./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem13_label03.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ab7d949-290c-4831-b02b-f82bec78b842/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ab7d949-290c-4831-b02b-f82bec78b842/bin/uautomizer-uyxdKDjOR8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ab7d949-290c-4831-b02b-f82bec78b842/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ab7d949-290c-4831-b02b-f82bec78b842/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem13_label03.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ab7d949-290c-4831-b02b-f82bec78b842/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ab7d949-290c-4831-b02b-f82bec78b842/bin/uautomizer-uyxdKDjOR8 --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 39b8a4ae0f070887d4af4fec410b03e79c801778085245d1dd791c56546c3332 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-2329fc7 [2022-12-13 21:48:42,409 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 21:48:42,411 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 21:48:42,425 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 21:48:42,426 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 21:48:42,426 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 21:48:42,427 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 21:48:42,428 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 21:48:42,429 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 21:48:42,430 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 21:48:42,431 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 21:48:42,431 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 21:48:42,432 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 21:48:42,432 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 21:48:42,433 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 21:48:42,434 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 21:48:42,435 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 21:48:42,435 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 21:48:42,437 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 21:48:42,438 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 21:48:42,439 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 21:48:42,440 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 21:48:42,441 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 21:48:42,442 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 21:48:42,446 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 21:48:42,446 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 21:48:42,446 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 21:48:42,447 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 21:48:42,448 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 21:48:42,450 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 21:48:42,450 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 21:48:42,451 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 21:48:42,452 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 21:48:42,453 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 21:48:42,454 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 21:48:42,454 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 21:48:42,454 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 21:48:42,454 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 21:48:42,454 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 21:48:42,455 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 21:48:42,455 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 21:48:42,456 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ab7d949-290c-4831-b02b-f82bec78b842/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-12-13 21:48:42,480 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 21:48:42,480 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 21:48:42,480 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 21:48:42,481 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 21:48:42,481 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 21:48:42,482 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 21:48:42,482 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 21:48:42,482 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 21:48:42,483 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 21:48:42,483 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 21:48:42,483 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 21:48:42,483 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 21:48:42,483 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 21:48:42,483 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 21:48:42,484 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 21:48:42,484 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 21:48:42,484 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 21:48:42,484 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 21:48:42,484 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 21:48:42,484 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 21:48:42,484 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 21:48:42,484 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 21:48:42,485 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 21:48:42,485 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 21:48:42,485 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 21:48:42,485 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 21:48:42,485 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 21:48:42,485 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 21:48:42,485 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 21:48:42,486 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 21:48:42,486 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 21:48:42,486 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 21:48:42,486 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 21:48:42,486 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 21:48:42,486 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 21:48:42,486 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_4ab7d949-290c-4831-b02b-f82bec78b842/bin/uautomizer-uyxdKDjOR8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ab7d949-290c-4831-b02b-f82bec78b842/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 39b8a4ae0f070887d4af4fec410b03e79c801778085245d1dd791c56546c3332 [2022-12-13 21:48:42,647 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 21:48:42,666 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 21:48:42,668 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 21:48:42,669 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 21:48:42,670 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 21:48:42,671 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ab7d949-290c-4831-b02b-f82bec78b842/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/eca-rers2012/Problem13_label03.c [2022-12-13 21:48:45,230 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 21:48:45,564 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 21:48:45,564 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ab7d949-290c-4831-b02b-f82bec78b842/sv-benchmarks/c/eca-rers2012/Problem13_label03.c [2022-12-13 21:48:45,589 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ab7d949-290c-4831-b02b-f82bec78b842/bin/uautomizer-uyxdKDjOR8/data/af2c779c4/07f6be44fb58431297759a05d9e96051/FLAGcc312416c [2022-12-13 21:48:45,599 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ab7d949-290c-4831-b02b-f82bec78b842/bin/uautomizer-uyxdKDjOR8/data/af2c779c4/07f6be44fb58431297759a05d9e96051 [2022-12-13 21:48:45,601 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 21:48:45,602 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 21:48:45,603 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 21:48:45,603 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 21:48:45,606 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 21:48:45,607 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 09:48:45" (1/1) ... [2022-12-13 21:48:45,608 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@22196588 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:48:45, skipping insertion in model container [2022-12-13 21:48:45,608 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 09:48:45" (1/1) ... [2022-12-13 21:48:45,614 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 21:48:45,695 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 21:48:45,893 WARN L237 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_4ab7d949-290c-4831-b02b-f82bec78b842/sv-benchmarks/c/eca-rers2012/Problem13_label03.c[5036,5049] [2022-12-13 21:48:46,740 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 21:48:46,747 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 21:48:46,761 WARN L237 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_4ab7d949-290c-4831-b02b-f82bec78b842/sv-benchmarks/c/eca-rers2012/Problem13_label03.c[5036,5049] [2022-12-13 21:48:47,212 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 21:48:47,227 INFO L208 MainTranslator]: Completed translation [2022-12-13 21:48:47,228 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:48:47 WrapperNode [2022-12-13 21:48:47,228 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 21:48:47,229 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 21:48:47,229 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 21:48:47,229 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 21:48:47,234 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:48:47" (1/1) ... [2022-12-13 21:48:47,275 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:48:47" (1/1) ... [2022-12-13 21:48:47,612 INFO L138 Inliner]: procedures = 17, calls = 11, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 5583 [2022-12-13 21:48:47,612 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 21:48:47,613 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 21:48:47,613 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 21:48:47,613 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 21:48:47,622 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:48:47" (1/1) ... [2022-12-13 21:48:47,623 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:48:47" (1/1) ... [2022-12-13 21:48:47,709 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:48:47" (1/1) ... [2022-12-13 21:48:47,709 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:48:47" (1/1) ... [2022-12-13 21:48:47,847 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:48:47" (1/1) ... [2022-12-13 21:48:47,863 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:48:47" (1/1) ... [2022-12-13 21:48:47,891 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:48:47" (1/1) ... [2022-12-13 21:48:47,933 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:48:47" (1/1) ... [2022-12-13 21:48:47,984 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 21:48:47,985 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 21:48:47,985 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 21:48:47,985 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 21:48:47,986 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:48:47" (1/1) ... [2022-12-13 21:48:47,990 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 21:48:47,999 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ab7d949-290c-4831-b02b-f82bec78b842/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 21:48:48,010 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ab7d949-290c-4831-b02b-f82bec78b842/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 21:48:48,012 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ab7d949-290c-4831-b02b-f82bec78b842/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 21:48:48,042 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 21:48:48,042 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 21:48:48,042 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 21:48:48,042 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 21:48:48,096 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 21:48:48,097 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 21:48:52,505 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 21:48:52,518 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 21:48:52,518 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-12-13 21:48:52,520 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 09:48:52 BoogieIcfgContainer [2022-12-13 21:48:52,520 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 21:48:52,522 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 21:48:52,522 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 21:48:52,524 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 21:48:52,524 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 09:48:45" (1/3) ... [2022-12-13 21:48:52,525 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15974a35 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 09:48:52, skipping insertion in model container [2022-12-13 21:48:52,525 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:48:47" (2/3) ... [2022-12-13 21:48:52,525 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15974a35 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 09:48:52, skipping insertion in model container [2022-12-13 21:48:52,525 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 09:48:52" (3/3) ... [2022-12-13 21:48:52,526 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem13_label03.c [2022-12-13 21:48:52,539 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 21:48:52,539 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-13 21:48:52,589 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 21:48:52,594 INFO L357 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@15fb6e54, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 21:48:52,594 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-12-13 21:48:52,600 INFO L276 IsEmpty]: Start isEmpty. Operand has 1098 states, 1096 states have (on average 1.8275547445255473) internal successors, (2003), 1097 states have internal predecessors, (2003), 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) [2022-12-13 21:48:52,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-12-13 21:48:52,605 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 21:48:52,606 INFO L195 NwaCegarLoop]: 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] [2022-12-13 21:48:52,606 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 21:48:52,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:48:52,610 INFO L85 PathProgramCache]: Analyzing trace with hash 1089129850, now seen corresponding path program 1 times [2022-12-13 21:48:52,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:48:52,616 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1520538686] [2022-12-13 21:48:52,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:48:52,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:48:52,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:48:52,823 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:48:52,823 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:48:52,823 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1520538686] [2022-12-13 21:48:52,824 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1520538686] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:48:52,824 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:48:52,824 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 21:48:52,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1987916134] [2022-12-13 21:48:52,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:48:52,828 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 21:48:52,829 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:48:52,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 21:48:52,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 21:48:52,853 INFO L87 Difference]: Start difference. First operand has 1098 states, 1096 states have (on average 1.8275547445255473) internal successors, (2003), 1097 states have internal predecessors, (2003), 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 11.333333333333334) internal successors, (34), 2 states have internal predecessors, (34), 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) [2022-12-13 21:48:57,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 21:48:57,118 INFO L93 Difference]: Finished difference Result 3160 states and 5843 transitions. [2022-12-13 21:48:57,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 21:48:57,119 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 2 states have internal predecessors, (34), 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 34 [2022-12-13 21:48:57,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 21:48:57,134 INFO L225 Difference]: With dead ends: 3160 [2022-12-13 21:48:57,134 INFO L226 Difference]: Without dead ends: 1983 [2022-12-13 21:48:57,138 INFO L412 NwaCegarLoop]: 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 [2022-12-13 21:48:57,140 INFO L413 NwaCegarLoop]: 243 mSDtfsCounter, 1069 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 3030 mSolverCounterSat, 974 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1069 SdHoareTripleChecker+Valid, 340 SdHoareTripleChecker+Invalid, 4004 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 974 IncrementalHoareTripleChecker+Valid, 3030 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2022-12-13 21:48:57,141 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1069 Valid, 340 Invalid, 4004 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [974 Valid, 3030 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2022-12-13 21:48:57,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1983 states. [2022-12-13 21:48:57,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1983 to 1930. [2022-12-13 21:48:57,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1930 states, 1929 states have (on average 1.7973043027475375) internal successors, (3467), 1929 states have internal predecessors, (3467), 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) [2022-12-13 21:48:57,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1930 states to 1930 states and 3467 transitions. [2022-12-13 21:48:57,216 INFO L78 Accepts]: Start accepts. Automaton has 1930 states and 3467 transitions. Word has length 34 [2022-12-13 21:48:57,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 21:48:57,216 INFO L495 AbstractCegarLoop]: Abstraction has 1930 states and 3467 transitions. [2022-12-13 21:48:57,216 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 2 states have internal predecessors, (34), 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) [2022-12-13 21:48:57,217 INFO L276 IsEmpty]: Start isEmpty. Operand 1930 states and 3467 transitions. [2022-12-13 21:48:57,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-12-13 21:48:57,218 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 21:48:57,218 INFO L195 NwaCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:48:57,218 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 21:48:57,219 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 21:48:57,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:48:57,219 INFO L85 PathProgramCache]: Analyzing trace with hash -1620758014, now seen corresponding path program 1 times [2022-12-13 21:48:57,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:48:57,220 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1867170616] [2022-12-13 21:48:57,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:48:57,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:48:57,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:48:57,393 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:48:57,393 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:48:57,393 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1867170616] [2022-12-13 21:48:57,393 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1867170616] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:48:57,394 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:48:57,394 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 21:48:57,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1570337680] [2022-12-13 21:48:57,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:48:57,395 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 21:48:57,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:48:57,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 21:48:57,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 21:48:57,397 INFO L87 Difference]: Start difference. First operand 1930 states and 3467 transitions. Second operand has 3 states, 3 states have (on average 33.0) internal successors, (99), 2 states have internal predecessors, (99), 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) [2022-12-13 21:49:00,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 21:49:00,743 INFO L93 Difference]: Finished difference Result 5456 states and 9917 transitions. [2022-12-13 21:49:00,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 21:49:00,744 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 2 states have internal predecessors, (99), 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 99 [2022-12-13 21:49:00,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 21:49:00,751 INFO L225 Difference]: With dead ends: 5456 [2022-12-13 21:49:00,751 INFO L226 Difference]: Without dead ends: 3528 [2022-12-13 21:49:00,752 INFO L412 NwaCegarLoop]: 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 [2022-12-13 21:49:00,753 INFO L413 NwaCegarLoop]: 855 mSDtfsCounter, 923 mSDsluCounter, 152 mSDsCounter, 0 mSdLazyCounter, 2309 mSolverCounterSat, 878 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 923 SdHoareTripleChecker+Valid, 1007 SdHoareTripleChecker+Invalid, 3187 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 878 IncrementalHoareTripleChecker+Valid, 2309 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2022-12-13 21:49:00,754 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [923 Valid, 1007 Invalid, 3187 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [878 Valid, 2309 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2022-12-13 21:49:00,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3528 states. [2022-12-13 21:49:00,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3528 to 3526. [2022-12-13 21:49:00,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3526 states, 3525 states have (on average 1.5670921985815602) internal successors, (5524), 3525 states have internal predecessors, (5524), 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) [2022-12-13 21:49:00,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3526 states to 3526 states and 5524 transitions. [2022-12-13 21:49:00,802 INFO L78 Accepts]: Start accepts. Automaton has 3526 states and 5524 transitions. Word has length 99 [2022-12-13 21:49:00,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 21:49:00,802 INFO L495 AbstractCegarLoop]: Abstraction has 3526 states and 5524 transitions. [2022-12-13 21:49:00,803 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 2 states have internal predecessors, (99), 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) [2022-12-13 21:49:00,803 INFO L276 IsEmpty]: Start isEmpty. Operand 3526 states and 5524 transitions. [2022-12-13 21:49:00,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2022-12-13 21:49:00,804 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 21:49:00,805 INFO L195 NwaCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:49:00,805 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-13 21:49:00,805 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 21:49:00,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:49:00,805 INFO L85 PathProgramCache]: Analyzing trace with hash 1762154579, now seen corresponding path program 1 times [2022-12-13 21:49:00,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:49:00,805 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [120589329] [2022-12-13 21:49:00,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:49:00,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:49:00,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:49:00,903 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:49:00,904 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:49:00,904 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [120589329] [2022-12-13 21:49:00,904 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [120589329] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:49:00,904 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:49:00,904 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 21:49:00,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1974114016] [2022-12-13 21:49:00,905 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:49:00,905 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 21:49:00,905 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:49:00,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 21:49:00,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 21:49:00,906 INFO L87 Difference]: Start difference. First operand 3526 states and 5524 transitions. Second operand has 3 states, 3 states have (on average 35.0) internal successors, (105), 2 states have internal predecessors, (105), 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) [2022-12-13 21:49:03,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 21:49:03,898 INFO L93 Difference]: Finished difference Result 10232 states and 16097 transitions. [2022-12-13 21:49:03,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 21:49:03,898 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 2 states have internal predecessors, (105), 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 105 [2022-12-13 21:49:03,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 21:49:03,935 INFO L225 Difference]: With dead ends: 10232 [2022-12-13 21:49:03,935 INFO L226 Difference]: Without dead ends: 6708 [2022-12-13 21:49:03,940 INFO L412 NwaCegarLoop]: 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 [2022-12-13 21:49:03,941 INFO L413 NwaCegarLoop]: 717 mSDtfsCounter, 972 mSDsluCounter, 133 mSDsCounter, 0 mSdLazyCounter, 2534 mSolverCounterSat, 775 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 972 SdHoareTripleChecker+Valid, 850 SdHoareTripleChecker+Invalid, 3309 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 775 IncrementalHoareTripleChecker+Valid, 2534 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-12-13 21:49:03,942 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [972 Valid, 850 Invalid, 3309 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [775 Valid, 2534 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2022-12-13 21:49:03,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6708 states. [2022-12-13 21:49:04,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6708 to 6700. [2022-12-13 21:49:04,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6700 states, 6699 states have (on average 1.413046723391551) internal successors, (9466), 6699 states have internal predecessors, (9466), 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) [2022-12-13 21:49:04,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6700 states to 6700 states and 9466 transitions. [2022-12-13 21:49:04,056 INFO L78 Accepts]: Start accepts. Automaton has 6700 states and 9466 transitions. Word has length 105 [2022-12-13 21:49:04,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 21:49:04,057 INFO L495 AbstractCegarLoop]: Abstraction has 6700 states and 9466 transitions. [2022-12-13 21:49:04,057 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 2 states have internal predecessors, (105), 