./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/recursive/Fibonacci03.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version cad46833 Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_facdd0df-d5d9-43da-bc1d-55a84354d0c9/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_facdd0df-d5d9-43da-bc1d-55a84354d0c9/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_facdd0df-d5d9-43da-bc1d-55a84354d0c9/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_facdd0df-d5d9-43da-bc1d-55a84354d0c9/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/recursive/Fibonacci03.c -s /tmp/vcloud-vcloud-master/worker/working_dir_facdd0df-d5d9-43da-bc1d-55a84354d0c9/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_facdd0df-d5d9-43da-bc1d-55a84354d0c9/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 6e1fd2ba6533b7d8cc379ec5987b906d551e69a3 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-cad4683 [2019-10-22 08:54:48,847 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-22 08:54:48,848 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-22 08:54:48,857 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-22 08:54:48,857 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-22 08:54:48,858 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-22 08:54:48,859 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-22 08:54:48,860 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-22 08:54:48,861 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-22 08:54:48,862 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-22 08:54:48,863 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-22 08:54:48,863 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-22 08:54:48,864 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-22 08:54:48,864 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-22 08:54:48,865 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-22 08:54:48,866 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-22 08:54:48,867 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-22 08:54:48,867 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-22 08:54:48,869 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-22 08:54:48,870 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-22 08:54:48,871 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-22 08:54:48,872 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-22 08:54:48,873 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-22 08:54:48,874 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-22 08:54:48,875 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-22 08:54:48,876 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-22 08:54:48,876 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-22 08:54:48,876 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-22 08:54:48,877 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-22 08:54:48,877 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-22 08:54:48,878 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-22 08:54:48,878 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-22 08:54:48,879 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-22 08:54:48,879 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-22 08:54:48,880 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-22 08:54:48,880 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-22 08:54:48,881 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-22 08:54:48,881 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-22 08:54:48,881 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-22 08:54:48,882 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-22 08:54:48,883 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-22 08:54:48,883 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_facdd0df-d5d9-43da-bc1d-55a84354d0c9/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-22 08:54:48,894 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-22 08:54:48,894 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-22 08:54:48,895 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-22 08:54:48,895 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-22 08:54:48,895 INFO L138 SettingsManager]: * Use SBE=true [2019-10-22 08:54:48,895 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-22 08:54:48,896 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-22 08:54:48,896 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-22 08:54:48,896 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-22 08:54:48,896 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-22 08:54:48,896 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-22 08:54:48,896 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-22 08:54:48,896 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-22 08:54:48,897 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-22 08:54:48,897 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-22 08:54:48,897 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-22 08:54:48,897 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-22 08:54:48,897 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-22 08:54:48,898 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-22 08:54:48,898 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-22 08:54:48,898 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-22 08:54:48,898 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-22 08:54:48,898 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-22 08:54:48,898 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-22 08:54:48,899 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-22 08:54:48,899 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-22 08:54:48,899 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-22 08:54:48,899 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-22 08:54:48,899 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/working_dir_facdd0df-d5d9-43da-bc1d-55a84354d0c9/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 -> 6e1fd2ba6533b7d8cc379ec5987b906d551e69a3 [2019-10-22 08:54:48,922 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-22 08:54:48,931 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-22 08:54:48,934 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-22 08:54:48,935 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-22 08:54:48,936 INFO L275 PluginConnector]: CDTParser initialized [2019-10-22 08:54:48,936 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_facdd0df-d5d9-43da-bc1d-55a84354d0c9/bin/uautomizer/../../sv-benchmarks/c/recursive/Fibonacci03.c [2019-10-22 08:54:48,983 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_facdd0df-d5d9-43da-bc1d-55a84354d0c9/bin/uautomizer/data/8f0e50c29/7f1dc90ed06a4f66aa2c11973f8bd73a/FLAGc51a70b8e [2019-10-22 08:54:49,370 INFO L306 CDTParser]: Found 1 translation units. [2019-10-22 08:54:49,370 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_facdd0df-d5d9-43da-bc1d-55a84354d0c9/sv-benchmarks/c/recursive/Fibonacci03.c [2019-10-22 08:54:49,374 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_facdd0df-d5d9-43da-bc1d-55a84354d0c9/bin/uautomizer/data/8f0e50c29/7f1dc90ed06a4f66aa2c11973f8bd73a/FLAGc51a70b8e [2019-10-22 08:54:49,383 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_facdd0df-d5d9-43da-bc1d-55a84354d0c9/bin/uautomizer/data/8f0e50c29/7f1dc90ed06a4f66aa2c11973f8bd73a [2019-10-22 08:54:49,385 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-22 08:54:49,386 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-10-22 08:54:49,387 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-22 08:54:49,387 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-22 08:54:49,390 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-22 08:54:49,391 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 08:54:49" (1/1) ... [2019-10-22 08:54:49,393 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@182b198d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:54:49, skipping insertion in model container [2019-10-22 08:54:49,393 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 08:54:49" (1/1) ... [2019-10-22 08:54:49,400 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-22 08:54:49,413 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-22 08:54:49,560 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 08:54:49,567 INFO L188 MainTranslator]: Completed pre-run [2019-10-22 08:54:49,640 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 08:54:49,654 INFO L192 MainTranslator]: Completed translation [2019-10-22 08:54:49,655 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:54:49 WrapperNode [2019-10-22 08:54:49,655 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-22 08:54:49,656 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-10-22 08:54:49,656 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-10-22 08:54:49,656 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-10-22 08:54:49,666 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:54:49" (1/1) ... [2019-10-22 08:54:49,670 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:54:49" (1/1) ... [2019-10-22 08:54:49,685 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-10-22 08:54:49,685 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-22 08:54:49,686 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-22 08:54:49,686 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-22 08:54:49,691 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:54:49" (1/1) ... [2019-10-22 08:54:49,692 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:54:49" (1/1) ... [2019-10-22 08:54:49,692 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:54:49" (1/1) ... [2019-10-22 08:54:49,692 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:54:49" (1/1) ... [2019-10-22 08:54:49,694 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:54:49" (1/1) ... [2019-10-22 08:54:49,695 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:54:49" (1/1) ... [2019-10-22 08:54:49,696 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:54:49" (1/1) ... [2019-10-22 08:54:49,697 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-22 08:54:49,698 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-22 08:54:49,698 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-22 08:54:49,698 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-22 08:54:49,699 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:54:49" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_facdd0df-d5d9-43da-bc1d-55a84354d0c9/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 [2019-10-22 08:54:49,749 INFO L130 BoogieDeclarations]: Found specification of procedure fibonacci [2019-10-22 08:54:49,750 INFO L138 BoogieDeclarations]: Found implementation of procedure fibonacci [2019-10-22 08:54:49,750 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-22 08:54:49,750 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-22 08:54:49,894 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-22 08:54:49,894 INFO L284 CfgBuilder]: Removed 4 assume(true) statements. [2019-10-22 08:54:49,895 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 08:54:49 BoogieIcfgContainer [2019-10-22 08:54:49,895 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-22 08:54:49,896 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-22 08:54:49,896 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-22 08:54:49,899 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-22 08:54:49,900 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.10 08:54:49" (1/3) ... [2019-10-22 08:54:49,901 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@766d534b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 08:54:49, skipping insertion in model container [2019-10-22 08:54:49,901 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:54:49" (2/3) ... [2019-10-22 08:54:49,902 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@766d534b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 08:54:49, skipping insertion in model container [2019-10-22 08:54:49,909 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 08:54:49" (3/3) ... [2019-10-22 08:54:49,911 INFO L109 eAbstractionObserver]: Analyzing ICFG Fibonacci03.c [2019-10-22 08:54:49,920 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-22 08:54:49,938 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-22 08:54:49,953 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-22 08:54:49,998 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-22 