./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem19_label13.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 63182f13 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7e140ca-7ac9-4ced-a6c0-01031246e932/bin/uautomizer-YU5uOKAj3y/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7e140ca-7ac9-4ced-a6c0-01031246e932/bin/uautomizer-YU5uOKAj3y/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7e140ca-7ac9-4ced-a6c0-01031246e932/bin/uautomizer-YU5uOKAj3y/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7e140ca-7ac9-4ced-a6c0-01031246e932/bin/uautomizer-YU5uOKAj3y/config/AutomizerReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem19_label13.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7e140ca-7ac9-4ced-a6c0-01031246e932/bin/uautomizer-YU5uOKAj3y/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7e140ca-7ac9-4ced-a6c0-01031246e932/bin/uautomizer-YU5uOKAj3y --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 040acbb5862662fb67bae31d21516f4df49e5ef7778edbe49322faa41e26948d --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-13 18:54:32,436 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-13 18:54:32,439 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-13 18:54:32,481 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-13 18:54:32,481 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-13 18:54:32,484 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-13 18:54:32,486 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-13 18:54:32,489 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-13 18:54:32,492 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-13 18:54:32,494 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-13 18:54:32,496 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-13 18:54:32,498 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-13 18:54:32,499 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-13 18:54:32,501 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-13 18:54:32,503 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-13 18:54:32,506 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-13 18:54:32,508 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-13 18:54:32,510 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-13 18:54:32,513 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-13 18:54:32,517 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-13 18:54:32,520 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-13 18:54:32,522 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-13 18:54:32,524 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-13 18:54:32,526 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-13 18:54:32,531 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-13 18:54:32,532 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-13 18:54:32,532 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-13 18:54:32,534 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-13 18:54:32,535 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-13 18:54:32,537 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-13 18:54:32,538 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-13 18:54:32,539 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-13 18:54:32,541 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-13 18:54:32,542 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-13 18:54:32,544 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-13 18:54:32,545 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-13 18:54:32,546 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-13 18:54:32,547 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-13 18:54:32,547 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-13 18:54:32,549 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-13 18:54:32,550 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-13 18:54:32,551 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7e140ca-7ac9-4ced-a6c0-01031246e932/bin/uautomizer-YU5uOKAj3y/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-13 18:54:32,586 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-13 18:54:32,586 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-13 18:54:32,587 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-13 18:54:32,587 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-13 18:54:32,588 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-13 18:54:32,588 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-13 18:54:32,590 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-13 18:54:32,590 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-13 18:54:32,590 INFO L138 SettingsManager]: * Use SBE=true [2021-11-13 18:54:32,591 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-13 18:54:32,591 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-13 18:54:32,591 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-13 18:54:32,592 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-13 18:54:32,592 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-13 18:54:32,592 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-13 18:54:32,593 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-13 18:54:32,593 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-13 18:54:32,593 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-13 18:54:32,594 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-13 18:54:32,594 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-13 18:54:32,594 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-13 18:54:32,595 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-13 18:54:32,595 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-13 18:54:32,595 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-13 18:54:32,596 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 18:54:32,596 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-13 18:54:32,596 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-13 18:54:32,597 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-13 18:54:32,597 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-13 18:54:32,597 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-13 18:54:32,598 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-13 18:54:32,598 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-13 18:54:32,598 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-13 18:54:32,599 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-13 18:54:32,599 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_d7e140ca-7ac9-4ced-a6c0-01031246e932/bin/uautomizer-YU5uOKAj3y/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7e140ca-7ac9-4ced-a6c0-01031246e932/bin/uautomizer-YU5uOKAj3y Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 040acbb5862662fb67bae31d21516f4df49e5ef7778edbe49322faa41e26948d [2021-11-13 18:54:32,973 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-13 18:54:33,017 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-13 18:54:33,020 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-13 18:54:33,022 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-13 18:54:33,023 INFO L275 PluginConnector]: CDTParser initialized [2021-11-13 18:54:33,026 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7e140ca-7ac9-4ced-a6c0-01031246e932/bin/uautomizer-YU5uOKAj3y/../../sv-benchmarks/c/eca-rers2012/Problem19_label13.c [2021-11-13 18:54:33,127 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7e140ca-7ac9-4ced-a6c0-01031246e932/bin/uautomizer-YU5uOKAj3y/data/9af613cca/b40da486e2564521a5644f976369a8fd/FLAGcc01068f3 [2021-11-13 18:54:34,257 INFO L306 CDTParser]: Found 1 translation units. [2021-11-13 18:54:34,259 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7e140ca-7ac9-4ced-a6c0-01031246e932/sv-benchmarks/c/eca-rers2012/Problem19_label13.c [2021-11-13 18:54:34,320 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7e140ca-7ac9-4ced-a6c0-01031246e932/bin/uautomizer-YU5uOKAj3y/data/9af613cca/b40da486e2564521a5644f976369a8fd/FLAGcc01068f3 [2021-11-13 18:54:34,559 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7e140ca-7ac9-4ced-a6c0-01031246e932/bin/uautomizer-YU5uOKAj3y/data/9af613cca/b40da486e2564521a5644f976369a8fd [2021-11-13 18:54:34,563 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-13 18:54:34,566 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-13 18:54:34,571 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-13 18:54:34,571 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-13 18:54:34,576 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-13 18:54:34,578 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 06:54:34" (1/1) ... [2021-11-13 18:54:34,579 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2d0c76f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:54:34, skipping insertion in model container [2021-11-13 18:54:34,580 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 06:54:34" (1/1) ... [2021-11-13 18:54:34,589 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-13 18:54:34,972 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-13 18:54:35,470 WARN L228 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_d7e140ca-7ac9-4ced-a6c0-01031246e932/sv-benchmarks/c/eca-rers2012/Problem19_label13.c[4813,4826] [2021-11-13 18:54:37,607 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 18:54:37,628 INFO L203 MainTranslator]: Completed pre-run [2021-11-13 18:54:37,667 WARN L228 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_d7e140ca-7ac9-4ced-a6c0-01031246e932/sv-benchmarks/c/eca-rers2012/Problem19_label13.c[4813,4826] [2021-11-13 18:54:39,382 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 18:54:39,458 INFO L208 MainTranslator]: Completed translation [2021-11-13 18:54:39,459 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:54:39 WrapperNode [2021-11-13 18:54:39,459 