./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem12_label55.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0f8a17c6 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87f4aa9b-ddb2-4078-8d14-8ebc9c1edbe0/bin/uautomizer-ZXIjhQolGL/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87f4aa9b-ddb2-4078-8d14-8ebc9c1edbe0/bin/uautomizer-ZXIjhQolGL/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87f4aa9b-ddb2-4078-8d14-8ebc9c1edbe0/bin/uautomizer-ZXIjhQolGL/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87f4aa9b-ddb2-4078-8d14-8ebc9c1edbe0/bin/uautomizer-ZXIjhQolGL/config/AutomizerReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem12_label55.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87f4aa9b-ddb2-4078-8d14-8ebc9c1edbe0/bin/uautomizer-ZXIjhQolGL/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87f4aa9b-ddb2-4078-8d14-8ebc9c1edbe0/bin/uautomizer-ZXIjhQolGL --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 fba727d7a76ab6b9efdfaecb09ee87c47b40a8cbdd36892d05e32f34590b7c75 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-19 05:33:30,284 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-19 05:33:30,287 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-19 05:33:30,343 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-19 05:33:30,344 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-19 05:33:30,349 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-19 05:33:30,353 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-19 05:33:30,357 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-19 05:33:30,360 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-19 05:33:30,368 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-19 05:33:30,369 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-19 05:33:30,371 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-19 05:33:30,372 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-19 05:33:30,374 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-19 05:33:30,377 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-19 05:33:30,380 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-19 05:33:30,382 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-19 05:33:30,383 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-19 05:33:30,389 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-19 05:33:30,400 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-19 05:33:30,402 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-19 05:33:30,403 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-19 05:33:30,407 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-19 05:33:30,408 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-19 05:33:30,412 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-19 05:33:30,412 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-19 05:33:30,413 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-19 05:33:30,415 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-19 05:33:30,416 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-19 05:33:30,417 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-19 05:33:30,418 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-19 05:33:30,419 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-19 05:33:30,421 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-19 05:33:30,422 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-19 05:33:30,424 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-19 05:33:30,425 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-19 05:33:30,425 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-19 05:33:30,426 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-19 05:33:30,426 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-19 05:33:30,427 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-19 05:33:30,429 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-19 05:33:30,430 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87f4aa9b-ddb2-4078-8d14-8ebc9c1edbe0/bin/uautomizer-ZXIjhQolGL/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-19 05:33:30,475 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-19 05:33:30,476 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-19 05:33:30,477 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-19 05:33:30,477 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-19 05:33:30,484 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-19 05:33:30,484 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-19 05:33:30,485 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-19 05:33:30,485 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-19 05:33:30,486 INFO L138 SettingsManager]: * Use SBE=true [2021-11-19 05:33:30,486 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-19 05:33:30,487 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-19 05:33:30,487 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-19 05:33:30,488 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-19 05:33:30,488 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-19 05:33:30,488 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-19 05:33:30,488 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-19 05:33:30,489 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-19 05:33:30,489 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-19 05:33:30,489 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-19 05:33:30,489 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-19 05:33:30,489 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-19 05:33:30,490 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-19 05:33:30,490 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-19 05:33:30,490 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-19 05:33:30,491 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 05:33:30,491 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-19 05:33:30,491 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-19 05:33:30,491 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-19 05:33:30,492 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-19 05:33:30,493 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-19 05:33:30,493 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-19 05:33:30,494 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-19 05:33:30,494 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-19 05:33:30,494 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-19 05:33:30,495 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_worker_vcloud-master_on_vcloud-master/run_dir_87f4aa9b-ddb2-4078-8d14-8ebc9c1edbe0/bin/uautomizer-ZXIjhQolGL/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87f4aa9b-ddb2-4078-8d14-8ebc9c1edbe0/bin/uautomizer-ZXIjhQolGL Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fba727d7a76ab6b9efdfaecb09ee87c47b40a8cbdd36892d05e32f34590b7c75 [2021-11-19 05:33:30,778 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-19 05:33:30,800 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-19 05:33:30,802 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-19 05:33:30,804 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-19 05:33:30,804 INFO L275 PluginConnector]: CDTParser initialized [2021-11-19 05:33:30,806 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87f4aa9b-ddb2-4078-8d14-8ebc9c1edbe0/bin/uautomizer-ZXIjhQolGL/../../sv-benchmarks/c/eca-rers2012/Problem12_label55.c [2021-11-19 05:33:30,871 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87f4aa9b-ddb2-4078-8d14-8ebc9c1edbe0/bin/uautomizer-ZXIjhQolGL/data/4f72b9771/175e3c4b19324a4ba61985c46d4f62e1/FLAGaf5dd4f45 [2021-11-19 05:33:31,835 INFO L306 CDTParser]: Found 1 translation units. [2021-11-19 05:33:31,836 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87f4aa9b-ddb2-4078-8d14-8ebc9c1edbe0/sv-benchmarks/c/eca-rers2012/Problem12_label55.c [2021-11-19 05:33:31,871 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87f4aa9b-ddb2-4078-8d14-8ebc9c1edbe0/bin/uautomizer-ZXIjhQolGL/data/4f72b9771/175e3c4b19324a4ba61985c46d4f62e1/FLAGaf5dd4f45 [2021-11-19 05:33:32,330 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87f4aa9b-ddb2-4078-8d14-8ebc9c1edbe0/bin/uautomizer-ZXIjhQolGL/data/4f72b9771/175e3c4b19324a4ba61985c46d4f62e1 [2021-11-19 05:33:32,332 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-19 05:33:32,333 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-19 05:33:32,335 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-19 05:33:32,335 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-19 05:33:32,338 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-19 05:33:32,339 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:33:32" (1/1) ... [2021-11-19 05:33:32,340 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3a66be7e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:33:32, skipping insertion in model container [2021-11-19 05:33:32,340 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:33:32" (1/1) ... [2021-11-19 05:33:32,347 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-19 05:33:32,498 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 05:33:32,697 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87f4aa9b-ddb2-4078-8d14-8ebc9c1edbe0/sv-benchmarks/c/eca-rers2012/Problem12_label55.c[1435,1448] [2021-11-19 05:33:33,770 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 05:33:33,780 INFO L203 MainTranslator]: Completed pre-run [2021-11-19 05:33:33,807 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87f4aa9b-ddb2-4078-8d14-8ebc9c1edbe0/sv-benchmarks/c/eca-rers2012/Problem12_label55.c[1435,1448] [2021-11-19 05:33:34,454 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 05:33:34,481 INFO L208 MainTranslator]: Completed translation [2021-11-19 05:33:34,482 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:33:34 WrapperNode [2021-11-19 05:33:34,482 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-19 05:33:34,483 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-19 05:33:34,484 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-19 05:33:34,484 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-19 05:33:34,492 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:33:34" (1/1) ... [2021-11-19 05:33:34,561 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:33:34" (1/1) ... [2021-11-19 05:33:34,887 INFO L137 Inliner]: procedures = 17, calls = 11, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 4757 [2021-11-19 05:33:34,887 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-19 05:33:34,888 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-19 05:33:34,888 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-19 05:33:34,889 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-19 05:33:34,897 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:33:34" (1/1) ... [2021-11-19 05:33:34,897 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:33:34" (1/1) ... [2021-11-19 05:33:34,930 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:33:34" (1/1) ... [2021-11-19 05:33:34,930 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:33:34" (1/1) ... [2021-11-19 05:33:35,218 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:33:34" (1/1) ... [2021-11-19 05:33:35,252 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:33:34" (1/1) ... [2021-11-19 05:33:35,292 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:33:34" (1/1) ... [2021-11-19 05:33:35,403 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-19 05:33:35,404 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-19 05:33:35,404 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-19 05:33:35,404 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-19 05:33:35,408 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:33:34" (1/1) ... [2021-11-19 05:33:35,445 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 05:33:35,457 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87f4aa9b-ddb2-4078-8d14-8ebc9c1edbe0/bin/uautomizer-ZXIjhQolGL/z3 [2021-11-19 05:33:35,511 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87f4aa9b-ddb2-4078-8d14-8ebc9c1edbe0/bin/uautomizer-ZXIjhQolGL/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-19 05:33:35,558 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87f4aa9b-ddb2-4078-8d14-8ebc9c1edbe0/bin/uautomizer-ZXIjhQolGL/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-19 05:33:35,604 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-19 05:33:35,604 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-19 05:33:35,605 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-19 05:33:35,605 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-19 05:33:35,769 INFO L236 CfgBuilder]: Building ICFG [2021-11-19 05:33:35,771 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-19 05:33:40,382 INFO L277 CfgBuilder]: Performing block encoding [2021-11-19 05:33:40,399 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-19 05:33:40,399 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-19 05:33:40,402 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:33:40 BoogieIcfgContainer [2021-11-19 05:33:40,403 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-19 05:33:40,405 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-19 05:33:40,405 