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) [2022-12-13 21:49:04,057 INFO L276 IsEmpty]: Start isEmpty. Operand 6700 states and 9466 transitions. [2022-12-13 21:49:04,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2022-12-13 21:49:04,058 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 21:49:04,058 INFO L195 NwaCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:49:04,059 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-13 21:49:04,059 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 21:49:04,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:49:04,059 INFO L85 PathProgramCache]: Analyzing trace with hash 684107752, now seen corresponding path program 1 times [2022-12-13 21:49:04,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:49:04,060 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2026296059] [2022-12-13 21:49:04,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:49:04,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:49:04,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:49:04,170 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:49:04,171 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:49:04,171 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2026296059] [2022-12-13 21:49:04,171 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2026296059] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:49:04,171 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:49:04,171 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 21:49:04,171 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2038009619] [2022-12-13 21:49:04,172 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:49:04,172 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 21:49:04,172 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:49:04,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 21:49:04,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 21:49:04,173 INFO L87 Difference]: Start difference. First operand 6700 states and 9466 transitions. Second operand has 3 states, 3 states have (on average 45.0) internal successors, (135), 2 states have internal predecessors, (135), 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) [2022-12-13 21:49:07,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 21:49:07,783 INFO L93 Difference]: Finished difference Result 17443 states and 24479 transitions. [2022-12-13 21:49:07,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 21:49:07,784 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.0) internal successors, (135), 2 states have internal predecessors, (135), 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 135 [2022-12-13 21:49:07,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 21:49:07,801 INFO L225 Difference]: With dead ends: 17443 [2022-12-13 21:49:07,801 INFO L226 Difference]: Without dead ends: 10745 [2022-12-13 21:49:07,805 INFO L412 NwaCegarLoop]: 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 [2022-12-13 21:49:07,805 INFO L413 NwaCegarLoop]: 834 mSDtfsCounter, 844 mSDsluCounter, 131 mSDsCounter, 0 mSdLazyCounter, 3291 mSolverCounterSat, 450 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 844 SdHoareTripleChecker+Valid, 965 SdHoareTripleChecker+Invalid, 3741 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 450 IncrementalHoareTripleChecker+Valid, 3291 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2022-12-13 21:49:07,806 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [844 Valid, 965 Invalid, 3741 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [450 Valid, 3291 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2022-12-13 21:49:07,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10745 states. [2022-12-13 21:49:07,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10745 to 10669. [2022-12-13 21:49:07,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10669 states, 10668 states have (on average 1.3562992125984252) internal successors, (14469), 10668 states have internal predecessors, (14469), 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) [2022-12-13 21:49:07,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10669 states to 10669 states and 14469 transitions. [2022-12-13 21:49:07,952 INFO L78 Accepts]: Start accepts. Automaton has 10669 states and 14469 transitions. Word has length 135 [2022-12-13 21:49:07,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 21:49:07,953 INFO L495 AbstractCegarLoop]: Abstraction has 10669 states and 14469 transitions. [2022-12-13 21:49:07,953 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.0) internal successors, (135), 2 states have internal predecessors, (135), 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) [2022-12-13 21:49:07,953 INFO L276 IsEmpty]: Start isEmpty. Operand 10669 states and 14469 transitions. [2022-12-13 21:49:07,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-12-13 21:49:07,955 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 21:49:07,955 INFO L195 NwaCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:49:07,955 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-13 21:49:07,956 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 21:49:07,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:49:07,956 INFO L85 PathProgramCache]: Analyzing trace with hash 607750639, now seen corresponding path program 1 times [2022-12-13 21:49:07,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:49:07,957 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [425903458] [2022-12-13 21:49:07,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:49:07,957 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:49:07,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:49:08,250 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:49:08,251 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:49:08,251 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [425903458] [2022-12-13 21:49:08,251 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [425903458] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:49:08,251 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:49:08,251 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 21:49:08,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1513651367] [2022-12-13 21:49:08,251 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:49:08,252 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 21:49:08,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:49:08,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 21:49:08,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 21:49:08,253 INFO L87 Difference]: Start difference. First operand 10669 states and 14469 transitions. Second operand has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 2 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:49:11,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 21:49:11,274 INFO L93 Difference]: Finished difference Result 20549 states and 28119 transitions. [2022-12-13 21:49:11,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 21:49:11,275 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 2 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 145 [2022-12-13 21:49:11,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 21:49:11,292 INFO L225 Difference]: With dead ends: 20549 [2022-12-13 21:49:11,292 INFO L226 Difference]: Without dead ends: 10669 [2022-12-13 21:49:11,296 INFO L412 NwaCegarLoop]: 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 [2022-12-13 21:49:11,297 INFO L413 NwaCegarLoop]: 1083 mSDtfsCounter, 678 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 2520 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 678 SdHoareTripleChecker+Valid, 1212 SdHoareTripleChecker+Invalid, 2544 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 2520 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-12-13 21:49:11,297 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [678 Valid, 1212 Invalid, 2544 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 2520 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2022-12-13 21:49:11,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10669 states. [2022-12-13 21:49:11,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10669 to 10669. [2022-12-13 21:49:11,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10669 states, 10668 states have (on average 1.3539557555305586) internal successors, (14444), 10668 states have internal predecessors, (14444), 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) [2022-12-13 21:49:11,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10669 states to 10669 states and 14444 transitions. [2022-12-13 21:49:11,393 INFO L78 Accepts]: Start accepts. Automaton has 10669 states and 14444 transitions. Word has length 145 [2022-12-13 21:49:11,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 21:49:11,394 INFO L495 AbstractCegarLoop]: Abstraction has 10669 states and 14444 transitions. [2022-12-13 21:49:11,394 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 2 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:49:11,394 INFO L276 IsEmpty]: Start isEmpty. Operand 10669 states and 14444 transitions. [2022-12-13 21:49:11,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2022-12-13 21:49:11,395 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 21:49:11,395 INFO L195 NwaCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:49:11,396 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-13 21:49:11,396 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 21:49:11,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:49:11,396 INFO L85 PathProgramCache]: Analyzing trace with hash 1291315781, now seen corresponding path program 1 times [2022-12-13 21:49:11,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:49:11,397 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [327409091] [2022-12-13 21:49:11,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:49:11,397 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:49:11,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:49:11,495 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-12-13 21:49:11,496 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:49:11,496 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [327409091] [2022-12-13 21:49:11,496 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [327409091] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:49:11,496 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:49:11,496 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 21:49:11,496 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1429248431] [2022-12-13 21:49:11,496 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:49:11,497 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 21:49:11,497 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:49:11,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 21:49:11,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 21:49:11,498 INFO L87 Difference]: Start difference. First operand 10669 states and 14444 transitions. Second operand has 3 states, 3 states have (on average 43.0) internal successors, (129), 2 states have internal predecessors, (129), 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) [2022-12-13 21:49:14,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 21:49:14,924 INFO L93 Difference]: Finished difference Result 30031 states and 41217 transitions. [2022-12-13 21:49:14,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 21:49:14,925 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.0) internal successors, (129), 2 states have internal predecessors, (129), 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 159 [2022-12-13 21:49:14,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 21:49:14,952 INFO L225 Difference]: With dead ends: 30031 [2022-12-13 21:49:14,952 INFO L226 Difference]: Without dead ends: 20151 [2022-12-13 21:49:14,957 INFO L412 NwaCegarLoop]: 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 [2022-12-13 21:49:14,958 INFO L413 NwaCegarLoop]: 1071 mSDtfsCounter, 736 mSDsluCounter, 150 mSDsCounter, 0 mSdLazyCounter, 2527 mSolverCounterSat, 779 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 736 SdHoareTripleChecker+Valid, 1221 SdHoareTripleChecker+Invalid, 3306 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 779 IncrementalHoareTripleChecker+Valid, 2527 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2022-12-13 21:49:14,958 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [736 Valid, 1221 Invalid, 3306 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [779 Valid, 2527 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2022-12-13 21:49:14,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20151 states. [2022-12-13 21:49:15,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20151 to 19337. [2022-12-13 21:49:15,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19337 states, 19336 states have (on average 1.24244931733554) internal successors, (24024), 19336 states have internal predecessors, (24024), 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) [2022-12-13 21:49:15,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19337 states to 19337 states and 24024 transitions. [2022-12-13 21:49:15,123 INFO L78 Accepts]: Start accepts. Automaton has 19337 states and 24024 transitions. Word has length 159 [2022-12-13 21:49:15,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 21:49:15,124 INFO L495 AbstractCegarLoop]: Abstraction has 19337 states and 24024 transitions. [2022-12-13 21:49:15,124 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.0) internal successors, (129), 2 states have internal predecessors, (129), 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) [2022-12-13 21:49:15,124 INFO L276 IsEmpty]: Start isEmpty. Operand 19337 states and 24024 transitions. [2022-12-13 21:49:15,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2022-12-13 21:49:15,126 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 21:49:15,126 INFO L195 NwaCegarLoop]: 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-12-13 21:49:15,126 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-13 21:49:15,127 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 21:49:15,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:49:15,127 INFO L85 PathProgramCache]: Analyzing trace with hash -2086069409, now seen corresponding path program 1 times [2022-12-13 21:49:15,127 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:49:15,127 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [770489137] [2022-12-13 21:49:15,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:49:15,127 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:49:15,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:49:15,377 INFO L134 CoverageAnalysis]: Checked inductivity of 158 backedges. 63 proven. 0 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2022-12-13 21:49:15,378 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:49:15,378 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [770489137] [2022-12-13 21:49:15,378 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [770489137] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:49:15,378 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:49:15,378 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 21:49:15,378 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [746194130] [2022-12-13 21:49:15,378 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:49:15,379 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 21:49:15,379 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:49:15,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 21:49:15,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 21:49:15,380 INFO L87 Difference]: Start difference. First operand 19337 states and 24024 transitions. Second operand has 3 states, 3 states have (on average 50.666666666666664) internal successors, (152), 2 states have internal predecessors, (152), 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) [2022-12-13 21:49:18,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 21:49:18,662 INFO L93 Difference]: Finished difference Result 44989 states and 55628 transitions. [2022-12-13 21:49:18,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 21:49:18,663 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.666666666666664) internal successors, (152), 2 states have internal predecessors, (152), 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 246 [2022-12-13 21:49:18,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 21:49:18,698 INFO L225 Difference]: With dead ends: 44989 [2022-12-13 21:49:18,698 INFO L226 Difference]: Without dead ends: 26441 [2022-12-13 21:49:18,707 INFO L412 NwaCegarLoop]: 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 [2022-12-13 21:49:18,708 INFO L413 NwaCegarLoop]: 1029 mSDtfsCounter, 728 mSDsluCounter, 184 mSDsCounter, 0 mSdLazyCounter, 2714 mSolverCounterSat, 181 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 728 SdHoareTripleChecker+Valid, 1213 SdHoareTripleChecker+Invalid, 2895 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 181 IncrementalHoareTripleChecker+Valid, 2714 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2022-12-13 21:49:18,708 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [728 Valid, 1213 Invalid, 2895 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [181 Valid, 2714 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2022-12-13 21:49:18,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26441 states. [2022-12-13 21:49:18,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26441 to 26434. [2022-12-13 21:49:18,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26434 states, 26433 states have (on average 1.200582605076987) internal successors, (31735), 26433 states have internal predecessors, (31735), 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) [2022-12-13 21:49:18,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26434 states to 26434 states and 31735 transitions. [2022-12-13 21:49:18,979 INFO L78 Accepts]: Start accepts. Automaton has 26434 states and 31735 transitions. Word has length 246 [2022-12-13 21:49:18,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 21:49:18,980 INFO L495 AbstractCegarLoop]: Abstraction has 26434 states and 31735 transitions. [2022-12-13 21:49:18,980 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.666666666666664) internal successors, (152), 2 states have internal predecessors, (152), 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) [2022-12-13 21:49:18,980 INFO L276 IsEmpty]: Start isEmpty. Operand 26434 states and 31735 transitions. [2022-12-13 21:49:18,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2022-12-13 21:49:18,983 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 21:49:18,983 INFO L195 NwaCegarLoop]: 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-12-13 21:49:18,983 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-13 21:49:18,983 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 21:49:18,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:49:18,983 INFO L85 PathProgramCache]: Analyzing trace with hash -1890725157, now seen corresponding path program 1 times [2022-12-13 21:49:18,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:49:18,984 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [245360400] [2022-12-13 21:49:18,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:49:18,984 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:49:19,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:49:19,082 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 151 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:49:19,082 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:49:19,082 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [245360400] [2022-12-13 21:49:19,083 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [245360400] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:49:19,083 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:49:19,083 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 21:49:19,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2134822182] [2022-12-13 21:49:19,083 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:49:19,083 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 21:49:19,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:49:19,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 21:49:19,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 21:49:19,084 INFO L87 Difference]: Start difference. First operand 26434 states and 31735 transitions. Second operand has 3 states, 3 states have (on average 82.66666666666667) internal successors, (248), 3 states have internal predecessors, (248), 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) [2022-12-13 21:49:22,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 21:49:22,332 INFO L93 Difference]: Finished difference Result 72535 states and 87971 transitions. [2022-12-13 21:49:22,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 21:49:22,333 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 82.66666666666667) internal successors, (248), 3 states have internal predecessors, (248), 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 248 [2022-12-13 21:49:22,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 21:49:22,371 INFO L225 Difference]: With dead ends: 72535 [2022-12-13 21:49:22,371 INFO L226 Difference]: Without dead ends: 46103 [2022-12-13 21:49:22,383 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 21:49:22,384 INFO L413 NwaCegarLoop]: 1848 mSDtfsCounter, 841 mSDsluCounter, 136 mSDsCounter, 0 mSdLazyCounter, 2479 mSolverCounterSat, 806 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 841 SdHoareTripleChecker+Valid, 1984 SdHoareTripleChecker+Invalid, 3285 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 806 IncrementalHoareTripleChecker+Valid, 2479 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2022-12-13 21:49:22,384 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [841 Valid, 1984 Invalid, 3285 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [806 Valid, 2479 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2022-12-13 21:49:22,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46103 states. [2022-12-13 21:49:22,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46103 to 43733. [2022-12-13 21:49:22,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43733 states, 43732 states have (on average 1.1691210097868838) internal successors, (51128), 43732 states have internal predecessors, (51128), 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) [2022-12-13 21:49:22,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43733 states to 43733 states and 51128 transitions. [2022-12-13 21:49:22,735 INFO L78 Accepts]: Start accepts. Automaton has 43733 states and 51128 transitions. Word has length 248 [2022-12-13 21:49:22,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 21:49:22,736 INFO L495 AbstractCegarLoop]: Abstraction has 43733 states and 51128 transitions. [2022-12-13 21:49:22,736 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 82.66666666666667) internal successors, (248), 3 states have internal predecessors, (248), 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) [2022-12-13 21:49:22,736 INFO L276 IsEmpty]: Start isEmpty. Operand 43733 states and 51128 transitions. [2022-12-13 21:49:22,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2022-12-13 21:49:22,738 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 21:49:22,738 INFO L195 NwaCegarLoop]: 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-12-13 21:49:22,738 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-13 21:49:22,738 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 21:49:22,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:49:22,739 INFO L85 PathProgramCache]: Analyzing trace with hash -763381361, now seen corresponding path program 1 times [2022-12-13 21:49:22,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:49:22,739 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [448456165] [2022-12-13 21:49:22,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:49:22,739 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:49:22,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:49:22,857 INFO L134 CoverageAnalysis]: Checked inductivity of 158 backedges. 158 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:49:22,857 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:49:22,857 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [448456165] [2022-12-13 21:49:22,857 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [448456165] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:49:22,858 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:49:22,858 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 21:49:22,858 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [12183527] [2022-12-13 21:49:22,858 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:49:22,858 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 21:49:22,858 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:49:22,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 21:49:22,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 21:49:22,859 INFO L87 Difference]: Start difference. First operand 43733 states and 51128 transitions. Second operand has 3 states, 3 states have (on average 87.0) internal successors, (261), 3 states have internal predecessors, (261), 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) [2022-12-13 21:49:26,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 21:49:26,423 INFO L93 Difference]: Finished difference Result 106364 states and 126458 transitions. [2022-12-13 21:49:26,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 21:49:26,424 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 87.0) internal successors, (261), 3 states have internal predecessors, (261), 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 261 [2022-12-13 21:49:26,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 21:49:26,515 INFO L225 Difference]: With dead ends: 106364 [2022-12-13 21:49:26,515 INFO L226 Difference]: Without dead ends: 63420 [2022-12-13 21:49:26,527 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 21:49:26,528 INFO L413 NwaCegarLoop]: 811 mSDtfsCounter, 825 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 2385 mSolverCounterSat, 900 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 825 SdHoareTripleChecker+Valid, 928 SdHoareTripleChecker+Invalid, 3285 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 900 IncrementalHoareTripleChecker+Valid, 2385 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2022-12-13 21:49:26,528 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [825 Valid, 928 Invalid, 3285 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [900 Valid, 2385 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2022-12-13 21:49:26,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63420 states. [2022-12-13 21:49:27,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63420 to 61835. [2022-12-13 21:49:27,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61835 states, 61834 states have (on average 1.159378335543552) internal successors, (71689), 61834 states have internal predecessors, (71689), 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) [2022-12-13 21:49:27,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61835 states to 61835 states and 71689 transitions. [2022-12-13 21:49:27,224 INFO L78 Accepts]: Start accepts. Automaton has 61835 states and 71689 transitions. Word has length 261 [2022-12-13 21:49:27,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 21:49:27,224 INFO L495 AbstractCegarLoop]: Abstraction has 61835 states and 71689 transitions. [2022-12-13 21:49:27,224 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 87.0) internal successors, (261), 3 states have internal predecessors, (261), 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) [2022-12-13 21:49:27,224 INFO L276 IsEmpty]: Start isEmpty. Operand 61835 states and 71689 transitions. [2022-12-13 21:49:27,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 276 [2022-12-13 21:49:27,226 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 21:49:27,227 INFO L195 NwaCegarLoop]: 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-12-13 21:49:27,227 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-12-13 21:49:27,227 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 21:49:27,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:49:27,227 INFO L85 PathProgramCache]: Analyzing trace with hash -1249469047, now seen corresponding path program 1 times [2022-12-13 21:49:27,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:49:27,228 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2042052277] [2022-12-13 21:49:27,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:49:27,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:49:27,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:49:28,126 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 63 proven. 