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-13 18:54:39,461 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-13 18:54:39,461 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-13 18:54:39,461 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-13 18:54:39,471 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:54:39" (1/1) ... [2021-11-13 18:54:39,617 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:54:39" (1/1) ... [2021-11-13 18:54:40,821 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-13 18:54:40,822 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-13 18:54:40,823 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-13 18:54:40,823 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-13 18:54:40,835 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:54:39" (1/1) ... [2021-11-13 18:54:40,850 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:54:39" (1/1) ... [2021-11-13 18:54:41,379 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:54:39" (1/1) ... [2021-11-13 18:54:41,395 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:54:39" (1/1) ... [2021-11-13 18:54:42,014 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:54:39" (1/1) ... [2021-11-13 18:54:42,079 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:54:39" (1/1) ... [2021-11-13 18:54:42,249 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:54:39" (1/1) ... [2021-11-13 18:54:42,516 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-13 18:54:42,519 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-13 18:54:42,520 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-13 18:54:42,521 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-13 18:54:42,522 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:54:39" (1/1) ... [2021-11-13 18:54:42,530 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 18:54:42,546 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7e140ca-7ac9-4ced-a6c0-01031246e932/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 18:54:42,562 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7e140ca-7ac9-4ced-a6c0-01031246e932/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-13 18:54:42,582 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7e140ca-7ac9-4ced-a6c0-01031246e932/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-13 18:54:42,627 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-13 18:54:42,628 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-13 18:54:42,628 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-13 18:54:42,628 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-13 18:54:53,989 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-13 18:54:53,990 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-13 18:54:53,997 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 06:54:53 BoogieIcfgContainer [2021-11-13 18:54:53,998 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-13 18:54:54,000 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-13 18:54:54,000 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-13 18:54:54,004 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-13 18:54:54,005 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 06:54:34" (1/3) ... [2021-11-13 18:54:54,006 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7603b233 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 06:54:54, skipping insertion in model container [2021-11-13 18:54:54,006 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:54:39" (2/3) ... [2021-11-13 18:54:54,007 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7603b233 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 06:54:54, skipping insertion in model container [2021-11-13 18:54:54,007 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 06:54:53" (3/3) ... [2021-11-13 18:54:54,009 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem19_label13.c [2021-11-13 18:54:54,016 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-13 18:54:54,016 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-13 18:54:54,093 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-13 18:54:54,102 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 [2021-11-13 18:54:54,102 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-13 18:54:54,168 INFO L276 IsEmpty]: Start isEmpty. Operand has 1748 states, 1746 states have (on average 1.8699885452462772) internal successors, (3265), 1747 states have internal predecessors, (3265), 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) [2021-11-13 18:54:54,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-11-13 18:54:54,178 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:54:54,179 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:54:54,179 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:54:54,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:54:54,187 INFO L85 PathProgramCache]: Analyzing trace with hash -596708735, now seen corresponding path program 1 times [2021-11-13 18:54:54,199 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:54:54,204 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1127208349] [2021-11-13 18:54:54,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:54:54,205 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:54:54,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:54:54,602 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:54:54,603 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:54:54,604 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1127208349] [2021-11-13 18:54:54,605 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1127208349] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:54:54,605 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:54:54,606 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-13 18:54:54,608 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [638997701] [2021-11-13 18:54:54,609 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:54:54,615 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 18:54:54,615 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:54:54,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 18:54:54,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 18:54:54,675 INFO L87 Difference]: Start difference. First operand has 1748 states, 1746 states have (on average 1.8699885452462772) internal successors, (3265), 1747 states have internal predecessors, (3265), 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 11.666666666666666) internal successors, (35), 2 states have internal predecessors, (35), 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) [2021-11-13 18:55:06,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:55:06,562 INFO L93 Difference]: Finished difference Result 4992 states and 9449 transitions. [2021-11-13 18:55:06,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 18:55:06,565 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 2 states have internal predecessors, (35), 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 35 [2021-11-13 18:55:06,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:55:06,615 INFO L225 Difference]: With dead ends: 4992 [2021-11-13 18:55:06,616 INFO L226 Difference]: Without dead ends: 3180 [2021-11-13 18:55:06,627 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 [2021-11-13 18:55:06,632 INFO L933 BasicCegarLoop]: 1015 mSDtfsCounter, 1641 mSDsluCounter, 138 mSDsCounter, 0 mSdLazyCounter, 4200 mSolverCounterSat, 2080 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9643.25ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1641 SdHoareTripleChecker+Valid, 1153 SdHoareTripleChecker+Invalid, 6280 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 80.57ms SdHoareTripleChecker+Time, 2080 IncrementalHoareTripleChecker+Valid, 4200 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11428.70ms IncrementalHoareTripleChecker+Time [2021-11-13 18:55:06,634 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1641 Valid, 1153 Invalid, 6280 Unknown, 0 Unchecked, 80.57ms Time], IncrementalHoareTripleChecker [2080 Valid, 4200 Invalid, 0 Unknown, 0 Unchecked, 11428.70ms Time] [2021-11-13 18:55:06,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3180 states. [2021-11-13 18:55:06,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3180 to 3122. [2021-11-13 18:55:06,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3122 states, 3121 states have (on average 1.7282922140339634) internal successors, (5394), 3121 states have internal predecessors, (5394), 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) [2021-11-13 18:55:06,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3122 states to 3122 states and 5394 transitions. [2021-11-13 18:55:06,895 INFO L78 Accepts]: Start accepts. Automaton has 3122 states and 5394 transitions. Word has length 35 [2021-11-13 18:55:06,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:55:06,897 INFO L470 AbstractCegarLoop]: Abstraction has 3122 states and 5394 transitions. [2021-11-13 18:55:06,898 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 2 states have internal predecessors, (35), 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) [2021-11-13 18:55:06,898 INFO L276 IsEmpty]: Start isEmpty. Operand 3122 states and 5394 transitions. [2021-11-13 18:55:06,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-11-13 18:55:06,908 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:55:06,909 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:55:06,910 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-13 18:55:06,911 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:55:06,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:55:06,916 INFO L85 PathProgramCache]: Analyzing trace with hash 690002788, now seen corresponding path program 1 times [2021-11-13 18:55:06,917 