./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem10_label07.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_b7892da7-3d55-4aeb-a0e0-82f556663682/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_b7892da7-3d55-4aeb-a0e0-82f556663682/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_b7892da7-3d55-4aeb-a0e0-82f556663682/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_b7892da7-3d55-4aeb-a0e0-82f556663682/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem10_label07.c -s /tmp/vcloud-vcloud-master/worker/run_dir_b7892da7-3d55-4aeb-a0e0-82f556663682/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_b7892da7-3d55-4aeb-a0e0-82f556663682/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 f428802ac72f1d2a0fe821ea4740cdcba55def6a ....................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 20:47:33,355 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-29 20:47:33,357 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-29 20:47:33,414 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-29 20:47:33,418 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-29 20:47:33,432 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-29 20:47:33,435 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-29 20:47:33,440 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-29 20:47:33,443 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-29 20:47:33,449 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-29 20:47:33,450 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-29 20:47:33,452 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-29 20:47:33,453 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-29 20:47:33,456 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-29 20:47:33,458 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-29 20:47:33,460 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-29 20:47:33,462 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-29 20:47:33,463 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-29 20:47:33,469 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-29 20:47:33,476 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-29 20:47:33,478 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-29 20:47:33,480 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-29 20:47:33,482 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-29 20:47:33,483 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-29 20:47:33,492 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-29 20:47:33,493 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-29 20:47:33,493 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-29 20:47:33,496 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-29 20:47:33,496 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-29 20:47:33,498 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-29 20:47:33,498 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-29 20:47:33,500 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-29 20:47:33,502 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-29 20:47:33,503 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-29 20:47:33,504 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-29 20:47:33,505 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-29 20:47:33,506 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-29 20:47:33,506 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-29 20:47:33,506 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-29 20:47:33,508 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-29 20:47:33,508 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-29 20:47:33,512 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_b7892da7-3d55-4aeb-a0e0-82f556663682/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-29 20:47:33,557 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-29 20:47:33,557 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-29 20:47:33,559 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-29 20:47:33,559 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-29 20:47:33,560 INFO L138 SettingsManager]: * Use SBE=true [2020-11-29 20:47:33,560 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-29 20:47:33,560 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-29 20:47:33,561 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-29 20:47:33,561 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-29 20:47:33,561 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-29 20:47:33,562 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-29 20:47:33,563 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-29 20:47:33,563 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-29 20:47:33,563 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-29 20:47:33,564 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-29 20:47:33,564 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-29 20:47:33,564 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-29 20:47:33,565 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-29 20:47:33,565 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-29 20:47:33,565 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-29 20:47:33,566 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-29 20:47:33,566 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-29 20:47:33,566 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-29 20:47:33,567 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-29 20:47:33,567 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-29 20:47:33,567 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-29 20:47:33,567 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-29 20:47:33,568 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-29 20:47:33,568 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-29 20:47:33,568 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_b7892da7-3d55-4aeb-a0e0-82f556663682/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_b7892da7-3d55-4aeb-a0e0-82f556663682/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f428802ac72f1d2a0fe821ea4740cdcba55def6a [2020-11-29 20:47:33,870 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-29 20:47:33,896 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-29 20:47:33,901 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-29 20:47:33,902 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-29 20:47:33,903 INFO L275 PluginConnector]: CDTParser initialized [2020-11-29 20:47:33,905 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_b7892da7-3d55-4aeb-a0e0-82f556663682/bin/uautomizer/../../sv-benchmarks/c/eca-rers2012/Problem10_label07.c [2020-11-29 20:47:33,985 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_b7892da7-3d55-4aeb-a0e0-82f556663682/bin/uautomizer/data/4f50a939e/3ac37c4257274a77aed0a96b5b5b4023/FLAGed6192e7b [2020-11-29 20:47:34,601 INFO L306 CDTParser]: Found 1 translation units. [2020-11-29 20:47:34,602 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_b7892da7-3d55-4aeb-a0e0-82f556663682/sv-benchmarks/c/eca-rers2012/Problem10_label07.c [2020-11-29 20:47:34,621 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_b7892da7-3d55-4aeb-a0e0-82f556663682/bin/uautomizer/data/4f50a939e/3ac37c4257274a77aed0a96b5b5b4023/FLAGed6192e7b [2020-11-29 20:47:34,872 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_b7892da7-3d55-4aeb-a0e0-82f556663682/bin/uautomizer/data/4f50a939e/3ac37c4257274a77aed0a96b5b5b4023 [2020-11-29 20:47:34,875 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-29 20:47:34,876 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-29 20:47:34,878 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-29 20:47:34,878 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-29 20:47:34,881 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-29 20:47:34,882 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 08:47:34" (1/1) ... [2020-11-29 20:47:34,884 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@79c1d716 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:47:34, skipping insertion in model container [2020-11-29 20:47:34,884 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 08:47:34" (1/1) ... [2020-11-29 20:47:34,892 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-29 20:47:34,939 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-29 20:47:35,356 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 20:47:35,366 INFO L203 MainTranslator]: Completed pre-run [2020-11-29 20:47:35,537 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 20:47:35,552 INFO L208 MainTranslator]: Completed translation [2020-11-29 20:47:35,553 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:47:35 WrapperNode [2020-11-29 20:47:35,553 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-29 20:47:35,554 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-29 20:47:35,555 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-29 20:47:35,555 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-29 20:47:35,563 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:47:35" (1/1) ... [2020-11-29 20:47:35,583 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:47:35" (1/1) ... [2020-11-29 20:47:35,645 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-29 20:47:35,649 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-29 20:47:35,650 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-29 20:47:35,650 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-29 20:47:35,660 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:47:35" (1/1) ... [2020-11-29 20:47:35,660 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:47:35" (1/1) ... [2020-11-29 20:47:35,670 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:47:35" (1/1) ... [2020-11-29 20:47:35,670 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:47:35" (1/1) ... [2020-11-29 20:47:35,699 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:47:35" (1/1) ... [2020-11-29 20:47:35,709 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:47:35" (1/1) ... [2020-11-29 20:47:35,721 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:47:35" (1/1) ... [2020-11-29 20:47:35,733 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-29 20:47:35,734 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-29 20:47:35,735 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-29 20:47:35,735 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-29 20:47:35,736 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:47:35" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b7892da7-3d55-4aeb-a0e0-82f556663682/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 20:47:35,810 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-29 20:47:35,810 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-29 