./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem01_label00.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_018976d1-a4ad-46f8-8dcc-921a862e2833/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_018976d1-a4ad-46f8-8dcc-921a862e2833/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_018976d1-a4ad-46f8-8dcc-921a862e2833/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_018976d1-a4ad-46f8-8dcc-921a862e2833/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem01_label00.c -s /tmp/vcloud-vcloud-master/worker/run_dir_018976d1-a4ad-46f8-8dcc-921a862e2833/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_018976d1-a4ad-46f8-8dcc-921a862e2833/bin/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash aa303202e206e0417727207f0e09817a035cbfbb ..................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-29 20:11:45,716 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-29 20:11:45,720 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-29 20:11:45,826 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-29 20:11:45,830 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-29 20:11:45,837 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-29 20:11:45,839 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-29 20:11:45,845 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-29 20:11:45,849 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-29 20:11:45,856 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-29 20:11:45,858 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-29 20:11:45,861 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-29 20:11:45,861 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-29 20:11:45,862 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-29 20:11:45,864 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-29 20:11:45,865 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-29 20:11:45,866 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-29 20:11:45,867 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-29 20:11:45,870 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-29 20:11:45,873 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-29 20:11:45,875 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-29 20:11:45,878 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-29 20:11:45,881 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-29 20:11:45,883 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-29 20:11:45,888 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-29 20:11:45,889 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-29 20:11:45,889 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-29 20:11:45,891 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-29 20:11:45,897 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-29 20:11:45,899 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-29 20:11:45,900 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-29 20:11:45,902 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-29 20:11:45,904 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-29 20:11:45,906 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-29 20:11:45,908 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-29 20:11:45,909 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-29 20:11:45,910 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-29 20:11:45,910 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-29 20:11:45,911 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-29 20:11:45,912 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-29 20:11:45,913 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-29 20:11:45,917 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_018976d1-a4ad-46f8-8dcc-921a862e2833/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-29 20:11:45,966 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-29 20:11:45,967 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-29 20:11:45,970 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-29 20:11:45,970 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-29 20:11:45,971 INFO L138 SettingsManager]: * Use SBE=true [2020-11-29 20:11:45,971 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-29 20:11:45,971 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-29 20:11:45,972 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-29 20:11:45,972 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-29 20:11:45,972 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-29 20:11:45,974 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-29 20:11:45,974 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-29 20:11:45,975 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-29 20:11:45,975 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-29 20:11:45,975 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-29 20:11:45,975 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-29 20:11:45,976 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-29 20:11:45,976 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-29 20:11:45,976 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-29 20:11:45,977 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-29 20:11:45,977 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-29 20:11:45,977 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-29 20:11:45,978 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-29 20:11:45,978 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-29 20:11:45,978 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-29 20:11:45,979 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-29 20:11:45,979 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-29 20:11:45,979 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-29 20:11:45,980 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-29 20:11:45,980 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud-vcloud-master/worker/run_dir_018976d1-a4ad-46f8-8dcc-921a862e2833/bin/uautomizer/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_018976d1-a4ad-46f8-8dcc-921a862e2833/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> aa303202e206e0417727207f0e09817a035cbfbb [2020-11-29 20:11:46,312 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-29 20:11:46,346 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-29 20:11:46,350 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-29 20:11:46,352 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-29 20:11:46,353 INFO L275 PluginConnector]: CDTParser initialized [2020-11-29 20:11:46,355 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_018976d1-a4ad-46f8-8dcc-921a862e2833/bin/uautomizer/../../sv-benchmarks/c/eca-rers2012/Problem01_label00.c [2020-11-29 20:11:46,459 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_018976d1-a4ad-46f8-8dcc-921a862e2833/bin/uautomizer/data/c89d12c6f/f980b79513d546dd9649822348c5a210/FLAGaac35fe58 [2020-11-29 20:11:47,262 INFO L306 CDTParser]: Found 1 translation units. [2020-11-29 20:11:47,263 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_018976d1-a4ad-46f8-8dcc-921a862e2833/sv-benchmarks/c/eca-rers2012/Problem01_label00.c [2020-11-29 20:11:47,277 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_018976d1-a4ad-46f8-8dcc-921a862e2833/bin/uautomizer/data/c89d12c6f/f980b79513d546dd9649822348c5a210/FLAGaac35fe58 [2020-11-29 20:11:47,491 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_018976d1-a4ad-46f8-8dcc-921a862e2833/bin/uautomizer/data/c89d12c6f/f980b79513d546dd9649822348c5a210 [2020-11-29 20:11:47,494 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-29 20:11:47,495 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-29 20:11:47,513 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-29 20:11:47,513 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-29 20:11:47,517 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-29 20:11:47,518 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 08:11:47" (1/1) ... [2020-11-29 20:11:47,520 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@487400d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:11:47, skipping insertion in model container [2020-11-29 20:11:47,521 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 08:11:47" (1/1) ... [2020-11-29 20:11:47,529 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-29 20:11:47,579 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-29 20:11:48,058 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 20:11:48,090 INFO L203 MainTranslator]: Completed pre-run [2020-11-29 20:11:48,250 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 20:11:48,278 INFO L208 MainTranslator]: Completed translation [2020-11-29 20:11:48,279 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:11:48 WrapperNode [2020-11-29 20:11:48,279 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-29 20:11:48,281 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-29 20:11:48,281 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-29 