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:55:06,918 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [881675422] [2021-11-13 18:55:06,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:55:06,919 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:55:07,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:55:07,187 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:55:07,188 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:55:07,188 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [881675422] [2021-11-13 18:55:07,189 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [881675422] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:55:07,189 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:55:07,189 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-13 18:55:07,190 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [419966098] [2021-11-13 18:55:07,190 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:55:07,192 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 18:55:07,192 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:55:07,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 18:55:07,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 18:55:07,194 INFO L87 Difference]: Start difference. First operand 3122 states and 5394 transitions. Second operand has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 2 states have internal predecessors, (103), 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) [2021-11-13 18:55:17,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:55:17,504 INFO L93 Difference]: Finished difference Result 9135 states and 15860 transitions. [2021-11-13 18:55:17,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 18:55:17,505 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 2 states have internal predecessors, (103), 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 103 [2021-11-13 18:55:17,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:55:17,552 INFO L225 Difference]: With dead ends: 9135 [2021-11-13 18:55:17,552 INFO L226 Difference]: Without dead ends: 6015 [2021-11-13 18:55:17,559 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 [2021-11-13 18:55:17,561 INFO L933 BasicCegarLoop]: 721 mSDtfsCounter, 2533 mSDsluCounter, 271 mSDsCounter, 0 mSdLazyCounter, 5118 mSolverCounterSat, 434 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8513.04ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2533 SdHoareTripleChecker+Valid, 992 SdHoareTripleChecker+Invalid, 5552 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 41.51ms SdHoareTripleChecker+Time, 434 IncrementalHoareTripleChecker+Valid, 5118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10029.04ms IncrementalHoareTripleChecker+Time [2021-11-13 18:55:17,562 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2533 Valid, 992 Invalid, 5552 Unknown, 0 Unchecked, 41.51ms Time], IncrementalHoareTripleChecker [434 Valid, 5118 Invalid, 0 Unknown, 0 Unchecked, 10029.04ms Time] [2021-11-13 18:55:17,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6015 states. [2021-11-13 18:55:17,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6015 to 6013. [2021-11-13 18:55:17,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6013 states, 6012 states have (on average 1.6708250166333998) internal successors, (10045), 6012 states have internal predecessors, (10045), 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) [2021-11-13 18:55:17,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6013 states to 6013 states and 10045 transitions. [2021-11-13 18:55:17,772 INFO L78 Accepts]: Start accepts. Automaton has 6013 states and 10045 transitions. Word has length 103 [2021-11-13 18:55:17,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:55:17,774 INFO L470 AbstractCegarLoop]: Abstraction has 6013 states and 10045 transitions. [2021-11-13 18:55:17,775 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 2 states have internal predecessors, (103), 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) [2021-11-13 18:55:17,775 INFO L276 IsEmpty]: Start isEmpty. Operand 6013 states and 10045 transitions. [2021-11-13 18:55:17,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2021-11-13 18:55:17,783 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:55:17,784 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:55:17,784 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-13 18:55:17,784 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:55:17,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:55:17,787 INFO L85 PathProgramCache]: Analyzing trace with hash -28411721, now seen corresponding path program 1 times [2021-11-13 18:55:17,791 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:55:17,792 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [161635209] [2021-11-13 18:55:17,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:55:17,792 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:55:17,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:55:17,983 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:55:17,984 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:55:17,984 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [161635209] [2021-11-13 18:55:17,984 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [161635209] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:55:17,985 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:55:17,985 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-13 18:55:17,985 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [554703849] [2021-11-13 18:55:17,985 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:55:17,986 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 18:55:17,987 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:55:17,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 18:55:17,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 18:55:17,988 INFO L87 Difference]: Start difference. First operand 6013 states and 10045 transitions. Second operand has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 2 states have internal predecessors, (106), 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) [2021-11-13 18:55:27,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:55:27,172 INFO L93 Difference]: Finished difference Result 17598 states and 29555 transitions. [2021-11-13 18:55:27,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 18:55:27,173 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 2 states have internal predecessors, (106), 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 106 [2021-11-13 18:55:27,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:55:27,253 INFO L225 Difference]: With dead ends: 17598 [2021-11-13 18:55:27,253 INFO L226 Difference]: Without dead ends: 11587 [2021-11-13 18:55:27,267 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 [2021-11-13 18:55:27,269 INFO L933 BasicCegarLoop]: 1499 mSDtfsCounter, 1534 mSDsluCounter, 219 mSDsCounter, 0 mSdLazyCounter, 4335 mSolverCounterSat, 1470 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7503.32ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1534 SdHoareTripleChecker+Valid, 1718 SdHoareTripleChecker+Invalid, 5805 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 25.58ms SdHoareTripleChecker+Time, 1470 IncrementalHoareTripleChecker+Valid, 4335 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8909.90ms IncrementalHoareTripleChecker+Time [2021-11-13 18:55:27,274 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1534 Valid, 1718 Invalid, 5805 Unknown, 0 Unchecked, 25.58ms Time], IncrementalHoareTripleChecker [1470 Valid, 4335 Invalid, 0 Unknown, 0 Unchecked, 8909.90ms Time] [2021-11-13 18:55:27,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11587 states. [2021-11-13 18:55:27,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11587 to 11552. [2021-11-13 18:55:27,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11552 states, 11551 states have (on average 1.4577092892390269) internal successors, (16838), 11551 states have internal predecessors, (16838), 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) [2021-11-13 18:55:27,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11552 states to 11552 states and 16838 transitions. [2021-11-13 18:55:27,665 INFO L78 Accepts]: Start accepts. Automaton has 11552 states and 16838 transitions. Word has length 106 [2021-11-13 18:55:27,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:55:27,666 INFO L470 AbstractCegarLoop]: Abstraction has 11552 states and 16838 transitions. [2021-11-13 18:55:27,667 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 2 states have internal predecessors, (106), 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) [2021-11-13 18:55:27,667 INFO L276 IsEmpty]: Start isEmpty. Operand 11552 states and 16838 transitions. [2021-11-13 18:55:27,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2021-11-13 18:55:27,670 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:55:27,671 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:55:27,672 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-13 18:55:27,673 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:55:27,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:55:27,674 INFO L85 PathProgramCache]: Analyzing trace with hash -347844154, now seen corresponding path program 1 times [2021-11-13 18:55:27,674 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:55:27,675 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [368274440] [2021-11-13 18:55:27,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:55:27,676 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:55:27,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:55:27,833 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:55:27,834 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:55:27,834 