20:47:35,810 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-29 20:47:35,810 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-29 20:47:37,453 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-29 20:47:37,454 INFO L298 CfgBuilder]: Removed 9 assume(true) statements. [2020-11-29 20:47:37,458 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 08:47:37 BoogieIcfgContainer [2020-11-29 20:47:37,458 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-29 20:47:37,460 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-29 20:47:37,462 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-29 20:47:37,466 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-29 20:47:37,466 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 08:47:34" (1/3) ... [2020-11-29 20:47:37,467 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33681620 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 08:47:37, skipping insertion in model container [2020-11-29 20:47:37,467 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:47:35" (2/3) ... [2020-11-29 20:47:37,468 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33681620 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 08:47:37, skipping insertion in model container [2020-11-29 20:47:37,468 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 08:47:37" (3/3) ... [2020-11-29 20:47:37,469 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem10_label07.c [2020-11-29 20:47:37,480 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-29 20:47:37,485 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-29 20:47:37,497 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-29 20:47:37,529 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-29 20:47:37,529 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-29 20:47:37,529 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-29 20:47:37,529 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-29 20:47:37,529 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-29 20:47:37,530 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-29 20:47:37,530 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-29 20:47:37,530 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-29 20:47:37,548 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states. [2020-11-29 20:47:37,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-11-29 20:47:37,555 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:47:37,556 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] [2020-11-29 20:47:37,557 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 20:47:37,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:47:37,563 INFO L82 PathProgramCache]: Analyzing trace with hash -2068820151, now seen corresponding path program 1 times [2020-11-29 20:47:37,572 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:47:37,572 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [142691080] [2020-11-29 20:47:37,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:47:37,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:47:37,823 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 20:47:37,823 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [142691080] [2020-11-29 20:47:37,824 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 20:47:37,824 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-29 20:47:37,825 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [965441765] [2020-11-29 20:47:37,830 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-29 20:47:37,830 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:47:37,843 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-29 20:47:37,843 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 20:47:37,845 INFO L87 Difference]: Start difference. First operand 207 states. Second operand 3 states. [2020-11-29 20:47:39,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:47:39,436 INFO L93 Difference]: Finished difference Result 568 states and 982 transitions. [2020-11-29 20:47:39,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-29 20:47:39,438 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 45 [2020-11-29 20:47:39,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:47:39,452 INFO L225 Difference]: With dead ends: 568 [2020-11-29 20:47:39,452 INFO L226 Difference]: Without dead ends: 282 [2020-11-29 20:47:39,456 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 20:47:39,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2020-11-29 20:47:39,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 282. [2020-11-29 20:47:39,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 282 states. [2020-11-29 20:47:39,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 282 states to 282 states and 432 transitions. [2020-11-29 20:47:39,519 INFO L78 Accepts]: Start accepts. Automaton has 282 states and 432 transitions. Word has length 45 [2020-11-29 20:47:39,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:47:39,519 INFO L481 AbstractCegarLoop]: Abstraction has 282 states and 432 transitions. [2020-11-29 20:47:39,519 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-29 20:47:39,520 INFO L276 IsEmpty]: Start isEmpty. Operand 282 states and 432 transitions. [2020-11-29 20:47:39,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-11-29 20:47:39,525 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:47:39,525 INFO L422 BasicCegarLoop]: trace histogram [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, 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] [2020-11-29 20:47:39,525 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-29 20:47:39,526 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 20:47:39,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:47:39,527 INFO L82 PathProgramCache]: Analyzing trace with hash 1775270330, now seen corresponding path program 1 times [2020-11-29 20:47:39,527 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:47:39,527 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1452859741] [2020-11-29 20:47:39,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:47:39,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:47:39,855 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 20:47:39,855 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1452859741] [2020-11-29 20:47:39,855 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [733051773] [2020-11-29 20:47:39,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b7892da7-3d55-4aeb-a0e0-82f556663682/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 20:47:39,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:47:39,932 INFO L263 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-29 20:47:39,940 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 20:47:40,042 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2020-11-29 20:47:40,043 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-11-29 20:47:40,043 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 4 [2020-11-29 20:47:40,044 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1268882076] [2020-11-29 20:47:40,045 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-29 20:47:40,045 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:47:40,047 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-29 20:47:40,047 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-11-29 20:47:40,047 INFO L87 Difference]: Start difference. First operand 282 states and 432 transitions. Second operand 3 states. [2020-11-29 20:47:40,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:47:40,742 INFO L93 Difference]: Finished difference Result 562 states and 862 transitions. [2020-11-29 20:47:40,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-29 20:47:40,743 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 111 [2020-11-29 20:47:40,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:47:40,748 INFO L225 Difference]: With dead ends: 562 [2020-11-29 20:47:40,748 INFO L226 Difference]: Without dead ends: 560 [2020-11-29 20:47:40,749 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 110 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 20:47:40,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 560 states. [2020-11-29 20:47:40,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 560 to 282. [2020-11-29 20:47:40,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 282 states. [2020-11-29 20:47:40,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 282 states to 282 states and 432 transitions. [2020-11-29 20:47:40,775 INFO L78 Accepts]: Start accepts. Automaton has 282 states and 432 transitions. Word has length 111 [2020-11-29 20:47:40,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:47:40,776 INFO L481 AbstractCegarLoop]: Abstraction has 282 states and 432 transitions. [2020-11-29 20:47:40,776 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-29 20:47:40,776 INFO L276 IsEmpty]: Start isEmpty. Operand 282 states and 432 transitions. [2020-11-29 20:47:40,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2020-11-29 20:47:40,780 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:47:40,780 INFO L422 BasicCegarLoop]: trace histogram [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, 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] [2020-11-29 20:47:41,013 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2020-11-29 20:47:41,013 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 20:47:41,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:47:41,014 INFO L82 PathProgramCache]: Analyzing trace with hash 623839905, now seen corresponding path program 1 times [2020-11-29 20:47:41,014 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:47:41,015 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [919155350] [2020-11-29 20:47:41,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:47:41,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:47:41,178 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 20:47:41,180 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [919155350] [2020-11-29 20:47:41,181 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 20:47:41,181 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-29 20:47:41,181 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1582895691] [2020-11-29 20:47:41,184 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-29 20:47:41,184 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:47:41,187 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-29 20:47:41,187 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 20:47:41,188 INFO L87 Difference]: Start difference. First operand 282 states and 432 transitions. Second operand 3 states. [2020-11-29 20:47:41,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:47:41,947 