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-19 05:33:40,408 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-19 05:33:40,409 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 05:33:32" (1/3) ... [2021-11-19 05:33:40,409 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f461ebb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 05:33:40, skipping insertion in model container [2021-11-19 05:33:40,410 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:33:34" (2/3) ... [2021-11-19 05:33:40,410 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f461ebb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 05:33:40, skipping insertion in model container [2021-11-19 05:33:40,410 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:33:40" (3/3) ... [2021-11-19 05:33:40,411 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem12_label55.c [2021-11-19 05:33:40,417 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-19 05:33:40,417 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-19 05:33:40,476 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-19 05:33:40,484 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-19 05:33:40,484 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-19 05:33:40,521 INFO L276 IsEmpty]: Start isEmpty. Operand has 818 states, 816 states have (on average 1.9178921568627452) internal successors, (1565), 817 states have internal predecessors, (1565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 05:33:40,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-19 05:33:40,526 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:33:40,527 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:33:40,528 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 05:33:40,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:33:40,534 INFO L85 PathProgramCache]: Analyzing trace with hash 297966002, now seen corresponding path program 1 times [2021-11-19 05:33:40,543 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 05:33:40,544 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1480524429] [2021-11-19 05:33:40,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:33:40,545 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 05:33:40,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:33:40,709 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:33:40,710 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 05:33:40,710 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1480524429] [2021-11-19 05:33:40,711 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1480524429] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 05:33:40,711 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:33:40,711 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-19 05:33:40,713 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1132788769] [2021-11-19 05:33:40,714 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 05:33:40,718 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-19 05:33:40,719 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 05:33:40,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-19 05:33:40,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 05:33:40,751 INFO L87 Difference]: Start difference. First operand has 818 states, 816 states have (on average 1.9178921568627452) internal successors, (1565), 817 states have internal predecessors, (1565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 05:33:45,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:33:45,525 INFO L93 Difference]: Finished difference Result 2388 states and 4629 transitions. [2021-11-19 05:33:45,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 05:33:45,535 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-11-19 05:33:45,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:33:45,574 INFO L225 Difference]: With dead ends: 2388 [2021-11-19 05:33:45,575 INFO L226 Difference]: Without dead ends: 1506 [2021-11-19 05:33:45,586 INFO L932 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 [2021-11-19 05:33:45,593 INFO L933 BasicCegarLoop]: 92 mSDtfsCounter, 851 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 2337 mSolverCounterSat, 1058 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 851 SdHoareTripleChecker+Valid, 102 SdHoareTripleChecker+Invalid, 3395 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1058 IncrementalHoareTripleChecker+Valid, 2337 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2021-11-19 05:33:45,595 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [851 Valid, 102 Invalid, 3395 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1058 Valid, 2337 Invalid, 0 Unknown, 0 Unchecked, 4.5s Time] [2021-11-19 05:33:45,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1506 states. [2021-11-19 05:33:45,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1506 to 1506. [2021-11-19 05:33:45,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1506 states, 1505 states have (on average 1.869767441860465) internal successors, (2814), 1505 states have internal predecessors, (2814), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 05:33:45,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1506 states to 1506 states and 2814 transitions. [2021-11-19 05:33:45,738 INFO L78 Accepts]: Start accepts. Automaton has 1506 states and 2814 transitions. Word has length 8 [2021-11-19 05:33:45,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:33:45,740 INFO L470 AbstractCegarLoop]: Abstraction has 1506 states and 2814 transitions. [2021-11-19 05:33:45,740 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 05:33:45,740 INFO L276 IsEmpty]: Start isEmpty. Operand 1506 states and 2814 transitions. [2021-11-19 05:33:45,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2021-11-19 05:33:45,744 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:33:45,745 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:33:45,745 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-19 05:33:45,745 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 05:33:45,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:33:45,746 INFO L85 PathProgramCache]: Analyzing trace with hash 1906625532, now seen corresponding path program 1 times [2021-11-19 05:33:45,747 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 05:33:45,747 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1926296259] [2021-11-19 05:33:45,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:33:45,747 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 05:33:45,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:33:45,995 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:33:45,996 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 05:33:45,996 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1926296259] [2021-11-19 05:33:45,996 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1926296259] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 05:33:45,996 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:33:45,997 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-19 05:33:45,997 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1013308344] [2021-11-19 05:33:45,997 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 05:33:45,999 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-19 05:33:45,999 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 05:33:46,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-19 05:33:46,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 05:33:46,005 INFO L87 Difference]: Start difference. First operand 1506 states and 2814 transitions. Second operand has 3 states, 3 states have (on average 27.0) internal successors, (81), 2 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 05:33:50,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:33:50,022 INFO L93 Difference]: Finished difference Result 4514 states and 8438 transitions. [2021-11-19 05:33:50,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 05:33:50,023 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 2 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 81 [2021-11-19 05:33:50,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:33:50,045 INFO L225 Difference]: With dead ends: 4514 [2021-11-19 05:33:50,045 INFO L226 Difference]: Without dead ends: 3010 [2021-11-19 05:33:50,053 INFO L932 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 [2021-11-19 05:33:50,055 INFO L933 BasicCegarLoop]: 347 mSDtfsCounter, 918 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2309 mSolverCounterSat, 550 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 918 SdHoareTripleChecker+Valid, 354 SdHoareTripleChecker+Invalid, 2859 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 550 IncrementalHoareTripleChecker+Valid, 2309 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2021-11-19 05:33:50,057 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [918 Valid, 354 Invalid, 2859 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [550 Valid, 2309 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2021-11-19 05:33:50,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3010 states. [2021-11-19 05:33:50,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3010 to 3008. [2021-11-19 05:33:50,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3008 states, 3007 states have (on average 1.6531426671100764) internal successors, (4971), 3007 states have internal predecessors, (4971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 05:33:50,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3008 states to 3008 states and 4971 transitions. [2021-11-19 05:33:50,168 INFO L78 Accepts]: Start accepts. Automaton has 3008 states and 4971 transitions. Word has length 81 [2021-11-19 05:33:50,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:33:50,170 INFO L470 AbstractCegarLoop]: Abstraction has 3008 states and 4971 transitions. [2021-11-19 05:33:50,171 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 2 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 05:33:50,171 INFO L276 IsEmpty]: Start isEmpty. Operand 3008 states and 4971 transitions. [2021-11-19 05:33:50,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-11-19 05:33:50,179 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:33:50,180 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:33:50,183 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-19 05:33:50,183 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 05:33:50,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:33:50,184 INFO L85 PathProgramCache]: Analyzing trace with hash -129197833, now seen corresponding path program 1 times [2021-11-19 05:33:50,185 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 05:33:50,186 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2010642448] [2021-11-19 05:33:50,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:33:50,187 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 05:33:50,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:33:50,397 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:33:50,398 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 05:33:50,398 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2010642448] [2021-11-19 05:33:50,398 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2010642448] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 05:33:50,398 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:33:50,398 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-19 05:33:50,399 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [361977326] [2021-11-19 05:33:50,399 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 05:33:50,399 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 05:33:50,399 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 05:33:50,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 05:33:50,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-19 05:33:50,400 INFO L87 Difference]: Start difference. First operand 3008 states and 4971 transitions. Second operand has 4 states, 4 states have (on average 23.5) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 05:33:56,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:33:56,004 INFO L93 Difference]: Finished difference Result 8267 states and 13429 transitions. [2021-11-19 05:33:56,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 05:33:56,004 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.5) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-11-19 05:33:56,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:33:56,037 INFO L225 Difference]: With dead ends: 8267 [2021-11-19 05:33:56,038 INFO L226 Difference]: Without dead ends: 5261 [2021-11-19 05:33:56,043 INFO L932 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 [2021-11-19 05:33:56,044 INFO L933 BasicCegarLoop]: 337 mSDtfsCounter, 2154 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 4998 mSolverCounterSat, 851 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2154 SdHoareTripleChecker+Valid, 353 SdHoareTripleChecker+Invalid, 5849 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 851 IncrementalHoareTripleChecker+Valid, 4998 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.4s IncrementalHoareTripleChecker+Time [2021-11-19 05:33:56,045 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2154 