./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 f470102c Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_2599503b-35ca-49eb-905f-51b9b576c740/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_2599503b-35ca-49eb-905f-51b9b576c740/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_2599503b-35ca-49eb-905f-51b9b576c740/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_2599503b-35ca-49eb-905f-51b9b576c740/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/recursive-simple/fibo_2calls_8-1.c -s /tmp/vcloud-vcloud-master/worker/run_dir_2599503b-35ca-49eb-905f-51b9b576c740/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_2599503b-35ca-49eb-905f-51b9b576c740/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 0.1.25-f470102 [2019-12-07 18:37:46,866 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-07 18:37:46,868 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-07 18:37:46,875 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-07 18:37:46,875 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-07 18:37:46,876 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-07 18:37:46,877 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-07 18:37:46,878 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-07 18:37:46,880 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-07 18:37:46,880 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-07 18:37:46,881 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-07 18:37:46,882 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-07 18:37:46,882 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-07 18:37:46,883 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-07 18:37:46,883 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-07 18:37:46,884 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-07 18:37:46,885 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-07 18:37:46,885 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-07 18:37:46,887 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-07 18:37:46,888 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-07 18:37:46,890 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-07 18:37:46,891 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-07 18:37:46,891 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-07 18:37:46,892 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-07 18:37:46,894 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-07 18:37:46,894 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-07 18:37:46,894 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-07 18:37:46,895 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-07 18:37:46,895 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-07 18:37:46,896 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-07 18:37:46,896 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-07 18:37:46,896 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-07 18:37:46,897 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-07 18:37:46,897 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-07 18:37:46,898 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-07 18:37:46,898 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-07 18:37:46,898 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-07 18:37:46,898 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-07 18:37:46,898 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-07 18:37:46,899 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-07 18:37:46,900 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-07 18:37:46,900 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_2599503b-35ca-49eb-905f-51b9b576c740/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-12-07 18:37:46,912 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-07 18:37:46,912 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-07 18:37:46,913 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-12-07 18:37:46,913 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-12-07 18:37:46,914 INFO L138 SettingsManager]: * Use SBE=true [2019-12-07 18:37:46,914 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-07 18:37:46,914 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-07 18:37:46,914 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-12-07 18:37:46,914 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-07 18:37:46,915 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-07 18:37:46,915 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-12-07 18:37:46,915 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-07 18:37:46,915 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-12-07 18:37:46,915 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-07 18:37:46,916 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-07 18:37:46,916 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-07 18:37:46,916 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-12-07 18:37:46,916 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-07 18:37:46,916 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-12-07 18:37:46,916 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-07 18:37:46,917 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-12-07 18:37:46,917 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-07 18:37:46,917 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-07 18:37:46,917 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-07 18:37:46,917 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-12-07 18:37:46,918 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-12-07 18:37:46,918 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-12-07 18:37:46,918 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-12-07 18:37:46,918 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-12-07 18:37:46,918 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_2599503b-35ca-49eb-905f-51b9b576c740/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 [2019-12-07 18:37:47,020 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-07 18:37:47,028 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-07 18:37:47,030 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-07 18:37:47,031 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-07 18:37:47,031 INFO L275 PluginConnector]: CDTParser initialized [2019-12-07 18:37:47,032 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_2599503b-35ca-49eb-905f-51b9b576c740/bin/uautomizer/../../sv-benchmarks/c/recursive-simple/fibo_2calls_8-1.c [2019-12-07 18:37:47,068 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_2599503b-35ca-49eb-905f-51b9b576c740/bin/uautomizer/data/ff1b2efa8/794fbb461c2248239d83be981f6f5ebb/FLAG9f5c13857 [2019-12-07 18:37:47,483 INFO L306 CDTParser]: Found 1 translation units. [2019-12-07 18:37:47,484 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_2599503b-35ca-49eb-905f-51b9b576c740/sv-benchmarks/c/recursive-simple/fibo_2calls_8-1.c [2019-12-07 18:37:47,487 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_2599503b-35ca-49eb-905f-51b9b576c740/bin/uautomizer/data/ff1b2efa8/794fbb461c2248239d83be981f6f5ebb/FLAG9f5c13857 [2019-12-07 18:37:47,496 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_2599503b-35ca-49eb-905f-51b9b576c740/bin/uautomizer/data/ff1b2efa8/794fbb461c2248239d83be981f6f5ebb [2019-12-07 18:37:47,498 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-07 18:37:47,499 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-12-07 18:37:47,499 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-07 18:37:47,499 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-07 18:37:47,502 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-07 18:37:47,502 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 06:37:47" (1/1) ... [2019-12-07 18:37:47,504 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7a9c5e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:37:47, skipping insertion in model container [2019-12-07 18:37:47,504 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 06:37:47" (1/1) ... [2019-12-07 18:37:47,509 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-07 18:37:47,519 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-07 18:37:47,619 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 18:37:47,655 INFO L203 MainTranslator]: Completed pre-run [2019-12-07 18:37:47,665 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 18:37:47,674 INFO L208 MainTranslator]: Completed translation [2019-12-07 18:37:47,675 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:37:47 WrapperNode [2019-12-07 18:37:47,675 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-07 18:37:47,675 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-07 18:37:47,675 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-07 18:37:47,675 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-07 18:37:47,681 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:37:47" (1/1) ... [2019-12-07 18:37:47,685 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:37:47" (1/1) ... [2019-12-07 18:37:47,695 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-07 18:37:47,696 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-07 18:37:47,696 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-07 18:37:47,696 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-07 18:37:47,702 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:37:47" (1/1) ... [2019-12-07 18:37:47,702 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:37:47" (1/1) ... [2019-12-07 18:37:47,703 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:37:47" (1/1) ... [2019-12-07 18:37:47,703 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:37:47" (1/1) ... [2019-12-07 18:37:47,704 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:37:47" (1/1) ... [2019-12-07 18:37:47,706 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:37:47" (1/1) ... [2019-12-07 18:37:47,707 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:37:47" (1/1) ... [2019-12-07 18:37:47,707 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-07 18:37:47,708 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-07 18:37:47,708 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-07 18:37:47,708 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-07 18:37:47,708 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:37:47" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2599503b-35ca-49eb-905f-51b9b576c740/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 [2019-12-07 18:37:47,752 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-07 18:37:47,752 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-07 18:37:47,752 INFO L130 BoogieDeclarations]: Found specification of procedure fibo2 [2019-12-07 18:37:47,752 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo2 [2019-12-07 18:37:47,752 INFO L130 BoogieDeclarations]: Found specification of procedure fibo1 [2019-12-07 18:37:47,752 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo1 [2019-12-07 18:37:47,862 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-07 18:37:47,862 INFO L287 CfgBuilder]: Removed 4 assume(true) statements. [2019-12-07 18:37:47,863 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 06:37:47 BoogieIcfgContainer [2019-12-07 18:37:47,863 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-07 18:37:47,864 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-12-07 18:37:47,864 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-12-07 18:37:47,866 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-12-07 18:37:47,866 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.12 06:37:47" (1/3) ... [2019-12-07 18:37:47,867 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42dfd8a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 06:37:47, skipping insertion in model container [2019-12-07 18:37:47,867 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:37:47" (2/3) ... [2019-12-07 18:37:47,867 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42dfd8a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 06:37:47, skipping insertion in model container [2019-12-07 18:37:47,867 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 06:37:47" (3/3) ... [2019-12-07 18:37:47,868 INFO L109 eAbstractionObserver]: Analyzing ICFG fibo_2calls_8-1.c [2019-12-07 18:37:47,874 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-12-07 18:37:47,879 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-12-07 18:37:47,886 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-12-07 18:37:47,901 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-07 18:37:47,901 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-07 18:37:47,901 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-07 18:37:47,901 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-07 18:37:47,901 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-07 18:37:47,901 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-07 18:37:47,901 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-07 18:37:47,901 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-07 18:37:47,912 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states. [2019-12-07 18:37:47,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-12-07 18:37:47,916 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 18:37:47,916 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 18:37:47,917 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 18:37:47,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:37:47,920 INFO L82 PathProgramCache]: Analyzing trace with hash 1871295635, now seen corresponding path program 1 times [2019-12-07 18:37:47,926 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 18:37:47,926 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1624939428] [2019-12-07 