INFO L93 Difference]: Finished difference Result 701 states and 1076 transitions. [2020-11-29 20:47:41,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-29 20:47:41,948 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 114 [2020-11-29 20:47:41,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:47:41,950 INFO L225 Difference]: With dead ends: 701 [2020-11-29 20:47:41,950 INFO L226 Difference]: Without dead ends: 421 [2020-11-29 20:47:41,951 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 20:47:41,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 421 states. [2020-11-29 20:47:41,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 421 to 421. [2020-11-29 20:47:41,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 421 states. [2020-11-29 20:47:41,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 421 states to 421 states and 596 transitions. [2020-11-29 20:47:41,970 INFO L78 Accepts]: Start accepts. Automaton has 421 states and 596 transitions. Word has length 114 [2020-11-29 20:47:41,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:47:41,971 INFO L481 AbstractCegarLoop]: Abstraction has 421 states and 596 transitions. [2020-11-29 20:47:41,971 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-29 20:47:41,971 INFO L276 IsEmpty]: Start isEmpty. Operand 421 states and 596 transitions. [2020-11-29 20:47:41,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2020-11-29 20:47:41,976 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:47:41,976 INFO L422 BasicCegarLoop]: trace histogram [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, 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] [2020-11-29 20:47:41,976 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-29 20:47:41,977 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 20:47:41,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:47:41,977 INFO L82 PathProgramCache]: Analyzing trace with hash 1358004824, now seen corresponding path program 1 times [2020-11-29 20:47:41,977 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:47:41,978 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [609759011] [2020-11-29 20:47:41,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:47:42,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:47:42,196 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 20:47:42,197 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [609759011] [2020-11-29 20:47:42,197 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 20:47:42,197 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-29 20:47:42,197 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1821953899] [2020-11-29 20:47:42,198 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 20:47:42,198 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:47:42,199 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 20:47:42,199 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 20:47:42,200 INFO L87 Difference]: Start difference. First operand 421 states and 596 transitions. Second operand 4 states. [2020-11-29 20:47:42,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:47:42,994 INFO L93 Difference]: Finished difference Result 990 states and 1390 transitions. [2020-11-29 20:47:42,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-29 20:47:42,995 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 123 [2020-11-29 20:47:42,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:47:42,999 INFO L225 Difference]: With dead ends: 990 [2020-11-29 20:47:42,999 INFO L226 Difference]: Without dead ends: 571 [2020-11-29 20:47:43,001 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-29 20:47:43,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 571 states. [2020-11-29 20:47:43,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 571 to 560. [2020-11-29 20:47:43,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 560 states. [2020-11-29 20:47:43,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 560 states to 560 states and 740 transitions. [2020-11-29 20:47:43,033 INFO L78 Accepts]: Start accepts. Automaton has 560 states and 740 transitions. Word has length 123 [2020-11-29 20:47:43,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:47:43,035 INFO L481 AbstractCegarLoop]: Abstraction has 560 states and 740 transitions. [2020-11-29 20:47:43,035 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 20:47:43,035 INFO L276 IsEmpty]: Start isEmpty. Operand 560 states and 740 transitions. [2020-11-29 20:47:43,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2020-11-29 20:47:43,039 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:47:43,039 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 20:47:43,039 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-29 20:47:43,039 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 20:47:43,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:47:43,040 INFO L82 PathProgramCache]: Analyzing trace with hash -1673786615, now seen corresponding path program 1 times [2020-11-29 20:47:43,040 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:47:43,040 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1026809220] [2020-11-29 20:47:43,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:47:43,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:47:43,241 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 150 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 20:47:43,241 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1026809220] [2020-11-29 20:47:43,242 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 20:47:43,242 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-29 20:47:43,243 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1811770282] [2020-11-29 20:47:43,243 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-29 20:47:43,244 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:47:43,244 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-29 20:47:43,244 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 20:47:43,245 INFO L87 Difference]: Start difference. First operand 560 states and 740 transitions. Second operand 3 states. [2020-11-29 20:47:43,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:47:43,872 INFO L93 Difference]: Finished difference Result 1257 states and 1713 transitions. [2020-11-29 20:47:43,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-29 20:47:43,872 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 189 [2020-11-29 20:47:43,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:47:43,879 INFO L225 Difference]: With dead ends: 1257 [2020-11-29 20:47:43,879 INFO L226 Difference]: Without dead ends: 838 [2020-11-29 20:47:43,882 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 20:47:43,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 838 states. [2020-11-29 20:47:43,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 838 to 838. [2020-11-29 20:47:43,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 838 states. [2020-11-29 20:47:43,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 838 states to 838 states and 1039 transitions. [2020-11-29 20:47:43,907 INFO L78 Accepts]: Start accepts. Automaton has 838 states and 1039 transitions. Word has length 189 [2020-11-29 20:47:43,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:47:43,908 INFO L481 AbstractCegarLoop]: Abstraction has 838 states and 1039 transitions. [2020-11-29 20:47:43,908 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-29 20:47:43,908 INFO L276 IsEmpty]: Start isEmpty. Operand 838 states and 1039 transitions. [2020-11-29 20:47:43,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2020-11-29 20:47:43,911 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:47:43,912 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 20:47:43,912 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-29 20:47:43,912 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 20:47:43,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:47:43,913 INFO L82 PathProgramCache]: Analyzing trace with hash 1619231775, now seen corresponding path program 1 times [2020-11-29 20:47:43,913 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:47:43,914 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1750824323] [2020-11-29 20:47:43,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:47:43,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:47:44,288 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 159 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 20:47:44,289 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1750824323] [2020-11-29 20:47:44,289 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 20:47:44,289 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-29 20:47:44,289 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1018037934] [2020-11-29 20:47:44,290 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-29 20:47:44,290 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:47:44,291 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-29 20:47:44,291 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2020-11-29 20:47:44,292 INFO L87 Difference]: Start difference. First operand 838 states and 1039 transitions. Second operand 7 states. [2020-11-29 20:47:44,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:47:44,955 INFO L93 Difference]: Finished difference Result 1590 states and 1987 transitions. [2020-11-29 20:47:44,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-29 20:47:44,956 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 198 [2020-11-29 20:47:44,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:47:44,965 INFO L225 Difference]: With dead ends: 1590 [2020-11-29 20:47:44,966 INFO L226 Difference]: Without dead ends: 838 [2020-11-29 20:47:44,967 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2020-11-29 20:47:44,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 838 states. [2020-11-29 20:47:44,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 838 to 838. [2020-11-29 20:47:44,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 838 states. [2020-11-29 20:47:44,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 838 states to 838 states and 1035 transitions. [2020-11-29 20:47:44,991 INFO L78 Accepts]: Start accepts. Automaton has 838 states and 1035 transitions. Word has length 198 [2020-11-29 20:47:44,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:47:44,991 INFO L481 AbstractCegarLoop]: Abstraction has 838 states and 1035 transitions. [2020-11-29 20:47:44,991 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-29 20:47:44,992 INFO L276 IsEmpty]: Start isEmpty. Operand 838 states and 1035 transitions. [2020-11-29 20:47:44,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2020-11-29 