08:54:49,998 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-22 08:54:49,998 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-22 08:54:49,999 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-22 08:54:49,999 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-22 08:54:49,999 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-22 08:54:49,999 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-22 08:54:49,999 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-22 08:54:50,025 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states. [2019-10-22 08:54:50,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-10-22 08:54:50,050 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:54:50,051 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 08:54:50,053 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 08:54:50,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:54:50,064 INFO L82 PathProgramCache]: Analyzing trace with hash -337677157, now seen corresponding path program 1 times [2019-10-22 08:54:50,071 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:54:50,072 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1218089137] [2019-10-22 08:54:50,072 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:54:50,072 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:54:50,072 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:54:50,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:54:50,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:54:50,217 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:54:50,218 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1218089137] [2019-10-22 08:54:50,218 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 08:54:50,219 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-22 08:54:50,219 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [93828472] [2019-10-22 08:54:50,223 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-22 08:54:50,223 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:54:50,233 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-22 08:54:50,234 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-22 08:54:50,236 INFO L87 Difference]: Start difference. First operand 19 states. Second operand 5 states. [2019-10-22 08:54:50,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:54:50,322 INFO L93 Difference]: Finished difference Result 31 states and 37 transitions. [2019-10-22 08:54:50,322 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-22 08:54:50,323 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2019-10-22 08:54:50,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:54:50,331 INFO L225 Difference]: With dead ends: 31 [2019-10-22 08:54:50,331 INFO L226 Difference]: Without dead ends: 18 [2019-10-22 08:54:50,334 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-10-22 08:54:50,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2019-10-22 08:54:50,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2019-10-22 08:54:50,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2019-10-22 08:54:50,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 22 transitions. [2019-10-22 08:54:50,369 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 22 transitions. Word has length 10 [2019-10-22 08:54:50,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:54:50,369 INFO L462 AbstractCegarLoop]: Abstraction has 18 states and 22 transitions. [2019-10-22 08:54:50,369 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-22 08:54:50,369 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 22 transitions. [2019-10-22 08:54:50,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-10-22 08:54:50,371 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:54:50,371 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 08:54:50,371 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 08:54:50,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:54:50,371 INFO L82 PathProgramCache]: Analyzing trace with hash -1185838437, now seen corresponding path program 1 times [2019-10-22 08:54:50,372 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:54:50,372 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [816003323] [2019-10-22 08:54:50,372 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:54:50,372 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:54:50,372 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:54:50,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:54:50,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:54:50,419 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:54:50,419 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [816003323] [2019-10-22 08:54:50,419 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 08:54:50,419 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-22 08:54:50,420 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1590134447] [2019-10-22 08:54:50,421 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-22 08:54:50,421 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:54:50,422 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-22 08:54:50,422 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-22 08:54:50,422 INFO L87 Difference]: Start difference. First operand 18 states and 22 transitions. Second operand 5 states. [2019-10-22 08:54:50,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:54:50,471 INFO L93 Difference]: Finished difference Result 24 states and 29 transitions. [2019-10-22 08:54:50,471 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-22 08:54:50,472 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2019-10-22 08:54:50,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:54:50,472 INFO L225 Difference]: With dead ends: 24 [2019-10-22 08:54:50,473 INFO L226 Difference]: Without dead ends: 20 [2019-10-22 08:54:50,473 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-10-22 08:54:50,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2019-10-22 08:54:50,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 18. [2019-10-22 08:54:50,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2019-10-22 08:54:50,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 22 transitions. [2019-10-22 08:54:50,479 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 22 transitions. Word has length 11 [2019-10-22 08:54:50,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:54:50,479 INFO L462 AbstractCegarLoop]: Abstraction has 18 states and 22 transitions. [2019-10-22 08:54:50,480 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-22 08:54:50,480 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 22 transitions. [2019-10-22 08:54:50,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2019-10-22 08:54:50,480 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:54:50,481 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 08:54:50,481 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 08:54:50,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:54:50,482 INFO L82 PathProgramCache]: Analyzing trace with hash -461887010, now seen corresponding path program 1 times [2019-10-22 08:54:50,482 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:54:50,482 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [821897936] [2019-10-22 08:54:50,482 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:54:50,482 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:54:50,483 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:54:50,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:54:50,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:54:50,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:54:50,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:54:50,600 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-10-22 08:54:50,601 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [821897936] [2019-10-22 08:54:50,601 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [222865109] [2019-10-22 08:54:50,601 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_facdd0df-d5d9-43da-bc1d-55a84354d0c9/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 [2019-10-22 08:54:50,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:54:50,655 INFO L256 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-22 08:54:50,660 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 08:54:50,723 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-10-22 08:54:50,724 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-22 08:54:50,725 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 9 [2019-10-22 08:54:50,725 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [525606898] [2019-10-22 08:54:50,725 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-22 08:54:50,725 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:54:50,726 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-22 08:54:50,726 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2019-10-22 08:54:50,726 INFO L87 Difference]: Start difference. First operand 18 states and 22 transitions. Second operand 9 states. [2019-10-22 08:54:50,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:54:50,836 INFO L93 Difference]: Finished difference Result 35 states and 46 transitions. [2019-10-22 08:54:50,837 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-22 08:54:50,837 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 23 [2019-10-22 08:54:50,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:54:50,838 INFO L225 Difference]: With dead ends: 35 [2019-10-22 08:54:50,838 INFO L226 Difference]: Without dead ends: 20 [2019-10-22 08:54:50,839 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2019-10-22 08:54:50,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2019-10-22 08:54:50,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2019-10-22 08:54:50,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2019-10-22 08:54:50,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 24 transitions. [2019-10-22 08:54:50,844 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 24 transitions. Word has length 23 [2019-10-22 08:54:50,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:54:50,844 INFO L462 AbstractCegarLoop]: Abstraction has 20 states and 24 transitions. [2019-10-22 08:54:50,844 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-22 08:54:50,844 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 24 transitions. [2019-10-22 08:54:50,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2019-10-22 08:54:50,846 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:54:50,846 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 08:54:51,046 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 08:54:51,047 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 08:54:51,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:54:51,048 INFO L82 PathProgramCache]: Analyzing trace with hash 1032875874, now seen corresponding path program 1 times [2019-10-22 08:54:51,048 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:54:51,048 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1856621532] [2019-10-22 08:54:51,048 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:54:51,048 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:54:51,048 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:54:51,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:54:51,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:54:51,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:54:51,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:54:51,170 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-10-22 08:54:51,171 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1856621532] [2019-10-22 08:54:51,171 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1199477725] [2019-10-22 08:54:51,171 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_facdd0df-d5d9-43da-bc1d-55a84354d0c9/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 [2019-10-22 08:54:51,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:54:51,203 INFO L256 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-22 08:54:51,205 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 08:54:51,219 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-10-22 08:54:51,219 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-22 08:54:51,220 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 8 [2019-10-22 08:54:51,220 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1796029667] [2019-10-22 08:54:51,220 