18:37:47,926 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 18:37:47,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:37:48,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:37:48,042 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 18:37:48,043 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1624939428] [2019-12-07 18:37:48,043 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 18:37:48,043 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-12-07 18:37:48,044 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1188466768] [2019-12-07 18:37:48,047 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-12-07 18:37:48,047 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 18:37:48,055 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-12-07 18:37:48,056 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-12-07 18:37:48,057 INFO L87 Difference]: Start difference. First operand 28 states. Second operand 5 states. [2019-12-07 18:37:48,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 18:37:48,121 INFO L93 Difference]: Finished difference Result 38 states and 47 transitions. [2019-12-07 18:37:48,121 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-12-07 18:37:48,122 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2019-12-07 18:37:48,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 18:37:48,129 INFO L225 Difference]: With dead ends: 38 [2019-12-07 18:37:48,129 INFO L226 Difference]: Without dead ends: 26 [2019-12-07 18:37:48,131 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 [2019-12-07 18:37:48,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2019-12-07 18:37:48,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2019-12-07 18:37:48,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2019-12-07 18:37:48,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 33 transitions. [2019-12-07 18:37:48,160 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 33 transitions. Word has length 9 [2019-12-07 18:37:48,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 18:37:48,160 INFO L462 AbstractCegarLoop]: Abstraction has 26 states and 33 transitions. [2019-12-07 18:37:48,160 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-12-07 18:37:48,160 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 33 transitions. [2019-12-07 18:37:48,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-12-07 18:37:48,161 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 18:37:48,161 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 18:37:48,161 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 18:37:48,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:37:48,162 INFO L82 PathProgramCache]: Analyzing trace with hash -1404217650, now seen corresponding path program 1 times [2019-12-07 18:37:48,162 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 18:37:48,162 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [621306696] [2019-12-07 18:37:48,162 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 18:37:48,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:37:48,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:37:48,190 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 18:37:48,190 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [621306696] [2019-12-07 18:37:48,191 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 18:37:48,191 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-12-07 18:37:48,191 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1225576011] [2019-12-07 18:37:48,192 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-12-07 18:37:48,192 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 18:37:48,192 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-12-07 18:37:48,192 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-12-07 18:37:48,193 INFO L87 Difference]: Start difference. First operand 26 states and 33 transitions. Second operand 5 states. [2019-12-07 18:37:48,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 18:37:48,226 INFO L93 Difference]: Finished difference Result 32 states and 40 transitions. [2019-12-07 18:37:48,226 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-12-07 18:37:48,226 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2019-12-07 18:37:48,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 18:37:48,227 INFO L225 Difference]: With dead ends: 32 [2019-12-07 18:37:48,227 INFO L226 Difference]: Without dead ends: 28 [2019-12-07 18:37:48,228 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 [2019-12-07 18:37:48,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2019-12-07 18:37:48,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 26. [2019-12-07 18:37:48,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2019-12-07 18:37:48,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 33 transitions. [2019-12-07 18:37:48,233 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 33 transitions. Word has length 10 [2019-12-07 18:37:48,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 18:37:48,233 INFO L462 AbstractCegarLoop]: Abstraction has 26 states and 33 transitions. [2019-12-07 18:37:48,233 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-12-07 18:37:48,233 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 33 transitions. [2019-12-07 18:37:48,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2019-12-07 18:37:48,234 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 18:37:48,234 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 18:37:48,234 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 18:37:48,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:37:48,235 INFO L82 PathProgramCache]: Analyzing trace with hash -1629927371, now seen corresponding path program 1 times [2019-12-07 18:37:48,235 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 18:37:48,235 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1537831891] [2019-12-07 18:37:48,235 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 18:37:48,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:37:48,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:37:48,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:37:48,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:37:48,313 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-12-07 18:37:48,313 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1537831891] [2019-12-07 18:37:48,314 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [853226810] [2019-12-07 18:37:48,314 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2599503b-35ca-49eb-905f-51b9b576c740/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 [2019-12-07 18:37:48,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:37:48,339 INFO L264 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 6 conjunts are in the unsatisfiable core [2019-12-07 18:37:48,343 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 18:37:48,393 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-12-07 18:37:48,394 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-07 18:37:48,394 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 10 [2019-12-07 18:37:48,394 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [823449266] [2019-12-07 18:37:48,394 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-12-07 18:37:48,394 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 18:37:48,395 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-12-07 18:37:48,395 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2019-12-07 18:37:48,395 INFO L87 Difference]: Start difference. First operand 26 states and 33 transitions. Second operand 10 states. [2019-12-07 18:37:48,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 18:37:48,473 INFO L93 Difference]: Finished difference Result 59 states and 83 transitions. [2019-12-07 18:37:48,473 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-12-07 18:37:48,473 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 22 [2019-12-07 18:37:48,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 18:37:48,474 INFO L225 Difference]: With dead ends: 59 [2019-12-07 18:37:48,474 INFO L226 Difference]: Without dead ends: 35 [2019-12-07 18:37:48,475 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2019-12-07 18:37:48,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2019-12-07 18:37:48,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 33. [2019-12-07 18:37:48,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2019-12-07 18:37:48,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 42 transitions. [2019-12-07 18:37:48,481 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 42 transitions. Word has length 22 [2019-12-07 18:37:48,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 18:37:48,481 INFO L462 AbstractCegarLoop]: Abstraction has 33 states and 42 transitions. [2019-12-07 18:37:48,481 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-12-07 18:37:48,481 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 42 transitions. [2019-12-07 18:37:48,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2019-12-07 18:37:48,482 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 18:37:48,482 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] [2019-12-07 18:37:48,683 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 18:37:48,683 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 18:37:48,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:37:48,684 INFO L82 PathProgramCache]: Analyzing trace with hash 1285987244, now seen corresponding path program 1 times [2019-12-07 18:37:48,685 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 18:37:48,685 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [583592505] [2019-12-07 18:37:48,686 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 18:37:48,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:37:48,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:37:48,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:37:48,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:37:48,920 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-12-07 18:37:48,921 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [583592505] [2019-12-07 18:37:48,921 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2040894353] [2019-12-07 18:37:48,921 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2599503b-35ca-49eb-905f-51b9b576c740/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 [2019-12-07 18:37:48,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:37:48,982 INFO L264 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 6 conjunts are in the unsatisfiable core [2019-12-07 18:37:48,984 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 18:37:49,019 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-12-07 18:37:49,019 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-07 18:37:49,019 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 10 [2019-12-07 18:37:49,020 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [668876203] [2019-12-07 18:37:49,020 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-12-07 18:37:49,020 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 18:37:49,021 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-12-07 18:37:49,021 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2019-12-07 18:37:49,021 INFO L87 Difference]: Start difference. First operand 33 states and 42 transitions. Second operand 10 states. [2019-12-07 18:37:49,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 18:37:49,167 INFO L93 Difference]: Finished difference Result 55 states and 78 transitions. [2019-12-07 18:37:49,167 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-12-07 18:37:49,167 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 23 [2019-12-07 18:37:49,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 18:37:49,169 INFO L225 Difference]: With dead ends: 55 [2019-12-07 18:37:49,169 INFO L226 Difference]: Without dead ends: 51 [2019-12-07 18:37:49,170 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2019-12-07 18:37:49,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2019-12-07 18:37:49,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 48. [2019-12-07 18:37:49,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2019-12-07 18:37:49,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 68 transitions. [2019-12-07 18:37:49,178 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 68 transitions. Word has length 23 [2019-12-07 18:37:49,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 18:37:49,178 INFO L462 AbstractCegarLoop]: Abstraction has 48 states and 68 transitions. [2019-12-07 18:37:49,178 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-12-07 18:37:49,178 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 68 transitions. [2019-12-07 18:37:49,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2019-12-07 18:37:49,180 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 18:37:49,180 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] [2019-12-07 18:37:49,381 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 18:37:49,381 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 18:37:49,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:37:49,383 INFO L82 PathProgramCache]: Analyzing trace with hash -649262923, now seen corresponding path program 1 times [2019-12-07 18:37:49,383 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 18:37:49,384 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1390635082] [2019-12-07 18:37:49,384 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 18:37:49,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:37:49,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:37:49,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:37:49,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:37:49,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:37:49,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:37:49,559 