20:47:44,996 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:47:44,996 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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] [2020-11-29 20:47:45,003 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-29 20:47:45,003 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 20:47:45,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:47:45,005 INFO L82 PathProgramCache]: Analyzing trace with hash 1553961657, now seen corresponding path program 1 times [2020-11-29 20:47:45,005 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:47:45,005 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1787710208] [2020-11-29 20:47:45,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:47:45,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:47:45,240 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 162 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 20:47:45,241 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1787710208] [2020-11-29 20:47:45,241 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 20:47:45,242 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-29 20:47:45,242 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [594575710] [2020-11-29 20:47:45,243 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-29 20:47:45,243 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:47:45,243 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-29 20:47:45,244 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 20:47:45,244 INFO L87 Difference]: Start difference. First operand 838 states and 1035 transitions. Second operand 3 states. [2020-11-29 20:47:45,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:47:45,912 INFO L93 Difference]: Finished difference Result 1952 states and 2515 transitions. [2020-11-29 20:47:45,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-29 20:47:45,913 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 234 [2020-11-29 20:47:45,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:47:45,921 INFO L225 Difference]: With dead ends: 1952 [2020-11-29 20:47:45,921 INFO L226 Difference]: Without dead ends: 1255 [2020-11-29 20:47:45,923 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 20:47:45,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1255 states. [2020-11-29 20:47:45,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1255 to 1116. [2020-11-29 20:47:45,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1116 states. [2020-11-29 20:47:45,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1116 states to 1116 states and 1363 transitions. [2020-11-29 20:47:45,954 INFO L78 Accepts]: Start accepts. Automaton has 1116 states and 1363 transitions. Word has length 234 [2020-11-29 20:47:45,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:47:45,955 INFO L481 AbstractCegarLoop]: Abstraction has 1116 states and 1363 transitions. [2020-11-29 20:47:45,964 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-29 20:47:45,964 INFO L276 IsEmpty]: Start isEmpty. Operand 1116 states and 1363 transitions. [2020-11-29 20:47:45,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 289 [2020-11-29 20:47:45,969 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:47:45,970 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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, 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] [2020-11-29 20:47:45,970 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-11-29 20:47:45,970 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 20:47:45,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:47:45,971 INFO L82 PathProgramCache]: Analyzing trace with hash 1934752960, now seen corresponding path program 1 times [2020-11-29 20:47:45,971 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:47:45,971 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [998363749] [2020-11-29 20:47:45,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:47:46,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:47:46,436 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 33 proven. 52 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2020-11-29 20:47:46,437 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [998363749] [2020-11-29 20:47:46,437 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [720542972] [2020-11-29 20:47:46,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b7892da7-3d55-4aeb-a0e0-82f556663682/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 20:47:46,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:47:46,556 INFO L263 TraceCheckSpWp]: Trace formula consists of 408 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-29 20:47:46,575 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 20:47:46,703 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 85 proven. 0 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2020-11-29 20:47:46,703 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-11-29 20:47:46,703 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2020-11-29 20:47:46,704 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1428249665] [2020-11-29 20:47:46,704 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-29 20:47:46,704 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:47:46,705 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-29 20:47:46,705 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-29 20:47:46,705 INFO L87 Difference]: Start difference. First operand 1116 states and 1363 transitions. Second operand 3 states. [2020-11-29 20:47:47,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:47:47,322 INFO L93 Difference]: Finished difference Result 1674 states and 2006 transitions. [2020-11-29 20:47:47,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-29 20:47:47,322 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 288 [2020-11-29 20:47:47,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:47:47,332 INFO L225 Difference]: With dead ends: 1674 [2020-11-29 20:47:47,332 INFO L226 Difference]: Without dead ends: 1672 [2020-11-29 20:47:47,332 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 291 GetRequests, 287 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-29 20:47:47,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1672 states. [2020-11-29 20:47:47,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1672 to 1116. [2020-11-29 20:47:47,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1116 states. [2020-11-29 20:47:47,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1116 states to 1116 states and 1363 transitions. [2020-11-29 20:47:47,362 INFO L78 Accepts]: Start accepts. Automaton has 1116 states and 1363 transitions. Word has length 288 [2020-11-29 20:47:47,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:47:47,363 INFO L481 AbstractCegarLoop]: Abstraction has 1116 states and 1363 transitions. [2020-11-29 20:47:47,363 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-29 20:47:47,363 INFO L276 IsEmpty]: Start isEmpty. Operand 1116 states and 1363 transitions. [2020-11-29 20:47:47,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 291 [2020-11-29 20:47:47,368 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:47:47,368 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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, 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] [2020-11-29 20:47:47,581 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 20:47:47,581 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 20:47:47,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:47:47,582 INFO L82 PathProgramCache]: Analyzing trace with hash 1259614339, now seen corresponding path program 1 times [2020-11-29 20:47:47,582 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:47:47,582 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [268829131] [2020-11-29 20:47:47,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:47:47,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:47:48,212 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 85 proven. 114 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 20:47:48,213 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [268829131] [2020-11-29 20:47:48,213 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [944708912] [2020-11-29 20:47:48,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b7892da7-3d55-4aeb-a0e0-82f556663682/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 20:47:48,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:47:48,324 INFO L263 TraceCheckSpWp]: Trace formula consists of 406 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-29 20:47:48,335 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 20:47:48,431 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 85 proven. 0 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2020-11-29 20:47:48,431 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-11-29 20:47:48,431 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2020-11-29 20:47:48,432 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1268330363] [2020-11-29 20:47:48,432 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-29 20:47:48,432 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:47:48,433 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-29 20:47:48,433 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-29 20:47:48,433 INFO L87 Difference]: Start difference. First operand 1116 states and 1363 transitions. Second operand 3 states. [2020-11-29 20:47:49,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:47:49,041 INFO L93 Difference]: Finished difference Result 2369 states and 2958 transitions. [2020-11-29 20:47:49,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-29 20:47:49,042 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 290 [2020-11-29 20:47:49,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:47:49,049 INFO L225 Difference]: With dead ends: 2369 [2020-11-29 20:47:49,050 INFO L226 Difference]: Without dead ends: 1394 [2020-11-29 20:47:49,051 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 294 GetRequests, 289 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-29 20:47:49,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1394 states. [2020-11-29 20:47:49,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1394 to 1255. [2020-11-29 20:47:49,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1255 states. [2020-11-29 20:47:49,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1255 states to 1255 states and 1527 transitions. [2020-11-29 20:47:49,088 INFO L78 Accepts]: Start accepts. Automaton has 1255 states and 1527 transitions. Word has length 290 [2020-11-29 20:47:49,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:47:49,089 INFO L481 AbstractCegarLoop]: Abstraction has 1255 states and 1527 transitions. [2020-11-29 20:47:49,089 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-29 20:47:49,089 INFO L276 IsEmpty]: Start isEmpty. Operand 1255 states and 1527 transitions. [2020-11-29 20:47:49,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 341 [2020-11-29 20:47:49,096 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:47:49,096 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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] [2020-11-29 20:47:49,309 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 20:47:49,309 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 20:47:49,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:47:49,310 INFO L82 PathProgramCache]: Analyzing trace with hash -1842225074, now seen corresponding path program 1 times [2020-11-29 20:47:49,310 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:47:49,310 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1631305379] [2020-11-29 20:47:49,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:47:49,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:47:49,550 INFO L134 CoverageAnalysis]: Checked inductivity of 373 backedges. 