Valid, 353 Invalid, 5849 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [851 Valid, 4998 Invalid, 0 Unknown, 0 Unchecked, 5.4s Time] [2021-11-19 05:33:56,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5261 states. [2021-11-19 05:33:56,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5261 to 5261. [2021-11-19 05:33:56,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5261 states, 5260 states have (on average 1.5102661596958176) internal successors, (7944), 5260 states have internal predecessors, (7944), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 05:33:56,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5261 states to 5261 states and 7944 transitions. [2021-11-19 05:33:56,293 INFO L78 Accepts]: Start accepts. Automaton has 5261 states and 7944 transitions. Word has length 94 [2021-11-19 05:33:56,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:33:56,296 INFO L470 AbstractCegarLoop]: Abstraction has 5261 states and 7944 transitions. [2021-11-19 05:33:56,297 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.5) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 05:33:56,297 INFO L276 IsEmpty]: Start isEmpty. Operand 5261 states and 7944 transitions. [2021-11-19 05:33:56,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2021-11-19 05:33:56,314 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:33:56,314 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:33:56,315 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-19 05:33:56,315 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 05:33:56,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:33:56,317 INFO L85 PathProgramCache]: Analyzing trace with hash 487011922, now seen corresponding path program 1 times [2021-11-19 05:33:56,317 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 05:33:56,318 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1849389177] [2021-11-19 05:33:56,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:33:56,318 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 05:33:56,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:33:56,507 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:33:56,507 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 05:33:56,507 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1849389177] [2021-11-19 05:33:56,508 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1849389177] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-19 05:33:56,508 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [948522715] [2021-11-19 05:33:56,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:33:56,509 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 05:33:56,509 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87f4aa9b-ddb2-4078-8d14-8ebc9c1edbe0/bin/uautomizer-ZXIjhQolGL/z3 [2021-11-19 05:33:56,517 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87f4aa9b-ddb2-4078-8d14-8ebc9c1edbe0/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 05:33:56,538 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87f4aa9b-ddb2-4078-8d14-8ebc9c1edbe0/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-19 05:33:56,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:33:56,649 INFO L263 TraceCheckSpWp]: Trace formula consists of 235 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 05:33:56,662 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 05:33:57,158 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-19 05:33:57,159 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-19 05:33:57,160 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [948522715] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 05:33:57,160 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 05:33:57,161 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 4 [2021-11-19 05:33:57,161 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1768161219] [2021-11-19 05:33:57,161 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 05:33:57,166 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-19 05:33:57,168 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 05:33:57,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-19 05:33:57,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-19 05:33:57,170 INFO L87 Difference]: Start difference. First operand 5261 states and 7944 transitions. Second operand has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 2 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 05:34:00,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:34:00,837 INFO L93 Difference]: Finished difference Result 14275 states and 22313 transitions. [2021-11-19 05:34:00,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 05:34:00,838 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 2 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 149 [2021-11-19 05:34:00,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:34:00,892 INFO L225 Difference]: With dead ends: 14275 [2021-11-19 05:34:00,893 INFO L226 Difference]: Without dead ends: 9767 [2021-11-19 05:34:00,899 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 148 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-19 05:34:00,900 INFO L933 BasicCegarLoop]: 659 mSDtfsCounter, 621 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2456 mSolverCounterSat, 585 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 621 SdHoareTripleChecker+Valid, 666 SdHoareTripleChecker+Invalid, 3041 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 585 IncrementalHoareTripleChecker+Valid, 2456 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2021-11-19 05:34:00,901 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [621 Valid, 666 Invalid, 3041 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [585 Valid, 2456 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2021-11-19 05:34:00,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9767 states. [2021-11-19 05:34:01,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9767 to 9767. [2021-11-19 05:34:01,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9767 states, 9766 states have (on average 1.3878763055498669) internal successors, (13554), 9766 states have internal predecessors, (13554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 05:34:01,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9767 states to 9767 states and 13554 transitions. [2021-11-19 05:34:01,155 INFO L78 Accepts]: Start accepts. Automaton has 9767 states and 13554 transitions. Word has length 149 [2021-11-19 05:34:01,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:34:01,157 INFO L470 AbstractCegarLoop]: Abstraction has 9767 states and 13554 transitions. [2021-11-19 05:34:01,158 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 2 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 05:34:01,158 INFO L276 IsEmpty]: Start isEmpty. Operand 9767 states and 13554 transitions. [2021-11-19 05:34:01,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2021-11-19 05:34:01,161 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:34:01,161 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:34:01,201 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87f4aa9b-ddb2-4078-8d14-8ebc9c1edbe0/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-19 05:34:01,383 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87f4aa9b-ddb2-4078-8d14-8ebc9c1edbe0/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 05:34:01,383 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 05:34:01,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:34:01,384 INFO L85 PathProgramCache]: Analyzing trace with hash -1750673786, now seen corresponding path program 1 times [2021-11-19 05:34:01,384 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 05:34:01,384 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1640415648] [2021-11-19 05:34:01,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:34:01,384 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 05:34:01,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:34:01,565 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 81 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:34:01,566 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 05:34:01,566 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1640415648] [2021-11-19 05:34:01,566 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1640415648] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 05:34:01,566 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:34:01,566 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-19 05:34:01,567 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1356838452] [2021-11-19 05:34:01,567 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 05:34:01,568 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 05:34:01,568 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 05:34:01,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 05:34:01,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 05:34:01,569 INFO L87 Difference]: Start difference. First operand 9767 states and 13554 transitions. Second operand has 4 states, 4 states have (on average 41.25) internal successors, (165), 3 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 05:34:05,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:34:05,517 INFO L93 Difference]: Finished difference Result 23324 states and 32177 transitions. [2021-11-19 05:34:05,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 05:34:05,518 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 41.25) internal successors, (165), 3 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 165 [2021-11-19 05:34:05,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:34:05,582 INFO L225 Difference]: With dead ends: 23324 [2021-11-19 05:34:05,582 INFO L226 Difference]: Without dead ends: 14273 [2021-11-19 05:34:05,595 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 05:34:05,596 INFO L933 BasicCegarLoop]: 694 mSDtfsCounter, 704 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 3107 mSolverCounterSat, 393 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 704 SdHoareTripleChecker+Valid, 708 SdHoareTripleChecker+Invalid, 3500 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 393 IncrementalHoareTripleChecker+Valid, 3107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2021-11-19 05:34:05,597 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [704 Valid, 708 Invalid, 3500 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [393 Valid, 3107 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2021-11-19 05:34:05,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14273 states. [2021-11-19 05:34:05,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14273 to 14273. [2021-11-19 05:34:05,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14273 states, 14272 states have (on average 1.2779568385650224) internal successors, (18239), 14272 states have internal predecessors, (18239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 05:34:05,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14273 states to 14273 states and 18239 transitions. [2021-11-19 05:34:05,997 INFO L78 Accepts]: Start accepts. Automaton has 14273 states and 18239 transitions. Word has length 165 [2021-11-19 05:34:05,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:34:05,998 INFO L470 AbstractCegarLoop]: Abstraction has 14273 states and 18239 transitions. [2021-11-19 05:34:05,999 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 41.25) internal successors, (165), 3 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 05:34:05,999 INFO L276 IsEmpty]: Start isEmpty. Operand 14273 states and 18239 transitions. [2021-11-19 05:34:06,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2021-11-19 05:34:06,003 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:34:06,003 INFO L514 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:34:06,004 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-19 05:34:06,004 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 05:34:06,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:34:06,005 INFO L85 PathProgramCache]: Analyzing trace with hash 894032909, now seen corresponding path program 1 times [2021-11-19 05:34:06,005 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 05:34:06,005 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1793499399] [2021-11-19 05:34:06,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:34:06,005 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 05:34:06,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:34:06,213 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2021-11-19 05:34:06,213 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 05:34:06,213 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1793499399] [2021-11-19 05:34:06,214 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1793499399] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 05:34:06,214 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:34:06,214 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-19 05:34:06,214 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1781514682] [2021-11-19 05:34:06,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 05:34:06,215 