20:11:48,281 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-29 20:11:48,288 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:11:48" (1/1) ... [2020-11-29 20:11:48,313 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:11:48" (1/1) ... [2020-11-29 20:11:48,390 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-29 20:11:48,391 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-29 20:11:48,391 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-29 20:11:48,391 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-29 20:11:48,402 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:11:48" (1/1) ... [2020-11-29 20:11:48,402 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:11:48" (1/1) ... [2020-11-29 20:11:48,408 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:11:48" (1/1) ... [2020-11-29 20:11:48,414 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:11:48" (1/1) ... [2020-11-29 20:11:48,456 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:11:48" (1/1) ... [2020-11-29 20:11:48,486 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:11:48" (1/1) ... [2020-11-29 20:11:48,491 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:11:48" (1/1) ... [2020-11-29 20:11:48,529 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-29 20:11:48,530 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-29 20:11:48,530 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-29 20:11:48,531 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-29 20:11:48,532 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:11:48" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_018976d1-a4ad-46f8-8dcc-921a862e2833/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 [2020-11-29 20:11:48,620 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-29 20:11:48,621 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-29 20:11:48,621 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-29 20:11:48,621 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-29 20:11:50,289 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-29 20:11:50,290 INFO L298 CfgBuilder]: Removed 9 assume(true) statements. [2020-11-29 20:11:50,294 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 08:11:50 BoogieIcfgContainer [2020-11-29 20:11:50,295 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-29 20:11:50,296 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-29 20:11:50,297 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-29 20:11:50,301 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-29 20:11:50,302 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 08:11:47" (1/3) ... [2020-11-29 20:11:50,302 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b19772f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 08:11:50, skipping insertion in model container [2020-11-29 20:11:50,303 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:11:48" (2/3) ... [2020-11-29 20:11:50,303 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b19772f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 08:11:50, skipping insertion in model container [2020-11-29 20:11:50,303 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 08:11:50" (3/3) ... [2020-11-29 20:11:50,305 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem01_label00.c [2020-11-29 20:11:50,317 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-29 20:11:50,323 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-29 20:11:50,336 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-29 20:11:50,395 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-29 20:11:50,395 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-29 20:11:50,395 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-29 20:11:50,395 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-29 20:11:50,395 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-29 20:11:50,396 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-29 20:11:50,396 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-29 20:11:50,396 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-29 20:11:50,429 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states. [2020-11-29 20:11:50,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-11-29 20:11:50,441 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:11:50,442 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 20:11:50,442 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 20:11:50,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:11:50,450 INFO L82 PathProgramCache]: Analyzing trace with hash -1766677921, now seen corresponding path program 1 times [2020-11-29 20:11:50,460 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:11:50,461 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2146290399] [2020-11-29 20:11:50,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:11:50,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:11:51,257 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 20:11:51,259 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2146290399] [2020-11-29 20:11:51,260 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 20:11:51,260 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 20:11:51,261 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2130769369] [2020-11-29 20:11:51,269 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-29 20:11:51,270 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:11:51,287 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-29 20:11:51,288 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-11-29 20:11:51,290 INFO L87 Difference]: Start difference. First operand 199 states. Second operand 5 states. [2020-11-29 20:11:53,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:11:53,502 INFO L93 Difference]: Finished difference Result 663 states and 1179 transitions. [2020-11-29 20:11:53,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-29 20:11:53,504 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 108 [2020-11-29 20:11:53,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:11:53,522 INFO L225 Difference]: With dead ends: 663 [2020-11-29 20:11:53,522 INFO L226 Difference]: Without dead ends: 397 [2020-11-29 20:11:53,528 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-11-29 20:11:53,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 397 states. [2020-11-29 20:11:53,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 397 to 397. [2020-11-29 20:11:53,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 397 states. [2020-11-29 20:11:53,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 397 states to 397 states and 517 transitions. [2020-11-29 20:11:53,610 INFO L78 Accepts]: Start accepts. Automaton has 397 states and 517 transitions. Word has length 108 [2020-11-29 20:11:53,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:11:53,611 INFO L481 AbstractCegarLoop]: Abstraction has 397 states and 517 transitions. [2020-11-29 20:11:53,611 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-29 20:11:53,611 INFO L276 IsEmpty]: Start isEmpty. Operand 397 states and 517 transitions. [2020-11-29 20:11:53,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2020-11-29 20:11:53,618 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:11:53,618 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 20:11:53,619 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-29 20:11:53,619 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 20:11:53,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:11:53,620 INFO L82 PathProgramCache]: Analyzing trace with hash 1024587764, now seen corresponding path program 1 times [2020-11-29 20:11:53,620 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:11:53,621 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1723455999] [2020-11-29 20:11:53,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:11:53,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:11:54,019 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 20:11:54,019 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1723455999] [2020-11-29 20:11:54,020 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 20:11:54,020 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-29 20:11:54,020 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1551754170] [2020-11-29 20:11:54,022 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 20:11:54,022 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:11:54,024 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 20:11:54,025 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-29 20:11:54,026 INFO L87 Difference]: Start difference. First operand 397 states and 517 transitions. Second operand 4 states. [2020-11-29 20:11:55,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:11:55,155 INFO L93 Difference]: Finished difference Result 1018 states and 1433 transitions. [2020-11-29 20:11:55,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 20:11:55,160 