./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loops-crafted-1/nested_delay_nd.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/run_dir_efe00843-38f0-469f-800f-0021fb6096f6/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_efe00843-38f0-469f-800f-0021fb6096f6/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_efe00843-38f0-469f-800f-0021fb6096f6/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_efe00843-38f0-469f-800f-0021fb6096f6/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/loops-crafted-1/nested_delay_nd.c -s /tmp/vcloud-vcloud-master/worker/run_dir_efe00843-38f0-469f-800f-0021fb6096f6/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_efe00843-38f0-469f-800f-0021fb6096f6/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 6b6f4e5c37e0d12f37f76e733ff40f1e207ca2c4 ..................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-cad4683 [2019-11-16 00:07:10,946 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-16 00:07:10,947 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-16 00:07:10,964 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-16 00:07:10,965 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-16 00:07:10,966 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-16 00:07:10,968 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-16 00:07:10,978 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-16 00:07:10,979 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-16 00:07:10,980 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-16 00:07:10,981 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-16 00:07:10,982 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-16 00:07:10,983 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-16 00:07:10,983 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-16 00:07:10,984 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-16 00:07:10,985 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-16 00:07:10,986 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-16 00:07:10,987 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-16 00:07:10,988 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-16 00:07:10,996 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-16 00:07:11,000 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-16 00:07:11,003 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-16 00:07:11,006 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-16 00:07:11,007 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-16 00:07:11,012 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-16 00:07:11,012 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-16 00:07:11,013 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-16 00:07:11,016 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-16 00:07:11,017 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-16 00:07:11,018 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-16 00:07:11,018 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-16 00:07:11,019 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-16 00:07:11,020 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-16 00:07:11,020 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-16 00:07:11,022 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-16 00:07:11,022 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-16 00:07:11,023 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-16 00:07:11,023 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-16 00:07:11,023 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-16 00:07:11,024 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-16 00:07:11,025 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-16 00:07:11,026 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_efe00843-38f0-469f-800f-0021fb6096f6/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-16 00:07:11,055 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-16 00:07:11,055 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-16 00:07:11,056 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-16 00:07:11,057 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-16 00:07:11,057 INFO L138 SettingsManager]: * Use SBE=true [2019-11-16 00:07:11,057 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-16 00:07:11,057 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-16 00:07:11,057 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-16 00:07:11,058 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-16 00:07:11,058 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-16 00:07:11,058 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-16 00:07:11,058 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-16 00:07:11,059 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-16 00:07:11,059 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-16 00:07:11,059 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-16 00:07:11,059 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-16 00:07:11,059 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-16 00:07:11,060 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-16 00:07:11,060 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-16 00:07:11,060 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-16 00:07:11,060 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-16 00:07:11,061 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-16 00:07:11,061 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-16 00:07:11,061 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-16 00:07:11,061 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-16 00:07:11,062 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-16 00:07:11,062 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-16 00:07:11,062 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-16 00:07:11,062 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_efe00843-38f0-469f-800f-0021fb6096f6/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 -> 6b6f4e5c37e0d12f37f76e733ff40f1e207ca2c4 [2019-11-16 00:07:11,108 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-16 00:07:11,125 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-16 00:07:11,131 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-16 00:07:11,132 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-16 00:07:11,133 INFO L275 PluginConnector]: CDTParser initialized [2019-11-16 00:07:11,134 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_efe00843-38f0-469f-800f-0021fb6096f6/bin/uautomizer/../../sv-benchmarks/c/loops-crafted-1/nested_delay_nd.c [2019-11-16 00:07:11,206 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_efe00843-38f0-469f-800f-0021fb6096f6/bin/uautomizer/data/7e95e6462/7697f92d1f574338891f781afbd14cd3/FLAG6094af160 [2019-11-16 00:07:11,585 INFO L306 CDTParser]: Found 1 translation units. [2019-11-16 00:07:11,586 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_efe00843-38f0-469f-800f-0021fb6096f6/sv-benchmarks/c/loops-crafted-1/nested_delay_nd.c [2019-11-16 00:07:11,593 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_efe00843-38f0-469f-800f-0021fb6096f6/bin/uautomizer/data/7e95e6462/7697f92d1f574338891f781afbd14cd3/FLAG6094af160 [2019-11-16 00:07:11,931 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_efe00843-38f0-469f-800f-0021fb6096f6/bin/uautomizer/data/7e95e6462/7697f92d1f574338891f781afbd14cd3 [2019-11-16 00:07:11,937 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-16 00:07:11,939 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-16 00:07:11,940 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-16 00:07:11,940 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-16 00:07:11,953 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-16 00:07:11,954 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:07:11" (1/1) ... [2019-11-16 00:07:11,957 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@295e67 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:07:11, skipping insertion in model container [2019-11-16 00:07:11,958 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:07:11" (1/1) ... [2019-11-16 00:07:11,965 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-16 00:07:11,986 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-16 00:07:12,190 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-16 00:07:12,197 INFO L188 MainTranslator]: Completed pre-run [2019-11-16 00:07:12,304 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-16 00:07:12,322 INFO L192 MainTranslator]: Completed translation [2019-11-16 00:07:12,323 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:07:12 WrapperNode [2019-11-16 00:07:12,323 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-16 00:07:12,325 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-16 00:07:12,325 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-16 00:07:12,325 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-16 00:07:12,334 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:07:12" (1/1) ... [2019-11-16 00:07:12,340 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:07:12" (1/1) ... [2019-11-16 00:07:12,365 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-16 00:07:12,367 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-16 00:07:12,367 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-16 00:07:12,368 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-16 00:07:12,375 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:07:12" (1/1) ... [2019-11-16 00:07:12,375 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:07:12" (1/1) ... [2019-11-16 00:07:12,376 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:07:12" (1/1) ... [2019-11-16 00:07:12,376 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:07:12" (1/1) ... [2019-11-16 00:07:12,379 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:07:12" (1/1) ... [2019-11-16 00:07:12,384 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:07:12" (1/1) ... [2019-11-16 00:07:12,385 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:07:12" (1/1) ... [2019-11-16 00:07:12,387 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-16 00:07:12,387 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-16 00:07:12,387 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-16 00:07:12,387 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-16 00:07:12,388 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:07:12" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_efe00843-38f0-469f-800f-0021fb6096f6/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-16 00:07:12,450 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-16 00:07:12,450 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-16 00:07:12,659 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-16 00:07:12,659 INFO L284 CfgBuilder]: Removed 8 assume(true) statements. [2019-11-16 00:07:12,660 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:07:12 BoogieIcfgContainer [2019-11-16 00:07:12,660 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-16 00:07:12,661 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-16 00:07:12,661 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-16 00:07:12,664 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-16 00:07:12,664 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 12:07:11" (1/3) ... [2019-11-16 00:07:12,665 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18178879 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 12:07:12, skipping insertion in model container [2019-11-16 00:07:12,665 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:07:12" (2/3) ... [2019-11-16 00:07:12,666 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18178879 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 12:07:12, skipping insertion in model container [2019-11-16 00:07:12,666 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:07:12" (3/3) ... [2019-11-16 00:07:12,667 INFO L109 eAbstractionObserver]: Analyzing ICFG nested_delay_nd.c [2019-11-16 00:07:12,693 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-16 00:07:12,700 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-16 00:07:12,711 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-16 00:07:12,733 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-16 00:07:12,733 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-16 00:07:12,734 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-16 00:07:12,734 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-16 00:07:12,734 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-16 00:07:12,734 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-16 00:07:12,734 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-16 00:07:12,734 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-16 00:07:12,749 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states. [2019-11-16 00:07:12,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-11-16 00:07:12,755 INFO L372 BasicCegarLoop]: Found error trace [2019-11-16 00:07:12,755 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-16 00:07:12,757 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-16 00:07:12,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-16 00:07:12,763 INFO L82 PathProgramCache]: Analyzing trace with hash -265415979, now seen corresponding path program 1 times [2019-11-16 00:07:12,771 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-16 00:07:12,771 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [354827445] [2019-11-16 00:07:12,772 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:07:12,772 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:07:12,772 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-16 00:07:12,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:07:12,927 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-16 00:07:12,927 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [354827445] [2019-11-16 00:07:12,928 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-16 00:07:12,928 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-16 00:07:12,929 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1631670272] [2019-11-16 00:07:12,933 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-16 00:07:12,933 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-16 00:07:12,943 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-16 00:07:12,944 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-16 00:07:12,945 INFO L87 Difference]: Start difference. First operand 18 states. Second operand 4 states. [2019-11-16 00:07:13,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-16 00:07:13,057 INFO L93 Difference]: Finished difference Result 34 states and 58 transitions. [2019-11-16 00:07:13,059 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-16 00:07:13,060 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2019-11-16 00:07:13,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-16 00:07:13,067 INFO L225 Difference]: With dead ends: 34 [2019-11-16 00:07:13,067 INFO L226 Difference]: Without dead ends: 18 [2019-11-16 00:07:13,070 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-16 00:07:13,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2019-11-16 00:07:13,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 15. [2019-11-16 00:07:13,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2019-11-16 00:07:13,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 21 transitions. [2019-11-16 00:07:13,100 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 21 transitions. Word has length 10 [2019-11-16 00:07:13,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-16 00:07:13,100 INFO L462 AbstractCegarLoop]: Abstraction has 15 states and 21 transitions. [2019-11-16 00:07:13,100 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-16 00:07:13,101 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 21 transitions. [2019-11-16 00:07:13,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-11-16 00:07:13,101 INFO L372 BasicCegarLoop]: Found error trace [2019-11-16 00:07:13,101 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-16 00:07:13,102 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-16 00:07:13,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-16 00:07:13,102 INFO L82 PathProgramCache]: Analyzing trace with hash 2136724782, now seen corresponding path program 1 times [2019-11-16 00:07:13,102 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-16 00:07:13,103 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2137646983] [2019-11-16 00:07:13,103 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:07:13,103 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:07:13,103 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-16 00:07:13,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:07:13,151 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-16 00:07:13,152 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2137646983] [2019-11-16 00:07:13,152 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-16 00:07:13,152 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-16 00:07:13,152 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1767634868] [2019-11-16 00:07:13,154 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-16 00:07:13,154 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-16 00:07:13,154 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-16 00:07:13,155 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-16 00:07:13,155 INFO L87 Difference]: Start difference. First operand 15 states and 21 transitions. Second operand 4 states. [2019-11-16 00:07:13,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-16 00:07:13,227 INFO L93 Difference]: Finished difference Result 31 states and 44 transitions. [2019-11-16 00:07:13,228 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-16 00:07:13,228 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2019-11-16 00:07:13,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-16 00:07:13,229 INFO L225 Difference]: With dead ends: 31 [2019-11-16 00:07:13,229 INFO L226 Difference]: Without dead ends: 18 [2019-11-16 00:07:13,230 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-16 00:07:13,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2019-11-16 00:07:13,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 16. [2019-11-16 00:07:13,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2019-11-16 00:07:13,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 22 transitions. [2019-11-16 00:07:13,237 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 22 transitions. Word has length 13 [2019-11-16 00:07:13,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-16 00:07:13,238 INFO L462 AbstractCegarLoop]: Abstraction has 16 states and 22 transitions. [2019-11-16 00:07:13,238 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-16 00:07:13,238 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 22 transitions. [2019-11-16 00:07:13,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-11-16 00:07:13,239 INFO L372 BasicCegarLoop]: Found error trace [2019-11-16 00:07:13,239 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-16 00:07:13,239 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-16 00:07:13,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-16 00:07:13,239 INFO L82 PathProgramCache]: Analyzing trace with hash -1478184144, now seen corresponding path program 1 times [2019-11-16 00:07:13,240 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-16 00:07:13,240 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1696163830] [2019-11-16 00:07:13,240 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:07:13,240 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:07:13,240 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-16 00:07:13,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:07:13,304 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-16 00:07:13,305 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1696163830] [2019-11-16 00:07:13,305 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-16 00:07:13,305 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-16 00:07:13,305 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [562268133] [2019-11-16 00:07:13,306 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-16 00:07:13,306 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-16 00:07:13,306 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-16 00:07:13,307 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-16 00:07:13,307 INFO L87 Difference]: Start difference. First operand 16 states and 22 transitions. Second operand 3 states. [2019-11-16 00:07:13,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-16 00:07:13,348 INFO L93 Difference]: Finished difference Result 42 states and 60 transitions. [2019-11-16 00:07:13,349 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-16 00:07:13,349 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 13 [2019-11-16 00:07:13,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-16 00:07:13,350 INFO L225 Difference]: With dead ends: 42 [2019-11-16 00:07:13,350 INFO L226 Difference]: Without dead ends: 28 [2019-11-16 00:07:13,351 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-16 00:07:13,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2019-11-16 00:07:13,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 21. [2019-11-16 00:07:13,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2019-11-16 00:07:13,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 29 transitions. [2019-11-16 00:07:13,356 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 29 transitions. Word has length 13 [2019-11-16 00:07:13,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-16 00:07:13,356 INFO L462 AbstractCegarLoop]: Abstraction has 21 states and 29 transitions. [2019-11-16 00:07:13,356 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-16 00:07:13,357 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 29 transitions. [2019-11-16 00:07:13,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-11-16 00:07:13,357 INFO L372 BasicCegarLoop]: Found error trace [2019-11-16 00:07:13,357 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-16 00:07:13,358 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-16 00:07:13,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-16 00:07:13,358 INFO L82 PathProgramCache]: Analyzing trace with hash -1047433017, now seen corresponding path program 1 times [2019-11-16 00:07:13,358 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-16 00:07:13,358 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [123909820] [2019-11-16 00:07:13,358 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:07:13,359 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:07:13,359 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-16 00:07:13,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:07:13,470 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-16 00:07:13,470 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [123909820] [2019-11-16 00:07:13,471 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1842067714] [2019-11-16 00:07:13,471 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_efe00843-38f0-469f-800f-0021fb6096f6/bin/uautomizer/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-16 00:07:13,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:07:13,513 INFO L256 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-16 00:07:13,520 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-16 00:07:13,576 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-16 00:07:13,576 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-16 