306 proven. 0 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2020-11-29 20:47:49,550 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1631305379] [2020-11-29 20:47:49,551 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 20:47:49,551 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-29 20:47:49,551 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2012615017] [2020-11-29 20:47:49,552 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-29 20:47:49,552 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:47:49,552 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-29 20:47:49,552 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 20:47:49,553 INFO L87 Difference]: Start difference. First operand 1255 states and 1527 transitions. Second operand 3 states. [2020-11-29 20:47:50,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:47:50,172 INFO L93 Difference]: Finished difference Result 3064 states and 3738 transitions. [2020-11-29 20:47:50,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-29 20:47:50,172 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 340 [2020-11-29 20:47:50,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:47:50,182 INFO L225 Difference]: With dead ends: 3064 [2020-11-29 20:47:50,182 INFO L226 Difference]: Without dead ends: 1950 [2020-11-29 20:47:50,184 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 20:47:50,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1950 states. [2020-11-29 20:47:50,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1950 to 1950. [2020-11-29 20:47:50,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1950 states. [2020-11-29 20:47:50,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1950 states to 1950 states and 2297 transitions. [2020-11-29 20:47:50,231 INFO L78 Accepts]: Start accepts. Automaton has 1950 states and 2297 transitions. Word has length 340 [2020-11-29 20:47:50,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:47:50,232 INFO L481 AbstractCegarLoop]: Abstraction has 1950 states and 2297 transitions. [2020-11-29 20:47:50,232 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-29 20:47:50,232 INFO L276 IsEmpty]: Start isEmpty. Operand 1950 states and 2297 transitions. [2020-11-29 20:47:50,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 354 [2020-11-29 20:47:50,242 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:47:50,242 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-11-29 20:47:50,242 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-11-29 20:47:50,242 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 20:47:50,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:47:50,243 INFO L82 PathProgramCache]: Analyzing trace with hash -1758769876, now seen corresponding path program 1 times [2020-11-29 20:47:50,243 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:47:50,243 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [806619746] [2020-11-29 20:47:50,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:47:50,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:47:50,479 INFO L134 CoverageAnalysis]: Checked inductivity of 399 backedges. 128 proven. 0 refuted. 0 times theorem prover too weak. 271 trivial. 0 not checked. [2020-11-29 20:47:50,479 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [806619746] [2020-11-29 20:47:50,479 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 20:47:50,479 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-29 20:47:50,480 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [317454819] [2020-11-29 20:47:50,480 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-29 20:47:50,480 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:47:50,481 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-29 20:47:50,482 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 20:47:50,482 INFO L87 Difference]: Start difference. First operand 1950 states and 2297 transitions. Second operand 3 states. [2020-11-29 20:47:51,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:47:51,075 INFO L93 Difference]: Finished difference Result 2091 states and 2462 transitions. [2020-11-29 20:47:51,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-29 20:47:51,076 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 353 [2020-11-29 20:47:51,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:47:51,085 INFO L225 Difference]: With dead ends: 2091 [2020-11-29 20:47:51,085 INFO L226 Difference]: Without dead ends: 2089 [2020-11-29 20:47:51,086 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 20:47:51,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2089 states. [2020-11-29 20:47:51,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2089 to 1811. [2020-11-29 20:47:51,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1811 states. [2020-11-29 20:47:51,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1811 states to 1811 states and 2147 transitions. [2020-11-29 20:47:51,132 INFO L78 Accepts]: Start accepts. Automaton has 1811 states and 2147 transitions. Word has length 353 [2020-11-29 20:47:51,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:47:51,133 INFO L481 AbstractCegarLoop]: Abstraction has 1811 states and 2147 transitions. [2020-11-29 20:47:51,133 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-29 20:47:51,133 INFO L276 IsEmpty]: Start isEmpty. Operand 1811 states and 2147 transitions. [2020-11-29 20:47:51,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 360 [2020-11-29 20:47:51,138 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:47:51,138 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-11-29 20:47:51,138 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-11-29 20:47:51,139 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 20:47:51,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:47:51,139 INFO L82 PathProgramCache]: Analyzing trace with hash -1095651397, now seen corresponding path program 1 times [2020-11-29 20:47:51,139 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:47:51,139 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [971088132] [2020-11-29 20:47:51,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:47:51,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:47:51,644 INFO L134 CoverageAnalysis]: Checked inductivity of 399 backedges. 17 proven. 111 refuted. 0 times theorem prover too weak. 271 trivial. 0 not checked. [2020-11-29 20:47:51,645 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [971088132] [2020-11-29 20:47:51,645 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2118021026] [2020-11-29 20:47:51,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b7892da7-3d55-4aeb-a0e0-82f556663682/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 20:47:51,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:47:51,767 INFO L263 TraceCheckSpWp]: Trace formula consists of 506 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-29 20:47:51,772 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 20:47:51,898 INFO L134 CoverageAnalysis]: Checked inductivity of 399 backedges. 128 proven. 0 refuted. 0 times theorem prover too weak. 271 trivial. 0 not checked. [2020-11-29 20:47:51,899 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-11-29 20:47:51,899 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2020-11-29 20:47:51,901 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [770815073] [2020-11-29 20:47:51,902 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-29 20:47:51,902 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:47:51,903 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-29 20:47:51,907 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-29 20:47:51,907 INFO L87 Difference]: Start difference. First operand 1811 states and 2147 transitions. Second operand 3 states. [2020-11-29 20:47:52,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:47:52,559 INFO L93 Difference]: Finished difference Result 3479 states and 4148 transitions. [2020-11-29 20:47:52,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-29 20:47:52,560 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 359 [2020-11-29 20:47:52,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:47:52,561 INFO L225 Difference]: With dead ends: 3479 [2020-11-29 20:47:52,561 INFO L226 Difference]: Without dead ends: 0 [2020-11-29 20:47:52,565 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 362 GetRequests, 358 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-29 20:47:52,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-29 20:47:52,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-29 20:47:52,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-29 20:47:52,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-29 20:47:52,566 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 359 [2020-11-29 20:47:52,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:47:52,566 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-29 20:47:52,566 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-29 20:47:52,566 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-29 20:47:52,566 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-29 20:47:52,767 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 20:47:52,768 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-29 20:47:53,008 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 22 [2020-11-29 20:47:53,150 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 22 [2020-11-29 20:47:53,154 INFO L274 CegarLoopResult]: For program