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-19 05:34:06,215 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 05:34:06,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-19 05:34:06,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 05:34:06,216 INFO L87 Difference]: Start difference. First operand 14273 states and 18239 transitions. Second operand has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 05:34:09,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:34:09,605 INFO L93 Difference]: Finished difference Result 36805 states and 48361 transitions. [2021-11-19 05:34:09,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 05:34:09,606 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 239 [2021-11-19 05:34:09,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:34:09,664 INFO L225 Difference]: With dead ends: 36805 [2021-11-19 05:34:09,664 INFO L226 Difference]: Without dead ends: 23285 [2021-11-19 05:34:09,683 INFO L932 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 [2021-11-19 05:34:09,684 INFO L933 BasicCegarLoop]: 388 mSDtfsCounter, 796 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2233 mSolverCounterSat, 705 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 796 SdHoareTripleChecker+Valid, 395 SdHoareTripleChecker+Invalid, 2938 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 705 IncrementalHoareTripleChecker+Valid, 2233 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2021-11-19 05:34:09,684 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [796 Valid, 395 Invalid, 2938 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [705 Valid, 2233 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2021-11-19 05:34:09,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23285 states. [2021-11-19 05:34:10,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23285 to 23285. [2021-11-19 05:34:10,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23285 states, 23284 states have (on average 1.2641728225390827) internal successors, (29435), 23284 states have internal predecessors, (29435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 05:34:10,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23285 states to 23285 states and 29435 transitions. [2021-11-19 05:34:10,178 INFO L78 Accepts]: Start accepts. Automaton has 23285 states and 29435 transitions. Word has length 239 [2021-11-19 05:34:10,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:34:10,179 INFO L470 AbstractCegarLoop]: Abstraction has 23285 states and 29435 transitions. [2021-11-19 05:34:10,179 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 05:34:10,180 INFO L276 IsEmpty]: Start isEmpty. Operand 23285 states and 29435 transitions. [2021-11-19 05:34:10,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 271 [2021-11-19 05:34:10,185 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:34:10,185 INFO L514 BasicCegarLoop]: trace histogram [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, 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] [2021-11-19 05:34:10,185 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-19 05:34:10,186 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 05:34:10,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:34:10,187 INFO L85 PathProgramCache]: Analyzing trace with hash -2133057864, now seen corresponding path program 1 times [2021-11-19 05:34:10,187 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 05:34:10,187 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1225761928] [2021-11-19 05:34:10,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:34:10,188 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 05:34:10,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:34:10,350 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 116 trivial. 0 not checked. [2021-11-19 05:34:10,351 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 05:34:10,351 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1225761928] [2021-11-19 05:34:10,351 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1225761928] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 05:34:10,351 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:34:10,351 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-19 05:34:10,352 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1153262729] [2021-11-19 05:34:10,352 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 05:34:10,353 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-19 05:34:10,353 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 05:34:10,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-19 05:34:10,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 05:34:10,354 INFO L87 Difference]: Start difference. First operand 23285 states and 29435 transitions. Second operand has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 05:34:14,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:34:14,294 INFO L93 Difference]: Finished difference Result 66094 states and 84228 transitions. [2021-11-19 05:34:14,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 05:34:14,294 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 270 [2021-11-19 05:34:14,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:34:14,442 INFO L225 Difference]: With dead ends: 66094 [2021-11-19 05:34:14,442 INFO L226 Difference]: Without dead ends: 43562 [2021-11-19 05:34:14,471 INFO L932 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 [2021-11-19 05:34:14,472 INFO L933 BasicCegarLoop]: 1403 mSDtfsCounter, 746 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 2354 mSolverCounterSat, 539 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 746 SdHoareTripleChecker+Valid, 1411 SdHoareTripleChecker+Invalid, 2893 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 539 IncrementalHoareTripleChecker+Valid, 2354 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2021-11-19 05:34:14,473 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [746 Valid, 1411 Invalid, 2893 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [539 Valid, 2354 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2021-11-19 05:34:14,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43562 states. [2021-11-19 05:34:15,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43562 to 39056. [2021-11-19 05:34:15,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39056 states, 39055 states have (on average 1.188503392651389) internal successors, (46417), 39055 states have internal predecessors, (46417), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 05:34:15,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39056 states to 39056 states and 46417 transitions. [2021-11-19 05:34:15,130 INFO L78 Accepts]: Start accepts. Automaton has 39056 states and 46417 transitions. Word has length 270 [2021-11-19 05:34:15,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:34:15,131 INFO L470 AbstractCegarLoop]: Abstraction has 39056 states and 46417 transitions. [2021-11-19 05:34:15,132 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 05:34:15,132 INFO L276 IsEmpty]: Start isEmpty. Operand 39056 states and 46417 transitions. [2021-11-19 05:34:15,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 312 [2021-11-19 05:34:15,139 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:34:15,140 INFO L514 BasicCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:34:15,140 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-19 05:34:15,140 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 05:34:15,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:34:15,141 INFO L85 PathProgramCache]: Analyzing trace with hash -722854976, now seen corresponding path program 1 times [2021-11-19 05:34:15,141 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 05:34:15,141 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [799338826] [2021-11-19 05:34:15,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:34:15,142 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 05:34:15,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:34:15,312 INFO L134 CoverageAnalysis]: Checked inductivity of 248 backedges. 178 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2021-11-19 05:34:15,313 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 05:34:15,313 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [799338826] [2021-11-19 05:34:15,313 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [799338826] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 05:34:15,313 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:34:15,313 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-19 05:34:15,314 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [649612508] [2021-11-19 05:34:15,314 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 05:34:15,314 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 05:34:15,315 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 05:34:15,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 05:34:15,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 05:34:15,316 INFO L87 Difference]: Start difference. First operand 39056 states and 46417 transitions. Second operand has 4 states, 4 states have (on average 60.5) internal successors, (242), 3 states have internal predecessors, (242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 05:34:19,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:34:19,011 INFO L93 Difference]: Finished difference Result 77398 states and 92114 transitions. [2021-11-19 05:34:19,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 05:34:19,012 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 60.5) internal successors, (242), 3 states have internal predecessors, (242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 311 [2021-11-19 05:34:19,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:34:19,071 INFO L225 Difference]: With dead ends: 77398 [2021-11-19 05:34:19,071 INFO L226 Difference]: Without dead ends: 39058 [2021-11-19 05:34:19,099 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 05:34:19,100 INFO L933 BasicCegarLoop]: 309 mSDtfsCounter, 851 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 3408 mSolverCounterSat, 259 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 851 SdHoareTripleChecker+Valid, 324 SdHoareTripleChecker+Invalid, 3667 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 259 IncrementalHoareTripleChecker+Valid, 3408 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2021-11-19 05:34:19,100 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [851 Valid, 324 Invalid, 3667 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [259 Valid, 3408 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2021-11-19 05:34:19,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39058 states. [2021-11-19 05:34:19,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39058 to 39056. [2021-11-19 05:34:19,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39056 states, 39055 states have (on average 1.1725003200614519) internal successors, (45792), 39055 states have internal predecessors, (45792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 05:34:19,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39056 states to 39056 states and 45792 transitions. [2021-11-19 05:34:19,902 INFO L78 Accepts]: Start accepts. Automaton has 39056 states and 45792 transitions. Word has length 311 [2021-11-19 05:34:19,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:34:19,902 INFO L470 AbstractCegarLoop]: Abstraction has 39056 states and 45792 transitions. [2021-11-19 05:34:19,903 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 60.5) internal successors, (242), 3 states have internal predecessors, (242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 05:34:19,903 INFO L276 IsEmpty]: Start isEmpty. Operand 39056 states and 45792 transitions. [2021-11-19 05:34:19,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 330 [2021-11-19 05:34:19,912 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:34:19,913 INFO L514 BasicCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:34:19,913 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-19 05:34:19,913 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 05:34:19,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:34:19,914 INFO L85 PathProgramCache]: Analyzing trace with hash -1133561799, now seen corresponding path program 1 times [2021-11-19 05:34:19,914 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 05:34:19,914 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [369614428] [2021-11-19 05:34:19,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:34:19,915 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 05:34:19,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:34:20,082 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 192 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2021-11-19 05:34:20,082 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 05:34:20,082 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [369614428] [2021-11-19 05:34:20,087 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [369614428] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 05:34:20,087 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:34:20,087 