00:07:13,576 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 4] total 9 [2019-11-16 00:07:13,577 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1900384778] [2019-11-16 00:07:13,577 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-11-16 00:07:13,577 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-16 00:07:13,578 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-11-16 00:07:13,578 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2019-11-16 00:07:13,578 INFO L87 Difference]: Start difference. First operand 21 states and 29 transitions. Second operand 10 states. [2019-11-16 00:07:13,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-16 00:07:13,799 INFO L93 Difference]: Finished difference Result 70 states and 98 transitions. [2019-11-16 00:07:13,800 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-16 00:07:13,800 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 14 [2019-11-16 00:07:13,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-16 00:07:13,802 INFO L225 Difference]: With dead ends: 70 [2019-11-16 00:07:13,802 INFO L226 Difference]: Without dead ends: 51 [2019-11-16 00:07:13,803 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2019-11-16 00:07:13,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2019-11-16 00:07:13,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 23. [2019-11-16 00:07:13,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2019-11-16 00:07:13,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 31 transitions. [2019-11-16 00:07:13,810 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 31 transitions. Word has length 14 [2019-11-16 00:07:13,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-16 00:07:13,810 INFO L462 AbstractCegarLoop]: Abstraction has 23 states and 31 transitions. [2019-11-16 00:07:13,810 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-11-16 00:07:13,811 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 31 transitions. [2019-11-16 00:07:13,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-11-16 00:07:13,811 INFO L372 BasicCegarLoop]: Found error trace [2019-11-16 00:07:13,811 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-16 00:07:14,017 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-16 00:07:14,018 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-16 00:07:14,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-16 00:07:14,018 INFO L82 PathProgramCache]: Analyzing trace with hash 1825215219, now seen corresponding path program 1 times [2019-11-16 00:07:14,018 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-16 00:07:14,019 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [86518100] [2019-11-16 00:07:14,019 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:07:14,019 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:07:14,019 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-16 00:07:14,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:07:14,050 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-11-16 00:07:14,051 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [86518100] [2019-11-16 00:07:14,051 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-16 00:07:14,051 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-16 00:07:14,051 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [364949036] [2019-11-16 00:07:14,052 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-16 00:07:14,052 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-16 00:07:14,052 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-16 00:07:14,052 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-16 00:07:14,053 INFO L87 Difference]: Start difference. First operand 23 states and 31 transitions. Second operand 3 states. [2019-11-16 00:07:14,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-16 00:07:14,090 INFO L93 Difference]: Finished difference Result 52 states and 71 transitions. [2019-11-16 00:07:14,090 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-16 00:07:14,091 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 16 [2019-11-16 00:07:14,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-16 00:07:14,091 INFO L225 Difference]: With dead ends: 52 [2019-11-16 00:07:14,091 INFO L226 Difference]: Without dead ends: 31 [2019-11-16 00:07:14,092 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-16 00:07:14,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2019-11-16 00:07:14,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 23. [2019-11-16 00:07:14,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2019-11-16 00:07:14,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 31 transitions. [2019-11-16 00:07:14,097 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 31 transitions. Word has length 16 [2019-11-16 00:07:14,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-16 00:07:14,097 INFO L462 AbstractCegarLoop]: Abstraction has 23 states and 31 transitions. [2019-11-16 00:07:14,097 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-16 00:07:14,098 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 31 transitions. [2019-11-16 00:07:14,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-11-16 00:07:14,100 INFO L372 BasicCegarLoop]: Found error trace [2019-11-16 00:07:14,100 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-16 00:07:14,101 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-16 00:07:14,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-16 00:07:14,101 INFO L82 PathProgramCache]: Analyzing trace with hash 1882473521, now seen corresponding path program 1 times [2019-11-16 00:07:14,101 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-16 00:07:14,102 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2101478048] [2019-11-16 00:07:14,102 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:07:14,102 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:07:14,102 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-16 00:07:14,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:07:14,177 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-11-16 00:07:14,177 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2101478048] [2019-11-16 00:07:14,177 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-16 00:07:14,177 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-16 00:07:14,178 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [768137493] [2019-11-16 00:07:14,178 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-16 00:07:14,178 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-16 00:07:14,178 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-16 00:07:14,179 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-16 00:07:14,179 INFO L87 Difference]: Start difference. First operand 23 states and 31 transitions. Second operand 4 states. [2019-11-16 00:07:14,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-16 00:07:14,222 INFO L93 Difference]: Finished difference Result 65 states and 89 transitions. [2019-11-16 00:07:14,223 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-16 00:07:14,223 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 16 [2019-11-16 00:07:14,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-16 00:07:14,224 INFO L225 Difference]: With dead ends: 65 [2019-11-16 00:07:14,224 INFO L226 Difference]: Without dead ends: 44 [2019-11-16 00:07:14,224 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-16 00:07:14,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2019-11-16 00:07:14,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 42. [2019-11-16 00:07:14,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2019-11-16 00:07:14,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 58 transitions. [2019-11-16 00:07:14,233 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 58 transitions. Word has length 16 [2019-11-16 00:07:14,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-16 00:07:14,234 INFO L462 AbstractCegarLoop]: Abstraction has 42 states and 58 transitions. [2019-11-16 00:07:14,241 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-16 00:07:14,241 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 58 transitions. [2019-11-16 00:07:14,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-11-16 00:07:14,242 INFO L372 BasicCegarLoop]: Found error trace [2019-11-16 00:07:14,242 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-16 00:07:14,242 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-16 00:07:14,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-16 00:07:14,243 INFO L82 PathProgramCache]: Analyzing trace with hash 1882533103, now seen corresponding path program 1 times [2019-11-16 00:07:14,243 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-16 00:07:14,243 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1953246409] [2019-11-16 00:07:14,243 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:07:14,243 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:07:14,244 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-16 00:07:14,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:07:14,322 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-16 00:07:14,323 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1953246409] [2019-11-16 00:07:14,323 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1323433068] [2019-11-16 00:07:14,323 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_efe00843-38f0-469f-800f-0021fb6096f6/bin/uautomizer/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-16 00:07:14,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:07:14,362 INFO L256 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 5 conjunts are in the unsatisfiable core [2019-11-16 00:07:14,364 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-16 00:07:14,411 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-16 00:07:14,412 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-16 00:07:14,412 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 9 [2019-11-16 00:07:14,412 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [781878283] [2019-11-16 00:07:14,412 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-11-16 00:07:14,413 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-16 00:07:14,413 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-11-16 00:07:14,413 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2019-11-16 00:07:14,413 INFO L87 Difference]: Start difference. First operand 42 states and 58 transitions. Second operand 10 states. [2019-11-16 00:07:14,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-16 00:07:14,770 INFO L93 Difference]: Finished difference Result 161 states and 229 transitions. [2019-11-16 00:07:14,772 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-11-16 00:07:14,772 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 16 [2019-11-16 00:07:14,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-16 00:07:14,773 INFO L225 Difference]: With dead ends: 161 [2019-11-16 00:07:14,773 INFO L226 Difference]: Without dead ends: 121 [2019-11-16 00:07:14,774 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=121, Invalid=259, Unknown=0, NotChecked=0, Total=380 [2019-11-16 00:07:14,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2019-11-16 00:07:14,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 82. [2019-11-16 00:07:14,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2019-11-16 00:07:14,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 111 transitions. [2019-11-16 00:07:14,801 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 111 transitions. Word has length 16 [2019-11-16 00:07:14,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-16 00:07:14,802 INFO L462 AbstractCegarLoop]: Abstraction has 82 states and 111 transitions. [2019-11-16 00:07:14,802 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-11-16 00:07:14,802 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 111 transitions. [2019-11-16 00:07:14,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2019-11-16 00:07:14,804 INFO L372 BasicCegarLoop]: Found error trace [2019-11-16 00:07:14,804 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-16 00:07:15,015 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-16 00:07:15,015 INFO L410 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-16 00:07:15,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-16 00:07:15,015 INFO L82 PathProgramCache]: Analyzing trace with hash -1169498870, now seen corresponding path program 2 times [2019-11-16 00:07:15,016 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-16 00:07:15,016 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [658384144] [2019-11-16 00:07:15,016 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:07:15,016 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:07:15,016 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-16 00:07:15,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:07:15,091 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-16 00:07:15,091 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [658384144] [2019-11-16 00:07:15,092 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1669083722] [2019-11-16 00:07:15,092 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_efe00843-38f0-469f-800f-0021fb6096f6/bin/uautomizer/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-16 00:07:15,124 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-11-16 00:07:15,124 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-16 00:07:15,125 INFO L256 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 7 conjunts are in the unsatisfiable core [2019-11-16 00:07:15,127 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-16 00:07:15,200 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-16 00:07:15,201 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-16 00:07:15,201 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2019-11-16 00:07:15,201 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2116123355] [2019-11-16 00:07:15,201 INFO L442 AbstractCegarLoop]: Interpolant automaton has 13 states [2019-11-16 00:07:15,202 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-16 00:07:15,202 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2019-11-16 00:07:15,202 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2019-11-16 00:07:15,202 INFO L87 Difference]: Start difference. First operand 82 states and 111 transitions. Second operand 13 states. [2019-11-16 00:07:15,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-16 00:07:15,414 INFO L93 Difference]: Finished difference Result 221 states and 305 transitions. [2019-11-16 00:07:15,416 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-11-16 00:07:15,417 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 19 [2019-11-16 00:07:15,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-16 00:07:15,418 INFO L225 Difference]: With dead ends: 221 [2019-11-16 00:07:15,419 INFO L226 Difference]: Without dead ends: 141 [2019-11-16 00:07:15,419 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=194, Unknown=0, NotChecked=0, Total=272 [2019-11-16 00:07:15,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2019-11-16 00:07:15,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 84. [2019-11-16 00:07:15,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2019-11-16 00:07:15,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 115 transitions. [2019-11-16 00:07:15,444 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 115 transitions. Word has length 19 [2019-11-16 00:07:15,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-16 00:07:15,444 INFO L462 AbstractCegarLoop]: Abstraction has 84 states and 115 transitions. [2019-11-16 00:07:15,444 INFO L463 AbstractCegarLoop]: Interpolant automaton has 13 states. [2019-11-16 00:07:15,445 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 115 transitions. [2019-11-16 00:07:15,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2019-11-16 00:07:15,446 INFO L372 BasicCegarLoop]: Found error trace [2019-11-16 00:07:15,446 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-16 00:07:15,653 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-16 00:07:15,653 INFO L410 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-16 00:07:15,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-16 00:07:15,653 INFO L82 PathProgramCache]: Analyzing trace with hash -1258172505, now seen corresponding path program 1 times [2019-11-16 00:07:15,654 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-16 00:07:15,654 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1078380656] [2019-11-16 00:07:15,654 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:07:15,654 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:07:15,654 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-16 00:07:15,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:07:15,692 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2019-11-16 00:07:15,693 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1078380656] [2019-11-16 00:07:15,693 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-16 00:07:15,693 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-16 00:07:15,693 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1422575153] [2019-11-16 00:07:15,694 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-16 00:07:15,694 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-16 00:07:15,694 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-16 00:07:15,694 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-16 00:07:15,694 INFO L87 Difference]: Start difference. First operand 84 states and 115 transitions. Second operand 4 states. [2019-11-16 00:07:15,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-16 00:07:15,730 INFO L93 Difference]: Finished difference Result 146 states and 199 transitions. [2019-11-16 00:07:15,730 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-16 00:07:15,730 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 20 [2019-11-16 00:07:15,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-16 00:07:15,732 INFO L225 Difference]: With dead ends: 146 [2019-11-16 00:07:15,732 INFO L226 Difference]: Without dead ends: 104 [2019-11-16 00:07:15,735 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-16 00:07:15,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2019-11-16 00:07:15,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 88. [2019-11-16 00:07:15,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2019-11-16 00:07:15,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 117 transitions. [2019-11-16 00:07:15,757 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 117 transitions. Word has length 20 [2019-11-16 00:07:15,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-16 00:07:15,757 INFO L462 AbstractCegarLoop]: Abstraction has 88 states and 117 transitions. [2019-11-16 00:07:15,757 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-16 00:07:15,757 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 117 transitions. [2019-11-16 00:07:15,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2019-11-16 00:07:15,763 INFO L372 BasicCegarLoop]: Found error trace [2019-11-16 00:07:15,764 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-16 00:07:15,764 INFO L410 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-16 00:07:15,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-16 00:07:15,764 INFO L82 PathProgramCache]: Analyzing trace with hash -1256265881, now seen corresponding path program 1 times [2019-11-16 00:07:15,772 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-16 00:07:15,772 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [835759457] [2019-11-16 00:07:15,772 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:07:15,774 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:07:15,775 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-16 00:07:15,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:07:15,821 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-16 00:07:15,821 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [835759457] [2019-11-16 00:07:15,821 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1843097423] [2019-11-16 00:07:15,821 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_efe00843-38f0-469f-800f-0021fb6096f6/bin/uautomizer/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-16 00:07:15,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:07:15,858 INFO L256 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-16 00:07:15,859 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-16 00:07:15,916 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-16 00:07:15,916 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-16 00:07:15,916 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2019-11-16 00:07:15,917 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1722800234] [2019-11-16 00:07:15,917 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-11-16 00:07:15,917 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-16 00:07:15,917 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-11-16 00:07:15,917 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2019-11-16 00:07:15,918 INFO L87 Difference]: Start difference. First operand 88 states and 117 transitions. Second operand 11 states. [2019-11-16 00:07:16,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-16 00:07:16,025 INFO L93 Difference]: Finished difference Result 205 states and 273 transitions. [2019-11-16 00:07:16,026 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-16 00:07:16,026 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 20 [2019-11-16 00:07:16,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-16 00:07:16,027 INFO L225 Difference]: With dead ends: 205 [2019-11-16 00:07:16,027 INFO L226 Difference]: Without dead ends: 119 [2019-11-16 00:07:16,028 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2019-11-16 00:07:16,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2019-11-16 00:07:16,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 98. [2019-11-16 00:07:16,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2019-11-16 00:07:16,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 129 transitions. [2019-11-16 00:07:16,048 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 129 transitions. Word has length 20 [2019-11-16 00:07:16,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-16 00:07:16,050 INFO L462 AbstractCegarLoop]: Abstraction has 98 states and 129 transitions. [2019-11-16 00:07:16,050 INFO L463 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-11-16 00:07:16,050 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 129 transitions. [2019-11-16 00:07:16,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2019-11-16 00:07:16,051 INFO L372 BasicCegarLoop]: Found error trace [2019-11-16 00:07:16,051 INFO L380 BasicCegarLoop]: trace histogram [4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-16 00:07:16,257 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-16 00:07:16,257 INFO L410 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-16 00:07:16,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-16 00:07:16,258 INFO L82 PathProgramCache]: Analyzing trace with hash 203649807, now seen corresponding path program 3 times [2019-11-16 00:07:16,258 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-16 00:07:16,258 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [869864867] [2019-11-16 00:07:16,258 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:07:16,258 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:07:16,258 