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-22 08:54:51,220 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:54:51,221 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-22 08:54:51,221 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2019-10-22 08:54:51,221 INFO L87 Difference]: Start difference. First operand 20 states and 24 transitions. Second operand 8 states. [2019-10-22 08:54:51,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:54:51,314 INFO L93 Difference]: Finished difference Result 38 states and 52 transitions. [2019-10-22 08:54:51,314 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-22 08:54:51,314 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 24 [2019-10-22 08:54:51,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:54:51,316 INFO L225 Difference]: With dead ends: 38 [2019-10-22 08:54:51,316 INFO L226 Difference]: Without dead ends: 34 [2019-10-22 08:54:51,316 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2019-10-22 08:54:51,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2019-10-22 08:54:51,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2019-10-22 08:54:51,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2019-10-22 08:54:51,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 48 transitions. [2019-10-22 08:54:51,328 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 48 transitions. Word has length 24 [2019-10-22 08:54:51,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:54:51,328 INFO L462 AbstractCegarLoop]: Abstraction has 34 states and 48 transitions. [2019-10-22 08:54:51,328 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-22 08:54:51,328 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 48 transitions. [2019-10-22 08:54:51,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2019-10-22 08:54:51,331 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:54:51,332 INFO L380 BasicCegarLoop]: trace histogram [5, 5, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 08:54:51,532 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 08:54:51,533 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 08:54:51,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:54:51,533 INFO L82 PathProgramCache]: Analyzing trace with hash 498258551, now seen corresponding path program 2 times [2019-10-22 08:54:51,533 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:54:51,533 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [174294605] [2019-10-22 08:54:51,534 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:54:51,534 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:54:51,534 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:54:51,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:54:51,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:54:51,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:54:51,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:54:51,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:54:51,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:54:51,662 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 23 proven. 7 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2019-10-22 08:54:51,662 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [174294605] [2019-10-22 08:54:51,663 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1727912706] [2019-10-22 08:54:51,663 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_facdd0df-d5d9-43da-bc1d-55a84354d0c9/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 [2019-10-22 08:54:51,695 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-10-22 08:54:51,696 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-22 08:54:51,696 INFO L256 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-22 08:54:51,698 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 08:54:51,755 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 6 proven. 21 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2019-10-22 08:54:51,755 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-22 08:54:51,755 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7] total 14 [2019-10-22 08:54:51,755 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [933688776] [2019-10-22 08:54:51,756 INFO L442 AbstractCegarLoop]: Interpolant automaton has 14 states [2019-10-22 08:54:51,756 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:54:51,756 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2019-10-22 08:54:51,757 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2019-10-22 08:54:51,757 INFO L87 Difference]: Start difference. First operand 34 states and 48 transitions. Second operand 14 states. [2019-10-22 08:54:51,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:54:51,957 INFO L93 Difference]: Finished difference Result 68 states and 103 transitions. [2019-10-22 08:54:51,958 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2019-10-22 08:54:51,958 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 37 [2019-10-22 08:54:51,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:54:51,959 INFO L225 Difference]: With dead ends: 68 [2019-10-22 08:54:51,959 INFO L226 Difference]: Without dead ends: 35 [2019-10-22 08:54:51,960 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=91, Invalid=289, Unknown=0, NotChecked=0, Total=380 [2019-10-22 08:54:51,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2019-10-22 08:54:51,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2019-10-22 08:54:51,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2019-10-22 08:54:51,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 43 transitions. [2019-10-22 08:54:51,967 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 43 transitions. Word has length 37 [2019-10-22 08:54:51,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:54:51,967 INFO L462 AbstractCegarLoop]: Abstraction has 35 states and 43 transitions. [2019-10-22 08:54:51,968 INFO L463 AbstractCegarLoop]: Interpolant automaton has 14 states. [2019-10-22 08:54:51,968 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 43 transitions. [2019-10-22 08:54:51,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2019-10-22 08:54:51,969 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:54:51,969 INFO L380 BasicCegarLoop]: trace histogram [9, 9, 7, 4, 4, 4, 4, 4, 4, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 08:54:52,170 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 08:54:52,170 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 08:54:52,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:54:52,170 INFO L82 PathProgramCache]: Analyzing trace with hash -2059564305, now seen corresponding path program 3 times [2019-10-22 08:54:52,171 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:54:52,171 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [950705977] [2019-10-22 08:54:52,171 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:54:52,171 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:54:52,171 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:54:52,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:54:52,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:54:52,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:54:52,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:54:52,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:54:52,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:54:52,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:54:52,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:54:52,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:54:52,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:54:52,401 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 17 proven. 88 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2019-10-22 08:54:52,401 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [950705977] [2019-10-22 08:54:52,402 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1648772091] [2019-10-22 08:54:52,402 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_facdd0df-d5d9-43da-bc1d-55a84354d0c9/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 [2019-10-22 08:54:52,439 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2019-10-22 08:54:52,439 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-22 08:54:52,440 INFO L256 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-22 08:54:52,443 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 08:54:52,464 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 66 proven. 25 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2019-10-22 08:54:52,465 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-22 08:54:52,465 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 7] total 12 [2019-10-22 08:54:52,465 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [795710026] [2019-10-22 08:54:52,465 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-10-22 08:54:52,466 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:54:52,466 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-10-22 08:54:52,466 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2019-10-22 08:54:52,466 INFO L87 Difference]: Start difference. First operand 35 states and 43 transitions. Second operand 12 states. [2019-10-22 08:54:52,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:54:52,586 INFO L93 Difference]: Finished difference Result 77 states and 108 transitions. [2019-10-22 08:54:52,586 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-22 08:54:52,586 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 65 [2019-10-22 08:54:52,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:54:52,589 INFO L225 Difference]: With dead ends: 77 [2019-10-22 08:54:52,590 INFO L226 Difference]: Without dead ends: 73 [2019-10-22 08:54:52,590 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2019-10-22 08:54:52,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2019-10-22 08:54:52,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 67. [2019-10-22 08:54:52,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2019-10-22 08:54:52,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 95 transitions. [2019-10-22 08:54:52,603 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 95 transitions. Word has length 65 [2019-10-22 08:54:52,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:54:52,604 INFO L462 AbstractCegarLoop]: Abstraction has 67 states and 95 transitions. [2019-10-22 08:54:52,604 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-10-22 08:54:52,604 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 95 transitions. [2019-10-22 08:54:52,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2019-10-22 08:54:52,606 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:54:52,607 INFO L380 BasicCegarLoop]: trace histogram [21, 21, 17, 10, 10, 10, 10, 10, 10, 10, 7, 4, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 08:54:52,807 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 08:54:52,807 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 08:54:52,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:54:52,808 INFO L82 PathProgramCache]: Analyzing trace with hash -270971525, now seen corresponding path program 4 times [2019-10-22 08:54:52,808 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:54:52,808 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1190921883] [2019-10-22 08:54:52,808 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:54:52,808 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:54:52,808 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:54:52,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:54:52,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:54:52,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:54:53,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:54:53,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:54:53,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:54:53,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:54:53,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:54:53,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:54:53,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:54:53,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:54:53,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:54:53,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:54:53,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:54:53,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:54:53,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:54:53,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:54:53,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:54:53,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:54:53,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:54:53,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:54:53,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:54:53,340 INFO L134 CoverageAnalysis]: Checked inductivity of 1156 backedges. 