./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/recursive-simple/fibo_2calls_8-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 678e0110 Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_83124591-8f3a-4d57-89f5-da76ab123fa1/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_83124591-8f3a-4d57-89f5-da76ab123fa1/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_83124591-8f3a-4d57-89f5-da76ab123fa1/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_83124591-8f3a-4d57-89f5-da76ab123fa1/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/recursive-simple/fibo_2calls_8-1.c -s /tmp/vcloud-vcloud-master/worker/run_dir_83124591-8f3a-4d57-89f5-da76ab123fa1/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_83124591-8f3a-4d57-89f5-da76ab123fa1/bin/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 cd6d4490a7412402195d3193de0347508566f7c8 ......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-678e011 [2019-11-19 22:35:02,857 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-19 22:35:02,859 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-19 22:35:02,869 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-19 22:35:02,869 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-19 22:35:02,870 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-19 22:35:02,871 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-19 22:35:02,873 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-19 22:35:02,875 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-19 22:35:02,876 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-19 22:35:02,876 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-19 22:35:02,878 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-19 22:35:02,878 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-19 22:35:02,879 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-19 22:35:02,880 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-19 22:35:02,881 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-19 22:35:02,881 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-19 22:35:02,882 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-19 22:35:02,884 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-19 22:35:02,886 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-19 22:35:02,887 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-19 22:35:02,888 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-19 22:35:02,889 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-19 22:35:02,890 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-19 22:35:02,892 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-19 22:35:02,892 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-19 22:35:02,893 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-19 22:35:02,893 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-19 22:35:02,894 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-19 22:35:02,894 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-19 22:35:02,895 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-19 22:35:02,895 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-19 22:35:02,896 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-19 22:35:02,896 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-19 22:35:02,897 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-19 22:35:02,897 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-19 22:35:02,898 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-19 22:35:02,898 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-19 22:35:02,898 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-19 22:35:02,899 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-19 22:35:02,900 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-19 22:35:02,900 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_83124591-8f3a-4d57-89f5-da76ab123fa1/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-19 22:35:02,911 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-19 22:35:02,912 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-19 22:35:02,913 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-19 22:35:02,913 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-19 22:35:02,913 INFO L138 SettingsManager]: * Use SBE=true [2019-11-19 22:35:02,913 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-19 22:35:02,913 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-19 22:35:02,914 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-19 22:35:02,914 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-19 22:35:02,914 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-19 22:35:02,914 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-19 22:35:02,914 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-19 22:35:02,914 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-19 22:35:02,915 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-19 22:35:02,915 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-19 22:35:02,915 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-19 22:35:02,915 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-19 22:35:02,915 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-19 22:35:02,915 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-19 22:35:02,916 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-19 22:35:02,916 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-19 22:35:02,916 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-19 22:35:02,916 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-19 22:35:02,916 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-19 22:35:02,917 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-19 22:35:02,917 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-19 22:35:02,917 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-19 22:35:02,917 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-19 22:35:02,917 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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/run_dir_83124591-8f3a-4d57-89f5-da76ab123fa1/bin/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 -> cd6d4490a7412402195d3193de0347508566f7c8 [2019-11-19 22:35:03,071 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-19 22:35:03,081 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-19 22:35:03,084 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-19 22:35:03,085 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-19 22:35:03,085 INFO L275 PluginConnector]: CDTParser initialized [2019-11-19 22:35:03,086 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_83124591-8f3a-4d57-89f5-da76ab123fa1/bin/uautomizer/../../sv-benchmarks/c/recursive-simple/fibo_2calls_8-1.c [2019-11-19 22:35:03,135 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_83124591-8f3a-4d57-89f5-da76ab123fa1/bin/uautomizer/data/36827a77b/36aabd32d7b14853958f1cef00a19e39/FLAG11b9e672e [2019-11-19 22:35:03,553 INFO L306 CDTParser]: Found 1 translation units. [2019-11-19 22:35:03,554 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_83124591-8f3a-4d57-89f5-da76ab123fa1/sv-benchmarks/c/recursive-simple/fibo_2calls_8-1.c [2019-11-19 22:35:03,559 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_83124591-8f3a-4d57-89f5-da76ab123fa1/bin/uautomizer/data/36827a77b/36aabd32d7b14853958f1cef00a19e39/FLAG11b9e672e [2019-11-19 22:35:03,571 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_83124591-8f3a-4d57-89f5-da76ab123fa1/bin/uautomizer/data/36827a77b/36aabd32d7b14853958f1cef00a19e39 [2019-11-19 22:35:03,573 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-19 22:35:03,574 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-19 22:35:03,575 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-19 22:35:03,575 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-19 22:35:03,578 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-19 22:35:03,579 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 10:35:03" (1/1) ... [2019-11-19 22:35:03,581 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2b3c7c74 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:35:03, skipping insertion in model container [2019-11-19 22:35:03,581 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 10:35:03" (1/1) ... [2019-11-19 22:35:03,586 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-19 22:35:03,600 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-19 22:35:03,789 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-19 22:35:03,794 INFO L188 MainTranslator]: Completed pre-run [2019-11-19 22:35:03,814 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-19 22:35:03,827 INFO L192 MainTranslator]: Completed translation [2019-11-19 22:35:03,827 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:35:03 WrapperNode [2019-11-19 22:35:03,827 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-19 22:35:03,828 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-19 22:35:03,828 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-19 22:35:03,828 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-19 22:35:03,836 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:35:03" (1/1) ... [2019-11-19 22:35:03,840 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:35:03" (1/1) ... [2019-11-19 22:35:03,855 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-19 22:35:03,855 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-19 22:35:03,856 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-19 22:35:03,856 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-19 22:35:03,864 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:35:03" (1/1) ... [2019-11-19 22:35:03,864 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:35:03" (1/1) ... [2019-11-19 22:35:03,865 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:35:03" (1/1) ... [2019-11-19 22:35:03,865 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:35:03" (1/1) ... [2019-11-19 22:35:03,867 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:35:03" (1/1) ... [2019-11-19 22:35:03,869 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:35:03" (1/1) ... [2019-11-19 22:35:03,870 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:35:03" (1/1) ... [2019-11-19 22:35:03,871 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-19 22:35:03,872 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-19 22:35:03,872 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-19 22:35:03,872 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-19 22:35:03,872 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:35:03" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_83124591-8f3a-4d57-89f5-da76ab123fa1/bin/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 [2019-11-19 22:35:03,926 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-19 22:35:03,926 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-19 22:35:03,926 INFO L130 BoogieDeclarations]: Found specification of procedure fibo2 [2019-11-19 22:35:03,926 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo2 [2019-11-19 22:35:03,926 INFO L130 BoogieDeclarations]: Found specification of procedure fibo1 [2019-11-19 22:35:03,927 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo1 [2019-11-19 22:35:04,181 INFO L280 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-19 22:35:04,181 INFO L285 CfgBuilder]: Removed 4 assume(true) statements. [2019-11-19 22:35:04,182 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 10:35:04 BoogieIcfgContainer [2019-11-19 22:35:04,182 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-19 22:35:04,183 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-19 22:35:04,183 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-19 22:35:04,189 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-19 22:35:04,190 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 10:35:03" (1/3) ... [2019-11-19 22:35:04,191 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58b2c41 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 10:35:04, skipping insertion in model container [2019-11-19 22:35:04,191 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:35:03" (2/3) ... [2019-11-19 22:35:04,192 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58b2c41 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 10:35:04, skipping insertion in model container [2019-11-19 22:35:04,192 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 10:35:04" (3/3) ... [2019-11-19 22:35:04,195 INFO L109 eAbstractionObserver]: Analyzing ICFG fibo_2calls_8-1.c [2019-11-19 22:35:04,202 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-19 22:35:04,207 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-19 22:35:04,216 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-19 22:35:04,232 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-19 22:35:04,232 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-19 22:35:04,232 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-19 22:35:04,233 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-19 22:35:04,233 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-19 22:35:04,233 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-19 22:35:04,233 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-19 22:35:04,233 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-19 22:35:04,247 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states. [2019-11-19 22:35:04,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-11-19 22:35:04,252 INFO L402 BasicCegarLoop]: Found error trace [2019-11-19 22:35:04,253 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-19 22:35:04,254 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-19 22:35:04,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 22:35:04,259 INFO L82 PathProgramCache]: Analyzing trace with hash 1871295635, now seen corresponding path program 1 times [2019-11-19 22:35:04,267 