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 115 [2020-11-29 20:11:55,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:11:55,165 INFO L225 Difference]: With dead ends: 1018 [2020-11-29 20:11:55,165 INFO L226 Difference]: Without dead ends: 659 [2020-11-29 20:11:55,168 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-29 20:11:55,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 659 states. [2020-11-29 20:11:55,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 659 to 528. [2020-11-29 20:11:55,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 528 states. [2020-11-29 20:11:55,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 528 states to 528 states and 609 transitions. [2020-11-29 20:11:55,217 INFO L78 Accepts]: Start accepts. Automaton has 528 states and 609 transitions. Word has length 115 [2020-11-29 20:11:55,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:11:55,217 INFO L481 AbstractCegarLoop]: Abstraction has 528 states and 609 transitions. [2020-11-29 20:11:55,217 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 20:11:55,218 INFO L276 IsEmpty]: Start isEmpty. Operand 528 states and 609 transitions. [2020-11-29 20:11:55,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2020-11-29 20:11:55,237 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:11:55,238 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 20:11:55,239 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-29 20:11:55,239 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 20:11:55,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:11:55,240 INFO L82 PathProgramCache]: Analyzing trace with hash 1226566025, now seen corresponding path program 1 times [2020-11-29 20:11:55,241 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:11:55,242 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [553401745] [2020-11-29 20:11:55,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:11:55,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:11:55,383 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 11 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 20:11:55,384 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [553401745] [2020-11-29 20:11:55,384 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1545716930] [2020-11-29 20:11:55,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_018976d1-a4ad-46f8-8dcc-921a862e2833/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 [2020-11-29 20:11:55,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:11:55,532 INFO L263 TraceCheckSpWp]: Trace formula consists of 266 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-29 20:11:55,542 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 20:11:55,736 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-11-29 20:11:55,737 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-11-29 20:11:55,737 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2020-11-29 20:11:55,738 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [525850729] [2020-11-29 20:11:55,738 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-29 20:11:55,739 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:11:55,739 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-29 20:11:55,740 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-29 20:11:55,740 INFO L87 Difference]: Start difference. First operand 528 states and 609 transitions. Second operand 3 states. [2020-11-29 20:11:56,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:11:56,731 INFO L93 Difference]: Finished difference Result 1578 states and 1822 transitions. [2020-11-29 20:11:56,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-29 20:11:56,732 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 120 [2020-11-29 20:11:56,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:11:56,738 INFO L225 Difference]: With dead ends: 1578 [2020-11-29 20:11:56,746 INFO L226 Difference]: Without dead ends: 790 [2020-11-29 20:11:56,748 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-29 20:11:56,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 790 states. [2020-11-29 20:11:56,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 790 to 790. [2020-11-29 20:11:56,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 790 states. [2020-11-29 20:11:56,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 790 states to 790 states and 907 transitions. [2020-11-29 20:11:56,803 INFO L78 Accepts]: Start accepts. Automaton has 790 states and 907 transitions. Word has length 120 [2020-11-29 20:11:56,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:11:56,804 INFO L481 AbstractCegarLoop]: Abstraction has 790 states and 907 transitions. [2020-11-29 20:11:56,804 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-29 20:11:56,804 INFO L276 IsEmpty]: Start isEmpty. Operand 790 states and 907 transitions. [2020-11-29 20:11:56,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2020-11-29 20:11:56,810 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:11:56,811 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 20:11:57,036 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2020-11-29 20:11:57,037 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 20:11:57,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:11:57,038 INFO L82 PathProgramCache]: Analyzing trace with hash 1215252592, now seen corresponding path program 1 times [2020-11-29 20:11:57,038 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:11:57,038 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1073770274] [2020-11-29 20:11:57,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:11:57,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:11:57,183 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 20:11:57,184 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1073770274] [2020-11-29 20:11:57,185 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 20:11:57,185 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-29 20:11:57,185 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [410468797] [2020-11-29 20:11:57,187 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 20:11:57,187 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:11:57,189 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 20:11:57,190 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-29 20:11:57,190 INFO L87 Difference]: Start difference. First operand 790 states and 907 transitions. Second operand 4 states. [2020-11-29 20:11:58,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:11:58,416 INFO L93 Difference]: Finished difference Result 1971 states and 2313 transitions. [2020-11-29 20:11:58,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 20:11:58,416 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 123 [2020-11-29 20:11:58,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:11:58,427 INFO L225 Difference]: With dead ends: 1971 [2020-11-29 20:11:58,428 INFO L226 Difference]: Without dead ends: 1314 [2020-11-29 20:11:58,430 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-29 20:11:58,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1314 states. [2020-11-29 20:11:58,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1314 to 1183. [2020-11-29 20:11:58,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1183 states. [2020-11-29 20:11:58,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1183 states to 1183 states and 1367 transitions. [2020-11-29 20:11:58,472 INFO L78 Accepts]: Start accepts. Automaton has 1183 states and 1367 transitions. Word has length 123 [2020-11-29 20:11:58,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:11:58,472 INFO L481 AbstractCegarLoop]: Abstraction has 1183 states and 1367 transitions. [2020-11-29 20:11:58,472 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 20:11:58,472 INFO L276 IsEmpty]: Start isEmpty. Operand 1183 states and 1367 transitions. [2020-11-29 20:11:58,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2020-11-29 20:11:58,476 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:11:58,476 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 20:11:58,476 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-29 20:11:58,476 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 20:11:58,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:11:58,478 INFO L82 PathProgramCache]: Analyzing trace with hash 204518740, now seen corresponding path program 1 times [2020-11-29 20:11:58,479 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:11:58,479 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1472225516] [2020-11-29 20:11:58,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:11:58,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:11:58,574 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-11-29 20:11:58,574 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1472225516] [2020-11-29 20:11:58,575 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 20:11:58,575 