309 proven. 340 refuted. 0 times theorem prover too weak. 507 trivial. 0 not checked. [2019-10-22 08:54:53,340 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1190921883] [2019-10-22 08:54:53,340 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [963302984] [2019-10-22 08:54:53,340 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_facdd0df-d5d9-43da-bc1d-55a84354d0c9/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 [2019-10-22 08:54:53,390 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-10-22 08:54:53,390 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-22 08:54:53,392 INFO L256 TraceCheckSpWp]: Trace formula consists of 259 conjuncts, 17 conjunts are in the unsatisfiable core [2019-10-22 08:54:53,396 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 08:54:53,476 INFO L134 CoverageAnalysis]: Checked inductivity of 1156 backedges. 222 proven. 397 refuted. 0 times theorem prover too weak. 537 trivial. 0 not checked. [2019-10-22 08:54:53,476 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-22 08:54:53,476 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 13] total 23 [2019-10-22 08:54:53,476 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1066869221] [2019-10-22 08:54:53,477 INFO L442 AbstractCegarLoop]: Interpolant automaton has 23 states [2019-10-22 08:54:53,477 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:54:53,477 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2019-10-22 08:54:53,478 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=402, Unknown=0, NotChecked=0, Total=506 [2019-10-22 08:54:53,478 INFO L87 Difference]: Start difference. First operand 67 states and 95 transitions. Second operand 23 states. [2019-10-22 08:54:53,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:54:53,828 INFO L93 Difference]: Finished difference Result 134 states and 224 transitions. [2019-10-22 08:54:53,828 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2019-10-22 08:54:53,829 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 147 [2019-10-22 08:54:53,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:54:53,830 INFO L225 Difference]: With dead ends: 134 [2019-10-22 08:54:53,831 INFO L226 Difference]: Without dead ends: 70 [2019-10-22 08:54:53,832 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 219 GetRequests, 188 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 242 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=225, Invalid=767, Unknown=0, NotChecked=0, Total=992 [2019-10-22 08:54:53,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2019-10-22 08:54:53,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 57. [2019-10-22 08:54:53,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2019-10-22 08:54:53,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 72 transitions. [2019-10-22 08:54:53,841 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 72 transitions. Word has length 147 [2019-10-22 08:54:53,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:54:53,842 INFO L462 AbstractCegarLoop]: Abstraction has 57 states and 72 transitions. [2019-10-22 08:54:53,842 INFO L463 AbstractCegarLoop]: Interpolant automaton has 23 states. [2019-10-22 08:54:53,842 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 72 transitions. [2019-10-22 08:54:53,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2019-10-22 08:54:53,843 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:54:53,844 INFO L380 BasicCegarLoop]: trace histogram [15, 15, 12, 7, 7, 7, 7, 7, 7, 7, 5, 3, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 08:54:54,044 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 08:54:54,045 INFO L410 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 08:54:54,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:54:54,045 INFO L82 PathProgramCache]: Analyzing trace with hash 1624397958, now seen corresponding path program 5 times [2019-10-22 08:54:54,045 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:54:54,045 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [130309287] [2019-10-22 08:54:54,045 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:54:54,045 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:54:54,045 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:54:54,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:54:54,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:54:54,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:54:54,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:54:54,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:54:54,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:54:54,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:54:54,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:54:54,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:54:54,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:54:54,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:54:54,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:54:54,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:54:54,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:54:54,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:54:54,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:54:54,224 INFO L134 CoverageAnalysis]: Checked inductivity of 570 backedges. 42 proven. 229 refuted. 0 times theorem prover too weak. 299 trivial. 0 not checked. [2019-10-22 08:54:54,225 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [130309287] [2019-10-22 08:54:54,225 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [532506508] [2019-10-22 08:54:54,225 INFO L92 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_facdd0df-d5d9-43da-bc1d-55a84354d0c9/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 [2019-10-22 08:54:54,284 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 13 check-sat command(s) [2019-10-22 08:54:54,284 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-22 08:54:54,285 INFO L256 TraceCheckSpWp]: Trace formula consists of 239 conjuncts, 12 conjunts are in the unsatisfiable core [2019-10-22 08:54:54,288 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 08:54:54,321 INFO L134 CoverageAnalysis]: Checked inductivity of 570 backedges. 42 proven. 229 refuted. 0 times theorem prover too weak. 299 trivial. 0 not checked. [2019-10-22 08:54:54,321 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-22 08:54:54,321 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 9] total 14 [2019-10-22 08:54:54,321 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1180578620] [2019-10-22 08:54:54,322 INFO L442 AbstractCegarLoop]: Interpolant automaton has 14 states [2019-10-22 08:54:54,322 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:54:54,323 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2019-10-22 08:54:54,323 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=122, Unknown=0, NotChecked=0, Total=182 [2019-10-22 08:54:54,323 INFO L87 Difference]: Start difference. First operand 57 states and 72 transitions. Second operand 14 states. [2019-10-22 08:54:54,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:54:54,468 INFO L93 Difference]: Finished difference Result 64 states and 81 transitions. [2019-10-22 08:54:54,468 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-10-22 08:54:54,468 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 106 [2019-10-22 08:54:54,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:54:54,470 INFO L225 Difference]: With dead ends: 64 [2019-10-22 08:54:54,470 INFO L226 Difference]: Without dead ends: 60 [2019-10-22 08:54:54,471 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2019-10-22 08:54:54,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2019-10-22 08:54:54,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2019-10-22 08:54:54,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2019-10-22 08:54:54,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 77 transitions. [2019-10-22 08:54:54,479 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 77 transitions. Word has length 106 [2019-10-22 08:54:54,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:54:54,480 INFO L462 AbstractCegarLoop]: Abstraction has 60 states and 77 transitions. [2019-10-22 08:54:54,480 INFO L463 AbstractCegarLoop]: Interpolant automaton has 14 states. [2019-10-22 08:54:54,480 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 77 transitions. [2019-10-22 08:54:54,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2019-10-22 08:54:54,482 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:54:54,482 INFO L380 BasicCegarLoop]: trace histogram [25, 25, 20, 12, 12, 12, 12, 12, 12, 12, 8, 5, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 08:54:54,683 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 08:54:54,683 INFO L410 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 08:54:54,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:54:54,684 INFO L82 PathProgramCache]: Analyzing trace with hash -1761307917, now seen corresponding path program 6 times [2019-10-22 08:54:54,684 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:54:54,684 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [437631064] [2019-10-22 08:54:54,684 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:54:54,684 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:54:54,684 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:54:54,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:54:54,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:54:54,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:54:54,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:54:54,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:54:54,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:54:54,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:54:54,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:54:54,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:54:54,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:54:54,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:54:54,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:54:54,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:54:54,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:54:54,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:54:54,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:54:54,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:54:54,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:54:54,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:54:54,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:54:54,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:54:54,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:54:54,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:54:54,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:54:54,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:54:54,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:54:55,007 INFO L134 CoverageAnalysis]: Checked inductivity of 1654 backedges. 93 proven. 533 refuted. 0 times theorem prover too weak. 1028 trivial. 0 not checked. [2019-10-22 08:54:55,007 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [437631064] [2019-10-22 08:54:55,008 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1139590109] [2019-10-22 08:54:55,008 INFO L92 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_facdd0df-d5d9-43da-bc1d-55a84354d0c9/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 [2019-10-22 08:54:55,076 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 17 check-sat command(s) [2019-10-22 08:54:55,076 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-22 08:54:55,078 INFO L256 TraceCheckSpWp]: Trace formula consists of 390 conjuncts, 10 conjunts are in the unsatisfiable core [2019-10-22 08:54:55,081 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 08:54:55,119 INFO L134 CoverageAnalysis]: Checked inductivity of 1654 backedges. 202 proven. 241 refuted. 0 times theorem prover too weak. 1211 trivial. 