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-16 00:07:16,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:07:16,337 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-16 00:07:16,338 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [869864867] [2019-11-16 00:07:16,338 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [17064904] [2019-11-16 00:07:16,338 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_efe00843-38f0-469f-800f-0021fb6096f6/bin/uautomizer/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-16 00:07:16,378 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2019-11-16 00:07:16,378 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-16 00:07:16,379 INFO L256 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-16 00:07:16,381 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-16 00:07:16,423 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2019-11-16 00:07:16,424 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-11-16 00:07:16,424 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8] total 11 [2019-11-16 00:07:16,424 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1291427316] [2019-11-16 00:07:16,424 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-16 00:07:16,425 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-16 00:07:16,425 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-16 00:07:16,425 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2019-11-16 00:07:16,425 INFO L87 Difference]: Start difference. First operand 98 states and 129 transitions. Second operand 4 states. [2019-11-16 00:07:16,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-16 00:07:16,468 INFO L93 Difference]: Finished difference Result 222 states and 290 transitions. [2019-11-16 00:07:16,471 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-16 00:07:16,471 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 22 [2019-11-16 00:07:16,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-16 00:07:16,472 INFO L225 Difference]: With dead ends: 222 [2019-11-16 00:07:16,472 INFO L226 Difference]: Without dead ends: 126 [2019-11-16 00:07:16,473 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2019-11-16 00:07:16,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2019-11-16 00:07:16,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 108. [2019-11-16 00:07:16,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108 states. [2019-11-16 00:07:16,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 135 transitions. [2019-11-16 00:07:16,485 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 135 transitions. Word has length 22 [2019-11-16 00:07:16,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-16 00:07:16,485 INFO L462 AbstractCegarLoop]: Abstraction has 108 states and 135 transitions. [2019-11-16 00:07:16,485 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-16 00:07:16,485 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 135 transitions. [2019-11-16 00:07:16,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2019-11-16 00:07:16,486 INFO L372 BasicCegarLoop]: Found error trace [2019-11-16 00:07:16,486 INFO L380 BasicCegarLoop]: trace histogram [4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-16 00:07:16,689 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-16 00:07:16,689 INFO L410 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-16 00:07:16,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-16 00:07:16,690 INFO L82 PathProgramCache]: Analyzing trace with hash -617261500, now seen corresponding path program 2 times [2019-11-16 00:07:16,690 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-16 00:07:16,690 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [663089997] [2019-11-16 00:07:16,690 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:07:16,690 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:07:16,690 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-16 00:07:16,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:07:16,741 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-16 00:07:16,742 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [663089997] [2019-11-16 00:07:16,742 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1877418311] [2019-11-16 00:07:16,742 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_efe00843-38f0-469f-800f-0021fb6096f6/bin/uautomizer/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-16 00:07:16,771 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-11-16 00:07:16,771 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-16 00:07:16,772 INFO L256 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 7 conjunts are in the unsatisfiable core [2019-11-16 00:07:16,773 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-16 00:07:16,820 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-16 00:07:16,820 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-16 00:07:16,820 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2019-11-16 00:07:16,820 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1049812780] [2019-11-16 00:07:16,821 INFO L442 AbstractCegarLoop]: Interpolant automaton has 13 states [2019-11-16 00:07:16,821 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-16 00:07:16,821 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2019-11-16 00:07:16,821 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=93, Unknown=0, NotChecked=0, Total=156 [2019-11-16 00:07:16,822 INFO L87 Difference]: Start difference. First operand 108 states and 135 transitions. Second operand 13 states. [2019-11-16 00:07:16,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-16 00:07:16,954 INFO L93 Difference]: Finished difference Result 257 states and 325 transitions. [2019-11-16 00:07:16,955 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-16 00:07:16,955 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 23 [2019-11-16 00:07:16,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-16 00:07:16,956 INFO L225 Difference]: With dead ends: 257 [2019-11-16 00:07:16,956 INFO L226 Difference]: Without dead ends: 151 [2019-11-16 00:07:16,957 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=63, Invalid=93, Unknown=0, NotChecked=0, Total=156 [2019-11-16 00:07:16,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2019-11-16 00:07:16,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 130. [2019-11-16 00:07:16,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130 states. [2019-11-16 00:07:16,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 161 transitions. [2019-11-16 00:07:16,970 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 161 transitions. Word has length 23 [2019-11-16 00:07:16,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-16 00:07:16,971 INFO L462 AbstractCegarLoop]: Abstraction has 130 states and 161 transitions. [2019-11-16 00:07:16,971 INFO L463 AbstractCegarLoop]: Interpolant automaton has 13 states. [2019-11-16 00:07:16,971 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 161 transitions. [2019-11-16 00:07:16,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2019-11-16 00:07:16,974 INFO L372 BasicCegarLoop]: Found error trace [2019-11-16 00:07:16,974 INFO L380 BasicCegarLoop]: trace histogram [5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-16 00:07:17,177 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-16 00:07:17,177 INFO L410 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-16 00:07:17,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-16 00:07:17,177 INFO L82 PathProgramCache]: Analyzing trace with hash 667196999, now seen corresponding path program 3 times [2019-11-16 00:07:17,178 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-16 00:07:17,178 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [637992143] [2019-11-16 00:07:17,178 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:07:17,178 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:07:17,178 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-16 00:07:17,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:07:17,268 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-16 00:07:17,268 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [637992143] [2019-11-16 00:07:17,268 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1080752874] [2019-11-16 00:07:17,269 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_efe00843-38f0-469f-800f-0021fb6096f6/bin/uautomizer/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-16 00:07:17,312 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2019-11-16 00:07:17,312 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-16 00:07:17,313 INFO L256 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 17 conjunts are in the unsatisfiable core [2019-11-16 00:07:17,317 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-16 00:07:17,441 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-16 00:07:17,471 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2019-11-16 00:07:17,471 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-11-16 00:07:17,471 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8] total 15 [2019-11-16 00:07:17,471 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1147625535] [2019-11-16 00:07:17,472 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-16 00:07:17,472 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-16 00:07:17,472 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-16 00:07:17,472 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2019-11-16 00:07:17,473 INFO L87 Difference]: Start difference. First operand 130 states and 161 transitions. Second operand 8 states. [2019-11-16 00:07:17,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-16 00:07:17,583 INFO L93 Difference]: Finished difference Result 290 states and 357 transitions. [2019-11-16 00:07:17,583 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-11-16 00:07:17,583 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 26 [2019-11-16 00:07:17,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-16 00:07:17,585 INFO L225 Difference]: With dead ends: 290 [2019-11-16 00:07:17,585 INFO L226 Difference]: Without dead ends: 288 [2019-11-16 00:07:17,586 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=51, Invalid=189, Unknown=0, NotChecked=0, Total=240 [2019-11-16 00:07:17,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 288 states. [2019-11-16 00:07:17,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 288 to 181. [2019-11-16 00:07:17,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 181 states. [2019-11-16 00:07:17,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 222 transitions. [2019-11-16 00:07:17,602 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 222 transitions. Word has length 26 [2019-11-16 00:07:17,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-16 00:07:17,602 INFO L462 AbstractCegarLoop]: Abstraction has 181 states and 222 transitions. [2019-11-16 00:07:17,602 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-16 00:07:17,602 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 222 transitions. [2019-11-16 00:07:17,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2019-11-16 00:07:17,603 INFO L372 BasicCegarLoop]: Found error trace [2019-11-16 00:07:17,603 INFO L380 BasicCegarLoop]: trace histogram [5, 5, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-16 00:07:17,813 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-16 00:07:17,813 INFO L410 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-16 00:07:17,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-16 00:07:17,813 INFO L82 PathProgramCache]: Analyzing trace with hash 477144837, now seen corresponding path program 1 times [2019-11-16 00:07:17,814 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-16 00:07:17,814 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1971125945] [2019-11-16 00:07:17,814 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:07:17,814 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:07:17,814 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-16 00:07:17,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:07:17,882 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-11-16 00:07:17,882 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1971125945] [2019-11-16 00:07:17,882 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [4766961] [2019-11-16 00:07:17,882 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_efe00843-38f0-469f-800f-0021fb6096f6/bin/uautomizer/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-16 00:07:17,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:07:17,933 INFO L256 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 8 conjunts are in the unsatisfiable core [2019-11-16 00:07:17,936 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-16 00:07:18,048 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-16 00:07:18,048 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-16 00:07:18,048 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2019-11-16 00:07:18,048 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1783167460] [2019-11-16 00:07:18,049 INFO L442 AbstractCegarLoop]: Interpolant automaton has 15 states [2019-11-16 00:07:18,049 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-16 00:07:18,049 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2019-11-16 00:07:18,049 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2019-11-16 00:07:18,050 INFO L87 Difference]: Start difference. First operand 181 states and 222 transitions. Second operand 15 states. [2019-11-16 00:07:18,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-16 00:07:18,475 INFO L93 Difference]: Finished difference Result 483 states and 604 transitions. [2019-11-16 00:07:18,476 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2019-11-16 00:07:18,476 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 26 [2019-11-16 00:07:18,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-16 00:07:18,478 INFO L225 Difference]: With dead ends: 483 [2019-11-16 00:07:18,478 INFO L226 Difference]: Without dead ends: 337 [2019-11-16 00:07:18,479 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 178 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=256, Invalid=614, Unknown=0, NotChecked=0, Total=870 [2019-11-16 00:07:18,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 337 states. [2019-11-16 00:07:18,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 337 to 205. [2019-11-16 00:07:18,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 205 states. [2019-11-16 00:07:18,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 251 transitions. [2019-11-16 00:07:18,495 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 251 transitions. Word has length 26 [2019-11-16 00:07:18,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-16 00:07:18,496 INFO L462 AbstractCegarLoop]: Abstraction has 205 states and 251 transitions. [2019-11-16 00:07:18,496 INFO L463 AbstractCegarLoop]: Interpolant automaton has 15 states. [2019-11-16 00:07:18,496 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 251 transitions. [2019-11-16 00:07:18,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2019-11-16 00:07:18,496 INFO L372 BasicCegarLoop]: Found error trace [2019-11-16 00:07:18,497 INFO L380 BasicCegarLoop]: trace histogram [6, 6, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-16 00:07:18,699 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-16 00:07:18,701 INFO L410 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-16 00:07:18,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-16 00:07:18,701 INFO L82 PathProgramCache]: Analyzing trace with hash 2135503200, now seen corresponding path program 2 times [2019-11-16 00:07:18,702 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-16 00:07:18,702 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1826998592] [2019-11-16 00:07:18,702 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:07:18,703 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:07:18,703 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-16 00:07:18,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:07:18,836 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-11-16 00:07:18,837 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1826998592] [2019-11-16 00:07:18,837 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [893704751] [2019-11-16 00:07:18,837 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_efe00843-38f0-469f-800f-0021fb6096f6/bin/uautomizer/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-16 00:07:18,894 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-11-16 00:07:18,894 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-16 00:07:18,895 INFO L256 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 9 conjunts are in the unsatisfiable core [2019-11-16 00:07:18,896 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-16 00:07:19,034 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-11-16 00:07:19,034 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-16 00:07:19,034 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2019-11-16 00:07:19,034 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [122087302] [2019-11-16 00:07:19,035 INFO L442 AbstractCegarLoop]: Interpolant automaton has 17 states [2019-11-16 00:07:19,035 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-16 00:07:19,035 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2019-11-16 00:07:19,035 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=198, Unknown=0, NotChecked=0, Total=272 [2019-11-16 00:07:19,036 INFO L87 Difference]: Start difference. First operand 205 states and 251 transitions. Second operand 17 states. [2019-11-16 00:07:19,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-16 00:07:19,276 INFO L93 Difference]: Finished difference Result 424 states and 525 transitions. [2019-11-16 00:07:19,276 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2019-11-16 00:07:19,276 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 29 [2019-11-16 00:07:19,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-16 00:07:19,278 INFO L225 Difference]: With dead ends: 424 [2019-11-16 00:07:19,278 INFO L226 Difference]: Without dead ends: 278 [2019-11-16 00:07:19,279 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 109 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=146, Invalid=360, Unknown=0, NotChecked=0, Total=506 [2019-11-16 00:07:19,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278 states. [2019-11-16 00:07:19,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278 to 199. [2019-11-16 00:07:19,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 199 states. [2019-11-16 00:07:19,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 245 transitions. [2019-11-16 00:07:19,293 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 245 transitions. Word has length 29 [2019-11-16 00:07:19,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-16 00:07:19,294 INFO L462 AbstractCegarLoop]: Abstraction has 199 states and 245 transitions. [2019-11-16 00:07:19,294 INFO L463 AbstractCegarLoop]: Interpolant automaton has 17 states. [2019-11-16 00:07:19,294 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 245 transitions. [2019-11-16 00:07:19,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2019-11-16 00:07:19,294 INFO L372 BasicCegarLoop]: Found error trace [2019-11-16 00:07:19,295 INFO L380 BasicCegarLoop]: trace histogram [6, 6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-16 00:07:19,498 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-16 00:07:19,498 INFO L410 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-16 00:07:19,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-16 00:07:19,498 INFO L82 PathProgramCache]: Analyzing trace with hash 1548697186, now seen corresponding path program 3 times [2019-11-16 00:07:19,499 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-16 00:07:19,499 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [29264217] [2019-11-16 00:07:19,499 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:07:19,499 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:07:19,499 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-16 00:07:19,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:07:19,592 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-16 00:07:19,592 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [29264217] [2019-11-16 00:07:19,592 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1048053355] [2019-11-16 00:07:19,593 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_efe00843-38f0-469f-800f-0021fb6096f6/bin/uautomizer/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-16 00:07:19,626 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2019-11-16 00:07:19,627 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-16 00:07:19,628 INFO L256 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 20 conjunts are in the unsatisfiable core [2019-11-16 00:07:19,629 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-16 00:07:19,723 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-16 00:07:19,736 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2019-11-16 00:07:19,736 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-11-16 00:07:19,737 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [10] total 17 [2019-11-16 00:07:19,737 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2023372110] [2019-11-16 00:07:19,737 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-16 00:07:19,737 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-16 00:07:19,737 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-16 00:07:19,738 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=221, Unknown=0, NotChecked=0, Total=272 [2019-11-16 00:07:19,738 INFO L87 Difference]: Start difference. First operand 199 states and 245 transitions. Second operand 8 states. [2019-11-16 00:07:19,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-16 00:07:19,921 INFO L93 Difference]: Finished difference Result 258 states and 315 transitions. [2019-11-16 00:07:19,922 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-11-16 00:07:19,922 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 29 [2019-11-16 00:07:19,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-16 00:07:19,924 INFO L225 Difference]: With dead ends: 258 [2019-11-16 00:07:19,924 INFO L226 Difference]: Without dead ends: 256 [2019-11-16 00:07:19,925 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=55, Invalid=251, Unknown=0, NotChecked=0, Total=306 [2019-11-16 00:07:19,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 256 states. [2019-11-16 00:07:19,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 256 to 199. [2019-11-16 00:07:19,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 199 states. [2019-11-16 00:07:19,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 245 transitions. [2019-11-16 00:07:19,943 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 245 transitions. Word has length 29 [2019-11-16 00:07:19,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-16 00:07:19,944 INFO L462 AbstractCegarLoop]: Abstraction has 199 states and 245 transitions. [2019-11-16 00:07:19,944 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-16 00:07:19,944 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 245 transitions. [2019-11-16 00:07:19,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2019-11-16 00:07:19,945 INFO L372 BasicCegarLoop]: Found error trace [2019-11-16 00:07:19,945 INFO L380 BasicCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-16 00:07:20,149 