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-12-07 18:37:49,560 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1390635082] [2019-12-07 18:37:49,560 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [841113957] [2019-12-07 18:37:49,560 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2599503b-35ca-49eb-905f-51b9b576c740/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 [2019-12-07 18:37:49,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:37:49,596 INFO L264 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 8 conjunts are in the unsatisfiable core [2019-12-07 18:37:49,598 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 18:37:49,646 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-12-07 18:37:49,646 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-07 18:37:49,646 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 12 [2019-12-07 18:37:49,646 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1166595321] [2019-12-07 18:37:49,647 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-12-07 18:37:49,647 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 18:37:49,648 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-12-07 18:37:49,648 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2019-12-07 18:37:49,648 INFO L87 Difference]: Start difference. First operand 48 states and 68 transitions. Second operand 12 states. [2019-12-07 18:37:49,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 18:37:49,905 INFO L93 Difference]: Finished difference Result 114 states and 187 transitions. [2019-12-07 18:37:49,906 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2019-12-07 18:37:49,906 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 35 [2019-12-07 18:37:49,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 18:37:49,907 INFO L225 Difference]: With dead ends: 114 [2019-12-07 18:37:49,908 INFO L226 Difference]: Without dead ends: 68 [2019-12-07 18:37:49,909 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=302, Unknown=0, NotChecked=0, Total=380 [2019-12-07 18:37:49,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2019-12-07 18:37:49,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 66. [2019-12-07 18:37:49,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2019-12-07 18:37:49,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 98 transitions. [2019-12-07 18:37:49,919 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 98 transitions. Word has length 35 [2019-12-07 18:37:49,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 18:37:49,919 INFO L462 AbstractCegarLoop]: Abstraction has 66 states and 98 transitions. [2019-12-07 18:37:49,920 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-12-07 18:37:49,920 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 98 transitions. [2019-12-07 18:37:49,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2019-12-07 18:37:49,921 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 18:37:49,922 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] [2019-12-07 18:37:50,122 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 18:37:50,123 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 18:37:50,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:37:50,124 INFO L82 PathProgramCache]: Analyzing trace with hash 2000747716, now seen corresponding path program 1 times [2019-12-07 18:37:50,125 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 18:37:50,125 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [829412933] [2019-12-07 18:37:50,126 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 18:37:50,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:37:50,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:37:50,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:37:50,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:37:50,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:37:50,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:37:50,221 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 7 proven. 3 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2019-12-07 18:37:50,222 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [829412933] [2019-12-07 18:37:50,222 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2042205291] [2019-12-07 18:37:50,222 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2599503b-35ca-49eb-905f-51b9b576c740/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 [2019-12-07 18:37:50,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:37:50,244 INFO L264 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 8 conjunts are in the unsatisfiable core [2019-12-07 18:37:50,246 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 18:37:50,284 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-12-07 18:37:50,285 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-07 18:37:50,285 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 12 [2019-12-07 18:37:50,285 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1960082892] [2019-12-07 18:37:50,285 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-12-07 18:37:50,285 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 18:37:50,286 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-12-07 18:37:50,286 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2019-12-07 18:37:50,286 INFO L87 Difference]: Start difference. First operand 66 states and 98 transitions. Second operand 12 states. [2019-12-07 18:37:50,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 18:37:50,434 INFO L93 Difference]: Finished difference Result 147 states and 239 transitions. [2019-12-07 18:37:50,434 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-12-07 18:37:50,434 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 36 [2019-12-07 18:37:50,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 18:37:50,436 INFO L225 Difference]: With dead ends: 147 [2019-12-07 18:37:50,436 INFO L226 Difference]: Without dead ends: 83 [2019-12-07 18:37:50,437 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=60, Invalid=212, Unknown=0, NotChecked=0, Total=272 [2019-12-07 18:37:50,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2019-12-07 18:37:50,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 66. [2019-12-07 18:37:50,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2019-12-07 18:37:50,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 96 transitions. [2019-12-07 18:37:50,446 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 96 transitions. Word has length 36 [2019-12-07 18:37:50,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 18:37:50,447 INFO L462 AbstractCegarLoop]: Abstraction has 66 states and 96 transitions. [2019-12-07 18:37:50,447 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-12-07 18:37:50,447 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 96 transitions. [2019-12-07 18:37:50,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2019-12-07 18:37:50,448 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 18:37:50,449 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] [2019-12-07 18:37:50,649 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 18:37:50,650 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 18:37:50,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:37:50,651 INFO L82 PathProgramCache]: Analyzing trace with hash -434541687, now seen corresponding path program 1 times [2019-12-07 18:37:50,651 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 18:37:50,652 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [548278048] [2019-12-07 18:37:50,652 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 18:37:50,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:37:50,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:37:50,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:37:50,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:37:50,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:37:50,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:37:50,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:37:50,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:37:50,790 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 6 proven. 11 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2019-12-07 18:37:50,790 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [548278048] [2019-12-07 18:37:50,790 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1229176895] [2019-12-07 18:37:50,790 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2599503b-35ca-49eb-905f-51b9b576c740/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 [2019-12-07 18:37:50,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:37:50,815 INFO L264 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 10 conjunts are in the unsatisfiable core [2019-12-07 18:37:50,817 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 18:37:50,860 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 4 proven. 23 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2019-12-07 18:37:50,860 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-07 18:37:50,860 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9] total 16 [2019-12-07 18:37:50,861 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1959414201] [2019-12-07 18:37:50,861 INFO L442 AbstractCegarLoop]: Interpolant automaton has 16 states [2019-12-07 18:37:50,861 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 18:37:50,861 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2019-12-07 18:37:50,862 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=196, Unknown=0, NotChecked=0, Total=240 [2019-12-07 18:37:50,862 INFO L87 Difference]: Start difference. First operand 66 states and 96 transitions. Second operand 16 states. [2019-12-07 18:37:51,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 18:37:51,153 INFO L93 Difference]: Finished difference Result 164 states and 279 transitions. [2019-12-07 18:37:51,153 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2019-12-07 18:37:51,153 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 50 [2019-12-07 18:37:51,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 18:37:51,154 INFO L225 Difference]: With dead ends: 164 [2019-12-07 18:37:51,155 INFO L226 Difference]: Without dead ends: 100 [2019-12-07 18:37:51,156 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=111, Invalid=489, Unknown=0, NotChecked=0, Total=600 [2019-12-07 18:37:51,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2019-12-07 18:37:51,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 89. [2019-12-07 18:37:51,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2019-12-07 18:37:51,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 145 transitions. [2019-12-07 18:37:51,168 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 145 transitions. Word has length 50 [2019-12-07 18:37:51,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 18:37:51,169 INFO L462 AbstractCegarLoop]: Abstraction has 89 states and 145 transitions. [2019-12-07 18:37:51,169 INFO L463 AbstractCegarLoop]: Interpolant automaton has 16 states. [2019-12-07 18:37:51,169 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 145 transitions. [2019-12-07 18:37:51,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2019-12-07 18:37:51,173 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 18:37:51,173 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] [2019-12-07 18:37:51,374 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 18:37:51,375 INFO L410 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 18:37:51,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:37:51,376 INFO L82 PathProgramCache]: Analyzing trace with hash -1917551255, now seen corresponding path program 1 times [2019-12-07 18:37:51,376 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 18:37:51,376 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1864341261] [2019-12-07 18:37:51,377 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 18:37:51,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:37:51,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:37:51,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:37:51,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:37:51,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:37:51,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:37:51,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:37:51,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:37:51,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:37:51,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:37:51,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:37:51,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:37:51,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:37:51,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:37:51,593 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 33 proven. 58 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2019-12-07 18:37:51,594 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1864341261] [2019-12-07 18:37:51,594 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [807187322] [2019-12-07 18:37:51,594 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2599503b-35ca-49eb-905f-51b9b576c740/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 [2019-12-07 18:37:51,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:37:51,624 INFO L264 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 12 conjunts are in the unsatisfiable core [2019-12-07 18:37:51,627 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 18:37:51,688 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 13 proven. 