./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/psyco/psyco_abp_1_true-unreach-call_false-termination_true-no-overflow.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0cd3be1d Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_4608df79-fbc1-4ee9-9a34-11961c96e0e5/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_4608df79-fbc1-4ee9-9a34-11961c96e0e5/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_4608df79-fbc1-4ee9-9a34-11961c96e0e5/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_4608df79-fbc1-4ee9-9a34-11961c96e0e5/bin-2019/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/psyco/psyco_abp_1_true-unreach-call_false-termination_true-no-overflow.c -s /tmp/vcloud-vcloud-master/worker/working_dir_4608df79-fbc1-4ee9-9a34-11961c96e0e5/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_4608df79-fbc1-4ee9-9a34-11961c96e0e5/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 45f0d0ab6d17adbe7cd7f36bcd9ec097795f4c36 ......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-0cd3be1 [2018-11-28 12:05:41,342 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-28 12:05:41,344 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-28 12:05:41,352 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-28 12:05:41,352 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-28 12:05:41,353 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-28 12:05:41,353 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-28 12:05:41,354 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-28 12:05:41,355 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-28 12:05:41,355 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-28 12:05:41,356 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-28 12:05:41,356 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-28 12:05:41,356 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-28 12:05:41,357 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-28 12:05:41,357 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-28 12:05:41,358 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-28 12:05:41,358 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-28 12:05:41,360 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-28 12:05:41,361 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-28 12:05:41,362 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-28 12:05:41,362 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-28 12:05:41,363 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-28 12:05:41,365 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-28 12:05:41,365 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-28 12:05:41,365 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-28 12:05:41,366 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-28 12:05:41,366 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-28 12:05:41,367 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-28 12:05:41,367 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-28 12:05:41,368 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-28 12:05:41,368 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-28 12:05:41,369 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-28 12:05:41,369 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-28 12:05:41,369 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-28 12:05:41,370 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-28 12:05:41,370 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-28 12:05:41,370 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_4608df79-fbc1-4ee9-9a34-11961c96e0e5/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2018-11-28 12:05:41,378 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-28 12:05:41,378 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-28 12:05:41,378 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-28 12:05:41,379 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-11-28 12:05:41,379 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-28 12:05:41,379 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-28 12:05:41,379 INFO L133 SettingsManager]: * Use SBE=true [2018-11-28 12:05:41,380 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-28 12:05:41,380 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-28 12:05:41,380 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-28 12:05:41,380 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-28 12:05:41,380 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-28 12:05:41,380 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-28 12:05:41,381 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-28 12:05:41,381 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-28 12:05:41,381 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-28 12:05:41,381 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-28 12:05:41,381 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-28 12:05:41,381 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-28 12:05:41,382 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-28 12:05:41,382 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-28 12:05:41,382 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-28 12:05:41,382 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-28 12:05:41,382 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-28 12:05:41,382 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-28 12:05:41,383 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-28 12:05:41,383 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-28 12:05:41,383 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-28 12:05:41,383 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-28 12:05:41,383 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-28 12:05:41,383 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_4608df79-fbc1-4ee9-9a34-11961c96e0e5/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 -> 45f0d0ab6d17adbe7cd7f36bcd9ec097795f4c36 [2018-11-28 12:05:41,407 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-28 12:05:41,416 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-28 12:05:41,419 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-28 12:05:41,420 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-28 12:05:41,420 INFO L276 PluginConnector]: CDTParser initialized [2018-11-28 12:05:41,420 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_4608df79-fbc1-4ee9-9a34-11961c96e0e5/bin-2019/uautomizer/../../sv-benchmarks/c/psyco/psyco_abp_1_true-unreach-call_false-termination_true-no-overflow.c [2018-11-28 12:05:41,462 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_4608df79-fbc1-4ee9-9a34-11961c96e0e5/bin-2019/uautomizer/data/c974874e8/bc88ad95ffa04c7ba6807a96d14ff6ee/FLAGe4d84e518 [2018-11-28 12:05:41,910 INFO L307 CDTParser]: Found 1 translation units. [2018-11-28 12:05:41,911 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_4608df79-fbc1-4ee9-9a34-11961c96e0e5/sv-benchmarks/c/psyco/psyco_abp_1_true-unreach-call_false-termination_true-no-overflow.c [2018-11-28 12:05:41,919 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_4608df79-fbc1-4ee9-9a34-11961c96e0e5/bin-2019/uautomizer/data/c974874e8/bc88ad95ffa04c7ba6807a96d14ff6ee/FLAGe4d84e518 [2018-11-28 12:05:41,930 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_4608df79-fbc1-4ee9-9a34-11961c96e0e5/bin-2019/uautomizer/data/c974874e8/bc88ad95ffa04c7ba6807a96d14ff6ee [2018-11-28 12:05:41,932 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-28 12:05:41,933 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-28 12:05:41,934 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-28 12:05:41,934 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-28 12:05:41,937 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-28 12:05:41,938 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 12:05:41" (1/1) ... [2018-11-28 12:05:41,940 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7de80484 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:05:41, skipping insertion in model container [2018-11-28 12:05:41,940 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 12:05:41" (1/1) ... [2018-11-28 12:05:41,946 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-28 12:05:41,972 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-28 12:05:42,140 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-28 12:05:42,144 INFO L191 MainTranslator]: Completed pre-run [2018-11-28 12:05:42,194 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-28 12:05:42,249 INFO L195 MainTranslator]: Completed translation [2018-11-28 12:05:42,249 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:05:42 WrapperNode [2018-11-28 12:05:42,250 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-28 12:05:42,250 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-28 12:05:42,250 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-28 12:05:42,250 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-28 12:05:42,256 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:05:42" (1/1) ... [2018-11-28 12:05:42,264 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:05:42" (1/1) ... [2018-11-28 12:05:42,270 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-28 12:05:42,271 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-28 12:05:42,271 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-28 12:05:42,271 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-28 12:05:42,279 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:05:42" (1/1) ... [2018-11-28 12:05:42,279 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:05:42" (1/1) ... [2018-11-28 12:05:42,281 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:05:42" (1/1) ... [2018-11-28 12:05:42,281 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:05:42" (1/1) ... [2018-11-28 12:05:42,296 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:05:42" (1/1) ... [2018-11-28 12:05:42,305 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:05:42" (1/1) ... [2018-11-28 12:05:42,308 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:05:42" (1/1) ... [2018-11-28 12:05:42,312 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-28 12:05:42,312 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-28 12:05:42,312 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-28 12:05:42,312 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-28 12:05:42,313 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:05:42" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_4608df79-fbc1-4ee9-9a34-11961c96e0e5/bin-2019/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-28 12:05:42,354 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-28 12:05:42,355 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-28 12:05:42,355 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-28 12:05:42,355 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-28 12:05:42,355 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-28 12:05:42,355 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-28 12:05:42,896 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-28 12:05:42,896 INFO L280 CfgBuilder]: Removed 2 assue(true) statements. [2018-11-28 12:05:42,897 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 12:05:42 BoogieIcfgContainer [2018-11-28 12:05:42,897 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-28 12:05:42,897 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-28 12:05:42,897 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-28 12:05:42,899 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-28 12:05:42,899 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 12:05:41" (1/3) ... [2018-11-28 12:05:42,900 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@701fadad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 12:05:42, skipping insertion in model container [2018-11-28 12:05:42,900 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:05:42" (2/3) ... [2018-11-28 12:05:42,901 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@701fadad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 12:05:42, skipping insertion in model container [2018-11-28 12:05:42,901 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 12:05:42" (3/3) ... [2018-11-28 12:05:42,902 INFO L112 eAbstractionObserver]: Analyzing ICFG psyco_abp_1_true-unreach-call_false-termination_true-no-overflow.c [2018-11-28 12:05:42,908 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-28 12:05:42,914 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-28 12:05:42,923 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-28 12:05:42,944 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-28 12:05:42,945 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-28 12:05:42,945 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-28 12:05:42,945 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-28 12:05:42,945 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-28 12:05:42,945 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-28 12:05:42,945 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-28 12:05:42,946 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-28 12:05:42,946 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-28 12:05:42,960 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states. [2018-11-28 12:05:42,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-11-28 12:05:42,964 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 12:05:42,965 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 12:05:42,967 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 12:05:42,970 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 12:05:42,970 INFO L82 PathProgramCache]: Analyzing trace with hash 1483071650, now seen corresponding path program 1 times [2018-11-28 12:05:42,972 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 12:05:42,972 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 12:05:43,001 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:05:43,001 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 12:05:43,001 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:05:43,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 12:05:43,058 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 12:05:43,060 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 12:05:43,060 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-28 12:05:43,062 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-11-28 12:05:43,070 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-11-28 12:05:43,070 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-28 12:05:43,072 INFO L87 Difference]: Start difference. First operand 114 states. Second operand 2 states. [2018-11-28 12:05:43,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 12:05:43,095 INFO L93 Difference]: Finished difference Result 222 states and 422 transitions. [2018-11-28 12:05:43,095 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-11-28 12:05:43,096 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 13 [2018-11-28 12:05:43,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 12:05:43,105 INFO L225 Difference]: With dead ends: 222 [2018-11-28 12:05:43,105 INFO L226 Difference]: Without dead ends: 104 [2018-11-28 12:05:43,108 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-28 12:05:43,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2018-11-28 12:05:43,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 104. [2018-11-28 12:05:43,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104 states. [2018-11-28 12:05:43,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 169 transitions. [2018-11-28 12:05:43,136 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 169 transitions. Word has length 13 [2018-11-28 12:05:43,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 12:05:43,136 INFO L480 AbstractCegarLoop]: Abstraction has 104 states and 169 transitions. [2018-11-28 12:05:43,136 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-11-28 12:05:43,136 