0 not checked. [2019-10-22 08:54:55,119 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-22 08:54:55,119 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 8] total 16 [2019-10-22 08:54:55,120 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [111506243] [2019-10-22 08:54:55,120 INFO L442 AbstractCegarLoop]: Interpolant automaton has 16 states [2019-10-22 08:54:55,120 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:54:55,120 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2019-10-22 08:54:55,121 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=160, Unknown=0, NotChecked=0, Total=240 [2019-10-22 08:54:55,121 INFO L87 Difference]: Start difference. First operand 60 states and 77 transitions. Second operand 16 states. [2019-10-22 08:54:55,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:54:55,290 INFO L93 Difference]: Finished difference Result 178 states and 253 transitions. [2019-10-22 08:54:55,292 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2019-10-22 08:54:55,292 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 174 [2019-10-22 08:54:55,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:54:55,295 INFO L225 Difference]: With dead ends: 178 [2019-10-22 08:54:55,296 INFO L226 Difference]: Without dead ends: 174 [2019-10-22 08:54:55,296 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 238 GetRequests, 223 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=95, Invalid=177, Unknown=0, NotChecked=0, Total=272 [2019-10-22 08:54:55,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2019-10-22 08:54:55,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 162. [2019-10-22 08:54:55,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 162 states. [2019-10-22 08:54:55,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 230 transitions. [2019-10-22 08:54:55,327 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 230 transitions. Word has length 174 [2019-10-22 08:54:55,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:54:55,327 INFO L462 AbstractCegarLoop]: Abstraction has 162 states and 230 transitions. [2019-10-22 08:54:55,327 INFO L463 AbstractCegarLoop]: Interpolant automaton has 16 states. [2019-10-22 08:54:55,328 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 230 transitions. [2019-10-22 08:54:55,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 284 [2019-10-22 08:54:55,333 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:54:55,333 INFO L380 BasicCegarLoop]: trace histogram [41, 41, 33, 20, 20, 20, 20, 20, 20, 20, 13, 8, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 08:54:55,533 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 08:54:55,534 INFO L410 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 08:54:55,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:54:55,534 INFO L82 PathProgramCache]: Analyzing trace with hash -279331909, now seen corresponding path program 7 times [2019-10-22 08:54:55,534 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:54:55,534 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [273446370] [2019-10-22 08:54:55,534 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:54:55,534 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:54:55,534 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:54:55,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:54:55,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:54:55,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:54:55,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:54:55,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:54:55,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:54:55,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:54:55,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:54:55,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:54:55,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:54:55,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:54:55,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:54:55,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:54:55,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:54:55,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:54:55,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:54:55,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:54:55,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:54:55,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:54:55,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:54:55,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:54:55,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:54:55,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:54:55,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:54:55,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:54:55,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:54:55,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:54:55,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:54:55,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:54:56,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:54:56,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:54:56,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:54:56,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:54:56,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:54:56,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:54:56,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:54:56,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:54:56,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:54:56,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:54:56,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:54:56,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:54:56,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:54:56,162 INFO L134 CoverageAnalysis]: Checked inductivity of 4568 backedges. 189 proven. 1130 refuted. 0 times theorem prover too weak. 3249 trivial. 0 not checked. [2019-10-22 08:54:56,162 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [273446370] [2019-10-22 08:54:56,162 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [648604848] [2019-10-22 08:54:56,162 INFO L92 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_facdd0df-d5d9-43da-bc1d-55a84354d0c9/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 [2019-10-22 08:54:56,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:54:56,243 INFO L256 TraceCheckSpWp]: Trace formula consists of 632 conjuncts, 16 conjunts are in the unsatisfiable core [2019-10-22 08:54:56,247 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 08:54:56,311 INFO L134 CoverageAnalysis]: Checked inductivity of 4568 backedges. 189 proven. 1130 refuted. 0 times theorem prover too weak. 3249 trivial. 0 not checked. [2019-10-22 08:54:56,311 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-22 08:54:56,311 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 11] total 18 [2019-10-22 08:54:56,312 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [266938941] [2019-10-22 08:54:56,312 INFO L442 AbstractCegarLoop]: Interpolant automaton has 18 states [2019-10-22 08:54:56,312 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:54:56,313 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2019-10-22 08:54:56,313 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=203, Unknown=0, NotChecked=0, Total=306 [2019-10-22 08:54:56,313 INFO L87 Difference]: Start difference. First operand 162 states and 230 transitions. Second operand 18 states. [2019-10-22 08:54:56,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:54:56,534 INFO L93 Difference]: Finished difference Result 415 states and 633 transitions. [2019-10-22 08:54:56,534 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-10-22 08:54:56,535 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 283 [2019-10-22 08:54:56,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:54:56,540 INFO L225 Difference]: With dead ends: 415 [2019-10-22 08:54:56,540 INFO L226 Difference]: Without dead ends: 411 [2019-10-22 08:54:56,541 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 381 GetRequests, 364 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=120, Invalid=222, Unknown=0, NotChecked=0, Total=342 [2019-10-22 08:54:56,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 411 states. [2019-10-22 08:54:56,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 411 to 396. [2019-10-22 08:54:56,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 396 states. [2019-10-22 08:54:56,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 396 states to 396 states and 605 transitions. [2019-10-22 08:54:56,604 INFO L78 Accepts]: Start accepts. Automaton has 396 states and 605 transitions. Word has length 283 [2019-10-22 08:54:56,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:54:56,606 INFO L462 AbstractCegarLoop]: Abstraction has 396 states and 605 transitions. [2019-10-22 08:54:56,606 INFO L463 AbstractCegarLoop]: Interpolant automaton has 18 states. [2019-10-22 08:54:56,606 INFO L276 IsEmpty]: Start isEmpty. Operand 396 states and 605 transitions. [2019-10-22 08:54:56,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 461 [2019-10-22 08:54:56,617 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:54:56,617 INFO L380 BasicCegarLoop]: trace histogram [67, 67, 54, 33, 33, 33, 33, 33, 33, 33, 21, 13, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 08:54:56,818 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 08:54:56,818 INFO L410 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 08:54:56,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:54:56,819 INFO L82 PathProgramCache]: Analyzing trace with hash 1913424490, now seen corresponding path program 8 times [2019-10-22 08:54:56,819 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:54:56,819 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1713277382] [2019-10-22 08:54:56,819 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:54:56,819 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:54:56,819 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:54:56,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:54:57,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:54:57,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:54:57,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:54:57,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:54:57,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:54:57,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:54:57,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:54:57,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:54:57,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:54:57,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:54:57,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:54:57,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:54:57,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:54:57,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:54:57,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:54:57,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:54:57,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:54:57,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:54:57,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:54:57,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:54:57,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:54:57,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:54:57,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:54:57,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:54:57,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:54:57,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:54:57,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:54:57,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:54:57,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:54:57,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:54:57,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:54:57,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:54:57,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:54:57,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:54:57,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:54:57,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:54:57,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:54:57,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:54:57,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:54:57,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:54:57,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:54:57,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:54:57,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:54:57,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:54:57,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:54:57,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:54:57,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:54:57,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:54:57,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:54:57,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:54:57,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:54:57,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:54:57,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:54:57,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:54:57,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:54:57,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:54:57,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:54:57,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:54:57,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:54:57,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:54:57,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:54:57,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:54:57,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:54:57,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:54:57,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:54:57,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:54:57,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:54:57,918 INFO L134 CoverageAnalysis]: Checked inductivity of 12387 backedges. 