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-19 05:34:20,087 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2135454011] [2021-11-19 05:34:20,088 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 05:34:20,088 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-19 05:34:20,089 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 05:34:20,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-19 05:34:20,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 05:34:20,090 INFO L87 Difference]: Start difference. First operand 39056 states and 45792 transitions. Second operand has 3 states, 3 states have (on average 82.0) internal successors, (246), 3 states have internal predecessors, (246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 05:34:24,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:34:24,134 INFO L93 Difference]: Finished difference Result 97636 states and 116556 transitions. [2021-11-19 05:34:24,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 05:34:24,135 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 82.0) internal successors, (246), 3 states have internal predecessors, (246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 329 [2021-11-19 05:34:24,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:34:24,242 INFO L225 Difference]: With dead ends: 97636 [2021-11-19 05:34:24,242 INFO L226 Difference]: Without dead ends: 59333 [2021-11-19 05:34:24,262 INFO L932 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 [2021-11-19 05:34:24,265 INFO L933 BasicCegarLoop]: 1361 mSDtfsCounter, 668 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 2389 mSolverCounterSat, 518 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 668 SdHoareTripleChecker+Valid, 1369 SdHoareTripleChecker+Invalid, 2907 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 518 IncrementalHoareTripleChecker+Valid, 2389 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2021-11-19 05:34:24,266 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [668 Valid, 1369 Invalid, 2907 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [518 Valid, 2389 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2021-11-19 05:34:24,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59333 states. [2021-11-19 05:34:25,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59333 to 57080. [2021-11-19 05:34:25,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57080 states, 57079 states have (on average 1.1423290527164105) internal successors, (65203), 57079 states have internal predecessors, (65203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 05:34:25,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57080 states to 57080 states and 65203 transitions. [2021-11-19 05:34:25,446 INFO L78 Accepts]: Start accepts. Automaton has 57080 states and 65203 transitions. Word has length 329 [2021-11-19 05:34:25,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:34:25,447 INFO L470 AbstractCegarLoop]: Abstraction has 57080 states and 65203 transitions. [2021-11-19 05:34:25,447 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 82.0) internal successors, (246), 3 states have internal predecessors, (246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 05:34:25,447 INFO L276 IsEmpty]: Start isEmpty. Operand 57080 states and 65203 transitions. [2021-11-19 05:34:25,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 331 [2021-11-19 05:34:25,458 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:34:25,458 INFO L514 BasicCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:34:25,458 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-19 05:34:25,459 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 05:34:25,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:34:25,459 INFO L85 PathProgramCache]: Analyzing trace with hash -1753823198, now seen corresponding path program 1 times [2021-11-19 05:34:25,460 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 05:34:25,460 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2118870526] [2021-11-19 05:34:25,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:34:25,460 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 05:34:25,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:34:25,818 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2021-11-19 05:34:25,819 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 05:34:25,819 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2118870526] [2021-11-19 05:34:25,819 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2118870526] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 05:34:25,819 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:34:25,820 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-19 05:34:25,820 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1306867646] [2021-11-19 05:34:25,823 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 05:34:25,824 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-19 05:34:25,824 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 05:34:25,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-19 05:34:25,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 05:34:25,825 INFO L87 Difference]: Start difference. First operand 57080 states and 65203 transitions. Second operand has 3 states, 3 states have (on average 62.333333333333336) internal successors, (187), 2 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 05:34:29,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:34:29,488 INFO L93 Difference]: Finished difference Result 133684 states and 155378 transitions. [2021-11-19 05:34:29,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 05:34:29,488 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 62.333333333333336) internal successors, (187), 2 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 330 [2021-11-19 05:34:29,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:34:29,643 INFO L225 Difference]: With dead ends: 133684 [2021-11-19 05:34:29,643 INFO L226 Difference]: Without dead ends: 77357 [2021-11-19 05:34:29,824 INFO L932 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 [2021-11-19 05:34:29,825 INFO L933 BasicCegarLoop]: 416 mSDtfsCounter, 658 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 1967 mSolverCounterSat, 841 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 658 SdHoareTripleChecker+Valid, 422 SdHoareTripleChecker+Invalid, 2808 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 841 IncrementalHoareTripleChecker+Valid, 1967 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2021-11-19 05:34:29,827 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [658 Valid, 422 Invalid, 2808 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [841 Valid, 1967 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2021-11-19 05:34:29,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77357 states. [2021-11-19 05:34:30,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77357 to 69096. [2021-11-19 05:34:30,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69096 states, 69095 states have (on average 1.1377957884072654) internal successors, (78616), 69095 states have internal predecessors, (78616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 05:34:30,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69096 states to 69096 states and 78616 transitions. [2021-11-19 05:34:30,827 INFO L78 Accepts]: Start accepts. Automaton has 69096 states and 78616 transitions. Word has length 330 [2021-11-19 05:34:30,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:34:30,828 INFO L470 AbstractCegarLoop]: Abstraction has 69096 states and 78616 transitions. [2021-11-19 05:34:30,828 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 62.333333333333336) internal successors, (187), 2 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 05:34:30,828 INFO L276 IsEmpty]: Start isEmpty. Operand 69096 states and 78616 transitions. [2021-11-19 05:34:30,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 447 [2021-11-19 05:34:30,844 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:34:30,844 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 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, 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, 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] [2021-11-19 05:34:30,845 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-19 05:34:30,845 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 05:34:30,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:34:30,846 INFO L85 PathProgramCache]: Analyzing trace with hash 2086376952, now seen corresponding path program 1 times [2021-11-19 05:34:30,846 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 05:34:30,846 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1469704959] [2021-11-19 05:34:30,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:34:30,847 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 05:34:31,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:34:31,452 INFO L134 CoverageAnalysis]: Checked inductivity of 567 backedges. 64 proven. 333 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2021-11-19 05:34:31,453 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 05:34:31,453 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1469704959] [2021-11-19 05:34:31,453 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1469704959] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-19 05:34:31,453 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1934006196] [2021-11-19 05:34:31,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:34:31,454 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 05:34:31,454 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87f4aa9b-ddb2-4078-8d14-8ebc9c1edbe0/bin/uautomizer-ZXIjhQolGL/z3 [2021-11-19 05:34:31,455 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87f4aa9b-ddb2-4078-8d14-8ebc9c1edbe0/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 05:34:31,476 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87f4aa9b-ddb2-4078-8d14-8ebc9c1edbe0/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-19 05:34:31,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:34:31,631 INFO L263 TraceCheckSpWp]: Trace formula consists of 612 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 05:34:31,649 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 05:34:32,690 INFO L134 CoverageAnalysis]: Checked inductivity of 567 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2021-11-19 05:34:32,690 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-19 05:34:32,691 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1934006196] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 05:34:32,691 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 05:34:32,691 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2021-11-19 05:34:32,692 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1073128958] [2021-11-19 05:34:32,692 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 05:34:32,693 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-19 05:34:32,694 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 05:34:32,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-19 05:34:32,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-19 05:34:32,695 INFO L87 Difference]: Start difference. First operand 69096 states and 78616 transitions. Second operand has 3 states, 3 states have (on average 52.333333333333336) internal successors, (157), 3 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 05:34:36,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:34:36,337 INFO L93 Difference]: Finished difference Result 152459 states and 173580 transitions. [2021-11-19 05:34:36,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 05:34:36,338 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.333333333333336) internal successors, (157), 3 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 446 [2021-11-19 05:34:36,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:34:36,662 INFO L225 Difference]: With dead ends: 152459 [2021-11-19 05:34:36,662 INFO L226 Difference]: Without dead ends: 84116 [2021-11-19 05:34:36,711 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 449 GetRequests, 445 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-19 05:34:36,725 INFO L933 BasicCegarLoop]: 1109 mSDtfsCounter, 866 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 2176 mSolverCounterSat, 481 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 866 SdHoareTripleChecker+Valid, 1117 SdHoareTripleChecker+Invalid, 2657 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 481 IncrementalHoareTripleChecker+Valid, 2176 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2021-11-19 05:34:36,726 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [866 Valid, 1117 Invalid, 2657 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [481 Valid, 2176 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2021-11-19 05:34:36,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84116 states. [2021-11-19 05:34:37,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84116 to 84116. [2021-11-19 05:34:37,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84116 states, 84115 states have (on average 1.125280865481781) internal