113 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:49:28,126 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:49:28,126 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2042052277] [2022-12-13 21:49:28,126 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2042052277] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 21:49:28,126 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [588530849] [2022-12-13 21:49:28,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:49:28,126 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 21:49:28,126 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ab7d949-290c-4831-b02b-f82bec78b842/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 21:49:28,127 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ab7d949-290c-4831-b02b-f82bec78b842/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 21:49:28,128 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ab7d949-290c-4831-b02b-f82bec78b842/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-13 21:49:28,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:49:28,220 INFO L263 TraceCheckSpWp]: Trace formula consists of 392 conjuncts, 2 conjunts are in the unsatisfiable core [2022-12-13 21:49:28,228 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:49:28,293 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 63 proven. 0 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2022-12-13 21:49:28,294 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 21:49:28,294 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [588530849] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:49:28,294 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 21:49:28,294 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 9 [2022-12-13 21:49:28,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [923614372] [2022-12-13 21:49:28,294 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:49:28,295 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 21:49:28,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:49:28,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 21:49:28,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-12-13 21:49:28,296 INFO L87 Difference]: Start difference. First operand 61835 states and 71689 transitions. Second operand has 3 states, 3 states have (on average 54.333333333333336) internal successors, (163), 3 states have internal predecessors, (163), 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) [2022-12-13 21:49:31,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 21:49:31,200 INFO L93 Difference]: Finished difference Result 122879 states and 142583 transitions. [2022-12-13 21:49:31,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 21:49:31,200 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 54.333333333333336) internal successors, (163), 3 states have internal predecessors, (163), 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 275 [2022-12-13 21:49:31,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 21:49:31,289 INFO L225 Difference]: With dead ends: 122879 [2022-12-13 21:49:31,289 INFO L226 Difference]: Without dead ends: 61833 [2022-12-13 21:49:31,305 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 281 GetRequests, 274 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-12-13 21:49:31,306 INFO L413 NwaCegarLoop]: 1357 mSDtfsCounter, 1172 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 2468 mSolverCounterSat, 445 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1172 SdHoareTripleChecker+Valid, 1438 SdHoareTripleChecker+Invalid, 2913 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 445 IncrementalHoareTripleChecker+Valid, 2468 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-12-13 21:49:31,306 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1172 Valid, 1438 Invalid, 2913 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [445 Valid, 2468 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2022-12-13 21:49:31,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61833 states. [2022-12-13 21:49:31,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61833 to 61832. [2022-12-13 21:49:31,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61832 states, 61831 states have (on average 1.1288350503792597) internal successors, (69797), 61831 states have internal predecessors, (69797), 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) [2022-12-13 21:49:31,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61832 states to 61832 states and 69797 transitions. [2022-12-13 21:49:31,971 INFO L78 Accepts]: Start accepts. Automaton has 61832 states and 69797 transitions. Word has length 275 [2022-12-13 21:49:31,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 21:49:31,971 INFO L495 AbstractCegarLoop]: Abstraction has 61832 states and 69797 transitions. [2022-12-13 21:49:31,971 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 54.333333333333336) internal successors, (163), 3 states have internal predecessors, (163), 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) [2022-12-13 21:49:31,972 INFO L276 IsEmpty]: Start isEmpty. Operand 61832 states and 69797 transitions. [2022-12-13 21:49:31,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 341 [2022-12-13 21:49:31,976 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 21:49:31,976 INFO L195 NwaCegarLoop]: 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:49:31,981 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ab7d949-290c-4831-b02b-f82bec78b842/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-13 21:49:32,176 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ab7d949-290c-4831-b02b-f82bec78b842/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 21:49:32,178 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 21:49:32,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:49:32,180 INFO L85 PathProgramCache]: Analyzing trace with hash -309568557, now seen corresponding path program 1 times [2022-12-13 21:49:32,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:49:32,181 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1443071988] [2022-12-13 21:49:32,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:49:32,183 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:49:32,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:49:33,178 INFO L134 CoverageAnalysis]: Checked inductivity of 337 backedges. 192 proven. 113 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-12-13 21:49:33,179 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:49:33,179 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1443071988] [2022-12-13 21:49:33,179 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1443071988] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 21:49:33,179 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [660789273] [2022-12-13 21:49:33,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:49:33,179 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 21:49:33,179 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ab7d949-290c-4831-b02b-f82bec78b842/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 21:49:33,180 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ab7d949-290c-4831-b02b-f82bec78b842/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 21:49:33,181 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ab7d949-290c-4831-b02b-f82bec78b842/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-13 21:49:33,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:49:33,325 INFO L263 TraceCheckSpWp]: Trace formula consists of 489 conjuncts, 2 conjunts are in the unsatisfiable core [2022-12-13 21:49:33,329 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:49:33,393 INFO L134 CoverageAnalysis]: Checked inductivity of 337 backedges. 224 proven. 0 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2022-12-13 21:49:33,394 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 21:49:33,394 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [660789273] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:49:33,394 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 21:49:33,394 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 9 [2022-12-13 21:49:33,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1138441057] [2022-12-13 21:49:33,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:49:33,395 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 21:49:33,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:49:33,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 21:49:33,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-12-13 21:49:33,396 INFO L87 Difference]: Start difference. First operand 61832 states and 69797 transitions. Second operand has 3 states, 3 states have (on average 76.0) internal successors, (228), 3 states have internal predecessors, (228), 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) [2022-12-13 21:49:36,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 21:49:36,651 INFO L93 Difference]: Finished difference Result 122864 states and 138790 transitions. [2022-12-13 21:49:36,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 21:49:36,651 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 76.0) internal successors, (228), 3 states have internal predecessors, (228), 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 340 [2022-12-13 21:49:36,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 21:49:36,715 INFO L225 Difference]: With dead ends: 122864 [2022-12-13 21:49:36,715 INFO L226 Difference]: Without dead ends: 61821 [2022-12-13 21:49:36,749 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 346 GetRequests, 339 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-12-13 21:49:36,750 INFO L413 NwaCegarLoop]: 686 mSDtfsCounter, 1071 mSDsluCounter, 132 mSDsCounter, 0 mSdLazyCounter, 2392 mSolverCounterSat, 528 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1071 SdHoareTripleChecker+Valid, 818 SdHoareTripleChecker+Invalid, 2920 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 528 IncrementalHoareTripleChecker+Valid, 2392 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-12-13 21:49:36,750 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1071 Valid, 818 Invalid, 2920 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [528 Valid, 2392 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2022-12-13 21:49:36,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61821 states. [2022-12-13 21:49:37,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61821 to 61031. [2022-12-13 21:49:37,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61031 states, 61030 states have (on average 1.094084876290349) internal successors, (66772), 61030 states have internal predecessors, (66772), 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) [2022-12-13 21:49:37,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61031 states to 61031 states and 66772 transitions. [2022-12-13 21:49:37,286 INFO L78 Accepts]: Start accepts. Automaton has 61031 states and 66772 transitions. Word has length 340 [2022-12-13 21:49:37,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 21:49:37,287 INFO L495 AbstractCegarLoop]: Abstraction has 61031 states and 66772 transitions. [2022-12-13 21:49:37,287 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 76.0) internal successors, (228), 3 states have internal predecessors, (228), 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) [2022-12-13 21:49:37,287 INFO L276 IsEmpty]: Start isEmpty. Operand 61031 states and 66772 transitions. [2022-12-13 21:49:37,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 364 [2022-12-13 21:49:37,290 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 21:49:37,290 INFO L195 NwaCegarLoop]: 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2022-12-13 21:49:37,294 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ab7d949-290c-4831-b02b-f82bec78b842/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-13 21:49:37,491 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ab7d949-290c-4831-b02b-f82bec78b842/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-12-13 21:49:37,492 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 21:49:37,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:49:37,494 INFO L85 PathProgramCache]: Analyzing trace with hash 1005452138, now seen corresponding path program 1 times [2022-12-13 21:49:37,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:49:37,495 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [264268240] [2022-12-13 21:49:37,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:49:37,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:49:37,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:49:37,787 INFO L134 CoverageAnalysis]: Checked inductivity of 572 backedges. 127 proven. 0 refuted. 0 times theorem prover too weak. 445 trivial. 0 not checked. [2022-12-13 21:49:37,788 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:49:37,788 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [264268240] [2022-12-13 21:49:37,788 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [264268240] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:49:37,788 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:49:37,788 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 21:49:37,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1732066854] [2022-12-13 21:49:37,788 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:49:37,788 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 21:49:37,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:49:37,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 21:49:37,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 21:49:37,789 INFO L87 Difference]: Start difference. First operand 61031 states and 66772 transitions. Second operand has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 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) [2022-12-13 21:49:41,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 21:49:41,969 INFO L93 Difference]: Finished difference Result 127683 states and 140599 transitions. [2022-12-13 21:49:41,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 21:49:41,970 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 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 363 [2022-12-13 21:49:41,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 21:49:42,035 INFO L225 Difference]: With dead ends: 127683 [2022-12-13 21:49:42,035 INFO L226 Difference]: Without dead ends: 77684 [2022-12-13 21:49:42,058 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 21:49:42,059 INFO L413 NwaCegarLoop]: 635 mSDtfsCounter, 988 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 3008 mSolverCounterSat, 711 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 988 SdHoareTripleChecker+Valid, 718 SdHoareTripleChecker+Invalid, 3719 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 711 IncrementalHoareTripleChecker+Valid, 3008 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2022-12-13 21:49:42,059 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [988 Valid, 718 Invalid, 3719 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [711 Valid, 3008 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2022-12-13 21:49:42,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77684 states. [2022-12-13 21:49:42,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77684 to 61030. [2022-12-13 21:49:42,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61030 states, 61029 states have (on average 1.0940864179324583) internal successors, (66771), 61029 states have internal predecessors, (66771), 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) [2022-12-13 21:49:42,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61030 states to 61030 states and 66771 transitions. [2022-12-13 21:49:42,620 INFO L78 Accepts]: Start accepts. Automaton has 61030 states and 66771 transitions. Word has length 363 [2022-12-13 21:49:42,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 21:49:42,620 INFO L495 AbstractCegarLoop]: Abstraction has 61030 states and 66771 transitions. [2022-12-13 21:49:42,620 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 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) [2022-12-13 21:49:42,621 INFO L276 IsEmpty]: Start isEmpty. Operand 61030 states and 66771 transitions. [2022-12-13 21:49:42,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 391 [2022-12-13 21:49:42,690 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 21:49:42,691 INFO L195 NwaCegarLoop]: 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:49:42,691 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-12-13 21:49:42,691 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 21:49:42,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:49:42,692 INFO L85 PathProgramCache]: Analyzing trace with hash 421332255, now seen corresponding path program 1 times [2022-12-13 21:49:42,692 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:49:42,692 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1797339574] [2022-12-13 21:49:42,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:49:42,693 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:49:42,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:49:42,931 INFO L134 CoverageAnalysis]: Checked inductivity of 617 backedges. 456 proven. 0 refuted. 0 times theorem prover too weak. 161 trivial. 0 not checked. [2022-12-13 21:49:42,932 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:49:42,932 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1797339574] [2022-12-13 21:49:42,932 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1797339574] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:49:42,932 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:49:42,932 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 21:49:42,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [511495253] [2022-12-13 21:49:42,932 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:49:42,933 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 21:49:42,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:49:42,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 21:49:42,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 21:49:42,934 INFO L87 Difference]: Start difference. First operand 61030 states and 66771 transitions. Second operand has 3 states, 3 states have (on average 77.0) internal successors, (231), 3 states have internal predecessors, (231), 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) [2022-12-13 21:49:46,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 21:49:46,387 INFO L93 Difference]: Finished difference Result 141745 states and 156245 transitions. [2022-12-13 21:49:46,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 21:49:46,387 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 77.0) internal successors, (231), 3 states have internal predecessors, (231), 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 390 [2022-12-13 21:49:46,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 21:49:46,454 INFO L225 Difference]: With dead ends: 141745 [2022-12-13 21:49:46,454 INFO L226 Difference]: Without dead ends: 81504 [2022-12-13 21:49:46,479 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 21:49:46,479 INFO L413 NwaCegarLoop]: 709 mSDtfsCounter, 914 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 2390 mSolverCounterSat, 978 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 914 SdHoareTripleChecker+Valid, 791 SdHoareTripleChecker+Invalid, 3368 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 978 IncrementalHoareTripleChecker+Valid, 2390 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2022-12-13 21:49:46,480 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [914 Valid, 791 Invalid, 3368 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [978 Valid, 2390 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2022-12-13 21:49:46,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81504 states. [2022-12-13 21:49:47,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81504 to 79912. [2022-12-13 21:49:47,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79912 states, 79911 states have (on average 1.097208144060267) internal successors, (87679), 79911 states have internal predecessors, (87679), 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) [2022-12-13 21:49:47,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79912 states to 79912 states and 87679 transitions. [2022-12-13 21:49:47,148 INFO L78 Accepts]: Start accepts. Automaton has 79912 states and 87679 transitions. Word has length 390 [2022-12-13 21:49:47,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 21:49:47,149 INFO L495 AbstractCegarLoop]: Abstraction has 79912 states and 87679 transitions. [2022-12-13 21:49:47,149 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 77.0) internal successors, (231), 3 states have internal predecessors, (231), 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) [2022-12-13 21:49:47,149 INFO L276 IsEmpty]: Start isEmpty. Operand 79912 states and 87679 transitions. [2022-12-13 21:49:47,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 424 [2022-12-13 21:49:47,154 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 21:49:47,154 INFO L195 NwaCegarLoop]: 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:49:47,154 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-12-13 21:49:47,154 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 21:49:47,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:49:47,155 INFO L85 PathProgramCache]: Analyzing trace with hash 1432798242, now seen corresponding path program 1 times [2022-12-13 21:49:47,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:49:47,155 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [933400875] [2022-12-13 21:49:47,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:49:47,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:49:47,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:49:47,397 INFO L134 CoverageAnalysis]: Checked inductivity of 414 backedges. 95 proven. 0 refuted. 0 times theorem prover too weak. 319 trivial. 0 not checked. [2022-12-13 21:49:47,397 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:49:47,397 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [933400875] [2022-12-13 21:49:47,398 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [933400875] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:49:47,398 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:49:47,398 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 21:49:47,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1147986838] [2022-12-13 21:49:47,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:49:47,399 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 21:49:47,399 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:49:47,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 21:49:47,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 21:49:47,399 INFO L87 Difference]: Start difference. First operand 79912 states and 87679 transitions. Second operand has 3 states, 3 states have (on average 67.66666666666667) internal successors, (203), 3 states have internal predecessors, (203), 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) [2022-12-13 21:49:50,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 21:49:50,474 INFO L93 Difference]: Finished difference Result 160614 states and 176158 transitions. [2022-12-13 21:49:50,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 21:49:50,475 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 67.66666666666667) internal successors, (203), 3 states have internal predecessors, (203), 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 423 [2022-12-13 21:49:50,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 21:49:50,544 INFO L225 Difference]: With dead ends: 160614 [2022-12-13 21:49:50,545 INFO L226 Difference]: Without dead ends: 81491 [2022-12-13 21:49:50,564 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 21:49:50,565 INFO L413 NwaCegarLoop]: 1419 mSDtfsCounter, 1005 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 2496 mSolverCounterSat, 587 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1005 SdHoareTripleChecker+Valid, 1505 SdHoareTripleChecker+Invalid, 3083 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 587 IncrementalHoareTripleChecker+Valid, 2496 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-12-13 21:49:50,565 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1005 Valid, 1505 Invalid, 3083 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [587 Valid, 2496 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2022-12-13 21:49:50,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81491 states. [2022-12-13 21:49:51,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81491 to 79905. [2022-12-13 21:49:51,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79905 states, 79904 states have (on average 1.0707849419303164) internal successors, (85560), 79904 states have internal predecessors, (85560), 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) [2022-12-13 21:49:51,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79905 states to 79905 states and 85560 transitions. [2022-12-13 21:49:51,480 INFO L78 Accepts]: Start accepts. Automaton has 79905 states and 85560 transitions. Word has length 423 [2022-12-13 21:49:51,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 21:49:51,480 INFO L495 AbstractCegarLoop]: Abstraction has 79905 states and 85560 transitions. [2022-12-13 21:49:51,481 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 67.66666666666667) internal successors, (203), 3 states have internal predecessors, (203), 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) [2022-12-13 21:49:51,481 INFO L276 IsEmpty]: Start isEmpty. Operand 79905 states and 85560 transitions. [2022-12-13 21:49:51,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 556 [2022-12-13 21:49:51,498 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 21:49:51,498 INFO L195 NwaCegarLoop]: 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, 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, 3, 3, 3, 3, 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] [2022-12-13 21:49:51,498 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-12-13 21:49:51,498 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 21:49:51,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:49:51,499 INFO L85 PathProgramCache]: Analyzing trace with hash 142937848, now seen corresponding path program 1 times [2022-12-13 21:49:51,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:49:51,499 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1640929536] [2022-12-13 21:49:51,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:49:51,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:49:51,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:49:51,907 INFO L134 CoverageAnalysis]: Checked inductivity of 1076 backedges. 