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 169 transitions. [2018-11-28 12:05:43,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-11-28 12:05:43,137 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 12:05:43,137 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 12:05:43,137 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 12:05:43,137 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 12:05:43,137 INFO L82 PathProgramCache]: Analyzing trace with hash -736931587, now seen corresponding path program 1 times [2018-11-28 12:05:43,137 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 12:05:43,138 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 12:05:43,139 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:05:43,139 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 12:05:43,139 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:05:43,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 12:05:43,175 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 12:05:43,175 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 12:05:43,175 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-28 12:05:43,177 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-28 12:05:43,177 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-28 12:05:43,177 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-28 12:05:43,177 INFO L87 Difference]: Start difference. First operand 104 states and 169 transitions. Second operand 3 states. [2018-11-28 12:05:43,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 12:05:43,236 INFO L93 Difference]: Finished difference Result 205 states and 336 transitions. [2018-11-28 12:05:43,237 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-28 12:05:43,237 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 14 [2018-11-28 12:05:43,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 12:05:43,238 INFO L225 Difference]: With dead ends: 205 [2018-11-28 12:05:43,238 INFO L226 Difference]: Without dead ends: 107 [2018-11-28 12:05:43,239 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-28 12:05:43,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2018-11-28 12:05:43,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 107. [2018-11-28 12:05:43,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2018-11-28 12:05:43,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 172 transitions. [2018-11-28 12:05:43,249 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 172 transitions. Word has length 14 [2018-11-28 12:05:43,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 12:05:43,249 INFO L480 AbstractCegarLoop]: Abstraction has 107 states and 172 transitions. [2018-11-28 12:05:43,249 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-28 12:05:43,249 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 172 transitions. [2018-11-28 12:05:43,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-11-28 12:05:43,250 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 12:05:43,250 INFO L402 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 12:05:43,250 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 12:05:43,250 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 12:05:43,250 INFO L82 PathProgramCache]: Analyzing trace with hash 1504395429, now seen corresponding path program 1 times [2018-11-28 12:05:43,250 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 12:05:43,251 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 12:05:43,251 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:05:43,251 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 12:05:43,251 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:05:43,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 12:05:43,735 WARN L180 SmtUtils]: Spent 255.00 ms on a formula simplification. DAG size of input: 183 DAG size of output: 39 [2018-11-28 12:05:43,738 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 12:05:43,738 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 12:05:43,738 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-28 12:05:43,738 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-28 12:05:43,739 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-28 12:05:43,739 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-28 12:05:43,739 INFO L87 Difference]: Start difference. First operand 107 states and 172 transitions. Second operand 4 states. [2018-11-28 12:05:43,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 12:05:43,933 INFO L93 Difference]: Finished difference Result 209 states and 338 transitions. [2018-11-28 12:05:43,934 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-28 12:05:43,934 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 19 [2018-11-28 12:05:43,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 12:05:43,935 INFO L225 Difference]: With dead ends: 209 [2018-11-28 12:05:43,935 INFO L226 Difference]: Without dead ends: 190 [2018-11-28 12:05:43,936 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-28 12:05:43,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2018-11-28 12:05:43,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 176. [2018-11-28 12:05:43,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 176 states. [2018-11-28 12:05:43,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 285 transitions. [2018-11-28 12:05:43,948 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 285 transitions. Word has length 19 [2018-11-28 12:05:43,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 12:05:43,949 INFO L480 AbstractCegarLoop]: Abstraction has 176 states and 285 transitions. [2018-11-28 12:05:43,949 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-28 12:05:43,949 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 285 transitions. [2018-11-28 12:05:43,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-11-28 12:05:43,950 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 12:05:43,950 INFO L402 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 12:05:43,950 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 12:05:43,951 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 12:05:43,951 INFO L82 PathProgramCache]: Analyzing trace with hash 2142865338, now seen corresponding path program 1 times [2018-11-28 12:05:43,951 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 12:05:43,951 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 12:05:43,952 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:05:43,952 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 12:05:43,952 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:05:43,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 12:05:43,998 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 12:05:43,998 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 12:05:43,998 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-28 12:05:43,999 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-28 12:05:43,999 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-28 12:05:43,999 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-28 12:05:43,999 INFO L87 Difference]: Start difference. First operand 176 states and 285 transitions. Second operand 3 states. [2018-11-28 12:05:44,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 12:05:44,035 INFO L93 Difference]: Finished difference Result 297 states and 481 transitions. [2018-11-28 12:05:44,035 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-28 12:05:44,035 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 20 [2018-11-28 12:05:44,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 12:05:44,036 INFO L225 Difference]: With dead ends: 297 [2018-11-28 12:05:44,037 INFO L226 Difference]: Without dead ends: 128 [2018-11-28 12:05:44,037 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-28 12:05:44,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2018-11-28 12:05:44,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 126. [2018-11-28 12:05:44,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 126 states. [2018-11-28 12:05:44,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 198 transitions. [2018-11-28 12:05:44,043 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 198 transitions. Word has length 20 [2018-11-28 12:05:44,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 12:05:44,043 INFO L480 AbstractCegarLoop]: Abstraction has 126 states and 198 transitions. [2018-11-28 12:05:44,044 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-28 12:05:44,044 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 198 transitions. [2018-11-28 12:05:44,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-11-28 12:05:44,044 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 12:05:44,044 INFO L402 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 12:05:44,045 INFO L423 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 12:05:44,045 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 12:05:44,045 INFO L82 PathProgramCache]: Analyzing trace with hash -2011475352, now seen corresponding path program 1 times [2018-11-28 12:05:44,045 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 12:05:44,045 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 12:05:44,045 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:05:44,046 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 12:05:44,046 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:05:44,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 12:05:44,085 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-11-28 12:05:44,085 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 12:05:44,085 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-28 12:05:44,086 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-28 12:05:44,086 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-28 12:05:44,086 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-28 12:05:44,086 INFO L87 Difference]: Start difference. First operand 126 states and 198 transitions. Second operand 3 states. [2018-11-28 12:05:44,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 12:05:44,118 INFO L93 Difference]: Finished difference Result 230 states and 362 transitions. [2018-11-28 12:05:44,118 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-28 12:05:44,118 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 25 [2018-11-28 12:05:44,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 12:05:44,119 INFO L225 Difference]: With dead ends: 230 [2018-11-28 12:05:44,119 INFO L226 Difference]: Without dead ends: 111 [2018-11-28 12:05:44,120 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-28 12:05:44,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2018-11-28 12:05:44,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 109. [2018-11-28 12:05:44,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2018-11-28 12:05:44,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 167 transitions. [2018-11-28 12:05:44,127 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 167 transitions. Word has length 25 [2018-11-28 12:05:44,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 12:05:44,127 INFO L480 AbstractCegarLoop]: Abstraction has 109 states and 167 transitions. [2018-11-28 12:05:44,127 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-28 12:05:44,127 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 167 transitions. [2018-11-28 12:05:44,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-11-28 12:05:44,129 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 12:05:44,129 INFO L402 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 12:05:44,129 INFO L423 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 12:05:44,129 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 12:05:44,130 INFO L82 PathProgramCache]: Analyzing trace with hash 1818456969, now seen corresponding path program 1 times [2018-11-28 12:05:44,130 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 12:05:44,130 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 12:05:44,130 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:05:44,131 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 12:05:44,131 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:05:44,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 12:05:44,205 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 12:05:44,205 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 12:05:44,205 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_4608df79-fbc1-4ee9-9a34-11961c96e0e5/bin-2019/uautomizer/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-28 12:05:44,226 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 12:05:44,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 12:05:44,258 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 12:05:44,281 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 12:05:44,296 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 12:05:44,296 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2018-11-28 12:05:44,297 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-28 12:05:44,297 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-28 12:05:44,297 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-28 12:05:44,297 INFO L87 Difference]: Start difference. First operand 109 states and 167 transitions. Second operand 4 states. [2018-11-28 12:05:44,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 12:05:44,394 INFO L93 Difference]: Finished difference Result 192 states and 299 transitions. [2018-11-28 12:05:44,394 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-28 12:05:44,394 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 27 [2018-11-28 12:05:44,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 12:05:44,395 INFO L225 Difference]: With dead ends: 192 [2018-11-28 12:05:44,395 INFO L226 Difference]: Without dead ends: 174 [2018-11-28 12:05:44,396 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 27 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-28 12:05:44,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2018-11-28 12:05:44,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 172. [2018-11-28 12:05:44,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 172 states. [2018-11-28 12:05:44,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 265 transitions. [2018-11-28 12:05:44,404 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 265 transitions. Word has length 27 [2018-11-28 12:05:44,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 12:05:44,404 INFO L480 AbstractCegarLoop]: Abstraction has 172 states and 265 transitions. [2018-11-28 12:05:44,404 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-28 12:05:44,404 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 265 transitions. [2018-11-28 12:05:44,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2018-11-28 12:05:44,405 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 12:05:44,405 INFO L402 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 12:05:44,405 INFO L423 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 12:05:44,406 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 12:05:44,406 INFO L82 PathProgramCache]: Analyzing trace with hash 549034740, now seen corresponding path program 1 times [2018-11-28 12:05:44,406 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 12:05:44,406 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 12:05:44,407 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:05:44,407 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 12:05:44,407 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:05:44,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 12:05:44,674 WARN L180 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 33 [2018-11-28 12:05:44,677 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 12:05:44,678 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 12:05:44,678 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_4608df79-fbc1-4ee9-9a34-11961c96e0e5/bin-2019/uautomizer/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-28 