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-29 20:11:58,575 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1908888525] [2020-11-29 20:11:58,576 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-29 20:11:58,576 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:11:58,577 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-29 20:11:58,577 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 20:11:58,577 INFO L87 Difference]: Start difference. First operand 1183 states and 1367 transitions. Second operand 3 states. [2020-11-29 20:11:59,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:11:59,310 INFO L93 Difference]: Finished difference Result 2757 states and 3167 transitions. [2020-11-29 20:11:59,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-29 20:11:59,311 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 132 [2020-11-29 20:11:59,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:11:59,321 INFO L225 Difference]: With dead ends: 2757 [2020-11-29 20:11:59,321 INFO L226 Difference]: Without dead ends: 1576 [2020-11-29 20:11:59,324 INFO L677 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 [2020-11-29 20:11:59,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1576 states. [2020-11-29 20:11:59,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1576 to 1445. [2020-11-29 20:11:59,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1445 states. [2020-11-29 20:11:59,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1445 states to 1445 states and 1665 transitions. [2020-11-29 20:11:59,372 INFO L78 Accepts]: Start accepts. Automaton has 1445 states and 1665 transitions. Word has length 132 [2020-11-29 20:11:59,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:11:59,372 INFO L481 AbstractCegarLoop]: Abstraction has 1445 states and 1665 transitions. [2020-11-29 20:11:59,372 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-29 20:11:59,373 INFO L276 IsEmpty]: Start isEmpty. Operand 1445 states and 1665 transitions. [2020-11-29 20:11:59,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2020-11-29 20:11:59,377 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:11:59,377 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 20:11:59,377 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-29 20:11:59,378 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 20:11:59,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:11:59,378 INFO L82 PathProgramCache]: Analyzing trace with hash -1999910269, now seen corresponding path program 1 times [2020-11-29 20:11:59,379 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:11:59,379 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [209268957] [2020-11-29 20:11:59,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:11:59,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:11:59,503 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 32 proven. 3 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-11-29 20:11:59,504 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [209268957] [2020-11-29 20:11:59,504 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [450733522] [2020-11-29 20:11:59,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_018976d1-a4ad-46f8-8dcc-921a862e2833/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 [2020-11-29 20:11:59,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:11:59,637 INFO L263 TraceCheckSpWp]: Trace formula consists of 311 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-29 20:11:59,654 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 20:11:59,731 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-11-29 20:11:59,731 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-11-29 20:11:59,731 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2020-11-29 20:11:59,732 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [282689321] [2020-11-29 20:11:59,733 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-29 20:11:59,737 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:11:59,744 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-29 20:11:59,744 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-29 20:11:59,744 INFO L87 Difference]: Start difference. First operand 1445 states and 1665 transitions. Second operand 3 states. [2020-11-29 20:12:00,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:12:00,479 INFO L93 Difference]: Finished difference Result 3281 states and 3811 transitions. [2020-11-29 20:12:00,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-29 20:12:00,480 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 138 [2020-11-29 20:12:00,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:12:00,493 INFO L225 Difference]: With dead ends: 3281 [2020-11-29 20:12:00,494 INFO L226 Difference]: Without dead ends: 1838 [2020-11-29 20:12:00,496 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-29 20:12:00,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1838 states. [2020-11-29 20:12:00,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1838 to 1576. [2020-11-29 20:12:00,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1576 states. [2020-11-29 20:12:00,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1576 states to 1576 states and 1800 transitions. [2020-11-29 20:12:00,546 INFO L78 Accepts]: Start accepts. Automaton has 1576 states and 1800 transitions. Word has length 138 [2020-11-29 20:12:00,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:12:00,546 INFO L481 AbstractCegarLoop]: Abstraction has 1576 states and 1800 transitions. [2020-11-29 20:12:00,546 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-29 20:12:00,547 INFO L276 IsEmpty]: Start isEmpty. Operand 1576 states and 1800 transitions. [2020-11-29 20:12:00,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2020-11-29 20:12:00,552 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:12:00,553 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 20:12:00,780 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 20:12:00,781 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 20:12:00,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:12:00,781 INFO L82 PathProgramCache]: Analyzing trace with hash -2072933007, now seen corresponding path program 1 times [2020-11-29 20:12:00,782 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:12:00,782 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1297733374] [2020-11-29 20:12:00,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:12:00,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:12:00,895 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 54 proven. 3 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2020-11-29 20:12:00,895 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1297733374] [2020-11-29 20:12:00,896 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [495450213] [2020-11-29 20:12:00,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_018976d1-a4ad-46f8-8dcc-921a862e2833/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 [2020-11-29 20:12:01,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:12:01,037 INFO L263 TraceCheckSpWp]: Trace formula consists of 395 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-29 20:12:01,042 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 20:12:01,155 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 123 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2020-11-29 20:12:01,155 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-11-29 20:12:01,155 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2020-11-29 20:12:01,156 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2018316173] [2020-11-29 20:12:01,156 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-29 20:12:01,157 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:12:01,157 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-29 20:12:01,157 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-11-29 20:12:01,158 INFO L87 Difference]: Start difference. First operand 1576 states and 1800 transitions. Second operand 3 states. [2020-11-29 20:12:01,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:12:01,829 INFO L93 Difference]: Finished difference Result 4067 states and 4634 transitions. [2020-11-29 20:12:01,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-29 20:12:01,830 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 195 [2020-11-29 20:12:01,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:12:01,846 INFO L225 Difference]: With dead ends: 4067 [2020-11-29 20:12:01,846 INFO L226 Difference]: Without dead ends: 2493 [2020-11-29 20:12:01,849 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 197 GetRequests, 194 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-11-29 20:12:01,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2493 states. [2020-11-29 20:12:01,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2493 to 2362. [2020-11-29 20:12:01,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2362 