point L597(line 597) no Hoare annotation was computed. [2020-11-29 20:47:53,154 INFO L274 CegarLoopResult]: For program point L564(lines 564 582) no Hoare annotation was computed. [2020-11-29 20:47:53,154 INFO L274 CegarLoopResult]: For program point L333(lines 333 582) no Hoare annotation was computed. [2020-11-29 20:47:53,154 INFO L274 CegarLoopResult]: For program point L367(lines 367 582) no Hoare annotation was computed. [2020-11-29 20:47:53,154 INFO L274 CegarLoopResult]: For program point L301(lines 301 582) no Hoare annotation was computed. [2020-11-29 20:47:53,154 INFO L274 CegarLoopResult]: For program point L235(lines 235 582) no Hoare annotation was computed. [2020-11-29 20:47:53,155 INFO L274 CegarLoopResult]: For program point L202-1(lines 30 584) no Hoare annotation was computed. [2020-11-29 20:47:53,155 INFO L274 CegarLoopResult]: For program point L169-1(lines 30 584) no Hoare annotation was computed. [2020-11-29 20:47:53,155 INFO L274 CegarLoopResult]: For program point L136-1(lines 30 584) no Hoare annotation was computed. [2020-11-29 20:47:53,155 INFO L274 CegarLoopResult]: For program point L103-1(lines 30 584) no Hoare annotation was computed. [2020-11-29 20:47:53,155 INFO L274 CegarLoopResult]: For program point L70-1(lines 30 584) no Hoare annotation was computed. [2020-11-29 20:47:53,155 INFO L274 CegarLoopResult]: For program point L37-1(lines 30 584) no Hoare annotation was computed. [2020-11-29 20:47:53,155 INFO L274 CegarLoopResult]: For program point L533(lines 533 582) no Hoare annotation was computed. [2020-11-29 20:47:53,155 INFO L274 CegarLoopResult]: For program point L203(line 203) no Hoare annotation was computed. [2020-11-29 20:47:53,155 INFO L274 CegarLoopResult]: For program point L170(line 170) no Hoare annotation was computed. [2020-11-29 20:47:53,155 INFO L274 CegarLoopResult]: For program point L137(line 137) no Hoare annotation was computed. [2020-11-29 20:47:53,155 INFO L274 CegarLoopResult]: For program point L104(line 104) no Hoare annotation was computed. [2020-11-29 20:47:53,156 INFO L274 CegarLoopResult]: For program point L71(line 71) no Hoare annotation was computed. [2020-11-29 20:47:53,156 INFO L274 CegarLoopResult]: For program point L38(line 38) no Hoare annotation was computed. [2020-11-29 20:47:53,156 INFO L274 CegarLoopResult]: For program point L567(lines 567 582) no Hoare annotation was computed. [2020-11-29 20:47:53,156 INFO L274 CegarLoopResult]: For program point L435(lines 435 582) no Hoare annotation was computed. [2020-11-29 20:47:53,156 INFO L274 CegarLoopResult]: For program point L336(lines 336 582) no Hoare annotation was computed. [2020-11-29 20:47:53,156 INFO L274 CegarLoopResult]: For program point L270(lines 270 582) no Hoare annotation was computed. [2020-11-29 20:47:53,156 INFO L274 CegarLoopResult]: For program point L403(lines 403 582) no Hoare annotation was computed. [2020-11-29 20:47:53,156 INFO L274 CegarLoopResult]: For program point L370(lines 370 582) no Hoare annotation was computed. [2020-11-29 20:47:53,156 INFO L274 CegarLoopResult]: For program point L205-1(lines 30 584) no Hoare annotation was computed. [2020-11-29 20:47:53,156 INFO L274 CegarLoopResult]: For program point L172-1(lines 30 584) no Hoare annotation was computed. [2020-11-29 20:47:53,156 INFO L274 CegarLoopResult]: For program point L139-1(lines 30 584) no Hoare annotation was computed. [2020-11-29 20:47:53,157 INFO L274 CegarLoopResult]: For program point L106-1(lines 30 584) no Hoare annotation was computed. [2020-11-29 20:47:53,157 INFO L274 CegarLoopResult]: For program point L73-1(lines 30 584) no Hoare annotation was computed. [2020-11-29 20:47:53,157 INFO L274 CegarLoopResult]: For program point L40-1(lines 30 584) no Hoare annotation was computed. [2020-11-29 20:47:53,157 INFO L274 CegarLoopResult]: For program point L536(lines 536 582) no Hoare annotation was computed. [2020-11-29 20:47:53,157 INFO L274 CegarLoopResult]: For program point L503(lines 503 582) no Hoare annotation was computed. [2020-11-29 20:47:53,157 INFO L274 CegarLoopResult]: For program point L470(lines 470 582) no Hoare annotation was computed. [2020-11-29 20:47:53,157 INFO L274 CegarLoopResult]: For program point L206(line 206) no Hoare annotation was computed. [2020-11-29 20:47:53,157 INFO L274 CegarLoopResult]: For program point L173(line 173) no Hoare annotation was computed. [2020-11-29 20:47:53,157 INFO L274 CegarLoopResult]: For program point L140(line 140) no Hoare annotation was computed. [2020-11-29 20:47:53,157 INFO L274 CegarLoopResult]: For program point L107(line 107) no Hoare annotation was computed. [2020-11-29 20:47:53,157 INFO L274 CegarLoopResult]: For program point L74(line 74) no Hoare annotation was computed. [2020-11-29 20:47:53,157 INFO L274 CegarLoopResult]: For program point L41(line 41) no Hoare annotation was computed. [2020-11-29 20:47:53,158 INFO L274 CegarLoopResult]: For program point L339(lines 339 582) no Hoare annotation was computed. [2020-11-29 20:47:53,158 INFO L274 CegarLoopResult]: For program point L306(lines 306 582) no Hoare annotation was computed. [2020-11-29 20:47:53,158 INFO L274 CegarLoopResult]: For program point L241(lines 241 582) no Hoare annotation was computed. [2020-11-29 20:47:53,158 INFO L274 CegarLoopResult]: For program point L208-1(lines 30 584) no Hoare annotation was computed. [2020-11-29 20:47:53,158 INFO L274 CegarLoopResult]: For program point L175-1(lines 30 584) no Hoare annotation was computed. [2020-11-29 20:47:53,158 INFO L274 CegarLoopResult]: For program point L142-1(lines 30 584) no Hoare annotation was computed. [2020-11-29 20:47:53,158 INFO L274 CegarLoopResult]: For program point L109-1(lines 30 584) no Hoare annotation was computed. [2020-11-29 20:47:53,158 INFO L274 CegarLoopResult]: For program point L76-1(lines 30 584) no Hoare annotation was computed. [2020-11-29 20:47:53,158 INFO L274 CegarLoopResult]: For program point L43-1(lines 30 584) no Hoare annotation was computed. [2020-11-29 20:47:53,158 INFO L274 CegarLoopResult]: For program point L539(lines 539 582) no Hoare annotation was computed. [2020-11-29 20:47:53,158 INFO L274 CegarLoopResult]: For program point L440(lines 440 582) no Hoare annotation was computed. [2020-11-29 20:47:53,159 INFO L274 CegarLoopResult]: For program point L275(lines 275 582) no Hoare annotation was computed. [2020-11-29 20:47:53,159 INFO L274 CegarLoopResult]: For program point L209(line 209) no Hoare annotation was computed. [2020-11-29 20:47:53,159 INFO L274 CegarLoopResult]: For program point L176(line 176) no Hoare annotation was computed. [2020-11-29 20:47:53,159 INFO L274 CegarLoopResult]: For program point L143(line 143) no Hoare annotation was computed. [2020-11-29 20:47:53,159 INFO L274 CegarLoopResult]: For program point L110(line 110) no Hoare annotation was computed. [2020-11-29 20:47:53,159 INFO L274 CegarLoopResult]: For program point L77(line 77) no Hoare annotation was computed. [2020-11-29 20:47:53,159 INFO L274 CegarLoopResult]: For program point L44(line 44) no Hoare annotation was computed. [2020-11-29 20:47:53,159 INFO L274 CegarLoopResult]: For program point L573(lines 573 582) no Hoare annotation was computed. [2020-11-29 20:47:53,159 INFO L274 CegarLoopResult]: For program point L408(lines 408 582) no Hoare annotation was computed. [2020-11-29 20:47:53,159 INFO L274 CegarLoopResult]: For program point L375(lines 375 582) no Hoare annotation was computed. [2020-11-29 20:47:53,159 INFO L274 CegarLoopResult]: For program point L12(line 12) no Hoare annotation was computed. [2020-11-29 20:47:53,160 INFO L274 CegarLoopResult]: For program point L475(lines 475 582) no Hoare annotation was computed. [2020-11-29 20:47:53,160 INFO L274 CegarLoopResult]: For program point L211-1(lines 30 584) no Hoare annotation was computed. [2020-11-29 20:47:53,160 INFO L274 CegarLoopResult]: For program point L178-1(lines 30 584) no Hoare annotation was computed. [2020-11-29 20:47:53,160 INFO L274 CegarLoopResult]: For program point L145-1(lines 30 584) no Hoare annotation was computed. [2020-11-29 20:47:53,160 INFO L274 CegarLoopResult]: For program point L112-1(lines 30 584) no Hoare annotation was computed. [2020-11-29 20:47:53,160 INFO L274 CegarLoopResult]: For program point L79-1(lines 30 584) no Hoare annotation was computed. [2020-11-29 20:47:53,160 INFO L274 CegarLoopResult]: For program point L46-1(lines 30 584) no Hoare annotation was computed. [2020-11-29 20:47:53,160 INFO L274 CegarLoopResult]: For program point L509(lines 509 582) no Hoare annotation was computed. [2020-11-29 20:47:53,160 INFO L274 CegarLoopResult]: For program point L311(lines 311 582) no Hoare annotation was computed. [2020-11-29 20:47:53,160 INFO L274 CegarLoopResult]: For program point L212(line 212) no Hoare annotation was computed. [2020-11-29 20:47:53,160 INFO L274 CegarLoopResult]: For program point L179(line 179) no Hoare annotation was computed. [2020-11-29 20:47:53,160 INFO L274 CegarLoopResult]: For program point L146(line 146) no Hoare annotation was computed. [2020-11-29 20:47:53,161 INFO L274 CegarLoopResult]: For program point L113(line 113) no Hoare annotation was computed. [2020-11-29 20:47:53,161 INFO L274 CegarLoopResult]: For program point L80(line 80) no Hoare annotation was computed. [2020-11-29 20:47:53,161 INFO L274 CegarLoopResult]: For program point L47(line 47) no Hoare annotation was computed. [2020-11-29 20:47:53,161 INFO L274 CegarLoopResult]: For program point L345(lines 345 582) no Hoare annotation was computed. [2020-11-29 20:47:53,161 INFO L274 CegarLoopResult]: For program point L246(lines 246 582) no Hoare annotation was computed. [2020-11-29 20:47:53,161 INFO L274 CegarLoopResult]: For program point L544(lines 544 582) no Hoare annotation was computed. [2020-11-29 20:47:53,161 INFO L274 CegarLoopResult]: For program point L181-1(lines 30 584) no Hoare annotation was computed. [2020-11-29 20:47:53,161 INFO L274 CegarLoopResult]: For program point L148-1(lines 30 584) no Hoare annotation was computed. [2020-11-29 20:47:53,161 INFO L274 CegarLoopResult]: For program point L115-1(lines 30 584) no Hoare annotation was computed. [2020-11-29 20:47:53,161 INFO L274 CegarLoopResult]: For program point L82-1(lines 30 584) no Hoare annotation was computed. [2020-11-29 20:47:53,161 INFO L274 CegarLoopResult]: For program point L49-1(lines 30 584) no Hoare annotation was computed. [2020-11-29 20:47:53,162 INFO L274 CegarLoopResult]: For program point L446(lines 446 582) no Hoare annotation was computed. [2020-11-29 20:47:53,162 INFO L274 CegarLoopResult]: For program point L413(lines 413 582) no Hoare annotation was computed. [2020-11-29 20:47:53,162 INFO L274 CegarLoopResult]: For program point L380(lines 