90 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2019-12-07 18:37:51,689 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-07 18:37:51,689 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 10] total 18 [2019-12-07 18:37:51,689 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1542580410] [2019-12-07 18:37:51,689 INFO L442 AbstractCegarLoop]: Interpolant automaton has 18 states [2019-12-07 18:37:51,689 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 18:37:51,690 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2019-12-07 18:37:51,690 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=255, Unknown=0, NotChecked=0, Total=306 [2019-12-07 18:37:51,690 INFO L87 Difference]: Start difference. First operand 89 states and 145 transitions. Second operand 18 states. [2019-12-07 18:37:52,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 18:37:52,027 INFO L93 Difference]: Finished difference Result 207 states and 388 transitions. [2019-12-07 18:37:52,027 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2019-12-07 18:37:52,027 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 91 [2019-12-07 18:37:52,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 18:37:52,029 INFO L225 Difference]: With dead ends: 207 [2019-12-07 18:37:52,029 INFO L226 Difference]: Without dead ends: 114 [2019-12-07 18:37:52,030 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 124 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=143, Invalid=669, Unknown=0, NotChecked=0, Total=812 [2019-12-07 18:37:52,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2019-12-07 18:37:52,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 88. [2019-12-07 18:37:52,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2019-12-07 18:37:52,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 135 transitions. [2019-12-07 18:37:52,040 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 135 transitions. Word has length 91 [2019-12-07 18:37:52,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 18:37:52,040 INFO L462 AbstractCegarLoop]: Abstraction has 88 states and 135 transitions. [2019-12-07 18:37:52,040 INFO L463 AbstractCegarLoop]: Interpolant automaton has 18 states. [2019-12-07 18:37:52,040 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 135 transitions. [2019-12-07 18:37:52,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2019-12-07 18:37:52,042 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 18:37:52,042 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] [2019-12-07 18:37:52,242 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 18:37:52,243 INFO L410 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 18:37:52,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:37:52,244 INFO L82 PathProgramCache]: Analyzing trace with hash -463941571, now seen corresponding path program 1 times [2019-12-07 18:37:52,244 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 18:37:52,245 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1157895997] [2019-12-07 18:37:52,245 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 18:37:52,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:37:52,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:37:52,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:37:52,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:37:52,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:37:52,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:37:52,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:37:52,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:37:52,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:37:52,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:37:52,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:37:52,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:37:52,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:37:52,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:37:52,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:37:52,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:37:52,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:37:52,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:37:52,573 INFO L134 CoverageAnalysis]: Checked inductivity of 358 backedges. 53 proven. 117 refuted. 0 times theorem prover too weak. 188 trivial. 0 not checked. [2019-12-07 18:37:52,573 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1157895997] [2019-12-07 18:37:52,574 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [606432266] [2019-12-07 18:37:52,574 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2599503b-35ca-49eb-905f-51b9b576c740/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 [2019-12-07 18:37:52,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:37:52,606 INFO L264 TraceCheckSpWp]: Trace formula consists of 266 conjuncts, 14 conjunts are in the unsatisfiable core [2019-12-07 18:37:52,609 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 18:37:52,687 INFO L134 CoverageAnalysis]: Checked inductivity of 358 backedges. 24 proven. 155 refuted. 0 times theorem prover too weak. 179 trivial. 0 not checked. [2019-12-07 18:37:52,687 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-07 18:37:52,687 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 11] total 21 [2019-12-07 18:37:52,687 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1351804308] [2019-12-07 18:37:52,688 INFO L442 AbstractCegarLoop]: Interpolant automaton has 21 states [2019-12-07 18:37:52,688 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 18:37:52,688 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2019-12-07 18:37:52,689 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=356, Unknown=0, NotChecked=0, Total=420 [2019-12-07 18:37:52,689 INFO L87 Difference]: Start difference. First operand 88 states and 135 transitions. Second operand 21 states. [2019-12-07 18:37:53,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 18:37:53,157 INFO L93 Difference]: Finished difference Result 244 states and 473 transitions. [2019-12-07 18:37:53,157 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2019-12-07 18:37:53,157 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 119 [2019-12-07 18:37:53,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 18:37:53,159 INFO L225 Difference]: With dead ends: 244 [2019-12-07 18:37:53,159 INFO L226 Difference]: Without dead ends: 152 [2019-12-07 18:37:53,161 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 261 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=232, Invalid=1100, Unknown=0, NotChecked=0, Total=1332 [2019-12-07 18:37:53,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2019-12-07 18:37:53,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 134. [2019-12-07 18:37:53,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 134 states. [2019-12-07 18:37:53,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 224 transitions. [2019-12-07 18:37:53,173 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 224 transitions. Word has length 119 [2019-12-07 18:37:53,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 18:37:53,173 INFO L462 AbstractCegarLoop]: Abstraction has 134 states and 224 transitions. [2019-12-07 18:37:53,173 INFO L463 AbstractCegarLoop]: Interpolant automaton has 21 states. [2019-12-07 18:37:53,173 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 224 transitions. [2019-12-07 18:37:53,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2019-12-07 18:37:53,178 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 18:37:53,178 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] [2019-12-07 18:37:53,378 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 18:37:53,379 INFO L410 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 18:37:53,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:37:53,379 INFO L82 PathProgramCache]: Analyzing trace with hash 48690978, now seen corresponding path program 2 times [2019-12-07 18:37:53,379 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 18:37:53,379 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [17420101] [2019-12-07 18:37:53,379 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 18:37:53,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:37:53,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:37:53,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:37:53,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:37:53,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:37:53,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:37:53,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:37:53,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:37:53,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:37:53,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:37:53,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:37:53,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:37:53,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:37:53,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:37:53,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:37:53,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:37:53,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:37:53,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:37:53,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:37:53,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:37:53,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:37:53,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:37:53,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:37:53,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:37:53,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:37:53,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:37:53,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:37:53,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:37:53,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:37:53,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:37:53,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:37:53,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:37:53,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:37:53,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:37:53,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:37:53,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:37:53,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:37:53,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:37:54,042 INFO L134 CoverageAnalysis]: Checked inductivity of 1837 backedges. 539 proven. 492 refuted. 0 times theorem prover too weak. 806 trivial. 0 not checked. [2019-12-07 18:37:54,042 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [17420101] [2019-12-07 18:37:54,042 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1240689129] [2019-12-07 18:37:54,042 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2599503b-35ca-49eb-905f-51b9b576c740/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 [2019-12-07 18:37:54,095 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-12-07 18:37:54,095 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-07 18:37:54,097 INFO L264 TraceCheckSpWp]: Trace formula consists of 570 conjuncts, 16 conjunts are in the unsatisfiable core [2019-12-07 18:37:54,102 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 18:37:54,238 INFO L134 CoverageAnalysis]: Checked inductivity of 1837 backedges. 72 proven. 513 refuted. 0 times theorem prover too weak. 1252 trivial. 0 not checked. [2019-12-07 18:37:54,238 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-07 18:37:54,239 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 12] total 39 [2019-12-07 18:37:54,239 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2053439208] [2019-12-07 18:37:54,239 INFO L442 AbstractCegarLoop]: Interpolant automaton has 39 states [2019-12-07 18:37:54,240 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 18:37:54,240 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2019-12-07 18:37:54,240 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=185, Invalid=1297, Unknown=0, NotChecked=0, Total=1482 [2019-12-07 18:37:54,240 INFO L87 Difference]: Start difference. First operand 134 states and 224 transitions. Second operand 39 states. [2019-12-07 18:37:55,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 18:37:55,383 INFO L93 Difference]: Finished difference Result 353 states and 773 transitions. [2019-12-07 18:37:55,383 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2019-12-07 18:37:55,383 INFO L78 Accepts]: Start accepts. Automaton has 39 states. Word has length 256 [2019-12-07 18:37:55,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 18:37:55,386 INFO L225 Difference]: With dead ends: 353 [2019-12-07 18:37:55,386 INFO L226 Difference]: Without dead ends: 214 [2019-12-07 18:37:55,389 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 399 GetRequests, 329 SyntacticMatches, 1 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1473 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=596, Invalid=4374, Unknown=0, NotChecked=0, Total=4970 [2019-12-07 18:37:55,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2019-12-07 18:37:55,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 153. [2019-12-07 18:37:55,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 153 states. [2019-12-07 18:37:55,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 212 transitions. [2019-12-07 18:37:55,400 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 212 transitions. Word has length 256 [2019-12-07 18:37:55,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 18:37:55,400 INFO L462 AbstractCegarLoop]: Abstraction has 153 states and 212 transitions. [2019-12-07 18:37:55,401 