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-16 00:07:20,149 INFO L410 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-16 00:07:20,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-16 00:07:20,150 INFO L82 PathProgramCache]: Analyzing trace with hash -1366196382, now seen corresponding path program 2 times [2019-11-16 00:07:20,150 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-16 00:07:20,150 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [129291942] [2019-11-16 00:07:20,150 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:07:20,150 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:07:20,150 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-16 00:07:20,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:07:20,292 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-16 00:07:20,292 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [129291942] [2019-11-16 00:07:20,292 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1610982765] [2019-11-16 00:07:20,292 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_efe00843-38f0-469f-800f-0021fb6096f6/bin/uautomizer/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-16 00:07:20,323 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2019-11-16 00:07:20,323 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-16 00:07:20,323 INFO L256 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-16 00:07:20,325 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-16 00:07:20,390 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2019-11-16 00:07:20,390 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-11-16 00:07:20,390 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [12] total 14 [2019-11-16 00:07:20,391 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1585187774] [2019-11-16 00:07:20,391 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-16 00:07:20,391 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-16 00:07:20,391 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-16 00:07:20,392 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2019-11-16 00:07:20,392 INFO L87 Difference]: Start difference. First operand 199 states and 245 transitions. Second operand 5 states. [2019-11-16 00:07:20,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-16 00:07:20,449 INFO L93 Difference]: Finished difference Result 345 states and 426 transitions. [2019-11-16 00:07:20,450 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-16 00:07:20,450 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 29 [2019-11-16 00:07:20,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-16 00:07:20,452 INFO L225 Difference]: With dead ends: 345 [2019-11-16 00:07:20,452 INFO L226 Difference]: Without dead ends: 273 [2019-11-16 00:07:20,453 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2019-11-16 00:07:20,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 273 states. [2019-11-16 00:07:20,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 273 to 231. [2019-11-16 00:07:20,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 231 states. [2019-11-16 00:07:20,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 286 transitions. [2019-11-16 00:07:20,472 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 286 transitions. Word has length 29 [2019-11-16 00:07:20,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-16 00:07:20,473 INFO L462 AbstractCegarLoop]: Abstraction has 231 states and 286 transitions. [2019-11-16 00:07:20,473 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-16 00:07:20,474 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 286 transitions. [2019-11-16 00:07:20,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2019-11-16 00:07:20,475 INFO L372 BasicCegarLoop]: Found error trace [2019-11-16 00:07:20,475 INFO L380 BasicCegarLoop]: trace histogram [12, 12, 10, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2019-11-16 00:07:20,679 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-16 00:07:20,679 INFO L410 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-16 00:07:20,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-16 00:07:20,679 INFO L82 PathProgramCache]: Analyzing trace with hash 531419276, now seen corresponding path program 1 times [2019-11-16 00:07:20,680 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-16 00:07:20,680 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1780760881] [2019-11-16 00:07:20,680 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:07:20,680 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:07:20,680 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-16 00:07:20,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:07:20,876 INFO L134 CoverageAnalysis]: Checked inductivity of 230 backedges. 34 proven. 196 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-16 00:07:20,876 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1780760881] [2019-11-16 00:07:20,876 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1710784968] [2019-11-16 00:07:20,876 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_efe00843-38f0-469f-800f-0021fb6096f6/bin/uautomizer/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-16 00:07:20,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:07:20,923 INFO L256 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 9 conjunts are in the unsatisfiable core [2019-11-16 00:07:20,926 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-16 00:07:21,067 INFO L134 CoverageAnalysis]: Checked inductivity of 230 backedges. 122 proven. 51 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2019-11-16 00:07:21,067 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-16 00:07:21,068 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 9] total 25 [2019-11-16 00:07:21,068 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [591192497] [2019-11-16 00:07:21,069 INFO L442 AbstractCegarLoop]: Interpolant automaton has 26 states [2019-11-16 00:07:21,069 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-16 00:07:21,069 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2019-11-16 00:07:21,070 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=519, Unknown=0, NotChecked=0, Total=650 [2019-11-16 00:07:21,070 INFO L87 Difference]: Start difference. First operand 231 states and 286 transitions. Second operand 26 states. [2019-11-16 00:07:21,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-16 00:07:21,602 INFO L93 Difference]: Finished difference Result 551 states and 679 transitions. [2019-11-16 00:07:21,602 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2019-11-16 00:07:21,602 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 55 [2019-11-16 00:07:21,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-16 00:07:21,605 INFO L225 Difference]: With dead ends: 551 [2019-11-16 00:07:21,605 INFO L226 Difference]: Without dead ends: 359 [2019-11-16 00:07:21,606 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 372 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=308, Invalid=1098, Unknown=0, NotChecked=0, Total=1406 [2019-11-16 00:07:21,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 359 states. [2019-11-16 00:07:21,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 359 to 266. [2019-11-16 00:07:21,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 266 states. [2019-11-16 00:07:21,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 327 transitions. [2019-11-16 00:07:21,628 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 327 transitions. Word has length 55 [2019-11-16 00:07:21,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-16 00:07:21,628 INFO L462 AbstractCegarLoop]: Abstraction has 266 states and 327 transitions. [2019-11-16 00:07:21,628 INFO L463 AbstractCegarLoop]: Interpolant automaton has 26 states. [2019-11-16 00:07:21,628 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 327 transitions. [2019-11-16 00:07:21,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2019-11-16 00:07:21,629 INFO L372 BasicCegarLoop]: Found error trace [2019-11-16 00:07:21,630 INFO L380 BasicCegarLoop]: trace histogram [14, 14, 12, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2019-11-16 00:07:21,833 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-16 00:07:21,833 INFO L410 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-16 00:07:21,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-16 00:07:21,834 INFO L82 PathProgramCache]: Analyzing trace with hash -1993539556, now seen corresponding path program 2 times [2019-11-16 00:07:21,834 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-16 00:07:21,834 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2059854184] [2019-11-16 00:07:21,834 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:07:21,834 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:07:21,835 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-16 00:07:21,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:07:22,186 INFO L134 CoverageAnalysis]: Checked inductivity of 309 backedges. 39 proven. 270 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-16 00:07:22,187 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2059854184] [2019-11-16 00:07:22,187 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1341577268] [2019-11-16 00:07:22,187 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_efe00843-38f0-469f-800f-0021fb6096f6/bin/uautomizer/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-16 00:07:22,260 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-11-16 00:07:22,260 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-16 00:07:22,261 INFO L256 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 10 conjunts are in the unsatisfiable core [2019-11-16 00:07:22,267 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-16 00:07:22,511 INFO L134 CoverageAnalysis]: Checked inductivity of 309 backedges. 163 proven. 70 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2019-11-16 00:07:22,511 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-16 00:07:22,511 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 10] total 28 [2019-11-16 00:07:22,512 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1347014648] [2019-11-16 00:07:22,513 INFO L442 AbstractCegarLoop]: Interpolant automaton has 29 states [2019-11-16 00:07:22,513 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-16 00:07:22,514 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2019-11-16 00:07:22,514 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=160, Invalid=652, Unknown=0, NotChecked=0, Total=812 [2019-11-16 00:07:22,515 INFO L87 Difference]: Start difference. First operand 266 states and 327 transitions. Second operand 29 states. [2019-11-16 00:07:23,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-16 00:07:23,109 INFO L93 Difference]: Finished difference Result 644 states and 783 transitions. [2019-11-16 00:07:23,109 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2019-11-16 00:07:23,110 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 61 [2019-11-16 00:07:23,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-16 00:07:23,112 INFO L225 Difference]: With dead ends: 644 [2019-11-16 00:07:23,112 INFO L226 Difference]: Without dead ends: 425 [2019-11-16 00:07:23,114 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 539 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=437, Invalid=1543, Unknown=0, NotChecked=0, Total=1980 [2019-11-16 00:07:23,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 425 states. [2019-11-16 00:07:23,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 425 to 305. [2019-11-16 00:07:23,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 305 states. [2019-11-16 00:07:23,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 305 states to 305 states and 372 transitions. [2019-11-16 00:07:23,137 INFO L78 Accepts]: Start accepts. Automaton has 305 states and 372 transitions. Word has length 61 [2019-11-16 00:07:23,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-16 00:07:23,138 INFO L462 AbstractCegarLoop]: Abstraction has 305 states and 372 transitions. [2019-11-16 00:07:23,138 INFO L463 AbstractCegarLoop]: Interpolant automaton has 29 states. [2019-11-16 00:07:23,138 INFO L276 IsEmpty]: Start isEmpty. Operand 305 states and 372 transitions. [2019-11-16 00:07:23,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2019-11-16 00:07:23,139 INFO L372 BasicCegarLoop]: Found error trace [2019-11-16 00:07:23,139 INFO L380 BasicCegarLoop]: trace histogram [16, 16, 14, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2019-11-16 00:07:23,343 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-16 00:07:23,343 INFO L410 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-16 00:07:23,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-16 00:07:23,343 INFO L82 PathProgramCache]: Analyzing trace with hash 1561582796, now seen corresponding path program 3 times [2019-11-16 00:07:23,343 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-16 00:07:23,343 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1603105008] [2019-11-16 00:07:23,344 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:07:23,344 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:07:23,344 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-16 00:07:23,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:07:23,676 INFO L134 CoverageAnalysis]: Checked inductivity of 400 backedges. 44 proven. 356 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-16 00:07:23,677 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1603105008] [2019-11-16 00:07:23,677 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [908864192] [2019-11-16 00:07:23,677 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_efe00843-38f0-469f-800f-0021fb6096f6/bin/uautomizer/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-16 00:07:23,727 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2019-11-16 00:07:23,727 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-16 00:07:23,728 INFO L256 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 22 conjunts are in the unsatisfiable core [2019-11-16 00:07:23,730 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-16 00:07:23,848 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-16 00:07:23,875 INFO L134 CoverageAnalysis]: Checked inductivity of 400 backedges. 22 proven. 216 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked. [2019-11-16 00:07:23,876 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-16 00:07:23,876 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 9] total 30 [2019-11-16 00:07:23,876 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [343324378] [2019-11-16 00:07:23,876 INFO L442 AbstractCegarLoop]: Interpolant automaton has 30 states [2019-11-16 00:07:23,877 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-16 00:07:23,877 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2019-11-16 00:07:23,877 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=145, Invalid=725, Unknown=0, NotChecked=0, Total=870 [2019-11-16 00:07:23,877 INFO L87 Difference]: Start difference. First operand 305 states and 372 transitions. Second operand 30 states. [2019-11-16 00:07:28,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-16 00:07:28,774 INFO L93 Difference]: Finished difference Result 1614 states and 1904 transitions. [2019-11-16 00:07:28,775 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 143 states. [2019-11-16 00:07:28,775 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 67 [2019-11-16 00:07:28,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-16 00:07:28,783 INFO L225 Difference]: With dead ends: 1614 [2019-11-16 00:07:28,784 INFO L226 Difference]: Without dead ends: 1512 [2019-11-16 00:07:28,793 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 228 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 168 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11671 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=4550, Invalid=24180, Unknown=0, NotChecked=0, Total=28730 [2019-11-16 00:07:28,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1512 states. [2019-11-16 00:07:28,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1512 to 644. [2019-11-16 00:07:28,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 644 states. [2019-11-16 00:07:28,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 644 states to 644 states and 755 transitions. [2019-11-16 00:07:28,853 INFO L78 Accepts]: Start accepts. Automaton has 644 states and 755 transitions. Word has length 67 [2019-11-16 00:07:28,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-16 00:07:28,853 INFO L462 AbstractCegarLoop]: Abstraction has 644 states and 755 transitions. [2019-11-16 00:07:28,853 INFO L463 AbstractCegarLoop]: Interpolant automaton has 30 states. [2019-11-16 00:07:28,854 INFO L276 IsEmpty]: Start isEmpty. Operand 644 states and 755 transitions. [2019-11-16 00:07:28,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2019-11-16 00:07:28,854 INFO L372 BasicCegarLoop]: Found error trace [2019-11-16 00:07:28,854 INFO L380 BasicCegarLoop]: trace histogram [16, 16, 10, 6, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2019-11-16 00:07:29,055 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-16 00:07:29,055 INFO L410 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-16 00:07:29,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-16 00:07:29,056 INFO L82 PathProgramCache]: Analyzing trace with hash -577843254, now seen corresponding path program 1 times [2019-11-16 00:07:29,056 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-16 00:07:29,056 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1470954768] [2019-11-16 00:07:29,056 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:07:29,056 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:07:29,057 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-16 00:07:29,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:07:29,550 INFO L134 CoverageAnalysis]: Checked inductivity of 400 backedges. 26 proven. 374 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-16 00:07:29,551 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1470954768] [2019-11-16 00:07:29,551 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [545689155] [2019-11-16 00:07:29,551 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_efe00843-38f0-469f-800f-0021fb6096f6/bin/uautomizer/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-16 00:07:29,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:07:29,635 INFO L256 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 11 conjunts are in the unsatisfiable core [2019-11-16 00:07:29,637 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-16 00:07:29,976 INFO L134 CoverageAnalysis]: Checked inductivity of 400 backedges. 210 proven. 92 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2019-11-16 00:07:29,982 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-16 00:07:29,985 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 11] total 34 [2019-11-16 00:07:29,985 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545381365] [2019-11-16 00:07:29,986 INFO L442 AbstractCegarLoop]: Interpolant automaton has 35 states [2019-11-16 00:07:29,988 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-16 00:07:29,989 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2019-11-16 00:07:29,989 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=208, Invalid=982, Unknown=0, NotChecked=0, Total=1190 [2019-11-16 00:07:29,990 INFO L87 Difference]: Start difference. First operand 644 states and 755 transitions. Second operand 35 states. [2019-11-16 00:07:33,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-16 00:07:33,346 INFO L93 Difference]: Finished difference Result 2064 states and 2515 transitions. [2019-11-16 00:07:33,348 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2019-11-16 00:07:33,348 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 67 [2019-11-16 00:07:33,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-16 00:07:33,354 INFO L225 Difference]: With dead ends: 2064 [2019-11-16 00:07:33,355 INFO L226 Difference]: Without dead ends: 1493 [2019-11-16 00:07:33,360 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 118 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4387 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=2552, Invalid=11728, Unknown=0, NotChecked=0, Total=14280 [2019-11-16 00:07:33,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1493 states. [2019-11-16 00:07:33,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1493 to 501. [2019-11-16 00:07:33,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 501 states. [2019-11-16 00:07:33,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 501 states to 501 states and 608 transitions. [2019-11-16 00:07:33,409 INFO L78 Accepts]: Start accepts. Automaton has 501 states and 608 transitions. Word has length 67 [2019-11-16 00:07:33,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-16 00:07:33,410 INFO L462 AbstractCegarLoop]: Abstraction has 501 states and 608 transitions. [2019-11-16 00:07:33,410 INFO L463 AbstractCegarLoop]: Interpolant automaton has 35 states. [2019-11-16 00:07:33,410 INFO L276 IsEmpty]: Start isEmpty. Operand 501 states and 608 transitions. [2019-11-16 00:07:33,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2019-11-16 00:07:33,411 INFO L372 BasicCegarLoop]: Found error trace [2019-11-16 00:07:33,411 INFO L380 BasicCegarLoop]: trace histogram [18, 18, 12, 6, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2019-11-16 00:07:33,622 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-16 00:07:33,622 INFO L410 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-16 00:07:33,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-16 00:07:33,623 INFO L82 PathProgramCache]: Analyzing trace with hash 2091458462, now seen corresponding path program 2 times [2019-11-16 00:07:33,623 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-16 00:07:33,623 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [848026930] [2019-11-16 00:07:33,623 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:07:33,623 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:07:33,623 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-16 00:07:33,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:07:33,953 INFO L134 CoverageAnalysis]: Checked inductivity of 503 backedges. 34 proven. 469 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-16 00:07:33,953 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [848026930] [2019-11-16 00:07:33,953 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [278164877] [2019-11-16 00:07:33,953 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_efe00843-38f0-469f-800f-0021fb6096f6/bin/uautomizer/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-16 00:07:34,016 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-11-16 00:07:34,016 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-16 00:07:34,017 INFO L256 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 12 conjunts are in the unsatisfiable core [2019-11-16 00:07:34,018 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-16 00:07:34,281 INFO L134 CoverageAnalysis]: Checked inductivity of 503 backedges. 263 proven. 