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 22:35:04,267 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [95588221] [2019-11-19 22:35:04,268 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 22:35:04,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:04,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:04,419 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 22:35:04,420 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [95588221] [2019-11-19 22:35:04,420 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-19 22:35:04,420 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-19 22:35:04,422 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1885270282] [2019-11-19 22:35:04,426 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-19 22:35:04,426 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-19 22:35:04,435 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-19 22:35:04,436 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-19 22:35:04,437 INFO L87 Difference]: Start difference. First operand 28 states. Second operand 5 states. [2019-11-19 22:35:04,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-19 22:35:04,543 INFO L93 Difference]: Finished difference Result 38 states and 47 transitions. [2019-11-19 22:35:04,543 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-19 22:35:04,545 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2019-11-19 22:35:04,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-19 22:35:04,553 INFO L225 Difference]: With dead ends: 38 [2019-11-19 22:35:04,553 INFO L226 Difference]: Without dead ends: 26 [2019-11-19 22:35:04,556 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-11-19 22:35:04,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2019-11-19 22:35:04,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2019-11-19 22:35:04,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2019-11-19 22:35:04,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 33 transitions. [2019-11-19 22:35:04,593 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 33 transitions. Word has length 9 [2019-11-19 22:35:04,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-19 22:35:04,593 INFO L462 AbstractCegarLoop]: Abstraction has 26 states and 33 transitions. [2019-11-19 22:35:04,593 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-19 22:35:04,594 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 33 transitions. [2019-11-19 22:35:04,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-11-19 22:35:04,595 INFO L402 BasicCegarLoop]: Found error trace [2019-11-19 22:35:04,595 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-19 22:35:04,595 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-19 22:35:04,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 22:35:04,596 INFO L82 PathProgramCache]: Analyzing trace with hash -1404217650, now seen corresponding path program 1 times [2019-11-19 22:35:04,596 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 22:35:04,596 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1862816323] [2019-11-19 22:35:04,596 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 22:35:04,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:04,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:04,639 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 22:35:04,640 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1862816323] [2019-11-19 22:35:04,640 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-19 22:35:04,640 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-19 22:35:04,640 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [969578046] [2019-11-19 22:35:04,641 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-19 22:35:04,642 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-19 22:35:04,642 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-19 22:35:04,642 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-19 22:35:04,642 INFO L87 Difference]: Start difference. First operand 26 states and 33 transitions. Second operand 5 states. [2019-11-19 22:35:04,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-19 22:35:04,705 INFO L93 Difference]: Finished difference Result 32 states and 40 transitions. [2019-11-19 22:35:04,713 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-19 22:35:04,713 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2019-11-19 22:35:04,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-19 22:35:04,715 INFO L225 Difference]: With dead ends: 32 [2019-11-19 22:35:04,715 INFO L226 Difference]: Without dead ends: 28 [2019-11-19 22:35:04,716 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-11-19 22:35:04,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2019-11-19 22:35:04,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 26. [2019-11-19 22:35:04,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2019-11-19 22:35:04,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 33 transitions. [2019-11-19 22:35:04,723 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 33 transitions. Word has length 10 [2019-11-19 22:35:04,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-19 22:35:04,724 INFO L462 AbstractCegarLoop]: Abstraction has 26 states and 33 transitions. [2019-11-19 22:35:04,724 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-19 22:35:04,724 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 33 transitions. [2019-11-19 22:35:04,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2019-11-19 22:35:04,726 INFO L402 BasicCegarLoop]: Found error trace [2019-11-19 22:35:04,726 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-19 22:35:04,726 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-19 22:35:04,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 22:35:04,726 INFO L82 PathProgramCache]: Analyzing trace with hash -1629927371, now seen corresponding path program 1 times [2019-11-19 22:35:04,727 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 22:35:04,727 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [369745697] [2019-11-19 22:35:04,727 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 22:35:04,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:04,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:04,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:04,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:04,936 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-19 22:35:04,936 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [369745697] [2019-11-19 22:35:04,937 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [15686556] [2019-11-19 22:35:04,937 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_83124591-8f3a-4d57-89f5-da76ab123fa1/bin/uautomizer/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-19 22:35:04,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:04,998 INFO L255 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-19 22:35:05,003 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-19 22:35:05,073 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-19 22:35:05,073 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-19 22:35:05,074 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 10 [2019-11-19 22:35:05,075 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1140510089] [2019-11-19 22:35:05,077 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-11-19 22:35:05,077 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-19 22:35:05,077 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-11-19 22:35:05,079 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2019-11-19 22:35:05,079 INFO L87 Difference]: Start difference. First operand 26 states and 33 transitions. Second operand 10 states. [2019-11-19 22:35:05,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-19 22:35:05,214 INFO L93 Difference]: Finished difference Result 59 states and 83 transitions. [2019-11-19 22:35:05,214 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-19 22:35:05,215 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 22 [2019-11-19 22:35:05,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-19 22:35:05,216 INFO L225 Difference]: With dead ends: 59 [2019-11-19 22:35:05,216 INFO L226 Difference]: Without dead ends: 35 [2019-11-19 22:35:05,217 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2019-11-19 22:35:05,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2019-11-19 22:35:05,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 33. [2019-11-19 22:35:05,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2019-11-19 22:35:05,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 42 transitions. [2019-11-19 22:35:05,230 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 42 transitions. Word has length 22 [2019-11-19 22:35:05,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-19 22:35:05,230 INFO L462 AbstractCegarLoop]: Abstraction has 33 states and 42 transitions. [2019-11-19 22:35:05,230 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-11-19 22:35:05,230 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 42 transitions. [2019-11-19 22:35:05,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2019-11-19 22:35:05,232 INFO L402 BasicCegarLoop]: Found error trace [2019-11-19 22:35:05,232 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-19 22:35:05,433 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-19 22:35:05,433 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-19 22:35:05,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 22:35:05,433 INFO L82 PathProgramCache]: Analyzing trace with hash 1285987244, now seen corresponding path program 1 times [2019-11-19 22:35:05,433 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 22:35:05,434 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2061260160] [2019-11-19 22:35:05,434 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 22:35:05,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:05,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:05,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:05,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:05,547 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-19 22:35:05,547 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2061260160] [2019-11-19 22:35:05,547 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [351562690] [2019-11-19 22:35:05,547 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_83124591-8f3a-4d57-89f5-da76ab123fa1/bin/uautomizer/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-19 22:35:05,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:05,592 INFO L255 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-19 22:35:05,594 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-19 22:35:05,629 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-19 22:35:05,630 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-19 22:35:05,630 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 10 [2019-11-19 22:35:05,630 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [461403114] [2019-11-19 22:35:05,631 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-11-19 22:35:05,631 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-19 22:35:05,631 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-11-19 22:35:05,631 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2019-11-19 22:35:05,632 INFO L87 Difference]: Start difference. First operand 33 states and 42 transitions. Second operand 10 states. [2019-11-19 22:35:05,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-19 22:35:05,834 INFO L93 Difference]: Finished difference Result 55 states and 78 transitions. [2019-11-19 22:35:05,835 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-11-19 22:35:05,835 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 23 [2019-11-19 22:35:05,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-19 22:35:05,838 INFO L225 Difference]: With dead ends: 55 [2019-11-19 22:35:05,838 INFO L226 Difference]: Without dead ends: 51 [2019-11-19 22:35:05,839 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2019-11-19 22:35:05,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2019-11-19 22:35:05,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 48. [2019-11-19 22:35:05,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2019-11-19 22:35:05,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 68 transitions. [2019-11-19 22:35:05,865 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 68 transitions. Word has length 23 [2019-11-19 22:35:05,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-19 22:35:05,865 INFO L462 AbstractCegarLoop]: Abstraction has 48 states and 68 transitions. [2019-11-19 22:35:05,865 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-11-19 22:35:05,865 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 68 transitions. [2019-11-19 22:35:05,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2019-11-19 22:35:05,867 INFO L402 BasicCegarLoop]: Found error trace [2019-11-19 22:35:05,868 INFO L410 BasicCegarLoop]: trace histogram [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] [2019-11-19 22:35:06,081 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-19 22:35:06,082 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-19 22:35:06,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 22:35:06,082 INFO L82 PathProgramCache]: Analyzing trace with hash -649262923, now seen corresponding path program 1 times [2019-11-19 22:35:06,082 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 22:35:06,082 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [78252969] [2019-11-19 22:35:06,082 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 22:35:06,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:06,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:06,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:06,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:06,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:06,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:06,232 