states. [2020-11-29 20:12:01,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2362 states to 2362 states and 2680 transitions. [2020-11-29 20:12:01,916 INFO L78 Accepts]: Start accepts. Automaton has 2362 states and 2680 transitions. Word has length 195 [2020-11-29 20:12:01,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:12:01,916 INFO L481 AbstractCegarLoop]: Abstraction has 2362 states and 2680 transitions. [2020-11-29 20:12:01,916 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-29 20:12:01,917 INFO L276 IsEmpty]: Start isEmpty. Operand 2362 states and 2680 transitions. [2020-11-29 20:12:01,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2020-11-29 20:12:01,925 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:12:01,925 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 20:12:02,170 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 20:12:02,171 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 20:12:02,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:12:02,171 INFO L82 PathProgramCache]: Analyzing trace with hash -1162017255, now seen corresponding path program 1 times [2020-11-29 20:12:02,171 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:12:02,172 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [238923029] [2020-11-29 20:12:02,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:12:02,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:12:02,288 INFO L134 CoverageAnalysis]: Checked inductivity of 273 backedges. 86 proven. 3 refuted. 0 times theorem prover too weak. 184 trivial. 0 not checked. [2020-11-29 20:12:02,289 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [238923029] [2020-11-29 20:12:02,289 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [44424625] [2020-11-29 20:12:02,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_018976d1-a4ad-46f8-8dcc-921a862e2833/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 [2020-11-29 20:12:02,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:12:02,451 INFO L263 TraceCheckSpWp]: Trace formula consists of 489 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-29 20:12:02,456 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 20:12:02,565 INFO L134 CoverageAnalysis]: Checked inductivity of 273 backedges. 118 proven. 0 refuted. 0 times theorem prover too weak. 155 trivial. 0 not checked. [2020-11-29 20:12:02,565 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-11-29 20:12:02,566 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2020-11-29 20:12:02,566 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [572177149] [2020-11-29 20:12:02,567 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-29 20:12:02,567 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:12:02,568 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-29 20:12:02,568 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-29 20:12:02,568 INFO L87 Difference]: Start difference. First operand 2362 states and 2680 transitions. Second operand 3 states. [2020-11-29 20:12:03,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:12:03,194 INFO L93 Difference]: Finished difference Result 4982 states and 5657 transitions. [2020-11-29 20:12:03,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-29 20:12:03,195 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 227 [2020-11-29 20:12:03,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:12:03,196 INFO L225 Difference]: With dead ends: 4982 [2020-11-29 20:12:03,196 INFO L226 Difference]: Without dead ends: 0 [2020-11-29 20:12:03,201 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 229 GetRequests, 226 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-29 20:12:03,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-29 20:12:03,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-29 20:12:03,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-29 20:12:03,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-29 20:12:03,202 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 227 [2020-11-29 20:12:03,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:12:03,203 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-29 20:12:03,203 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-29 20:12:03,204 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-29 20:12:03,205 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-29 20:12:03,420 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 20:12:03,422 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-29 20:12:03,645 INFO L274 CegarLoopResult]: For program point L564(line 564) no Hoare annotation was computed. [2020-11-29 20:12:03,645 INFO L274 CegarLoopResult]: For program point L531(line 531) no Hoare annotation was computed. [2020-11-29 20:12:03,645 INFO L274 CegarLoopResult]: For program point L498(line 498) no Hoare annotation was computed. [2020-11-29 20:12:03,645 INFO L274 CegarLoopResult]: For program point L465(line 465) no Hoare annotation was computed. [2020-11-29 20:12:03,646 INFO L274 CegarLoopResult]: For program point L432(line 432) no Hoare annotation was computed. [2020-11-29 20:12:03,646 INFO L274 CegarLoopResult]: For program point L102(lines 102 400) no Hoare annotation was computed. [2020-11-29 20:12:03,646 INFO L274 CegarLoopResult]: For program point L598(line 598) no Hoare annotation was computed. [2020-11-29 20:12:03,646 INFO L274 CegarLoopResult]: For program point L334(lines 334 400) no Hoare annotation was computed. [2020-11-29 20:12:03,646 INFO L274 CegarLoopResult]: For program point L566-1(lines 40 585) no Hoare annotation was computed. [2020-11-29 20:12:03,646 INFO L274 CegarLoopResult]: For program point L533-1(lines 40 585) no Hoare annotation was computed. [2020-11-29 20:12:03,646 INFO L274 CegarLoopResult]: For program point L500-1(lines 40 585) no Hoare annotation was computed. [2020-11-29 20:12:03,647 INFO L274 CegarLoopResult]: For program point L467-1(lines 40 585) no Hoare annotation was computed. [2020-11-29 20:12:03,647 INFO L274 CegarLoopResult]: For program point L401(lines 401 403) no Hoare annotation was computed. [2020-11-29 20:12:03,647 INFO L274 CegarLoopResult]: For program point L434-1(lines 40 585) no Hoare annotation was computed. [2020-11-29 20:12:03,647 INFO L274 CegarLoopResult]: For program point L401-2(lines 40 585) no Hoare annotation was computed. [2020-11-29 20:12:03,647 INFO L274 CegarLoopResult]: For program point L302(lines 302 400) no Hoare annotation was computed. [2020-11-29 20:12:03,647 INFO L274 CegarLoopResult]: For program point L170(lines 170 400) no Hoare annotation was computed. [2020-11-29 20:12:03,647 INFO L274 CegarLoopResult]: For program point L567(line 567) no Hoare annotation was computed. [2020-11-29 20:12:03,647 INFO L274 CegarLoopResult]: For program point L534(line 534) no Hoare annotation was computed. [2020-11-29 20:12:03,647 INFO L274 CegarLoopResult]: For program point L501(line 501) no Hoare annotation was computed. [2020-11-29 20:12:03,648 INFO L274 CegarLoopResult]: For program point L468(line 468) no Hoare annotation was computed. [2020-11-29 20:12:03,648 INFO L274 CegarLoopResult]: For program point L435(line 435) no Hoare annotation was computed. [2020-11-29 20:12:03,648 INFO L274 CegarLoopResult]: For program point L402(line 402) no Hoare annotation was computed. [2020-11-29 20:12:03,648 INFO L274 CegarLoopResult]: For program point L204(lines 204 400) no Hoare annotation was computed. [2020-11-29 20:12:03,648 INFO L274 CegarLoopResult]: For program point L72(lines 72 400) no Hoare annotation was computed. [2020-11-29 20:12:03,648 INFO L274 CegarLoopResult]: For program point L271(lines 271 400) no Hoare annotation was computed. [2020-11-29 20:12:03,648 INFO L274 CegarLoopResult]: For program point L139(lines 139 400) no Hoare annotation was computed. [2020-11-29 20:12:03,648 INFO L274 CegarLoopResult]: For program point L569-1(lines 40 585) no Hoare annotation was computed. [2020-11-29 20:12:03,648 INFO L274 CegarLoopResult]: For program point L536-1(lines 40 585) no Hoare annotation was computed. [2020-11-29 20:12:03,649 INFO L274 CegarLoopResult]: For program point L503-1(lines 40 585) no Hoare annotation was computed. [2020-11-29 20:12:03,649 INFO L274 CegarLoopResult]: For program point L470-1(lines 40 585) no Hoare annotation was computed. [2020-11-29 20:12:03,649 INFO L274 CegarLoopResult]: For program point L437-1(lines 40 585) no Hoare annotation was computed. [2020-11-29 20:12:03,649 INFO L274 CegarLoopResult]: For program point L371(lines 371 400) no Hoare annotation was computed. [2020-11-29 20:12:03,649 INFO L274 CegarLoopResult]: For program point L404-1(lines 40 585) no Hoare annotation was computed. [2020-11-29 20:12:03,649 INFO L274 CegarLoopResult]: For program point L107(lines 107 400) no Hoare annotation was computed. [2020-11-29 20:12:03,649 INFO L274 CegarLoopResult]: For program point L41(lines 41 400) no Hoare annotation was computed. [2020-11-29 20:12:03,649 