117 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2019-11-16 00:07:34,281 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-16 00:07:34,281 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 12] total 37 [2019-11-16 00:07:34,282 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [559087842] [2019-11-16 00:07:34,282 INFO L442 AbstractCegarLoop]: Interpolant automaton has 38 states [2019-11-16 00:07:34,282 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-16 00:07:34,283 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2019-11-16 00:07:34,283 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=238, Invalid=1168, Unknown=0, NotChecked=0, Total=1406 [2019-11-16 00:07:34,283 INFO L87 Difference]: Start difference. First operand 501 states and 608 transitions. Second operand 38 states. [2019-11-16 00:07:37,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-16 00:07:37,284 INFO L93 Difference]: Finished difference Result 1888 states and 2315 transitions. [2019-11-16 00:07:37,286 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 106 states. [2019-11-16 00:07:37,286 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 73 [2019-11-16 00:07:37,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-16 00:07:37,292 INFO L225 Difference]: With dead ends: 1888 [2019-11-16 00:07:37,292 INFO L226 Difference]: Without dead ends: 1452 [2019-11-16 00:07:37,297 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 129 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5281 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=3026, Invalid=14004, Unknown=0, NotChecked=0, Total=17030 [2019-11-16 00:07:37,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1452 states. [2019-11-16 00:07:37,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1452 to 558. [2019-11-16 00:07:37,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 558 states. [2019-11-16 00:07:37,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 558 states to 558 states and 674 transitions. [2019-11-16 00:07:37,367 INFO L78 Accepts]: Start accepts. Automaton has 558 states and 674 transitions. Word has length 73 [2019-11-16 00:07:37,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-16 00:07:37,368 INFO L462 AbstractCegarLoop]: Abstraction has 558 states and 674 transitions. [2019-11-16 00:07:37,368 INFO L463 AbstractCegarLoop]: Interpolant automaton has 38 states. [2019-11-16 00:07:37,368 INFO L276 IsEmpty]: Start isEmpty. Operand 558 states and 674 transitions. [2019-11-16 00:07:37,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2019-11-16 00:07:37,369 INFO L372 BasicCegarLoop]: Found error trace [2019-11-16 00:07:37,369 INFO L380 BasicCegarLoop]: trace histogram [20, 20, 14, 6, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2019-11-16 00:07:37,572 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-16 00:07:37,573 INFO L410 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-16 00:07:37,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-16 00:07:37,573 INFO L82 PathProgramCache]: Analyzing trace with hash 2051483018, now seen corresponding path program 3 times [2019-11-16 00:07:37,573 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-16 00:07:37,573 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1138015687] [2019-11-16 00:07:37,573 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:07:37,573 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:07:37,574 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-16 00:07:37,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:07:37,930 INFO L134 CoverageAnalysis]: Checked inductivity of 618 backedges. 45 proven. 573 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-16 00:07:37,930 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1138015687] [2019-11-16 00:07:37,930 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1134966165] [2019-11-16 00:07:37,930 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_efe00843-38f0-469f-800f-0021fb6096f6/bin/uautomizer/z3 Starting monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-16 00:07:37,989 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2019-11-16 00:07:37,989 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-16 00:07:37,989 INFO L256 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 10 conjunts are in the unsatisfiable core [2019-11-16 00:07:37,991 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-16 00:07:38,130 INFO L134 CoverageAnalysis]: Checked inductivity of 618 backedges. 355 proven. 1 refuted. 0 times theorem prover too weak. 262 trivial. 0 not checked. [2019-11-16 00:07:38,131 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-16 00:07:38,131 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 8] total 36 [2019-11-16 00:07:38,131 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2075803679] [2019-11-16 00:07:38,131 INFO L442 AbstractCegarLoop]: Interpolant automaton has 36 states [2019-11-16 00:07:38,131 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-16 00:07:38,132 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2019-11-16 00:07:38,132 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=169, Invalid=1091, Unknown=0, NotChecked=0, Total=1260 [2019-11-16 00:07:38,132 INFO L87 Difference]: Start difference. First operand 558 states and 674 transitions. Second operand 36 states. [2019-11-16 00:07:42,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-16 00:07:42,130 INFO L93 Difference]: Finished difference Result 1624 states and 1959 transitions. [2019-11-16 00:07:42,130 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 115 states. [2019-11-16 00:07:42,130 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 79 [2019-11-16 00:07:42,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-16 00:07:42,135 INFO L225 Difference]: With dead ends: 1624 [2019-11-16 00:07:42,135 INFO L226 Difference]: Without dead ends: 1293 [2019-11-16 00:07:42,136 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 223 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 146 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7234 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=3500, Invalid=18256, Unknown=0, NotChecked=0, Total=21756 [2019-11-16 00:07:42,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1293 states. [2019-11-16 00:07:42,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1293 to 916. [2019-11-16 00:07:42,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 916 states. [2019-11-16 00:07:42,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 916 states to 916 states and 1070 transitions. [2019-11-16 00:07:42,214 INFO L78 Accepts]: Start accepts. Automaton has 916 states and 1070 transitions. Word has length 79 [2019-11-16 00:07:42,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-16 00:07:42,215 INFO L462 AbstractCegarLoop]: Abstraction has 916 states and 1070 transitions. [2019-11-16 00:07:42,215 INFO L463 AbstractCegarLoop]: Interpolant automaton has 36 states. [2019-11-16 00:07:42,215 INFO L276 IsEmpty]: Start isEmpty. Operand 916 states and 1070 transitions. [2019-11-16 00:07:42,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2019-11-16 00:07:42,216 INFO L372 BasicCegarLoop]: Found error trace [2019-11-16 00:07:42,217 INFO L380 BasicCegarLoop]: trace histogram [20, 20, 10, 10, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2019-11-16 00:07:42,420 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-16 00:07:42,420 INFO L410 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-16 00:07:42,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-16 00:07:42,420 INFO L82 PathProgramCache]: Analyzing trace with hash -741345910, now seen corresponding path program 4 times [2019-11-16 00:07:42,421 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-16 00:07:42,421 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [494177203] [2019-11-16 00:07:42,421 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:07:42,421 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:07:42,421 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-16 00:07:42,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:07:42,710 INFO L134 CoverageAnalysis]: Checked inductivity of 618 backedges. 31 proven. 547 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2019-11-16 00:07:42,710 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [494177203] [2019-11-16 00:07:42,710 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1802863067] [2019-11-16 00:07:42,710 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_efe00843-38f0-469f-800f-0021fb6096f6/bin/uautomizer/z3 Starting monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-16 00:07:42,783 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-11-16 00:07:42,783 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-16 00:07:42,784 INFO L256 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 19 conjunts are in the unsatisfiable core [2019-11-16 00:07:42,786 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-16 00:07:43,186 INFO L134 CoverageAnalysis]: Checked inductivity of 618 backedges. 297 proven. 295 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2019-11-16 00:07:43,186 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-16 00:07:43,187 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 20] total 41 [2019-11-16 00:07:43,187 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [803225141] [2019-11-16 00:07:43,187 INFO L442 AbstractCegarLoop]: Interpolant automaton has 41 states [2019-11-16 00:07:43,187 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-16 00:07:43,187 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2019-11-16 00:07:43,187 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=205, Invalid=1435, Unknown=0, NotChecked=0, Total=1640 [2019-11-16 00:07:43,188 INFO L87 Difference]: Start difference. First operand 916 states and 1070 transitions. Second operand 41 states. [2019-11-16 00:07:46,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-16 00:07:46,647 INFO L93 Difference]: Finished difference Result 2607 states and 3032 transitions. [2019-11-16 00:07:46,648 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2019-11-16 00:07:46,648 INFO L78 Accepts]: Start accepts. Automaton has 41 states. Word has length 79 [2019-11-16 00:07:46,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-16 00:07:46,657 INFO L225 Difference]: With dead ends: 2607 [2019-11-16 00:07:46,657 INFO L226 Difference]: Without dead ends: 1933 [2019-11-16 00:07:46,660 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 125 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4517 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=2905, Invalid=13097, Unknown=0, NotChecked=0, Total=16002 [2019-11-16 00:07:46,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1933 states. [2019-11-16 00:07:46,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1933 to 629. [2019-11-16 00:07:46,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 629 states. [2019-11-16 00:07:46,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 629 states to 629 states and 743 transitions. [2019-11-16 00:07:46,729 INFO L78 Accepts]: Start accepts. Automaton has 629 states and 743 transitions. Word has length 79 [2019-11-16 00:07:46,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-16 00:07:46,730 INFO L462 AbstractCegarLoop]: Abstraction has 629 states and 743 transitions. [2019-11-16 00:07:46,730 INFO L463 AbstractCegarLoop]: Interpolant automaton has 41 states. [2019-11-16 00:07:46,730 INFO L276 IsEmpty]: Start isEmpty. Operand 629 states and 743 transitions. [2019-11-16 00:07:46,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2019-11-16 00:07:46,731 INFO L372 BasicCegarLoop]: Found error trace [2019-11-16 00:07:46,731 INFO L380 BasicCegarLoop]: trace histogram [20, 20, 15, 5, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2019-11-16 00:07:46,937 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-16 00:07:46,937 INFO L410 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-16 00:07:46,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-16 00:07:46,938 INFO L82 PathProgramCache]: Analyzing trace with hash -216004410, now seen corresponding path program 1 times [2019-11-16 00:07:46,938 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-16 00:07:46,938 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [107664443] [2019-11-16 00:07:46,938 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:07:46,938 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:07:46,938 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-16 00:07:46,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:07:47,364 INFO L134 CoverageAnalysis]: Checked inductivity of 618 backedges. 103 proven. 513 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-11-16 00:07:47,365 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [107664443] [2019-11-16 00:07:47,365 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [773536559] [2019-11-16 00:07:47,365 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_efe00843-38f0-469f-800f-0021fb6096f6/bin/uautomizer/z3 Starting monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-16 00:07:47,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:07:47,447 INFO L256 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 13 conjunts are in the unsatisfiable core [2019-11-16 00:07:47,448 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-16 00:07:47,711 INFO L134 CoverageAnalysis]: Checked inductivity of 618 backedges. 322 proven. 145 refuted. 0 times theorem prover too weak. 151 trivial. 0 not checked. [2019-11-16 00:07:47,711 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-16 00:07:47,711 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 13] total 40 [2019-11-16 00:07:47,711 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [618337848] [2019-11-16 00:07:47,711 INFO L442 AbstractCegarLoop]: Interpolant automaton has 41 states [2019-11-16 00:07:47,711 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-16 00:07:47,712 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2019-11-16 00:07:47,712 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=238, Invalid=1402, Unknown=0, NotChecked=0, Total=1640 [2019-11-16 00:07:47,712 INFO L87 Difference]: Start difference. First operand 629 states and 743 transitions. Second operand 41 states. [2019-11-16 00:07:49,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-16 00:07:49,949 INFO L93 Difference]: Finished difference Result 1572 states and 1864 transitions. [2019-11-16 00:07:49,950 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2019-11-16 00:07:49,950 INFO L78 Accepts]: Start accepts. Automaton has 41 states. Word has length 79 [2019-11-16 00:07:49,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-16 00:07:49,954 INFO L225 Difference]: With dead ends: 1572 [2019-11-16 00:07:49,954 INFO L226 Difference]: Without dead ends: 877 [2019-11-16 00:07:49,956 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 112 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4014 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=2656, Invalid=10226, Unknown=0, NotChecked=0, Total=12882 [2019-11-16 00:07:49,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 877 states. [2019-11-16 00:07:50,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 877 to 766. [2019-11-16 00:07:50,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 766 states. [2019-11-16 00:07:50,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 766 states to 766 states and 898 transitions. [2019-11-16 00:07:50,008 INFO L78 Accepts]: Start accepts. Automaton has 766 states and 898 transitions. Word has length 79 [2019-11-16 00:07:50,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-16 00:07:50,009 INFO L462 AbstractCegarLoop]: Abstraction has 766 states and 898 transitions. [2019-11-16 00:07:50,009 INFO L463 AbstractCegarLoop]: Interpolant automaton has 41 states. [2019-11-16 00:07:50,009 INFO L276 IsEmpty]: Start isEmpty. Operand 766 states and 898 transitions. [2019-11-16 00:07:50,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2019-11-16 00:07:50,010 INFO L372 BasicCegarLoop]: Found error trace [2019-11-16 00:07:50,011 INFO L380 BasicCegarLoop]: trace histogram [22, 22, 12, 10, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2019-11-16 00:07:50,213 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-16 00:07:50,213 INFO L410 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-16 00:07:50,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-16 00:07:50,213 INFO L82 PathProgramCache]: Analyzing trace with hash 600454234, now seen corresponding path program 5 times [2019-11-16 00:07:50,213 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-16 00:07:50,213 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [463191246] [2019-11-16 00:07:50,214 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:07:50,214 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:07:50,214 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-16 00:07:50,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:07:50,484 INFO L134 CoverageAnalysis]: Checked inductivity of 745 backedges. 31 proven. 657 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2019-11-16 00:07:50,485 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [463191246] [2019-11-16 00:07:50,485 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [263986916] [2019-11-16 00:07:50,485 INFO L92 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_efe00843-38f0-469f-800f-0021fb6096f6/bin/uautomizer/z3 Starting monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-16 00:07:50,576 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 13 check-sat command(s) [2019-11-16 00:07:50,577 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-16 00:07:50,578 INFO L256 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 14 conjunts are in the unsatisfiable core [2019-11-16 00:07:50,579 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-16 00:07:50,830 INFO L134 CoverageAnalysis]: Checked inductivity of 745 backedges. 387 proven. 176 refuted. 0 times theorem prover too weak. 182 trivial. 0 not checked. [2019-11-16 00:07:50,830 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-16 00:07:50,830 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 14] total 35 [2019-11-16 00:07:50,830 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1677215603] [2019-11-16 00:07:50,830 INFO L442 AbstractCegarLoop]: Interpolant automaton has 36 states [2019-11-16 00:07:50,831 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-16 00:07:50,831 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2019-11-16 00:07:50,831 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=226, Invalid=1034, Unknown=0, NotChecked=0, Total=1260 [2019-11-16 00:07:50,831 INFO L87 Difference]: Start difference. First operand 766 states and 898 transitions. Second operand 36 states. [2019-11-16 00:07:51,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-16 00:07:51,389 INFO L93 Difference]: Finished difference Result 1632 states and 1925 transitions. [2019-11-16 00:07:51,389 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2019-11-16 00:07:51,389 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 85 [2019-11-16 00:07:51,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-16 00:07:51,393 INFO L225 Difference]: With dead ends: 1632 [2019-11-16 00:07:51,393 INFO L226 Difference]: Without dead ends: 951 [2019-11-16 00:07:51,394 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 917 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=763, Invalid=2543, Unknown=0, NotChecked=0, Total=3306 [2019-11-16 00:07:51,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 951 states. [2019-11-16 00:07:51,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 951 to 841. [2019-11-16 00:07:51,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 841 states. [2019-11-16 00:07:51,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 841 states to 841 states and 979 transitions. [2019-11-16 00:07:51,457 INFO L78 Accepts]: Start accepts. Automaton has 841 states and 979 transitions. Word has length 85 [2019-11-16 00:07:51,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-16 00:07:51,457 INFO L462 AbstractCegarLoop]: Abstraction has 841 states and 979 transitions. [2019-11-16 00:07:51,457 INFO L463 AbstractCegarLoop]: Interpolant automaton has 36 states. [2019-11-16 00:07:51,457 INFO L276 IsEmpty]: Start isEmpty. Operand 841 states and 979 transitions. [2019-11-16 00:07:51,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2019-11-16 00:07:51,458 INFO L372 BasicCegarLoop]: Found error trace [2019-11-16 00:07:51,458 INFO L380 BasicCegarLoop]: trace histogram [24, 24, 12, 12, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2019-11-16 00:07:51,658 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-16 00:07:51,658 INFO L410 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-16 00:07:51,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-16 00:07:51,659 INFO L82 PathProgramCache]: Analyzing trace with hash -1846584762, now seen corresponding path program 6 times [2019-11-16 00:07:51,659 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-16 00:07:51,659 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1030425539] [2019-11-16 00:07:51,659 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:07:51,659 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:07:51,659 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-16 00:07:51,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:07:51,976 INFO L134 CoverageAnalysis]: Checked inductivity of 884 backedges. 45 proven. 782 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2019-11-16 00:07:51,976 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1030425539] [2019-11-16 00:07:51,976 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1986970385] [2019-11-16 00:07:51,976 INFO L92 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_efe00843-38f0-469f-800f-0021fb6096f6/bin/uautomizer/z3 Starting monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-16 00:07:52,063 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2019-11-16 00:07:52,063 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-16 00:07:52,064 INFO L256 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 24 conjunts are in the unsatisfiable core [2019-11-16 00:07:52,066 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-16 00:07:52,223 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-16 00:07:52,254 INFO L134 CoverageAnalysis]: Checked inductivity of 884 backedges. 34 proven. 464 refuted. 0 times theorem prover too weak. 386 trivial. 