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-11-19 22:35:06,232 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [78252969] [2019-11-19 22:35:06,232 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [174029444] [2019-11-19 22:35:06,233 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_83124591-8f3a-4d57-89f5-da76ab123fa1/bin/uautomizer/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-19 22:35:06,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:06,276 INFO L255 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 8 conjunts are in the unsatisfiable core [2019-11-19 22:35:06,278 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-19 22:35:06,342 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-11-19 22:35:06,343 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-19 22:35:06,343 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 12 [2019-11-19 22:35:06,343 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2082261852] [2019-11-19 22:35:06,344 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-11-19 22:35:06,344 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-19 22:35:06,344 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-11-19 22:35:06,344 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2019-11-19 22:35:06,345 INFO L87 Difference]: Start difference. First operand 48 states and 68 transitions. Second operand 12 states. [2019-11-19 22:35:06,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-19 22:35:06,754 INFO L93 Difference]: Finished difference Result 114 states and 187 transitions. [2019-11-19 22:35:06,754 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2019-11-19 22:35:06,755 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 35 [2019-11-19 22:35:06,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-19 22:35:06,758 INFO L225 Difference]: With dead ends: 114 [2019-11-19 22:35:06,758 INFO L226 Difference]: Without dead ends: 68 [2019-11-19 22:35:06,760 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=78, Invalid=302, Unknown=0, NotChecked=0, Total=380 [2019-11-19 22:35:06,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2019-11-19 22:35:06,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 66. [2019-11-19 22:35:06,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2019-11-19 22:35:06,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 98 transitions. [2019-11-19 22:35:06,775 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 98 transitions. Word has length 35 [2019-11-19 22:35:06,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-19 22:35:06,776 INFO L462 AbstractCegarLoop]: Abstraction has 66 states and 98 transitions. [2019-11-19 22:35:06,776 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-11-19 22:35:06,776 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 98 transitions. [2019-11-19 22:35:06,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2019-11-19 22:35:06,779 INFO L402 BasicCegarLoop]: Found error trace [2019-11-19 22:35:06,779 INFO L410 BasicCegarLoop]: trace histogram [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] [2019-11-19 22:35:06,981 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-19 22:35:06,981 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-19 22:35:06,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 22:35:06,981 INFO L82 PathProgramCache]: Analyzing trace with hash 2000747716, now seen corresponding path program 1 times [2019-11-19 22:35:06,981 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 22:35:06,982 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [142876282] [2019-11-19 22:35:06,982 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 22:35:06,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:07,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:07,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:07,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:07,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:07,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:07,086 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 7 proven. 3 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2019-11-19 22:35:07,087 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [142876282] [2019-11-19 22:35:07,087 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1977890910] [2019-11-19 22:35:07,087 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_83124591-8f3a-4d57-89f5-da76ab123fa1/bin/uautomizer/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-19 22:35:07,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:07,132 INFO L255 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 8 conjunts are in the unsatisfiable core [2019-11-19 22:35:07,134 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-19 22:35:07,258 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-11-19 22:35:07,258 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-19 22:35:07,258 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 12 [2019-11-19 22:35:07,258 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [812499670] [2019-11-19 22:35:07,259 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-11-19 22:35:07,259 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-19 22:35:07,259 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-11-19 22:35:07,259 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2019-11-19 22:35:07,260 INFO L87 Difference]: Start difference. First operand 66 states and 98 transitions. Second operand 12 states. [2019-11-19 22:35:07,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-19 22:35:07,538 INFO L93 Difference]: Finished difference Result 147 states and 239 transitions. [2019-11-19 22:35:07,539 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-11-19 22:35:07,539 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 36 [2019-11-19 22:35:07,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-19 22:35:07,544 INFO L225 Difference]: With dead ends: 147 [2019-11-19 22:35:07,544 INFO L226 Difference]: Without dead ends: 83 [2019-11-19 22:35:07,546 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=60, Invalid=212, Unknown=0, NotChecked=0, Total=272 [2019-11-19 22:35:07,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2019-11-19 22:35:07,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 66. [2019-11-19 22:35:07,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2019-11-19 22:35:07,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 96 transitions. [2019-11-19 22:35:07,574 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 96 transitions. Word has length 36 [2019-11-19 22:35:07,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-19 22:35:07,575 INFO L462 AbstractCegarLoop]: Abstraction has 66 states and 96 transitions. [2019-11-19 22:35:07,575 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-11-19 22:35:07,575 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 96 transitions. [2019-11-19 22:35:07,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2019-11-19 22:35:07,582 INFO L402 BasicCegarLoop]: Found error trace [2019-11-19 22:35:07,582 INFO L410 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-19 22:35:07,788 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-19 22:35:07,788 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-19 22:35:07,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 22:35:07,789 INFO L82 PathProgramCache]: Analyzing trace with hash -434541687, now seen corresponding path program 1 times [2019-11-19 22:35:07,789 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 22:35:07,789 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1167990969] [2019-11-19 22:35:07,789 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 22:35:07,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:07,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:07,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:07,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:07,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:07,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:07,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:07,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:07,961 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 6 proven. 11 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2019-11-19 22:35:07,961 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1167990969] [2019-11-19 22:35:07,961 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [330341976] [2019-11-19 22:35:07,961 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_83124591-8f3a-4d57-89f5-da76ab123fa1/bin/uautomizer/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-19 22:35:07,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:07,999 INFO L255 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 10 conjunts are in the unsatisfiable core [2019-11-19 22:35:08,002 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-19 22:35:08,076 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 4 proven. 23 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2019-11-19 22:35:08,076 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-19 22:35:08,077 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9] total 16 [2019-11-19 22:35:08,077 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [923782094] [2019-11-19 22:35:08,077 INFO L442 AbstractCegarLoop]: Interpolant automaton has 16 states [2019-11-19 22:35:08,077 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-19 22:35:08,077 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2019-11-19 22:35:08,078 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=196, Unknown=0, NotChecked=0, Total=240 [2019-11-19 22:35:08,078 INFO L87 Difference]: Start difference. First operand 66 states and 96 transitions. Second operand 16 states. [2019-11-19 22:35:08,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-19 22:35:08,576 INFO L93 Difference]: Finished difference Result 164 states and 279 transitions. [2019-11-19 22:35:08,576 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2019-11-19 22:35:08,576 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 50 [2019-11-19 22:35:08,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-19 22:35:08,578 INFO L225 Difference]: With dead ends: 164 [2019-11-19 22:35:08,578 INFO L226 Difference]: Without dead ends: 100 [2019-11-19 22:35:08,579 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=111, Invalid=489, Unknown=0, NotChecked=0, Total=600 [2019-11-19 22:35:08,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2019-11-19 22:35:08,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 89. [2019-11-19 22:35:08,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2019-11-19 22:35:08,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 145 transitions. [2019-11-19 22:35:08,595 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 145 transitions. Word has length 50 [2019-11-19 22:35:08,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-19 22:35:08,596 INFO L462 AbstractCegarLoop]: Abstraction has 89 states and 145 transitions. [2019-11-19 22:35:08,596 INFO L463 AbstractCegarLoop]: Interpolant automaton has 16 states. [2019-11-19 22:35:08,596 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 145 transitions. [2019-11-19 22:35:08,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2019-11-19 22:35:08,600 INFO L402 BasicCegarLoop]: Found error trace [2019-11-19 22:35:08,601 INFO L410 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-19 22:35:08,804 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-19 22:35:08,804 INFO L410 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-19 22:35:08,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 22:35:08,804 INFO L82 PathProgramCache]: Analyzing trace with hash -1917551255, now seen corresponding path program 1 times [2019-11-19 22:35:08,805 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 22:35:08,805 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2018214004] [2019-11-19 22:35:08,805 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 22:35:08,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:08,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:08,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:08,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:08,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:09,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:09,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:09,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:09,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:09,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:09,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:09,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:09,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:09,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:09,121 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 33 proven. 58 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2019-11-19 22:35:09,123 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2018214004] [2019-11-19 22:35:09,123 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [602144143] [2019-11-19 22:35:09,123 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_83124591-8f3a-4d57-89f5-da76ab123fa1/bin/uautomizer/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-19 22:35:09,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:09,188 INFO L255 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 12 conjunts are in the unsatisfiable core [2019-11-19 22:35:09,197 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-19 22:35:09,316 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 13 proven. 