INFO L274 CegarLoopResult]: For program point L570(line 570) no Hoare annotation was computed. [2020-11-29 20:12:03,649 INFO L274 CegarLoopResult]: For program point L537(line 537) no Hoare annotation was computed. [2020-11-29 20:12:03,650 INFO L274 CegarLoopResult]: For program point L504(line 504) no Hoare annotation was computed. [2020-11-29 20:12:03,650 INFO L274 CegarLoopResult]: For program point L471(line 471) no Hoare annotation was computed. [2020-11-29 20:12:03,650 INFO L274 CegarLoopResult]: For program point L438(line 438) no Hoare annotation was computed. [2020-11-29 20:12:03,650 INFO L274 CegarLoopResult]: For program point L405(line 405) no Hoare annotation was computed. [2020-11-29 20:12:03,650 INFO L274 CegarLoopResult]: For program point L339(lines 339 400) no Hoare annotation was computed. [2020-11-29 20:12:03,650 INFO L274 CegarLoopResult]: For program point L207(lines 207 400) no Hoare annotation was computed. [2020-11-29 20:12:03,650 INFO L274 CegarLoopResult]: For program point L75(lines 75 400) no Hoare annotation was computed. [2020-11-29 20:12:03,650 INFO L274 CegarLoopResult]: For program point L373(lines 373 400) no Hoare annotation was computed. [2020-11-29 20:12:03,650 INFO L274 CegarLoopResult]: For program point L241(lines 241 400) no Hoare annotation was computed. [2020-11-29 20:12:03,651 INFO L274 CegarLoopResult]: For program point L175(lines 175 400) no Hoare annotation was computed. [2020-11-29 20:12:03,651 INFO L274 CegarLoopResult]: For program point L572-1(lines 40 585) no Hoare annotation was computed. [2020-11-29 20:12:03,651 INFO L274 CegarLoopResult]: For program point L539-1(lines 40 585) no Hoare annotation was computed. [2020-11-29 20:12:03,651 INFO L274 CegarLoopResult]: For program point L506-1(lines 40 585) no Hoare annotation was computed. [2020-11-29 20:12:03,651 INFO L274 CegarLoopResult]: For program point L473-1(lines 40 585) no Hoare annotation was computed. [2020-11-29 20:12:03,651 INFO L274 CegarLoopResult]: For program point L440-1(lines 40 585) no Hoare annotation was computed. [2020-11-29 20:12:03,651 INFO L274 CegarLoopResult]: For program point L407-1(lines 40 585) no Hoare annotation was computed. [2020-11-29 20:12:03,651 INFO L274 CegarLoopResult]: For program point L275(lines 275 400) no Hoare annotation was computed. [2020-11-29 20:12:03,652 INFO L274 CegarLoopResult]: For program point L573(line 573) no Hoare annotation was computed. [2020-11-29 20:12:03,652 INFO L274 CegarLoopResult]: For program point L540(line 540) no Hoare annotation was computed. [2020-11-29 20:12:03,652 INFO L274 CegarLoopResult]: For program point L507(line 507) no Hoare annotation was computed. [2020-11-29 20:12:03,652 INFO L274 CegarLoopResult]: For program point L474(line 474) no Hoare annotation was computed. [2020-11-29 20:12:03,652 INFO L274 CegarLoopResult]: For program point L441(line 441) no Hoare annotation was computed. [2020-11-29 20:12:03,652 INFO L274 CegarLoopResult]: For program point L408(line 408) no Hoare annotation was computed. [2020-11-29 20:12:03,652 INFO L274 CegarLoopResult]: For program point L375(lines 375 400) no Hoare annotation was computed. [2020-11-29 20:12:03,652 INFO L274 CegarLoopResult]: For program point L309(lines 309 400) no Hoare annotation was computed. [2020-11-29 20:12:03,653 INFO L274 CegarLoopResult]: For program point L45(lines 45 400) no Hoare annotation was computed. [2020-11-29 20:12:03,653 INFO L274 CegarLoopResult]: For program point L12(line 12) no Hoare annotation was computed. [2020-11-29 20:12:03,653 INFO L274 CegarLoopResult]: For program point L343(lines 343 400) no Hoare annotation was computed. [2020-11-29 20:12:03,653 INFO L274 CegarLoopResult]: For program point L112(lines 112 400) no Hoare annotation was computed. [2020-11-29 20:12:03,653 INFO L274 CegarLoopResult]: For program point L575-1(lines 40 585) no Hoare annotation was computed. [2020-11-29 20:12:03,653 INFO L274 CegarLoopResult]: For program point L542-1(lines 40 585) no Hoare annotation was computed. [2020-11-29 20:12:03,653 INFO L274 CegarLoopResult]: For program point L509-1(lines 40 585) no Hoare annotation was computed. [2020-11-29 20:12:03,653 INFO L274 CegarLoopResult]: For program point L476-1(lines 40 585) no Hoare annotation was computed. [2020-11-29 20:12:03,653 INFO L274 CegarLoopResult]: For program point L443-1(lines 40 585) no Hoare annotation was computed. [2020-11-29 20:12:03,654 INFO L274 CegarLoopResult]: For program point L410-1(lines 40 585) no Hoare annotation was computed. [2020-11-29 20:12:03,654 INFO L274 CegarLoopResult]: For program point L278(lines 278 400) no Hoare annotation was computed. [2020-11-29 20:12:03,654 INFO L274 CegarLoopResult]: For program point L146(lines 146 400) no Hoare annotation was computed. [2020-11-29 20:12:03,654 INFO L274 CegarLoopResult]: For program point L576(line 576) no Hoare annotation was computed. [2020-11-29 20:12:03,654 INFO L274 CegarLoopResult]: For program point L543(line 543) no Hoare annotation was computed. [2020-11-29 20:12:03,654 INFO L274 CegarLoopResult]: For program point L510(line 510) no Hoare annotation was computed. [2020-11-29 20:12:03,654 INFO L274 CegarLoopResult]: For program point L477(line 477) no Hoare annotation was computed. [2020-11-29 20:12:03,654 INFO L274 CegarLoopResult]: For program point L444(line 444) no Hoare annotation was computed. [2020-11-29 20:12:03,654 INFO L274 CegarLoopResult]: For program point L411(line 411) no Hoare annotation was computed. [2020-11-29 20:12:03,655 INFO L274 CegarLoopResult]: For program point L213(lines 213 400) no Hoare annotation was computed. [2020-11-29 20:12:03,655 INFO L274 CegarLoopResult]: For program point L82(lines 82 400) no Hoare annotation was computed. [2020-11-29 20:12:03,655 INFO L274 CegarLoopResult]: For program point L578-1(lines 40 585) no Hoare annotation was computed. [2020-11-29 20:12:03,655 INFO L274 CegarLoopResult]: For program point L545-1(lines 40 585) no Hoare annotation was computed. [2020-11-29 20:12:03,655 INFO L274 CegarLoopResult]: For program point L512-1(lines 40 585) no Hoare annotation was computed. [2020-11-29 20:12:03,655 INFO L274 CegarLoopResult]: For program point L479-1(lines 40 585) no Hoare annotation was computed. [2020-11-29 20:12:03,655 INFO L274 CegarLoopResult]: For program point L446-1(lines 40 585) no Hoare annotation was computed. [2020-11-29 20:12:03,655 INFO L274 CegarLoopResult]: For program point L413-1(lines 40 585) no Hoare annotation was computed. [2020-11-29 20:12:03,655 INFO L274 CegarLoopResult]: For program point L347(lines 347 400) no Hoare annotation was computed. [2020-11-29 20:12:03,658 INFO L274 CegarLoopResult]: For program point L248(lines 248 400) no Hoare annotation was computed. [2020-11-29 20:12:03,658 INFO L274 CegarLoopResult]: For program point L579(line 579) no Hoare annotation was computed. [2020-11-29 20:12:03,658 INFO L274 CegarLoopResult]: For program point L546(line 546) no Hoare annotation was computed. [2020-11-29 20:12:03,658 INFO L274 CegarLoopResult]: For program point L513(line 513) no Hoare annotation was computed. [2020-11-29 20:12:03,658 INFO L274 CegarLoopResult]: For program point L480(line 480) no Hoare annotation was computed. [2020-11-29 20:12:03,659 INFO L274 CegarLoopResult]: For program point L447(line 447) no Hoare annotation was computed. [2020-11-29 20:12:03,659 INFO L274 CegarLoopResult]: For program point L414(line 414) no Hoare annotation was computed. [2020-11-29 20:12:03,659 INFO L274 CegarLoopResult]: For program point L183(lines 183 400) no Hoare annotation was computed. [2020-11-29 20:12:03,659 INFO L274 CegarLoopResult]: For program point L150(lines 150 400) no Hoare annotation was computed. [2020-11-29 20:12:03,659 INFO L274 CegarLoopResult]: For program point L382(lines 382 400) no Hoare annotation was computed. [2020-11-29 20:12:03,659 INFO L274 CegarLoopResult]: For program point L316(lines 316 400) no Hoare annotation was computed. [2020-11-29 20:12:03,660 INFO L274 CegarLoopResult]: For program point L283(lines 283 400) no Hoare annotation was computed. [2020-11-29 20:12:03,660 INFO L274 CegarLoopResult]: For program point L118(lines 118 400) no Hoare annotation was computed. [2020-11-29 20:12:03,660 INFO L274 CegarLoopResult]: For program point L581-1(lines 581 583) no Hoare annotation was computed. [2020-11-29 20:12:03,660 INFO L274 CegarLoopResult]: For program point L548-1(lines 40 585) no Hoare annotation was computed. [2020-11-29 20:12:03,660 INFO L274 CegarLoopResult]: For program point L515-1(lines 40 585) no Hoare annotation was computed. [2020-11-29 20:12:03,661 INFO L274 CegarLoopResult]: For program point L482-1(lines 40 585) no Hoare annotation was computed. [2020-11-29 20:12:03,661 INFO L274 CegarLoopResult]: For program point L449-1(lines 40 585) no Hoare annotation was computed. [2020-11-29 20:12:03,661 INFO L274 CegarLoopResult]: For program point L416-1(lines 40 585) no Hoare