0 not checked. [2019-11-16 00:07:52,254 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-16 00:07:52,254 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 9] total 33 [2019-11-16 00:07:52,254 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1629557635] [2019-11-16 00:07:52,255 INFO L442 AbstractCegarLoop]: Interpolant automaton has 33 states [2019-11-16 00:07:52,255 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-16 00:07:52,255 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2019-11-16 00:07:52,255 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=925, Unknown=0, NotChecked=0, Total=1056 [2019-11-16 00:07:52,255 INFO L87 Difference]: Start difference. First operand 841 states and 979 transitions. Second operand 33 states. [2019-11-16 00:07:56,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-16 00:07:56,727 INFO L93 Difference]: Finished difference Result 2872 states and 3361 transitions. [2019-11-16 00:07:56,727 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 145 states. [2019-11-16 00:07:56,727 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 91 [2019-11-16 00:07:56,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-16 00:07:56,735 INFO L225 Difference]: With dead ends: 2872 [2019-11-16 00:07:56,735 INFO L226 Difference]: Without dead ends: 2354 [2019-11-16 00:07:56,737 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 257 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 173 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11608 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=4196, Invalid=26254, Unknown=0, NotChecked=0, Total=30450 [2019-11-16 00:07:56,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2354 states. [2019-11-16 00:07:56,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2354 to 1005. [2019-11-16 00:07:56,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1005 states. [2019-11-16 00:07:56,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1005 states to 1005 states and 1171 transitions. [2019-11-16 00:07:56,837 INFO L78 Accepts]: Start accepts. Automaton has 1005 states and 1171 transitions. Word has length 91 [2019-11-16 00:07:56,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-16 00:07:56,838 INFO L462 AbstractCegarLoop]: Abstraction has 1005 states and 1171 transitions. [2019-11-16 00:07:56,838 INFO L463 AbstractCegarLoop]: Interpolant automaton has 33 states. [2019-11-16 00:07:56,838 INFO L276 IsEmpty]: Start isEmpty. Operand 1005 states and 1171 transitions. [2019-11-16 00:07:56,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2019-11-16 00:07:56,839 INFO L372 BasicCegarLoop]: Found error trace [2019-11-16 00:07:56,839 INFO L380 BasicCegarLoop]: trace histogram [24, 24, 18, 6, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2019-11-16 00:07:57,042 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-16 00:07:57,042 INFO L410 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-16 00:07:57,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-16 00:07:57,043 INFO L82 PathProgramCache]: Analyzing trace with hash 1046927688, now seen corresponding path program 2 times [2019-11-16 00:07:57,043 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-16 00:07:57,043 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2124543040] [2019-11-16 00:07:57,043 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:07:57,043 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:07:57,043 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-16 00:07:57,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:07:57,533 INFO L134 CoverageAnalysis]: Checked inductivity of 884 backedges. 166 proven. 716 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-11-16 00:07:57,534 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2124543040] [2019-11-16 00:07:57,534 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1147343398] [2019-11-16 00:07:57,534 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_efe00843-38f0-469f-800f-0021fb6096f6/bin/uautomizer/z3 Starting monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-16 00:07:57,649 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-11-16 00:07:57,650 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-16 00:07:57,650 INFO L256 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 12 conjunts are in the unsatisfiable core [2019-11-16 00:07:57,651 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-16 00:07:57,899 INFO L134 CoverageAnalysis]: Checked inductivity of 884 backedges. 6 proven. 469 refuted. 0 times theorem prover too weak. 409 trivial. 0 not checked. [2019-11-16 00:07:57,900 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-16 00:07:57,900 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 12] total 43 [2019-11-16 00:07:57,900 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [932793958] [2019-11-16 00:07:57,900 INFO L442 AbstractCegarLoop]: Interpolant automaton has 44 states [2019-11-16 00:07:57,900 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-16 00:07:57,901 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2019-11-16 00:07:57,901 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=253, Invalid=1639, Unknown=0, NotChecked=0, Total=1892 [2019-11-16 00:07:57,901 INFO L87 Difference]: Start difference. First operand 1005 states and 1171 transitions. Second operand 44 states. [2019-11-16 00:07:59,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-16 00:07:59,220 INFO L93 Difference]: Finished difference Result 2046 states and 2395 transitions. [2019-11-16 00:07:59,223 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2019-11-16 00:07:59,223 INFO L78 Accepts]: Start accepts. Automaton has 44 states. Word has length 91 [2019-11-16 00:07:59,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-16 00:07:59,228 INFO L225 Difference]: With dead ends: 2046 [2019-11-16 00:07:59,228 INFO L226 Difference]: Without dead ends: 1430 [2019-11-16 00:07:59,230 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2563 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=1417, Invalid=7139, Unknown=0, NotChecked=0, Total=8556 [2019-11-16 00:07:59,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1430 states. [2019-11-16 00:07:59,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1430 to 1109. [2019-11-16 00:07:59,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1109 states. [2019-11-16 00:07:59,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1109 states to 1109 states and 1303 transitions. [2019-11-16 00:07:59,312 INFO L78 Accepts]: Start accepts. Automaton has 1109 states and 1303 transitions. Word has length 91 [2019-11-16 00:07:59,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-16 00:07:59,312 INFO L462 AbstractCegarLoop]: Abstraction has 1109 states and 1303 transitions. [2019-11-16 00:07:59,312 INFO L463 AbstractCegarLoop]: Interpolant automaton has 44 states. [2019-11-16 00:07:59,312 INFO L276 IsEmpty]: Start isEmpty. Operand 1109 states and 1303 transitions. [2019-11-16 00:07:59,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2019-11-16 00:07:59,313 INFO L372 BasicCegarLoop]: Found error trace [2019-11-16 00:07:59,314 INFO L380 BasicCegarLoop]: trace histogram [24, 24, 19, 5, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2019-11-16 00:07:59,514 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-16 00:07:59,514 INFO L410 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-16 00:07:59,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-16 00:07:59,515 INFO L82 PathProgramCache]: Analyzing trace with hash 314960262, now seen corresponding path program 3 times [2019-11-16 00:07:59,515 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-16 00:07:59,515 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [747111793] [2019-11-16 00:07:59,515 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:07:59,515 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:07:59,515 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-16 00:07:59,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:08:00,037 INFO L134 CoverageAnalysis]: Checked inductivity of 884 backedges. 152 proven. 730 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-11-16 00:08:00,037 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [747111793] [2019-11-16 00:08:00,037 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1363157055] [2019-11-16 00:08:00,038 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_efe00843-38f0-469f-800f-0021fb6096f6/bin/uautomizer/z3 Starting monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-16 00:08:00,130 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2019-11-16 00:08:00,131 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-16 00:08:00,132 INFO L256 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 31 conjunts are in the unsatisfiable core [2019-11-16 00:08:00,133 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-16 00:08:00,186 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-16 00:08:00,187 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-16 00:08:00,235 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-16 00:08:00,360 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-16 00:08:00,403 INFO L134 CoverageAnalysis]: Checked inductivity of 884 backedges. 0 proven. 464 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2019-11-16 00:08:00,403 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-16 00:08:00,403 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 9] total 41 [2019-11-16 00:08:00,403 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1400876475] [2019-11-16 00:08:00,403 INFO L442 AbstractCegarLoop]: Interpolant automaton has 41 states [2019-11-16 00:08:00,403 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-16 00:08:00,404 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2019-11-16 00:08:00,404 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=180, Invalid=1460, Unknown=0, NotChecked=0, Total=1640 [2019-11-16 00:08:00,404 INFO L87 Difference]: Start difference. First operand 1109 states and 1303 transitions. Second operand 41 states. [2019-11-16 00:08:05,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-16 00:08:05,152 INFO L93 Difference]: Finished difference Result 1892 states and 2151 transitions. [2019-11-16 00:08:05,152 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 130 states. [2019-11-16 00:08:05,152 INFO L78 Accepts]: Start accepts. Automaton has 41 states. Word has length 91 [2019-11-16 00:08:05,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-16 00:08:05,158 INFO L225 Difference]: With dead ends: 1892 [2019-11-16 00:08:05,158 INFO L226 Difference]: Without dead ends: 1568 [2019-11-16 00:08:05,160 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 250 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 166 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10041 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=4964, Invalid=23092, Unknown=0, NotChecked=0, Total=28056 [2019-11-16 00:08:05,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1568 states. [2019-11-16 00:08:05,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1568 to 1217. [2019-11-16 00:08:05,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1217 states. [2019-11-16 00:08:05,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1217 states to 1217 states and 1423 transitions. [2019-11-16 00:08:05,244 INFO L78 Accepts]: Start accepts. Automaton has 1217 states and 1423 transitions. Word has length 91 [2019-11-16 00:08:05,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-16 00:08:05,244 INFO L462 AbstractCegarLoop]: Abstraction has 1217 states and 1423 transitions. [2019-11-16 00:08:05,244 INFO L463 AbstractCegarLoop]: Interpolant automaton has 41 states. [2019-11-16 00:08:05,244 INFO L276 IsEmpty]: Start isEmpty. Operand 1217 states and 1423 transitions. [2019-11-16 00:08:05,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2019-11-16 00:08:05,245 INFO L372 BasicCegarLoop]: Found error trace [2019-11-16 00:08:05,246 INFO L380 BasicCegarLoop]: trace histogram [24, 24, 21, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-16 00:08:05,449 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-16 00:08:05,449 INFO L410 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-16 00:08:05,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-16 00:08:05,449 INFO L82 PathProgramCache]: Analyzing trace with hash 1277696966, now seen corresponding path program 1 times [2019-11-16 00:08:05,449 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-16 00:08:05,449 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [67854354] [2019-11-16 00:08:05,449 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:08:05,449 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:08:05,450 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-16 00:08:05,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:08:06,179 INFO L134 CoverageAnalysis]: Checked inductivity of 884 backedges. 134 proven. 750 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-16 00:08:06,179 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [67854354] [2019-11-16 00:08:06,179 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1170542833] [2019-11-16 00:08:06,179 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_efe00843-38f0-469f-800f-0021fb6096f6/bin/uautomizer/z3 Starting monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-16 00:08:06,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:08:06,326 INFO L256 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 15 conjunts are in the unsatisfiable core [2019-11-16 00:08:06,327 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-16 00:08:06,892 INFO L134 CoverageAnalysis]: Checked inductivity of 884 backedges. 458 proven. 210 refuted. 0 times theorem prover too weak. 216 trivial. 0 not checked. [2019-11-16 00:08:06,892 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-16 00:08:06,893 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 15] total 48 [2019-11-16 00:08:06,893 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [864422835] [2019-11-16 00:08:06,894 INFO L442 AbstractCegarLoop]: Interpolant automaton has 49 states [2019-11-16 00:08:06,894 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-16 00:08:06,894 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2019-11-16 00:08:06,895 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=340, Invalid=2012, Unknown=0, NotChecked=0, Total=2352 [2019-11-16 00:08:06,895 INFO L87 Difference]: Start difference. First operand 1217 states and 1423 transitions. Second operand 49 states. [2019-11-16 00:08:09,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-16 00:08:09,840 INFO L93 Difference]: Finished difference Result 2759 states and 3247 transitions. [2019-11-16 00:08:09,841 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2019-11-16 00:08:09,841 INFO L78 Accepts]: Start accepts. Automaton has 49 states. Word has length 91 [2019-11-16 00:08:09,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-16 00:08:09,846 INFO L225 Difference]: With dead ends: 2759 [2019-11-16 00:08:09,846 INFO L226 Difference]: Without dead ends: 1429 [2019-11-16 00:08:09,849 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 123 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4588 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=3209, Invalid=12291, Unknown=0, NotChecked=0, Total=15500 [2019-11-16 00:08:09,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1429 states. [2019-11-16 00:08:09,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1429 to 1101. [2019-11-16 00:08:09,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1101 states. [2019-11-16 00:08:09,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1101 states to 1101 states and 1288 transitions. [2019-11-16 00:08:09,944 INFO L78 Accepts]: Start accepts. Automaton has 1101 states and 1288 transitions. Word has length 91 [2019-11-16 00:08:09,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-16 00:08:09,944 INFO L462 AbstractCegarLoop]: Abstraction has 1101 states and 1288 transitions. [2019-11-16 00:08:09,944 INFO L463 AbstractCegarLoop]: Interpolant automaton has 49 states. [2019-11-16 00:08:09,945 INFO L276 IsEmpty]: Start isEmpty. Operand 1101 states and 1288 transitions. [2019-11-16 00:08:09,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2019-11-16 00:08:09,945 INFO L372 BasicCegarLoop]: Found error trace [2019-11-16 00:08:09,945 INFO L380 BasicCegarLoop]: trace histogram [26, 26, 23, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-16 00:08:10,146 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-16 00:08:10,146 INFO L410 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-16 00:08:10,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-16 00:08:10,147 INFO L82 PathProgramCache]: Analyzing trace with hash 29715290, now seen corresponding path program 2 times [2019-11-16 00:08:10,147 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-16 00:08:10,147 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1602069138] [2019-11-16 00:08:10,147 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:08:10,147 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:08:10,147 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-16 00:08:10,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:08:10,778 INFO L134 CoverageAnalysis]: Checked inductivity of 1035 backedges. 163 proven. 872 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-16 00:08:10,778 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1602069138] [2019-11-16 00:08:10,778 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1851283998] [2019-11-16 00:08:10,779 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_efe00843-38f0-469f-800f-0021fb6096f6/bin/uautomizer/z3 Starting monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-16 00:08:10,893 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-11-16 00:08:10,893 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-16 00:08:10,894 INFO L256 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 16 conjunts are in the unsatisfiable core [2019-11-16 00:08:10,895 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-16 00:08:11,269 INFO L134 CoverageAnalysis]: Checked inductivity of 1035 backedges. 535 proven. 247 refuted. 0 times theorem prover too weak. 253 trivial. 0 not checked. [2019-11-16 00:08:11,269 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-16 00:08:11,270 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 16] total 51 [2019-11-16 00:08:11,270 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [839951853] [2019-11-16 00:08:11,270 INFO L442 AbstractCegarLoop]: Interpolant automaton has 52 states [2019-11-16 00:08:11,270 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-16 00:08:11,270 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2019-11-16 00:08:11,270 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=391, Invalid=2261, Unknown=0, NotChecked=0, Total=2652 [2019-11-16 00:08:11,270 INFO L87 Difference]: Start difference. First operand 1101 states and 1288 transitions. Second operand 52 states. [2019-11-16 00:08:14,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-16 00:08:14,323 INFO L93 Difference]: Finished difference Result 2682 states and 3156 transitions. [2019-11-16 00:08:14,324 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 98 states. [2019-11-16 00:08:14,324 INFO L78 Accepts]: Start accepts. Automaton has 52 states. Word has length 97 [2019-11-16 00:08:14,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-16 00:08:14,329 INFO L225 Difference]: With dead ends: 2682 [2019-11-16 00:08:14,329 INFO L226 Difference]: Without dead ends: 1454 [2019-11-16 00:08:14,330 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 215 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 131 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5278 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=3643, Invalid=13913, Unknown=0, NotChecked=0, Total=17556 [2019-11-16 00:08:14,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1454 states. [2019-11-16 00:08:14,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1454 to 1182. [2019-11-16 00:08:14,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1182 states. [2019-11-16 00:08:14,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1182 states to 1182 states and 1378 transitions. [2019-11-16 00:08:14,406 INFO L78 Accepts]: Start accepts. Automaton has 1182 states and 1378 transitions. Word has length 97 [2019-11-16 00:08:14,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-16 00:08:14,407 INFO L462 AbstractCegarLoop]: Abstraction has 1182 states and 1378 transitions. [2019-11-16 00:08:14,407 INFO L463 AbstractCegarLoop]: Interpolant automaton has 52 states. [2019-11-16 00:08:14,407 INFO L276 IsEmpty]: Start isEmpty. Operand 1182 states and 1378 transitions. [2019-11-16 00:08:14,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2019-11-16 00:08:14,408 INFO L372 BasicCegarLoop]: Found error trace [2019-11-16 00:08:14,408 INFO L380 BasicCegarLoop]: trace histogram [28, 28, 25, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-16 00:08:14,611 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-16 00:08:14,611 INFO L410 AbstractCegarLoop]: === Iteration 32 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-16 00:08:14,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-16 00:08:14,611 INFO L82 PathProgramCache]: Analyzing trace with hash -1345277178, now seen corresponding path program 3 times [2019-11-16 00:08:14,612 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-16 00:08:14,612 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [37329813] [2019-11-16 00:08:14,612 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:08:14,612 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:08:14,612 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-16 00:08:14,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:08:15,278 INFO L134 CoverageAnalysis]: Checked inductivity of 1198 backedges. 195 proven. 1003 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-16 00:08:15,278 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [37329813] [2019-11-16 00:08:15,278 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [916503240] [2019-11-16 00:08:15,278 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_efe00843-38f0-469f-800f-0021fb6096f6/bin/uautomizer/z3 Starting monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-16 00:08:15,391 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2019-11-16 00:08:15,391 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-16 00:08:15,392 INFO L256 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-16 00:08:15,393 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-16 00:08:15,490 INFO L134 CoverageAnalysis]: Checked inductivity of 1198 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 1136 trivial. 0 not checked. [2019-11-16 00:08:15,491 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-11-16 00:08:15,491 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [39] total 43 [2019-11-16 00:08:15,491 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2045795156] [2019-11-16 00:08:15,491 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-16 00:08:15,491 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-16 00:08:15,491 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-16 00:08:15,492 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=225, Invalid=1581, Unknown=0, NotChecked=0, Total=1806 [2019-11-16 00:08:15,492 INFO L87 Difference]: Start difference. First operand 1182 states and 1378 transitions. Second operand 5 states. [2019-11-16 00:08:15,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-16 00:08:15,610 INFO L93 Difference]: Finished difference Result 1754 states and 2030 transitions. [2019-11-16 00:08:15,610 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-16 00:08:15,610 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 103 [2019-11-16 00:08:15,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-16 00:08:15,613 INFO L225 Difference]: With dead ends: 1754 [2019-11-16 00:08:15,613 INFO L226 Difference]: Without dead ends: 882 [2019-11-16 00:08:15,614 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 520 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=235, Invalid=1745, Unknown=0, NotChecked=0, Total=1980 [2019-11-16 00:08:15,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 882 states. [2019-11-16 00:08:15,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 882 to 785. [2019-11-16 00:08:15,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 785 states. [2019-11-16 00:08:15,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 785 states to 785 states and 887 transitions. [2019-11-16 00:08:15,669 INFO L78 Accepts]: Start accepts. Automaton has 785 states and 887 transitions. Word has length 103 [2019-11-16 00:08:15,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-16 00:08:15,670 INFO L462 AbstractCegarLoop]: Abstraction has 785 states and 887 transitions. [2019-11-16 00:08:15,670 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-16 00:08:15,670 INFO L276 IsEmpty]: Start isEmpty. Operand 785 states and 887 transitions. [2019-11-16 00:08:15,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2019-11-16 00:08:15,671 INFO L372 BasicCegarLoop]: Found error trace [2019-11-16 00:08:15,671 INFO L380 BasicCegarLoop]: trace histogram [28, 28, 25, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2019-11-16 00:08:15,871 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-16 00:08:15,871 INFO L410 AbstractCegarLoop]: === Iteration 33 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-16 00:08:15,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-16 00:08:15,871 INFO L82 PathProgramCache]: Analyzing trace with hash -1343430136, now seen corresponding path program 7 times [2019-11-16 00:08:15,872 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-16 00:08:15,872 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1263135680] [2019-11-16 00:08:15,872 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:08:15,872 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:08:15,872 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-16 00:08:15,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:08:16,732 INFO L134 CoverageAnalysis]: Checked inductivity of 1198 backedges. 