90 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2019-11-19 22:35:09,316 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-19 22:35:09,317 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 10] total 18 [2019-11-19 22:35:09,317 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [23956566] [2019-11-19 22:35:09,318 INFO L442 AbstractCegarLoop]: Interpolant automaton has 18 states [2019-11-19 22:35:09,318 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-19 22:35:09,318 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2019-11-19 22:35:09,318 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=255, Unknown=0, NotChecked=0, Total=306 [2019-11-19 22:35:09,319 INFO L87 Difference]: Start difference. First operand 89 states and 145 transitions. Second operand 18 states. [2019-11-19 22:35:09,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-19 22:35:09,947 INFO L93 Difference]: Finished difference Result 207 states and 388 transitions. [2019-11-19 22:35:09,947 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2019-11-19 22:35:09,947 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 91 [2019-11-19 22:35:09,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-19 22:35:09,950 INFO L225 Difference]: With dead ends: 207 [2019-11-19 22:35:09,950 INFO L226 Difference]: Without dead ends: 114 [2019-11-19 22:35:09,951 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 124 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=143, Invalid=669, Unknown=0, NotChecked=0, Total=812 [2019-11-19 22:35:09,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2019-11-19 22:35:09,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 88. [2019-11-19 22:35:09,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2019-11-19 22:35:09,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 135 transitions. [2019-11-19 22:35:09,984 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 135 transitions. Word has length 91 [2019-11-19 22:35:09,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-19 22:35:09,985 INFO L462 AbstractCegarLoop]: Abstraction has 88 states and 135 transitions. [2019-11-19 22:35:09,985 INFO L463 AbstractCegarLoop]: Interpolant automaton has 18 states. [2019-11-19 22:35:09,985 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 135 transitions. [2019-11-19 22:35:09,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2019-11-19 22:35:09,992 INFO L402 BasicCegarLoop]: Found error trace [2019-11-19 22:35:09,992 INFO L410 BasicCegarLoop]: trace histogram [10, 10, 7, 7, 7, 7, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1] [2019-11-19 22:35:10,196 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-19 22:35:10,196 INFO L410 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-19 22:35:10,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 22:35:10,196 INFO L82 PathProgramCache]: Analyzing trace with hash -463941571, now seen corresponding path program 1 times [2019-11-19 22:35:10,197 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 22:35:10,197 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1140786517] [2019-11-19 22:35:10,197 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 22:35:10,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:10,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:10,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:10,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:10,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:10,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:10,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:10,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:10,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:10,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:10,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:10,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:10,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:10,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:10,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:10,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:10,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:10,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:10,494 INFO L134 CoverageAnalysis]: Checked inductivity of 358 backedges. 53 proven. 117 refuted. 0 times theorem prover too weak. 188 trivial. 0 not checked. [2019-11-19 22:35:10,494 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1140786517] [2019-11-19 22:35:10,495 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1366576375] [2019-11-19 22:35:10,495 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_83124591-8f3a-4d57-89f5-da76ab123fa1/bin/uautomizer/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-19 22:35:10,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:10,558 INFO L255 TraceCheckSpWp]: Trace formula consists of 266 conjuncts, 14 conjunts are in the unsatisfiable core [2019-11-19 22:35:10,565 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-19 22:35:10,719 INFO L134 CoverageAnalysis]: Checked inductivity of 358 backedges. 24 proven. 155 refuted. 0 times theorem prover too weak. 179 trivial. 0 not checked. [2019-11-19 22:35:10,719 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-19 22:35:10,719 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 11] total 21 [2019-11-19 22:35:10,721 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1887375256] [2019-11-19 22:35:10,723 INFO L442 AbstractCegarLoop]: Interpolant automaton has 21 states [2019-11-19 22:35:10,723 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-19 22:35:10,723 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2019-11-19 22:35:10,723 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=356, Unknown=0, NotChecked=0, Total=420 [2019-11-19 22:35:10,724 INFO L87 Difference]: Start difference. First operand 88 states and 135 transitions. Second operand 21 states. [2019-11-19 22:35:11,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-19 22:35:11,520 INFO L93 Difference]: Finished difference Result 244 states and 473 transitions. [2019-11-19 22:35:11,521 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2019-11-19 22:35:11,521 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 119 [2019-11-19 22:35:11,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-19 22:35:11,523 INFO L225 Difference]: With dead ends: 244 [2019-11-19 22:35:11,523 INFO L226 Difference]: Without dead ends: 152 [2019-11-19 22:35:11,524 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 261 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=232, Invalid=1100, Unknown=0, NotChecked=0, Total=1332 [2019-11-19 22:35:11,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2019-11-19 22:35:11,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 134. [2019-11-19 22:35:11,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 134 states. [2019-11-19 22:35:11,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 224 transitions. [2019-11-19 22:35:11,545 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 224 transitions. Word has length 119 [2019-11-19 22:35:11,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-19 22:35:11,545 INFO L462 AbstractCegarLoop]: Abstraction has 134 states and 224 transitions. [2019-11-19 22:35:11,545 INFO L463 AbstractCegarLoop]: Interpolant automaton has 21 states. [2019-11-19 22:35:11,546 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 224 transitions. [2019-11-19 22:35:11,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2019-11-19 22:35:11,550 INFO L402 BasicCegarLoop]: Found error trace [2019-11-19 22:35:11,550 INFO L410 BasicCegarLoop]: trace histogram [21, 21, 16, 16, 16, 15, 10, 10, 10, 10, 10, 10, 10, 8, 8, 8, 8, 8, 8, 8, 8, 5, 5, 1, 1, 1, 1, 1, 1, 1] [2019-11-19 22:35:11,753 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-19 22:35:11,753 INFO L410 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-19 22:35:11,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 22:35:11,754 INFO L82 PathProgramCache]: Analyzing trace with hash 48690978, now seen corresponding path program 2 times [2019-11-19 22:35:11,754 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 22:35:11,754 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [261183667] [2019-11-19 22:35:11,754 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 22:35:11,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:11,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:11,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:11,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:12,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:12,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:12,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:12,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:12,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:12,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:12,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:12,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:12,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:12,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:12,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:12,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:12,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:12,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:12,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:12,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:12,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:12,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:12,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:12,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:12,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:12,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:12,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:12,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:12,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:12,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:12,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:12,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:12,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:12,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:12,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:12,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:12,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:12,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:12,878 INFO L134 CoverageAnalysis]: Checked inductivity of 1837 backedges. 539 proven. 492 refuted. 0 times theorem prover too weak. 806 trivial. 0 not checked. [2019-11-19 22:35:12,879 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [261183667] [2019-11-19 22:35:12,879 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [797599461] [2019-11-19 22:35:12,879 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_83124591-8f3a-4d57-89f5-da76ab123fa1/bin/uautomizer/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-19 22:35:12,963 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-11-19 22:35:12,963 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-19 22:35:12,964 INFO L255 TraceCheckSpWp]: Trace formula consists of 570 conjuncts, 16 conjunts are in the unsatisfiable core [2019-11-19 22:35:12,970 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-19 22:35:13,178 INFO L134 CoverageAnalysis]: Checked inductivity of 1837 backedges. 72 proven. 513 refuted. 0 times theorem prover too weak. 1252 trivial. 0 not checked. [2019-11-19 22:35:13,179 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-19 22:35:13,179 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 12] total 39 [2019-11-19 22:35:13,179 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1868986567] [2019-11-19 22:35:13,180 INFO L442 AbstractCegarLoop]: Interpolant automaton has 39 states [2019-11-19 22:35:13,180 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-19 22:35:13,181 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2019-11-19 22:35:13,182 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=185, Invalid=1297, Unknown=0, NotChecked=0, Total=1482 [2019-11-19 22:35:13,182 INFO L87 Difference]: Start difference. First operand 134 states and 224 transitions. Second operand 39 states. [2019-11-19 22:35:15,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-19 22:35:15,020 INFO L93 Difference]: Finished difference Result 353 states and 773 transitions. [2019-11-19 22:35:15,021 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2019-11-19 22:35:15,021 INFO L78 Accepts]: Start accepts. Automaton has 39 states. Word has length 256 [2019-11-19 22:35:15,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-19 22:35:15,024 INFO L225 Difference]: With dead ends: 353 [2019-11-19 22:35:15,024 INFO L226 Difference]: Without dead ends: 214 [2019-11-19 22:35:15,028 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 399 GetRequests, 329 SyntacticMatches, 1 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1473 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=596, Invalid=4374, Unknown=0, NotChecked=0, Total=4970 [2019-11-19 22:35:15,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2019-11-19 22:35:15,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 153. [2019-11-19 22:35:15,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 153 states. [2019-11-19 22:35:15,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 212 transitions. [2019-11-19 22:35:15,070 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 212 transitions. Word has length 256 [2019-11-19 22:35:15,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-19 22:35:15,072 INFO L462 AbstractCegarLoop]: Abstraction has 153 states and 212 transitions. [2019-11-19 22:35:15,072 INFO L463 