361 proven. 2270 refuted. 0 times theorem prover too weak. 9756 trivial. 0 not checked. [2019-10-22 08:54:57,919 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1713277382] [2019-10-22 08:54:57,919 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [416623299] [2019-10-22 08:54:57,919 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_facdd0df-d5d9-43da-bc1d-55a84354d0c9/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 [2019-10-22 08:54:58,039 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-10-22 08:54:58,039 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-22 08:54:58,042 INFO L256 TraceCheckSpWp]: Trace formula consists of 1025 conjuncts, 18 conjunts are in the unsatisfiable core [2019-10-22 08:54:58,048 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 08:54:58,196 INFO L134 CoverageAnalysis]: Checked inductivity of 12387 backedges. 361 proven. 2270 refuted. 0 times theorem prover too weak. 9756 trivial. 0 not checked. [2019-10-22 08:54:58,196 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-22 08:54:58,197 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 12] total 20 [2019-10-22 08:54:58,197 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [630374168] [2019-10-22 08:54:58,197 INFO L442 AbstractCegarLoop]: Interpolant automaton has 20 states [2019-10-22 08:54:58,198 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:54:58,198 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2019-10-22 08:54:58,198 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=129, Invalid=251, Unknown=0, NotChecked=0, Total=380 [2019-10-22 08:54:58,198 INFO L87 Difference]: Start difference. First operand 396 states and 605 transitions. Second operand 20 states. [2019-10-22 08:54:58,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:54:58,476 INFO L93 Difference]: Finished difference Result 923 states and 1503 transitions. [2019-10-22 08:54:58,477 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2019-10-22 08:54:58,477 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 460 [2019-10-22 08:54:58,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:54:58,489 INFO L225 Difference]: With dead ends: 923 [2019-10-22 08:54:58,489 INFO L226 Difference]: Without dead ends: 919 [2019-10-22 08:54:58,491 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 612 GetRequests, 593 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 126 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=148, Invalid=272, Unknown=0, NotChecked=0, Total=420 [2019-10-22 08:54:58,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 919 states. [2019-10-22 08:54:58,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 919 to 901. [2019-10-22 08:54:58,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 901 states. [2019-10-22 08:54:58,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 901 states to 901 states and 1470 transitions. [2019-10-22 08:54:58,555 INFO L78 Accepts]: Start accepts. Automaton has 901 states and 1470 transitions. Word has length 460 [2019-10-22 08:54:58,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:54:58,556 INFO L462 AbstractCegarLoop]: Abstraction has 901 states and 1470 transitions. [2019-10-22 08:54:58,556 INFO L463 AbstractCegarLoop]: Interpolant automaton has 20 states. [2019-10-22 08:54:58,556 INFO L276 IsEmpty]: Start isEmpty. Operand 901 states and 1470 transitions. [2019-10-22 08:54:58,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 965 [2019-10-22 08:54:58,586 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:54:58,587 INFO L380 BasicCegarLoop]: trace histogram [141, 141, 114, 70, 70, 70, 70, 70, 70, 70, 44, 27, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 08:54:58,789 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 08:54:58,790 INFO L410 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 08:54:58,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:54:58,790 INFO L82 PathProgramCache]: Analyzing trace with hash 315828239, now seen corresponding path program 9 times [2019-10-22 08:54:58,790 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:54:58,790 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1638267871] [2019-10-22 08:54:58,790 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:54:58,790 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:54:58,791 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:54:59,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:54:59,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:54:59,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:55:00,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:55:00,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:55:00,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:55:00,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:55:00,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:55:00,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:55:00,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:55:00,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:55:00,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:55:00,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:55:00,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:55:00,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:55:00,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:55:00,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:55:00,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:55:00,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:55:00,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:55:00,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:55:00,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:55:00,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:55:00,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:55:00,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:55:00,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:55:00,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:55:00,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:55:00,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:55:00,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:55:00,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:55:00,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:55:00,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:55:00,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:55:00,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:55:00,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:55:00,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:55:00,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:55:00,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:55:00,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:55:00,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:55:00,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:55:00,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:55:00,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:55:00,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:55:00,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:55:00,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:55:00,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:55:00,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:55:00,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:55:00,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:55:00,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:55:00,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:55:00,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:55:00,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:55:00,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:55:00,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:55:00,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:55:00,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:55:00,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:55:00,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:55:00,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:55:00,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:55:00,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:55:00,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:55:00,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:55:00,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:55:00,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:55:00,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:55:00,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:55:00,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:55:01,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:55:01,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:55:01,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:55:01,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:55:01,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:55:01,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:55:01,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:55:01,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:55:01,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:55:01,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:55:01,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:55:01,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:55:01,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:55:01,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:55:01,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:55:01,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:55:01,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:55:01,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:55:01,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:55:01,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:55:01,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:55:01,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:55:01,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:55:01,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:55:01,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:55:01,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:55:01,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:55:01,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:55:01,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:55:01,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:55:01,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:55:01,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:55:01,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:55:01,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:55:01,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:55:01,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