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [368274440] [2021-11-13 18:55:27,834 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [368274440] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:55:27,834 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:55:27,835 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-13 18:55:27,835 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1521168522] [2021-11-13 18:55:27,835 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:55:27,836 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 18:55:27,836 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:55:27,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 18:55:27,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 18:55:27,838 INFO L87 Difference]: Start difference. First operand 11552 states and 16838 transitions. Second operand has 3 states, 3 states have (on average 44.0) internal successors, (132), 2 states have internal predecessors, (132), 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) [2021-11-13 18:55:37,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:55:37,181 INFO L93 Difference]: Finished difference Result 34262 states and 50007 transitions. [2021-11-13 18:55:37,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 18:55:37,182 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.0) internal successors, (132), 2 states have internal predecessors, (132), 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 132 [2021-11-13 18:55:37,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:55:37,266 INFO L225 Difference]: With dead ends: 34262 [2021-11-13 18:55:37,266 INFO L226 Difference]: Without dead ends: 22712 [2021-11-13 18:55:37,291 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 [2021-11-13 18:55:37,293 INFO L933 BasicCegarLoop]: 1850 mSDtfsCounter, 1750 mSDsluCounter, 273 mSDsCounter, 0 mSdLazyCounter, 4315 mSolverCounterSat, 1430 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7565.88ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1750 SdHoareTripleChecker+Valid, 2123 SdHoareTripleChecker+Invalid, 5745 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 29.27ms SdHoareTripleChecker+Time, 1430 IncrementalHoareTripleChecker+Valid, 4315 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9019.77ms IncrementalHoareTripleChecker+Time [2021-11-13 18:55:37,294 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1750 Valid, 2123 Invalid, 5745 Unknown, 0 Unchecked, 29.27ms Time], IncrementalHoareTripleChecker [1430 Valid, 4315 Invalid, 0 Unknown, 0 Unchecked, 9019.77ms Time] [2021-11-13 18:55:37,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22712 states. [2021-11-13 18:55:37,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22712 to 22687. [2021-11-13 18:55:37,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22687 states, 22686 states have (on average 1.2819359957683152) internal successors, (29082), 22686 states have internal predecessors, (29082), 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) [2021-11-13 18:55:37,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22687 states to 22687 states and 29082 transitions. [2021-11-13 18:55:37,875 INFO L78 Accepts]: Start accepts. Automaton has 22687 states and 29082 transitions. Word has length 132 [2021-11-13 18:55:37,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:55:37,877 INFO L470 AbstractCegarLoop]: Abstraction has 22687 states and 29082 transitions. [2021-11-13 18:55:37,879 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.0) internal successors, (132), 2 states have internal predecessors, (132), 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) [2021-11-13 18:55:37,879 INFO L276 IsEmpty]: Start isEmpty. Operand 22687 states and 29082 transitions. [2021-11-13 18:55:37,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 415 [2021-11-13 18:55:37,892 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:55:37,893 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-11-13 18:55:37,893 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-13 18:55:37,893 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:55:37,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:55:37,894 INFO L85 PathProgramCache]: Analyzing trace with hash -549262227, now seen corresponding path program 1 times [2021-11-13 18:55:37,895 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:55:37,895 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1647387248] [2021-11-13 18:55:37,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:55:37,896 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:55:38,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:55:38,392 INFO L134 CoverageAnalysis]: Checked inductivity of 224 backedges. 191 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2021-11-13 18:55:38,392 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:55:38,393 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1647387248] [2021-11-13 18:55:38,393 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1647387248] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:55:38,393 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:55:38,394 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-13 18:55:38,394 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [536541422] [2021-11-13 18:55:38,396 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:55:38,399 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 18:55:38,401 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:55:38,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 18:55:38,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-13 18:55:38,402 INFO L87 Difference]: Start difference. First operand 22687 states and 29082 transitions. Second operand has 4 states, 4 states have (on average 95.5) internal successors, (382), 3 states have internal predecessors, (382), 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) [2021-11-13 18:55:53,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:55:53,015 INFO L93 Difference]: Finished difference Result 57744 states and 72061 transitions. [2021-11-13 18:55:53,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 18:55:53,020 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 95.5) internal successors, (382), 3 states have internal predecessors, (382), 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 414 [2021-11-13 18:55:53,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:55:53,109 INFO L225 Difference]: With dead ends: 57744 [2021-11-13 18:55:53,110 INFO L226 Difference]: Without dead ends: 35059 [2021-11-13 18:55:53,142 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 [2021-11-13 18:55:53,147 INFO L933 BasicCegarLoop]: 1791 mSDtfsCounter, 3752 mSDsluCounter, 357 mSDsCounter, 0 mSdLazyCounter, 9616 mSolverCounterSat, 173 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11891.21ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3752 SdHoareTripleChecker+Valid, 2148 SdHoareTripleChecker+Invalid, 9789 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 171.84ms SdHoareTripleChecker+Time, 173 IncrementalHoareTripleChecker+Valid, 9616 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14004.59ms IncrementalHoareTripleChecker+Time [2021-11-13 18:55:53,148 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3752 Valid, 2148 Invalid, 9789 Unknown, 0 Unchecked, 171.84ms Time], IncrementalHoareTripleChecker [173 Valid, 9616 Invalid, 0 Unknown, 0 Unchecked, 14004.59ms Time] [2021-11-13 18:55:53,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35059 states. [2021-11-13 18:55:53,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35059 to 33649. [2021-11-13 18:55:53,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33649 states, 33648 states have (on average 1.226254160722777) internal successors, (41261), 33648 states have internal predecessors, (41261), 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) [2021-11-13 18:55:53,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33649 states to 33649 states and 41261 transitions. [2021-11-13 18:55:53,747 INFO L78 Accepts]: Start accepts. Automaton has 33649 states and 41261 transitions. Word has length 414 [2021-11-13 18:55:53,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:55:53,749 INFO L470 AbstractCegarLoop]: Abstraction has 33649 states and 41261 transitions. [2021-11-13 18:55:53,749 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 95.5) internal successors, (382), 3 states have internal predecessors, (382), 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) [2021-11-13 18:55:53,749 INFO L276 IsEmpty]: Start isEmpty. Operand 33649 states and 41261 transitions. [2021-11-13 18:55:53,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 622 [2021-11-13 18:55:53,774 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:55:53,780 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:55:53,780 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-13 18:55:53,781 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:55:53,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:55:53,783 INFO L85 PathProgramCache]: Analyzing trace with hash 1374719083, now seen corresponding path program 1 times [2021-11-13 18:55:53,783 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:55:53,784 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1522205913] [2021-11-13 18:55:53,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:55:53,784 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:55:53,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:55:54,242 INFO L134 CoverageAnalysis]: Checked inductivity of 623 backedges. 397 proven. 0 refuted. 0 times theorem prover too weak. 226 trivial. 