annotation was computed. [2020-11-29 20:12:03,661 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-11-29 20:12:03,661 INFO L274 CegarLoopResult]: For program point L218(lines 218 400) no Hoare annotation was computed. [2020-11-29 20:12:03,661 INFO L274 CegarLoopResult]: For program point L53(lines 53 400) no Hoare annotation was computed. [2020-11-29 20:12:03,662 INFO L274 CegarLoopResult]: For program point L582(line 582) no Hoare annotation was computed. [2020-11-29 20:12:03,662 INFO L274 CegarLoopResult]: For program point L549(line 549) no Hoare annotation was computed. [2020-11-29 20:12:03,662 INFO L274 CegarLoopResult]: For program point L516(line 516) no Hoare annotation was computed. [2020-11-29 20:12:03,662 INFO L274 CegarLoopResult]: For program point L483(line 483) no Hoare annotation was computed. [2020-11-29 20:12:03,662 INFO L274 CegarLoopResult]: For program point L450(line 450) no Hoare annotation was computed. [2020-11-29 20:12:03,662 INFO L274 CegarLoopResult]: For program point L417(line 417) no Hoare annotation was computed. [2020-11-29 20:12:03,663 INFO L274 CegarLoopResult]: For program point L154(lines 154 400) no Hoare annotation was computed. [2020-11-29 20:12:03,663 INFO L270 CegarLoopResult]: At program point L584(lines 40 585) the Hoare annotation is: (let ((.cse0 (= ~a17~0 1))) (or (and (<= ~a16~0 4) .cse0) (and (not (= ~a8~0 13)) (not (= ~a7~0 1)) .cse0) (and (= ~a21~0 1) (= ~a12~0 8) (<= ~a7~0 0) (= ~a20~0 1) .cse0) (<= ~a17~0 0) (<= ~a21~0 0))) [2020-11-29 20:12:03,663 INFO L274 CegarLoopResult]: For program point L551-1(lines 40 585) no Hoare annotation was computed. [2020-11-29 20:12:03,664 INFO L274 CegarLoopResult]: For program point L518-1(lines 40 585) no Hoare annotation was computed. [2020-11-29 20:12:03,664 INFO L274 CegarLoopResult]: For program point L485-1(lines 40 585) no Hoare annotation was computed. [2020-11-29 20:12:03,664 INFO L274 CegarLoopResult]: For program point L452-1(lines 40 585) no Hoare annotation was computed. [2020-11-29 20:12:03,664 INFO L274 CegarLoopResult]: For program point L419-1(lines 40 585) no Hoare annotation was computed. [2020-11-29 20:12:03,664 INFO L274 CegarLoopResult]: For program point L188(lines 188 400) no Hoare annotation was computed. [2020-11-29 20:12:03,664 INFO L274 CegarLoopResult]: For program point L552(line 552) no Hoare annotation was computed. [2020-11-29 20:12:03,665 INFO L274 CegarLoopResult]: For program point L519(line 519) no Hoare annotation was computed. [2020-11-29 20:12:03,665 INFO L274 CegarLoopResult]: For program point L486(line 486) no Hoare annotation was computed. [2020-11-29 20:12:03,665 INFO L274 CegarLoopResult]: For program point L453(line 453) no Hoare annotation was computed. [2020-11-29 20:12:03,665 INFO L274 CegarLoopResult]: For program point L420(line 420) no Hoare annotation was computed. [2020-11-29 20:12:03,665 INFO L274 CegarLoopResult]: For program point L387(lines 387 400) no Hoare annotation was computed. [2020-11-29 20:12:03,666 INFO L274 CegarLoopResult]: For program point L288(lines 288 400) no Hoare annotation was computed. [2020-11-29 20:12:03,666 INFO L274 CegarLoopResult]: For program point L255(lines 255 400) no Hoare annotation was computed. [2020-11-29 20:12:03,666 INFO L274 CegarLoopResult]: For program point L90(lines 90 400) no Hoare annotation was computed. [2020-11-29 20:12:03,666 INFO L274 CegarLoopResult]: For program point L355(lines 355 400) no Hoare annotation was computed. [2020-11-29 20:12:03,666 INFO L274 CegarLoopResult]: For program point L322(lines 322 400) no Hoare annotation was computed. [2020-11-29 20:12:03,666 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-29 20:12:03,667 INFO L274 CegarLoopResult]: For program point L124(lines 124 400) no Hoare annotation was computed. [2020-11-29 20:12:03,667 INFO L277 CegarLoopResult]: At program point L587(lines 587 604) the Hoare annotation is: true [2020-11-29 20:12:03,667 INFO L274 CegarLoopResult]: For program point L554-1(lines 40 585) no Hoare annotation was computed. [2020-11-29 20:12:03,667 INFO L274 CegarLoopResult]: For program point L521-1(lines 40 585) no Hoare annotation was computed. [2020-11-29 20:12:03,667 INFO L274 CegarLoopResult]: For program point L488-1(lines 40 585) no Hoare annotation was computed. [2020-11-29 20:12:03,667 INFO L274 CegarLoopResult]: For program point L455-1(lines 40 585) no Hoare annotation was computed. [2020-11-29 20:12:03,668 INFO L274 CegarLoopResult]: For program point L422-1(lines 40 585) no Hoare annotation was computed. [2020-11-29 20:12:03,668 INFO L274 CegarLoopResult]: For program point L224(lines 224 400) no Hoare annotation was computed. [2020-11-29 20:12:03,668 INFO L274 CegarLoopResult]: For program point L158(lines 158 400) no Hoare annotation was computed. [2020-11-29 20:12:03,668 INFO L274 CegarLoopResult]: For program point L59(lines 59 400) no Hoare annotation was computed. [2020-11-29 20:12:03,668 INFO L274 CegarLoopResult]: For program point L555(line 555) no Hoare annotation was computed. [2020-11-29 20:12:03,668 INFO L274 CegarLoopResult]: For program point L522(line 522) no Hoare annotation was computed. [2020-11-29 20:12:03,669 INFO L274 CegarLoopResult]: For program point L489(line 489) no Hoare annotation was computed. [2020-11-29 20:12:03,669 INFO L274 CegarLoopResult]: For program point L456(line 456) no Hoare annotation was computed. [2020-11-29 20:12:03,669 INFO L274 CegarLoopResult]: For program point L423(line 423) no Hoare annotation was computed. [2020-11-29 20:12:03,669 INFO L274 CegarLoopResult]: For program point L94(lines 94 400) no Hoare annotation was computed. [2020-11-29 20:12:03,669 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-11-29 20:12:03,669 INFO L274 CegarLoopResult]: For program point L557-1(lines 40 585) no Hoare annotation was computed. [2020-11-29 20:12:03,670 INFO L274 CegarLoopResult]: For program point L524-1(lines 40 585) no Hoare annotation was computed. [2020-11-29 20:12:03,670 INFO L274 CegarLoopResult]: For program point L491-1(lines 40 585) no Hoare annotation was computed. [2020-11-29 20:12:03,670 INFO L274 CegarLoopResult]: For program point L458-1(lines 40 585) no Hoare annotation was computed. [2020-11-29 20:12:03,670 INFO L274 CegarLoopResult]: For program point L392(lines 392 400) no Hoare annotation was computed. [2020-11-29 20:12:03,670 INFO L274 CegarLoopResult]: For program point L425-1(lines 40 585) no Hoare annotation was computed. [2020-11-29 20:12:03,670 INFO L274 CegarLoopResult]: For program point L326(lines 326 400) no Hoare annotation was computed. [2020-11-29 20:12:03,671 INFO L274 CegarLoopResult]: For program point L260(lines 260 400) no Hoare annotation was computed. [2020-11-29 20:12:03,671 INFO L274 CegarLoopResult]: For program point L558(line 558) no Hoare annotation was computed. [2020-11-29 20:12:03,671 INFO L274 CegarLoopResult]: For program point L525(line 525) no Hoare annotation was computed. [2020-11-29 20:12:03,671 INFO L274 CegarLoopResult]: For program point L492(line 492) no Hoare annotation was computed. [2020-11-29 20:12:03,671 INFO L274 CegarLoopResult]: For program point L459(line 459) no Hoare annotation was computed. [2020-11-29 20:12:03,672 INFO L274 CegarLoopResult]: For program point L426(line 426) no Hoare annotation was computed. [2020-11-29 20:12:03,672 INFO L274 CegarLoopResult]: For program point L228(lines 228 400) no Hoare annotation was computed. [2020-11-29 20:12:03,672 INFO L274 CegarLoopResult]: For program point L162(lines 162 400) no Hoare annotation was computed. [2020-11-29 20:12:03,672 INFO L274 CegarLoopResult]: For program point L129(lines 129 400) no Hoare annotation was computed. [2020-11-29 20:12:03,672 INFO L274 CegarLoopResult]: For program point L328(lines 328 400) no Hoare annotation was computed. [2020-11-29 20:12:03,673 INFO L274 CegarLoopResult]: For program point L196(lines 196 400) no Hoare annotation was computed. [2020-11-29 20:12:03,673 INFO L274 CegarLoopResult]: For program point L64(lines 64 400) no Hoare annotation was computed. [2020-11-29 20:12:03,673 INFO L274 CegarLoopResult]: For program point L560-1(lines 40 585) no Hoare annotation was computed. [2020-11-29 20:12:03,673 INFO L270 CegarLoopResult]: At program point L593-2(lines 593 603) the Hoare annotation is: (let ((.cse0 (= ~a17~0 1))) (or (and (<= ~a16~0 4) .cse0) (and (not (= ~a8~0 13)) (not (= ~a7~0 1)) .cse0) (and (= ~a21~0 1) (= ~a12~0 8) (<= ~a7~0 0) (= ~a20~0 1) .cse0) (<= ~a17~0 0) (<= ~a21~0 0))) [2020-11-29 20:12:03,673 INFO L274 CegarLoopResult]: For program point L527-1(lines 40 585) no Hoare annotation was computed. [2020-11-29 20:12:03,674 INFO L274 CegarLoopResult]: For program point L494-1(lines 40 585) no Hoare annotation was computed. [2020-11-29 20:12:03,674 INFO L274 CegarLoopResult]: For program point L461-1(lines 40 585) no Hoare annotation was computed. [2020-11-29 20:12:03,674 INFO L274 CegarLoopResult]: For program