successors, (94653), 84115 states have internal predecessors, (94653), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 05:34:38,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84116 states to 84116 states and 94653 transitions. [2021-11-19 05:34:38,105 INFO L78 Accepts]: Start accepts. Automaton has 84116 states and 94653 transitions. Word has length 446 [2021-11-19 05:34:38,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:34:38,107 INFO L470 AbstractCegarLoop]: Abstraction has 84116 states and 94653 transitions. [2021-11-19 05:34:38,107 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.333333333333336) internal successors, (157), 3 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 05:34:38,107 INFO L276 IsEmpty]: Start isEmpty. Operand 84116 states and 94653 transitions. [2021-11-19 05:34:38,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 488 [2021-11-19 05:34:38,126 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:34:38,127 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 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, 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, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:34:38,167 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87f4aa9b-ddb2-4078-8d14-8ebc9c1edbe0/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2021-11-19 05:34:38,341 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87f4aa9b-ddb2-4078-8d14-8ebc9c1edbe0/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 05:34:38,341 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 05:34:38,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:34:38,342 INFO L85 PathProgramCache]: Analyzing trace with hash -771262672, now seen corresponding path program 1 times [2021-11-19 05:34:38,342 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 05:34:38,342 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1672370495] [2021-11-19 05:34:38,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:34:38,342 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 05:34:38,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:34:38,708 INFO L134 CoverageAnalysis]: Checked inductivity of 613 backedges. 354 proven. 0 refuted. 0 times theorem prover too weak. 259 trivial. 0 not checked. [2021-11-19 05:34:38,708 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 05:34:38,708 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1672370495] [2021-11-19 05:34:38,709 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1672370495] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 05:34:38,709 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:34:38,709 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-19 05:34:38,709 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1710314798] [2021-11-19 05:34:38,710 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 05:34:38,711 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-19 05:34:38,711 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 05:34:38,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-19 05:34:38,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 05:34:38,713 INFO L87 Difference]: Start difference. First operand 84116 states and 94653 transitions. Second operand has 3 states, 3 states have (on average 101.0) internal successors, (303), 3 states have internal predecessors, (303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 05:34:43,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:34:43,140 INFO L93 Difference]: Finished difference Result 202025 states and 229597 transitions. [2021-11-19 05:34:43,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 05:34:43,141 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 101.0) internal successors, (303), 3 states have internal predecessors, (303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 487 [2021-11-19 05:34:43,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:34:43,289 INFO L225 Difference]: With dead ends: 202025 [2021-11-19 05:34:43,289 INFO L226 Difference]: Without dead ends: 114907 [2021-11-19 05:34:43,328 INFO L932 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 [2021-11-19 05:34:43,329 INFO L933 BasicCegarLoop]: 1275 mSDtfsCounter, 655 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2208 mSolverCounterSat, 611 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 655 SdHoareTripleChecker+Valid, 1282 SdHoareTripleChecker+Invalid, 2819 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 611 IncrementalHoareTripleChecker+Valid, 2208 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2021-11-19 05:34:43,330 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [655 Valid, 1282 Invalid, 2819 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [611 Valid, 2208 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2021-11-19 05:34:43,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114907 states. [2021-11-19 05:34:44,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114907 to 99887. [2021-11-19 05:34:44,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99887 states, 99886 states have (on average 1.1144204393008028) internal successors, (111315), 99886 states have internal predecessors, (111315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 05:34:45,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99887 states to 99887 states and 111315 transitions. [2021-11-19 05:34:45,014 INFO L78 Accepts]: Start accepts. Automaton has 99887 states and 111315 transitions. Word has length 487 [2021-11-19 05:34:45,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:34:45,016 INFO L470 AbstractCegarLoop]: Abstraction has 99887 states and 111315 transitions. [2021-11-19 05:34:45,016 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 101.0) internal successors, (303), 3 states have internal predecessors, (303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 05:34:45,016 INFO L276 IsEmpty]: Start isEmpty. Operand 99887 states and 111315 transitions. [2021-11-19 05:34:45,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 579 [2021-11-19 05:34:45,044 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:34:45,045 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:34:45,045 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-19 05:34:45,045 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 05:34:45,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:34:45,046 INFO L85 PathProgramCache]: Analyzing trace with hash 1051675525, now seen corresponding path program 1 times [2021-11-19 05:34:45,046 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 05:34:45,047 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1199780934] [2021-11-19 05:34:45,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:34:45,047 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 05:34:45,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:34:45,438 INFO L134 CoverageAnalysis]: Checked inductivity of 728 backedges. 493 proven. 229 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-19 05:34:45,438 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 05:34:45,438 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1199780934] [2021-11-19 05:34:45,439 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1199780934] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-19 05:34:45,439 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [200545886] [2021-11-19 05:34:45,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:34:45,439 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 05:34:45,440 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87f4aa9b-ddb2-4078-8d14-8ebc9c1edbe0/bin/uautomizer-ZXIjhQolGL/z3 [2021-11-19 05:34:45,441 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87f4aa9b-ddb2-4078-8d14-8ebc9c1edbe0/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 05:34:45,466 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87f4aa9b-ddb2-4078-8d14-8ebc9c1edbe0/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-19 05:34:45,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:34:45,669 INFO L263 TraceCheckSpWp]: Trace formula consists of 740 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 05:34:45,682 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 05:34:46,651 INFO L134 CoverageAnalysis]: Checked inductivity of 728 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 705 trivial. 0 not checked. [2021-11-19 05:34:46,651 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-19 05:34:46,652 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [200545886] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 05:34:46,652 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 05:34:46,652 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2021-11-19 05:34:46,652 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1890481706] [2021-11-19 05:34:46,653 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 05:34:46,654 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-19 05:34:46,654 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 05:34:46,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-19 05:34:46,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-19 05:34:46,655 INFO L87 Difference]: Start difference. First operand 99887 states and 111315 transitions. Second operand has 3 states, 3 states have (on average 63.0) internal successors, (189), 3 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 05:34:50,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:34:50,746 INFO L93 Difference]: Finished difference Result 202776 states and 225721 transitions. [2021-11-19 05:34:50,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 05:34:50,747 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 63.0) internal successors, (189), 3 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 578 [2021-11-19 05:34:50,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:34:50,872 INFO L225 Difference]: With dead ends: 202776 [2021-11-19 05:34:50,872 INFO L226 Difference]: Without dead ends: 103642 [2021-11-19 05:34:50,899 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 582 GetRequests, 577 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-19 05:34:50,903 INFO L933 BasicCegarLoop]: 1173 mSDtfsCounter, 832 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 2077 mSolverCounterSat, 597 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 832 SdHoareTripleChecker+Valid, 1181 SdHoareTripleChecker+Invalid, 2674 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 597 IncrementalHoareTripleChecker+Valid, 2077 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2021-11-19 05:34:50,904 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [832 Valid, 1181 Invalid, 2674 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [597 Valid, 2077 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2021-11-19 05:34:50,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103642 states. [2021-11-19 05:34:52,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103642 to 97634. [2021-11-19 05:34:52,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97634 states, 97633 states have (on average 1.072147736933209) internal successors, (104677), 97633 states have internal predecessors, (104677), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 05:34:52,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97634 states to 97634 states and 104677 transitions. [2021-11-19 05:34:52,182 INFO L78 Accepts]: Start accepts. Automaton has 97634 states and 104677 transitions. Word has length 578 [2021-11-19 05:34:52,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:34:52,183 INFO L470 AbstractCegarLoop]: Abstraction has 97634 states and 104677 transitions. [2021-11-19 05:34:52,183 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 63.0) internal successors, (189), 3 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 05:34:52,183 INFO L276 IsEmpty]: Start isEmpty. Operand 97634 states and 104677 transitions. [2021-11-19 05:34:52,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 580 [2021-11-19 05:34:52,203 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:34:52,204 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 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, 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:34:52,232 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87f4aa9b-ddb2-4078-8d14-8ebc9c1edbe0/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2021-11-19 05:34:52,417 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87f4aa9b-ddb2-4078-8d14-8ebc9c1edbe0/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 05:34:52,417 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 05:34:52,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:34:52,418 INFO L85 PathProgramCache]: Analyzing trace with hash -341058602, now seen corresponding path program 1 times [2021-11-19 05:34:52,418 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 05:34:52,418 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [661981156] [2021-11-19 05:34:52,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:34:52,418 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 05:34:52,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:34:52,645 INFO L134 CoverageAnalysis]: Checked inductivity of 697 backedges. 