12:05:44,687 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 12:05:44,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 12:05:44,719 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 12:05:44,799 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 12:05:44,815 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 12:05:44,815 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2018-11-28 12:05:44,815 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-28 12:05:44,815 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-28 12:05:44,816 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-11-28 12:05:44,816 INFO L87 Difference]: Start difference. First operand 172 states and 265 transitions. Second operand 6 states. [2018-11-28 12:05:44,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 12:05:44,978 INFO L93 Difference]: Finished difference Result 230 states and 355 transitions. [2018-11-28 12:05:44,979 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-28 12:05:44,979 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 28 [2018-11-28 12:05:44,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 12:05:44,980 INFO L225 Difference]: With dead ends: 230 [2018-11-28 12:05:44,980 INFO L226 Difference]: Without dead ends: 226 [2018-11-28 12:05:44,980 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 26 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-11-28 12:05:44,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2018-11-28 12:05:44,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 217. [2018-11-28 12:05:44,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 217 states. [2018-11-28 12:05:44,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 339 transitions. [2018-11-28 12:05:44,987 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 339 transitions. Word has length 28 [2018-11-28 12:05:44,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 12:05:44,987 INFO L480 AbstractCegarLoop]: Abstraction has 217 states and 339 transitions. [2018-11-28 12:05:44,987 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-28 12:05:44,988 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 339 transitions. [2018-11-28 12:05:44,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-11-28 12:05:44,988 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 12:05:44,988 INFO L402 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 12:05:44,989 INFO L423 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 12:05:44,989 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 12:05:44,989 INFO L82 PathProgramCache]: Analyzing trace with hash -1113591962, now seen corresponding path program 1 times [2018-11-28 12:05:44,989 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 12:05:44,989 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 12:05:44,990 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:05:44,990 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 12:05:44,990 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:05:44,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 12:05:45,011 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-11-28 12:05:45,011 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 12:05:45,011 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-28 12:05:45,012 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-28 12:05:45,012 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-28 12:05:45,012 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-28 12:05:45,012 INFO L87 Difference]: Start difference. First operand 217 states and 339 transitions. Second operand 3 states. [2018-11-28 12:05:45,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 12:05:45,029 INFO L93 Difference]: Finished difference Result 391 states and 608 transitions. [2018-11-28 12:05:45,030 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-28 12:05:45,030 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 29 [2018-11-28 12:05:45,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 12:05:45,031 INFO L225 Difference]: With dead ends: 391 [2018-11-28 12:05:45,031 INFO L226 Difference]: Without dead ends: 202 [2018-11-28 12:05:45,031 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-28 12:05:45,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2018-11-28 12:05:45,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 200. [2018-11-28 12:05:45,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 200 states. [2018-11-28 12:05:45,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 301 transitions. [2018-11-28 12:05:45,035 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 301 transitions. Word has length 29 [2018-11-28 12:05:45,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 12:05:45,035 INFO L480 AbstractCegarLoop]: Abstraction has 200 states and 301 transitions. [2018-11-28 12:05:45,035 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-28 12:05:45,035 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 301 transitions. [2018-11-28 12:05:45,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2018-11-28 12:05:45,036 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 12:05:45,036 INFO L402 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 12:05:45,037 INFO L423 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 12:05:45,037 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 12:05:45,037 INFO L82 PathProgramCache]: Analyzing trace with hash 454582667, now seen corresponding path program 1 times [2018-11-28 12:05:45,037 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 12:05:45,037 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 12:05:45,038 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:05:45,038 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 12:05:45,038 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:05:45,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 12:05:45,219 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 12:05:45,220 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 12:05:45,220 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_4608df79-fbc1-4ee9-9a34-11961c96e0e5/bin-2019/uautomizer/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-28 12:05:45,233 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 12:05:45,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 12:05:45,258 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 12:05:45,276 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-11-28 12:05:45,292 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-28 12:05:45,293 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2018-11-28 12:05:45,293 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-28 12:05:45,293 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-28 12:05:45,293 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-11-28 12:05:45,293 INFO L87 Difference]: Start difference. First operand 200 states and 301 transitions. Second operand 6 states. [2018-11-28 12:05:45,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 12:05:45,403 INFO L93 Difference]: Finished difference Result 357 states and 542 transitions. [2018-11-28 12:05:45,403 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-28 12:05:45,403 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 31 [2018-11-28 12:05:45,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 12:05:45,404 INFO L225 Difference]: With dead ends: 357 [2018-11-28 12:05:45,404 INFO L226 Difference]: Without dead ends: 341 [2018-11-28 12:05:45,405 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2018-11-28 12:05:45,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 341 states. [2018-11-28 12:05:45,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 341 to 312. [2018-11-28 12:05:45,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 312 states. [2018-11-28 12:05:45,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 312 states to 312 states and 471 transitions. [2018-11-28 12:05:45,412 INFO L78 Accepts]: Start accepts. Automaton has 312 states and 471 transitions. Word has length 31 [2018-11-28 12:05:45,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 12:05:45,412 INFO L480 AbstractCegarLoop]: Abstraction has 312 states and 471 transitions. [2018-11-28 12:05:45,412 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-28 12:05:45,412 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states and 471 transitions. [2018-11-28 12:05:45,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2018-11-28 12:05:45,416 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 12:05:45,417 INFO L402 BasicCegarLoop]: trace histogram [4, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 12:05:45,417 INFO L423 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 12:05:45,417 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 12:05:45,417 INFO L82 PathProgramCache]: Analyzing trace with hash -1646630523, now seen corresponding path program 1 times [2018-11-28 12:05:45,417 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 12:05:45,417 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 12:05:45,418 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:05:45,418 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 12:05:45,418 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:05:45,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 12:05:45,440 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2018-11-28 12:05:45,440 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 12:05:45,440 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-28 12:05:45,441 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-28 12:05:45,441 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-28 12:05:45,441 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-28 12:05:45,441 INFO L87 Difference]: Start difference. First operand 312 states and 471 transitions. Second operand 3 states. [2018-11-28 12:05:45,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 12:05:45,461 INFO L93 Difference]: Finished difference Result 512 states and 778 transitions. [2018-11-28 12:05:45,463 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-28 12:05:45,463 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 37 [2018-11-28 12:05:45,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 12:05:45,464 INFO L225 Difference]: With dead ends: 512 [2018-11-28 12:05:45,465 INFO L226 Difference]: Without dead ends: 246 [2018-11-28 12:05:45,465 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-28 12:05:45,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 246 states. [2018-11-28 12:05:45,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 246 to 244. [2018-11-28 12:05:45,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 244 states. [2018-11-28 12:05:45,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 364 transitions. [2018-11-28 12:05:45,470 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 364 transitions. Word has length 37 [2018-11-28 12:05:45,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 12:05:45,470 INFO L480 AbstractCegarLoop]: Abstraction has 244 states and 364 transitions. [2018-11-28 12:05:45,470 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-28 12:05:45,470 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 364 transitions. [2018-11-28 12:05:45,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2018-11-28 12:05:45,471 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 12:05:45,471 INFO L402 BasicCegarLoop]: trace histogram [4, 3, 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, 1, 1, 1, 1, 1, 1] [2018-11-28 12:05:45,471 INFO L423 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 12:05:45,471 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 12:05:45,471 INFO L82 PathProgramCache]: Analyzing trace with hash 939353414, now seen corresponding path program 1 times [2018-11-28 12:05:45,471 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 12:05:45,471 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 12:05:45,472 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:05:45,472 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 12:05:45,472 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:05:45,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 12:05:45,632 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 6 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 12:05:45,633 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 12:05:45,633 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_4608df79-fbc1-4ee9-9a34-11961c96e0e5/bin-2019/uautomizer/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-28 12:05:45,639 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 12:05:45,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 12:05:45,670 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 12:05:45,725 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 6 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 12:05:45,740 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 12:05:45,740 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2018-11-28 12:05:45,740 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-11-28 12:05:45,741 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-11-28 12:05:45,741 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2018-11-28 12:05:45,741 INFO L87 Difference]: Start difference. First operand 244 states and 364 transitions. Second operand 8 states. [2018-11-28 12:05:45,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 12:05:45,830 INFO L93 Difference]: Finished difference Result 254 states and 373 transitions. [2018-11-28 12:05:45,830 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-28 12:05:45,830 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 40 [2018-11-28 12:05:45,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 12:05:45,831 INFO L225 Difference]: With dead ends: 254 [2018-11-28 12:05:45,831 INFO L226 Difference]: Without dead ends: 252 [2018-11-28 12:05:45,832 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 37 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2018-11-28 12:05:45,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 252 states. [2018-11-28 12:05:45,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 252 to 245. [2018-11-28 12:05:45,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 245 states. [2018-11-28 12:05:45,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 245 states to 245 states and 365 transitions. [2018-11-28 12:05:45,836 INFO L78 Accepts]: Start accepts. Automaton has 245 states and 365 transitions. Word has length 40 [2018-11-28 12:05:45,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 12:05:45,837 INFO L480 AbstractCegarLoop]: Abstraction has 245 states and 365 transitions. [2018-11-28 12:05:45,837 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-11-28 12:05:45,837 INFO L276 IsEmpty]: Start isEmpty. Operand 245 states and 365 transitions. [2018-11-28 12:05:45,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2018-11-28 12:05:45,837 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 12:05:45,837 INFO L402 BasicCegarLoop]: trace histogram [4, 3, 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, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 12:05:45,838 INFO L423 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 12:05:45,838 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 12:05:45,838 INFO L82 PathProgramCache]: Analyzing trace with hash -819577482, now seen corresponding path program 1 times [2018-11-28 12:05:45,838 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 12:05:45,838 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 12:05:45,839 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:05:45,839 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 12:05:45,839 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:05:45,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 12:05:45,855 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2018-11-28 