0 proven. 1198 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-16 00:08:16,733 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1263135680] [2019-11-16 00:08:16,733 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1626178986] [2019-11-16 00:08:16,733 INFO L92 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_efe00843-38f0-469f-800f-0021fb6096f6/bin/uautomizer/z3 Starting monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-16 00:08:16,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:08:16,862 INFO L256 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 17 conjunts are in the unsatisfiable core [2019-11-16 00:08:16,864 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-16 00:08:17,285 INFO L134 CoverageAnalysis]: Checked inductivity of 1198 backedges. 618 proven. 287 refuted. 0 times theorem prover too weak. 293 trivial. 0 not checked. [2019-11-16 00:08:17,285 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-16 00:08:17,285 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 17] total 56 [2019-11-16 00:08:17,285 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [474357334] [2019-11-16 00:08:17,286 INFO L442 AbstractCegarLoop]: Interpolant automaton has 57 states [2019-11-16 00:08:17,286 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-16 00:08:17,286 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2019-11-16 00:08:17,287 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=504, Invalid=2688, Unknown=0, NotChecked=0, Total=3192 [2019-11-16 00:08:17,287 INFO L87 Difference]: Start difference. First operand 785 states and 887 transitions. Second operand 57 states. [2019-11-16 00:08:25,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-16 00:08:25,767 INFO L93 Difference]: Finished difference Result 2769 states and 3190 transitions. [2019-11-16 00:08:25,767 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 187 states. [2019-11-16 00:08:25,767 INFO L78 Accepts]: Start accepts. Automaton has 57 states. Word has length 103 [2019-11-16 00:08:25,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-16 00:08:25,774 INFO L225 Difference]: With dead ends: 2769 [2019-11-16 00:08:25,774 INFO L226 Difference]: Without dead ends: 2106 [2019-11-16 00:08:25,777 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 312 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 224 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17723 ImplicationChecksByTransitivity, 8.4s TimeCoverageRelationStatistics Valid=8157, Invalid=42693, Unknown=0, NotChecked=0, Total=50850 [2019-11-16 00:08:25,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2106 states. [2019-11-16 00:08:25,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2106 to 848. [2019-11-16 00:08:25,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 848 states. [2019-11-16 00:08:25,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 848 states to 848 states and 955 transitions. [2019-11-16 00:08:25,848 INFO L78 Accepts]: Start accepts. Automaton has 848 states and 955 transitions. Word has length 103 [2019-11-16 00:08:25,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-16 00:08:25,848 INFO L462 AbstractCegarLoop]: Abstraction has 848 states and 955 transitions. [2019-11-16 00:08:25,848 INFO L463 AbstractCegarLoop]: Interpolant automaton has 57 states. [2019-11-16 00:08:25,848 INFO L276 IsEmpty]: Start isEmpty. Operand 848 states and 955 transitions. [2019-11-16 00:08:25,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2019-11-16 00:08:25,849 INFO L372 BasicCegarLoop]: Found error trace [2019-11-16 00:08:25,849 INFO L380 BasicCegarLoop]: trace histogram [30, 30, 26, 4, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2019-11-16 00:08:26,052 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-16 00:08:26,052 INFO L410 AbstractCegarLoop]: === Iteration 34 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-16 00:08:26,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-16 00:08:26,053 INFO L82 PathProgramCache]: Analyzing trace with hash 1300881630, now seen corresponding path program 8 times [2019-11-16 00:08:26,053 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-16 00:08:26,053 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [245028158] [2019-11-16 00:08:26,053 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:08:26,053 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:08:26,053 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-16 00:08:26,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:08:27,132 INFO L134 CoverageAnalysis]: Checked inductivity of 1373 backedges. 0 proven. 1373 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-16 00:08:27,132 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [245028158] [2019-11-16 00:08:27,133 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [808848166] [2019-11-16 00:08:27,133 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_efe00843-38f0-469f-800f-0021fb6096f6/bin/uautomizer/z3 Starting monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-16 00:08:27,272 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-11-16 00:08:27,272 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-16 00:08:27,273 INFO L256 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 17 conjunts are in the unsatisfiable core [2019-11-16 00:08:27,274 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-16 00:08:27,688 INFO L134 CoverageAnalysis]: Checked inductivity of 1373 backedges. 176 proven. 852 refuted. 0 times theorem prover too weak. 345 trivial. 0 not checked. [2019-11-16 00:08:27,689 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-16 00:08:27,689 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [44, 16] total 58 [2019-11-16 00:08:27,689 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1553460691] [2019-11-16 00:08:27,690 INFO L442 AbstractCegarLoop]: Interpolant automaton has 59 states [2019-11-16 00:08:27,690 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-16 00:08:27,690 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2019-11-16 00:08:27,690 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=508, Invalid=2914, Unknown=0, NotChecked=0, Total=3422 [2019-11-16 00:08:27,690 INFO L87 Difference]: Start difference. First operand 848 states and 955 transitions. Second operand 59 states. [2019-11-16 00:08:32,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-16 00:08:32,329 INFO L93 Difference]: Finished difference Result 1650 states and 1862 transitions. [2019-11-16 00:08:32,330 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 116 states. [2019-11-16 00:08:32,330 INFO L78 Accepts]: Start accepts. Automaton has 59 states. Word has length 109 [2019-11-16 00:08:32,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-16 00:08:32,335 INFO L225 Difference]: With dead ends: 1650 [2019-11-16 00:08:32,335 INFO L226 Difference]: Without dead ends: 1589 [2019-11-16 00:08:32,336 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 253 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 158 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7359 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=4802, Invalid=20638, Unknown=0, NotChecked=0, Total=25440 [2019-11-16 00:08:32,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1589 states. [2019-11-16 00:08:32,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1589 to 1091. [2019-11-16 00:08:32,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1091 states. [2019-11-16 00:08:32,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1091 states to 1091 states and 1236 transitions. [2019-11-16 00:08:32,417 INFO L78 Accepts]: Start accepts. Automaton has 1091 states and 1236 transitions. Word has length 109 [2019-11-16 00:08:32,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-16 00:08:32,417 INFO L462 AbstractCegarLoop]: Abstraction has 1091 states and 1236 transitions. [2019-11-16 00:08:32,417 INFO L463 AbstractCegarLoop]: Interpolant automaton has 59 states. [2019-11-16 00:08:32,417 INFO L276 IsEmpty]: Start isEmpty. Operand 1091 states and 1236 transitions. [2019-11-16 00:08:32,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2019-11-16 00:08:32,419 INFO L372 BasicCegarLoop]: Found error trace [2019-11-16 00:08:32,419 INFO L380 BasicCegarLoop]: trace histogram [30, 30, 27, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2019-11-16 00:08:32,622 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-16 00:08:32,622 INFO L410 AbstractCegarLoop]: === Iteration 35 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-16 00:08:32,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-16 00:08:32,622 INFO L82 PathProgramCache]: Analyzing trace with hash 1377782428, now seen corresponding path program 9 times [2019-11-16 00:08:32,622 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-16 00:08:32,622 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [40480638] [2019-11-16 00:08:32,623 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:08:32,623 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:08:32,623 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-16 00:08:32,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:08:33,523 INFO L134 CoverageAnalysis]: Checked inductivity of 1373 backedges. 0 proven. 1373 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-16 00:08:33,524 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [40480638] [2019-11-16 00:08:33,524 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2120716156] [2019-11-16 00:08:33,524 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_efe00843-38f0-469f-800f-0021fb6096f6/bin/uautomizer/z3 Starting monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-16 00:08:33,656 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2019-11-16 00:08:33,656 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-16 00:08:33,657 INFO L256 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 9 conjunts are in the unsatisfiable core [2019-11-16 00:08:33,658 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-16 00:08:33,684 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-16 00:08:33,684 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-16 00:08:33,717 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-16 00:08:33,774 INFO L134 CoverageAnalysis]: Checked inductivity of 1373 backedges. 711 proven. 2 refuted. 0 times theorem prover too weak. 660 trivial. 0 not checked. [2019-11-16 00:08:33,774 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-16 00:08:33,774 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 6] total 47 [2019-11-16 00:08:33,774 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [153862299] [2019-11-16 00:08:33,775 INFO L442 AbstractCegarLoop]: Interpolant automaton has 47 states [2019-11-16 00:08:33,775 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-16 00:08:33,775 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2019-11-16 00:08:33,775 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=316, Invalid=1846, Unknown=0, NotChecked=0, Total=2162 [2019-11-16 00:08:33,775 INFO L87 Difference]: Start difference. First operand 1091 states and 1236 transitions. Second operand 47 states. [2019-11-16 00:08:46,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-16 00:08:46,464 INFO L93 Difference]: Finished difference Result 2960 states and 3354 transitions. [2019-11-16 00:08:46,464 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 264 states. [2019-11-16 00:08:46,464 INFO L78 Accepts]: Start accepts. Automaton has 47 states. Word has length 109 [2019-11-16 00:08:46,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-16 00:08:46,474 INFO L225 Difference]: With dead ends: 2960 [2019-11-16 00:08:46,475 INFO L226 Difference]: Without dead ends: 2887 [2019-11-16 00:08:46,479 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 438 GetRequests, 131 SyntacticMatches, 1 SemanticMatches, 306 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36092 ImplicationChecksByTransitivity, 11.7s TimeCoverageRelationStatistics Valid=13535, Invalid=81021, Unknown=0, NotChecked=0, Total=94556 [2019-11-16 00:08:46,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2887 states. [2019-11-16 00:08:46,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2887 to 1173. [2019-11-16 00:08:46,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1173 states. [2019-11-16 00:08:46,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1173 states to 1173 states and 1356 transitions. [2019-11-16 00:08:46,583 INFO L78 Accepts]: Start accepts. Automaton has 1173 states and 1356 transitions. Word has length 109 [2019-11-16 00:08:46,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-16 00:08:46,584 INFO L462 AbstractCegarLoop]: Abstraction has 1173 states and 1356 transitions. [2019-11-16 00:08:46,584 INFO L463 AbstractCegarLoop]: Interpolant automaton has 47 states. [2019-11-16 00:08:46,584 INFO L276 IsEmpty]: Start isEmpty. Operand 1173 states and 1356 transitions. [2019-11-16 00:08:46,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2019-11-16 00:08:46,586 INFO L372 BasicCegarLoop]: Found error trace [2019-11-16 00:08:46,586 INFO L380 BasicCegarLoop]: trace histogram [45, 45, 42, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1] [2019-11-16 00:08:46,789 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-16 00:08:46,789 INFO L410 AbstractCegarLoop]: === Iteration 36 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-16 00:08:46,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-16 00:08:46,789 INFO L82 PathProgramCache]: Analyzing trace with hash 816920519, now seen corresponding path program 4 times [2019-11-16 00:08:46,789 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-16 00:08:46,789 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1301631543] [2019-11-16 00:08:46,789 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:08:46,789 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:08:46,790 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-16 00:08:46,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:08:48,419 INFO L134 CoverageAnalysis]: Checked inductivity of 3129 backedges. 94 proven. 3035 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-16 00:08:48,419 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1301631543] [2019-11-16 00:08:48,419 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [424195729] [2019-11-16 00:08:48,419 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_efe00843-38f0-469f-800f-0021fb6096f6/bin/uautomizer/z3 Starting monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-16 00:08:48,595 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-11-16 00:08:48,596 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-16 00:08:48,597 INFO L256 TraceCheckSpWp]: Trace formula consists of 322 conjuncts, 54 conjunts are in the unsatisfiable core [2019-11-16 00:08:48,600 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-16 00:08:49,059 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-16 00:08:49,821 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-16 00:08:49,893 INFO L134 CoverageAnalysis]: Checked inductivity of 3129 backedges. 1102 proven. 1696 refuted. 0 times theorem prover too weak. 331 trivial. 0 not checked. [2019-11-16 00:08:49,893 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-16 00:08:49,894 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [53, 38] total 90 [2019-11-16 00:08:49,894 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [394511183] [2019-11-16 00:08:49,894 INFO L442 AbstractCegarLoop]: Interpolant automaton has 90 states [2019-11-16 00:08:49,894 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-16 00:08:49,895 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 90 interpolants. [2019-11-16 00:08:49,895 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=834, Invalid=7176, Unknown=0, NotChecked=0, Total=8010 [2019-11-16 00:08:49,895 INFO L87 Difference]: Start difference. First operand 1173 states and 1356 transitions. Second operand 90 states. [2019-11-16 00:08:57,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-16 00:08:57,302 INFO L93 Difference]: Finished difference Result 2677 states and 3066 transitions. [2019-11-16 00:08:57,302 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 128 states. [2019-11-16 00:08:57,303 INFO L78 Accepts]: Start accepts. Automaton has 90 states. Word has length 162 [2019-11-16 00:08:57,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-16 00:08:57,306 INFO L225 Difference]: With dead ends: 2677 [2019-11-16 00:08:57,307 INFO L226 Difference]: Without dead ends: 1660 [2019-11-16 00:08:57,316 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 340 GetRequests, 127 SyntacticMatches, 0 SemanticMatches, 213 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13964 ImplicationChecksByTransitivity, 7.9s TimeCoverageRelationStatistics Valid=4651, Invalid=41359, Unknown=0, NotChecked=0, Total=46010 [2019-11-16 00:08:57,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1660 states. [2019-11-16 00:08:57,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1660 to 1198. [2019-11-16 00:08:57,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1198 states. [2019-11-16 00:08:57,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1198 states to 1198 states and 1386 transitions. [2019-11-16 00:08:57,424 INFO L78 Accepts]: Start accepts. Automaton has 1198 states and 1386 transitions. Word has length 162 [2019-11-16 00:08:57,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-16 00:08:57,425 INFO L462 AbstractCegarLoop]: Abstraction has 1198 states and 1386 transitions. [2019-11-16 00:08:57,425 INFO L463 AbstractCegarLoop]: Interpolant automaton has 90 states. [2019-11-16 00:08:57,425 INFO L276 IsEmpty]: Start isEmpty. Operand 1198 states and 1386 transitions. [2019-11-16 00:08:57,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2019-11-16 00:08:57,426 INFO L372 BasicCegarLoop]: Found error trace [2019-11-16 00:08:57,426 INFO L380 BasicCegarLoop]: trace histogram [48, 48, 45, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1] [2019-11-16 00:08:57,627 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-16 00:08:57,627 INFO L410 AbstractCegarLoop]: === Iteration 37 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-16 00:08:57,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-16 00:08:57,627 INFO L82 PathProgramCache]: Analyzing trace with hash -1393473900, now seen corresponding path program 5 times [2019-11-16 00:08:57,627 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-16 00:08:57,628 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1774266475] [2019-11-16 00:08:57,628 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:08:57,628 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:08:57,628 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-16 00:08:57,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:08:58,969 INFO L134 CoverageAnalysis]: Checked inductivity of 3552 backedges. 99 proven. 3453 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-16 00:08:58,969 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1774266475] [2019-11-16 00:08:58,970 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1156662748] [2019-11-16 00:08:58,970 INFO L92 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_efe00843-38f0-469f-800f-0021fb6096f6/bin/uautomizer/z3 Starting monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-16 00:08:59,179 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 34 check-sat command(s) [2019-11-16 00:08:59,179 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-16 00:08:59,180 INFO L256 TraceCheckSpWp]: Trace formula consists of 359 conjuncts, 19 conjunts are in the unsatisfiable core [2019-11-16 00:08:59,183 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-16 00:08:59,818 INFO L134 CoverageAnalysis]: Checked inductivity of 3552 backedges. 1604 proven. 376 refuted. 0 times theorem prover too weak. 1572 trivial. 0 not checked. [2019-11-16 00:08:59,818 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-16 00:08:59,819 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [56, 19] total 73 [2019-11-16 00:08:59,819 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1060153283] [2019-11-16 00:08:59,819 INFO L442 AbstractCegarLoop]: Interpolant automaton has 74 states [2019-11-16 00:08:59,819 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-16 00:08:59,820 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2019-11-16 00:08:59,820 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=729, Invalid=4673, Unknown=0, NotChecked=0, Total=5402 [2019-11-16 00:08:59,820 INFO L87 Difference]: Start difference. First operand 1198 states and 1386 transitions. Second operand 74 states. [2019-11-16 00:09:02,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-16 00:09:02,108 INFO L93 Difference]: Finished difference Result 2746 states and 3148 transitions. [2019-11-16 00:09:02,108 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2019-11-16 00:09:02,109 INFO L78 Accepts]: Start accepts. Automaton has 74 states. Word has length 171 [2019-11-16 00:09:02,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-16 00:09:02,112 INFO L225 Difference]: With dead ends: 2746 [2019-11-16 00:09:02,113 INFO L226 Difference]: Without dead ends: 1725 [2019-11-16 00:09:02,115 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 277 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 123 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4345 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=2745, Invalid=12755, Unknown=0, NotChecked=0, Total=15500 [2019-11-16 00:09:02,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1725 states. [2019-11-16 00:09:02,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1725 to 1289. [2019-11-16 00:09:02,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1289 states. [2019-11-16 00:09:02,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1289 states to 1289 states and 1484 transitions. [2019-11-16 00:09:02,248 INFO L78 Accepts]: Start accepts. Automaton has 1289 states and 1484 transitions. Word has length 171 [2019-11-16 00:09:02,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-16 00:09:02,248 INFO L462 AbstractCegarLoop]: Abstraction has 1289 states and 1484 transitions. [2019-11-16 00:09:02,248 INFO L463 AbstractCegarLoop]: Interpolant automaton has 74 states. [2019-11-16 00:09:02,248 INFO L276 IsEmpty]: Start isEmpty. Operand 1289 states and 1484 transitions. [2019-11-16 00:09:02,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2019-11-16 00:09:02,250 INFO L372 BasicCegarLoop]: Found error trace [2019-11-16 00:09:02,250 INFO L380 BasicCegarLoop]: trace histogram [51, 51, 48, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1] [2019-11-16 00:09:02,451 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-16 00:09:02,451 INFO L410 AbstractCegarLoop]: === Iteration 38 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-16 00:09:02,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-16 00:09:02,451 INFO L82 PathProgramCache]: Analyzing trace with hash -2038057369, now seen corresponding path program 6 times [2019-11-16 00:09:02,451 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-16 00:09:02,451 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1252002439] [2019-11-16 00:09:02,452 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:09:02,452 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:09:02,452 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-16 00:09:02,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:09:03,747 INFO L134 CoverageAnalysis]: Checked inductivity of 4002 backedges. 