AbstractCegarLoop]: Interpolant automaton has 39 states. [2019-11-19 22:35:15,072 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 212 transitions. [2019-11-19 22:35:15,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 365 [2019-11-19 22:35:15,078 INFO L402 BasicCegarLoop]: Found error trace [2019-11-19 22:35:15,079 INFO L410 BasicCegarLoop]: trace histogram [27, 27, 26, 26, 22, 21, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 9, 8, 5, 5, 1, 1, 1, 1, 1, 1] [2019-11-19 22:35:15,282 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-19 22:35:15,282 INFO L410 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-19 22:35:15,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 22:35:15,282 INFO L82 PathProgramCache]: Analyzing trace with hash -912985296, now seen corresponding path program 3 times [2019-11-19 22:35:15,283 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 22:35:15,289 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1394644362] [2019-11-19 22:35:15,290 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 22:35:15,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:15,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:15,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:15,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:15,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:15,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:15,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:15,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:15,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:15,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:15,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:15,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:15,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:15,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:15,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:15,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:15,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:15,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:15,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:15,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:15,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:15,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:15,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:15,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:16,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:16,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:16,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:16,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:16,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:16,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:16,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:16,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:16,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:16,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:16,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:16,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:16,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:16,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:16,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:16,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:16,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:16,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:16,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:16,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:16,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:16,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:16,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:16,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:16,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:16,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:16,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:16,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:16,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:16,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:16,339 INFO L134 CoverageAnalysis]: Checked inductivity of 3769 backedges. 279 proven. 859 refuted. 0 times theorem prover too weak. 2631 trivial. 0 not checked. [2019-11-19 22:35:16,340 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1394644362] [2019-11-19 22:35:16,340 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [363511962] [2019-11-19 22:35:16,340 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_83124591-8f3a-4d57-89f5-da76ab123fa1/bin/uautomizer/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-19 22:35:16,416 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2019-11-19 22:35:16,417 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-19 22:35:16,418 INFO L255 TraceCheckSpWp]: Trace formula consists of 266 conjuncts, 12 conjunts are in the unsatisfiable core [2019-11-19 22:35:16,424 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-19 22:35:16,646 INFO L134 CoverageAnalysis]: Checked inductivity of 3769 backedges. 554 proven. 91 refuted. 0 times theorem prover too weak. 3124 trivial. 0 not checked. [2019-11-19 22:35:16,646 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-19 22:35:16,646 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 10] total 29 [2019-11-19 22:35:16,647 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1337074460] [2019-11-19 22:35:16,649 INFO L442 AbstractCegarLoop]: Interpolant automaton has 29 states [2019-11-19 22:35:16,649 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-19 22:35:16,649 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2019-11-19 22:35:16,649 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=700, Unknown=0, NotChecked=0, Total=812 [2019-11-19 22:35:16,650 INFO L87 Difference]: Start difference. First operand 153 states and 212 transitions. Second operand 29 states. [2019-11-19 22:35:17,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-19 22:35:17,671 INFO L93 Difference]: Finished difference Result 343 states and 516 transitions. [2019-11-19 22:35:17,672 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2019-11-19 22:35:17,672 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 364 [2019-11-19 22:35:17,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-19 22:35:17,675 INFO L225 Difference]: With dead ends: 343 [2019-11-19 22:35:17,675 INFO L226 Difference]: Without dead ends: 207 [2019-11-19 22:35:17,677 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 511 GetRequests, 463 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 636 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=332, Invalid=2118, Unknown=0, NotChecked=0, Total=2450 [2019-11-19 22:35:17,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2019-11-19 22:35:17,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 172. [2019-11-19 22:35:17,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 172 states. [2019-11-19 22:35:17,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 237 transitions. [2019-11-19 22:35:17,699 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 237 transitions. Word has length 364 [2019-11-19 22:35:17,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-19 22:35:17,700 INFO L462 AbstractCegarLoop]: Abstraction has 172 states and 237 transitions. [2019-11-19 22:35:17,700 INFO L463 AbstractCegarLoop]: Interpolant automaton has 29 states. [2019-11-19 22:35:17,700 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 237 transitions. [2019-11-19 22:35:17,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 814 [2019-11-19 22:35:17,722 INFO L402 BasicCegarLoop]: Found error trace [2019-11-19 22:35:17,722 INFO L410 BasicCegarLoop]: trace histogram [61, 61, 58, 58, 48, 48, 30, 30, 30, 30, 30, 30, 30, 29, 29, 29, 29, 29, 29, 29, 19, 18, 13, 10, 1, 1, 1, 1, 1, 1] [2019-11-19 22:35:17,934 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-19 22:35:17,934 INFO L410 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-19 22:35:17,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 22:35:17,934 INFO L82 PathProgramCache]: Analyzing trace with hash -912022056, now seen corresponding path program 4 times [2019-11-19 22:35:17,935 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 22:35:17,935 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [779600127] [2019-11-19 22:35:17,935 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 22:35:18,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:18,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:18,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:18,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:18,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:18,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:18,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:19,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:19,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:19,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:19,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:19,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:19,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:19,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:19,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:19,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:19,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:19,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:19,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:19,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:19,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:19,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:19,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:19,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:19,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:19,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:19,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:19,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:19,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:19,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:19,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:19,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:19,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:19,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:19,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:19,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:19,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:19,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:19,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:19,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:19,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:19,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:19,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:19,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:19,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:19,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:19,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:19,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:19,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:19,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:19,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:19,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:19,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:19,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:19,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:19,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:19,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:20,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:20,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:20,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:20,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:20,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:20,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:20,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:20,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:20,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:20,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:20,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:20,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:20,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:20,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:20,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:20,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:20,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:20,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:20,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:20,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:20,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:20,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:20,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:20,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:20,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:20,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:20,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:20,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:20,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:20,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:20,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:20,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:20,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:20,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:20,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:20,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:20,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:20,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:20,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:20,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:20,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:20,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:20,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:20,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:20,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:20,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:20,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:20,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:20,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:20,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:20,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:20,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:20,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:20,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:20,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:20,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:20,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:20,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:20,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:20,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:20,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:20,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:20,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:21,601 INFO L134 CoverageAnalysis]: Checked inductivity of 19552 backedges. 