714 proven. 0 refuted. 0 times theorem prover too weak. 362 trivial. 0 not checked. [2022-12-13 21:49:51,907 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:49:51,907 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1640929536] [2022-12-13 21:49:51,908 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1640929536] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:49:51,908 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:49:51,908 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 21:49:51,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1188858426] [2022-12-13 21:49:51,908 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:49:51,909 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 21:49:51,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:49:51,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 21:49:51,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-13 21:49:51,910 INFO L87 Difference]: Start difference. First operand 79905 states and 85560 transitions. Second operand has 4 states, 4 states have (on average 85.75) internal successors, (343), 3 states have internal predecessors, (343), 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) [2022-12-13 21:49:59,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 21:49:59,139 INFO L93 Difference]: Finished difference Result 227753 states and 244796 transitions. [2022-12-13 21:49:59,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 21:49:59,139 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 85.75) internal successors, (343), 3 states have internal predecessors, (343), 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 555 [2022-12-13 21:49:59,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 21:49:59,269 INFO L225 Difference]: With dead ends: 227753 [2022-12-13 21:49:59,269 INFO L226 Difference]: Without dead ends: 148637 [2022-12-13 21:49:59,310 INFO L412 NwaCegarLoop]: 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 [2022-12-13 21:49:59,311 INFO L413 NwaCegarLoop]: 574 mSDtfsCounter, 1705 mSDsluCounter, 182 mSDsCounter, 0 mSdLazyCounter, 5978 mSolverCounterSat, 1084 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1705 SdHoareTripleChecker+Valid, 756 SdHoareTripleChecker+Invalid, 7062 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1084 IncrementalHoareTripleChecker+Valid, 5978 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.6s IncrementalHoareTripleChecker+Time [2022-12-13 21:49:59,311 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1705 Valid, 756 Invalid, 7062 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1084 Valid, 5978 Invalid, 0 Unknown, 0 Unchecked, 6.6s Time] [2022-12-13 21:49:59,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148637 states. [2022-12-13 21:50:00,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148637 to 120109. [2022-12-13 21:50:00,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120109 states, 120108 states have (on average 1.069246011922603) internal successors, (128425), 120108 states have internal predecessors, (128425), 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) [2022-12-13 21:50:00,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120109 states to 120109 states and 128425 transitions. [2022-12-13 21:50:00,616 INFO L78 Accepts]: Start accepts. Automaton has 120109 states and 128425 transitions. Word has length 555 [2022-12-13 21:50:00,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 21:50:00,617 INFO L495 AbstractCegarLoop]: Abstraction has 120109 states and 128425 transitions. [2022-12-13 21:50:00,617 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 85.75) internal successors, (343), 3 states have internal predecessors, (343), 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) [2022-12-13 21:50:00,617 INFO L276 IsEmpty]: Start isEmpty. Operand 120109 states and 128425 transitions. [2022-12-13 21:50:00,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 569 [2022-12-13 21:50:00,636 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 21:50:00,636 INFO L195 NwaCegarLoop]: 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, 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, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:50:00,637 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-12-13 21:50:00,637 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 21:50:00,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:50:00,637 INFO L85 PathProgramCache]: Analyzing trace with hash -1639587280, now seen corresponding path program 1 times [2022-12-13 21:50:00,637 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:50:00,637 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [888830567] [2022-12-13 21:50:00,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:50:00,638 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:50:00,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:50:01,016 INFO L134 CoverageAnalysis]: Checked inductivity of 1051 backedges. 747 proven. 0 refuted. 0 times theorem prover too weak. 304 trivial. 0 not checked. [2022-12-13 21:50:01,016 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:50:01,016 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [888830567] [2022-12-13 21:50:01,016 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [888830567] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:50:01,016 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:50:01,017 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 21:50:01,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1779124500] [2022-12-13 21:50:01,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:50:01,018 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 21:50:01,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:50:01,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 21:50:01,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 21:50:01,019 INFO L87 Difference]: Start difference. First operand 120109 states and 128425 transitions. Second operand has 3 states, 3 states have (on average 118.33333333333333) internal successors, (355), 3 states have internal predecessors, (355), 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) [2022-12-13 21:50:04,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 21:50:04,462 INFO L93 Difference]: Finished difference Result 270927 states and 290662 transitions. [2022-12-13 21:50:04,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 21:50:04,462 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 118.33333333333333) internal successors, (355), 3 states have internal predecessors, (355), 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 568 [2022-12-13 21:50:04,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 21:50:04,600 INFO L225 Difference]: With dead ends: 270927 [2022-12-13 21:50:04,601 INFO L226 Difference]: Without dead ends: 149246 [2022-12-13 21:50:04,649 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 21:50:04,650 INFO L413 NwaCegarLoop]: 1740 mSDtfsCounter, 783 mSDsluCounter, 143 mSDsCounter, 0 mSdLazyCounter, 2523 mSolverCounterSat, 462 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 783 SdHoareTripleChecker+Valid, 1883 SdHoareTripleChecker+Invalid, 2985 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 462 IncrementalHoareTripleChecker+Valid, 2523 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-12-13 21:50:04,650 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [783 Valid, 1883 Invalid, 2985 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [462 Valid, 2523 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2022-12-13 21:50:04,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149246 states. [2022-12-13 21:50:05,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149246 to 149226. [2022-12-13 21:50:05,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 149226 states, 149225 states have (on average 1.061424024124644) internal successors, (158391), 149225 states have internal predecessors, (158391), 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) [2022-12-13 21:50:06,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149226 states to 149226 states and 158391 transitions. [2022-12-13 21:50:06,073 INFO L78 Accepts]: Start accepts. Automaton has 149226 states and 158391 transitions. Word has length 568 [2022-12-13 21:50:06,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 21:50:06,074 INFO L495 AbstractCegarLoop]: Abstraction has 149226 states and 158391 transitions. [2022-12-13 21:50:06,074 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 118.33333333333333) internal successors, (355), 3 states have internal predecessors, (355), 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) [2022-12-13 21:50:06,074 INFO L276 IsEmpty]: Start isEmpty. Operand 149226 states and 158391 transitions. [2022-12-13 21:50:06,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 578 [2022-12-13 21:50:06,088 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 21:50:06,088 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 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, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:50:06,089 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-12-13 21:50:06,089 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 21:50:06,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:50:06,089 INFO L85 PathProgramCache]: Analyzing trace with hash 1688698911, now seen corresponding path program 1 times [2022-12-13 21:50:06,089 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:50:06,089 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1631714994] [2022-12-13 21:50:06,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:50:06,089 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:50:06,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:50:06,485 INFO L134 CoverageAnalysis]: Checked inductivity of 1318 backedges. 944 proven. 0 refuted. 0 times theorem prover too weak. 374 trivial. 0 not checked. [2022-12-13 21:50:06,486 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:50:06,486 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1631714994] [2022-12-13 21:50:06,486 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1631714994] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:50:06,486 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:50:06,486 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 21:50:06,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [492631791] [2022-12-13 21:50:06,487 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:50:06,487 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 21:50:06,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:50:06,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 21:50:06,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 21:50:06,488 INFO L87 Difference]: Start difference. First operand 149226 states and 158391 transitions. Second operand has 3 states, 3 states have (on average 103.66666666666667) internal successors, (311), 3 states have internal predecessors, (311), 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) [2022-12-13 21:50:11,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 21:50:11,088 INFO L93 Difference]: Finished difference Result 337042 states and 359691 transitions. [2022-12-13 21:50:11,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 21:50:11,089 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 103.66666666666667) internal successors, (311), 3 states have internal predecessors, (311), 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 577 [2022-12-13 21:50:11,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 21:50:11,292 INFO L225 Difference]: With dead ends: 337042 [2022-12-13 21:50:11,293 INFO L226 Difference]: Without dead ends: 206713 [2022-12-13 21:50:11,335 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 21:50:11,336 INFO L413 NwaCegarLoop]: 551 mSDtfsCounter, 1022 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 2459 mSolverCounterSat, 984 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1022 SdHoareTripleChecker+Valid, 632 SdHoareTripleChecker+Invalid, 3443 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 984 IncrementalHoareTripleChecker+Valid, 2459 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2022-12-13 21:50:11,336 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1022 Valid, 632 Invalid, 3443 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [984 Valid, 2459 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2022-12-13 21:50:11,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206713 states. [2022-12-13 21:50:12,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206713 to 206706. [2022-12-13 21:50:13,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 206706 states, 206705 states have (on average 1.0615321351684768) internal successors, (219424), 206705 states have internal predecessors, (219424), 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) [2022-12-13 21:50:13,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206706 states to 206706 states and 219424 transitions. [2022-12-13 21:50:13,394 INFO L78 Accepts]: Start accepts. Automaton has 206706 states and 219424 transitions. Word has length 577 [2022-12-13 21:50:13,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 21:50:13,394 INFO L495 AbstractCegarLoop]: Abstraction has 206706 states and 219424 transitions. [2022-12-13 21:50:13,395 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 103.66666666666667) internal successors, (311), 3 states have internal predecessors, (311), 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) [2022-12-13 21:50:13,395 INFO L276 IsEmpty]: Start isEmpty. Operand 206706 states and 219424 transitions. [2022-12-13 21:50:13,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 618 [2022-12-13 21:50:13,411 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 21:50:13,411 INFO L195 NwaCegarLoop]: 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:50:13,411 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-12-13 21:50:13,411 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 21:50:13,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:50:13,412 INFO L85 PathProgramCache]: Analyzing trace with hash -1668119914, now seen corresponding path program 1 times [2022-12-13 21:50:13,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:50:13,412 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [422006516] [2022-12-13 21:50:13,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:50:13,412 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:50:13,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:50:15,126 INFO L134 CoverageAnalysis]: Checked inductivity of 446 backedges. 301 proven. 113 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-12-13 21:50:15,126 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:50:15,126 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [422006516] [2022-12-13 21:50:15,126 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [422006516] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 21:50:15,126 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [459912462] [2022-12-13 21:50:15,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:50:15,126 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 21:50:15,127 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ab7d949-290c-4831-b02b-f82bec78b842/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 21:50:15,127 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ab7d949-290c-4831-b02b-f82bec78b842/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 21:50:15,128 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ab7d949-290c-4831-b02b-f82bec78b842/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-13 21:50:15,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:50:15,282 INFO L263 TraceCheckSpWp]: Trace formula consists of 771 conjuncts, 2 conjunts are in the unsatisfiable core [2022-12-13 21:50:15,288 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:50:15,546 INFO L134 CoverageAnalysis]: Checked inductivity of 446 backedges. 333 proven. 0 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2022-12-13 21:50:15,547 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 21:50:15,547 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [459912462] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:50:15,547 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 21:50:15,547 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 9 [2022-12-13 21:50:15,547 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2060260089] [2022-12-13 21:50:15,547 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:50:15,547 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 21:50:15,548 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:50:15,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 21:50:15,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2022-12-13 21:50:15,548 INFO L87 Difference]: Start difference. First operand 206706 states and 219424 transitions. Second operand has 3 states, 3 states have (on average 168.33333333333334) internal successors, (505), 3 states have internal predecessors, (505), 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) [2022-12-13 21:50:19,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 21:50:19,742 INFO L93 Difference]: Finished difference Result 395249 states and 420449 transitions. [2022-12-13 21:50:19,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 21:50:19,743 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 168.33333333333334) internal successors, (505), 3 states have internal predecessors, (505), 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 617 [2022-12-13 21:50:19,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 21:50:19,971 INFO L225 Difference]: With dead ends: 395249 [2022-12-13 21:50:19,971 INFO L226 Difference]: Without dead ends: 207440 [2022-12-13 21:50:20,038 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 623 GetRequests, 616 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2022-12-13 21:50:20,039 INFO L413 NwaCegarLoop]: 351 mSDtfsCounter, 976 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 2253 mSolverCounterSat, 756 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 976 SdHoareTripleChecker+Valid, 363 SdHoareTripleChecker+Invalid, 3009 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 756 IncrementalHoareTripleChecker+Valid, 2253 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2022-12-13 21:50:20,039 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [976 Valid, 363 Invalid, 3009 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [756 Valid, 2253 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2022-12-13 21:50:20,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207440 states. [2022-12-13 21:50:21,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207440 to 207440. [2022-12-13 21:50:21,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 207440 states, 207439 states have (on average 1.054469024628927) internal successors, (218738), 207439 states have internal predecessors, (218738), 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) [2022-12-13 21:50:22,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207440 states to 207440 states and 218738 transitions. [2022-12-13 21:50:22,150 INFO L78 Accepts]: Start accepts. Automaton has 207440 states and 218738 transitions. Word has length 617 [2022-12-13 21:50:22,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 21:50:22,151 INFO L495 AbstractCegarLoop]: Abstraction has 207440 states and 218738 transitions. [2022-12-13 21:50:22,151 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 168.33333333333334) internal successors, (505), 3 states have internal predecessors, (505), 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) [2022-12-13 21:50:22,151 INFO L276 IsEmpty]: Start isEmpty. Operand 207440 states and 218738 transitions. [2022-12-13 21:50:22,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 640 [2022-12-13 21:50:22,165 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 21:50:22,165 INFO L195 NwaCegarLoop]: 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2022-12-13 21:50:22,171 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ab7d949-290c-4831-b02b-f82bec78b842/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-12-13 21:50:22,366 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ab7d949-290c-4831-b02b-f82bec78b842/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-12-13 21:50:22,367 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 21:50:22,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:50:22,369 INFO L85 PathProgramCache]: Analyzing trace with hash 137025541, now seen corresponding path program 1 times [2022-12-13 21:50:22,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:50:22,369 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [229557468] [2022-12-13 21:50:22,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:50:22,370 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:50:22,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:50:22,770 INFO L134 CoverageAnalysis]: Checked inductivity of 746 backedges. 590 proven. 0 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2022-12-13 21:50:22,770 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:50:22,770 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [229557468] [2022-12-13 21:50:22,770 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [229557468] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:50:22,770 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:50:22,770 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 21:50:22,770 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1882370824] [2022-12-13 21:50:22,771 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:50:22,771 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 21:50:22,772 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:50:22,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 21:50:22,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 21:50:22,773 INFO L87 Difference]: Start difference. First operand 207440 states and 218738 transitions. Second operand has 3 states, 3 states have (on average 161.66666666666666) internal successors, (485), 3 states have internal predecessors, (485), 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) [2022-12-13 21:50:27,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 21:50:27,373 INFO L93 Difference]: Finished difference Result 409363 states and 431636 transitions. [2022-12-13 21:50:27,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 21:50:27,374 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 161.66666666666666) internal successors, (485), 3 states have internal predecessors, (485), 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 639 [2022-12-13 21:50:27,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 21:50:27,585 INFO L225 Difference]: With dead ends: 409363 [2022-12-13 21:50:27,585 INFO L226 Difference]: Without dead ends: 202712 [2022-12-13 21:50:27,650 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 21:50:27,651 INFO L413 NwaCegarLoop]: 1664 mSDtfsCounter, 791 mSDsluCounter, 133 mSDsCounter, 0 mSdLazyCounter, 2440 mSolverCounterSat, 399 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 791 SdHoareTripleChecker+Valid, 1797 SdHoareTripleChecker+Invalid, 2839 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 399 IncrementalHoareTripleChecker+Valid, 2440 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2022-12-13 21:50:27,651 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [791 Valid, 1797 Invalid, 2839 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [399 Valid, 2440 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2022-12-13 21:50:27,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202712 states. [2022-12-13 21:50:29,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202712 to 200344. [2022-12-13 21:50:29,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 200344 states, 200343 states have (on average 1.0450377602411864) internal successors, (209366), 200343 states have internal predecessors, (209366), 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) [2022-12-13 21:50:29,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200344 states to 200344 states and 209366 transitions. [2022-12-13 21:50:29,590 INFO L78 Accepts]: Start accepts. Automaton has 200344 states and 209366 transitions. Word has length 639 [2022-12-13 21:50:29,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 21:50:29,590 INFO L495 AbstractCegarLoop]: Abstraction has 200344 states and 209366 transitions. [2022-12-13 21:50:29,590 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 161.66666666666666) internal successors, (485), 3 states have internal predecessors, (485), 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) [2022-12-13 21:50:29,590 INFO L276 IsEmpty]: Start isEmpty. Operand 200344 states and 209366 transitions. [2022-12-13 21:50:29,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 654 [2022-12-13 21:50:29,606 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 21:50:29,606 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 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, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:50:29,606 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-12-13 21:50:29,606 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 21:50:29,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:50:29,607 INFO L85 PathProgramCache]: Analyzing trace with hash -518118734, now seen corresponding path program 1 times [2022-12-13 21:50:29,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:50:29,607 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2136450749] [2022-12-13 21:50:29,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:50:29,607 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:50:29,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:50:30,694 INFO L134 CoverageAnalysis]: Checked inductivity of 1475 backedges. 775 proven. 110 refuted. 0 times theorem prover too weak. 590 trivial. 0 not checked. [2022-12-13 21:50:30,694 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:50:30,694 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2136450749] [2022-12-13 21:50:30,695 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2136450749] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 21:50:30,695 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1496008542] [2022-12-13 21:50:30,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:50:30,695 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 21:50:30,695 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ab7d949-290c-4831-b02b-f82bec78b842/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 21:50:30,696 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ab7d949-290c-4831-b02b-f82bec78b842/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 21:50:30,697 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ab7d949-290c-4831-b02b-f82bec78b842/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-13 21:50:30,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:50:30,972 INFO L263 TraceCheckSpWp]: Trace formula consists of 887 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-13 21:50:30,986 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:50:31,045 INFO L134 CoverageAnalysis]: Checked inductivity of 1475 backedges. 