12:05:45,855 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 12:05:45,855 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-28 12:05:45,855 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-28 12:05:45,856 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-28 12:05:45,856 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-28 12:05:45,856 INFO L87 Difference]: Start difference. First operand 245 states and 365 transitions. Second operand 3 states. [2018-11-28 12:05:45,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 12:05:45,874 INFO L93 Difference]: Finished difference Result 428 states and 636 transitions. [2018-11-28 12:05:45,874 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-28 12:05:45,875 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 41 [2018-11-28 12:05:45,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 12:05:45,875 INFO L225 Difference]: With dead ends: 428 [2018-11-28 12:05:45,876 INFO L226 Difference]: Without dead ends: 229 [2018-11-28 12:05:45,876 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-28 12:05:45,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2018-11-28 12:05:45,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 227. [2018-11-28 12:05:45,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 227 states. [2018-11-28 12:05:45,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 328 transitions. [2018-11-28 12:05:45,881 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 328 transitions. Word has length 41 [2018-11-28 12:05:45,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 12:05:45,882 INFO L480 AbstractCegarLoop]: Abstraction has 227 states and 328 transitions. [2018-11-28 12:05:45,882 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-28 12:05:45,882 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 328 transitions. [2018-11-28 12:05:45,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2018-11-28 12:05:45,882 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 12:05:45,882 INFO L402 BasicCegarLoop]: trace histogram [5, 4, 3, 3, 2, 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, 1, 1, 1, 1, 1, 1] [2018-11-28 12:05:45,882 INFO L423 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 12:05:45,883 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 12:05:45,883 INFO L82 PathProgramCache]: Analyzing trace with hash 711556807, now seen corresponding path program 1 times [2018-11-28 12:05:45,883 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 12:05:45,883 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 12:05:45,883 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:05:45,884 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 12:05:45,884 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:05:45,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 12:05:45,909 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2018-11-28 12:05:45,909 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 12:05:45,909 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-28 12:05:45,909 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-28 12:05:45,910 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-28 12:05:45,910 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-28 12:05:45,910 INFO L87 Difference]: Start difference. First operand 227 states and 328 transitions. Second operand 3 states. [2018-11-28 12:05:45,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 12:05:45,931 INFO L93 Difference]: Finished difference Result 309 states and 446 transitions. [2018-11-28 12:05:45,931 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-28 12:05:45,931 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 50 [2018-11-28 12:05:45,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 12:05:45,932 INFO L225 Difference]: With dead ends: 309 [2018-11-28 12:05:45,932 INFO L226 Difference]: Without dead ends: 147 [2018-11-28 12:05:45,932 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-28 12:05:45,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2018-11-28 12:05:45,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 145. [2018-11-28 12:05:45,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145 states. [2018-11-28 12:05:45,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 203 transitions. [2018-11-28 12:05:45,936 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 203 transitions. Word has length 50 [2018-11-28 12:05:45,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 12:05:45,936 INFO L480 AbstractCegarLoop]: Abstraction has 145 states and 203 transitions. [2018-11-28 12:05:45,936 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-28 12:05:45,936 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 203 transitions. [2018-11-28 12:05:45,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2018-11-28 12:05:45,937 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 12:05:45,937 INFO L402 BasicCegarLoop]: trace histogram [5, 4, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 12:05:45,937 INFO L423 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 12:05:45,937 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 12:05:45,938 INFO L82 PathProgramCache]: Analyzing trace with hash -370372205, now seen corresponding path program 1 times [2018-11-28 12:05:45,938 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 12:05:45,938 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 12:05:45,938 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:05:45,938 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 12:05:45,938 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:05:45,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 12:05:46,003 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 8 proven. 20 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-28 12:05:46,003 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 12:05:46,003 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_4608df79-fbc1-4ee9-9a34-11961c96e0e5/bin-2019/uautomizer/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-28 12:05:46,021 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 12:05:46,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 12:05:46,053 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 12:05:46,097 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 8 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 12:05:46,112 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 12:05:46,112 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6] total 9 [2018-11-28 12:05:46,113 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-11-28 12:05:46,113 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-11-28 12:05:46,113 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2018-11-28 12:05:46,113 INFO L87 Difference]: Start difference. First operand 145 states and 203 transitions. Second operand 9 states. [2018-11-28 12:05:46,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 12:05:46,167 INFO L93 Difference]: Finished difference Result 188 states and 263 transitions. [2018-11-28 12:05:46,167 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-28 12:05:46,167 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 51 [2018-11-28 12:05:46,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 12:05:46,168 INFO L225 Difference]: With dead ends: 188 [2018-11-28 12:05:46,168 INFO L226 Difference]: Without dead ends: 184 [2018-11-28 12:05:46,169 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2018-11-28 12:05:46,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2018-11-28 12:05:46,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 181. [2018-11-28 12:05:46,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 181 states. [2018-11-28 12:05:46,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 254 transitions. [2018-11-28 12:05:46,174 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 254 transitions. Word has length 51 [2018-11-28 12:05:46,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 12:05:46,174 INFO L480 AbstractCegarLoop]: Abstraction has 181 states and 254 transitions. [2018-11-28 12:05:46,175 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-11-28 12:05:46,175 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 254 transitions. [2018-11-28 12:05:46,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2018-11-28 12:05:46,175 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 12:05:46,175 INFO L402 BasicCegarLoop]: trace histogram [6, 5, 3, 3, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 12:05:46,175 INFO L423 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 12:05:46,175 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 12:05:46,175 INFO L82 PathProgramCache]: Analyzing trace with hash -379328264, now seen corresponding path program 1 times [2018-11-28 12:05:46,176 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 12:05:46,176 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 12:05:46,176 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:05:46,176 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 12:05:46,176 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:05:46,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 12:05:50,562 WARN L180 SmtUtils]: Spent 4.19 s on a formula simplification. DAG size of input: 194 DAG size of output: 36 [2018-11-28 12:05:50,574 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 10 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 12:05:50,574 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 12:05:50,574 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_4608df79-fbc1-4ee9-9a34-11961c96e0e5/bin-2019/uautomizer/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-28 12:05:50,584 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 12:05:50,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 12:05:50,657 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 12:05:50,727 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 10 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 12:05:50,745 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 12:05:50,746 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 11 [2018-11-28 12:05:50,746 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-11-28 12:05:50,746 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-11-28 12:05:50,746 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2018-11-28 12:05:50,746 INFO L87 Difference]: Start difference. First operand 181 states and 254 transitions. Second operand 11 states. [2018-11-28 12:05:51,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 12:05:51,114 INFO L93 Difference]: Finished difference Result 187 states and 260 transitions. [2018-11-28 12:05:51,115 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-11-28 12:05:51,115 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 61 [2018-11-28 12:05:51,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 12:05:51,116 INFO L225 Difference]: With dead ends: 187 [2018-11-28 12:05:51,116 INFO L226 Difference]: Without dead ends: 185 [2018-11-28 12:05:51,117 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 59 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2018-11-28 12:05:51,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2018-11-28 12:05:51,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 182. [2018-11-28 12:05:51,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 182 states. [2018-11-28 12:05:51,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 255 transitions. [2018-11-28 12:05:51,126 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 255 transitions. Word has length 61 [2018-11-28 12:05:51,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 12:05:51,127 INFO L480 AbstractCegarLoop]: Abstraction has 182 states and 255 transitions. [2018-11-28 12:05:51,127 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-11-28 12:05:51,127 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 255 transitions. [2018-11-28 12:05:51,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2018-11-28 12:05:51,127 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 12:05:51,127 INFO L402 BasicCegarLoop]: trace histogram [7, 6, 4, 4, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 12:05:51,128 INFO L423 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 12:05:51,128 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 12:05:51,128 INFO L82 PathProgramCache]: Analyzing trace with hash 638427137, now seen corresponding path program 1 times [2018-11-28 12:05:51,128 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 12:05:51,128 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 12:05:51,129 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:05:51,129 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 12:05:51,129 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:05:51,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 12:05:51,495 WARN L180 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 33 [2018-11-28 12:05:51,510 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 12 proven. 65 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 12:05:51,511 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 12:05:51,511 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_4608df79-fbc1-4ee9-9a34-11961c96e0e5/bin-2019/uautomizer/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-28 12:05:51,525 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 12:05:51,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 12:05:51,585 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 12:05:51,643 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 12 proven. 65 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 12:05:51,668 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 12:05:51,669 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 9 [2018-11-28 12:05:51,669 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-11-28 12:05:51,669 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-11-28 12:05:51,669 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2018-11-28 12:05:51,669 INFO L87 Difference]: Start difference. First operand 182 states and 255 transitions. Second operand 9 states. [2018-11-28 12:05:51,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 12:05:51,821 INFO L93 Difference]: Finished difference Result 203 states and 284 transitions. [2018-11-28 12:05:51,822 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-28 12:05:51,822 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 70 [2018-11-28 12:05:51,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 12:05:51,823 INFO L225 Difference]: With dead ends: 203 [2018-11-28 12:05:51,823 INFO L226 Difference]: Without dead ends: 200 [2018-11-28 12:05:51,823 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 70 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2018-11-28 12:05:51,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2018-11-28 12:05:51,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 200. [2018-11-28 12:05:51,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 200 states. [2018-11-28 12:05:51,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 280 transitions. [2018-11-28 12:05:51,832 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 280 transitions. Word has length 70 [2018-11-28 12:05:51,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 12:05:51,832 INFO L480 AbstractCegarLoop]: Abstraction has 200 states and 280 transitions. [2018-11-28 12:05:51,832 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-11-28 12:05:51,834 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 280 transitions. [2018-11-28 12:05:51,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2018-11-28 12:05:51,834 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 12:05:51,834 INFO L402 BasicCegarLoop]: trace histogram [8, 7, 5, 5, 3, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 12:05:51,835 INFO L423 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 12:05:51,835 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 12:05:51,835 INFO L82 PathProgramCache]: Analyzing trace with hash -784011109, now seen corresponding path program 1 times [2018-11-28 12:05:51,835 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 12:05:51,835 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 12:05:51,835 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:05:51,836 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 12:05:51,836 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:05:51,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 12:05:51,968 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 14 proven. 