1662 proven. 3876 refuted. 0 times theorem prover too weak. 14014 trivial. 0 not checked. [2019-11-19 22:35:21,601 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [779600127] [2019-11-19 22:35:21,601 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1506191780] [2019-11-19 22:35:21,602 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_83124591-8f3a-4d57-89f5-da76ab123fa1/bin/uautomizer/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-19 22:35:21,824 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-11-19 22:35:21,825 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-19 22:35:21,828 INFO L255 TraceCheckSpWp]: Trace formula consists of 1448 conjuncts, 17 conjunts are in the unsatisfiable core [2019-11-19 22:35:21,841 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-19 22:35:22,397 INFO L134 CoverageAnalysis]: Checked inductivity of 19552 backedges. 675 proven. 1590 refuted. 0 times theorem prover too weak. 17287 trivial. 0 not checked. [2019-11-19 22:35:22,397 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-19 22:35:22,398 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [44, 13] total 48 [2019-11-19 22:35:22,398 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2094138272] [2019-11-19 22:35:22,401 INFO L442 AbstractCegarLoop]: Interpolant automaton has 48 states [2019-11-19 22:35:22,401 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-19 22:35:22,401 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2019-11-19 22:35:22,402 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=285, Invalid=1971, Unknown=0, NotChecked=0, Total=2256 [2019-11-19 22:35:22,402 INFO L87 Difference]: Start difference. First operand 172 states and 237 transitions. Second operand 48 states. [2019-11-19 22:35:24,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-19 22:35:24,280 INFO L93 Difference]: Finished difference Result 409 states and 682 transitions. [2019-11-19 22:35:24,280 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2019-11-19 22:35:24,280 INFO L78 Accepts]: Start accepts. Automaton has 48 states. Word has length 813 [2019-11-19 22:35:24,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-19 22:35:24,283 INFO L225 Difference]: With dead ends: 409 [2019-11-19 22:35:24,283 INFO L226 Difference]: Without dead ends: 176 [2019-11-19 22:35:24,287 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 1118 GetRequests, 1046 SyntacticMatches, 1 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1984 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=633, Invalid=4623, Unknown=0, NotChecked=0, Total=5256 [2019-11-19 22:35:24,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2019-11-19 22:35:24,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 161. [2019-11-19 22:35:24,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 161 states. [2019-11-19 22:35:24,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 191 transitions. [2019-11-19 22:35:24,302 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 191 transitions. Word has length 813 [2019-11-19 22:35:24,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-19 22:35:24,303 INFO L462 AbstractCegarLoop]: Abstraction has 161 states and 191 transitions. [2019-11-19 22:35:24,303 INFO L463 AbstractCegarLoop]: Interpolant automaton has 48 states. [2019-11-19 22:35:24,303 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 191 transitions. [2019-11-19 22:35:24,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 487 [2019-11-19 22:35:24,312 INFO L402 BasicCegarLoop]: Found error trace [2019-11-19 22:35:24,312 INFO L410 BasicCegarLoop]: trace histogram [37, 37, 34, 34, 29, 28, 18, 18, 18, 18, 18, 18, 18, 17, 17, 17, 17, 17, 17, 17, 12, 10, 8, 6, 1, 1, 1, 1, 1, 1] [2019-11-19 22:35:24,517 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-19 22:35:24,518 INFO L410 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-19 22:35:24,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 22:35:24,519 INFO L82 PathProgramCache]: Analyzing trace with hash 848099483, now seen corresponding path program 5 times [2019-11-19 22:35:24,519 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 22:35:24,519 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [990838049] [2019-11-19 22:35:24,519 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 22:35:24,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:24,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:24,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:24,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:24,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:25,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:25,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:25,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:25,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:25,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:25,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:25,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:25,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:25,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:25,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:25,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:25,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:25,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:25,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:25,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:25,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:25,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:25,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:25,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:25,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:25,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:25,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:25,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:25,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:25,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:25,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:25,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:25,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:25,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:25,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:25,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:25,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:25,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:25,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:25,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:25,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:25,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:25,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:25,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:25,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:25,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:25,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:25,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:25,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:25,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:25,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:25,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:25,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:25,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:25,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:25,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:25,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:25,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:25,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:25,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:25,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:25,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:25,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:25,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:25,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:25,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:25,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:25,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:25,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:25,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:25,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:25,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:26,158 INFO L134 CoverageAnalysis]: Checked inductivity of 6848 backedges. 1442 proven. 1490 refuted. 0 times theorem prover too weak. 3916 trivial. 0 not checked. [2019-11-19 22:35:26,158 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [990838049] [2019-11-19 22:35:26,159 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [295958176] [2019-11-19 22:35:26,159 INFO L92 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_83124591-8f3a-4d57-89f5-da76ab123fa1/bin/uautomizer/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-19 22:35:26,347 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 24 check-sat command(s) [2019-11-19 22:35:26,347 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-19 22:35:26,349 INFO L255 TraceCheckSpWp]: Trace formula consists of 850 conjuncts, 16 conjunts are in the unsatisfiable core [2019-11-19 22:35:26,358 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-19 22:35:26,676 INFO L134 CoverageAnalysis]: Checked inductivity of 6848 backedges. 3907 proven. 174 refuted. 0 times theorem prover too weak. 2767 trivial. 0 not checked. [2019-11-19 22:35:26,676 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-19 22:35:26,677 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 14] total 35 [2019-11-19 22:35:26,677 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [628891667] [2019-11-19 22:35:26,678 INFO L442 AbstractCegarLoop]: Interpolant automaton has 35 states [2019-11-19 22:35:26,678 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-19 22:35:26,679 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2019-11-19 22:35:26,679 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=156, Invalid=1034, Unknown=0, NotChecked=0, Total=1190 [2019-11-19 22:35:26,679 INFO L87 Difference]: Start difference. First operand 161 states and 191 transitions. Second operand 35 states. [2019-11-19 22:35:27,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-19 22:35:27,796 INFO L93 Difference]: Finished difference Result 325 states and 388 transitions. [2019-11-19 22:35:27,797 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2019-11-19 22:35:27,797 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 486 [2019-11-19 22:35:27,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-19 22:35:27,799 INFO L225 Difference]: With dead ends: 325 [2019-11-19 22:35:27,799 INFO L226 Difference]: Without dead ends: 181 [2019-11-19 22:35:27,801 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 687 GetRequests, 638 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 722 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=343, Invalid=2207, Unknown=0, NotChecked=0, Total=2550 [2019-11-19 22:35:27,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2019-11-19 22:35:27,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 161. [2019-11-19 22:35:27,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 161 states. [2019-11-19 22:35:27,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 187 transitions. [2019-11-19 22:35:27,812 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 187 transitions. Word has length 486 [2019-11-19 22:35:27,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-19 22:35:27,813 INFO L462 AbstractCegarLoop]: Abstraction has 161 states and 187 transitions. [2019-11-19 22:35:27,813 INFO L463 AbstractCegarLoop]: Interpolant automaton has 35 states. [2019-11-19 22:35:27,813 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 187 transitions. [2019-11-19 22:35:27,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 569 [2019-11-19 22:35:27,817 INFO L402 BasicCegarLoop]: Found error trace [2019-11-19 22:35:27,817 INFO L410 BasicCegarLoop]: trace histogram [42, 42, 41, 41, 34, 33, 21, 21, 21, 21, 21, 21, 21, 20, 20, 20, 20, 20, 20, 20, 14, 12, 8, 8, 1, 1, 1, 1, 1, 1] [2019-11-19 22:35:28,025 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-19 22:35:28,025 INFO L410 