:55:01,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:55:01,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:55:01,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:55:01,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:55:01,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:55:01,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:55:01,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:55:01,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:55:01,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:55:01,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:55:01,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:55:01,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:55:01,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:55:01,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:55:01,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:55:01,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:55:01,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:55:01,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:55:01,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:55:01,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:55:01,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:55:01,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:55:01,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:55:01,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:55:01,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:55:01,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:55:01,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:55:01,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:55:01,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:55:01,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:55:01,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:55:01,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:55:01,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:55:01,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:55:01,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:55:02,894 INFO L134 CoverageAnalysis]: Checked inductivity of 55581 backedges. 9460 proven. 7695 refuted. 0 times theorem prover too weak. 38426 trivial. 0 not checked. [2019-10-22 08:55:02,896 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1638267871] [2019-10-22 08:55:02,896 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1328530765] [2019-10-22 08:55:02,897 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_facdd0df-d5d9-43da-bc1d-55a84354d0c9/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 [2019-10-22 08:55:03,247 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 71 check-sat command(s) [2019-10-22 08:55:03,247 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-22 08:55:03,250 INFO L256 TraceCheckSpWp]: Trace formula consists of 1374 conjuncts, 16 conjunts are in the unsatisfiable core [2019-10-22 08:55:03,266 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 08:55:03,688 INFO L134 CoverageAnalysis]: Checked inductivity of 55581 backedges. 5202 proven. 540 refuted. 0 times theorem prover too weak. 49839 trivial. 0 not checked. [2019-10-22 08:55:03,688 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-22 08:55:03,689 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 12] total 40 [2019-10-22 08:55:03,689 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1106485734] [2019-10-22 08:55:03,690 INFO L442 AbstractCegarLoop]: Interpolant automaton has 40 states [2019-10-22 08:55:03,690 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:55:03,691 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2019-10-22 08:55:03,691 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=300, Invalid=1260, Unknown=0, NotChecked=0, Total=1560 [2019-10-22 08:55:03,691 INFO L87 Difference]: Start difference. First operand 901 states and 1470 transitions. Second operand 40 states. [2019-10-22 08:55:05,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:55:05,018 INFO L93 Difference]: Finished difference Result 1089 states and 1970 transitions. [2019-10-22 08:55:05,018 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2019-10-22 08:55:05,018 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 964 [2019-10-22 08:55:05,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:55:05,021 INFO L225 Difference]: With dead ends: 1089 [2019-10-22 08:55:05,021 INFO L226 Difference]: Without dead ends: 191 [2019-10-22 08:55:05,028 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 1330 GetRequests, 1263 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1302 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=862, Invalid=3830, Unknown=0, NotChecked=0, Total=4692 [2019-10-22 08:55:05,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2019-10-22 08:55:05,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 139. [2019-10-22 08:55:05,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2019-10-22 08:55:05,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 213 transitions. [2019-10-22 08:55:05,037 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 213 transitions. Word has length 964 [2019-10-22 08:55:05,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:55:05,038 INFO L462 AbstractCegarLoop]: Abstraction has 139 states and 213 transitions. [2019-10-22 08:55:05,038 INFO L463 AbstractCegarLoop]: Interpolant automaton has 40 states. [2019-10-22 08:55:05,038 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 213 transitions. [2019-10-22 08:55:05,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 747 [2019-10-22 08:55:05,042 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:55:05,042 INFO L380 BasicCegarLoop]: trace histogram [109, 109, 88, 54, 54, 54, 54, 54, 54, 54, 34, 21, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 08:55:05,242 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 08:55:05,243 INFO L410 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 08:55:05,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:55:05,243 INFO L82 PathProgramCache]: Analyzing trace with hash -1222363509, now seen corresponding path program 10 times [2019-10-22 08:55:05,243 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:55:05,243 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1097928823] [2019-10-22 08:55:05,244 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:55:05,244 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:55:05,244 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:55:05,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:55:05,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:55:05,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:55:06,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:55:06,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:55:06,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:55:06,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:55:06,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:55:06,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:55:06,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:55:06,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:55:06,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:55:06,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:55:06,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:55:06,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:55:06,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:55:06,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:55:06,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:55:06,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:55:06,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:55:06,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:55:06,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:55:06,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:55:06,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:55:06,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:55:06,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:55:06,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:55:06,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:55:06,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:55:06,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:55:06,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:55:06,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:55:06,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:55:06,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:55:06,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:55:06,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:55:06,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:55:06,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:55:06,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:55:06,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:55:06,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:55:06,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:55:06,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:55:06,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:55:06,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:55:06,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:55:06,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:55:06,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:55:06,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:55:06,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:55:06,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:55:06,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:55:06,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:55:06,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:55:06,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:55:06,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:55:06,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:55:06,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:55:06,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:55:06,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:55:06,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:55:06,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:55:06,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:55:06,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:55:06,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:55:06,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:55:06,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:55:06,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:55:06,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:55:06,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:55:06,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:55:06,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:55:06,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:55:06,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:55:06,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:55:06,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:55:06,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:55:06,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:55:06,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:55:06,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:55:06,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:55:07,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:55:07,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:55:07,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:55:07,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:55:07,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:55:07,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:55:07,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:55:07,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:55:07,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:55:07,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:55:07,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:55:07,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:55:07,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:55:07,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:55:07,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:55:07,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:55:07,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:55:07,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:55:07,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:55:07,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:55:07,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:55:07,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:55:07,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:55:07,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:55:07,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:55:07,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:55:07,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:55:07,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:55:07,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:55:08,002 INFO L134 CoverageAnalysis]: Checked inductivity of 33096 backedges. 