81 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2018-11-28 12:05:51,968 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 12:05:51,968 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_4608df79-fbc1-4ee9-9a34-11961c96e0e5/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 [2018-11-28 12:05:51,977 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 12:05:52,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 12:05:52,039 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 12:05:52,087 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 14 proven. 81 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2018-11-28 12:05:52,112 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 12:05:52,113 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 7 [2018-11-28 12:05:52,113 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-28 12:05:52,114 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-28 12:05:52,114 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2018-11-28 12:05:52,114 INFO L87 Difference]: Start difference. First operand 200 states and 280 transitions. Second operand 7 states. [2018-11-28 12:05:52,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 12:05:52,186 INFO L93 Difference]: Finished difference Result 224 states and 311 transitions. [2018-11-28 12:05:52,186 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-28 12:05:52,186 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 79 [2018-11-28 12:05:52,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 12:05:52,188 INFO L225 Difference]: With dead ends: 224 [2018-11-28 12:05:52,188 INFO L226 Difference]: Without dead ends: 221 [2018-11-28 12:05:52,188 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 81 SyntacticMatches, 4 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2018-11-28 12:05:52,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2018-11-28 12:05:52,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 218. [2018-11-28 12:05:52,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 218 states. [2018-11-28 12:05:52,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 305 transitions. [2018-11-28 12:05:52,197 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 305 transitions. Word has length 79 [2018-11-28 12:05:52,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 12:05:52,197 INFO L480 AbstractCegarLoop]: Abstraction has 218 states and 305 transitions. [2018-11-28 12:05:52,197 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-28 12:05:52,197 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 305 transitions. [2018-11-28 12:05:52,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2018-11-28 12:05:52,198 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 12:05:52,198 INFO L402 BasicCegarLoop]: trace histogram [8, 7, 5, 5, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1] [2018-11-28 12:05:52,198 INFO L423 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 12:05:52,198 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 12:05:52,198 INFO L82 PathProgramCache]: Analyzing trace with hash -1961279789, now seen corresponding path program 1 times [2018-11-28 12:05:52,198 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 12:05:52,199 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 12:05:52,199 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:05:52,199 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 12:05:52,199 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:05:52,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 12:05:54,694 WARN L180 SmtUtils]: Spent 2.12 s on a formula simplification. DAG size of input: 133 DAG size of output: 40 [2018-11-28 12:05:54,713 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 14 proven. 99 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 12:05:54,713 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 12:05:54,713 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_4608df79-fbc1-4ee9-9a34-11961c96e0e5/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 [2018-11-28 12:05:54,720 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 12:05:54,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 12:05:54,774 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 12:05:54,896 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 14 proven. 99 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 12:05:54,911 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 12:05:54,911 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 11 [2018-11-28 12:05:54,911 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-11-28 12:05:54,911 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-11-28 12:05:54,912 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2018-11-28 12:05:54,912 INFO L87 Difference]: Start difference. First operand 218 states and 305 transitions. Second operand 11 states. [2018-11-28 12:05:55,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 12:05:55,015 INFO L93 Difference]: Finished difference Result 221 states and 308 transitions. [2018-11-28 12:05:55,015 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-11-28 12:05:55,015 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 82 [2018-11-28 12:05:55,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 12:05:55,016 INFO L225 Difference]: With dead ends: 221 [2018-11-28 12:05:55,016 INFO L226 Difference]: Without dead ends: 219 [2018-11-28 12:05:55,017 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 79 SyntacticMatches, 3 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2018-11-28 12:05:55,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2018-11-28 12:05:55,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 219. [2018-11-28 12:05:55,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 219 states. [2018-11-28 12:05:55,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 306 transitions. [2018-11-28 12:05:55,023 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 306 transitions. Word has length 82 [2018-11-28 12:05:55,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 12:05:55,023 INFO L480 AbstractCegarLoop]: Abstraction has 219 states and 306 transitions. [2018-11-28 12:05:55,023 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-11-28 12:05:55,024 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 306 transitions. [2018-11-28 12:05:55,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2018-11-28 12:05:55,024 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 12:05:55,024 INFO L402 BasicCegarLoop]: trace histogram [9, 8, 6, 6, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 12:05:55,025 INFO L423 AbstractCegarLoop]: === Iteration 19 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 12:05:55,025 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 12:05:55,025 INFO L82 PathProgramCache]: Analyzing trace with hash -101241370, now seen corresponding path program 1 times [2018-11-28 12:05:55,025 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 12:05:55,025 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 12:05:55,026 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:05:55,026 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 12:05:55,026 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:05:55,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 12:05:55,159 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 16 proven. 123 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2018-11-28 12:05:55,159 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 12:05:55,160 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_4608df79-fbc1-4ee9-9a34-11961c96e0e5/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 [2018-11-28 12:05:55,171 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 12:05:55,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 12:05:55,242 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 12:05:55,381 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 16 proven. 136 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 12:05:55,407 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 12:05:55,407 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 10] total 15 [2018-11-28 12:05:55,408 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-11-28 12:05:55,408 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-11-28 12:05:55,408 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2018-11-28 12:05:55,408 INFO L87 Difference]: Start difference. First operand 219 states and 306 transitions. Second operand 15 states. [2018-11-28 12:05:55,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 12:05:55,530 INFO L93 Difference]: Finished difference Result 262 states and 366 transitions. [2018-11-28 12:05:55,530 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-11-28 12:05:55,530 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 93 [2018-11-28 12:05:55,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 12:05:55,531 INFO L225 Difference]: With dead ends: 262 [2018-11-28 12:05:55,531 INFO L226 Difference]: Without dead ends: 258 [2018-11-28 12:05:55,532 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2018-11-28 12:05:55,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258 states. [2018-11-28 12:05:55,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258 to 255. [2018-11-28 12:05:55,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 255 states. [2018-11-28 12:05:55,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 357 transitions. [2018-11-28 12:05:55,540 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 357 transitions. Word has length 93 [2018-11-28 12:05:55,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 12:05:55,540 INFO L480 AbstractCegarLoop]: Abstraction has 255 states and 357 transitions. [2018-11-28 12:05:55,540 INFO L481 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-11-28 12:05:55,540 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 357 transitions. [2018-11-28 12:05:55,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2018-11-28 12:05:55,541 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 12:05:55,541 INFO L402 BasicCegarLoop]: trace histogram [10, 9, 6, 6, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 12:05:55,541 INFO L423 AbstractCegarLoop]: === Iteration 20 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 12:05:55,541 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 12:05:55,541 INFO L82 PathProgramCache]: Analyzing trace with hash -1744733813, now seen corresponding path program 2 times [2018-11-28 12:05:55,541 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 12:05:55,541 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 12:05:55,542 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:05:55,542 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 12:05:55,542 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:05:55,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 12:05:56,027 WARN L180 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 168 DAG size of output: 39 [2018-11-28 12:05:56,260 WARN L180 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 171 DAG size of output: 36 [2018-11-28 12:05:56,274 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 18 proven. 172 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 12:05:56,275 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 12:05:56,275 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_4608df79-fbc1-4ee9-9a34-11961c96e0e5/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 [2018-11-28 12:05:56,281 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-11-28 12:05:56,359 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-28 12:05:56,359 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-28 12:05:56,364 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 12:05:56,479 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 18 proven. 172 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 12:05:56,505 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 12:05:56,505 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 12] total 15 [2018-11-28 12:05:56,505 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-11-28 12:05:56,505 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-11-28 12:05:56,506 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210 [2018-11-28 12:05:56,506 INFO L87 Difference]: Start difference. First operand 255 states and 357 transitions. Second operand 15 states. [2018-11-28 12:05:56,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 12:05:56,959 INFO L93 Difference]: Finished difference Result 265 states and 367 transitions. [2018-11-28 12:05:56,959 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-11-28 12:05:56,959 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 103 [2018-11-28 12:05:56,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 12:05:56,960 INFO L225 Difference]: With dead ends: 265 [2018-11-28 12:05:56,960 INFO L226 Difference]: Without dead ends: 263 [2018-11-28 12:05:56,961 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 101 SyntacticMatches, 3 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=65, Invalid=441, Unknown=0, NotChecked=0, Total=506 [2018-11-28 12:05:56,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 263 states. [2018-11-28 12:05:56,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 263 to 256. [2018-11-28 12:05:56,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 256 states. [2018-11-28 12:05:56,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256 states to 256 states and 358 transitions. [2018-11-28 12:05:56,979 INFO L78 Accepts]: Start accepts. Automaton has 256 states and 358 transitions. Word has length 103 [2018-11-28 12:05:56,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 12:05:56,979 INFO L480 AbstractCegarLoop]: Abstraction has 256 states and 358 transitions. [2018-11-28 12:05:56,979 INFO L481 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-11-28 12:05:56,979 INFO L276 IsEmpty]: Start isEmpty. Operand 256 states and 358 transitions. [2018-11-28 12:05:56,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2018-11-28 12:05:56,980 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 12:05:56,980 INFO L402 BasicCegarLoop]: trace histogram [11, 10, 7, 7, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 12:05:56,981 INFO L423 AbstractCegarLoop]: === Iteration 21 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 12:05:56,981 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 12:05:56,981 INFO L82 PathProgramCache]: Analyzing trace with hash 769524942, now seen corresponding path program 2 times [2018-11-28 12:05:56,981 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 12:05:56,981 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 12:05:56,982 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:05:56,982 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 12:05:56,982 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:05:57,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 12:05:57,403 WARN L180 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 39 [2018-11-28 12:05:57,426 INFO L134 CoverageAnalysis]: Checked inductivity of 239 backedges. 20 proven. 