INFO L463 AbstractCegarLoop]: Interpolant automaton has 39 states. [2019-12-07 18:37:55,401 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 212 transitions. [2019-12-07 18:37:55,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 365 [2019-12-07 18:37:55,405 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 18:37:55,405 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] [2019-12-07 18:37:55,605 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 18:37:55,605 INFO L410 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 18:37:55,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:37:55,606 INFO L82 PathProgramCache]: Analyzing trace with hash -912985296, now seen corresponding path program 3 times [2019-12-07 18:37:55,606 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 18:37:55,606 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2118491784] [2019-12-07 18:37:55,606 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 18:37:55,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:37:55,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:37:55,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:37:55,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:37:55,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:37:55,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:37:55,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:37:55,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:37:55,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:37:55,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:37:55,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:37:55,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:37:55,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:37:55,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:37:55,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:37:55,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:37:55,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:37:55,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:37:55,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:37:55,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:37:55,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:37:55,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:37:56,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:37:56,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:37:56,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:37:56,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:37:56,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:37:56,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:37:56,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:37:56,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:37:56,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:37:56,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:37:56,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:37:56,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:37:56,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:37:56,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:37:56,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:37:56,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:37:56,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:37:56,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:37:56,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:37:56,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:37:56,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:37:56,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:37:56,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:37:56,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:37:56,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:37:56,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:37:56,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:37:56,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:37:56,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:37:56,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:37:56,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:37:56,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:37:56,264 INFO L134 CoverageAnalysis]: Checked inductivity of 3769 backedges. 279 proven. 859 refuted. 0 times theorem prover too weak. 2631 trivial. 0 not checked. [2019-12-07 18:37:56,265 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2118491784] [2019-12-07 18:37:56,265 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [80706773] [2019-12-07 18:37:56,265 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2599503b-35ca-49eb-905f-51b9b576c740/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 [2019-12-07 18:37:56,312 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2019-12-07 18:37:56,312 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-07 18:37:56,313 INFO L264 TraceCheckSpWp]: Trace formula consists of 266 conjuncts, 12 conjunts are in the unsatisfiable core [2019-12-07 18:37:56,320 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 18:37:56,460 INFO L134 CoverageAnalysis]: Checked inductivity of 3769 backedges. 554 proven. 91 refuted. 0 times theorem prover too weak. 3124 trivial. 0 not checked. [2019-12-07 18:37:56,460 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-07 18:37:56,461 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 10] total 29 [2019-12-07 18:37:56,461 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1736604585] [2019-12-07 18:37:56,462 INFO L442 AbstractCegarLoop]: Interpolant automaton has 29 states [2019-12-07 18:37:56,462 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 18:37:56,462 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2019-12-07 18:37:56,462 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=700, Unknown=0, NotChecked=0, Total=812 [2019-12-07 18:37:56,462 INFO L87 Difference]: Start difference. First operand 153 states and 212 transitions. Second operand 29 states. [2019-12-07 18:37:57,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 18:37:57,102 INFO L93 Difference]: Finished difference Result 343 states and 516 transitions. [2019-12-07 18:37:57,102 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2019-12-07 18:37:57,102 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 364 [2019-12-07 18:37:57,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 18:37:57,105 INFO L225 Difference]: With dead ends: 343 [2019-12-07 18:37:57,105 INFO L226 Difference]: Without dead ends: 207 [2019-12-07 18:37:57,106 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 511 GetRequests, 463 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 636 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=332, Invalid=2118, Unknown=0, NotChecked=0, Total=2450 [2019-12-07 18:37:57,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2019-12-07 18:37:57,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 172. [2019-12-07 18:37:57,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 172 states. [2019-12-07 18:37:57,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 237 transitions. [2019-12-07 18:37:57,115 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 237 transitions. Word has length 364 [2019-12-07 18:37:57,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 18:37:57,115 INFO L462 AbstractCegarLoop]: Abstraction has 172 states and 237 transitions. [2019-12-07 18:37:57,116 INFO L463 AbstractCegarLoop]: Interpolant automaton has 29 states. [2019-12-07 18:37:57,116 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 237 transitions. [2019-12-07 18:37:57,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 814 [2019-12-07 18:37:57,125 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 18:37:57,126 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] [2019-12-07 18:37:57,326 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 18:37:57,327 INFO L410 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 18:37:57,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:37:57,328 INFO L82 PathProgramCache]: Analyzing trace with hash -912022056, now seen corresponding path program 4 times [2019-12-07 18:37:57,328 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 18:37:57,329 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1964637112] [2019-12-07 18:37:57,329 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 18:37:57,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:37:57,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:37:57,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:37:57,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:37:57,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:37:57,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:37:57,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:37:57,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:37:57,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:37:58,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:37:58,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:37:58,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:37:58,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:37:58,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:37:58,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:37:58,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:37:58,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:37:58,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:37:58,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:37:58,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:37:58,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:37:58,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:37:58,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:37:58,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:37:58,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:37:58,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:37:58,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:37:58,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:37:58,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:37:58,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:37:58,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:37:58,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:37:58,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:37:58,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:37:58,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:37:58,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:37:58,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:37:58,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:37:58,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:37:58,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:37:58,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:37:58,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:37:58,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:37:58,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:37:58,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:37:58,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:37:58,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:37:58,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:37:58,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:37:58,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:37:58,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:37:58,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:37:58,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:37:58,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:37:58,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:37:58,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:37:58,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:37:58,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:37:58,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:37:58,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:37:58,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:37:58,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:37:58,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:37:58,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:37:58,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:37:58,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:37:58,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:37:58,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:37:58,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:37:58,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:37:58,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:37:58,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:37:58,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:37:58,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:37:58,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:37:58,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:37:58,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:37:58,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:37:58,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:37:58,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:37:58,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:37:58,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:37:58,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:37:58,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:37:58,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:37:58,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:37:58,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:37:58,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:37:58,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:37:58,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:37:58,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:37:58,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:37:58,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:37:58,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:37:58,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:37:58,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:37:58,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:37:58,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:37:58,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:37:58,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:37:58,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:37:58,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:37:58,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:37:58,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:37:58,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:37:58,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:37:58,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:37:58,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:37:58,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:37:58,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:37:58,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:37:58,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:37:58,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:37:58,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:37:58,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:37:58,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:37:58,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:37:58,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:37:58,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:37:58,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:37:59,647 INFO L134 CoverageAnalysis]: Checked inductivity of 19552 backedges. 