579 proven. 0 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2021-11-19 05:34:52,646 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 05:34:52,646 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [661981156] [2021-11-19 05:34:52,646 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [661981156] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 05:34:52,646 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:34:52,647 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-19 05:34:52,647 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [658273600] [2021-11-19 05:34:52,647 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 05:34:52,648 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-19 05:34:52,648 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 05:34:52,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-19 05:34:52,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 05:34:52,649 INFO L87 Difference]: Start difference. First operand 97634 states and 104677 transitions. Second operand has 3 states, 3 states have (on average 154.33333333333334) internal successors, (463), 3 states have internal predecessors, (463), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 05:34:57,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:34:57,199 INFO L93 Difference]: Finished difference Result 228310 states and 245588 transitions. [2021-11-19 05:34:57,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 05:34:57,200 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 154.33333333333334) internal successors, (463), 3 states have internal predecessors, (463), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 579 [2021-11-19 05:34:57,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:34:57,744 INFO L225 Difference]: With dead ends: 228310 [2021-11-19 05:34:57,744 INFO L226 Difference]: Without dead ends: 131429 [2021-11-19 05:34:57,781 INFO L932 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 [2021-11-19 05:34:57,783 INFO L933 BasicCegarLoop]: 1238 mSDtfsCounter, 667 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 2291 mSolverCounterSat, 516 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 667 SdHoareTripleChecker+Valid, 1246 SdHoareTripleChecker+Invalid, 2807 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 516 IncrementalHoareTripleChecker+Valid, 2291 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2021-11-19 05:34:57,784 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [667 Valid, 1246 Invalid, 2807 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [516 Valid, 2291 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2021-11-19 05:34:57,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131429 states. [2021-11-19 05:34:59,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131429 to 119413. [2021-11-19 05:34:59,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119413 states, 119412 states have (on average 1.0641727799551133) internal successors, (127075), 119412 states have internal predecessors, (127075), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 05:34:59,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119413 states to 119413 states and 127075 transitions. [2021-11-19 05:34:59,369 INFO L78 Accepts]: Start accepts. Automaton has 119413 states and 127075 transitions. Word has length 579 [2021-11-19 05:34:59,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:34:59,369 INFO L470 AbstractCegarLoop]: Abstraction has 119413 states and 127075 transitions. [2021-11-19 05:34:59,369 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 154.33333333333334) internal successors, (463), 3 states have internal predecessors, (463), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 05:34:59,369 INFO L276 IsEmpty]: Start isEmpty. Operand 119413 states and 127075 transitions. [2021-11-19 05:34:59,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 602 [2021-11-19 05:34:59,382 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:34:59,383 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 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, 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, 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, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:34:59,383 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-19 05:34:59,383 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 05:34:59,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:34:59,384 INFO L85 PathProgramCache]: Analyzing trace with hash 907560909, now seen corresponding path program 1 times [2021-11-19 05:34:59,384 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 05:34:59,384 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [635481263] [2021-11-19 05:34:59,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:34:59,385 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 05:34:59,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:34:59,744 INFO L134 CoverageAnalysis]: Checked inductivity of 796 backedges. 568 proven. 110 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2021-11-19 05:34:59,744 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 05:34:59,744 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [635481263] [2021-11-19 05:34:59,744 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [635481263] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-19 05:34:59,745 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1265252292] [2021-11-19 05:34:59,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:34:59,745 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 05:34:59,745 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87f4aa9b-ddb2-4078-8d14-8ebc9c1edbe0/bin/uautomizer-ZXIjhQolGL/z3 [2021-11-19 05:34:59,746 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87f4aa9b-ddb2-4078-8d14-8ebc9c1edbe0/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 05:34:59,748 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87f4aa9b-ddb2-4078-8d14-8ebc9c1edbe0/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-19 05:35:00,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:35:00,495 INFO L263 TraceCheckSpWp]: Trace formula consists of 770 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 05:35:00,502 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 05:35:01,415 INFO L134 CoverageAnalysis]: Checked inductivity of 796 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 773 trivial. 0 not checked. [2021-11-19 05:35:01,415 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-19 05:35:01,415 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1265252292] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 05:35:01,416 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 05:35:01,416 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2021-11-19 05:35:01,416 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1991517663] [2021-11-19 05:35:01,416 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 05:35:01,417 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-19 05:35:01,418 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 05:35:01,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-19 05:35:01,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-19 05:35:01,418 INFO L87 Difference]: Start difference. First operand 119413 states and 127075 transitions. Second operand has 3 states, 3 states have (on average 66.66666666666667) internal successors, (200), 3 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 05:35:05,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:35:05,286 INFO L93 Difference]: Finished difference Result 238073 states and 253392 transitions. [2021-11-19 05:35:05,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 05:35:05,287 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 66.66666666666667) internal successors, (200), 3 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 601 [2021-11-19 05:35:05,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:35:05,436 INFO L225 Difference]: With dead ends: 238073 [2021-11-19 05:35:05,436 INFO L226 Difference]: Without dead ends: 119413 [2021-11-19 05:35:05,476 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 604 GetRequests, 600 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-19 05:35:05,477 INFO L933 BasicCegarLoop]: 1296 mSDtfsCounter, 783 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 2084 mSolverCounterSat, 625 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 783 SdHoareTripleChecker+Valid, 1304 SdHoareTripleChecker+Invalid, 2709 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 625 IncrementalHoareTripleChecker+Valid, 2084 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2021-11-19 05:35:05,477 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [783 Valid, 1304 Invalid, 2709 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [625 Valid, 2084 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2021-11-19 05:35:05,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119413 states. [2021-11-19 05:35:06,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119413 to 104393. [2021-11-19 05:35:06,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104393 states, 104392 states have (on average 1.038240478197563) internal successors, (108384), 104392 states have internal predecessors, (108384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 05:35:07,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104393 states to 104393 states and 108384 transitions. [2021-11-19 05:35:07,127 INFO L78 Accepts]: Start accepts. Automaton has 104393 states and 108384 transitions. Word has length 601 [2021-11-19 05:35:07,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:35:07,127 INFO L470 AbstractCegarLoop]: Abstraction has 104393 states and 108384 transitions. [2021-11-19 05:35:07,127 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 66.66666666666667) internal successors, (200), 3 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 05:35:07,127 INFO L276 IsEmpty]: Start isEmpty. Operand 104393 states and 108384 transitions. [2021-11-19 05:35:07,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 655 [2021-11-19 05:35:07,144 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:35:07,145 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 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, 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:35:07,168 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87f4aa9b-ddb2-4078-8d14-8ebc9c1edbe0/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2021-11-19 05:35:07,345 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87f4aa9b-ddb2-4078-8d14-8ebc9c1edbe0/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-11-19 05:35:07,346 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 05:35:07,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:35:07,347 INFO L85 PathProgramCache]: Analyzing trace with hash 766311129, now seen corresponding path program 1 times [2021-11-19 05:35:07,347 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 05:35:07,347 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [476628691] [2021-11-19 05:35:07,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:35:07,347 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 05:35:07,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:35:07,697 INFO L134 CoverageAnalysis]: Checked inductivity of 834 backedges. 451 proven. 0 refuted. 0 times theorem prover too weak. 383 trivial. 