380 582) no Hoare annotation was computed. [2020-11-29 20:47:53,162 INFO L274 CegarLoopResult]: For program point L281(lines 281 582) no Hoare annotation was computed. [2020-11-29 20:47:53,162 INFO L274 CegarLoopResult]: For program point L182(line 182) no Hoare annotation was computed. [2020-11-29 20:47:53,162 INFO L274 CegarLoopResult]: For program point L149(line 149) no Hoare annotation was computed. [2020-11-29 20:47:53,162 INFO L274 CegarLoopResult]: For program point L116(line 116) no Hoare annotation was computed. [2020-11-29 20:47:53,162 INFO L274 CegarLoopResult]: For program point L83(line 83) no Hoare annotation was computed. [2020-11-29 20:47:53,162 INFO L274 CegarLoopResult]: For program point L50(line 50) no Hoare annotation was computed. [2020-11-29 20:47:53,162 INFO L274 CegarLoopResult]: For program point L579(lines 579 582) no Hoare annotation was computed. [2020-11-29 20:47:53,162 INFO L274 CegarLoopResult]: For program point L249(lines 249 582) no Hoare annotation was computed. [2020-11-29 20:47:53,163 INFO L274 CegarLoopResult]: For program point L514(lines 514 582) no Hoare annotation was computed. [2020-11-29 20:47:53,163 INFO L274 CegarLoopResult]: For program point L481(lines 481 582) no Hoare annotation was computed. [2020-11-29 20:47:53,163 INFO L274 CegarLoopResult]: For program point L316(lines 316 582) no Hoare annotation was computed. [2020-11-29 20:47:53,163 INFO L274 CegarLoopResult]: For program point L184-1(lines 30 584) no Hoare annotation was computed. [2020-11-29 20:47:53,163 INFO L274 CegarLoopResult]: For program point L151-1(lines 30 584) no Hoare annotation was computed. [2020-11-29 20:47:53,163 INFO L274 CegarLoopResult]: For program point L118-1(lines 30 584) no Hoare annotation was computed. [2020-11-29 20:47:53,163 INFO L274 CegarLoopResult]: For program point L85-1(lines 30 584) no Hoare annotation was computed. [2020-11-29 20:47:53,163 INFO L274 CegarLoopResult]: For program point L52-1(lines 30 584) no Hoare annotation was computed. [2020-11-29 20:47:53,163 INFO L274 CegarLoopResult]: For program point L350(lines 350 582) no Hoare annotation was computed. [2020-11-29 20:47:53,163 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-11-29 20:47:53,165 INFO L274 CegarLoopResult]: For program point L185(line 185) no Hoare annotation was computed. [2020-11-29 20:47:53,165 INFO L274 CegarLoopResult]: For program point L152(line 152) no Hoare annotation was computed. [2020-11-29 20:47:53,165 INFO L274 CegarLoopResult]: For program point L119(line 119) no Hoare annotation was computed. [2020-11-29 20:47:53,165 INFO L274 CegarLoopResult]: For program point L86(line 86) no Hoare annotation was computed. [2020-11-29 20:47:53,165 INFO L274 CegarLoopResult]: For program point L53(line 53) no Hoare annotation was computed. [2020-11-29 20:47:53,166 INFO L270 CegarLoopResult]: At program point L583(lines 30 584) the Hoare annotation is: (let ((.cse3 (<= ~a19~0 9)) (.cse0 (= 14 ~a4~0)) (.cse2 (<= 7 ~a19~0)) (.cse1 (= ~a12~0 0))) (or (and (<= ~a10~0 0) .cse0 .cse1) (and .cse0 .cse2 .cse1 .cse3) (and (<= 3 ~a10~0) .cse0 .cse1 .cse3) (and (= ~a10~0 1) .cse0 .cse2 .cse1))) [2020-11-29 20:47:53,166 INFO L274 CegarLoopResult]: For program point L550(lines 550 582) no Hoare annotation was computed. [2020-11-29 20:47:53,166 INFO L274 CegarLoopResult]: For program point L418(lines 418 582) no Hoare annotation was computed. [2020-11-29 20:47:53,166 INFO L274 CegarLoopResult]: For program point L385(lines 385 582) no Hoare annotation was computed. [2020-11-29 20:47:53,166 INFO L274 CegarLoopResult]: For program point L220(lines 220 582) no Hoare annotation was computed. [2020-11-29 20:47:53,166 INFO L274 CegarLoopResult]: For program point L187-1(lines 30 584) no Hoare annotation was computed. [2020-11-29 20:47:53,166 INFO L274 CegarLoopResult]: For program point L154-1(lines 30 584) no Hoare annotation was computed. [2020-11-29 20:47:53,166 INFO L274 CegarLoopResult]: For program point L121-1(lines 30 584) no Hoare annotation was computed. [2020-11-29 20:47:53,166 INFO L274 CegarLoopResult]: For program point L88-1(lines 30 584) no Hoare annotation was computed. [2020-11-29 20:47:53,166 INFO L274 CegarLoopResult]: For program point L55-1(lines 30 584) no Hoare annotation was computed. [2020-11-29 20:47:53,166 INFO L274 CegarLoopResult]: For program point L452(lines 452 582) no Hoare annotation was computed. [2020-11-29 20:47:53,166 INFO L274 CegarLoopResult]: For program point L287(lines 287 582) no Hoare annotation was computed. [2020-11-29 20:47:53,167 INFO L274 CegarLoopResult]: For program point L254(lines 254 582) no Hoare annotation was computed. [2020-11-29 20:47:53,167 INFO L274 CegarLoopResult]: For program point L188(line 188) no Hoare annotation was computed. [2020-11-29 20:47:53,167 INFO L274 CegarLoopResult]: For program point L155(line 155) no Hoare annotation was computed. [2020-11-29 20:47:53,167 INFO L274 CegarLoopResult]: For program point L122(line 122) no Hoare annotation was computed. [2020-11-29 20:47:53,167 INFO L274 CegarLoopResult]: For program point L89(line 89) no Hoare annotation was computed. [2020-11-29 20:47:53,167 INFO L274 CegarLoopResult]: For program point L56(line 56) no Hoare annotation was computed. [2020-11-29 20:47:53,167 INFO L274 CegarLoopResult]: For program point L519(lines 519 582) no Hoare annotation was computed. [2020-11-29 20:47:53,167 INFO L274 CegarLoopResult]: For program point L486(lines 486 582) no Hoare annotation was computed. [2020-11-29 20:47:53,167 INFO L277 CegarLoopResult]: At program point L586(lines 586 602) the Hoare annotation is: true [2020-11-29 20:47:53,167 INFO L274 CegarLoopResult]: For program point L388(lines 388 582) no Hoare annotation was computed. [2020-11-29 20:47:53,167 INFO L274 CegarLoopResult]: For program point L355(lines 355 582) no Hoare annotation was computed. [2020-11-29 20:47:53,167 INFO L274 CegarLoopResult]: For program point L322(lines 322 582) no Hoare annotation was computed. [2020-11-29 20:47:53,167 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-29 20:47:53,168 INFO L274 CegarLoopResult]: For program point L190-1(lines 30 584) no Hoare annotation was computed. [2020-11-29 20:47:53,168 INFO L274 CegarLoopResult]: For program point L157-1(lines 30 584) no Hoare annotation was computed. [2020-11-29 20:47:53,168 INFO L274 CegarLoopResult]: For program point L124-1(lines 30 584) no Hoare annotation was computed. [2020-11-29 20:47:53,168 INFO L274 CegarLoopResult]: For program point L91-1(lines 30 584) no Hoare annotation was computed. [2020-11-29 20:47:53,168 INFO L274 CegarLoopResult]: For program point L58-1(lines 30 584) no Hoare annotation was computed. [2020-11-29 20:47:53,168 INFO L274 CegarLoopResult]: For program point L191(line 191) no Hoare annotation was computed. [2020-11-29 20:47:53,168 INFO L274 CegarLoopResult]: For program point L158(line 158) no Hoare annotation was computed. [2020-11-29 20:47:53,168 INFO L274 CegarLoopResult]: For program point L125(line 125) no Hoare annotation was computed. [2020-11-29 20:47:53,168 INFO L274 CegarLoopResult]: For program point L92(line 92) no Hoare annotation was computed. [2020-11-29 20:47:53,168 INFO L274 CegarLoopResult]: For program point L59(line 59) no Hoare annotation was computed. [2020-11-29 20:47:53,168 INFO L274 CegarLoopResult]: For program point L555(lines 555 582) no Hoare annotation was computed. [2020-11-29 20:47:53,168 INFO L274 CegarLoopResult]: For program point L225(lines 225 582) no Hoare annotation was computed. [2020-11-29 20:47:53,169 INFO L274 CegarLoopResult]: For program point L424(lines 424 582) no Hoare annotation was computed. [2020-11-29 20:47:53,169 INFO L274 CegarLoopResult]: For program point L259(lines 259 582) no Hoare annotation was computed. [2020-11-29 20:47:53,169 INFO L274 CegarLoopResult]: For program point L193-1(lines 30 584) no Hoare annotation was computed. [2020-11-29 20:47:53,169 INFO L274 CegarLoopResult]: For program point L160-1(lines 30 584) no Hoare annotation was computed. [2020-11-29 20:47:53,169 INFO L274 CegarLoopResult]: For program point L127-1(lines 30 584) no Hoare annotation was computed. [2020-11-29 20:47:53,170 INFO L274 CegarLoopResult]: For program point L94-1(lines 30 584) no Hoare annotation was computed. [2020-11-29 20:47:53,170 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-11-29 20:47:53,170 INFO L274 CegarLoopResult]: For program point L61-1(lines 30 584) no Hoare annotation was computed. [2020-11-29 20:47:53,170 INFO L274 CegarLoopResult]: For program point L524(lines 524 582) no Hoare annotation was computed. [2020-11-29 20:47:53,170 INFO L274 CegarLoopResult]: For program point L491(lines 491 582) no Hoare annotation was computed. [2020-11-29 20:47:53,170 INFO L274 CegarLoopResult]: For program point L458(lines 458 582) no Hoare annotation was computed. [2020-11-29 20:47:53,170 INFO L274 CegarLoopResult]: For program point L293(lines 293 582) no Hoare annotation was computed. [2020-11-29 20:47:53,170 INFO L274 CegarLoopResult]: For program point L194(line 194) no Hoare annotation was computed. [2020-11-29 20:47:53,170 INFO L274 CegarLoopResult]: For program point L161(line 161) no Hoare annotation was computed. [2020-11-29 20:47:53,170 INFO L274 CegarLoopResult]: For program point L128(line 128) no Hoare annotation was computed. [2020-11-29 20:47:53,170 INFO L274 CegarLoopResult]: For program point L95(line 95) no Hoare annotation was computed. [2020-11-29 20:47:53,170 INFO L274 CegarLoopResult]: For program point L62(line 62) no Hoare annotation was computed. [2020-11-29 20:47:53,171 INFO L274 CegarLoopResult]: For program point L558(lines 558 582) no Hoare annotation was computed. [2020-11-29 20:47:53,171 INFO L274 CegarLoopResult]: For program point L393(lines 393 582) no Hoare annotation was computed. [2020-11-29 20:47:53,171 INFO L274 CegarLoopResult]: For program point L327(lines 327 582) no Hoare annotation was computed. [2020-11-29 20:47:53,172 INFO L270 CegarLoopResult]: At program point L592-2(lines 592 601) the Hoare annotation is: (let ((.cse3 (<= ~a19~0 9)) (.cse0 (= 14 ~a4~0)) (.cse2 (<= 7 ~a19~0)) (.cse1 (= ~a12~0 0))) (or (and (<= ~a10~0 0) .cse0 .cse1) (and .cse0 .cse2 .cse1 .cse3) (and (<= 3 ~a10~0) .cse0 .cse1 .cse3) (and (= ~a10~0 1) .cse0 .cse2 .cse1))) [2020-11-29 20:47:53,172 INFO L274 CegarLoopResult]: For program point L361(lines 361 582) no Hoare annotation was computed. [2020-11-29 20:47:53,172 INFO L274 CegarLoopResult]: For program point L196-1(lines 30 584) no Hoare annotation was computed. [2020-11-29 20:47:53,172 INFO L274 CegarLoopResult]: For program point L163-1(lines 30 584) no Hoare annotation was computed. [2020-11-29 20:47:53,172 INFO L274 CegarLoopResult]: For