1662 proven. 3876 refuted. 0 times theorem prover too weak. 14014 trivial. 0 not checked. [2019-12-07 18:37:59,647 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1964637112] [2019-12-07 18:37:59,648 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1186578533] [2019-12-07 18:37:59,648 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2599503b-35ca-49eb-905f-51b9b576c740/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 [2019-12-07 18:37:59,766 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-12-07 18:37:59,766 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-07 18:37:59,768 INFO L264 TraceCheckSpWp]: Trace formula consists of 1448 conjuncts, 17 conjunts are in the unsatisfiable core [2019-12-07 18:37:59,777 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 18:38:00,121 INFO L134 CoverageAnalysis]: Checked inductivity of 19552 backedges. 675 proven. 1590 refuted. 0 times theorem prover too weak. 17287 trivial. 0 not checked. [2019-12-07 18:38:00,121 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-07 18:38:00,122 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [44, 13] total 48 [2019-12-07 18:38:00,122 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1047661107] [2019-12-07 18:38:00,123 INFO L442 AbstractCegarLoop]: Interpolant automaton has 48 states [2019-12-07 18:38:00,123 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 18:38:00,123 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2019-12-07 18:38:00,124 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=285, Invalid=1971, Unknown=0, NotChecked=0, Total=2256 [2019-12-07 18:38:00,124 INFO L87 Difference]: Start difference. First operand 172 states and 237 transitions. Second operand 48 states. [2019-12-07 18:38:01,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 18:38:01,089 INFO L93 Difference]: Finished difference Result 409 states and 682 transitions. [2019-12-07 18:38:01,090 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2019-12-07 18:38:01,090 INFO L78 Accepts]: Start accepts. Automaton has 48 states. Word has length 813 [2019-12-07 18:38:01,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 18:38:01,092 INFO L225 Difference]: With dead ends: 409 [2019-12-07 18:38:01,092 INFO L226 Difference]: Without dead ends: 176 [2019-12-07 18:38:01,095 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 1118 GetRequests, 1046 SyntacticMatches, 1 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1984 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=633, Invalid=4623, Unknown=0, NotChecked=0, Total=5256 [2019-12-07 18:38:01,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2019-12-07 18:38:01,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 161. [2019-12-07 18:38:01,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 161 states. [2019-12-07 18:38:01,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 191 transitions. [2019-12-07 18:38:01,102 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 191 transitions. Word has length 813 [2019-12-07 18:38:01,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 18:38:01,103 INFO L462 AbstractCegarLoop]: Abstraction has 161 states and 191 transitions. [2019-12-07 18:38:01,103 INFO L463 AbstractCegarLoop]: Interpolant automaton has 48 states. [2019-12-07 18:38:01,103 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 191 transitions. [2019-12-07 18:38:01,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 487 [2019-12-07 18:38:01,105 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 18:38:01,105 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] [2019-12-07 18:38:01,305 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 18:38:01,306 INFO L410 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 18:38:01,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:38:01,307 INFO L82 PathProgramCache]: Analyzing trace with hash 848099483, now seen corresponding path program 5 times [2019-12-07 18:38:01,307 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 18:38:01,308 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1545812407] [2019-12-07 18:38:01,308 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 18:38:01,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:38:01,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:38:01,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:38:01,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:38:01,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:38:01,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:38:01,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:38:01,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:38:01,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:38:01,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:38:01,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:38:01,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:38:01,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:38:01,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:38:01,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:38:01,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:38:01,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:38:01,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:38:01,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:38:01,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:38:01,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:38:01,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:38:01,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:38:01,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:38:01,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:38:01,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:38:01,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:38:01,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:38:01,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:38:01,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:38:01,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:38:01,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:38:01,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:38:01,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:38:01,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:38:01,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:38:01,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:38:01,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:38:01,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:38:01,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:38:01,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:38:01,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:38:01,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:38:01,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:38:01,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:38:01,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:38:01,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:38:01,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:38:01,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:38:01,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:38:01,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:38:01,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:38:01,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:38:01,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:38:01,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:38:01,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:38:01,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:38:01,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:38:01,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:38:01,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:38:01,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:38:01,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:38:01,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:38:02,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:38:02,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:38:02,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:38:02,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:38:02,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:38:02,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:38:02,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:38:02,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:38:02,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:38:02,317 INFO L134 CoverageAnalysis]: Checked inductivity of 6848 backedges. 1442 proven. 1490 refuted. 0 times theorem prover too weak. 3916 trivial. 0 not checked. [2019-12-07 18:38:02,317 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1545812407] [2019-12-07 18:38:02,317 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1860400210] [2019-12-07 18:38:02,317 INFO L92 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2599503b-35ca-49eb-905f-51b9b576c740/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 [2019-12-07 18:38:02,413 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 24 check-sat command(s) [2019-12-07 18:38:02,414 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-07 18:38:02,415 INFO L264 TraceCheckSpWp]: Trace formula consists of 850 conjuncts, 16 conjunts are in the unsatisfiable core [2019-12-07 18:38:02,421 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 18:38:02,616 INFO L134 CoverageAnalysis]: Checked inductivity of 6848 backedges. 3907 proven. 174 refuted. 0 times theorem prover too weak. 2767 trivial. 0 not checked. [2019-12-07 18:38:02,616 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-07 18:38:02,617 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 14] total 35 [2019-12-07 18:38:02,617 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [385831210] [2019-12-07 18:38:02,618 INFO L442 AbstractCegarLoop]: Interpolant automaton has 35 states [2019-12-07 18:38:02,618 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 18:38:02,618 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2019-12-07 18:38:02,619 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=156, Invalid=1034, Unknown=0, NotChecked=0, Total=1190 [2019-12-07 18:38:02,619 INFO L87 Difference]: Start difference. First operand 161 states and 191 transitions. Second operand 35 states. [2019-12-07 18:38:03,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 18:38:03,183 INFO L93 Difference]: Finished difference Result 325 states and 388 transitions. [2019-12-07 18:38:03,183 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2019-12-07 18:38:03,184 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 486 [2019-12-07 18:38:03,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 18:38:03,185 INFO L225 Difference]: With dead ends: 325 [2019-12-07 18:38:03,185 INFO L226 Difference]: Without dead ends: 181 [2019-12-07 18:38:03,186 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 687 GetRequests, 638 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 722 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=343, Invalid=2207, Unknown=0, NotChecked=0, Total=2550 [2019-12-07 18:38:03,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2019-12-07 18:38:03,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 161. [2019-12-07 18:38:03,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 161 states. [2019-12-07 18:38:03,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 187 transitions. [2019-12-07 18:38:03,192 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 187 transitions. Word has length 486 [2019-12-07 18:38:03,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 18:38:03,193 INFO L462 AbstractCegarLoop]: Abstraction has 161 states and 187 transitions. [2019-12-07 18:38:03,193 INFO L463 AbstractCegarLoop]: Interpolant automaton has 35 states. [2019-12-07 18:38:03,193 