0 not checked. [2021-11-13 18:55:54,243 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:55:54,243 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1522205913] [2021-11-13 18:55:54,243 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1522205913] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:55:54,244 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:55:54,244 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-13 18:55:54,244 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [621908292] [2021-11-13 18:55:54,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:55:54,246 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 18:55:54,246 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:55:54,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 18:55:54,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-13 18:55:54,248 INFO L87 Difference]: Start difference. First operand 33649 states and 41261 transitions. Second operand has 4 states, 4 states have (on average 107.5) internal successors, (430), 3 states have internal predecessors, (430), 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) [2021-11-13 18:56:07,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:56:07,681 INFO L93 Difference]: Finished difference Result 90600 states and 108578 transitions. [2021-11-13 18:56:07,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 18:56:07,682 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 107.5) internal successors, (430), 3 states have internal predecessors, (430), 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 621 [2021-11-13 18:56:07,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:56:07,783 INFO L225 Difference]: With dead ends: 90600 [2021-11-13 18:56:07,783 INFO L226 Difference]: Without dead ends: 56953 [2021-11-13 18:56:07,812 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 [2021-11-13 18:56:07,813 INFO L933 BasicCegarLoop]: 1749 mSDtfsCounter, 3757 mSDsluCounter, 352 mSDsCounter, 0 mSdLazyCounter, 9352 mSolverCounterSat, 263 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10956.35ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3757 SdHoareTripleChecker+Valid, 2101 SdHoareTripleChecker+Invalid, 9615 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 38.84ms SdHoareTripleChecker+Time, 263 IncrementalHoareTripleChecker+Valid, 9352 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12873.55ms IncrementalHoareTripleChecker+Time [2021-11-13 18:56:07,814 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3757 Valid, 2101 Invalid, 9615 Unknown, 0 Unchecked, 38.84ms Time], IncrementalHoareTripleChecker [263 Valid, 9352 Invalid, 0 Unknown, 0 Unchecked, 12873.55ms Time] [2021-11-13 18:56:07,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56953 states. [2021-11-13 18:56:08,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56953 to 52814. [2021-11-13 18:56:08,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52814 states, 52813 states have (on average 1.1741995342055933) internal successors, (62013), 52813 states have internal predecessors, (62013), 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) [2021-11-13 18:56:08,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52814 states to 52814 states and 62013 transitions. [2021-11-13 18:56:08,690 INFO L78 Accepts]: Start accepts. Automaton has 52814 states and 62013 transitions. Word has length 621 [2021-11-13 18:56:08,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:56:08,691 INFO L470 AbstractCegarLoop]: Abstraction has 52814 states and 62013 transitions. [2021-11-13 18:56:08,691 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 107.5) internal successors, (430), 3 states have internal predecessors, (430), 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) [2021-11-13 18:56:08,691 INFO L276 IsEmpty]: Start isEmpty. Operand 52814 states and 62013 transitions. [2021-11-13 18:56:08,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 650 [2021-11-13 18:56:08,715 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:56:08,715 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:56:08,716 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-13 18:56:08,716 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:56:08,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:56:08,717 INFO L85 PathProgramCache]: Analyzing trace with hash 1296139077, now seen corresponding path program 1 times [2021-11-13 18:56:08,717 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:56:08,718 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [114934207] [2021-11-13 18:56:08,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:56:08,718 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:56:08,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:56:09,184 INFO L134 CoverageAnalysis]: Checked inductivity of 635 backedges. 461 proven. 0 refuted. 0 times theorem prover too weak. 174 trivial. 0 not checked. [2021-11-13 18:56:09,186 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:56:09,187 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [114934207] [2021-11-13 18:56:09,187 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [114934207] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:56:09,187 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:56:09,187 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-13 18:56:09,188 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1435290025] [2021-11-13 18:56:09,188 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:56:09,189 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 18:56:09,189 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:56:09,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 18:56:09,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-13 18:56:09,190 INFO L87 Difference]: Start difference. First operand 52814 states and 62013 transitions. Second operand has 4 states, 4 states have (on average 121.0) internal successors, (484), 3 states have internal predecessors, (484), 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) [2021-11-13 18:56:18,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:56:18,425 INFO L93 Difference]: Finished difference Result 108387 states and 126803 transitions. [2021-11-13 18:56:18,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 18:56:18,426 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 121.0) internal successors, (484), 3 states have internal predecessors, (484), 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 649 [2021-11-13 18:56:18,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:56:18,548 INFO L225 Difference]: With dead ends: 108387 [2021-11-13 18:56:18,548 INFO L226 Difference]: Without dead ends: 55544 [2021-11-13 18:56:18,581 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 [2021-11-13 18:56:18,582 INFO L933 BasicCegarLoop]: 1768 mSDtfsCounter, 1153 mSDsluCounter, 179 mSDsCounter, 0 mSdLazyCounter, 5713 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7249.93ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1153 SdHoareTripleChecker+Valid, 1947 SdHoareTripleChecker+Invalid, 5721 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 22.89ms SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 5713 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8743.14ms IncrementalHoareTripleChecker+Time [2021-11-13 18:56:18,583 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1153 Valid, 1947 Invalid, 5721 Unknown, 0 Unchecked, 22.89ms Time], IncrementalHoareTripleChecker [8 Valid, 5713 Invalid, 0 Unknown, 0 Unchecked, 8743.14ms Time] [2021-11-13 18:56:18,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55544 states. [2021-11-13 18:56:19,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55544 to 55544. [2021-11-13 18:56:19,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55544 states, 55543 states have (on average 1.1657274544046954) internal successors, (64748), 55543 states have internal predecessors, (64748), 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) [2021-11-13 18:56:19,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55544 states to 55544 states and 64748 transitions. [2021-11-13 18:56:19,790 INFO L78 Accepts]: Start accepts. Automaton has 55544 states and 64748 transitions. Word has length 649 [2021-11-13 18:56:19,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:56:19,791 INFO L470 AbstractCegarLoop]: Abstraction has 55544 states and 64748 transitions. [2021-11-13 18:56:19,792 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 121.0) internal successors, (484), 3 states have internal predecessors, (484), 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) [2021-11-13 18:56:19,792 INFO L276 IsEmpty]: Start isEmpty. Operand 55544 states and 64748 transitions. [2021-11-13 18:56:19,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 735 [2021-11-13 18:56:19,824 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:56:19,825 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-11-13 18:56:19,826 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-13 18:56:19,826 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:56:19,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:56:19,828 INFO L85 PathProgramCache]: Analyzing trace with hash -818082537, now seen corresponding path program 1 times [2021-11-13 18:56:19,828 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:56:19,828 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1813530732] [2021-11-13 18:56:19,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:56:19,829 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:56:20,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:56:20,871 INFO L134 CoverageAnalysis]: Checked inductivity of 274 backedges. 65 proven. 0 refuted. 0 times theorem prover too weak. 209 trivial. 