772 proven. 0 refuted. 0 times theorem prover too weak. 703 trivial. 0 not checked. [2022-12-13 21:50:31,045 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 21:50:31,046 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1496008542] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:50:31,046 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 21:50:31,046 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 8 [2022-12-13 21:50:31,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [579502414] [2022-12-13 21:50:31,046 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:50:31,047 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 21:50:31,047 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:50:31,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 21:50:31,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-12-13 21:50:31,047 INFO L87 Difference]: Start difference. First operand 200344 states and 209366 transitions. Second operand has 3 states, 3 states have (on average 92.0) internal successors, (276), 3 states have internal predecessors, (276), 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) [2022-12-13 21:50:35,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 21:50:35,984 INFO L93 Difference]: Finished difference Result 428212 states and 447958 transitions. [2022-12-13 21:50:35,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 21:50:35,984 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 92.0) internal successors, (276), 3 states have internal predecessors, (276), 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 653 [2022-12-13 21:50:35,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 21:50:36,324 INFO L225 Difference]: With dead ends: 428212 [2022-12-13 21:50:36,325 INFO L226 Difference]: Without dead ends: 241253 [2022-12-13 21:50:36,356 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 658 GetRequests, 652 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-12-13 21:50:36,356 INFO L413 NwaCegarLoop]: 1546 mSDtfsCounter, 923 mSDsluCounter, 109 mSDsCounter, 0 mSdLazyCounter, 2484 mSolverCounterSat, 707 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 923 SdHoareTripleChecker+Valid, 1655 SdHoareTripleChecker+Invalid, 3191 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 707 IncrementalHoareTripleChecker+Valid, 2484 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2022-12-13 21:50:36,356 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [923 Valid, 1655 Invalid, 3191 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [707 Valid, 2484 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2022-12-13 21:50:36,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241253 states. [2022-12-13 21:50:38,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241253 to 216850. [2022-12-13 21:50:38,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 216850 states, 216849 states have (on average 1.0407103560542128) internal successors, (225677), 216849 states have internal predecessors, (225677), 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) [2022-12-13 21:50:38,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216850 states to 216850 states and 225677 transitions. [2022-12-13 21:50:38,597 INFO L78 Accepts]: Start accepts. Automaton has 216850 states and 225677 transitions. Word has length 653 [2022-12-13 21:50:38,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 21:50:38,597 INFO L495 AbstractCegarLoop]: Abstraction has 216850 states and 225677 transitions. [2022-12-13 21:50:38,597 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 92.0) internal successors, (276), 3 states have internal predecessors, (276), 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) [2022-12-13 21:50:38,597 INFO L276 IsEmpty]: Start isEmpty. Operand 216850 states and 225677 transitions. [2022-12-13 21:50:38,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 659 [2022-12-13 21:50:38,610 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 21:50:38,611 INFO L195 NwaCegarLoop]: 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, 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, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:50:38,615 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ab7d949-290c-4831-b02b-f82bec78b842/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-12-13 21:50:38,811 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ab7d949-290c-4831-b02b-f82bec78b842/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 21:50:38,813 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 21:50:38,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:50:38,814 INFO L85 PathProgramCache]: Analyzing trace with hash -1457106143, now seen corresponding path program 1 times [2022-12-13 21:50:38,814 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:50:38,814 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [320759395] [2022-12-13 21:50:38,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:50:38,815 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:50:38,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:50:40,551 INFO L134 CoverageAnalysis]: Checked inductivity of 1196 backedges. 692 proven. 113 refuted. 0 times theorem prover too weak. 391 trivial. 0 not checked. [2022-12-13 21:50:40,551 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:50:40,551 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [320759395] [2022-12-13 21:50:40,551 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [320759395] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 21:50:40,552 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [898944121] [2022-12-13 21:50:40,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:50:40,552 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 21:50:40,552 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ab7d949-290c-4831-b02b-f82bec78b842/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 21:50:40,553 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ab7d949-290c-4831-b02b-f82bec78b842/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 21:50:40,553 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ab7d949-290c-4831-b02b-f82bec78b842/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-13 21:50:40,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:50:40,739 INFO L263 TraceCheckSpWp]: Trace formula consists of 861 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-13 21:50:40,745 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:50:41,220 INFO L134 CoverageAnalysis]: Checked inductivity of 1196 backedges. 692 proven. 0 refuted. 0 times theorem prover too weak. 504 trivial. 0 not checked. [2022-12-13 21:50:41,220 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 21:50:41,220 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [898944121] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:50:41,220 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 21:50:41,220 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [7] total 8 [2022-12-13 21:50:41,220 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [171547143] [2022-12-13 21:50:41,221 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:50:41,221 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 21:50:41,221 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:50:41,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 21:50:41,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2022-12-13 21:50:41,221 INFO L87 Difference]: Start difference. First operand 216850 states and 225677 transitions. Second operand has 3 states, 3 states have (on average 99.66666666666667) internal successors, (299), 2 states have internal predecessors, (299), 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) [2022-12-13 21:50:45,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 21:50:45,180 INFO L93 Difference]: Finished difference Result 422693 states and 440255 transitions. [2022-12-13 21:50:45,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 21:50:45,181 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 99.66666666666667) internal successors, (299), 2 states have internal predecessors, (299), 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 658 [2022-12-13 21:50:45,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 21:50:45,497 INFO L225 Difference]: With dead ends: 422693 [2022-12-13 21:50:45,497 INFO L226 Difference]: Without dead ends: 220800 [2022-12-13 21:50:45,559 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 664 GetRequests, 657 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2022-12-13 21:50:45,560 INFO L413 NwaCegarLoop]: 989 mSDtfsCounter, 680 mSDsluCounter, 128 mSDsCounter, 0 mSdLazyCounter, 2426 mSolverCounterSat, 106 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 680 SdHoareTripleChecker+Valid, 1117 SdHoareTripleChecker+Invalid, 2532 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 106 IncrementalHoareTripleChecker+Valid, 2426 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2022-12-13 21:50:45,560 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [680 Valid, 1117 Invalid, 2532 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [106 Valid, 2426 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2022-12-13 21:50:45,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220800 states. [2022-12-13 21:50:47,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220800 to 220787. [2022-12-13 21:50:47,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 220787 states, 220786 states have (on average 1.03699509932695) internal successors, (228954), 220786 states have internal predecessors, (228954), 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) [2022-12-13 21:50:47,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220787 states to 220787 states and 228954 transitions. [2022-12-13 21:50:47,938 INFO L78 Accepts]: Start accepts. Automaton has 220787 states and 228954 transitions. Word has length 658 [2022-12-13 21:50:47,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 21:50:47,938 INFO L495 AbstractCegarLoop]: Abstraction has 220787 states and 228954 transitions. [2022-12-13 21:50:47,939 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 99.66666666666667) internal successors, (299), 2 states have internal predecessors, (299), 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) [2022-12-13 21:50:47,939 INFO L276 IsEmpty]: Start isEmpty. Operand 220787 states and 228954 transitions. [2022-12-13 21:50:47,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 678 [2022-12-13 21:50:47,958 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 21:50:47,959 INFO L195 NwaCegarLoop]: 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-12-13 21:50:47,963 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ab7d949-290c-4831-b02b-f82bec78b842/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-12-13 21:50:48,159 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ab7d949-290c-4831-b02b-f82bec78b842/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2022-12-13 21:50:48,161 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 21:50:48,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:50:48,163 INFO L85 PathProgramCache]: Analyzing trace with hash -1629289120, now seen corresponding path program 1 times [2022-12-13 21:50:48,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:50:48,164 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1624139024] [2022-12-13 21:50:48,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:50:48,165 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:50:48,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:50:48,939 INFO L134 CoverageAnalysis]: Checked inductivity of 712 backedges. 63 proven. 64 refuted. 0 times theorem prover too weak. 585 trivial. 0 not checked. [2022-12-13 21:50:48,940 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:50:48,940 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1624139024] [2022-12-13 21:50:48,940 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1624139024] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 21:50:48,940 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1733865193] [2022-12-13 21:50:48,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:50:48,940 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 21:50:48,940 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ab7d949-290c-4831-b02b-f82bec78b842/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 21:50:48,941 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ab7d949-290c-4831-b02b-f82bec78b842/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 21:50:48,941 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ab7d949-290c-4831-b02b-f82bec78b842/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-12-13 21:50:49,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:50:49,123 INFO L263 TraceCheckSpWp]: Trace formula consists of 860 conjuncts, 2 conjunts are in the unsatisfiable core [2022-12-13 21:50:49,128 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:50:49,168 INFO L134 CoverageAnalysis]: Checked inductivity of 712 backedges. 127 proven. 0 refuted. 0 times theorem prover too weak. 585 trivial. 0 not checked. [2022-12-13 21:50:49,168 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 21:50:49,168 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1733865193] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:50:49,168 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 21:50:49,169 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2022-12-13 21:50:49,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [712268551] [2022-12-13 21:50:49,169 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:50:49,170 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 21:50:49,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:50:49,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 21:50:49,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-12-13 21:50:49,171 INFO L87 Difference]: Start difference. First operand 220787 states and 228954 transitions. Second operand has 3 states, 3 states have (on average 122.33333333333333) internal successors, (367), 3 states have internal predecessors, (367), 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) [2022-12-13 21:50:53,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 21:50:53,207 INFO L93 Difference]: Finished difference Result 452581 states and 470125 transitions. [2022-12-13 21:50:53,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 21:50:53,208 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 122.33333333333333) internal successors, (367), 3 states have internal predecessors, (367), 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 677 [2022-12-13 21:50:53,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 21:50:53,542 INFO L225 Difference]: With dead ends: 452581 [2022-12-13 21:50:53,542 INFO L226 Difference]: Without dead ends: 248330 [2022-12-13 21:50:53,598 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 680 GetRequests, 676 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-12-13 21:50:53,598 INFO L413 NwaCegarLoop]: 400 mSDtfsCounter, 964 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 2451 mSolverCounterSat, 658 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 964 SdHoareTripleChecker+Valid, 492 SdHoareTripleChecker+Invalid, 3109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 658 IncrementalHoareTripleChecker+Valid, 2451 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2022-12-13 21:50:53,598 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [964 Valid, 492 Invalid, 3109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [658 Valid, 2451 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2022-12-13 21:50:53,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248330 states. [2022-12-13 21:50:55,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248330 to 236523. [2022-12-13 21:50:55,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 236523 states, 236522 states have (on average 1.0345972044883773) internal successors, (244705), 236522 states have internal predecessors, (244705), 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) [2022-12-13 21:50:56,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236523 states to 236523 states and 244705 transitions. [2022-12-13 21:50:56,062 INFO L78 Accepts]: Start accepts. Automaton has 236523 states and 244705 transitions. Word has length 677 [2022-12-13 21:50:56,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 21:50:56,063 INFO L495 AbstractCegarLoop]: Abstraction has 236523 states and 244705 transitions. [2022-12-13 21:50:56,063 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 122.33333333333333) internal successors, (367), 3 states have internal predecessors, (367), 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) [2022-12-13 21:50:56,063 INFO L276 IsEmpty]: Start isEmpty. Operand 236523 states and 244705 transitions. [2022-12-13 21:50:56,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 855 [2022-12-13 21:50:56,087 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 21:50:56,088 INFO L195 NwaCegarLoop]: 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-12-13 21:50:56,092 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ab7d949-290c-4831-b02b-f82bec78b842/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-12-13 21:50:56,288 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ab7d949-290c-4831-b02b-f82bec78b842/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 21:50:56,290 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 21:50:56,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:50:56,292 INFO L85 PathProgramCache]: Analyzing trace with hash -1848329011, now seen corresponding path program 1 times [2022-12-13 21:50:56,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:50:56,293 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1994609886] [2022-12-13 21:50:56,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:50:56,294 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:50:56,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:50:57,026 INFO L134 CoverageAnalysis]: Checked inductivity of 892 backedges. 620 proven. 0 refuted. 0 times theorem prover too weak. 272 trivial. 0 not checked. [2022-12-13 21:50:57,026 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:50:57,027 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1994609886] [2022-12-13 21:50:57,027 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1994609886] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:50:57,027 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:50:57,027 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 21:50:57,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [610084324] [2022-12-13 21:50:57,027 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:50:57,028 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 21:50:57,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:50:57,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 21:50:57,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 21:50:57,029 INFO L87 Difference]: Start difference. First operand 236523 states and 244705 transitions. Second operand has 3 states, 3 states have (on average 224.0) internal successors, (672), 3 states have internal predecessors, (672), 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) [2022-12-13 21:51:00,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 21:51:00,573 INFO L93 Difference]: Finished difference Result 473053 states and 489425 transitions. [2022-12-13 21:51:00,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 21:51:00,574 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 224.0) internal successors, (672), 3 states have internal predecessors, (672), 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 854 [2022-12-13 21:51:00,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 21:51:00,848 INFO L225 Difference]: With dead ends: 473053 [2022-12-13 21:51:00,848 INFO L226 Difference]: Without dead ends: 237319 [2022-12-13 21:51:00,924 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 21:51:00,924 INFO L413 NwaCegarLoop]: 1165 mSDtfsCounter, 781 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 2296 mSolverCounterSat, 567 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 781 SdHoareTripleChecker+Valid, 1203 SdHoareTripleChecker+Invalid, 2863 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 567 IncrementalHoareTripleChecker+Valid, 2296 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-12-13 21:51:00,924 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [781 Valid, 1203 Invalid, 2863 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [567 Valid, 2296 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-12-13 21:51:01,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237319 states. [2022-12-13 21:51:03,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237319 to 232574. [2022-12-13 21:51:03,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 232574 states, 232573 states have (on average 1.032394130015092) internal successors, (240107), 232573 states have internal predecessors, (240107), 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) [2022-12-13 21:51:03,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232574 states to 232574 states and 240107 transitions. [2022-12-13 21:51:03,540 INFO L78 Accepts]: Start accepts. Automaton has 232574 states and 240107 transitions. Word has length 854 [2022-12-13 21:51:03,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 21:51:03,541 INFO L495 AbstractCegarLoop]: Abstraction has 232574 states and 240107 transitions. [2022-12-13 21:51:03,541 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 224.0) internal successors, (672), 3 states have internal predecessors, (672), 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) [2022-12-13 21:51:03,541 INFO L276 IsEmpty]: Start isEmpty. Operand 232574 states and 240107 transitions. [2022-12-13 21:51:03,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 872 [2022-12-13 21:51:03,688 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 21:51:03,689 INFO L195 NwaCegarLoop]: 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:51:03,689 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-12-13 21:51:03,689 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 21:51:03,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:51:03,689 INFO L85 PathProgramCache]: Analyzing trace with hash -754110877, now seen corresponding path program 1 times [2022-12-13 21:51:03,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:51:03,689 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [111782285] [2022-12-13 21:51:03,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:51:03,690 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:51:03,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:51:04,484 INFO L134 CoverageAnalysis]: Checked inductivity of 1201 backedges. 897 proven. 0 refuted. 0 times theorem prover too weak. 304 trivial. 0 not checked. [2022-12-13 21:51:04,485 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:51:04,485 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [111782285] [2022-12-13 21:51:04,485 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [111782285] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:51:04,485 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:51:04,485 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 21:51:04,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [718910648] [2022-12-13 21:51:04,485 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:51:04,486 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 21:51:04,486 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:51:04,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 21:51:04,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-13 21:51:04,488 INFO L87 Difference]: Start difference. First operand 232574 states and 240107 transitions. Second operand has 4 states, 4 states have (on average 164.5) internal successors, (658), 3 states have internal predecessors, (658), 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) [2022-12-13 21:51:10,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 21:51:10,715 INFO L93 Difference]: Finished difference Result 532113 states and 550174 transitions. [2022-12-13 21:51:10,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 21:51:10,716 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 164.5) internal successors, (658), 3 states have internal predecessors, (658), 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 871 [2022-12-13 21:51:10,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 21:51:11,011 INFO L225 Difference]: With dead ends: 532113 [2022-12-13 21:51:11,011 INFO L226 Difference]: Without dead ends: 316074 [2022-12-13 21:51:11,074 INFO L412 NwaCegarLoop]: 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 [2022-12-13 21:51:11,075 INFO L413 NwaCegarLoop]: 539 mSDtfsCounter, 1538 mSDsluCounter, 165 mSDsCounter, 0 mSdLazyCounter, 4505 mSolverCounterSat, 685 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1538 SdHoareTripleChecker+Valid, 704 SdHoareTripleChecker+Invalid, 5190 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 685 IncrementalHoareTripleChecker+Valid, 4505 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2022-12-13 21:51:11,075 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1538 Valid, 704 Invalid, 5190 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [685 Valid, 4505 Invalid, 0 Unknown, 0 Unchecked, 4.8s Time] [2022-12-13 21:51:11,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 316074 states. [2022-12-13 21:51:13,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 316074 to 312118. [2022-12-13 21:51:14,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 312118 states, 312117 states have (on average 1.0326768487458229) internal successors, (322316), 312117 states have internal predecessors, (322316), 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) [2022-12-13 21:51:14,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 312118 states to 312118 states and 322316 transitions. [2022-12-13 21:51:14,484 INFO L78 Accepts]: Start accepts. Automaton has 312118 states and 322316 transitions. Word has length 871 [2022-12-13 21:51:14,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 21:51:14,484 INFO L495 AbstractCegarLoop]: Abstraction has 312118 states and 322316 transitions. [2022-12-13 21:51:14,484 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 164.5) internal successors, (658), 3 states have internal predecessors, (658), 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) [2022-12-13 21:51:14,484 INFO L276 IsEmpty]: Start isEmpty. Operand 312118 states and 322316 transitions. [2022-12-13 21:51:14,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 979 [2022-12-13 21:51:14,722 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 21:51:14,723 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 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, 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-12-13 21:51:14,723 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-12-13 21:51:14,723 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 21:51:14,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:51:14,724 INFO L85 PathProgramCache]: Analyzing trace with hash -2126713135, now seen corresponding path program 1 times [2022-12-13 21:51:14,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:51:14,724 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [235990244] [2022-12-13 21:51:14,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:51:14,724 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:51:14,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:51:15,705 INFO L134 CoverageAnalysis]: Checked inductivity of 1756 backedges. 