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 187 transitions. [2019-12-07 18:38:03,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 569 [2019-12-07 18:38:03,195 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 18:38:03,195 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] [2019-12-07 18:38:03,396 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 18:38:03,396 INFO L410 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 18:38:03,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:38:03,396 INFO L82 PathProgramCache]: Analyzing trace with hash 932975275, now seen corresponding path program 6 times [2019-12-07 18:38:03,396 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 18:38:03,397 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [958838921] [2019-12-07 18:38:03,397 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 18:38:03,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:38:03,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:38:03,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:38:03,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:38:03,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:38:03,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:38:03,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:38:03,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:38:03,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:38:03,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:38:03,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:38:03,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:38:03,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:38:03,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:38:03,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:38:03,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:38:03,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:38:03,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:38:03,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:38:03,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:38:03,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:38:03,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:38:03,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:38:03,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:38:03,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:38:03,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:38:03,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:38:03,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:38:03,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:38:03,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:38:03,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:38:03,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:38:03,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:38:03,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:38:03,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:38:03,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:38:03,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:38:03,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:38:03,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:38:03,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:38:03,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:38:03,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:38:03,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:38:03,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:38:03,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:38:03,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:38:03,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:38:03,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:38:04,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:38:04,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:38:04,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:38:04,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:38:04,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:38:04,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:38:04,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:38:04,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:38:04,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:38:04,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:38:04,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:38:04,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:38:04,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:38:04,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:38:04,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:38:04,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:38:04,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:38:04,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:38:04,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:38:04,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:38:04,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:38:04,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:38:04,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:38:04,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:38:04,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:38:04,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:38:04,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:38:04,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:38:04,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:38:04,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:38:04,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:38:04,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:38:04,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:38:04,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:38:04,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:38:04,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:38:04,508 INFO L134 CoverageAnalysis]: Checked inductivity of 9413 backedges. 918 proven. 1776 refuted. 0 times theorem prover too weak. 6719 trivial. 0 not checked. [2019-12-07 18:38:04,508 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [958838921] [2019-12-07 18:38:04,508 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1130704900] [2019-12-07 18:38:04,509 INFO L92 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2599503b-35ca-49eb-905f-51b9b576c740/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 [2019-12-07 18:38:04,649 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 36 check-sat command(s) [2019-12-07 18:38:04,649 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-07 18:38:04,651 INFO L264 TraceCheckSpWp]: Trace formula consists of 1263 conjuncts, 12 conjunts are in the unsatisfiable core [2019-12-07 18:38:04,657 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 18:38:04,851 INFO L134 CoverageAnalysis]: Checked inductivity of 9413 backedges. 874 proven. 170 refuted. 0 times theorem prover too weak. 8369 trivial. 0 not checked. [2019-12-07 18:38:04,851 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-07 18:38:04,852 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 10] total 37 [2019-12-07 18:38:04,852 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [779651715] [2019-12-07 18:38:04,852 INFO L442 AbstractCegarLoop]: Interpolant automaton has 37 states [2019-12-07 18:38:04,852 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 18:38:04,853 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2019-12-07 18:38:04,853 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=1159, Unknown=0, NotChecked=0, Total=1332 [2019-12-07 18:38:04,853 INFO L87 Difference]: Start difference. First operand 161 states and 187 transitions. Second operand 37 states. [2019-12-07 18:38:05,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 18:38:05,458 INFO L93 Difference]: Finished difference Result 241 states and 285 transitions. [2019-12-07 18:38:05,458 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2019-12-07 18:38:05,458 INFO L78 Accepts]: Start accepts. Automaton has 37 states. Word has length 568 [2019-12-07 18:38:05,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 18:38:05,460 INFO L225 Difference]: With dead ends: 241 [2019-12-07 18:38:05,460 INFO L226 Difference]: Without dead ends: 182 [2019-12-07 18:38:05,461 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 787 GetRequests, 728 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1166 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=481, Invalid=3179, Unknown=0, NotChecked=0, Total=3660 [2019-12-07 18:38:05,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2019-12-07 18:38:05,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 152. [2019-12-07 18:38:05,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 152 states. [2019-12-07 18:38:05,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 170 transitions. [2019-12-07 18:38:05,470 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 170 transitions. Word has length 568 [2019-12-07 18:38:05,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 18:38:05,471 INFO L462 AbstractCegarLoop]: Abstraction has 152 states and 170 transitions. [2019-12-07 18:38:05,471 INFO L463 AbstractCegarLoop]: Interpolant automaton has 37 states. [2019-12-07 18:38:05,471 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 170 transitions. [2019-12-07 18:38:05,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 460 [2019-12-07 18:38:05,473 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 18:38:05,474 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] [2019-12-07 18:38:05,674 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 18:38:05,674 INFO L410 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 18:38:05,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:38:05,675 INFO L82 PathProgramCache]: Analyzing trace with hash 706303904, now seen corresponding path program 7 times [2019-12-07 18:38:05,675 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 18:38:05,675 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [328609380] [2019-12-07 18:38:05,675 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 18:38:05,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:38:05,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:38:05,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:38:05,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:38:06,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:38:06,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:38:06,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:38:06,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:38:06,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:38:06,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:38:06,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:38:06,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:38:06,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:38:06,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:38:06,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:38:06,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:38:06,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:38:06,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:38:06,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:38:06,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:38:06,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:38:06,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:38:06,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:38:06,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:38:06,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:38:06,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:38:06,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:38:06,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:38:06,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:38:06,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:38:06,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:38:06,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:38:06,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:38:06,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:38:06,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:38:06,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:38:06,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:38:06,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:38:06,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:38:06,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:38:06,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:38:06,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:38:06,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:38:06,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:38:06,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:38:06,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:38:06,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:38:06,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:38:06,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:38:06,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:38:06,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:38:06,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:38:06,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:38:06,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:38:06,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:38:06,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:38:06,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:38:06,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:38:06,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:38:06,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:38:06,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:38:06,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:38:06,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:38:06,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:38:06,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:38:06,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:38:06,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:38:06,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:38:07,325 INFO L134 CoverageAnalysis]: Checked inductivity of 6082 backedges. 