203 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2018-11-28 12:05:57,427 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 12:05:57,427 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_4608df79-fbc1-4ee9-9a34-11961c96e0e5/bin-2019/uautomizer/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-28 12:05:57,436 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-11-28 12:05:57,498 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-28 12:05:57,498 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-28 12:05:57,501 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 12:05:57,614 INFO L134 CoverageAnalysis]: Checked inductivity of 239 backedges. 20 proven. 219 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 12:05:57,629 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 12:05:57,629 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 13] total 21 [2018-11-28 12:05:57,629 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2018-11-28 12:05:57,629 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2018-11-28 12:05:57,630 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=366, Unknown=0, NotChecked=0, Total=420 [2018-11-28 12:05:57,630 INFO L87 Difference]: Start difference. First operand 256 states and 358 transitions. Second operand 21 states. [2018-11-28 12:05:57,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 12:05:57,876 INFO L93 Difference]: Finished difference Result 277 states and 387 transitions. [2018-11-28 12:05:57,876 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-11-28 12:05:57,876 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 112 [2018-11-28 12:05:57,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 12:05:57,877 INFO L225 Difference]: With dead ends: 277 [2018-11-28 12:05:57,877 INFO L226 Difference]: Without dead ends: 274 [2018-11-28 12:05:57,877 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 107 SyntacticMatches, 2 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=59, Invalid=403, Unknown=0, NotChecked=0, Total=462 [2018-11-28 12:05:57,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 274 states. [2018-11-28 12:05:57,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 274 to 274. [2018-11-28 12:05:57,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 274 states. [2018-11-28 12:05:57,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 274 states to 274 states and 383 transitions. [2018-11-28 12:05:57,886 INFO L78 Accepts]: Start accepts. Automaton has 274 states and 383 transitions. Word has length 112 [2018-11-28 12:05:57,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 12:05:57,886 INFO L480 AbstractCegarLoop]: Abstraction has 274 states and 383 transitions. [2018-11-28 12:05:57,886 INFO L481 AbstractCegarLoop]: Interpolant automaton has 21 states. [2018-11-28 12:05:57,886 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states and 383 transitions. [2018-11-28 12:05:57,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2018-11-28 12:05:57,887 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 12:05:57,887 INFO L402 BasicCegarLoop]: trace histogram [12, 11, 8, 8, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 12:05:57,887 INFO L423 AbstractCegarLoop]: === Iteration 22 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 12:05:57,887 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 12:05:57,888 INFO L82 PathProgramCache]: Analyzing trace with hash -495672722, now seen corresponding path program 2 times [2018-11-28 12:05:57,888 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 12:05:57,888 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 12:05:57,888 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:05:57,888 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 12:05:57,888 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:05:57,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 12:05:58,107 INFO L134 CoverageAnalysis]: Checked inductivity of 291 backedges. 22 proven. 248 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2018-11-28 12:05:58,107 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 12:05:58,107 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_4608df79-fbc1-4ee9-9a34-11961c96e0e5/bin-2019/uautomizer/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-28 12:05:58,119 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-11-28 12:05:58,197 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-28 12:05:58,197 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-28 12:05:58,201 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 12:05:58,238 INFO L134 CoverageAnalysis]: Checked inductivity of 291 backedges. 22 proven. 248 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2018-11-28 12:05:58,264 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 12:05:58,264 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 9 [2018-11-28 12:05:58,264 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-11-28 12:05:58,264 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-11-28 12:05:58,264 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2018-11-28 12:05:58,265 INFO L87 Difference]: Start difference. First operand 274 states and 383 transitions. Second operand 9 states. [2018-11-28 12:05:58,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 12:05:58,401 INFO L93 Difference]: Finished difference Result 298 states and 414 transitions. [2018-11-28 12:05:58,402 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-11-28 12:05:58,402 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 121 [2018-11-28 12:05:58,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 12:05:58,404 INFO L225 Difference]: With dead ends: 298 [2018-11-28 12:05:58,404 INFO L226 Difference]: Without dead ends: 295 [2018-11-28 12:05:58,404 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 125 SyntacticMatches, 4 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2018-11-28 12:05:58,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 295 states. [2018-11-28 12:05:58,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 295 to 292. [2018-11-28 12:05:58,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 292 states. [2018-11-28 12:05:58,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 292 states to 292 states and 408 transitions. [2018-11-28 12:05:58,413 INFO L78 Accepts]: Start accepts. Automaton has 292 states and 408 transitions. Word has length 121 [2018-11-28 12:05:58,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 12:05:58,414 INFO L480 AbstractCegarLoop]: Abstraction has 292 states and 408 transitions. [2018-11-28 12:05:58,414 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-11-28 12:05:58,414 INFO L276 IsEmpty]: Start isEmpty. Operand 292 states and 408 transitions. [2018-11-28 12:05:58,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2018-11-28 12:05:58,415 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 12:05:58,415 INFO L402 BasicCegarLoop]: trace histogram [12, 11, 8, 8, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 12:05:58,415 INFO L423 AbstractCegarLoop]: === Iteration 23 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 12:05:58,415 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 12:05:58,415 INFO L82 PathProgramCache]: Analyzing trace with hash -2006984672, now seen corresponding path program 2 times [2018-11-28 12:05:58,415 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 12:05:58,416 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 12:05:58,416 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:05:58,416 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 12:05:58,416 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:05:58,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 12:05:58,996 WARN L180 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 19 [2018-11-28 12:06:01,199 WARN L180 SmtUtils]: Spent 2.13 s on a formula simplification. DAG size of input: 159 DAG size of output: 37 [2018-11-28 12:06:01,223 INFO L134 CoverageAnalysis]: Checked inductivity of 301 backedges. 22 proven. 279 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 12:06:01,223 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 12:06:01,223 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_4608df79-fbc1-4ee9-9a34-11961c96e0e5/bin-2019/uautomizer/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-28 12:06:01,228 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-11-28 12:06:01,289 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-28 12:06:01,289 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-28 12:06:01,292 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 12:06:01,380 INFO L134 CoverageAnalysis]: Checked inductivity of 301 backedges. 22 proven. 279 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 12:06:01,396 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 12:06:01,396 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 15 [2018-11-28 12:06:01,396 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-11-28 12:06:01,396 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-11-28 12:06:01,396 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210 [2018-11-28 12:06:01,397 INFO L87 Difference]: Start difference. First operand 292 states and 408 transitions. Second operand 15 states. [2018-11-28 12:06:01,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 12:06:01,615 INFO L93 Difference]: Finished difference Result 295 states and 411 transitions. [2018-11-28 12:06:01,616 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-11-28 12:06:01,616 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 124 [2018-11-28 12:06:01,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 12:06:01,617 INFO L225 Difference]: With dead ends: 295 [2018-11-28 12:06:01,617 INFO L226 Difference]: Without dead ends: 293 [2018-11-28 12:06:01,617 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 121 SyntacticMatches, 3 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210 [2018-11-28 12:06:01,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 293 states. [2018-11-28 12:06:01,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 293 to 293. [2018-11-28 12:06:01,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 293 states. [2018-11-28 12:06:01,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 293 states to 293 states and 409 transitions. [2018-11-28 12:06:01,625 INFO L78 Accepts]: Start accepts. Automaton has 293 states and 409 transitions. Word has length 124 [2018-11-28 12:06:01,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 12:06:01,625 INFO L480 AbstractCegarLoop]: Abstraction has 293 states and 409 transitions. [2018-11-28 12:06:01,625 INFO L481 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-11-28 12:06:01,625 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states and 409 transitions. [2018-11-28 12:06:01,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2018-11-28 12:06:01,626 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 12:06:01,626 INFO L402 BasicCegarLoop]: trace histogram [13, 12, 9, 9, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 12:06:01,627 INFO L423 AbstractCegarLoop]: === Iteration 24 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 12:06:01,627 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 12:06:01,627 INFO L82 PathProgramCache]: Analyzing trace with hash -1858751879, now seen corresponding path program 2 times [2018-11-28 12:06:01,627 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 12:06:01,627 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 12:06:01,628 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:06:01,628 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 12:06:01,628 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:06:01,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 12:06:01,845 INFO L134 CoverageAnalysis]: Checked inductivity of 363 backedges. 24 proven. 318 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2018-11-28 12:06:01,846 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 12:06:01,846 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_4608df79-fbc1-4ee9-9a34-11961c96e0e5/bin-2019/uautomizer/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-28 12:06:01,856 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-11-28 12:06:01,952 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-28 12:06:01,952 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-28 12:06:01,957 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 12:06:02,086 INFO L134 CoverageAnalysis]: Checked inductivity of 363 backedges. 24 proven. 339 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 12:06:02,101 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 12:06:02,101 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 14] total 21 [2018-11-28 12:06:02,101 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2018-11-28 12:06:02,101 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2018-11-28 12:06:02,102 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=369, Unknown=0, NotChecked=0, Total=420 [2018-11-28 12:06:02,102 INFO L87 Difference]: Start difference. First operand 293 states and 409 transitions. Second operand 21 states. [2018-11-28 12:06:02,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 12:06:02,281 INFO L93 Difference]: Finished difference Result 336 states and 469 transitions. [2018-11-28 12:06:02,281 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-11-28 12:06:02,281 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 135 [2018-11-28 12:06:02,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 12:06:02,282 INFO L225 Difference]: With dead ends: 336 [2018-11-28 12:06:02,282 INFO L226 Difference]: Without dead ends: 332 [2018-11-28 12:06:02,282 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 129 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=369, Unknown=0, NotChecked=0, Total=420 [2018-11-28 12:06:02,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 332 states. [2018-11-28 12:06:02,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 332 to 329. [2018-11-28 12:06:02,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 329 states. [2018-11-28 12:06:02,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 329 states to 329 states and 460 transitions. [2018-11-28 12:06:02,290 INFO L78 Accepts]: Start accepts. Automaton has 329 states and 460 transitions. Word has length 135 [2018-11-28 12:06:02,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 12:06:02,290 INFO L480 AbstractCegarLoop]: Abstraction has 329 states and 460 transitions. [2018-11-28 12:06:02,290 INFO L481 AbstractCegarLoop]: Interpolant automaton has 21 states. [2018-11-28 12:06:02,290 INFO L276 IsEmpty]: Start isEmpty. Operand 329 states and 460 transitions. [2018-11-28 12:06:02,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2018-11-28 12:06:02,291 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 12:06:02,291 INFO L402 BasicCegarLoop]: trace histogram [14, 13, 9, 9, 6, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 12:06:02,291 INFO L423 AbstractCegarLoop]: === Iteration 25 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 12:06:02,291 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 12:06:02,291 INFO L82 PathProgramCache]: Analyzing trace with hash 624796254, now seen corresponding path program 3 times [2018-11-28 12:06:02,292 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 12:06:02,292 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 12:06:02,292 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:06:02,292 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 12:06:02,292 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:06:02,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 12:06:03,075 WARN L180 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 168 DAG size of output: 39 [2018-11-28 12:06:03,316 WARN L180 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 171 DAG size of output: 36 [2018-11-28 12:06:03,344 INFO L134 CoverageAnalysis]: Checked inductivity of 422 backedges. 