1198 proven. 0 refuted. 0 times theorem prover too weak. 558 trivial. 0 not checked. [2022-12-13 21:51:15,706 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:51:15,706 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [235990244] [2022-12-13 21:51:15,706 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [235990244] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:51:15,706 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:51:15,706 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 21:51:15,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1696215799] [2022-12-13 21:51:15,706 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:51:15,706 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 21:51:15,706 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:51:15,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 21:51:15,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 21:51:15,707 INFO L87 Difference]: Start difference. First operand 312118 states and 322316 transitions. Second operand has 3 states, 3 states have (on average 181.33333333333334) internal successors, (544), 3 states have internal predecessors, (544), 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) [2022-12-13 21:51:19,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 21:51:19,622 INFO L93 Difference]: Finished difference Result 636060 states and 656887 transitions. [2022-12-13 21:51:19,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 21:51:19,624 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 181.33333333333334) internal successors, (544), 3 states have internal predecessors, (544), 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 978 [2022-12-13 21:51:19,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 21:51:20,090 INFO L225 Difference]: With dead ends: 636060 [2022-12-13 21:51:20,090 INFO L226 Difference]: Without dead ends: 330240 [2022-12-13 21:51:20,191 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 21:51:20,192 INFO L413 NwaCegarLoop]: 835 mSDtfsCounter, 736 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 2468 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 736 SdHoareTripleChecker+Valid, 952 SdHoareTripleChecker+Invalid, 2556 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 2468 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-12-13 21:51:20,192 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [736 Valid, 952 Invalid, 2556 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 2468 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2022-12-13 21:51:20,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 330240 states. [2022-12-13 21:51:23,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 330240 to 325501. [2022-12-13 21:51:23,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 325501 states, 325500 states have (on average 1.0321198156682028) internal successors, (335955), 325500 states have internal predecessors, (335955), 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) [2022-12-13 21:51:23,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 325501 states to 325501 states and 335955 transitions. [2022-12-13 21:51:23,925 INFO L78 Accepts]: Start accepts. Automaton has 325501 states and 335955 transitions. Word has length 978 [2022-12-13 21:51:23,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 21:51:23,925 INFO L495 AbstractCegarLoop]: Abstraction has 325501 states and 335955 transitions. [2022-12-13 21:51:23,926 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 181.33333333333334) internal successors, (544), 3 states have internal predecessors, (544), 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) [2022-12-13 21:51:23,926 INFO L276 IsEmpty]: Start isEmpty. Operand 325501 states and 335955 transitions. [2022-12-13 21:51:23,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1021 [2022-12-13 21:51:23,979 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 21:51:23,979 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 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, 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:51:23,979 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-12-13 21:51:23,979 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 21:51:23,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:51:23,980 INFO L85 PathProgramCache]: Analyzing trace with hash 1418655447, now seen corresponding path program 1 times [2022-12-13 21:51:23,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:51:23,980 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [473607290] [2022-12-13 21:51:23,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:51:23,980 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:51:24,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:51:25,348 INFO L134 CoverageAnalysis]: Checked inductivity of 1905 backedges. 963 proven. 638 refuted. 0 times theorem prover too weak. 304 trivial. 0 not checked. [2022-12-13 21:51:25,348 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:51:25,348 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [473607290] [2022-12-13 21:51:25,348 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [473607290] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 21:51:25,348 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1558008380] [2022-12-13 21:51:25,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:51:25,348 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 21:51:25,348 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ab7d949-290c-4831-b02b-f82bec78b842/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 21:51:25,349 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ab7d949-290c-4831-b02b-f82bec78b842/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 21:51:25,350 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ab7d949-290c-4831-b02b-f82bec78b842/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-12-13 21:51:25,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:51:25,584 INFO L263 TraceCheckSpWp]: Trace formula consists of 1263 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 21:51:25,590 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:51:25,833 INFO L134 CoverageAnalysis]: Checked inductivity of 1905 backedges. 887 proven. 0 refuted. 0 times theorem prover too weak. 1018 trivial. 0 not checked. [2022-12-13 21:51:25,834 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 21:51:25,834 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1558008380] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:51:25,834 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 21:51:25,834 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2022-12-13 21:51:25,834 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [622209292] [2022-12-13 21:51:25,834 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:51:25,835 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 21:51:25,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:51:25,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 21:51:25,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-12-13 21:51:25,836 INFO L87 Difference]: Start difference. First operand 325501 states and 335955 transitions. Second operand has 4 states, 4 states have (on average 125.0) internal successors, (500), 3 states have internal predecessors, (500), 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) [2022-12-13 21:51:32,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 21:51:32,949 INFO L93 Difference]: Finished difference Result 664476 states and 685787 transitions. [2022-12-13 21:51:32,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 21:51:32,950 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 125.0) internal successors, (500), 3 states have internal predecessors, (500), 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 1020 [2022-12-13 21:51:32,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 21:51:33,333 INFO L225 Difference]: With dead ends: 664476 [2022-12-13 21:51:33,333 INFO L226 Difference]: Without dead ends: 346060 [2022-12-13 21:51:33,445 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1023 GetRequests, 1018 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-12-13 21:51:33,445 INFO L413 NwaCegarLoop]: 562 mSDtfsCounter, 1635 mSDsluCounter, 160 mSDsCounter, 0 mSdLazyCounter, 5327 mSolverCounterSat, 635 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1635 SdHoareTripleChecker+Valid, 722 SdHoareTripleChecker+Invalid, 5962 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 635 IncrementalHoareTripleChecker+Valid, 5327 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.4s IncrementalHoareTripleChecker+Time [2022-12-13 21:51:33,446 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1635 Valid, 722 Invalid, 5962 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [635 Valid, 5327 Invalid, 0 Unknown, 0 Unchecked, 5.4s Time] [2022-12-13 21:51:33,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 346060 states. [2022-12-13 21:51:36,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 346060 to 336524. [2022-12-13 21:51:36,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 336524 states, 336523 states have (on average 1.0318967797149081) internal successors, (347257), 336523 states have internal predecessors, (347257), 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) [2022-12-13 21:51:37,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 336524 states to 336524 states and 347257 transitions. [2022-12-13 21:51:37,317 INFO L78 Accepts]: Start accepts. Automaton has 336524 states and 347257 transitions. Word has length 1020 [2022-12-13 21:51:37,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 21:51:37,317 INFO L495 AbstractCegarLoop]: Abstraction has 336524 states and 347257 transitions. [2022-12-13 21:51:37,318 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 125.0) internal successors, (500), 3 states have internal predecessors, (500), 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) [2022-12-13 21:51:37,318 INFO L276 IsEmpty]: Start isEmpty. Operand 336524 states and 347257 transitions. [2022-12-13 21:51:37,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1175 [2022-12-13 21:51:37,376 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 21:51:37,376 INFO L195 NwaCegarLoop]: 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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:51:37,382 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ab7d949-290c-4831-b02b-f82bec78b842/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-12-13 21:51:37,577 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ab7d949-290c-4831-b02b-f82bec78b842/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2022-12-13 21:51:37,578 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 21:51:37,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:51:37,580 INFO L85 PathProgramCache]: Analyzing trace with hash -654509016, now seen corresponding path program 1 times [2022-12-13 21:51:37,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:51:37,580 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1586446617] [2022-12-13 21:51:37,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:51:37,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:51:37,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:51:38,732 INFO L134 CoverageAnalysis]: Checked inductivity of 1696 backedges. 1082 proven. 228 refuted. 0 times theorem prover too weak. 386 trivial. 0 not checked. [2022-12-13 21:51:38,732 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:51:38,732 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1586446617] [2022-12-13 21:51:38,732 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1586446617] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 21:51:38,732 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [140087541] [2022-12-13 21:51:38,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:51:38,732 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 21:51:38,732 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ab7d949-290c-4831-b02b-f82bec78b842/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 21:51:38,733 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ab7d949-290c-4831-b02b-f82bec78b842/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 21:51:38,734 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ab7d949-290c-4831-b02b-f82bec78b842/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-12-13 21:51:39,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:51:39,038 INFO L263 TraceCheckSpWp]: Trace formula consists of 1400 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 21:51:39,044 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:51:40,036 INFO L134 CoverageAnalysis]: Checked inductivity of 1696 backedges. 1082 proven. 228 refuted. 0 times theorem prover too weak. 386 trivial. 0 not checked. [2022-12-13 21:51:40,036 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 21:51:40,785 INFO L134 CoverageAnalysis]: Checked inductivity of 1696 backedges. 1082 proven. 228 refuted. 0 times theorem prover too weak. 386 trivial. 0 not checked. [2022-12-13 21:51:40,786 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [140087541] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 21:51:40,786 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 21:51:40,786 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2022-12-13 21:51:40,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1483504312] [2022-12-13 21:51:40,786 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 21:51:40,787 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 21:51:40,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:51:40,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 21:51:40,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-12-13 21:51:40,788 INFO L87 Difference]: Start difference. First operand 336524 states and 347257 transitions. Second operand has 6 states, 6 states have (on average 222.33333333333334) internal successors, (1334), 5 states have internal predecessors, (1334), 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) [2022-12-13 21:51:49,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 21:51:49,978 INFO L93 Difference]: Finished difference Result 702977 states and 726009 transitions. [2022-12-13 21:51:49,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 21:51:49,979 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 222.33333333333334) internal successors, (1334), 5 states have internal predecessors, (1334), 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 1174 [2022-12-13 21:51:49,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 21:51:50,366 INFO L225 Difference]: With dead ends: 702977 [2022-12-13 21:51:50,367 INFO L226 Difference]: Without dead ends: 379046 [2022-12-13 21:51:50,493 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2349 GetRequests, 2344 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-12-13 21:51:50,494 INFO L413 NwaCegarLoop]: 503 mSDtfsCounter, 3576 mSDsluCounter, 280 mSDsCounter, 0 mSdLazyCounter, 5924 mSolverCounterSat, 1390 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3576 SdHoareTripleChecker+Valid, 783 SdHoareTripleChecker+Invalid, 7314 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1390 IncrementalHoareTripleChecker+Valid, 5924 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.4s IncrementalHoareTripleChecker+Time [2022-12-13 21:51:50,494 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3576 Valid, 783 Invalid, 7314 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1390 Valid, 5924 Invalid, 0 Unknown, 0 Unchecked, 7.4s Time] [2022-12-13 21:51:50,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 379046 states. [2022-12-13 21:51:53,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 379046 to 267184. [2022-12-13 21:51:53,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 267184 states, 267183 states have (on average 1.0265099201670764) internal successors, (274266), 267183 states have internal predecessors, (274266), 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) [2022-12-13 21:51:53,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267184 states to 267184 states and 274266 transitions. [2022-12-13 21:51:53,974 INFO L78 Accepts]: Start accepts. Automaton has 267184 states and 274266 transitions. Word has length 1174 [2022-12-13 21:51:53,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 21:51:53,974 INFO L495 AbstractCegarLoop]: Abstraction has 267184 states and 274266 transitions. [2022-12-13 21:51:53,974 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 222.33333333333334) internal successors, (1334), 5 states have internal predecessors, (1334), 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) [2022-12-13 21:51:53,975 INFO L276 IsEmpty]: Start isEmpty. Operand 267184 states and 274266 transitions. [2022-12-13 21:51:54,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1305 [2022-12-13 21:51:54,209 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 21:51:54,210 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 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, 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-12-13 21:51:54,216 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ab7d949-290c-4831-b02b-f82bec78b842/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2022-12-13 21:51:54,416 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ab7d949-290c-4831-b02b-f82bec78b842/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2022-12-13 21:51:54,418 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 21:51:54,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:51:54,420 INFO L85 PathProgramCache]: Analyzing trace with hash -1246090465, now seen corresponding path program 1 times [2022-12-13 21:51:54,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:51:54,420 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2049705293] [2022-12-13 21:51:54,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:51:54,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:51:54,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:51:56,792 INFO L134 CoverageAnalysis]: Checked inductivity of 2322 backedges. 1176 proven. 796 refuted. 0 times theorem prover too weak. 350 trivial. 0 not checked. [2022-12-13 21:51:56,792 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:51:56,792 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2049705293] [2022-12-13 21:51:56,792 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2049705293] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 21:51:56,793 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1518433113] [2022-12-13 21:51:56,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:51:56,793 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 21:51:56,793 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ab7d949-290c-4831-b02b-f82bec78b842/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 21:51:56,794 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ab7d949-290c-4831-b02b-f82bec78b842/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 21:51:56,794 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ab7d949-290c-4831-b02b-f82bec78b842/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-12-13 21:51:57,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:51:57,218 INFO L263 TraceCheckSpWp]: Trace formula consists of 1554 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-13 21:51:57,226 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:51:58,728 INFO L134 CoverageAnalysis]: Checked inductivity of 2322 backedges. 1176 proven. 796 refuted. 0 times theorem prover too weak. 350 trivial. 0 not checked. [2022-12-13 21:51:58,728 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 21:51:59,760 INFO L134 CoverageAnalysis]: Checked inductivity of 2322 backedges. 1628 proven. 344 refuted. 0 times theorem prover too weak. 350 trivial. 0 not checked. [2022-12-13 21:51:59,760 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1518433113] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 21:51:59,760 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 21:51:59,761 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2022-12-13 21:51:59,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1208752814] [2022-12-13 21:51:59,761 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 21:51:59,762 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-13 21:51:59,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:51:59,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-13 21:51:59,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=29, Unknown=0, NotChecked=0, Total=56 [2022-12-13 21:51:59,763 INFO L87 Difference]: Start difference. First operand 267184 states and 274266 transitions. Second operand has 8 states, 8 states have (on average 222.375) internal successors, (1779), 7 states have internal predecessors, (1779), 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) [2022-12-13 21:52:11,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 21:52:11,834 INFO L93 Difference]: Finished difference Result 624265 states and 642423 transitions. [2022-12-13 21:52:11,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 21:52:11,835 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 222.375) internal successors, (1779), 7 states have internal predecessors, (1779), 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 1304 [2022-12-13 21:52:11,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 21:52:12,222 INFO L225 Difference]: With dead ends: 624265 [2022-12-13 21:52:12,222 INFO L226 Difference]: Without dead ends: 374404 [2022-12-13 21:52:12,333 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2610 GetRequests, 2603 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=29, Unknown=0, NotChecked=0, Total=56 [2022-12-13 21:52:12,334 INFO L413 NwaCegarLoop]: 313 mSDtfsCounter, 3927 mSDsluCounter, 518 mSDsCounter, 0 mSdLazyCounter, 10679 mSolverCounterSat, 2774 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3927 SdHoareTripleChecker+Valid, 831 SdHoareTripleChecker+Invalid, 13453 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2774 IncrementalHoareTripleChecker+Valid, 10679 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.4s IncrementalHoareTripleChecker+Time [2022-12-13 21:52:12,334 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3927 Valid, 831 Invalid, 13453 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2774 Valid, 10679 Invalid, 0 Unknown, 0 Unchecked, 10.4s Time] [2022-12-13 21:52:12,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 374404 states. [2022-12-13 21:52:15,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 374404 to 357013. [2022-12-13 21:52:15,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 357013 states, 357012 states have (on average 1.0296208530805686) internal successors, (367587), 357012 states have internal predecessors, (367587), 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) [2022-12-13 21:52:16,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 357013 states to 357013 states and 367587 transitions. [2022-12-13 21:52:16,449 INFO L78 Accepts]: Start accepts. Automaton has 357013 states and 367587 transitions. Word has length 1304 [2022-12-13 21:52:16,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 21:52:16,449 INFO L495 AbstractCegarLoop]: Abstraction has 357013 states and 367587 transitions. [2022-12-13 21:52:16,450 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 222.375) internal successors, (1779), 7 states have internal predecessors, (1779), 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) [2022-12-13 21:52:16,450 INFO L276 IsEmpty]: Start isEmpty. Operand 357013 states and 367587 transitions. [2022-12-13 21:52:16,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1390 [2022-12-13 21:52:16,517 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 21:52:16,517 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-12-13 21:52:16,523 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ab7d949-290c-4831-b02b-f82bec78b842/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2022-12-13 21:52:16,718 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ab7d949-290c-4831-b02b-f82bec78b842/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2022-12-13 21:52:16,720 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 21:52:16,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:52:16,721 INFO L85 PathProgramCache]: Analyzing trace with hash -1883031203, now seen corresponding path program 1 times [2022-12-13 21:52:16,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:52:16,722 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [281801406] [2022-12-13 21:52:16,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:52:16,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:52:16,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:52:17,786 INFO L134 CoverageAnalysis]: Checked inductivity of 3422 backedges. 2081 proven. 0 refuted. 0 times theorem prover too weak. 1341 trivial. 