104 proven. 3898 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-16 00:09:03,748 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1252002439] [2019-11-16 00:09:03,748 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [480608948] [2019-11-16 00:09:03,748 INFO L92 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_efe00843-38f0-469f-800f-0021fb6096f6/bin/uautomizer/z3 Starting monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-16 00:09:03,922 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2019-11-16 00:09:03,922 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-16 00:09:03,923 INFO L256 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 19 conjunts are in the unsatisfiable core [2019-11-16 00:09:03,926 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-16 00:09:03,982 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-16 00:09:04,163 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-16 00:09:04,229 INFO L134 CoverageAnalysis]: Checked inductivity of 4002 backedges. 1867 proven. 1 refuted. 0 times theorem prover too weak. 2134 trivial. 0 not checked. [2019-11-16 00:09:04,230 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-16 00:09:04,230 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [59, 8] total 66 [2019-11-16 00:09:04,230 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [613274754] [2019-11-16 00:09:04,231 INFO L442 AbstractCegarLoop]: Interpolant automaton has 66 states [2019-11-16 00:09:04,231 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-16 00:09:04,231 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2019-11-16 00:09:04,232 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=614, Invalid=3676, Unknown=0, NotChecked=0, Total=4290 [2019-11-16 00:09:04,232 INFO L87 Difference]: Start difference. First operand 1289 states and 1484 transitions. Second operand 66 states. [2019-11-16 00:09:16,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-16 00:09:16,199 INFO L93 Difference]: Finished difference Result 2590 states and 2899 transitions. [2019-11-16 00:09:16,199 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 223 states. [2019-11-16 00:09:16,199 INFO L78 Accepts]: Start accepts. Automaton has 66 states. Word has length 180 [2019-11-16 00:09:16,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-16 00:09:16,199 INFO L225 Difference]: With dead ends: 2590 [2019-11-16 00:09:16,200 INFO L226 Difference]: Without dead ends: 0 [2019-11-16 00:09:16,205 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 460 GetRequests, 176 SyntacticMatches, 0 SemanticMatches, 284 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30690 ImplicationChecksByTransitivity, 11.3s TimeCoverageRelationStatistics Valid=21024, Invalid=60486, Unknown=0, NotChecked=0, Total=81510 [2019-11-16 00:09:16,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-16 00:09:16,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-16 00:09:16,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-16 00:09:16,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-16 00:09:16,206 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 180 [2019-11-16 00:09:16,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-16 00:09:16,206 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-16 00:09:16,206 INFO L463 AbstractCegarLoop]: Interpolant automaton has 66 states. [2019-11-16 00:09:16,206 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-16 00:09:16,206 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-16 00:09:16,407 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-16 00:09:16,410 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-11-16 00:11:28,953 WARN L191 SmtUtils]: Spent 2.21 m on a formula simplification. DAG size of input: 5970 DAG size of output: 4904 [2019-11-16 00:11:30,965 WARN L191 SmtUtils]: Spent 2.00 s on a formula simplification. DAG size of input: 731 DAG size of output: 563 [2019-11-16 00:15:23,919 WARN L191 SmtUtils]: Spent 3.88 m on a formula simplification. DAG size of input: 4684 DAG size of output: 194 [2019-11-16 00:15:26,839 WARN L191 SmtUtils]: Spent 2.92 s on a formula simplification. DAG size of input: 558 DAG size of output: 32 [2019-11-16 00:15:26,841 INFO L443 ceAbstractionStarter]: For program point L31(lines 31 33) no Hoare annotation was computed. [2019-11-16 00:15:26,841 INFO L443 ceAbstractionStarter]: For program point L31-2(lines 20 40) no Hoare annotation was computed. [2019-11-16 00:15:26,841 INFO L443 ceAbstractionStarter]: For program point L23(line 23) no Hoare annotation was computed. [2019-11-16 00:15:26,841 INFO L443 ceAbstractionStarter]: For program point L7(line 7) no Hoare annotation was computed. [2019-11-16 00:15:26,841 INFO L443 ceAbstractionStarter]: For program point L-1(line -1) no Hoare annotation was computed. [2019-11-16 00:15:26,841 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2019-11-16 00:15:26,841 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-11-16 00:15:26,841 INFO L443 ceAbstractionStarter]: For program point L20-2(lines 20 40) no Hoare annotation was computed. [2019-11-16 00:15:26,842 INFO L439 ceAbstractionStarter]: At program point L41(lines 15 42) the Hoare annotation is: false [2019-11-16 00:15:26,842 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-11-16 00:15:26,842 INFO L443 ceAbstractionStarter]: For program point L25-1(lines 20 40) no Hoare annotation was computed. [2019-11-16 00:15:26,842 INFO L443 ceAbstractionStarter]: For program point L34-1(lines 34 37) no Hoare annotation was computed. [2019-11-16 00:15:26,842 INFO L443 ceAbstractionStarter]: For program point L22-2(lines 22 24) no Hoare annotation was computed. [2019-11-16 00:15:26,843 INFO L439 ceAbstractionStarter]: At program point L22-3(lines 22 24) the Hoare annotation is: (let ((.cse9 (<= 1 ULTIMATE.start_main_~st~0)) (.cse15 (<= 1 ~last~0)) (.cse11 (<= 200000 ~SIZE~0))) (let ((.cse2 (and .cse9 .cse15 .cse11)) (.cse12 (<= ULTIMATE.start_main_~d~0 0))) (let ((.cse31 (and .cse2 .cse12))) (let ((.cse24 (and .cse31 (not (= 0 ULTIMATE.start___VERIFIER_assert_~cond)))) (.cse5 (<= ULTIMATE.start_main_~c~0 ~last~0))) (let ((.cse13 (= ULTIMATE.start_main_~b~0 0)) (.cse8 (and .cse24 .cse5)) (.cse30 (<= 9 ULTIMATE.start_main_~c~0)) (.cse34 (<= 10 ULTIMATE.start_main_~c~0)) (.cse17 (= ULTIMATE.start_main_~st~0 0)) (.cse3 (<= ~last~0 7)) (.cse4 (= ULTIMATE.start_main_~st~0 1)) (.cse25 (<= ULTIMATE.start_main_~c~0 5)) (.cse22 (<= 5 ULTIMATE.start_main_~c~0)) (.cse35 (<= 8 ULTIMATE.start_main_~c~0)) (.cse36 (<= ULTIMATE.start_main_~c~0 8)) (.cse1 (<= ULTIMATE.start_main_~d~0 1)) (.cse19 (<= ULTIMATE.start_main_~c~0 2)) (.cse16 (<= (+ ~last~0 1) ULTIMATE.start_main_~c~0)) (.cse21 (<= 6 ULTIMATE.start_main_~c~0)) (.cse32 (<= 4 ULTIMATE.start_main_~c~0)) (.cse33 (<= ULTIMATE.start_main_~c~0 4)) (.cse29 (<= 1 ULTIMATE.start_main_~c~0)) (.cse37 (and (<= ULTIMATE.start_main_~c~0 1) .cse9 .cse15)) (.cse38 (* 3 ULTIMATE.start_main_~c~0)) (.cse20 (* 2 ~SIZE~0)) (.cse18 (<= 2 ULTIMATE.start_main_~c~0)) (.cse39 (<= 7 ULTIMATE.start_main_~c~0)) (.cse28 (<= 0 ULTIMATE.start_main_~c~0)) (.cse7 (= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse27 (<= ULTIMATE.start_main_~c~0 0)) (.cse26 (<= 11 ULTIMATE.start_main_~c~0)) (.cse23 (<= ULTIMATE.start_main_~c~0 ~SIZE~0)) (.cse14 (= ULTIMATE.start_main_~a~0 0)) (.cse0 (<= 3 ULTIMATE.start_main_~c~0)) (.cse6 (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~a~0)) (.cse10 (<= ULTIMATE.start_main_~c~0 3))) (or (and .cse0 (and (and .cse1 .cse2 .cse3) .cse4 .cse5) .cse6 .cse7) (and .cse6 .cse7 .cse8 (<= ULTIMATE.start_main_~c~0 13) (<= 13 ULTIMATE.start_main_~c~0)) (and .cse0 .cse6 .cse7 (and (and (and .cse9 .cse10 .cse11) .cse12) .cse5)) (and .cse13 .cse14 (< ULTIMATE.start_main_~c~0 (+ ~SIZE~0 1)) .cse15 .cse16 .cse11 .cse17 .cse12) (and .cse6 .cse18 .cse7 (and (and (and .cse9 .cse19 .cse11) .cse12) .cse5)) (and .cse15 .cse19 .cse12 .cse13 .cse14 (<= (+ (* 2 ~last~0) 400000) (+ ULTIMATE.start_main_~c~0 .cse20)) .cse16) (and (and .cse4 (and .cse19 (and .cse1 .cse2) .cse3)) .cse6 .cse18 .cse7) (and .cse8 .cse6 .cse21 .cse7 (<= ULTIMATE.start_main_~c~0 6)) (and .cse14 .cse6 .cse22 .cse9 .cse5 (<= (+ ULTIMATE.start_main_~c~0 199995) ~SIZE~0) .cse12) (and .cse6 .cse7 (and (= ULTIMATE.start_main_~c~0 0) .cse4 (and (and .cse1 (<= (+ ULTIMATE.start_main_~c~0 200000) ~SIZE~0) .cse15) .cse3))) (and .cse6 .cse23 .cse8 .cse7 (<= 14 ULTIMATE.start_main_~c~0)) (and .cse6 .cse23 (and (and .cse1 .cse15 .cse16 .cse17) .cse3) .cse7 .cse11) (and (<= 12 ULTIMATE.start_main_~c~0) (and .cse24 (<= ULTIMATE.start_main_~c~0 12) .cse5) .cse6 .cse7) (and .cse6 .cse7 (and (and (<= ~last~0 5) (and .cse1 .cse2 .cse25)) .cse22)) (and .cse26 .cse6 .cse7 (and (<= ULTIMATE.start_main_~c~0 11) .cse24 .cse5)) (and .cse14 .cse6 .cse15 .cse9 .cse27 (<= (+ ULTIMATE.start_main_~c~0 400000) .cse20) .cse28 .cse12) (and .cse14 .cse6 .cse9 (<= (+ ULTIMATE.start_main_~c~0 199999) ~SIZE~0) .cse29 .cse5 .cse12) (and .cse14 .cse6 .cse30 .cse9 .cse23 (<= (+ ULTIMATE.start_main_~c~0 399991) .cse20) .cse5 .cse12) (and (and .cse24 .cse5 (<= ULTIMATE.start_main_~c~0 9)) .cse6 .cse30 .cse7) (and .cse6 (and .cse31 .cse5) .cse7 .cse32 .cse33) (and .cse14 .cse6 .cse9 .cse23 (<= (+ ULTIMATE.start_main_~c~0 399990) .cse20) .cse34 .cse5 .cse12) (and .cse6 (and .cse24 .cse5 (<= ULTIMATE.start_main_~c~0 10)) .cse7 .cse34) (and (and .cse15 .cse16 .cse17 .cse12) .cse6 .cse23 .cse7 .cse11) (and .cse6 .cse7 .cse35 .cse36 .cse5 .cse31) (and .cse6 (and (and (and .cse1 .cse37) .cse3) .cse4) .cse7 .cse29 .cse11) (and .cse6 (and .cse25 .cse2 .cse12) .cse7 .cse22) (and .cse14 .cse6 .cse9 (<= (+ ULTIMATE.start_main_~c~0 399992) .cse20) .cse35 .cse36 .cse5 .cse12) (and .cse6 (and (and .cse1 (and .cse19 .cse15 .cse16)) (<= (+ .cse38 399994) .cse20)) .cse7) (and .cse14 .cse6 .cse21 .cse9 (<= (+ ULTIMATE.start_main_~c~0 199994) ~SIZE~0) .cse5 .cse12) (and .cse14 .cse6 .cse9 (<= (+ ULTIMATE.start_main_~c~0 399996) .cse20) .cse32 .cse5 .cse33 .cse12) (and .cse6 .cse7 .cse29 (and .cse37 .cse11 .cse12)) (and .cse14 .cse6 .cse9 .cse39 (<= (+ .cse38 399979) .cse20) .cse5 .cse12) (and .cse14 .cse6 (<= (+ ULTIMATE.start_main_~c~0 199998) ~SIZE~0) .cse9 .cse18 .cse5 .cse12) (and (and (<= ULTIMATE.start_main_~c~0 7) .cse5 .cse31) .cse6 .cse7 .cse39) (and .cse6 .cse28 .cse7 (and .cse9 .cse27 .cse15 .cse11 .cse12)) (and .cse14 .cse26 .cse6 .cse11 .cse9 .cse23 .cse5 .cse12) (and .cse14 .cse0 .cse6 .cse11 .cse9 .cse10 .cse5 .cse12))))))) [2019-11-16 00:15:26,843 INFO L443 ceAbstractionStarter]: For program point L22-4(lines 20 40) no Hoare annotation was computed. [2019-11-16 00:15:26,844 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 7) no Hoare annotation was computed. [2019-11-16 00:15:26,844 INFO L443 ceAbstractionStarter]: For program point L6(lines 6 8) no Hoare annotation was computed. [2019-11-16 00:15:26,844 INFO L439 ceAbstractionStarter]: At program point L6-2(lines 5 40) the Hoare annotation is: (let ((.cse5 (<= 200000 ~SIZE~0)) (.cse3 (<= ULTIMATE.start_main_~d~0 0)) (.cse0 (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~a~0)) (.cse1 (<= ULTIMATE.start_main_~c~0 ~SIZE~0)) (.cse4 (= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse2 (<= 1 ~last~0)) (.cse6 (<= ~SIZE~0 ULTIMATE.start_main_~c~0))) (or (and .cse0 .cse1 (and .cse2 .cse3) .cse4 .cse5 .cse6) (and (= ULTIMATE.start_main_~a~0 0) (<= ULTIMATE.start_main_~c~0 0) .cse0 (<= 0 ULTIMATE.start_main_~c~0) .cse5 (< ULTIMATE.start_main_~c~0 ~last~0) .cse3) (and .cse0 .cse1 .cse4 (and (and (<= ULTIMATE.start_main_~d~0 1) .cse2) (<= 200000 ULTIMATE.start_main_~c~0) (<= ~last~0 7)) .cse6))) [2019-11-16 00:15:26,890 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.11 12:15:26 BoogieIcfgContainer [2019-11-16 00:15:26,890 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-16 00:15:26,891 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-16 00:15:26,891 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-16 00:15:26,891 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-16 00:15:26,891 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:07:12" (3/4) ... [2019-11-16 00:15:26,894 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-11-16 00:15:26,903 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2019-11-16 00:15:26,904 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2019-11-16 00:15:26,950 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_efe00843-38f0-469f-800f-0021fb6096f6/bin/uautomizer/witness.graphml [2019-11-16 00:15:26,950 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-16 00:15:26,951 INFO L168 Benchmark]: Toolchain (without parser) took 495012.45 ms. Allocated memory was 1.0 GB in the beginning and 2.9 GB in the end (delta: 1.9 GB). Free memory was 950.1 MB in the beginning and 1.4 GB in the end (delta: -455.5 MB). Peak memory consumption was 1.5 GB. Max. memory is 11.5 GB. [2019-11-16 00:15:26,951 INFO L168 Benchmark]: CDTParser took 0.47 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-16 00:15:26,952 INFO L168 Benchmark]: CACSL2BoogieTranslator took 384.22 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 131.1 MB). Free memory was 950.1 MB in the beginning and 1.1 GB in the end (delta: -178.4 MB). Peak memory consumption was 23.4 MB. Max. memory is 11.5 GB. [2019-11-16 00:15:26,952 INFO L168 Benchmark]: Boogie Procedure Inliner took 42.12 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-16 00:15:26,953 INFO L168 Benchmark]: Boogie Preprocessor took 19.78 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2019-11-16 00:15:26,953 INFO L168 Benchmark]: RCFGBuilder took 273.34 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 18.4 MB). Peak memory consumption was 18.4 MB. Max. memory is 11.5 GB. [2019-11-16 00:15:26,954 INFO L168 Benchmark]: TraceAbstraction took 494229.14 ms. Allocated memory was 1.2 GB in the beginning and 2.9 GB in the end (delta: 1.8 GB). Free memory was 1.1 GB in the beginning and 1.4 GB in the end (delta: -311.3 MB). Peak memory consumption was 4.5 GB. Max. memory is 11.5 GB. [2019-11-16 00:15:26,954 INFO L168 Benchmark]: Witness Printer took 59.44 ms. Allocated memory is still 2.9 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 13.2 MB). Peak memory consumption was 13.2 MB. Max. memory is 11.5 GB. [2019-11-16 00:15:26,956 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.47 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 384.22 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 131.1 MB). Free memory was 950.1 MB in the beginning and 1.1 GB in the end (delta: -178.4 MB). Peak memory consumption was 23.4 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 42.12 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 19.78 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 273.34 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 18.4 MB). Peak memory consumption was 18.4 MB. Max. memory is 11.5 GB. * TraceAbstraction took 494229.14 ms. Allocated memory was 1.2 GB in the beginning and 2.9 GB in the end (delta: 1.8 GB). Free memory was 1.1 GB in the beginning and 1.4 GB in the end (delta: -311.3 MB). Peak memory consumption was 4.5 GB. Max. memory is 11.5 GB. * Witness Printer took 59.44 ms. Allocated memory is still 2.9 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 13.2 MB). Peak memory consumption was 13.2 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 7]: 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: 22]: Loop Invariant Derived loop invariant: ((((((((((((((((((((((((((((((((((((((3 <= c && (((d <= 1 && (1 <= st && 1 <= last) && 200000 <= SIZE) && last <= 7) && st == 1) && c <= last) && b == a) && 1 == cond) || ((((b == a && 1 == cond) && ((((1 <= st && 1 <= last) && 200000 <= SIZE) && d <= 0) && !(0 == cond)) && c <= last) && c <= 13) && 13 <= c)) || (((3 <= c && b == a) && 1 == cond) && (((1 <= st && c <= 3) && 200000 <= SIZE) && d <= 0) && c <= last)) || (((((((b == 0 && a == 0) && c < SIZE + 1) && 1 <= last) && last + 1 <= c) && 200000 <= SIZE) && st == 0) && d <= 0)) || (((b == a && 2 <= c) && 1 == cond) && (((1 <= st && c <= 2) && 200000 <= SIZE) && d <= 0) && c <= last)) || ((((((1 <= last && c <= 2) && d <= 0) && b == 0) && a == 0) && 2 * last + 400000 <= c + 2 * SIZE) && last + 1 <= c)) || ((((st == 1 && (c <= 2 && d <= 1 && (1 <= st && 1 <= last) && 200000 <= SIZE) && last <= 7) && b == a) && 2 <= c) && 1 == cond)) || (((((((((1 <= st && 1 <= last) && 200000 <= SIZE) && d <= 0) && !(0 == cond)) && c <= last) && b == a) && 6 <= c) && 1 == cond) && c <= 6)) || ((((((a == 0 && b == a) && 5 <= c) && 1 <= st) && c <= last) && c + 199995 <= SIZE) && d <= 0)) || ((b == a && 1 == cond) && (c == 0 && st == 1) && ((d <= 1 && c + 200000 <= SIZE) && 1 <= last) && last <= 7)) || ((((b == a && c <= SIZE) && ((((1 <= st && 1 <= last) && 200000 <= SIZE) && d <= 0) && !(0 == cond)) && c <= last) && 1 == cond) && 14 <= c)) || ((((b == a && c <= SIZE) && (((d <= 1 && 1 <= last) && last + 1 <= c) && st == 0) && last <= 7) && 1 == cond) && 200000 <= SIZE)) || (((12 <= c && (((((1 <= st && 1 <= last) && 200000 <= SIZE) && d <= 0) && !(0 == cond)) && c <= 12) && c <= last) && b == a) && 1 == cond)) || ((b == a && 1 == cond) && (last <= 5 && (d <= 1 && (1 <= st && 1 <= last) && 200000 <= SIZE) && c <= 5) && 5 <= c)) || (((11 <= c && b == a) && 1 == cond) && (c <= 11 && (((1 <= st && 1 <= last) && 200000 <= SIZE) && d <= 0) && !(0 == cond)) && c <= last)) || (((((((a == 0 && b == a) && 1 <= last) && 1 <= st) && c <= 0) && c + 400000 <= 2 * SIZE) && 0 <= c) && d <= 0)) || ((((((a == 0 && b == a) && 1 <= st) && c + 199999 <= SIZE) && 1 <= c) && c <= last) && d <= 0)) || (((((((a == 0 && b == a) && 9 <= c) && 1 <= st) && c <= SIZE) && c + 399991 <= 2 * SIZE) && c <= last) && d <= 0)) || (((((((((1 <= st && 1 <= last) && 200000 <= SIZE) && d <= 0) && !(0 == cond)) && c <= last) && c <= 9) && b == a) && 9 <= c) && 1 == cond)) || ((((b == a && (((1 <= st && 1 <= last) && 200000 <= SIZE) && d <= 0) && c <= last) && 1 == cond) && 4 <= c) && c <= 4)) || (((((((a == 0 && b == a) && 1 <= st) && c <= SIZE) && c + 399990 <= 2 * SIZE) && 10 <= c) && c <= last) && d <= 0)) || (((b == a && (((((1 <= st && 1 <= last) && 200000 <= SIZE) && d <= 0) && !(0 == cond)) && c <= last) && c <= 10) && 1 == cond) && 10 <= c)) || (((((((1 <= last && last + 1 <= c) && st == 0) && d <= 0) && b == a) && c <= SIZE) && 1 == cond) && 200000 <= SIZE)) || (((((b == a && 1 == cond) && 8 <= c) && c <= 8) && c <= last) && ((1 <= st && 1 <= last) && 200000 <= SIZE) && d <= 0)) || ((((b == a && ((d <= 1 && (c <= 1 && 1 <= st) && 1 <= last) && last <= 7) && st == 1) && 1 == cond) && 1 <= c) && 200000 <= SIZE)) || (((b == a && (c <= 5 && (1 <= st && 1 <= last) && 200000 <= SIZE) && d <= 0) && 1 == cond) && 5 <= c)) || (((((((a == 0 && b == a) && 1 <= st) && c + 399992 <= 2 * SIZE) && 8 <= c) && c <= 8) && c <= last) && d <= 0)) || ((b == a && (d <= 1 && (c <= 2 && 1 <= last) && last + 1 <= c) && 3 * c + 399994 <= 2 * SIZE) && 1 == cond)) || ((((((a == 0 && b == a) && 6 <= c) && 1 <= st) && c + 199994 <= SIZE) && c <= last) && d <= 0)) || (((((((a == 0 && b == a) && 1 <= st) && c + 399996 <= 2 * SIZE) && 4 <= c) && c <= last) && c <= 4) && d <= 0)) || (((b == a && 1 == cond) && 1 <= c) && (((c <= 1 && 1 <= st) && 1 <= last) && 200000 <= SIZE) && d <= 0)) || ((((((a == 0 && b == a) && 1 <= st) && 7 <= c) && 3 * c + 399979 <= 2 * SIZE) && c <= last) && d <= 0)) || ((((((a == 0 && b == a) && c + 199998 <= SIZE) && 1 <= st) && 2 <= c) && c <= last) && d <= 0)) || (((((c <= 7 && c <= last) && ((1 <= st && 1 <= last) && 200000 <= SIZE) && d <= 0) && b == a) && 1 == cond) && 7 <= c)) || (((b == a && 0 <= c) && 1 == cond) && (((1 <= st && c <= 0) && 1 <= last) && 200000 <= SIZE) && d <= 0)) || (((((((a == 0 && 11 <= c) && b == a) && 200000 <= SIZE) && 1 <= st) && c <= SIZE) && c <= last) && d <= 0)) || (((((((a == 0 && 3 <= c) && b == a) && 200000 <= SIZE) && 1 <= st) && c <= 3) && c <= last) && d <= 0) - InvariantResult [Line: 15]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 5]: Loop Invariant Derived loop invariant: ((((((b == a && c <= SIZE) && 1 <= last && d <= 0) && 1 == cond) && 200000 <= SIZE) && SIZE <= c) || ((((((a == 0 && c <= 0) && b == a) && 0 <= c) && 200000 <= SIZE) && c < last) && d <= 0)) || ((((b == a && c <= SIZE) && 1 == cond) && ((d <= 1 && 1 <= last) && 200000 <= c) && last <= 7) && SIZE <= c) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 18 locations, 1 error locations. Result: SAFE, OverallTime: 494.1s, OverallIterations: 38, TraceHistogramMax: 51, AutomataDifference: 89.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 370.4s, HoareTripleCheckerStatistics: 524 SDtfs, 12427 SDslu, 3036 SDs, 0 SdLazy, 29661 SolverSat, 4517 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 16.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 5212 GetRequests, 2065 SyntacticMatches, 1 SemanticMatches, 3146 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 184289 ImplicationChecksByTransitivity, 86.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1289occurred in iteration=37, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.7s AutomataMinimizationTime, 38 MinimizatonAttempts, 12594 StatesRemovedByMinimization, 37 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 1075 NumberOfFragments, 1194 HoareAnnotationTreeSize, 3 FomulaSimplifications, 50723571251165 FormulaSimplificationTreeSizeReduction, 134.5s HoareSimplificationTime, 3 FomulaSimplificationsInter, 1703590241979 FormulaSimplificationTreeSizeReductionInter, 235.8s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.9s SatisfiabilityAnalysisTime, 21.8s InterpolantComputationTime, 4680 NumberOfCodeBlocks, 4101 NumberOfCodeBlocksAsserted, 143 NumberOfCheckSat, 4610 ConstructedInterpolants, 0 QuantifiedInterpolants, 2746438 SizeOfPredicates, 128 NumberOfNonLiveVariables, 3777 ConjunctsInSsa, 447 ConjunctsInUnsatCore, 70 InterpolantComputations, 11 PerfectInterpolantSequences, 20494/50292 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...