26 proven. 396 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 12:06:03,345 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 12:06:03,345 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_4608df79-fbc1-4ee9-9a34-11961c96e0e5/bin-2019/uautomizer/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-28 12:06:03,352 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-11-28 12:06:03,394 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2018-11-28 12:06:03,394 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-28 12:06:03,397 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 12:06:03,631 INFO L134 CoverageAnalysis]: Checked inductivity of 422 backedges. 208 proven. 26 refuted. 0 times theorem prover too weak. 188 trivial. 0 not checked. [2018-11-28 12:06:03,656 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 12:06:03,657 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 7] total 23 [2018-11-28 12:06:03,657 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2018-11-28 12:06:03,657 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2018-11-28 12:06:03,657 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=445, Unknown=0, NotChecked=0, Total=506 [2018-11-28 12:06:03,658 INFO L87 Difference]: Start difference. First operand 329 states and 460 transitions. Second operand 23 states. [2018-11-28 12:06:04,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 12:06:04,387 INFO L93 Difference]: Finished difference Result 349 states and 481 transitions. [2018-11-28 12:06:04,387 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2018-11-28 12:06:04,387 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 145 [2018-11-28 12:06:04,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 12:06:04,387 INFO L225 Difference]: With dead ends: 349 [2018-11-28 12:06:04,388 INFO L226 Difference]: Without dead ends: 0 [2018-11-28 12:06:04,388 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 152 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 360 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=197, Invalid=2059, Unknown=0, NotChecked=0, Total=2256 [2018-11-28 12:06:04,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-11-28 12:06:04,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-11-28 12:06:04,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-11-28 12:06:04,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-11-28 12:06:04,389 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 145 [2018-11-28 12:06:04,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 12:06:04,389 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-28 12:06:04,389 INFO L481 AbstractCegarLoop]: Interpolant automaton has 23 states. [2018-11-28 12:06:04,389 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-11-28 12:06:04,389 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-28 12:06:04,392 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-11-28 12:06:04,410 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-28 12:06:04,428 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-28 12:06:04,428 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-28 12:06:04,429 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-28 12:06:04,430 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-28 12:06:04,432 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-28 12:06:04,433 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-28 12:06:04,436 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-28 12:06:04,439 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-28 12:06:04,441 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-28 12:06:04,442 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-28 12:06:04,664 WARN L180 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 44 [2018-11-28 12:06:04,666 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2018-11-28 12:06:04,667 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: true [2018-11-28 12:06:04,667 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-11-28 12:06:04,667 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-11-28 12:06:04,667 INFO L451 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-11-28 12:06:04,667 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-11-28 12:06:04,667 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-11-28 12:06:04,667 INFO L448 ceAbstractionStarter]: For program point mainEXIT(lines 14 566) no Hoare annotation was computed. [2018-11-28 12:06:04,667 INFO L448 ceAbstractionStarter]: For program point L498(lines 498 500) no Hoare annotation was computed. [2018-11-28 12:06:04,667 INFO L448 ceAbstractionStarter]: For program point L366(lines 366 368) no Hoare annotation was computed. [2018-11-28 12:06:04,667 INFO L448 ceAbstractionStarter]: For program point L466(lines 466 468) no Hoare annotation was computed. [2018-11-28 12:06:04,667 INFO L448 ceAbstractionStarter]: For program point mainFINAL(lines 14 566) no Hoare annotation was computed. [2018-11-28 12:06:04,667 INFO L448 ceAbstractionStarter]: For program point L39(lines 39 58) no Hoare annotation was computed. [2018-11-28 12:06:04,668 INFO L448 ceAbstractionStarter]: For program point L40(lines 40 55) no Hoare annotation was computed. [2018-11-28 12:06:04,668 INFO L448 ceAbstractionStarter]: For program point L140(lines 140 155) no Hoare annotation was computed. [2018-11-28 12:06:04,668 INFO L448 ceAbstractionStarter]: For program point L240(lines 240 255) no Hoare annotation was computed. [2018-11-28 12:06:04,668 INFO L448 ceAbstractionStarter]: For program point L108(lines 108 123) no Hoare annotation was computed. [2018-11-28 12:06:04,668 INFO L448 ceAbstractionStarter]: For program point L42(lines 42 53) no Hoare annotation was computed. [2018-11-28 12:06:04,668 INFO L448 ceAbstractionStarter]: For program point L340(lines 340 355) no Hoare annotation was computed. [2018-11-28 12:06:04,668 INFO L448 ceAbstractionStarter]: For program point L208(lines 208 223) no Hoare annotation was computed. [2018-11-28 12:06:04,668 INFO L448 ceAbstractionStarter]: For program point L142(lines 142 153) no Hoare annotation was computed. [2018-11-28 12:06:04,668 INFO L448 ceAbstractionStarter]: For program point L76(lines 76 91) no Hoare annotation was computed. [2018-11-28 12:06:04,668 INFO L448 ceAbstractionStarter]: For program point L440(lines 440 455) no Hoare annotation was computed. [2018-11-28 12:06:04,668 INFO L448 ceAbstractionStarter]: For program point L308(lines 308 323) no Hoare annotation was computed. [2018-11-28 12:06:04,668 INFO L448 ceAbstractionStarter]: For program point L242(lines 242 253) no Hoare annotation was computed. [2018-11-28 12:06:04,669 INFO L448 ceAbstractionStarter]: For program point L176(lines 176 191) no Hoare annotation was computed. [2018-11-28 12:06:04,669 INFO L448 ceAbstractionStarter]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 565) no Hoare annotation was computed. [2018-11-28 12:06:04,669 INFO L448 ceAbstractionStarter]: For program point L110(lines 110 121) no Hoare annotation was computed. [2018-11-28 12:06:04,669 INFO L448 ceAbstractionStarter]: For program point L540(lines 540 555) no Hoare annotation was computed. [2018-11-28 12:06:04,669 INFO L448 ceAbstractionStarter]: For program point L408(lines 408 423) no Hoare annotation was computed. [2018-11-28 12:06:04,669 INFO L448 ceAbstractionStarter]: For program point L342(lines 342 353) no Hoare annotation was computed. [2018-11-28 12:06:04,669 INFO L448 ceAbstractionStarter]: For program point L276(lines 276 291) no Hoare annotation was computed. [2018-11-28 12:06:04,669 INFO L448 ceAbstractionStarter]: For program point L210(lines 210 221) no Hoare annotation was computed. [2018-11-28 12:06:04,669 INFO L448 ceAbstractionStarter]: For program point L78(lines 78 89) no Hoare annotation was computed. [2018-11-28 12:06:04,669 INFO L448 ceAbstractionStarter]: For program point L508(lines 508 523) no Hoare annotation was computed. [2018-11-28 12:06:04,669 INFO L448 ceAbstractionStarter]: For program point L442(lines 442 453) no Hoare annotation was computed. [2018-11-28 12:06:04,669 INFO L448 ceAbstractionStarter]: For program point L376(lines 376 391) no Hoare annotation was computed. [2018-11-28 12:06:04,670 INFO L448 ceAbstractionStarter]: For program point L310(lines 310 321) no Hoare annotation was computed. [2018-11-28 12:06:04,670 INFO L448 ceAbstractionStarter]: For program point L178(lines 178 189) no Hoare annotation was computed. [2018-11-28 12:06:04,670 INFO L448 ceAbstractionStarter]: For program point L46(lines 46 48) no Hoare annotation was computed. [2018-11-28 12:06:04,670 INFO L448 ceAbstractionStarter]: For program point L542(lines 542 553) no Hoare annotation was computed. [2018-11-28 12:06:04,670 INFO L448 ceAbstractionStarter]: For program point L476(lines 476 491) no Hoare annotation was computed. [2018-11-28 12:06:04,670 INFO L448 ceAbstractionStarter]: For program point L410(lines 410 421) no Hoare annotation was computed. [2018-11-28 12:06:04,670 INFO L448 ceAbstractionStarter]: For program point L278(lines 278 289) no Hoare annotation was computed. [2018-11-28 12:06:04,670 INFO L448 ceAbstractionStarter]: For program point L146(lines 146 148) no Hoare annotation was computed. [2018-11-28 12:06:04,670 INFO L448 ceAbstractionStarter]: For program point L510(lines 510 521) no Hoare annotation was computed. [2018-11-28 12:06:04,670 INFO L448 ceAbstractionStarter]: For program point L378(lines 378 389) no Hoare annotation was computed. [2018-11-28 12:06:04,670 INFO L448 ceAbstractionStarter]: For program point L246(lines 246 248) no Hoare annotation was computed. [2018-11-28 12:06:04,670 INFO L448 ceAbstractionStarter]: For program point L114(lines 114 116) no Hoare annotation was computed. [2018-11-28 12:06:04,671 INFO L448 ceAbstractionStarter]: For program point L478(lines 478 489) no Hoare annotation was computed. [2018-11-28 12:06:04,671 INFO L448 ceAbstractionStarter]: For program point L346(lines 346 348) no Hoare annotation was computed. [2018-11-28 12:06:04,671 INFO L448 ceAbstractionStarter]: For program point L214(lines 214 216) no Hoare annotation was computed. [2018-11-28 12:06:04,671 INFO L448 ceAbstractionStarter]: For program point L82(lines 82 84) no Hoare annotation was computed. [2018-11-28 12:06:04,671 INFO L448 ceAbstractionStarter]: For program point L446(lines 446 448) no Hoare annotation was computed. [2018-11-28 12:06:04,671 INFO L448 ceAbstractionStarter]: For program point L314(lines 314 316) no Hoare annotation was computed. [2018-11-28 12:06:04,671 INFO L448 ceAbstractionStarter]: For program point L182(lines 182 184) no Hoare annotation was computed. [2018-11-28 12:06:04,671 INFO L448 ceAbstractionStarter]: For program point L546(lines 546 548) no Hoare annotation was computed. [2018-11-28 12:06:04,671 INFO L448 ceAbstractionStarter]: For program point L414(lines 414 416) no Hoare annotation was computed. [2018-11-28 12:06:04,671 INFO L448 ceAbstractionStarter]: For program point L282(lines 282 284) no Hoare annotation was computed. [2018-11-28 12:06:04,671 INFO L444 ceAbstractionStarter]: At program point L547(lines 14 566) the Hoare annotation is: false [2018-11-28 12:06:04,671 INFO L448 ceAbstractionStarter]: For program point L514(lines 514 516) no Hoare annotation was computed. [2018-11-28 12:06:04,671 INFO L448 ceAbstractionStarter]: For program point L382(lines 382 384) no Hoare annotation was computed. [2018-11-28 12:06:04,672 INFO L448 ceAbstractionStarter]: For program point L482(lines 482 484) no Hoare annotation was computed. [2018-11-28 12:06:04,672 INFO L444 ceAbstractionStarter]: At program point L24-2(lines 24 561) the Hoare annotation is: (let ((.cse0 (<= main_~this_buffer_empty~0 0)) (.cse1 (<= 0 main_~this_buffer_empty~0))) (or (and (<= main_~this_expect~0 0) (<= 0 main_~this_expect~0) (= main_~q~0 0) .cse0 .cse1) (and (exists ((main_~P1~0 Int)) (let ((.cse2 (mod main_~P1~0 2))) (and (= .cse2 0) (= .cse2 (mod main_~this_expect~0 2))))) (<= 5 main_~q~0) (<= 0 (+ main_~P8~0 2147483648)) (<= main_~P8~0 2147483647) .cse0 .cse1))) [2018-11-28 12:06:04,672 INFO L448 ceAbstractionStarter]: For program point L24-3(lines 24 561) no Hoare annotation was computed. [2018-11-28 12:06:04,672 INFO L448 ceAbstractionStarter]: For program point L124(lines 124 139) no Hoare annotation was computed. [2018-11-28 12:06:04,672 INFO L448 ceAbstractionStarter]: For program point L224(lines 224 239) no Hoare annotation was computed. [2018-11-28 12:06:04,672 INFO L448 ceAbstractionStarter]: For program point L92(lines 92 107) no Hoare annotation was computed. [2018-11-28 12:06:04,672 INFO L448 ceAbstractionStarter]: For program point L59(lines 59 158) no Hoare annotation was computed. [2018-11-28 12:06:04,672 INFO L448 ceAbstractionStarter]: For program point L324(lines 324 339) no Hoare annotation was computed. [2018-11-28 12:06:04,672 INFO L448 ceAbstractionStarter]: For program point L192(lines 192 207) no Hoare annotation was computed. [2018-11-28 12:06:04,672 INFO L448 ceAbstractionStarter]: For program point L159(lines 159 258) no Hoare annotation was computed. [2018-11-28 12:06:04,673 INFO L448 ceAbstractionStarter]: For program point L126(lines 126 137) no Hoare annotation was computed. [2018-11-28 12:06:04,673 INFO L448 ceAbstractionStarter]: For program point L60(lines 60 75) no Hoare annotation was computed. [2018-11-28 12:06:04,673 INFO L448 ceAbstractionStarter]: For program point L424(lines 424 439) no Hoare annotation was computed. [2018-11-28 12:06:04,673 INFO L448 ceAbstractionStarter]: For program point L292(lines 292 307) no Hoare annotation was computed. [2018-11-28 12:06:04,673 INFO L448 ceAbstractionStarter]: For program point L259(lines 259 358) no Hoare annotation was computed. [2018-11-28 12:06:04,673 INFO L448 ceAbstractionStarter]: For program point L226(lines 226 237) no Hoare annotation was computed. [2018-11-28 12:06:04,673 INFO L448 ceAbstractionStarter]: For program point L160(lines 160 175) no Hoare annotation was computed. [2018-11-28 12:06:04,673 INFO L448 ceAbstractionStarter]: For program point L94(lines 94 105) no Hoare annotation was computed. [2018-11-28 12:06:04,673 INFO L444 ceAbstractionStarter]: At program point L557(lines 24 561) the Hoare annotation is: (let ((.cse0 (exists ((main_~P1~0 Int)) (let ((.cse9 (mod main_~P1~0 2))) (and (= .cse9 0) (= .cse9 (mod (+ main_~this_expect~0 1) 2)))))) (.cse6 (<= main_~this_buffer_empty~0 1)) (.cse7 (<= 1 main_~this_buffer_empty~0)) (.cse5 (exists ((main_~P1~0 Int)) (let ((.cse8 (mod main_~P1~0 2))) (and (= .cse8 0) (= .cse8 (mod main_~this_expect~0 2)))))) (.cse1 (<= 0 (+ main_~P8~0 2147483648))) (.cse2 (<= main_~P8~0 2147483647)) (.cse3 (<= main_~this_buffer_empty~0 0)) (.cse4 (<= 0 main_~this_buffer_empty~0))) (or (and .cse0 .cse1 (= main_~q~0 3) .cse2 .cse3 .cse4) (and .cse5 (= main_~q~0 1) .cse6 .cse1 .cse7 .cse2) (and .cse0 .cse6 .cse1 (= main_~q~0 4) .cse7 .cse2) (and .cse5 (<= 5 main_~q~0) .cse1 .cse2 .cse3 .cse4) (and (<= main_~this_expect~0 0) (= main_~q~0 0) (<= 0 main_~this_expect~0) .cse3 .cse4))) [2018-11-28 12:06:04,674 INFO L448 ceAbstractionStarter]: For program point L524(lines 524 539) no Hoare annotation was computed. [2018-11-28 12:06:04,674 INFO L448 ceAbstractionStarter]: For program point L392(lines 392 407) no Hoare annotation was computed. [2018-11-28 12:06:04,674 INFO L448 ceAbstractionStarter]: For program point L359(lines 359 458) no Hoare annotation was computed. [2018-11-28 12:06:04,674 INFO L448 ceAbstractionStarter]: For program point L326(lines 326 337) no Hoare annotation was computed. [2018-11-28 12:06:04,674 INFO L448 ceAbstractionStarter]: For program point L260(lines 260 275) no Hoare annotation was computed. [2018-11-28 12:06:04,674 INFO L448 ceAbstractionStarter]: For program point L194(lines 194 205) no Hoare annotation was computed. [2018-11-28 12:06:04,674 INFO L448 ceAbstractionStarter]: For program point L62(lines 62 73) no Hoare annotation was computed. [2018-11-28 12:06:04,674 INFO L448 ceAbstractionStarter]: For program point L492(lines 492 507) no Hoare annotation was computed. [2018-11-28 12:06:04,674 INFO L448 ceAbstractionStarter]: For program point L459(lines 459 558) no Hoare annotation was computed. [2018-11-28 12:06:04,674 INFO L448 ceAbstractionStarter]: For program point L426(lines 426 437) no Hoare annotation was computed. [2018-11-28 12:06:04,674 INFO L448 ceAbstractionStarter]: For program point L360(lines 360 375) no Hoare annotation was computed. [2018-11-28 12:06:04,674 INFO L448 ceAbstractionStarter]: For program point L294(lines 294 305) no Hoare annotation was computed. [2018-11-28 12:06:04,675 INFO L448 ceAbstractionStarter]: For program point L162(lines 162 173) no Hoare annotation was computed. [2018-11-28 12:06:04,675 INFO L451 ceAbstractionStarter]: At program point mainENTRY(lines 14 566) the Hoare annotation is: true [2018-11-28 12:06:04,675 INFO L448 ceAbstractionStarter]: For program point L526(lines 526 537) no Hoare annotation was computed. [2018-11-28 12:06:04,675 INFO L448 ceAbstractionStarter]: For program point L460(lines 460 475) no Hoare annotation was computed. [2018-11-28 12:06:04,675 INFO L448 ceAbstractionStarter]: For program point L394(lines 394 405) no Hoare annotation was computed. [2018-11-28 12:06:04,675 INFO L448 ceAbstractionStarter]: For program point L262(lines 262 273) no Hoare annotation was computed. [2018-11-28 12:06:04,675 INFO L448 ceAbstractionStarter]: For program point L130(lines 130 132) no Hoare annotation was computed. [2018-11-28 12:06:04,675 INFO L448 ceAbstractionStarter]: For program point L494(lines 494 505) no Hoare annotation was computed. [2018-11-28 12:06:04,675 INFO L448 ceAbstractionStarter]: For program point L362(lines 362 373) no Hoare annotation was computed. [2018-11-28 12:06:04,675 INFO L448 ceAbstractionStarter]: For program point L230(lines 230 232) no Hoare annotation was computed. [2018-11-28 12:06:04,675 INFO L448 ceAbstractionStarter]: For program point L98(lines 98 100) no Hoare annotation was computed. [2018-11-28 12:06:04,675 INFO L448 ceAbstractionStarter]: For program point L462(lines 462 473) no Hoare annotation was computed. [2018-11-28 12:06:04,675 INFO L448 ceAbstractionStarter]: For program point L330(lines 330 332) no Hoare annotation was computed. [2018-11-28 12:06:04,676 INFO L448 ceAbstractionStarter]: For program point L198(lines 198 200) no Hoare annotation was computed. [2018-11-28 12:06:04,676 INFO L448 ceAbstractionStarter]: For program point L66(lines 66 68) no Hoare annotation was computed. [2018-11-28 12:06:04,676 INFO L448 ceAbstractionStarter]: For program point L430(lines 430 432) no Hoare annotation was computed. [2018-11-28 12:06:04,676 INFO L448 ceAbstractionStarter]: For program point L298(lines 298 300) no Hoare annotation was computed. [2018-11-28 12:06:04,676 INFO L448 ceAbstractionStarter]: For program point L166(lines 166 168) no Hoare annotation was computed. [2018-11-28 12:06:04,676 INFO L448 ceAbstractionStarter]: For program point L530(lines 530 532) no Hoare annotation was computed. [2018-11-28 12:06:04,676 INFO L448 ceAbstractionStarter]: For program point L398(lines 398 400) no Hoare annotation was computed. [2018-11-28 12:06:04,676 INFO L448 ceAbstractionStarter]: For program point L266(lines 266 268) no Hoare annotation was computed. [2018-11-28 12:06:04,681 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~P1~0,QUANTIFIED] [2018-11-28 12:06:04,682 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~P1~0,QUANTIFIED] [2018-11-28 12:06:04,688 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~P1~0,QUANTIFIED] [2018-11-28 12:06:04,688 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~P1~0,QUANTIFIED] [2018-11-28 12:06:04,689 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~P1~0,QUANTIFIED] [2018-11-28 12:06:04,689 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~P1~0,QUANTIFIED] [2018-11-28 12:06:04,690 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~P1~0,QUANTIFIED] [2018-11-28 12:06:04,690 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~P1~0,QUANTIFIED] [2018-11-28 12:06:04,690 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~P1~0,QUANTIFIED] [2018-11-28 12:06:04,690 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~P1~0,QUANTIFIED] [2018-11-28 12:06:04,690 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~P1~0,QUANTIFIED] [2018-11-28 12:06:04,690 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~P1~0,QUANTIFIED] [2018-11-28 12:06:04,691 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~P1~0,QUANTIFIED] [2018-11-28 12:06:04,691 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~P1~0,QUANTIFIED] [2018-11-28 12:06:04,691 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~P1~0,QUANTIFIED] [2018-11-28 12:06:04,692 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~P1~0,QUANTIFIED] [2018-11-28 12:06:04,692 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~P1~0,QUANTIFIED] [2018-11-28 12:06:04,692 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~P1~0,QUANTIFIED] [2018-11-28 12:06:04,692 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~P1~0,QUANTIFIED] [2018-11-28 12:06:04,692 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~P1~0,QUANTIFIED] [2018-11-28 12:06:04,694 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 12:06:04 BoogieIcfgContainer [2018-11-28 12:06:04,694 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-28 12:06:04,695 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-28 12:06:04,695 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-28 12:06:04,695 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-28 12:06:04,695 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 12:05:42" (3/4) ... [2018-11-28 12:06:04,698 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-11-28 12:06:04,703 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-11-28 12:06:04,704 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-11-28 12:06:04,711 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2018-11-28 12:06:04,711 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2018-11-28 12:06:04,729 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((this_expect <= 0 && 0 <= this_expect) && q == 0) && this_buffer_empty <= 0) && 0 <= this_buffer_empty) || ((((((\exists main_~P1~0 : int :: main_~P1~0 % 2 == 0 && main_~P1~0 % 2 == this_expect % 2) && 5 <= q) && 0 <= P8 + 2147483648) && P8 <= 2147483647) && this_buffer_empty <= 0) && 0 <= this_buffer_empty) [2018-11-28 12:06:04,737 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_4608df79-fbc1-4ee9-9a34-11961c96e0e5/bin-2019/uautomizer/witness.graphml [2018-11-28 12:06:04,737 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-28 12:06:04,737 INFO L168 Benchmark]: Toolchain (without parser) took 22804.70 ms. Allocated memory was 1.0 GB in the beginning and 1.5 GB in the end (delta: 444.1 MB). Free memory was 953.3 MB in the beginning and 862.5 MB in the end (delta: 90.8 MB). Peak memory consumption was 534.9 MB. Max. memory is 11.5 GB. [2018-11-28 12:06:04,738 INFO L168 Benchmark]: CDTParser took 0.14 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. [2018-11-28 12:06:04,738 INFO L168 Benchmark]: CACSL2BoogieTranslator took 315.72 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 154.1 MB). Free memory was 950.6 MB in the beginning and 1.2 GB in the end (delta: -200.3 MB). Peak memory consumption was 35.2 MB. Max. memory is 11.5 GB. [2018-11-28 12:06:04,739 INFO L168 Benchmark]: Boogie Procedure Inliner took 20.50 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 3.4 MB). Peak memory consumption was 3.4 MB. Max. memory is 11.5 GB. [2018-11-28 12:06:04,739 INFO L168 Benchmark]: Boogie Preprocessor took 40.97 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 3.4 MB). Peak memory consumption was 3.4 MB. Max. memory is 11.5 GB. [2018-11-28 12:06:04,739 INFO L168 Benchmark]: RCFGBuilder took 584.85 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 60.3 MB). Peak memory consumption was 60.3 MB. Max. memory is 11.5 GB. [2018-11-28 12:06:04,740 INFO L168 Benchmark]: TraceAbstraction took 21796.97 ms. Allocated memory was 1.2 GB in the beginning and 1.5 GB in the end (delta: 289.9 MB). Free memory was 1.1 GB in the beginning and 862.5 MB in the end (delta: 221.3 MB). Peak memory consumption was 511.2 MB. Max. memory is 11.5 GB. [2018-11-28 12:06:04,740 INFO L168 Benchmark]: Witness Printer took 42.37 ms. Allocated memory is still 1.5 GB. Free memory is still 862.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 12:06:04,742 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14 ms. Allocated memory is still 1.0 GB. Free memory is still 979.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 315.72 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 154.1 MB). Free memory was 950.6 MB in the beginning and 1.2 GB in the end (delta: -200.3 MB). Peak memory consumption was 35.2 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 20.50 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 3.4 MB). Peak memory consumption was 3.4 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 40.97 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 3.4 MB). Peak memory consumption was 3.4 MB. Max. memory is 11.5 GB. * RCFGBuilder took 584.85 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 60.3 MB). Peak memory consumption was 60.3 MB. Max. memory is 11.5 GB. * TraceAbstraction took 21796.97 ms. Allocated memory was 1.2 GB in the beginning and 1.5 GB in the end (delta: 289.9 MB). Free memory was 1.1 GB in the beginning and 862.5 MB in the end (delta: 221.3 MB). Peak memory consumption was 511.2 MB. Max. memory is 11.5 GB. * Witness Printer took 42.37 ms. Allocated memory is still 1.5 GB. Free memory is still 862.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~P1~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~P1~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~P1~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~P1~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~P1~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~P1~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~P1~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~P1~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~P1~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~P1~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~P1~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~P1~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~P1~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~P1~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~P1~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~P1~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~P1~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~P1~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~P1~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~P1~0,QUANTIFIED] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 565]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 24]: Loop Invariant [2018-11-28 12:06:04,746 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~P1~0,QUANTIFIED] [2018-11-28 12:06:04,747 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~P1~0,QUANTIFIED] [2018-11-28 12:06:04,747 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~P1~0,QUANTIFIED] [2018-11-28 12:06:04,747 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~P1~0,QUANTIFIED] Derived loop invariant: ((((this_expect <= 0 && 0 <= this_expect) && q == 0) && this_buffer_empty <= 0) && 0 <= this_buffer_empty) || ((((((\exists main_~P1~0 : int :: main_~P1~0 % 2 == 0 && main_~P1~0 % 2 == this_expect % 2) && 5 <= q) && 0 <= P8 + 2147483648) && P8 <= 2147483647) && this_buffer_empty <= 0) && 0 <= this_buffer_empty) - InvariantResult [Line: 24]: Loop Invariant [2018-11-28 12:06:04,748 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~P1~0,QUANTIFIED] [2018-11-28 12:06:04,748 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~P1~0,QUANTIFIED] [2018-11-28 12:06:04,748 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~P1~0,QUANTIFIED] [2018-11-28 12:06:04,748 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~P1~0,QUANTIFIED] [2018-11-28 12:06:04,748 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~P1~0,QUANTIFIED] [2018-11-28 12:06:04,749 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~P1~0,QUANTIFIED] [2018-11-28 12:06:04,749 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~P1~0,QUANTIFIED] [2018-11-28 12:06:04,749 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~P1~0,QUANTIFIED] [2018-11-28 12:06:04,749 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~P1~0,QUANTIFIED] [2018-11-28 12:06:04,750 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~P1~0,QUANTIFIED] [2018-11-28 12:06:04,750 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~P1~0,QUANTIFIED] [2018-11-28 12:06:04,750 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~P1~0,QUANTIFIED] [2018-11-28 12:06:04,750 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~P1~0,QUANTIFIED] [2018-11-28 12:06:04,750 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~P1~0,QUANTIFIED] [2018-11-28 12:06:04,750 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~P1~0,QUANTIFIED] [2018-11-28 12:06:04,751 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~P1~0,QUANTIFIED] Derived loop invariant: (((((((((\exists main_~P1~0 : int :: main_~P1~0 % 2 == 0 && main_~P1~0 % 2 == (this_expect + 1) % 2) && 0 <= P8 + 2147483648) && q == 3) && P8 <= 2147483647) && this_buffer_empty <= 0) && 0 <= this_buffer_empty) || ((((((\exists main_~P1~0 : int :: main_~P1~0 % 2 == 0 && main_~P1~0 % 2 == this_expect % 2) && q == 1) && this_buffer_empty <= 1) && 0 <= P8 + 2147483648) && 1 <= this_buffer_empty) && P8 <= 2147483647)) || ((((((\exists main_~P1~0 : int :: main_~P1~0 % 2 == 0 && main_~P1~0 % 2 == (this_expect + 1) % 2) && this_buffer_empty <= 1) && 0 <= P8 + 2147483648) && q == 4) && 1 <= this_buffer_empty) && P8 <= 2147483647)) || ((((((\exists main_~P1~0 : int :: main_~P1~0 % 2 == 0 && main_~P1~0 % 2 == this_expect % 2) && 5 <= q) && 0 <= P8 + 2147483648) && P8 <= 2147483647) && this_buffer_empty <= 0) && 0 <= this_buffer_empty)) || ((((this_expect <= 0 && q == 0) && 0 <= this_expect) && this_buffer_empty <= 0) && 0 <= this_buffer_empty) - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: 0 - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 114 locations, 1 error locations. SAFE Result, 21.7s OverallTime, 25 OverallIterations, 14 TraceHistogramMax, 3.7s AutomataDifference, 0.0s DeadEndRemovalTime, 0.2s HoareAnnotationTime, HoareTripleCheckerStatistics: 4868 SDtfs, 3639 SDslu, 26546 SDs, 0 SdLazy, 3565 SolverSat, 197 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1536 GetRequests, 1303 SyntacticMatches, 27 SemanticMatches, 206 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 634 ImplicationChecksByTransitivity, 14.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=329occurred in iteration=24, 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: 0.1s AutomataMinimizationTime, 25 MinimizatonAttempts, 98 StatesRemovedByMinimization, 18 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 7 PreInvPairs, 49 NumberOfFragments, 203 HoareAnnotationTreeSize, 7 FomulaSimplifications, 3029 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 783 FormulaSimplificationTreeSizeReductionInter, 0.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.2s SsaConstructionTime, 1.4s SatisfiabilityAnalysisTime, 14.8s InterpolantComputationTime, 2852 NumberOfCodeBlocks, 2768 NumberOfCodeBlocksAsserted, 51 NumberOfCheckSat, 2811 ConstructedInterpolants, 42 QuantifiedInterpolants, 2653149 SizeOfPredicates, 58 NumberOfNonLiveVariables, 8173 ConjunctsInSsa, 452 ConjunctsInUnsatCore, 41 InterpolantComputations, 10 PerfectInterpolantSequences, 1038/4848 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...