0 not checked. [2022-12-13 21:52:17,786 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:52:17,787 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [281801406] [2022-12-13 21:52:17,787 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [281801406] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:52:17,787 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:52:17,787 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 21:52:17,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [247727656] [2022-12-13 21:52:17,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:52:17,789 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 21:52:17,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:52:17,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 21:52:17,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 21:52:17,790 INFO L87 Difference]: Start difference. First operand 357013 states and 367587 transitions. Second operand has 3 states, 3 states have (on average 247.33333333333334) internal successors, (742), 3 states have internal predecessors, (742), 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) [2022-12-13 21:52:21,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 21:52:21,796 INFO L93 Difference]: Finished difference Result 694362 states and 715194 transitions. [2022-12-13 21:52:21,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 21:52:21,797 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 247.33333333333334) internal successors, (742), 3 states have internal predecessors, (742), 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 1389 [2022-12-13 21:52:21,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 21:52:22,170 INFO L225 Difference]: With dead ends: 694362 [2022-12-13 21:52:22,170 INFO L226 Difference]: Without dead ends: 356238 [2022-12-13 21:52:22,289 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 21:52:22,290 INFO L413 NwaCegarLoop]: 1559 mSDtfsCounter, 776 mSDsluCounter, 119 mSDsCounter, 0 mSdLazyCounter, 2378 mSolverCounterSat, 128 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 776 SdHoareTripleChecker+Valid, 1678 SdHoareTripleChecker+Invalid, 2506 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 128 IncrementalHoareTripleChecker+Valid, 2378 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-12-13 21:52:22,290 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [776 Valid, 1678 Invalid, 2506 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [128 Valid, 2378 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-12-13 21:52:22,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 356238 states. [2022-12-13 21:52:25,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 356238 to 348341. [2022-12-13 21:52:25,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 348341 states, 348340 states have (on average 1.0265401619107768) internal successors, (357585), 348340 states have internal predecessors, (357585), 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) [2022-12-13 21:52:25,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 348341 states to 348341 states and 357585 transitions. [2022-12-13 21:52:25,946 INFO L78 Accepts]: Start accepts. Automaton has 348341 states and 357585 transitions. Word has length 1389 [2022-12-13 21:52:25,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 21:52:25,947 INFO L495 AbstractCegarLoop]: Abstraction has 348341 states and 357585 transitions. [2022-12-13 21:52:25,947 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 247.33333333333334) internal successors, (742), 3 states have internal predecessors, (742), 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) [2022-12-13 21:52:25,947 INFO L276 IsEmpty]: Start isEmpty. Operand 348341 states and 357585 transitions. [2022-12-13 21:52:26,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1465 [2022-12-13 21:52:26,018 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 21:52:26,019 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 7, 7, 7, 7, 7, 6, 6, 6, 6, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:52:26,019 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-12-13 21:52:26,019 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 21:52:26,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:52:26,019 INFO L85 PathProgramCache]: Analyzing trace with hash -1220913481, now seen corresponding path program 1 times [2022-12-13 21:52:26,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:52:26,020 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [53619474] [2022-12-13 21:52:26,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:52:26,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:52:26,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:52:27,255 INFO L134 CoverageAnalysis]: Checked inductivity of 3788 backedges. 2430 proven. 0 refuted. 0 times theorem prover too weak. 1358 trivial. 0 not checked. [2022-12-13 21:52:27,255 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:52:27,255 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [53619474] [2022-12-13 21:52:27,255 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [53619474] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:52:27,255 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:52:27,256 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 21:52:27,256 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [466888515] [2022-12-13 21:52:27,256 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:52:27,257 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 21:52:27,257 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:52:27,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 21:52:27,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 21:52:27,258 INFO L87 Difference]: Start difference. First operand 348341 states and 357585 transitions. Second operand has 3 states, 3 states have (on average 262.3333333333333) internal successors, (787), 3 states have internal predecessors, (787), 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) [2022-12-13 21:52:31,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 21:52:31,309 INFO L93 Difference]: Finished difference Result 682509 states and 700829 transitions. [2022-12-13 21:52:31,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 21:52:31,310 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 262.3333333333333) internal successors, (787), 3 states have internal predecessors, (787), 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 1464 [2022-12-13 21:52:31,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 21:52:31,664 INFO L225 Difference]: With dead ends: 682509 [2022-12-13 21:52:31,664 INFO L226 Difference]: Without dead ends: 353854 [2022-12-13 21:52:31,794 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 21:52:31,794 INFO L413 NwaCegarLoop]: 1625 mSDtfsCounter, 715 mSDsluCounter, 120 mSDsCounter, 0 mSdLazyCounter, 2329 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 715 SdHoareTripleChecker+Valid, 1745 SdHoareTripleChecker+Invalid, 2391 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 2329 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-12-13 21:52:31,794 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [715 Valid, 1745 Invalid, 2391 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 2329 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-12-13 21:52:32,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 353854 states. [2022-12-13 21:52:34,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 353854 to 351489. [2022-12-13 21:52:35,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 351489 states, 351488 states have (on average 1.0262000409686818) internal successors, (360697), 351488 states have internal predecessors, (360697), 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) [2022-12-13 21:52:35,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 351489 states to 351489 states and 360697 transitions. [2022-12-13 21:52:35,501 INFO L78 Accepts]: Start accepts. Automaton has 351489 states and 360697 transitions. Word has length 1464 [2022-12-13 21:52:35,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 21:52:35,501 INFO L495 AbstractCegarLoop]: Abstraction has 351489 states and 360697 transitions. [2022-12-13 21:52:35,501 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 262.3333333333333) internal successors, (787), 3 states have internal predecessors, (787), 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) [2022-12-13 21:52:35,501 INFO L276 IsEmpty]: Start isEmpty. Operand 351489 states and 360697 transitions. [2022-12-13 21:52:35,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1468 [2022-12-13 21:52:35,573 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 21:52:35,573 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 6, 6, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:52:35,574 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-12-13 21:52:35,574 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 21:52:35,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:52:35,574 INFO L85 PathProgramCache]: Analyzing trace with hash -249239694, now seen corresponding path program 1 times [2022-12-13 21:52:35,574 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:52:35,574 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [633065506] [2022-12-13 21:52:35,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:52:35,574 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:52:35,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:52:37,234 INFO L134 CoverageAnalysis]: Checked inductivity of 3402 backedges. 2291 proven. 0 refuted. 0 times theorem prover too weak. 1111 trivial. 0 not checked. [2022-12-13 21:52:37,234 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:52:37,234 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [633065506] [2022-12-13 21:52:37,234 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [633065506] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:52:37,234 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:52:37,235 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 21:52:37,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [16413728] [2022-12-13 21:52:37,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:52:37,236 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 21:52:37,237 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:52:37,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 21:52:37,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 21:52:37,238 INFO L87 Difference]: Start difference. First operand 351489 states and 360697 transitions. Second operand has 3 states, 3 states have (on average 263.0) internal successors, (789), 3 states have internal predecessors, (789), 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) [2022-12-13 21:52:42,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 21:52:42,259 INFO L93 Difference]: Finished difference Result 728207 states and 747483 transitions. [2022-12-13 21:52:42,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 21:52:42,260 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 263.0) internal successors, (789), 3 states have internal predecessors, (789), 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 1467 [2022-12-13 21:52:42,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 21:52:42,794 INFO L225 Difference]: With dead ends: 728207 [2022-12-13 21:52:42,794 INFO L226 Difference]: Without dead ends: 384590 [2022-12-13 21:52:42,875 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 21:52:42,876 INFO L413 NwaCegarLoop]: 1607 mSDtfsCounter, 755 mSDsluCounter, 104 mSDsCounter, 0 mSdLazyCounter, 2592 mSolverCounterSat, 312 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 755 SdHoareTripleChecker+Valid, 1711 SdHoareTripleChecker+Invalid, 2904 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 312 IncrementalHoareTripleChecker+Valid, 2592 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2022-12-13 21:52:42,876 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [755 Valid, 1711 Invalid, 2904 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [312 Valid, 2592 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2022-12-13 21:52:43,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 384590 states. [2022-12-13 21:52:46,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 384590 to 367235. [2022-12-13 21:52:46,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 367235 states, 367234 states have (on average 1.02552323586596) internal successors, (376607), 367234 states have internal predecessors, (376607), 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) [2022-12-13 21:52:46,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 367235 states to 367235 states and 376607 transitions. [2022-12-13 21:52:46,702 INFO L78 Accepts]: Start accepts. Automaton has 367235 states and 376607 transitions. Word has length 1467 [2022-12-13 21:52:46,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 21:52:46,703 INFO L495 AbstractCegarLoop]: Abstraction has 367235 states and 376607 transitions. [2022-12-13 21:52:46,703 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 263.0) internal successors, (789), 3 states have internal predecessors, (789), 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) [2022-12-13 21:52:46,703 INFO L276 IsEmpty]: Start isEmpty. Operand 367235 states and 376607 transitions. [2022-12-13 21:52:46,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1474 [2022-12-13 21:52:46,772 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 21:52:46,772 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-12-13 21:52:46,772 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-12-13 21:52:46,773 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 21:52:46,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:52:46,773 INFO L85 PathProgramCache]: Analyzing trace with hash -1290330974, now seen corresponding path program 1 times [2022-12-13 21:52:46,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:52:46,773 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1144420964] [2022-12-13 21:52:46,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:52:46,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:52:47,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:52:48,097 INFO L134 CoverageAnalysis]: Checked inductivity of 3484 backedges. 2311 proven. 0 refuted. 0 times theorem prover too weak. 1173 trivial. 0 not checked. [2022-12-13 21:52:48,097 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:52:48,097 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1144420964] [2022-12-13 21:52:48,098 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1144420964] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:52:48,098 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:52:48,098 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 21:52:48,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [687591349] [2022-12-13 21:52:48,098 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:52:48,100 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 21:52:48,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:52:48,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 21:52:48,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 21:52:48,101 INFO L87 Difference]: Start difference. First operand 367235 states and 376607 transitions. Second operand has 3 states, 3 states have (on average 258.3333333333333) internal successors, (775), 3 states have internal predecessors, (775), 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) [2022-12-13 21:52:53,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 21:52:53,287 INFO L93 Difference]: Finished difference Result 791248 states and 811595 transitions. [2022-12-13 21:52:53,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 21:52:53,288 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 258.3333333333333) internal successors, (775), 3 states have internal predecessors, (775), 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 1473 [2022-12-13 21:52:53,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 21:52:53,960 INFO L225 Difference]: With dead ends: 791248 [2022-12-13 21:52:53,961 INFO L226 Difference]: Without dead ends: 435826 [2022-12-13 21:52:54,069 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 21:52:54,070 INFO L413 NwaCegarLoop]: 274 mSDtfsCounter, 917 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 2593 mSolverCounterSat, 719 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 917 SdHoareTripleChecker+Valid, 338 SdHoareTripleChecker+Invalid, 3312 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 719 IncrementalHoareTripleChecker+Valid, 2593 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2022-12-13 21:52:54,070 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [917 Valid, 338 Invalid, 3312 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [719 Valid, 2593 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2022-12-13 21:52:54,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 435826 states. [2022-12-13 21:52:58,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 435826 to 393216. [2022-12-13 21:52:58,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 393216 states, 393215 states have (on average 1.0250219345650597) internal successors, (403054), 393215 states have internal predecessors, (403054), 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) [2022-12-13 21:52:58,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 393216 states to 393216 states and 403054 transitions. [2022-12-13 21:52:58,498 INFO L78 Accepts]: Start accepts. Automaton has 393216 states and 403054 transitions. Word has length 1473 [2022-12-13 21:52:58,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 21:52:58,498 INFO L495 AbstractCegarLoop]: Abstraction has 393216 states and 403054 transitions. [2022-12-13 21:52:58,499 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 258.3333333333333) internal successors, (775), 3 states have internal predecessors, (775), 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) [2022-12-13 21:52:58,499 INFO L276 IsEmpty]: Start isEmpty. Operand 393216 states and 403054 transitions. [2022-12-13 21:52:58,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1514 [2022-12-13 21:52:58,758 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 21:52:58,758 INFO L195 NwaCegarLoop]: 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:52:58,759 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-12-13 21:52:58,759 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 21:52:58,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:52:58,759 INFO L85 PathProgramCache]: Analyzing trace with hash 1142938419, now seen corresponding path program 1 times [2022-12-13 21:52:58,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:52:58,759 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1899480338] [2022-12-13 21:52:58,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:52:58,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:52:58,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:53:01,017 INFO L134 CoverageAnalysis]: Checked inductivity of 1368 backedges. 843 proven. 65 refuted. 0 times theorem prover too weak. 460 trivial. 0 not checked. [2022-12-13 21:53:01,017 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:53:01,017 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1899480338] [2022-12-13 21:53:01,018 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1899480338] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 21:53:01,018 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1857364644] [2022-12-13 21:53:01,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:53:01,018 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 21:53:01,018 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ab7d949-290c-4831-b02b-f82bec78b842/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 21:53:01,019 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ab7d949-290c-4831-b02b-f82bec78b842/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 21:53:01,020 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ab7d949-290c-4831-b02b-f82bec78b842/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-12-13 21:53:01,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:53:01,391 INFO L263 TraceCheckSpWp]: Trace formula consists of 1716 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-13 21:53:01,398 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:53:03,573 INFO L134 CoverageAnalysis]: Checked inductivity of 1368 backedges. 843 proven. 65 refuted. 0 times theorem prover too weak. 460 trivial. 0 not checked. [2022-12-13 21:53:03,573 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 21:53:07,362 INFO L134 CoverageAnalysis]: Checked inductivity of 1368 backedges. 908 proven. 0 refuted. 0 times theorem prover too weak. 460 trivial. 0 not checked. [2022-12-13 21:53:07,362 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1857364644] provided 1 perfect and 1 imperfect interpolant sequences [2022-12-13 21:53:07,362 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-12-13 21:53:07,362 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 4] total 7 [2022-12-13 21:53:07,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [60769263] [2022-12-13 21:53:07,363 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:53:07,363 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 21:53:07,363 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:53:07,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 21:53:07,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-12-13 21:53:07,364 INFO L87 Difference]: Start difference. First operand 393216 states and 403054 transitions. Second operand has 4 states, 4 states have (on average 263.75) internal successors, (1055), 4 states have internal predecessors, (1055), 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) [2022-12-13 21:53:14,932 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-13 21:53:21,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 21:53:21,738 INFO L93 Difference]: Finished difference Result 798291 states and 818194 transitions. [2022-12-13 21:53:21,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 21:53:21,739 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 263.75) internal successors, (1055), 4 states have internal predecessors, (1055), 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 1513 [2022-12-13 21:53:21,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 21:53:22,183 INFO L225 Difference]: With dead ends: 798291 [2022-12-13 21:53:22,183 INFO L226 Difference]: Without dead ends: 408225 [2022-12-13 21:53:22,322 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3028 GetRequests, 3022 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-12-13 21:53:22,323 INFO L413 NwaCegarLoop]: 343 mSDtfsCounter, 2129 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 3288 mSolverCounterSat, 1529 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2129 SdHoareTripleChecker+Valid, 389 SdHoareTripleChecker+Invalid, 4818 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1529 IncrementalHoareTripleChecker+Valid, 3288 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.3s IncrementalHoareTripleChecker+Time [2022-12-13 21:53:22,323 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2129 Valid, 389 Invalid, 4818 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1529 Valid, 3288 Invalid, 1 Unknown, 0 Unchecked, 12.3s Time] [2022-12-13 21:53:22,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 408225 states. [2022-12-13 21:53:25,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 408225 to 347527. [2022-12-13 21:53:26,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 347527 states, 347526 states have (on average 1.0247175750879072) internal successors, (356116), 347526 states have internal predecessors, (356116), 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) [2022-12-13 21:53:26,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 347527 states to 347527 states and 356116 transitions. [2022-12-13 21:53:26,571 INFO L78 Accepts]: Start accepts. Automaton has 347527 states and 356116 transitions. Word has length 1513 [2022-12-13 21:53:26,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 21:53:26,571 INFO L495 AbstractCegarLoop]: Abstraction has 347527 states and 356116 transitions. [2022-12-13 21:53:26,571 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 263.75) internal successors, (1055), 4 states have internal predecessors, (1055), 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) [2022-12-13 21:53:26,571 INFO L276 IsEmpty]: Start isEmpty. Operand 347527 states and 356116 transitions. [2022-12-13 21:53:26,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2484 [2022-12-13 21:53:26,798 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 21:53:26,799 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 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, 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, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-12-13 21:53:26,804 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ab7d949-290c-4831-b02b-f82bec78b842/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-12-13 21:53:27,000 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ab7d949-290c-4831-b02b-f82bec78b842/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2022-12-13 21:53:27,001 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 21:53:27,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:53:27,003 INFO L85 PathProgramCache]: Analyzing trace with hash -1344258515, now seen corresponding path program 1 times [2022-12-13 21:53:27,003 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:53:27,003 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [648995998] [2022-12-13 21:53:27,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:53:27,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:53:27,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:53:29,436 INFO L134 CoverageAnalysis]: Checked inductivity of 5632 backedges. 3572 proven. 0 refuted. 0 times theorem prover too weak. 2060 trivial. 0 not checked. [2022-12-13 21:53:29,436 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:53:29,436 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [648995998] [2022-12-13 21:53:29,436 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [648995998] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:53:29,436 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:53:29,437 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 21:53:29,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [625429647] [2022-12-13 21:53:29,437 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:53:29,439 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 21:53:29,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:53:29,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 21:53:29,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-13 21:53:29,441 INFO L87 Difference]: Start difference. First operand 347527 states and 356116 transitions. Second operand has 4 states, 4 states have (on average 340.75) internal successors, (1363), 4 states have internal predecessors, (1363), 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) [2022-12-13 21:53:35,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 21:53:35,049 INFO L93 Difference]: Finished difference Result 691898 states and 709006 transitions. [2022-12-13 21:53:35,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 21:53:35,050 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 340.75) internal successors, (1363), 4 states have internal predecessors, (1363), 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 2483 [2022-12-13 21:53:35,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 21:53:35,398 INFO L225 Difference]: With dead ends: 691898 [2022-12-13 21:53:35,398 INFO L226 Difference]: Without dead ends: 351458 [2022-12-13 21:53:35,527 INFO L412 NwaCegarLoop]: 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 [2022-12-13 21:53:35,527 INFO L413 NwaCegarLoop]: 1361 mSDtfsCounter, 1600 mSDsluCounter, 171 mSDsCounter, 0 mSdLazyCounter, 4075 mSolverCounterSat, 237 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1600 SdHoareTripleChecker+Valid, 1532 SdHoareTripleChecker+Invalid, 4312 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 237 IncrementalHoareTripleChecker+Valid, 4075 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2022-12-13 21:53:35,528 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1600 Valid, 1532 Invalid, 4312 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [237 Valid, 4075 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2022-12-13 21:53:35,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 351458 states. [2022-12-13 21:53:38,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 351458 to 345160. [2022-12-13 21:53:38,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 345160 states, 345159 states have (on average 1.023519595316941) internal successors, (353277), 345159 states have internal predecessors, (353277), 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) [2022-12-13 21:53:39,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 345160 states to 345160 states and 353277 transitions. [2022-12-13 21:53:39,414 INFO L78 Accepts]: Start accepts. Automaton has 345160 states and 353277 transitions. Word has length 2483 [2022-12-13 21:53:39,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 21:53:39,415 INFO L495 AbstractCegarLoop]: Abstraction has 345160 states and 353277 transitions. [2022-12-13 21:53:39,415 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 340.75) internal successors, (1363), 4 states have internal predecessors, (1363), 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) [2022-12-13 21:53:39,415 INFO L276 IsEmpty]: Start isEmpty. Operand 345160 states and 353277 transitions. [2022-12-13 21:53:39,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2512 [2022-12-13 21:53:39,643 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 21:53:39,644 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 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, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-12-13 21:53:39,644 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2022-12-13 21:53:39,644 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 21:53:39,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:53:39,645 INFO L85 PathProgramCache]: Analyzing trace with hash -453726278, now seen corresponding path program 1 times [2022-12-13 21:53:39,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:53:39,645 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1968813127] [2022-12-13 21:53:39,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:53:39,645 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:53:39,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:53:42,354 INFO L134 CoverageAnalysis]: Checked inductivity of 5785 backedges. 