0 proven. 2033 refuted. 0 times theorem prover too weak. 4049 trivial. 0 not checked. [2019-12-07 18:38:07,325 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [328609380] [2019-12-07 18:38:07,325 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1252809991] [2019-12-07 18:38:07,325 INFO L92 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2599503b-35ca-49eb-905f-51b9b576c740/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 [2019-12-07 18:38:07,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:38:07,406 INFO L264 TraceCheckSpWp]: Trace formula consists of 1021 conjuncts, 271 conjunts are in the unsatisfiable core [2019-12-07 18:38:07,410 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 18:38:08,621 INFO L134 CoverageAnalysis]: Checked inductivity of 6082 backedges. 0 proven. 2033 refuted. 0 times theorem prover too weak. 4049 trivial. 0 not checked. [2019-12-07 18:38:08,622 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-07 18:38:08,622 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 40] total 52 [2019-12-07 18:38:08,622 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2106896626] [2019-12-07 18:38:08,623 INFO L442 AbstractCegarLoop]: Interpolant automaton has 52 states [2019-12-07 18:38:08,623 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 18:38:08,623 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2019-12-07 18:38:08,624 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=2527, Unknown=0, NotChecked=0, Total=2652 [2019-12-07 18:38:08,624 INFO L87 Difference]: Start difference. First operand 152 states and 170 transitions. Second operand 52 states. [2019-12-07 18:38:09,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 18:38:09,096 INFO L93 Difference]: Finished difference Result 152 states and 170 transitions. [2019-12-07 18:38:09,097 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2019-12-07 18:38:09,097 INFO L78 Accepts]: Start accepts. Automaton has 52 states. Word has length 459 [2019-12-07 18:38:09,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 18:38:09,098 INFO L225 Difference]: With dead ends: 152 [2019-12-07 18:38:09,098 INFO L226 Difference]: Without dead ends: 0 [2019-12-07 18:38:09,099 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 729 GetRequests, 644 SyntacticMatches, 35 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 273 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=125, Invalid=2527, Unknown=0, NotChecked=0, Total=2652 [2019-12-07 18:38:09,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-12-07 18:38:09,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-12-07 18:38:09,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-12-07 18:38:09,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-12-07 18:38:09,099 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 459 [2019-12-07 18:38:09,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 18:38:09,099 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-12-07 18:38:09,099 INFO L463 AbstractCegarLoop]: Interpolant automaton has 52 states. [2019-12-07 18:38:09,099 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-12-07 18:38:09,099 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-12-07 18:38:09,300 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 18:38:09,303 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-12-07 18:38:09,839 WARN L192 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 145 DAG size of output: 6 [2019-12-07 18:38:11,011 WARN L192 SmtUtils]: Spent 1.04 s on a formula simplification. DAG size of input: 159 DAG size of output: 39 [2019-12-07 18:38:11,333 WARN L192 SmtUtils]: Spent 317.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 6 [2019-12-07 18:38:11,786 WARN L192 SmtUtils]: Spent 449.00 ms on a formula simplification. DAG size of input: 160 DAG size of output: 37 [2019-12-07 18:38:11,789 INFO L246 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-12-07 18:38:11,789 INFO L246 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2019-12-07 18:38:11,789 INFO L246 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-12-07 18:38:11,789 INFO L246 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 39) no Hoare annotation was computed. [2019-12-07 18:38:11,789 INFO L242 CegarLoopResult]: At program point L41(lines 35 42) the Hoare annotation is: (<= 8 ULTIMATE.start_main_~x~0) [2019-12-07 18:38:11,789 INFO L246 CegarLoopResult]: For program point L39(line 39) no Hoare annotation was computed. [2019-12-07 18:38:11,789 INFO L246 CegarLoopResult]: For program point L38(lines 38 40) no Hoare annotation was computed. [2019-12-07 18:38:11,790 INFO L242 CegarLoopResult]: At program point L37(line 37) the Hoare annotation is: (and (<= ULTIMATE.start_main_~x~0 8) (<= 8 ULTIMATE.start_main_~x~0)) [2019-12-07 18:38:11,790 INFO L246 CegarLoopResult]: For program point L37-1(line 37) no Hoare annotation was computed. [2019-12-07 18:38:11,790 INFO L246 CegarLoopResult]: For program point L38-2(lines 38 40) no Hoare annotation was computed. [2019-12-07 18:38:11,790 INFO L249 CegarLoopResult]: At program point fibo2ENTRY(lines 17 25) the Hoare annotation is: true [2019-12-07 18:38:11,790 INFO L242 CegarLoopResult]: At program point L23(line 23) the Hoare annotation is: (and (< 1 fibo2_~n) (= fibo2_~n |fibo2_#in~n|)) [2019-12-07 18:38:11,790 INFO L246 CegarLoopResult]: For program point L23-1(line 23) no Hoare annotation was computed. [2019-12-07 18:38:11,790 INFO L242 CegarLoopResult]: At program point L23-2(line 23) the Hoare annotation is: (let ((.cse0 (<= |fibo2_#in~n| 4)) (.cse1 (= fibo2_~n |fibo2_#in~n|)) (.cse2 (<= |fibo2_#in~n| 5))) (and (< 1 fibo2_~n) (or (and (<= 1 |fibo2_#t~ret2|) (<= |fibo2_#t~ret2| 1)) (not (<= |fibo2_#in~n| 3))) (or (<= fibo2_~n 3) (not .cse0)) (or .cse0 (and (<= 6 fibo2_~n) .cse1) (and (<= 3 |fibo2_#t~ret2|) (<= |fibo2_#t~ret2| 3))) (or (and .cse1 (<= 8 fibo2_~n)) (and (<= 8 |fibo2_#t~ret2|) (<= |fibo2_#t~ret2| 8)) .cse2) (or (and .cse1 .cse2) (not (<= |fibo2_#in~n| 6))))) [2019-12-07 18:38:11,790 INFO L246 CegarLoopResult]: For program point L20(lines 20 24) no Hoare annotation was computed. [2019-12-07 18:38:11,790 INFO L246 CegarLoopResult]: For program point L23-3(line 23) no Hoare annotation was computed. [2019-12-07 18:38:11,790 INFO L246 CegarLoopResult]: For program point L18(lines 18 24) no Hoare annotation was computed. [2019-12-07 18:38:11,790 INFO L246 CegarLoopResult]: For program point fibo2FINAL(lines 17 25) no Hoare annotation was computed. [2019-12-07 18:38:11,791 INFO L246 CegarLoopResult]: For program point fibo2EXIT(lines 17 25) no Hoare annotation was computed. [2019-12-07 18:38:11,791 INFO L249 CegarLoopResult]: At program point fibo1ENTRY(lines 7 15) the Hoare annotation is: true [2019-12-07 18:38:11,791 INFO L242 CegarLoopResult]: At program point L13(line 13) the Hoare annotation is: (and (< 1 fibo1_~n) (= fibo1_~n |fibo1_#in~n|)) [2019-12-07 18:38:11,791 INFO L246 CegarLoopResult]: For program point L13-1(line 13) no Hoare annotation was computed. [2019-12-07 18:38:11,791 INFO L242 CegarLoopResult]: At program point L13-2(line 13) the Hoare annotation is: (let ((.cse0 (= fibo1_~n |fibo1_#in~n|))) (and (or (not (<= |fibo1_#in~n| 5)) (and (< 1 fibo1_~n) (<= |fibo1_#in~n| 2) .cse0)) (or (and (<= 1 |fibo1_#t~ret0|) (<= |fibo1_#t~ret0| 1)) (<= 5 fibo1_~n)) (or (and (<= 13 |fibo1_#t~ret0|) (<= |fibo1_#t~ret0| 13)) (<= 9 |fibo1_#in~n|) (<= |fibo1_#in~n| 7)) (or (and (<= |fibo1_#t~ret0| 5) (<= 5 |fibo1_#t~ret0|) .cse0) (and (<= 7 fibo1_~n) .cse0) (not (<= 3 |fibo1_#in~n|))))) [2019-12-07 18:38:11,791 INFO L246 CegarLoopResult]: For program point fibo1FINAL(lines 7 15) no Hoare annotation was computed. [2019-12-07 18:38:11,791 INFO L246 CegarLoopResult]: For program point L10(lines 10 14) no Hoare annotation was computed. [2019-12-07 18:38:11,791 INFO L246 CegarLoopResult]: For program point L13-3(line 13) no Hoare annotation was computed. [2019-12-07 18:38:11,791 INFO L246 CegarLoopResult]: For program point L8(lines 8 14) no Hoare annotation was computed. [2019-12-07 18:38:11,791 INFO L246 CegarLoopResult]: For program point fibo1EXIT(lines 7 15) no Hoare annotation was computed. [2019-12-07 18:38:11,804 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.12 06:38:11 BoogieIcfgContainer [2019-12-07 18:38:11,804 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-12-07 18:38:11,805 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-12-07 18:38:11,805 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-12-07 18:38:11,805 INFO L275 PluginConnector]: Witness Printer initialized [2019-12-07 18:38:11,806 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 06:37:47" (3/4) ... [2019-12-07 18:38:11,808 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-12-07 18:38:11,815 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure fibo2 [2019-12-07 18:38:11,815 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure fibo1 [2019-12-07 18:38:11,819 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2019-12-07 18:38:11,819 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2019-12-07 18:38:11,852 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_2599503b-35ca-49eb-905f-51b9b576c740/bin/uautomizer/witness.graphml [2019-12-07 18:38:11,852 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-12-07 18:38:11,853 INFO L168 Benchmark]: Toolchain (without parser) took 24354.59 ms. Allocated memory was 1.0 GB in the beginning and 2.2 GB in the end (delta: 1.1 GB). Free memory was 943.6 MB in the beginning and 1.4 GB in the end (delta: -483.5 MB). Peak memory consumption was 642.6 MB. Max. memory is 11.5 GB. [2019-12-07 18:38:11,854 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 958.7 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 18:38:11,854 INFO L168 Benchmark]: CACSL2BoogieTranslator took 175.84 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 99.1 MB). Free memory was 943.6 MB in the beginning and 1.1 GB in the end (delta: -150.3 MB). Peak memory consumption was 23.2 MB. Max. memory is 11.5 GB. [2019-12-07 18:38:11,854 INFO L168 Benchmark]: Boogie Procedure Inliner took 20.26 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 18:38:11,855 INFO L168 Benchmark]: Boogie Preprocessor took 11.79 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 18:38:11,855 INFO L168 Benchmark]: RCFGBuilder took 155.78 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 16.6 MB). Peak memory consumption was 16.6 MB. Max. memory is 11.5 GB. [2019-12-07 18:38:11,855 INFO L168 Benchmark]: TraceAbstraction took 23940.29 ms. Allocated memory was 1.1 GB in the beginning and 2.2 GB in the end (delta: 1.0 GB). Free memory was 1.1 GB in the beginning and 1.4 GB in the end (delta: -358.5 MB). Peak memory consumption was 668.6 MB. Max. memory is 11.5 GB. [2019-12-07 18:38:11,856 INFO L168 Benchmark]: Witness Printer took 47.40 ms. Allocated memory is still 2.2 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 8.7 MB). Peak memory consumption was 8.7 MB. Max. memory is 11.5 GB. [2019-12-07 18:38:11,857 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 958.7 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 175.84 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 99.1 MB). Free memory was 943.6 MB in the beginning and 1.1 GB in the end (delta: -150.3 MB). Peak memory consumption was 23.2 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 20.26 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 11.79 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 155.78 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 16.6 MB). Peak memory consumption was 16.6 MB. Max. memory is 11.5 GB. * TraceAbstraction took 23940.29 ms. Allocated memory was 1.1 GB in the beginning and 2.2 GB in the end (delta: 1.0 GB). Free memory was 1.1 GB in the beginning and 1.4 GB in the end (delta: -358.5 MB). Peak memory consumption was 668.6 MB. Max. memory is 11.5 GB. * Witness Printer took 47.40 ms. Allocated memory is still 2.2 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 8.7 MB). Peak memory consumption was 8.7 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: 21.4s, OverallIterations: 15, TraceHistogramMax: 61, AutomataDifference: 6.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 2.4s, HoareTripleCheckerStatistics: 522 SDtfs, 1311 SDslu, 6140 SDs, 0 SdLazy, 9481 SolverSat, 1721 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 3.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 4848 GetRequests, 4321 SyntacticMatches, 37 SemanticMatches, 490 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6833 ImplicationChecksByTransitivity, 5.5s 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: 0.1s AutomataMinimizationTime, 15 MinimizatonAttempts, 242 StatesRemovedByMinimization, 13 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 8 LocationsWithAnnotation, 716 PreInvPairs, 1164 NumberOfFragments, 161 HoareAnnotationTreeSize, 716 FomulaSimplifications, 13370 FormulaSimplificationTreeSizeReduction, 0.3s HoareSimplificationTime, 8 FomulaSimplificationsInter, 19812 FormulaSimplificationTreeSizeReductionInter, 2.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.8s SatisfiabilityAnalysisTime, 9.9s 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...