5957 proven. 4942 refuted. 0 times theorem prover too weak. 22197 trivial. 0 not checked. [2019-10-22 08:55:08,002 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1097928823] [2019-10-22 08:55:08,002 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2088951534] [2019-10-22 08:55:08,002 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_facdd0df-d5d9-43da-bc1d-55a84354d0c9/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 [2019-10-22 08:55:08,194 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-10-22 08:55:08,194 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-22 08:55:08,201 INFO L256 TraceCheckSpWp]: Trace formula consists of 1660 conjuncts, 220 conjunts are in the unsatisfiable core [2019-10-22 08:55:08,212 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 08:55:08,719 INFO L134 CoverageAnalysis]: Checked inductivity of 33096 backedges. 5957 proven. 4942 refuted. 0 times theorem prover too weak. 22197 trivial. 0 not checked. [2019-10-22 08:55:08,719 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-22 08:55:08,719 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 36 [2019-10-22 08:55:08,719 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [304762725] [2019-10-22 08:55:08,720 INFO L442 AbstractCegarLoop]: Interpolant automaton has 36 states [2019-10-22 08:55:08,720 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:55:08,721 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2019-10-22 08:55:08,721 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=247, Invalid=1013, Unknown=0, NotChecked=0, Total=1260 [2019-10-22 08:55:08,721 INFO L87 Difference]: Start difference. First operand 139 states and 213 transitions. Second operand 36 states. [2019-10-22 08:55:08,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:55:08,916 INFO L93 Difference]: Finished difference Result 140 states and 214 transitions. [2019-10-22 08:55:08,916 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2019-10-22 08:55:08,917 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 746 [2019-10-22 08:55:08,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:55:08,918 INFO L225 Difference]: With dead ends: 140 [2019-10-22 08:55:08,918 INFO L226 Difference]: Without dead ends: 0 [2019-10-22 08:55:08,919 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 1185 GetRequests, 1150 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 364 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=271, Invalid=1061, Unknown=0, NotChecked=0, Total=1332 [2019-10-22 08:55:08,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-10-22 08:55:08,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-10-22 08:55:08,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-10-22 08:55:08,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-10-22 08:55:08,920 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 746 [2019-10-22 08:55:08,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:55:08,920 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-22 08:55:08,920 INFO L463 AbstractCegarLoop]: Interpolant automaton has 36 states. [2019-10-22 08:55:08,921 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-10-22 08:55:08,921 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-10-22 08:55:09,121 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 08:55:09,124 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-10-22 08:55:09,422 WARN L191 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 7 [2019-10-22 08:55:09,765 WARN L191 SmtUtils]: Spent 327.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 38 [2019-10-22 08:55:09,768 INFO L443 ceAbstractionStarter]: For program point fibonacciFINAL(lines 14 22) no Hoare annotation was computed. [2019-10-22 08:55:09,768 INFO L446 ceAbstractionStarter]: At program point fibonacciENTRY(lines 14 22) the Hoare annotation is: true [2019-10-22 08:55:09,768 INFO L439 ceAbstractionStarter]: At program point L20(line 20) the Hoare annotation is: (and (not (<= |fibonacci_#in~n| 1)) (= fibonacci_~n |fibonacci_#in~n|)) [2019-10-22 08:55:09,768 INFO L443 ceAbstractionStarter]: For program point L20-1(line 20) no Hoare annotation was computed. [2019-10-22 08:55:09,769 INFO L439 ceAbstractionStarter]: At program point L20-2(line 20) the Hoare annotation is: (and (< 1 fibonacci_~n) (<= 1 |fibonacci_#t~ret0|) (or (and (<= fibonacci_~n 6) (<= 5 |fibonacci_#t~ret0|)) (and (<= fibonacci_~n 7) (<= 8 |fibonacci_#t~ret0|)) (and (<= 13 |fibonacci_#t~ret0|) (<= fibonacci_~n 8)) (not (<= 6 |fibonacci_#in~n|)) (<= 21 |fibonacci_#t~ret0|)) (or (<= 3 |fibonacci_#t~ret0|) (and (<= fibonacci_~n 4) (<= 2 |fibonacci_#t~ret0|)) (not (<= 4 |fibonacci_#in~n|))) (= fibonacci_~n |fibonacci_#in~n|)) [2019-10-22 08:55:09,769 INFO L443 ceAbstractionStarter]: For program point fibonacciEXIT(lines 14 22) no Hoare annotation was computed. [2019-10-22 08:55:09,769 INFO L443 ceAbstractionStarter]: For program point L17(lines 17 21) no Hoare annotation was computed. [2019-10-22 08:55:09,769 INFO L443 ceAbstractionStarter]: For program point L20-3(line 20) no Hoare annotation was computed. [2019-10-22 08:55:09,769 INFO L443 ceAbstractionStarter]: For program point L15(lines 15 21) no Hoare annotation was computed. [2019-10-22 08:55:09,769 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-10-22 08:55:09,769 INFO L443 ceAbstractionStarter]: For program point L31(lines 31 35) no Hoare annotation was computed. [2019-10-22 08:55:09,769 INFO L446 ceAbstractionStarter]: At program point L30(line 30) the Hoare annotation is: true [2019-10-22 08:55:09,769 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2019-10-22 08:55:09,769 INFO L443 ceAbstractionStarter]: For program point L30-1(line 30) no Hoare annotation was computed. [2019-10-22 08:55:09,769 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-10-22 08:55:09,769 INFO L443 ceAbstractionStarter]: For program point L27(lines 27 29) no Hoare annotation was computed. [2019-10-22 08:55:09,770 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 34) no Hoare annotation was computed. [2019-10-22 08:55:09,770 INFO L446 ceAbstractionStarter]: At program point L25(lines 25 36) the Hoare annotation is: true [2019-10-22 08:55:09,770 INFO L443 ceAbstractionStarter]: For program point L34(line 34) no Hoare annotation was computed. [2019-10-22 08:55:09,776 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.10 08:55:09 BoogieIcfgContainer [2019-10-22 08:55:09,777 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-22 08:55:09,777 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-10-22 08:55:09,777 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-10-22 08:55:09,777 INFO L275 PluginConnector]: Witness Printer initialized [2019-10-22 08:55:09,778 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 08:54:49" (3/4) ... [2019-10-22 08:55:09,782 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-10-22 08:55:09,788 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure fibonacci [2019-10-22 08:55:09,792 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2019-10-22 08:55:09,792 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2019-10-22 08:55:09,848 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_facdd0df-d5d9-43da-bc1d-55a84354d0c9/bin/uautomizer/witness.graphml [2019-10-22 08:55:09,848 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-10-22 08:55:09,850 INFO L168 Benchmark]: Toolchain (without parser) took 20463.36 ms. Allocated memory was 1.0 GB in the beginning and 2.8 GB in the end (delta: 1.8 GB). Free memory was 944.5 MB in the beginning and 1.8 GB in the end (delta: -825.3 MB). Peak memory consumption was 969.3 MB. Max. memory is 11.5 GB. [2019-10-22 08:55:09,850 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 962.0 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 08:55:09,850 INFO L168 Benchmark]: CACSL2BoogieTranslator took 268.13 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 186.6 MB). Free memory was 944.5 MB in the beginning and 1.2 GB in the end (delta: -237.0 MB). Peak memory consumption was 22.9 MB. Max. memory is 11.5 GB. [2019-10-22 08:55:09,850 INFO L168 Benchmark]: Boogie Procedure Inliner took 29.56 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 08:55:09,851 INFO L168 Benchmark]: Boogie Preprocessor took 11.93 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 08:55:09,851 INFO L168 Benchmark]: RCFGBuilder took 197.70 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 17.7 MB). Peak memory consumption was 17.7 MB. Max. memory is 11.5 GB. [2019-10-22 08:55:09,851 INFO L168 Benchmark]: TraceAbstraction took 19880.43 ms. Allocated memory was 1.2 GB in the beginning and 2.8 GB in the end (delta: 1.6 GB). Free memory was 1.2 GB in the beginning and 1.8 GB in the end (delta: -625.1 MB). Peak memory consumption was 982.8 MB. Max. memory is 11.5 GB. [2019-10-22 08:55:09,851 INFO L168 Benchmark]: Witness Printer took 71.59 ms. Allocated memory is still 2.8 GB. Free memory was 1.8 GB in the beginning and 1.8 GB in the end (delta: 12.5 MB). Peak memory consumption was 12.5 MB. Max. memory is 11.5 GB. [2019-10-22 08:55:09,853 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 962.0 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 268.13 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 186.6 MB). Free memory was 944.5 MB in the beginning and 1.2 GB in the end (delta: -237.0 MB). Peak memory consumption was 22.9 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 29.56 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 11.93 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 197.70 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 17.7 MB). Peak memory consumption was 17.7 MB. Max. memory is 11.5 GB. * TraceAbstraction took 19880.43 ms. Allocated memory was 1.2 GB in the beginning and 2.8 GB in the end (delta: 1.6 GB). Free memory was 1.2 GB in the beginning and 1.8 GB in the end (delta: -625.1 MB). Peak memory consumption was 982.8 MB. Max. memory is 11.5 GB. * Witness Printer took 71.59 ms. Allocated memory is still 2.8 GB. Free memory was 1.8 GB in the beginning and 1.8 GB in the end (delta: 12.5 MB). Peak memory consumption was 12.5 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 34]: 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: 25]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 19 locations, 1 error locations. Result: SAFE, OverallTime: 19.7s, OverallIterations: 13, TraceHistogramMax: 141, AutomataDifference: 3.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.6s, HoareTripleCheckerStatistics: 279 SDtfs, 725 SDslu, 1390 SDs, 0 SdLazy, 3145 SolverSat, 1004 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 4363 GetRequests, 4111 SyntacticMatches, 1 SemanticMatches, 251 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2339 ImplicationChecksByTransitivity, 2.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=901occurred in iteration=11, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 13 MinimizatonAttempts, 118 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 5 LocationsWithAnnotation, 776 PreInvPairs, 890 NumberOfFragments, 66 HoareAnnotationTreeSize, 776 FomulaSimplifications, 628 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 5 FomulaSimplificationsInter, 2457 FormulaSimplificationTreeSizeReductionInter, 0.4s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 1.3s SatisfiabilityAnalysisTime, 10.2s InterpolantComputationTime, 6079 NumberOfCodeBlocks, 5686 NumberOfCodeBlocksAsserted, 129 NumberOfCheckSat, 6055 ConstructedInterpolants, 0 QuantifiedInterpolants, 6032751 SizeOfPredicates, 58 NumberOfNonLiveVariables, 5873 ConjunctsInSsa, 337 ConjunctsInUnsatCore, 24 InterpolantComputations, 2 PerfectInterpolantSequences, 191496/218546 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...