program point L130-1(lines 30 584) no Hoare annotation was computed. [2020-11-29 20:47:53,172 INFO L274 CegarLoopResult]: For program point L97-1(lines 30 584) no Hoare annotation was computed. [2020-11-29 20:47:53,172 INFO L274 CegarLoopResult]: For program point L31(lines 31 33) no Hoare annotation was computed. [2020-11-29 20:47:53,173 INFO L274 CegarLoopResult]: For program point L64-1(lines 30 584) no Hoare annotation was computed. [2020-11-29 20:47:53,173 INFO L274 CegarLoopResult]: For program point L31-2(lines 30 584) no Hoare annotation was computed. [2020-11-29 20:47:53,173 INFO L274 CegarLoopResult]: For program point L527(lines 527 582) no Hoare annotation was computed. [2020-11-29 20:47:53,173 INFO L274 CegarLoopResult]: For program point L296(lines 296 582) no Hoare annotation was computed. [2020-11-29 20:47:53,173 INFO L274 CegarLoopResult]: For program point L230(lines 230 582) no Hoare annotation was computed. [2020-11-29 20:47:53,173 INFO L274 CegarLoopResult]: For program point L197(line 197) no Hoare annotation was computed. [2020-11-29 20:47:53,173 INFO L274 CegarLoopResult]: For program point L164(line 164) no Hoare annotation was computed. [2020-11-29 20:47:53,173 INFO L274 CegarLoopResult]: For program point L131(line 131) no Hoare annotation was computed. [2020-11-29 20:47:53,173 INFO L274 CegarLoopResult]: For program point L98(line 98) no Hoare annotation was computed. [2020-11-29 20:47:53,173 INFO L274 CegarLoopResult]: For program point L65(line 65) no Hoare annotation was computed. [2020-11-29 20:47:53,173 INFO L274 CegarLoopResult]: For program point L32(line 32) no Hoare annotation was computed. [2020-11-29 20:47:53,173 INFO L274 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-11-29 20:47:53,174 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 12) no Hoare annotation was computed. [2020-11-29 20:47:53,174 INFO L274 CegarLoopResult]: For program point L429(lines 429 582) no Hoare annotation was computed. [2020-11-29 20:47:53,174 INFO L274 CegarLoopResult]: For program point L330(lines 330 582) no Hoare annotation was computed. [2020-11-29 20:47:53,174 INFO L274 CegarLoopResult]: For program point L264(lines 264 582) no Hoare annotation was computed. [2020-11-29 20:47:53,174 INFO L274 CegarLoopResult]: For program point L364(lines 364 582) no Hoare annotation was computed. [2020-11-29 20:47:53,174 INFO L274 CegarLoopResult]: For program point L199-1(lines 30 584) no Hoare annotation was computed. [2020-11-29 20:47:53,174 INFO L274 CegarLoopResult]: For program point L166-1(lines 30 584) no Hoare annotation was computed. [2020-11-29 20:47:53,174 INFO L274 CegarLoopResult]: For program point L133-1(lines 30 584) no Hoare annotation was computed. [2020-11-29 20:47:53,174 INFO L274 CegarLoopResult]: For program point L100-1(lines 30 584) no Hoare annotation was computed. [2020-11-29 20:47:53,174 INFO L274 CegarLoopResult]: For program point L67-1(lines 30 584) no Hoare annotation was computed. [2020-11-29 20:47:53,174 INFO L274 CegarLoopResult]: For program point L34-1(lines 30 584) no Hoare annotation was computed. [2020-11-29 20:47:53,175 INFO L274 CegarLoopResult]: For program point L497(lines 497 582) no Hoare annotation was computed. [2020-11-29 20:47:53,175 INFO L274 CegarLoopResult]: For program point L464(lines 464 582) no Hoare annotation was computed. [2020-11-29 20:47:53,175 INFO L274 CegarLoopResult]: For program point L398(lines 398 582) no Hoare annotation was computed. [2020-11-29 20:47:53,175 INFO L274 CegarLoopResult]: For program point L200(line 200) no Hoare annotation was computed. [2020-11-29 20:47:53,175 INFO L274 CegarLoopResult]: For program point L167(line 167) no Hoare annotation was computed. [2020-11-29 20:47:53,175 INFO L274 CegarLoopResult]: For program point L134(line 134) no Hoare annotation was computed. [2020-11-29 20:47:53,175 INFO L274 CegarLoopResult]: For program point L101(line 101) no Hoare annotation was computed. [2020-11-29 20:47:53,175 INFO L274 CegarLoopResult]: For program point L68(line 68) no Hoare annotation was computed. [2020-11-29 20:47:53,175 INFO L274 CegarLoopResult]: For program point L35(line 35) no Hoare annotation was computed. [2020-11-29 20:47:53,204 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.11 08:47:53 BoogieIcfgContainer [2020-11-29 20:47:53,204 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-29 20:47:53,205 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-29 20:47:53,205 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-29 20:47:53,205 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-29 20:47:53,205 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 08:47:37" (3/4) ... [2020-11-29 20:47:53,208 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-29 20:47:53,238 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2020-11-29 20:47:53,239 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-11-29 20:47:53,240 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-29 20:47:53,241 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-29 20:47:53,402 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_b7892da7-3d55-4aeb-a0e0-82f556663682/bin/uautomizer/witness.graphml [2020-11-29 20:47:53,402 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-29 20:47:53,403 INFO L168 Benchmark]: Toolchain (without parser) took 18526.43 ms. Allocated memory was 86.0 MB in the beginning and 375.4 MB in the end (delta: 289.4 MB). Free memory was 53.0 MB in the beginning and 154.1 MB in the end (delta: -101.1 MB). Peak memory consumption was 188.1 MB. Max. memory is 16.1 GB. [2020-11-29 20:47:53,403 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 86.0 MB. Free memory was 43.3 MB in the beginning and 43.2 MB in the end (delta: 37.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 20:47:53,404 INFO L168 Benchmark]: CACSL2BoogieTranslator took 675.82 ms. Allocated memory was 86.0 MB in the beginning and 117.4 MB in the end (delta: 31.5 MB). Free memory was 52.8 MB in the beginning and 78.5 MB in the end (delta: -25.7 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-11-29 20:47:53,404 INFO L168 Benchmark]: Boogie Procedure Inliner took 94.10 ms. Allocated memory is still 117.4 MB. Free memory was 78.5 MB in the beginning and 70.1 MB in the end (delta: 8.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-29 20:47:53,404 INFO L168 Benchmark]: Boogie Preprocessor took 84.37 ms. Allocated memory is still 117.4 MB. Free memory was 70.1 MB in the beginning and 65.3 MB in the end (delta: 4.8 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-29 20:47:53,405 INFO L168 Benchmark]: RCFGBuilder took 1723.60 ms. Allocated memory is still 117.4 MB. Free memory was 65.3 MB in the beginning and 54.8 MB in the end (delta: 10.6 MB). Peak memory consumption was 44.0 MB. Max. memory is 16.1 GB. [2020-11-29 20:47:53,405 INFO L168 Benchmark]: TraceAbstraction took 15744.08 ms. Allocated memory was 117.4 MB in the beginning and 375.4 MB in the end (delta: 257.9 MB). Free memory was 54.1 MB in the beginning and 168.7 MB in the end (delta: -114.6 MB). Peak memory consumption was 144.2 MB. Max. memory is 16.1 GB. [2020-11-29 20:47:53,405 INFO L168 Benchmark]: Witness Printer took 197.44 ms. Allocated memory is still 375.4 MB. Free memory was 168.7 MB in the beginning and 154.1 MB in the end (delta: 14.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2020-11-29 20:47:53,408 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 86.0 MB. Free memory was 43.3 MB in the beginning and 43.2 MB in the end (delta: 37.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 675.82 ms. Allocated memory was 86.0 MB in the beginning and 117.4 MB in the end (delta: 31.5 MB). Free memory was 52.8 MB in the beginning and 78.5 MB in the end (delta: -25.7 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 94.10 ms. Allocated memory is still 117.4 MB. Free memory was 78.5 MB in the beginning and 70.1 MB in the end (delta: 8.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 84.37 ms. Allocated memory is still 117.4 MB. Free memory was 70.1 MB in the beginning and 65.3 MB in the end (delta: 4.8 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1723.60 ms. Allocated memory is still 117.4 MB. Free memory was 65.3 MB in the beginning and 54.8 MB in the end (delta: 10.6 MB). Peak memory consumption was 44.0 MB. Max. memory is 16.1 GB. * TraceAbstraction took 15744.08 ms. Allocated memory was 117.4 MB in the beginning and 375.4 MB in the end (delta: 257.9 MB). Free memory was 54.1 MB in the beginning and 168.7 MB in the end (delta: -114.6 MB). Peak memory consumption was 144.2 MB. Max. memory is 16.1 GB. * Witness Printer took 197.44 ms. Allocated memory is still 375.4 MB. Free memory was 168.7 MB in the beginning and 154.1 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: 592]: Loop Invariant Derived loop invariant: ((((a10 <= 0 && 14 == a4) && a12 == 0) || (((14 == a4 && 7 <= a19) && a12 == 0) && a19 <= 9)) || (((3 <= a10 && 14 == a4) && a12 == 0) && a19 <= 9)) || (((a10 == 1 && 14 == a4) && 7 <= a19) && a12 == 0) - InvariantResult [Line: 30]: Loop Invariant Derived loop invariant: ((((a10 <= 0 && 14 == a4) && a12 == 0) || (((14 == a4 && 7 <= a19) && a12 == 0) && a19 <= 9)) || (((3 <= a10 && 14 == a4) && a12 == 0) && a19 <= 9)) || (((a10 == 1 && 14 == a4) && 7 <= a19) && a12 == 0) - InvariantResult [Line: 586]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 207 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 15.2s, OverallIterations: 12, TraceHistogramMax: 4, AutomataDifference: 9.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.3s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1044 SDtfs, 1378 SDslu, 62 SDs, 0 SdLazy, 4662 SolverSat, 835 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 6.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1086 GetRequests, 1056 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1950occurred in iteration=10, 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, 12 MinimizatonAttempts, 1401 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 33 NumberOfFragments, 101 HoareAnnotationTreeSize, 3 FomulaSimplifications, 2058 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 3 FomulaSimplificationsInter, 620 FormulaSimplificationTreeSizeReductionInter, 0.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 2.0s InterpolantComputationTime, 3692 NumberOfCodeBlocks, 3692 NumberOfCodeBlocksAsserted, 16 NumberOfCheckSat, 3676 ConstructedInterpolants, 0 QuantifiedInterpolants, 4016256 SizeOfPredicates, 4 NumberOfNonLiveVariables, 1523 ConjunctsInSsa, 8 ConjunctsInUnsatCore, 16 InterpolantComputations, 12 PerfectInterpolantSequences, 2678/2997 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...