0 not checked. [2021-11-13 18:56:20,871 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:56:20,871 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1813530732] [2021-11-13 18:56:20,871 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1813530732] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:56:20,872 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:56:20,872 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-13 18:56:20,872 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1859547584] [2021-11-13 18:56:20,873 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:56:20,874 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 18:56:20,874 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:56:20,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 18:56:20,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 18:56:20,876 INFO L87 Difference]: Start difference. First operand 55544 states and 64748 transitions. Second operand has 3 states, 3 states have (on average 175.33333333333334) internal successors, (526), 3 states have internal predecessors, (526), 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) [2021-11-13 18:56:30,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:56:30,549 INFO L93 Difference]: Finished difference Result 133114 states and 156925 transitions. [2021-11-13 18:56:30,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 18:56:30,559 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 175.33333333333334) internal successors, (526), 3 states have internal predecessors, (526), 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 734 [2021-11-13 18:56:30,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:56:30,675 INFO L225 Difference]: With dead ends: 133114 [2021-11-13 18:56:30,676 INFO L226 Difference]: Without dead ends: 80302 [2021-11-13 18:56:30,699 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 18:56:30,700 INFO L933 BasicCegarLoop]: 752 mSDtfsCounter, 1697 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 4261 mSolverCounterSat, 2245 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7668.69ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1697 SdHoareTripleChecker+Valid, 813 SdHoareTripleChecker+Invalid, 6506 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 27.35ms SdHoareTripleChecker+Time, 2245 IncrementalHoareTripleChecker+Valid, 4261 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9107.40ms IncrementalHoareTripleChecker+Time [2021-11-13 18:56:30,701 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1697 Valid, 813 Invalid, 6506 Unknown, 0 Unchecked, 27.35ms Time], IncrementalHoareTripleChecker [2245 Valid, 4261 Invalid, 0 Unknown, 0 Unchecked, 9107.40ms Time] [2021-11-13 18:56:30,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80302 states. [2021-11-13 18:56:31,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80302 to 77413. [2021-11-13 18:56:31,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77413 states, 77412 states have (on average 1.182491086653232) internal successors, (91539), 77412 states have internal predecessors, (91539), 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) [2021-11-13 18:56:31,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77413 states to 77413 states and 91539 transitions. [2021-11-13 18:56:31,960 INFO L78 Accepts]: Start accepts. Automaton has 77413 states and 91539 transitions. Word has length 734 [2021-11-13 18:56:31,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:56:31,962 INFO L470 AbstractCegarLoop]: Abstraction has 77413 states and 91539 transitions. [2021-11-13 18:56:31,962 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 175.33333333333334) internal successors, (526), 3 states have internal predecessors, (526), 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) [2021-11-13 18:56:31,962 INFO L276 IsEmpty]: Start isEmpty. Operand 77413 states and 91539 transitions. [2021-11-13 18:56:31,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 742 [2021-11-13 18:56:31,971 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:56:31,973 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-11-13 18:56:31,973 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-13 18:56:31,973 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:56:31,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:56:31,974 INFO L85 PathProgramCache]: Analyzing trace with hash -1534291406, now seen corresponding path program 1 times [2021-11-13 18:56:31,974 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:56:31,975 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [935782927] [2021-11-13 18:56:31,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:56:31,975 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:56:32,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:56:33,262 INFO L134 CoverageAnalysis]: Checked inductivity of 283 backedges. 65 proven. 218 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:56:33,263 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:56:33,263 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [935782927] [2021-11-13 18:56:33,263 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [935782927] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-13 18:56:33,263 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [471674525] [2021-11-13 18:56:33,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:56:33,264 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 18:56:33,264 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7e140ca-7ac9-4ced-a6c0-01031246e932/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 18:56:33,266 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7e140ca-7ac9-4ced-a6c0-01031246e932/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 18:56:33,296 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7e140ca-7ac9-4ced-a6c0-01031246e932/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-13 18:56:33,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:56:33,691 INFO L263 TraceCheckSpWp]: Trace formula consists of 863 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-13 18:56:33,720 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:56:35,482 INFO L134 CoverageAnalysis]: Checked inductivity of 283 backedges. 65 proven. 0 refuted. 0 times theorem prover too weak. 218 trivial. 0 not checked. [2021-11-13 18:56:35,483 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-13 18:56:35,483 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [471674525] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:56:35,484 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-13 18:56:35,484 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 8 [2021-11-13 18:56:35,485 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [283111991] [2021-11-13 18:56:35,485 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:56:35,487 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 18:56:35,487 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:56:35,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 18:56:35,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-11-13 18:56:35,488 INFO L87 Difference]: Start difference. First operand 77413 states and 91539 transitions. Second operand has 3 states, 3 states have (on average 174.66666666666666) internal successors, (524), 3 states have internal predecessors, (524), 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) [2021-11-13 18:56:45,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:56:45,941 INFO L93 Difference]: Finished difference Result 208111 states and 248507 transitions. [2021-11-13 18:56:45,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 18:56:45,941 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 174.66666666666666) internal successors, (524), 3 states have internal predecessors, (524), 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 741 [2021-11-13 18:56:45,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:56:46,314 INFO L225 Difference]: With dead ends: 208111 [2021-11-13 18:56:46,314 INFO L226 Difference]: Without dead ends: 133430 [2021-11-13 18:56:46,361 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 746 GetRequests, 740 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-11-13 18:56:46,364 INFO L933 BasicCegarLoop]: 1535 mSDtfsCounter, 1526 mSDsluCounter, 130 mSDsCounter, 0 mSdLazyCounter, 5053 mSolverCounterSat, 1001 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8213.89ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1526 SdHoareTripleChecker+Valid, 1665 SdHoareTripleChecker+Invalid, 6054 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 28.12ms SdHoareTripleChecker+Time, 1001 IncrementalHoareTripleChecker+Valid, 5053 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9665.43ms IncrementalHoareTripleChecker+Time [2021-11-13 18:56:46,364 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1526 Valid, 1665 Invalid, 6054 Unknown, 0 Unchecked, 28.12ms Time], IncrementalHoareTripleChecker [1001 Valid, 5053 Invalid, 0 Unknown, 0 Unchecked, 9665.43ms Time] [2021-11-13 18:56:46,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133430 states. [2021-11-13 18:56:48,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133430 to 122473. [2021-11-13 18:56:48,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122473 states, 122472 states have (on average 1.1725210660395846) internal successors, (143601), 122472 states have internal predecessors, (143601), 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) [2021-11-13 18:56:48,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122473 states to 122473 states and 143601 transitions. [2021-11-13 18:56:48,606 INFO L78 Accepts]: Start accepts. Automaton has 122473 states and 143601 transitions. Word has length 741 [2021-11-13 18:56:48,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:56:48,637 INFO L470 AbstractCegarLoop]: Abstraction has 122473 states and 143601 transitions. [2021-11-13 18:56:48,637 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 174.66666666666666) internal successors, (524), 3 states have internal predecessors, (524), 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) [2021-11-13 18:56:48,637 INFO L276 IsEmpty]: Start isEmpty. Operand 122473 states and 143601 transitions. [2021-11-13 18:56:48,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 988 [2021-11-13 18:56:48,683 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:56:48,683 INFO L514 BasicCegarLoop]: trace histogram [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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-11-13 18:56:48,723 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7e140ca-7ac9-4ced-a6c0-01031246e932/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-13 18:56:48,898 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7e140ca-7ac9-4ced-a6c0-01031246e932/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 18:56:48,899 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:56:48,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:56:48,900 INFO L85 PathProgramCache]: Analyzing trace with hash 316890023, now seen corresponding path program 1 times [2021-11-13 18:56:48,900 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:56:48,900 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1500500968] [2021-11-13 18:56:48,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:56:48,901 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:56:49,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:56:49,432 INFO L134 CoverageAnalysis]: Checked inductivity of 926 backedges. 527 proven. 0 refuted. 0 times theorem prover too weak. 399 trivial. 0 not checked. [2021-11-13 18:56:49,433 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:56:49,433 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1500500968] [2021-11-13 18:56:49,433 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1500500968] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:56:49,433 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:56:49,434 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-13 18:56:49,434 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [163349530] [2021-11-13 18:56:49,434 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:56:49,436 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 18:56:49,436 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:56:49,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 18:56:49,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 18:56:49,437 INFO L87 Difference]: Start difference. First operand 122473 states and 143601 transitions. Second operand has 3 states, 3 states have (on average 208.0) internal successors, (624), 2 states have internal predecessors, (624), 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) [2021-11-13 18:56:58,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:56:58,810 INFO L93 Difference]: Finished difference Result 276354 states and 325567 transitions. [2021-11-13 18:56:58,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 18:56:58,811 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 208.0) internal successors, (624), 2 states have internal predecessors, (624), 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 987 [2021-11-13 18:56:58,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:56:59,056 INFO L225 Difference]: With dead ends: 276354 [2021-11-13 18:56:59,056 INFO L226 Difference]: Without dead ends: 156613 [2021-11-13 18:56:59,117 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 [2021-11-13 18:56:59,118 INFO L933 BasicCegarLoop]: 717 mSDtfsCounter, 1384 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 3925 mSolverCounterSat, 1881 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6752.67ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1384 SdHoareTripleChecker+Valid, 767 SdHoareTripleChecker+Invalid, 5806 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 25.08ms SdHoareTripleChecker+Time, 1881 IncrementalHoareTripleChecker+Valid, 3925 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8123.25ms IncrementalHoareTripleChecker+Time [2021-11-13 18:56:59,119 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1384 Valid, 767 Invalid, 5806 Unknown, 0 Unchecked, 25.08ms Time], IncrementalHoareTripleChecker [1881 Valid, 3925 Invalid, 0 Unknown, 0 Unchecked, 8123.25ms Time] [2021-11-13 18:56:59,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156613 states. [2021-11-13 18:57:01,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156613 to 153858. [2021-11-13 18:57:01,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 153858 states, 153857 states have (on average 1.1547995866291427) internal successors, (177674), 153857 states have internal predecessors, (177674), 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) [2021-11-13 18:57:02,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153858 states to 153858 states and 177674 transitions. [2021-11-13 18:57:02,215 INFO L78 Accepts]: Start accepts. Automaton has 153858 states and 177674 transitions. Word has length 987 [2021-11-13 18:57:02,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:57:02,216 INFO L470 AbstractCegarLoop]: Abstraction has 153858 states and 177674 transitions. [2021-11-13 18:57:02,217 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 208.0) internal successors, (624), 2 states have internal predecessors, (624), 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) [2021-11-13 18:57:02,217 INFO L276 IsEmpty]: Start isEmpty. Operand 153858 states and 177674 transitions. [2021-11-13 18:57:02,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1022 [2021-11-13 18:57:02,261 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:57:02,263 INFO L514 BasicCegarLoop]: trace histogram [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, 4, 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, 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] [2021-11-13 18:57:02,263 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-13 18:57:02,264 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:57:02,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:57:02,277 INFO L85 PathProgramCache]: Analyzing trace with hash -1605686564, now seen corresponding path program 1 times [2021-11-13 18:57:02,278 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:57:02,278 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [310063659] [2021-11-13 18:57:02,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:57:02,279 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:57:02,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:57:02,974 INFO L134 CoverageAnalysis]: Checked inductivity of 997 backedges. 755 proven. 0 refuted. 0 times theorem prover too weak. 242 trivial. 0 not checked. [2021-11-13 18:57:02,974 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:57:02,974 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [310063659] [2021-11-13 18:57:02,975 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [310063659] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:57:02,975 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:57:02,975 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-13 18:57:02,976 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1568217506] [2021-11-13 18:57:02,976 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:57:02,978 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 18:57:02,978 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:57:02,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 18:57:02,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-13 18:57:02,980 INFO L87 Difference]: Start difference. First operand 153858 states and 177674 transitions. Second operand has 4 states, 4 states have (on average 195.25) internal successors, (781), 4 states have internal predecessors, (781), 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) [2021-11-13 18:57:19,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:57:19,349 INFO L93 Difference]: Finished difference Result 482748 states and 564874 transitions. [2021-11-13 18:57:19,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 18:57:19,349 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 195.25) internal successors, (781), 4 states have internal predecessors, (781), 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 1021 [2021-11-13 18:57:19,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:57:19,803 INFO L225 Difference]: With dead ends: 482748 [2021-11-13 18:57:19,803 INFO L226 Difference]: Without dead ends: 331622 [2021-11-13 18:57:19,882 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-13 18:57:19,883 INFO L933 BasicCegarLoop]: 1085 mSDtfsCounter, 3261 mSDsluCounter, 341 mSDsCounter, 0 mSdLazyCounter, 8888 mSolverCounterSat, 2744 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11974.80ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3261 SdHoareTripleChecker+Valid, 1426 SdHoareTripleChecker+Invalid, 11632 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 46.41ms SdHoareTripleChecker+Time, 2744 IncrementalHoareTripleChecker+Valid, 8888 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14274.83ms IncrementalHoareTripleChecker+Time [2021-11-13 18:57:19,883 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3261 Valid, 1426 Invalid, 11632 Unknown, 0 Unchecked, 46.41ms Time], IncrementalHoareTripleChecker [2744 Valid, 8888 Invalid, 0 Unknown, 0 Unchecked, 14274.83ms Time] [2021-11-13 18:57:20,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 331622 states. [2021-11-13 18:57:24,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 331622 to 323269. [2021-11-13 18:57:24,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 323269 states, 323268 states have (on