point L428-1(lines 40 585) no Hoare annotation was computed. [2020-11-29 20:12:03,674 INFO L274 CegarLoopResult]: For program point L296(lines 296 400) no Hoare annotation was computed. [2020-11-29 20:12:03,674 INFO L274 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-11-29 20:12:03,675 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 12) no Hoare annotation was computed. [2020-11-29 20:12:03,675 INFO L274 CegarLoopResult]: For program point L561(line 561) no Hoare annotation was computed. [2020-11-29 20:12:03,675 INFO L274 CegarLoopResult]: For program point L528(line 528) no Hoare annotation was computed. [2020-11-29 20:12:03,675 INFO L274 CegarLoopResult]: For program point L495(line 495) no Hoare annotation was computed. [2020-11-29 20:12:03,675 INFO L274 CegarLoopResult]: For program point L462(line 462) no Hoare annotation was computed. [2020-11-29 20:12:03,675 INFO L274 CegarLoopResult]: For program point L429(line 429) no Hoare annotation was computed. [2020-11-29 20:12:03,676 INFO L274 CegarLoopResult]: For program point L363(lines 363 400) no Hoare annotation was computed. [2020-11-29 20:12:03,676 INFO L274 CegarLoopResult]: For program point L199(lines 199 400) no Hoare annotation was computed. [2020-11-29 20:12:03,676 INFO L274 CegarLoopResult]: For program point L563-1(lines 40 585) no Hoare annotation was computed. [2020-11-29 20:12:03,676 INFO L274 CegarLoopResult]: For program point L530-1(lines 40 585) no Hoare annotation was computed. [2020-11-29 20:12:03,676 INFO L274 CegarLoopResult]: For program point L497-1(lines 40 585) no Hoare annotation was computed. [2020-11-29 20:12:03,676 INFO L274 CegarLoopResult]: For program point L464-1(lines 40 585) no Hoare annotation was computed. [2020-11-29 20:12:03,677 INFO L274 CegarLoopResult]: For program point L431-1(lines 40 585) no Hoare annotation was computed. [2020-11-29 20:12:03,677 INFO L274 CegarLoopResult]: For program point L365(lines 365 400) no Hoare annotation was computed. [2020-11-29 20:12:03,677 INFO L274 CegarLoopResult]: For program point L266(lines 266 400) no Hoare annotation was computed. [2020-11-29 20:12:03,677 INFO L274 CegarLoopResult]: For program point L233(lines 233 400) no Hoare annotation was computed. [2020-11-29 20:12:03,677 INFO L274 CegarLoopResult]: For program point L134(lines 134 400) no Hoare annotation was computed. [2020-11-29 20:12:03,698 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.11 08:12:03 BoogieIcfgContainer [2020-11-29 20:12:03,698 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-29 20:12:03,699 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-29 20:12:03,699 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-29 20:12:03,699 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-29 20:12:03,700 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 08:11:50" (3/4) ... [2020-11-29 20:12:03,703 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-29 20:12:03,727 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2020-11-29 20:12:03,729 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-11-29 20:12:03,730 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-29 20:12:03,732 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-29 20:12:03,924 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_018976d1-a4ad-46f8-8dcc-921a862e2833/bin/uautomizer/witness.graphml [2020-11-29 20:12:03,925 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-29 20:12:03,928 INFO L168 Benchmark]: Toolchain (without parser) took 16430.13 ms. Allocated memory was 90.2 MB in the beginning and 251.7 MB in the end (delta: 161.5 MB). Free memory was 57.8 MB in the beginning and 187.5 MB in the end (delta: -129.6 MB). Peak memory consumption was 32.1 MB. Max. memory is 16.1 GB. [2020-11-29 20:12:03,929 INFO L168 Benchmark]: CDTParser took 0.34 ms. Allocated memory is still 90.2 MB. Free memory was 49.6 MB in the beginning and 49.6 MB in the end (delta: 39.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 20:12:03,929 INFO L168 Benchmark]: CACSL2BoogieTranslator took 766.80 ms. Allocated memory is still 90.2 MB. Free memory was 57.6 MB in the beginning and 50.5 MB in the end (delta: 7.1 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-11-29 20:12:03,930 INFO L168 Benchmark]: Boogie Procedure Inliner took 109.34 ms. Allocated memory is still 90.2 MB. Free memory was 50.5 MB in the beginning and 44.9 MB in the end (delta: 5.6 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-29 20:12:03,931 INFO L168 Benchmark]: Boogie Preprocessor took 138.24 ms. Allocated memory is still 90.2 MB. Free memory was 44.9 MB in the beginning and 40.2 MB in the end (delta: 4.7 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2020-11-29 20:12:03,935 INFO L168 Benchmark]: RCFGBuilder took 1764.63 ms. Allocated memory was 90.2 MB in the beginning and 109.1 MB in the end (delta: 18.9 MB). Free memory was 40.2 MB in the beginning and 36.1 MB in the end (delta: 4.1 MB). Peak memory consumption was 34.3 MB. Max. memory is 16.1 GB. [2020-11-29 20:12:03,936 INFO L168 Benchmark]: TraceAbstraction took 13401.69 ms. Allocated memory was 109.1 MB in the beginning and 251.7 MB in the end (delta: 142.6 MB). Free memory was 36.1 MB in the beginning and 203.2 MB in the end (delta: -167.1 MB). Peak memory consumption was 107.1 MB. Max. memory is 16.1 GB. [2020-11-29 20:12:03,936 INFO L168 Benchmark]: Witness Printer took 226.33 ms. Allocated memory is still 251.7 MB. Free memory was 202.1 MB in the beginning and 187.5 MB in the end (delta: 14.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2020-11-29 20:12:03,939 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34 ms. Allocated memory is still 90.2 MB. Free memory was 49.6 MB in the beginning and 49.6 MB in the end (delta: 39.4 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 766.80 ms. Allocated memory is still 90.2 MB. Free memory was 57.6 MB in the beginning and 50.5 MB in the end (delta: 7.1 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 109.34 ms. Allocated memory is still 90.2 MB. Free memory was 50.5 MB in the beginning and 44.9 MB in the end (delta: 5.6 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 138.24 ms. Allocated memory is still 90.2 MB. Free memory was 44.9 MB in the beginning and 40.2 MB in the end (delta: 4.7 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1764.63 ms. Allocated memory was 90.2 MB in the beginning and 109.1 MB in the end (delta: 18.9 MB). Free memory was 40.2 MB in the beginning and 36.1 MB in the end (delta: 4.1 MB). Peak memory consumption was 34.3 MB. Max. memory is 16.1 GB. * TraceAbstraction took 13401.69 ms. Allocated memory was 109.1 MB in the beginning and 251.7 MB in the end (delta: 142.6 MB). Free memory was 36.1 MB in the beginning and 203.2 MB in the end (delta: -167.1 MB). Peak memory consumption was 107.1 MB. Max. memory is 16.1 GB. * Witness Printer took 226.33 ms. Allocated memory is still 251.7 MB. Free memory was 202.1 MB in the beginning and 187.5 MB in the end (delta: 14.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 12]: 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: 40]: Loop Invariant Derived loop invariant: ((((a16 <= 4 && a17 == 1) || ((!(a8 == 13) && !(a7 == 1)) && a17 == 1)) || ((((a21 == 1 && a12 == 8) && a7 <= 0) && a20 == 1) && a17 == 1)) || a17 <= 0) || a21 <= 0 - InvariantResult [Line: 587]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 593]: Loop Invariant Derived loop invariant: ((((a16 <= 4 && a17 == 1) || ((!(a8 == 13) && !(a7 == 1)) && a17 == 1)) || ((((a21 == 1 && a12 == 8) && a7 <= 0) && a20 == 1) && a17 == 1)) || a17 <= 0) || a21 <= 0 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 199 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 13.0s, OverallIterations: 8, TraceHistogramMax: 7, AutomataDifference: 8.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.2s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 710 SDtfs, 1206 SDslu, 73 SDs, 0 SdLazy, 3627 SolverSat, 630 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 6.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 703 GetRequests, 681 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2362occurred in iteration=7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 8 MinimizatonAttempts, 786 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 52 NumberOfFragments, 85 HoareAnnotationTreeSize, 3 FomulaSimplifications, 770 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 3 FomulaSimplificationsInter, 180 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 1.4s InterpolantComputationTime, 1838 NumberOfCodeBlocks, 1838 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 1826 ConstructedInterpolants, 0 QuantifiedInterpolants, 926479 SizeOfPredicates, 4 NumberOfNonLiveVariables, 1461 ConjunctsInSsa, 8 ConjunctsInUnsatCore, 12 InterpolantComputations, 8 PerfectInterpolantSequences, 1003/1015 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...