0 not checked. [2021-11-19 05:35:07,697 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 05:35:07,698 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [476628691] [2021-11-19 05:35:07,698 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [476628691] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 05:35:07,698 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:35:07,698 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-19 05:35:07,699 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1754311415] [2021-11-19 05:35:07,699 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 05:35:07,700 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-19 05:35:07,700 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 05:35:07,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-19 05:35:07,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 05:35:07,701 INFO L87 Difference]: Start difference. First operand 104393 states and 108384 transitions. Second operand has 3 states, 3 states have (on average 130.0) internal successors, (390), 3 states have internal predecessors, (390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 05:35:11,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:35:11,611 INFO L93 Difference]: Finished difference Result 223053 states and 231771 transitions. [2021-11-19 05:35:11,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 05:35:11,611 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 130.0) internal successors, (390), 3 states have internal predecessors, (390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 654 [2021-11-19 05:35:11,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:35:11,743 INFO L225 Difference]: With dead ends: 223053 [2021-11-19 05:35:11,743 INFO L226 Difference]: Without dead ends: 118662 [2021-11-19 05:35:11,792 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 05:35:11,793 INFO L933 BasicCegarLoop]: 905 mSDtfsCounter, 644 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 2123 mSolverCounterSat, 566 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 644 SdHoareTripleChecker+Valid, 913 SdHoareTripleChecker+Invalid, 2689 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 566 IncrementalHoareTripleChecker+Valid, 2123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2021-11-19 05:35:11,793 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [644 Valid, 913 Invalid, 2689 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [566 Valid, 2123 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2021-11-19 05:35:11,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118662 states. [2021-11-19 05:35:13,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118662 to 114156. [2021-11-19 05:35:13,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114156 states, 114155 states have (on average 1.037781963120319) internal successors, (118468), 114155 states have internal predecessors, (118468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 05:35:13,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114156 states to 114156 states and 118468 transitions. [2021-11-19 05:35:13,766 INFO L78 Accepts]: Start accepts. Automaton has 114156 states and 118468 transitions. Word has length 654 [2021-11-19 05:35:13,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:35:13,767 INFO L470 AbstractCegarLoop]: Abstraction has 114156 states and 118468 transitions. [2021-11-19 05:35:13,768 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 130.0) internal successors, (390), 3 states have internal predecessors, (390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 05:35:13,768 INFO L276 IsEmpty]: Start isEmpty. Operand 114156 states and 118468 transitions. [2021-11-19 05:35:13,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1174 [2021-11-19 05:35:13,863 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:35:13,864 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 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, 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, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:35:13,865 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-11-19 05:35:13,865 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 05:35:13,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:35:13,866 INFO L85 PathProgramCache]: Analyzing trace with hash -520858787, now seen corresponding path program 1 times [2021-11-19 05:35:13,866 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 05:35:13,867 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [669427601] [2021-11-19 05:35:13,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:35:13,867 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 05:35:14,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:35:14,813 INFO L134 CoverageAnalysis]: Checked inductivity of 950 backedges. 600 proven. 0 refuted. 0 times theorem prover too weak. 350 trivial. 0 not checked. [2021-11-19 05:35:14,814 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 05:35:14,814 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [669427601] [2021-11-19 05:35:14,814 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [669427601] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 05:35:14,814 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:35:14,815 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-19 05:35:14,815 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1934093198] [2021-11-19 05:35:14,815 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 05:35:14,817 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-19 05:35:14,818 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 05:35:14,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-19 05:35:14,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-19 05:35:14,819 INFO L87 Difference]: Start difference. First operand 114156 states and 118468 transitions. Second operand has 6 states, 6 states have (on average 150.5) internal successors, (903), 6 states have internal predecessors, (903), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 05:35:25,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:35:25,514 INFO L93 Difference]: Finished difference Result 310323 states and 321801 transitions. [2021-11-19 05:35:25,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-19 05:35:25,515 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 150.5) internal successors, (903), 6 states have internal predecessors, (903), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 1173 [2021-11-19 05:35:25,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:35:25,746 INFO L225 Difference]: With dead ends: 310323 [2021-11-19 05:35:25,746 INFO L226 Difference]: Without dead ends: 196169 [2021-11-19 05:35:25,803 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=81, Invalid=191, Unknown=0, NotChecked=0, Total=272 [2021-11-19 05:35:25,804 INFO L933 BasicCegarLoop]: 534 mSDtfsCounter, 2976 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 8094 mSolverCounterSat, 2859 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2976 SdHoareTripleChecker+Valid, 602 SdHoareTripleChecker+Invalid, 10953 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2859 IncrementalHoareTripleChecker+Valid, 8094 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.2s IncrementalHoareTripleChecker+Time [2021-11-19 05:35:25,804 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2976 Valid, 602 Invalid, 10953 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2859 Valid, 8094 Invalid, 0 Unknown, 0 Unchecked, 9.2s Time] [2021-11-19 05:35:25,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196169 states. [2021-11-19 05:35:28,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196169 to 114907. [2021-11-19 05:35:28,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114907 states, 114906 states have (on average 1.0367778880128105) internal successors, (119132), 114906 states have internal predecessors, (119132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 05:35:28,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114907 states to 114907 states and 119132 transitions. [2021-11-19 05:35:28,411 INFO L78 Accepts]: Start accepts. Automaton has 114907 states and 119132 transitions. Word has length 1173 [2021-11-19 05:35:28,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:35:28,412 INFO L470 AbstractCegarLoop]: Abstraction has 114907 states and 119132 transitions. [2021-11-19 05:35:28,412 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 150.5) internal successors, (903), 6 states have internal predecessors, (903), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 05:35:28,413 INFO L276 IsEmpty]: Start isEmpty. Operand 114907 states and 119132 transitions. [2021-11-19 05:35:28,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1263 [2021-11-19 05:35:28,533 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:35:28,534 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:35:28,535 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-11-19 05:35:28,535 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 05:35:28,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:35:28,536 INFO L85 PathProgramCache]: Analyzing trace with hash -147848648, now seen corresponding path program 1 times [2021-11-19 05:35:28,537 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 05:35:28,537 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1662273790] [2021-11-19 05:35:28,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:35:28,537 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 05:35:28,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:35:29,383 INFO L134 CoverageAnalysis]: Checked inductivity of 1492 backedges. 695 proven. 0 refuted. 0 times theorem prover too weak. 797 trivial. 0 not checked. [2021-11-19 05:35:29,383 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 05:35:29,383 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1662273790] [2021-11-19 05:35:29,384 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1662273790] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 05:35:29,384 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:35:29,384 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-19 05:35:29,384 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [760026004] [2021-11-19 05:35:29,385 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 05:35:29,386 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-19 05:35:29,387 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 05:35:29,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-19 05:35:29,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 05:35:29,388 INFO L87 Difference]: Start difference. First operand 114907 states and 119132 transitions. Second operand has 3 states, 3 states have (on average 281.6666666666667) internal successors, (845), 3 states have internal predecessors, (845), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 05:35:33,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:35:33,752 INFO L93 Difference]: Finished difference Result 252342 states and 261826 transitions. [2021-11-19 05:35:33,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 05:35:33,753 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 281.6666666666667) internal successors, (845), 3 states have internal predecessors, (845), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 1262 [2021-11-19 05:35:33,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:35:33,912 INFO L225 Difference]: With dead ends: 252342 [2021-11-19 05:35:33,912 INFO L226 Difference]: Without dead ends: 138188 [2021-11-19 05:35:33,963 INFO L932 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 [2021-11-19 05:35:33,964 INFO L933 BasicCegarLoop]: 273 mSDtfsCounter, 256 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 2239 mSolverCounterSat, 712 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 256 SdHoareTripleChecker+Valid, 279 SdHoareTripleChecker+Invalid, 2951 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 712 IncrementalHoareTripleChecker+Valid, 2239 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2021-11-19 05:35:33,964 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [256 Valid, 279 Invalid, 2951 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [712 Valid, 2239 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2021-11-19 05:35:34,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138188 states. [2021-11-19 05:35:36,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138188 to 129927. [2021-11-19 05:35:36,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129927 states, 129926 states have (on average 1.035720333112695) internal successors, (134567), 129926 states have internal predecessors, (134567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 05:35:36,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129927 states to 129927 states and 134567 transitions. [2021-11-19 05:35:36,306 INFO L78 Accepts]: Start accepts. Automaton has 129927 states and 134567 transitions. Word has length 1262 [2021-11-19 05:35:36,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:35:36,307 INFO L470 AbstractCegarLoop]: Abstraction has 129927 states and 134567 transitions. [2021-11-19 05:35:36,308 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 281.6666666666667) internal successors, (845), 3 states have internal predecessors, (845), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 05:35:36,308 INFO L276 IsEmpty]: Start isEmpty. Operand 129927 states and 134567 transitions. [2021-11-19 05:35:36,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1268 [2021-11-19 05:35:36,373 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:35:36,374 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 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, 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, 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, 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, 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, 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, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:35:36,374 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-11-19 05:35:36,375 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 05:35:36,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:35:36,376 INFO L85 PathProgramCache]: Analyzing trace with hash -2134661746, now seen corresponding path program 1 times [2021-11-19 05:35:36,376 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 05:35:36,376 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [89730000] [2021-11-19 05:35:36,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:35:36,377 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 05:35:37,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-19 05:35:37,033 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-19 05:35:37,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat