18,896 INFO L448 ceAbstractionStarter]: For program point L43(line 43) no Hoare annotation was computed. [2018-12-09 04:08:18,896 INFO L448 ceAbstractionStarter]: For program point L40(lines 40 44) no Hoare annotation was computed. [2018-12-09 04:08:18,896 INFO L451 ceAbstractionStarter]: At program point L39(line 39) the Hoare annotation is: true [2018-12-09 04:08:18,896 INFO L448 ceAbstractionStarter]: For program point L39-1(line 39) no Hoare annotation was computed. [2018-12-09 04:08:18,897 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 04:08:18 BoogieIcfgContainer [2018-12-09 04:08:18,897 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-12-09 04:08:18,898 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-12-09 04:08:18,898 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-12-09 04:08:18,898 INFO L276 PluginConnector]: Witness Printer initialized [2018-12-09 04:08:18,898 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 04:08:10" (3/4) ... [2018-12-09 04:08:18,901 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-12-09 04:08:18,906 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-12-09 04:08:18,907 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ackermann [2018-12-09 04:08:18,907 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-12-09 04:08:18,910 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2018-12-09 04:08:18,910 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2018-12-09 04:08:18,910 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-12-09 04:08:18,937 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_d59cebcb-3b33-454f-abc8-e4d179ea1d81/bin-2019/uautomizer/witness.graphml [2018-12-09 04:08:18,937 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-12-09 04:08:18,937 INFO L168 Benchmark]: Toolchain (without parser) took 8468.45 ms. Allocated memory was 1.0 GB in the beginning and 1.4 GB in the end (delta: 399.0 MB). Free memory was 954.4 MB in the beginning and 1.2 GB in the end (delta: -271.9 MB). Peak memory consumption was 127.1 MB. Max. memory is 11.5 GB. [2018-12-09 04:08:18,938 INFO L168 Benchmark]: CDTParser took 0.10 ms. Allocated memory is still 1.0 GB. Free memory is still 979.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-09 04:08:18,938 INFO L168 Benchmark]: CACSL2BoogieTranslator took 123.87 ms. Allocated memory is still 1.0 GB. Free memory was 954.4 MB in the beginning and 943.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-12-09 04:08:18,938 INFO L168 Benchmark]: Boogie Procedure Inliner took 11.73 ms. Allocated memory is still 1.0 GB. Free memory is still 943.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-09 04:08:18,939 INFO L168 Benchmark]: Boogie Preprocessor took 10.40 ms. Allocated memory is still 1.0 GB. Free memory is still 943.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-09 04:08:18,939 INFO L168 Benchmark]: RCFGBuilder took 157.14 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 89.7 MB). Free memory was 943.6 MB in the beginning and 1.1 GB in the end (delta: -128.2 MB). Peak memory consumption was 15.8 MB. Max. memory is 11.5 GB. [2018-12-09 04:08:18,939 INFO L168 Benchmark]: TraceAbstraction took 8123.15 ms. Allocated memory was 1.1 GB in the beginning and 1.4 GB in the end (delta: 309.3 MB). Free memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: -167.4 MB). Peak memory consumption was 555.2 MB. Max. memory is 11.5 GB. [2018-12-09 04:08:18,940 INFO L168 Benchmark]: Witness Printer took 39.49 ms. Allocated memory is still 1.4 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 12.9 MB). Peak memory consumption was 12.9 MB. Max. memory is 11.5 GB. [2018-12-09 04:08:18,942 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10 ms. Allocated memory is still 1.0 GB. Free memory is still 979.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 123.87 ms. Allocated memory is still 1.0 GB. Free memory was 954.4 MB in the beginning and 943.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 11.73 ms. Allocated memory is still 1.0 GB. Free memory is still 943.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 10.40 ms. Allocated memory is still 1.0 GB. Free memory is still 943.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 157.14 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 89.7 MB). Free memory was 943.6 MB in the beginning and 1.1 GB in the end (delta: -128.2 MB). Peak memory consumption was 15.8 MB. Max. memory is 11.5 GB. * TraceAbstraction took 8123.15 ms. Allocated memory was 1.1 GB in the beginning and 1.4 GB in the end (delta: 309.3 MB). Free memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: -167.4 MB). Peak memory consumption was 555.2 MB. Max. memory is 11.5 GB. * Witness Printer took 39.49 ms. Allocated memory is still 1.4 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 12.9 MB). Peak memory consumption was 12.9 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 43]: 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 - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 27 locations, 1 error locations. SAFE Result, 8.0s OverallTime, 12 OverallIterations, 44 TraceHistogramMax, 3.9s AutomataDifference, 0.0s DeadEndRemovalTime, 1.4s HoareAnnotationTime, HoareTripleCheckerStatistics: 358 SDtfs, 255 SDslu, 2034 SDs, 0 SdLazy, 4924 SolverSat, 660 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2106 GetRequests, 1729 SyntacticMatches, 9 SemanticMatches, 368 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3051 ImplicationChecksByTransitivity, 2.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=85occurred in iteration=9, 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, 12 MinimizatonAttempts, 142 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 9 LocationsWithAnnotation, 485 PreInvPairs, 1363 NumberOfFragments, 395 HoareAnnotationTreeSize, 485 FomulaSimplifications, 136349 FormulaSimplificationTreeSizeReduction, 0.4s HoareSimplificationTime, 9 FomulaSimplificationsInter, 24462 FormulaSimplificationTreeSizeReductionInter, 0.9s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 1.5s InterpolantComputationTime, 3311 NumberOfCodeBlocks, 3207 NumberOfCodeBlocksAsserted, 84 NumberOfCheckSat, 3288 ConstructedInterpolants, 0 QuantifiedInterpolants, 1069598 SizeOfPredicates, 89 NumberOfNonLiveVariables, 4535 ConjunctsInSsa, 294 ConjunctsInUnsatCore, 23 InterpolantComputations, 1 PerfectInterpolantSequences, 25592/31230 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...