average 1.1486846826781494) internal successors, (371333), 323268 states have internal predecessors, (371333), 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) [2021-11-13 18:57:25,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 323269 states to 323269 states and 371333 transitions. [2021-11-13 18:57:25,385 INFO L78 Accepts]: Start accepts. Automaton has 323269 states and 371333 transitions. Word has length 1021 [2021-11-13 18:57:25,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:57:25,385 INFO L470 AbstractCegarLoop]: Abstraction has 323269 states and 371333 transitions. [2021-11-13 18:57:25,386 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 195.25) internal successors, (781), 4 states have internal predecessors, (781), 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) [2021-11-13 18:57:25,386 INFO L276 IsEmpty]: Start isEmpty. Operand 323269 states and 371333 transitions. [2021-11-13 18:57:26,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1031 [2021-11-13 18:57:26,061 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:57:26,062 INFO L514 BasicCegarLoop]: trace histogram [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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2021-11-13 18:57:26,063 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-13 18:57:26,063 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:57:26,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:57:26,064 INFO L85 PathProgramCache]: Analyzing trace with hash -1459497869, now seen corresponding path program 1 times [2021-11-13 18:57:26,064 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:57:26,064 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [420612750] [2021-11-13 18:57:26,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:57:26,064 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:57:26,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:57:26,866 INFO L134 CoverageAnalysis]: Checked inductivity of 1024 backedges. 357 proven. 271 refuted. 0 times theorem prover too weak. 396 trivial. 0 not checked. [2021-11-13 18:57:26,866 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:57:26,867 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [420612750] [2021-11-13 18:57:26,867 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [420612750] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-13 18:57:26,867 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [605844218] [2021-11-13 18:57:26,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:57:26,867 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 18:57:26,868 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7e140ca-7ac9-4ced-a6c0-01031246e932/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 18:57:26,871 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7e140ca-7ac9-4ced-a6c0-01031246e932/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 18:57:26,890 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7e140ca-7ac9-4ced-a6c0-01031246e932/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-13 18:57:27,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:57:27,140 INFO L263 TraceCheckSpWp]: Trace formula consists of 1207 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-13 18:57:27,161 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:57:28,808 INFO L134 CoverageAnalysis]: Checked inductivity of 1024 backedges. 131 proven. 0 refuted. 0 times theorem prover too weak. 893 trivial. 0 not checked. [2021-11-13 18:57:28,808 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-13 18:57:28,809 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [605844218] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:57:28,809 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-13 18:57:28,809 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2021-11-13 18:57:28,809 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2046562071] [2021-11-13 18:57:28,809 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:57:28,810 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 18:57:28,811 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:57:28,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 18:57:28,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-13 18:57:28,812 INFO L87 Difference]: Start difference. First operand 323269 states and 371333 transitions. Second operand has 3 states, 3 states have (on average 176.0) internal successors, (528), 3 states have internal predecessors, (528), 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) [2021-11-13 18:57:39,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:57:39,496 INFO L93 Difference]: Finished difference Result 706608 states and 817401 transitions. [2021-11-13 18:57:39,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 18:57:39,496 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 176.0) internal successors, (528), 3 states have internal predecessors, (528), 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 1030 [2021-11-13 18:57:39,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:57:40,069 INFO L225 Difference]: With dead ends: 706608 [2021-11-13 18:57:40,069 INFO L226 Difference]: Without dead ends: 386071 [2021-11-13 18:57:40,214 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1034 GetRequests, 1030 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-13 18:57:40,215 INFO L933 BasicCegarLoop]: 1058 mSDtfsCounter, 1624 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 4853 mSolverCounterSat, 980 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6282.06ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1624 SdHoareTripleChecker+Valid, 1134 SdHoareTripleChecker+Invalid, 5833 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 26.10ms SdHoareTripleChecker+Time, 980 IncrementalHoareTripleChecker+Valid, 4853 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7768.81ms IncrementalHoareTripleChecker+Time [2021-11-13 18:57:40,216 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1624 Valid, 1134 Invalid, 5833 Unknown, 0 Unchecked, 26.10ms Time], IncrementalHoareTripleChecker [980 Valid, 4853 Invalid, 0 Unknown, 0 Unchecked, 7768.81ms Time] [2021-11-13 18:57:40,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 386071 states. [2021-11-13 18:57:45,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 386071 to 375139. [2021-11-13 18:57:46,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 375139 states, 375138 states have (on average 1.1582217743870256) internal successors, (434493), 375138 states have internal predecessors, (434493), 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) [2021-11-13 18:57:47,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 375139 states to 375139 states and 434493 transitions. [2021-11-13 18:57:47,148 INFO L78 Accepts]: Start accepts. Automaton has 375139 states and 434493 transitions. Word has length 1030 [2021-11-13 18:57:47,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:57:47,150 INFO L470 AbstractCegarLoop]: Abstraction has 375139 states and 434493 transitions. [2021-11-13 18:57:47,150 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 176.0) internal successors, (528), 3 states have internal predecessors, (528), 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) [2021-11-13 18:57:47,150 INFO L276 IsEmpty]: Start isEmpty. Operand 375139 states and 434493 transitions. [2021-11-13 18:57:47,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1143 [2021-11-13 18:57:47,186 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:57:47,187 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-11-13 18:57:47,212 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7e140ca-7ac9-4ced-a6c0-01031246e932/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-13 18:57:47,387 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7e140ca-7ac9-4ced-a6c0-01031246e932/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 18:57:47,388 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:57:47,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:57:47,389 INFO L85 PathProgramCache]: Analyzing trace with hash -1694203674, now seen corresponding path program 1 times [2021-11-13 18:57:47,389 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:57:47,389 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1524290681] [2021-11-13 18:57:47,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:57:47,390 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:57:47,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:57:49,119 INFO L134 CoverageAnalysis]: Checked inductivity of 1499 backedges. 164 proven. 0 refuted. 0 times theorem prover too weak. 1335 trivial. 0 not checked. [2021-11-13 18:57:49,120 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:57:49,124 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1524290681] [2021-11-13 18:57:49,125 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1524290681] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:57:49,125 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:57:49,125 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-13 18:57:49,126 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [204923400] [2021-11-13 18:57:49,126 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:57:49,128 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 18:57:49,129 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:57:49,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 18:57:49,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 18:57:49,131 INFO L87 Difference]: Start difference. First operand 375139 states and 434493 transitions. Second operand has 3 states, 3 states have (on average 175.66666666666666) internal successors, (527), 3 states have internal predecessors, (527), 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)