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-19 22:35:28,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 22:35:28,025 INFO L82 PathProgramCache]: Analyzing trace with hash 932975275, now seen corresponding path program 6 times [2019-11-19 22:35:28,025 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 22:35:28,025 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [908930484] [2019-11-19 22:35:28,025 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 22:35:28,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:28,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:28,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:28,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:28,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:28,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:28,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:28,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:28,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:28,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:28,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:28,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:28,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:28,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:28,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:28,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:28,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:28,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:28,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:28,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:28,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:28,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:28,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:28,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:28,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:28,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:28,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:28,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:28,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:28,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:28,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:28,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:28,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:28,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:28,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:28,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:28,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:28,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:28,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:28,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:28,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:28,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:28,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:28,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:28,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:29,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:29,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:29,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:29,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:29,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:29,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:29,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:29,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:29,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:29,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:29,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:29,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:29,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:29,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:29,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:29,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:29,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:29,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:29,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:29,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:29,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:29,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:29,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:29,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:29,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:29,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:29,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:29,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:29,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:29,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:29,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:29,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:29,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:29,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:29,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:29,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:29,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:29,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:29,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:29,898 INFO L134 CoverageAnalysis]: Checked inductivity of 9413 backedges. 918 proven. 1776 refuted. 0 times theorem prover too weak. 6719 trivial. 0 not checked. [2019-11-19 22:35:29,898 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [908930484] [2019-11-19 22:35:29,898 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [808625521] [2019-11-19 22:35:29,898 INFO L92 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_83124591-8f3a-4d57-89f5-da76ab123fa1/bin/uautomizer/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-19 22:35:30,152 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 36 check-sat command(s) [2019-11-19 22:35:30,152 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-19 22:35:30,154 INFO L255 TraceCheckSpWp]: Trace formula consists of 1263 conjuncts, 12 conjunts are in the unsatisfiable core [2019-11-19 22:35:30,162 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-19 22:35:30,392 INFO L134 CoverageAnalysis]: Checked inductivity of 9413 backedges. 874 proven. 170 refuted. 0 times theorem prover too weak. 8369 trivial. 0 not checked. [2019-11-19 22:35:30,392 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-19 22:35:30,393 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 10] total 37 [2019-11-19 22:35:30,393 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1040111087] [2019-11-19 22:35:30,394 INFO L442 AbstractCegarLoop]: Interpolant automaton has 37 states [2019-11-19 22:35:30,394 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-19 22:35:30,395 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2019-11-19 22:35:30,395 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=1159, Unknown=0, NotChecked=0, Total=1332 [2019-11-19 22:35:30,395 INFO L87 Difference]: Start difference. First operand 161 states and 187 transitions. Second operand 37 states. [2019-11-19 22:35:31,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-19 22:35:31,628 INFO L93 Difference]: Finished difference Result 241 states and 285 transitions. [2019-11-19 22:35:31,629 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2019-11-19 22:35:31,629 INFO L78 Accepts]: Start accepts. Automaton has 37 states. Word has length 568 [2019-11-19 22:35:31,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-19 22:35:31,632 INFO L225 Difference]: With dead ends: 241 [2019-11-19 22:35:31,632 INFO L226 Difference]: Without dead ends: 182 [2019-11-19 22:35:31,633 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 787 GetRequests, 728 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1166 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=481, Invalid=3179, Unknown=0, NotChecked=0, Total=3660 [2019-11-19 22:35:31,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2019-11-19 22:35:31,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 152. [2019-11-19 22:35:31,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 152 states. [2019-11-19 22:35:31,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 170 transitions. [2019-11-19 22:35:31,649 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 170 transitions. Word has length 568 [2019-11-19 22:35:31,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-19 22:35:31,650 INFO L462 AbstractCegarLoop]: Abstraction has 152 states and 170 transitions. [2019-11-19 22:35:31,650 INFO L463 AbstractCegarLoop]: Interpolant automaton has 37 states. [2019-11-19 22:35:31,650 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 170 transitions. [2019-11-19 22:35:31,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 460 [2019-11-19 22:35:31,653 INFO L402 BasicCegarLoop]: Found error trace [2019-11-19 22:35:31,653 INFO L410 BasicCegarLoop]: trace histogram [34, 34, 33, 33, 27, 27, 17, 17, 17, 17, 17, 17, 17, 16, 16, 16, 16, 16, 16, 16, 11, 10, 7, 6, 1, 1, 1, 1, 1, 1] [2019-11-19 22:35:31,866 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-19 22:35:31,867 INFO L410 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-19 22:35:31,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 22:35:31,867 INFO L82 PathProgramCache]: Analyzing trace with hash 706303904, now seen corresponding path program 7 times [2019-11-19 22:35:31,867 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 22:35:31,867 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [234971832] [2019-11-19 22:35:31,868 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 22:35:31,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:32,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:32,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:32,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:32,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:32,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:32,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:32,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:32,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:32,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:32,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:32,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:32,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:32,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:33,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:33,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:33,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:33,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:33,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:33,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:33,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:33,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:33,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:33,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:33,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:33,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:33,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:33,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:33,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:33,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:33,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:33,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:33,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:33,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:33,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:33,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:33,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:33,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:33,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:33,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:33,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:33,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:33,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:33,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:34,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:34,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:34,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:34,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:34,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:34,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:34,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:34,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:34,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:34,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:34,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:34,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:34,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:34,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:34,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:34,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:34,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:34,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:34,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:34,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:34,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:34,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:34,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:34,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:34,825 INFO L134 CoverageAnalysis]: Checked inductivity of 6082 backedges. 0 proven. 2033 refuted. 0 times theorem prover too weak. 4049 trivial. 0 not checked. [2019-11-19 22:35:34,825 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [234971832] [2019-11-19 22:35:34,825 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1720228836] [2019-11-19 22:35:34,825 INFO L92 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_83124591-8f3a-4d57-89f5-da76ab123fa1/bin/uautomizer/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-19 22:35:34,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:35:34,985 INFO L255 TraceCheckSpWp]: Trace formula consists of 1021 conjuncts, 271 conjunts are in the unsatisfiable core [2019-11-19 22:35:34,994 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-19 22:35:37,386 INFO L134 CoverageAnalysis]: Checked inductivity of 6082 backedges. 0 proven. 2033 refuted. 0 times theorem prover too weak. 4049 trivial. 0 not checked. [2019-11-19 22:35:37,387 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-19 22:35:37,387 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 40] total 52 [2019-11-19 22:35:37,387 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1160143052] [2019-11-19 22:35:37,389 INFO L442 AbstractCegarLoop]: Interpolant automaton has 52 states [2019-11-19 22:35:37,389 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-19 22:35:37,390 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2019-11-19 22:35:37,391 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=2527, Unknown=0, NotChecked=0, Total=2652 [2019-11-19 22:35:37,391 INFO L87 Difference]: Start difference. First operand 152 states and 170 transitions. Second operand 52 states. [2019-11-19 22:35:38,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-19 22:35:38,291 INFO L93 Difference]: Finished difference Result 152 states and 170 transitions. [2019-11-19 22:35:38,292 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2019-11-19 22:35:38,292 INFO L78 Accepts]: Start accepts. Automaton has 52 states. Word has length 459 [2019-11-19 22:35:38,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-19 22:35:38,293 INFO L225 Difference]: With dead ends: 152 [2019-11-19 22:35:38,293 INFO L226 Difference]: Without dead ends: 0 [2019-11-19 22:35:38,295 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 729 GetRequests, 644 SyntacticMatches, 35 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 273 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=125, Invalid=2527, Unknown=0, NotChecked=0, Total=2652 [2019-11-19 22:35:38,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-19 22:35:38,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-19 22:35:38,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-19 22:35:38,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-19 22:35:38,296 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 459 [2019-11-19 22:35:38,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-19 22:35:38,296 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-19 22:35:38,296 INFO L463 AbstractCegarLoop]: Interpolant automaton has 52 states. [2019-11-19 22:35:38,297 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-19 22:35:38,297 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-19 22:35:38,497 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-19 22:35:38,501 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-11-19 22:35:39,835 WARN L191 SmtUtils]: Spent 373.00 ms on a formula simplification. DAG size of input: 145 DAG size of output: 6 [2019-11-19 22:35:40,131 WARN L191 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 1 [2019-11-19 22:35:40,892 WARN L191 SmtUtils]: Spent 756.00 ms on a formula simplification. DAG size of input: 159 DAG size of output: 40 [2019-11-19 22:35:41,158 WARN L191 SmtUtils]: Spent 262.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 6 [2019-11-19 22:35:41,750 WARN L191 SmtUtils]: Spent 587.00 ms on a formula simplification. DAG size of input: 160 DAG size of output: 32 [2019-11-19 22:35:41,753 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-11-19 22:35:41,753 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2019-11-19 22:35:41,753 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-11-19 22:35:41,753 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 39) no Hoare annotation was computed. [2019-11-19 22:35:41,753 INFO L440 ceAbstractionStarter]: At program point L41(lines 35 42) the Hoare annotation is: (<= 8 ULTIMATE.start_main_~x~0) [2019-11-19 22:35:41,754 INFO L444 ceAbstractionStarter]: For program point L39(line 39) no Hoare annotation was computed. [2019-11-19 22:35:41,754 INFO L444 ceAbstractionStarter]: For program point L38(lines 38 40) no Hoare annotation was computed. [2019-11-19 22:35:41,754 INFO L440 ceAbstractionStarter]: At program point L37(line 37) the Hoare annotation is: (and (<= ULTIMATE.start_main_~x~0 8) (<= 8 ULTIMATE.start_main_~x~0)) [2019-11-19 22:35:41,754 INFO L444 ceAbstractionStarter]: For program point L37-1(line 37) no Hoare annotation was computed. [2019-11-19 22:35:41,754 INFO L444 ceAbstractionStarter]: For program point L38-2(lines 38 40) no Hoare annotation was computed. [2019-11-19 22:35:41,754 INFO L447 ceAbstractionStarter]: At program point fibo2ENTRY(lines 17 25) the Hoare annotation is: true [2019-11-19 22:35:41,754 INFO L440 ceAbstractionStarter]: At program point L23(line 23) the Hoare annotation is: (and (< 1 fibo2_~n) (= fibo2_~n |fibo2_#in~n|)) [2019-11-19 22:35:41,754 INFO L444 ceAbstractionStarter]: For program point L23-1(line 23) no Hoare annotation was computed. [2019-11-19 22:35:41,755 INFO L440 ceAbstractionStarter]: At program point L23-2(line 23) the Hoare annotation is: (let ((.cse4 (= fibo2_~n |fibo2_#in~n|)) (.cse0 (<= |fibo2_#in~n| 5))) (let ((.cse1 (and .cse4 .cse0 (<= 4 fibo2_~n))) (.cse3 (<= |fibo2_#in~n| 4)) (.cse2 (and (<= 6 fibo2_~n) .cse4))) (and (or (and (<= 8 |fibo2_#t~ret2|) (<= |fibo2_#t~ret2| 8)) (<= 8 fibo2_~n) .cse0) (< 1 fibo2_~n) (or (not (<= 5 |fibo2_#in~n|)) .cse1 (not (<= |fibo2_#in~n| 6))) (or .cse2 (and (<= 1 |fibo2_#t~ret2|) (<= |fibo2_#t~ret2| 1)) .cse1) (or (<= fibo2_~n 3) (not .cse3)) (or .cse3 .cse2 (and (<= 3 |fibo2_#t~ret2|) (<= |fibo2_#t~ret2| 3))) .cse4))) [2019-11-19 22:35:41,755 INFO L444 ceAbstractionStarter]: For program point L20(lines 20 24) no Hoare annotation was computed. [2019-11-19 22:35:41,755 INFO L444 ceAbstractionStarter]: For program point L23-3(line 23) no Hoare annotation was computed. [2019-11-19 22:35:41,755 INFO L444 ceAbstractionStarter]: For program point L18(lines 18 24) no Hoare annotation was computed. [2019-11-19 22:35:41,755 INFO L444 ceAbstractionStarter]: For program point fibo2FINAL(lines 17 25) no Hoare annotation was computed. [2019-11-19 22:35:41,755 INFO L444 ceAbstractionStarter]: For program point fibo2EXIT(lines 17 25) no Hoare annotation was computed. [2019-11-19 22:35:41,755 INFO L447 ceAbstractionStarter]: At program point fibo1ENTRY(lines 7 15) the Hoare annotation is: true [2019-11-19 22:35:41,755 INFO L440 ceAbstractionStarter]: At program point L13(line 13) the Hoare annotation is: (and (< 1 fibo1_~n) (= fibo1_~n |fibo1_#in~n|)) [2019-11-19 22:35:41,756 INFO L444 ceAbstractionStarter]: For program point L13-1(line 13) no Hoare annotation was computed. [2019-11-19 22:35:41,756 INFO L440 ceAbstractionStarter]: At program point L13-2(line 13) the Hoare annotation is: (and (or (<= 6 fibo1_~n) (and (<= 1 |fibo1_#t~ret0|) (<= |fibo1_#t~ret0| 1))) (< 1 fibo1_~n) (or (<= 7 fibo1_~n) (and (<= |fibo1_#t~ret0| 5) (<= 5 |fibo1_#t~ret0|)) (not (<= 3 |fibo1_#in~n|))) (= fibo1_~n |fibo1_#in~n|) (or (<= 9 |fibo1_#in~n|) (<= |fibo1_#in~n| 7) (and (<= 13 |fibo1_#t~ret0|) (<= |fibo1_#t~ret0| 13)))) [2019-11-19 22:35:41,756 INFO L444 ceAbstractionStarter]: For program point fibo1FINAL(lines 7 15) no Hoare annotation was computed. [2019-11-19 22:35:41,756 INFO L444 ceAbstractionStarter]: For program point L10(lines 10 14) no Hoare annotation was computed. [2019-11-19 22:35:41,756 INFO L444 ceAbstractionStarter]: For program point L13-3(line 13) no Hoare annotation was computed. [2019-11-19 22:35:41,756 INFO L444 ceAbstractionStarter]: For program point L8(lines 8 14) no Hoare annotation was computed. [2019-11-19 22:35:41,756 INFO L444 ceAbstractionStarter]: For program point fibo1EXIT(lines 7 15) no Hoare annotation was computed. [2019-11-19 22:35:41,774 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 10:35:41 BoogieIcfgContainer [2019-11-19 22:35:41,774 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-19 22:35:41,774 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-19 22:35:41,775 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-19 22:35:41,775 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-19 22:35:41,775 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 10:35:04" (3/4) ... [2019-11-19 22:35:41,779 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-11-19 22:35:41,787 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure fibo2 [2019-11-19 22:35:41,787 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure fibo1 [2019-11-19 22:35:41,793 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2019-11-19 22:35:41,793 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2019-11-19 22:35:41,850 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_83124591-8f3a-4d57-89f5-da76ab123fa1/bin/uautomizer/witness.graphml [2019-11-19 22:35:41,850 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-19 22:35:41,852 INFO L168 Benchmark]: Toolchain (without parser) took 38277.70 ms. Allocated memory was 1.0 GB in the beginning and 2.2 GB in the end (delta: 1.2 GB). Free memory was 948.8 MB in the beginning and 1.8 GB in the end (delta: -807.3 MB). Peak memory consumption was 398.6 MB. Max. memory is 11.5 GB. [2019-11-19 22:35:41,853 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 1.0 GB. Free memory is still 967.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-19 22:35:41,854 INFO L168 Benchmark]: CACSL2BoogieTranslator took 252.84 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 196.6 MB). Free memory was 948.8 MB in the beginning and 1.2 GB in the end (delta: -242.7 MB). Peak memory consumption was 22.9 MB. Max. memory is 11.5 GB. [2019-11-19 22:35:41,854 INFO L168 Benchmark]: Boogie Procedure Inliner took 27.25 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-19 22:35:41,855 INFO L168 Benchmark]: Boogie Preprocessor took 15.93 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-19 22:35:41,855 INFO L168 Benchmark]: RCFGBuilder took 310.91 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 18.3 MB). Peak memory consumption was 18.3 MB. Max. memory is 11.5 GB. [2019-11-19 22:35:41,856 INFO L168 Benchmark]: TraceAbstraction took 37590.68 ms. Allocated memory was 1.2 GB in the beginning and 2.2 GB in the end (delta: 1.0 GB). Free memory was 1.2 GB in the beginning and 1.8 GB in the end (delta: -591.4 MB). Peak memory consumption was 1.3 GB. Max. memory is 11.5 GB. [2019-11-19 22:35:41,857 INFO L168 Benchmark]: Witness Printer took 76.08 ms. Allocated memory is still 2.2 GB. Free memory was 1.8 GB in the beginning and 1.8 GB in the end (delta: 8.5 MB). Peak memory consumption was 8.5 MB. Max. memory is 11.5 GB. [2019-11-19 22:35:41,860 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 1.0 GB. Free memory is still 967.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 252.84 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 196.6 MB). Free memory was 948.8 MB in the beginning and 1.2 GB in the end (delta: -242.7 MB). Peak memory consumption was 22.9 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 27.25 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 15.93 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 310.91 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 18.3 MB). Peak memory consumption was 18.3 MB. Max. memory is 11.5 GB. * TraceAbstraction took 37590.68 ms. Allocated memory was 1.2 GB in the beginning and 2.2 GB in the end (delta: 1.0 GB). Free memory was 1.2 GB in the beginning and 1.8 GB in the end (delta: -591.4 MB). Peak memory consumption was 1.3 GB. Max. memory is 11.5 GB. * Witness Printer took 76.08 ms. Allocated memory is still 2.2 GB. Free memory was 1.8 GB in the beginning and 1.8 GB in the end (delta: 8.5 MB). Peak memory consumption was 8.5 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 39]: 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: 35]: Loop Invariant Derived loop invariant: 8 <= x - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 28 locations, 1 error locations. Result: SAFE, OverallTime: 37.5s, OverallIterations: 15, TraceHistogramMax: 61, AutomataDifference: 11.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 3.2s, HoareTripleCheckerStatistics: 522 SDtfs, 1311 SDslu, 6140 SDs, 0 SdLazy, 9431 SolverSat, 1745 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 6.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 4848 GetRequests, 4321 SyntacticMatches, 37 SemanticMatches, 490 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6833 ImplicationChecksByTransitivity, 10.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=172occurred in iteration=11, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 15 MinimizatonAttempts, 242 StatesRemovedByMinimization, 13 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 8 LocationsWithAnnotation, 716 PreInvPairs, 1164 NumberOfFragments, 166 HoareAnnotationTreeSize, 716 FomulaSimplifications, 13157 FormulaSimplificationTreeSizeReduction, 0.9s HoareSimplificationTime, 8 FomulaSimplificationsInter, 19807 FormulaSimplificationTreeSizeReductionInter, 2.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 1.2s SatisfiabilityAnalysisTime, 16.6s InterpolantComputationTime, 6663 NumberOfCodeBlocks, 6194 NumberOfCodeBlocksAsserted, 93 NumberOfCheckSat, 6635 ConstructedInterpolants, 0 QuantifiedInterpolants, 5950691 SizeOfPredicates, 69 NumberOfNonLiveVariables, 6267 ConjunctsInSsa, 408 ConjunctsInUnsatCore, 28 InterpolantComputations, 2 PerfectInterpolantSequences, 80674/96266 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...