2951 proven. 0 refuted. 0 times theorem prover too weak. 2834 trivial. 0 not checked. [2022-12-13 21:53:42,354 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:53:42,354 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1968813127] [2022-12-13 21:53:42,355 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1968813127] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:53:42,355 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:53:42,355 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 21:53:42,355 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [873777966] [2022-12-13 21:53:42,355 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:53:42,356 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 21:53:42,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:53:42,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 21:53:42,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 21:53:42,357 INFO L87 Difference]: Start difference. First operand 345160 states and 353277 transitions. Second operand has 4 states, 4 states have (on average 309.5) internal successors, (1238), 4 states have internal predecessors, (1238), 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) [2022-12-13 21:53:50,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 21:53:50,419 INFO L93 Difference]: Finished difference Result 751848 states and 769502 transitions. [2022-12-13 21:53:50,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 21:53:50,420 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 309.5) internal successors, (1238), 4 states have internal predecessors, (1238), 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 2511 [2022-12-13 21:53:50,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 21:53:50,848 INFO L225 Difference]: With dead ends: 751848 [2022-12-13 21:53:50,848 INFO L226 Difference]: Without dead ends: 409840 [2022-12-13 21:53:50,949 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 21:53:50,949 INFO L413 NwaCegarLoop]: 546 mSDtfsCounter, 1669 mSDsluCounter, 208 mSDsCounter, 0 mSdLazyCounter, 5731 mSolverCounterSat, 644 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1669 SdHoareTripleChecker+Valid, 754 SdHoareTripleChecker+Invalid, 6375 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 644 IncrementalHoareTripleChecker+Valid, 5731 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.0s IncrementalHoareTripleChecker+Time [2022-12-13 21:53:50,949 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1669 Valid, 754 Invalid, 6375 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [644 Valid, 5731 Invalid, 0 Unknown, 0 Unchecked, 6.0s Time] [2022-12-13 21:53:51,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 409840 states. [2022-12-13 21:53:54,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 409840 to 361686. [2022-12-13 21:53:54,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 361686 states, 361685 states have (on average 1.0229398509752963) internal successors, (369982), 361685 states have internal predecessors, (369982), 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) [2022-12-13 21:53:55,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 361686 states to 361686 states and 369982 transitions. [2022-12-13 21:53:55,182 INFO L78 Accepts]: Start accepts. Automaton has 361686 states and 369982 transitions. Word has length 2511 [2022-12-13 21:53:55,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 21:53:55,183 INFO L495 AbstractCegarLoop]: Abstraction has 361686 states and 369982 transitions. [2022-12-13 21:53:55,183 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 309.5) internal successors, (1238), 4 states have internal predecessors, (1238), 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) [2022-12-13 21:53:55,183 INFO L276 IsEmpty]: Start isEmpty. Operand 361686 states and 369982 transitions. [2022-12-13 21:53:55,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2731 [2022-12-13 21:53:55,634 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 21:53:55,635 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 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, 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-12-13 21:53:55,635 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2022-12-13 21:53:55,635 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 21:53:55,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:53:55,635 INFO L85 PathProgramCache]: Analyzing trace with hash 1738897382, now seen corresponding path program 1 times [2022-12-13 21:53:55,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:53:55,636 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [373002098] [2022-12-13 21:53:55,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:53:55,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:53:55,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:53:59,169 INFO L134 CoverageAnalysis]: Checked inductivity of 6538 backedges. 3764 proven. 0 refuted. 0 times theorem prover too weak. 2774 trivial. 0 not checked. [2022-12-13 21:53:59,169 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:53:59,169 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [373002098] [2022-12-13 21:53:59,170 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [373002098] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:53:59,170 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:53:59,170 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 21:53:59,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1438239517] [2022-12-13 21:53:59,170 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:53:59,171 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 21:53:59,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:53:59,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 21:53:59,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 21:53:59,172 INFO L87 Difference]: Start difference. First operand 361686 states and 369982 transitions. Second operand has 3 states, 3 states have (on average 423.3333333333333) internal successors, (1270), 3 states have internal predecessors, (1270), 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) [2022-12-13 21:54:04,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 21:54:04,242 INFO L93 Difference]: Finished difference Result 732061 states and 749064 transitions. [2022-12-13 21:54:04,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 21:54:04,243 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 423.3333333333333) internal successors, (1270), 3 states have internal predecessors, (1270), 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 2730 [2022-12-13 21:54:04,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 21:54:04,604 INFO L225 Difference]: With dead ends: 732061 [2022-12-13 21:54:04,604 INFO L226 Difference]: Without dead ends: 379827 [2022-12-13 21:54:04,733 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 21:54:04,733 INFO L413 NwaCegarLoop]: 666 mSDtfsCounter, 689 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 2430 mSolverCounterSat, 215 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 689 SdHoareTripleChecker+Valid, 760 SdHoareTripleChecker+Invalid, 2645 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 215 IncrementalHoareTripleChecker+Valid, 2430 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2022-12-13 21:54:04,734 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [689 Valid, 760 Invalid, 2645 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [215 Valid, 2430 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2022-12-13 21:54:05,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 379827 states. [2022-12-13 21:54:08,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 379827 to 366414. [2022-12-13 21:54:08,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 366414 states, 366413 states have (on average 1.0227612011582559) internal successors, (374753), 366413 states have internal predecessors, (374753), 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) [2022-12-13 21:54:09,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 366414 states to 366414 states and 374753 transitions. [2022-12-13 21:54:09,039 INFO L78 Accepts]: Start accepts. Automaton has 366414 states and 374753 transitions. Word has length 2730 [2022-12-13 21:54:09,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 21:54:09,039 INFO L495 AbstractCegarLoop]: Abstraction has 366414 states and 374753 transitions. [2022-12-13 21:54:09,039 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 423.3333333333333) internal successors, (1270), 3 states have internal predecessors, (1270), 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) [2022-12-13 21:54:09,039 INFO L276 IsEmpty]: Start isEmpty. Operand 366414 states and 374753 transitions. [2022-12-13 21:54:09,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2776 [2022-12-13 21:54:09,280 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 21:54:09,281 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 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, 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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:54:09,281 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2022-12-13 21:54:09,281 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 21:54:09,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:54:09,281 INFO L85 PathProgramCache]: Analyzing trace with hash -2109041651, now seen corresponding path program 1 times [2022-12-13 21:54:09,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:54:09,281 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1412263360] [2022-12-13 21:54:09,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:54:09,282 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:54:09,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:54:11,998 INFO L134 CoverageAnalysis]: Checked inductivity of 6553 backedges. 3574 proven. 0 refuted. 0 times theorem prover too weak. 2979 trivial. 0 not checked. [2022-12-13 21:54:11,998 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:54:11,998 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1412263360] [2022-12-13 21:54:11,998 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1412263360] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:54:11,998 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:54:11,998 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 21:54:11,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [412906015] [2022-12-13 21:54:11,999 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:54:11,999 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 21:54:11,999 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:54:12,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 21:54:12,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 21:54:12,000 INFO L87 Difference]: Start difference. First operand 366414 states and 374753 transitions. Second operand has 3 states, 3 states have (on average 390.3333333333333) internal successors, (1171), 3 states have internal predecessors, (1171), 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) [2022-12-13 21:54:16,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 21:54:16,520 INFO L93 Difference]: Finished difference Result 722604 states and 739140 transitions. [2022-12-13 21:54:16,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 21:54:16,521 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 390.3333333333333) internal successors, (1171), 3 states have internal predecessors, (1171), 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 2775 [2022-12-13 21:54:16,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 21:54:16,862 INFO L225 Difference]: With dead ends: 722604 [2022-12-13 21:54:16,862 INFO L226 Difference]: Without dead ends: 362483 [2022-12-13 21:54:17,147 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 21:54:17,148 INFO L413 NwaCegarLoop]: 1515 mSDtfsCounter, 712 mSDsluCounter, 101 mSDsCounter, 0 mSdLazyCounter, 2281 mSolverCounterSat, 173 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 712 SdHoareTripleChecker+Valid, 1616 SdHoareTripleChecker+Invalid, 2454 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 173 IncrementalHoareTripleChecker+Valid, 2281 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-12-13 21:54:17,148 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [712 Valid, 1616 Invalid, 2454 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [173 Valid, 2281 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2022-12-13 21:54:17,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 362483 states. [2022-12-13 21:54:20,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 362483 to 347505. [2022-12-13 21:54:20,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 347505 states, 347504 states have (on average 1.0198184769096184) internal successors, (354391), 347504 states have internal predecessors, (354391), 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) [2022-12-13 21:54:21,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 347505 states to 347505 states and 354391 transitions. [2022-12-13 21:54:21,210 INFO L78 Accepts]: Start accepts. Automaton has 347505 states and 354391 transitions. Word has length 2775 [2022-12-13 21:54:21,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 21:54:21,211 INFO L495 AbstractCegarLoop]: Abstraction has 347505 states and 354391 transitions. [2022-12-13 21:54:21,211 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 390.3333333333333) internal successors, (1171), 3 states have internal predecessors, (1171), 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) [2022-12-13 21:54:21,211 INFO L276 IsEmpty]: Start isEmpty. Operand 347505 states and 354391 transitions. [2022-12-13 21:54:21,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2777 [2022-12-13 21:54:21,439 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 21:54:21,439 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 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, 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, 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, 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, 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, 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, 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, 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, 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, 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, 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-12-13 21:54:21,440 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2022-12-13 21:54:21,440 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 21:54:21,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:54:21,440 INFO L85 PathProgramCache]: Analyzing trace with hash 1261831715, now seen corresponding path program 1 times [2022-12-13 21:54:21,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:54:21,440 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [81111067] [2022-12-13 21:54:21,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:54:21,440 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:54:21,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:54:25,218 INFO L134 CoverageAnalysis]: Checked inductivity of 6125 backedges. 2734 proven. 2258 refuted. 0 times theorem prover too weak. 1133 trivial. 0 not checked. [2022-12-13 21:54:25,218 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:54:25,218 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [81111067] [2022-12-13 21:54:25,218 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [81111067] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 21:54:25,218 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2114548558] [2022-12-13 21:54:25,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:54:25,219 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 21:54:25,219 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ab7d949-290c-4831-b02b-f82bec78b842/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 21:54:25,219 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ab7d949-290c-4831-b02b-f82bec78b842/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 21:54:25,220 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ab7d949-290c-4831-b02b-f82bec78b842/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-12-13 21:54:25,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:54:25,956 INFO L263 TraceCheckSpWp]: Trace formula consists of 3057 conjuncts, 5 conjunts are in the unsatisfiable core [2022-12-13 21:54:25,970 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:54:29,260 INFO L134 CoverageAnalysis]: Checked inductivity of 6125 backedges. 2734 proven. 2258 refuted. 0 times theorem prover too weak. 1133 trivial. 0 not checked. [2022-12-13 21:54:29,260 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 21:54:31,295 INFO L134 CoverageAnalysis]: Checked inductivity of 6125 backedges. 3863 proven. 1129 refuted. 0 times theorem prover too weak. 1133 trivial. 0 not checked. [2022-12-13 21:54:31,295 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2114548558] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 21:54:31,295 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 21:54:31,296 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2022-12-13 21:54:31,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [530738715] [2022-12-13 21:54:31,296 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 21:54:31,298 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-13 21:54:31,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:54:31,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-13 21:54:31,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=29, Unknown=0, NotChecked=0, Total=56 [2022-12-13 21:54:31,300 INFO L87 Difference]: Start difference. First operand 347505 states and 354391 transitions. Second operand has 8 states, 8 states have (on average 432.75) internal successors, (3462), 7 states have internal predecessors, (3462), 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) [2022-12-13 21:54:44,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 21:54:44,155 INFO L93 Difference]: Finished difference Result 756501 states and 771604 transitions. [2022-12-13 21:54:44,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-13 21:54:44,155 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 432.75) internal successors, (3462), 7 states have internal predecessors, (3462), 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 2776 [2022-12-13 21:54:44,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 21:54:44,668 INFO L225 Difference]: With dead ends: 756501 [2022-12-13 21:54:44,668 INFO L226 Difference]: Without dead ends: 405064 [2022-12-13 21:54:44,763 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5554 GetRequests, 5546 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=29, Unknown=0, NotChecked=0, Total=56 [2022-12-13 21:54:44,764 INFO L413 NwaCegarLoop]: 303 mSDtfsCounter, 3212 mSDsluCounter, 399 mSDsCounter, 0 mSdLazyCounter, 10572 mSolverCounterSat, 2559 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3212 SdHoareTripleChecker+Valid, 702 SdHoareTripleChecker+Invalid, 13131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2559 IncrementalHoareTripleChecker+Valid, 10572 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.8s IncrementalHoareTripleChecker+Time [2022-12-13 21:54:44,764 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3212 Valid, 702 Invalid, 13131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2559 Valid, 10572 Invalid, 0 Unknown, 0 Unchecked, 10.8s Time] [2022-12-13 21:54:45,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 405064 states. [2022-12-13 21:54:48,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 405064 to 322294. [2022-12-13 21:54:48,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 322294 states, 322293 states have (on average 1.0184335371851079) internal successors, (328234), 322293 states have internal predecessors, (328234), 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) [2022-12-13 21:54:48,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 322294 states to 322294 states and 328234 transitions. [2022-12-13 21:54:48,591 INFO L78 Accepts]: Start accepts. Automaton has 322294 states and 328234 transitions. Word has length 2776 [2022-12-13 21:54:48,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 21:54:48,593 INFO L495 AbstractCegarLoop]: Abstraction has 322294 states and 328234 transitions. [2022-12-13 21:54:48,593 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 432.75) internal successors, (3462), 7 states have internal predecessors, (3462), 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) [2022-12-13 21:54:48,593 INFO L276 IsEmpty]: Start isEmpty. Operand 322294 states and 328234 transitions. [2022-12-13 21:54:49,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3001 [2022-12-13 21:54:49,031 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 21:54:49,032 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-12-13 21:54:49,038 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ab7d949-290c-4831-b02b-f82bec78b842/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2022-12-13 21:54:49,232 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ab7d949-290c-4831-b02b-f82bec78b842/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2022-12-13 21:54:49,234 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 21:54:49,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:54:49,235 INFO L85 PathProgramCache]: Analyzing trace with hash 2052676935, now seen corresponding path program 1 times [2022-12-13 21:54:49,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:54:49,235 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [67189021] [2022-12-13 21:54:49,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:54:49,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:54:49,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:54:52,997 INFO L134 CoverageAnalysis]: Checked inductivity of 8282 backedges. 5258 proven. 166 refuted. 0 times theorem prover too weak. 2858 trivial. 0 not checked. [2022-12-13 21:54:52,997 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:54:52,997 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [67189021] [2022-12-13 21:54:52,998 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [67189021] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 21:54:52,998 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [538049907] [2022-12-13 21:54:52,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:54:52,998 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 21:54:52,998 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ab7d949-290c-4831-b02b-f82bec78b842/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 21:54:52,999 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ab7d949-290c-4831-b02b-f82bec78b842/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 21:54:53,000 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ab7d949-290c-4831-b02b-f82bec78b842/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-12-13 21:54:53,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:54:53,765 INFO L263 TraceCheckSpWp]: Trace formula consists of 3392 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-13 21:54:53,779 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:54:54,097 INFO L134 CoverageAnalysis]: Checked inductivity of 8282 backedges. 4598 proven. 0 refuted. 0 times theorem prover too weak. 3684 trivial. 0 not checked. [2022-12-13 21:54:54,097 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 21:54:54,098 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [538049907] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:54:54,098 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 21:54:54,098 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2022-12-13 21:54:54,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1369046545] [2022-12-13 21:54:54,098 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:54:54,099 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 21:54:54,099 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:54:54,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 21:54:54,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-13 21:54:54,100 INFO L87 Difference]: Start difference. First operand 322294 states and 328234 transitions. Second operand has 3 states, 3 states have (on average 425.3333333333333) internal successors, (1276), 3 states have internal predecessors, (1276), 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) [2022-12-13 21:54:58,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 21:54:58,449 INFO L93 Difference]: Finished difference Result 677695 states and 690296 transitions. [2022-12-13 21:54:58,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 21:54:58,450 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 425.3333333333333) internal successors, (1276), 3 states have internal predecessors, (1276), 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 3000 [2022-12-13 21:54:58,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 21:54:58,822 INFO L225 Difference]: With dead ends: 677695 [2022-12-13 21:54:58,822 INFO L226 Difference]: Without dead ends: 362490 [2022-12-13 21:54:58,941 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3003 GetRequests, 3000 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-13 21:54:58,942 INFO L413 NwaCegarLoop]: 1455 mSDtfsCounter, 747 mSDsluCounter, 123 mSDsCounter, 0 mSdLazyCounter, 2345 mSolverCounterSat, 119 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 747 SdHoareTripleChecker+Valid, 1578 SdHoareTripleChecker+Invalid, 2464 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 119 IncrementalHoareTripleChecker+Valid, 2345 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-12-13 21:54:58,942 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [747 Valid, 1578 Invalid, 2464 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [119 Valid, 2345 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2022-12-13 21:54:59,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 362490 states. [2022-12-13 21:55:02,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 362490 to 354595. [2022-12-13 21:55:02,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 354595 states, 354594 states have (on average 1.0181785365798632) internal successors, (361040), 354594 states have internal predecessors, (361040), 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) [2022-12-13 21:55:02,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 354595 states to 354595 states and 361040 transitions. [2022-12-13 21:55:02,986 INFO L78 Accepts]: Start accepts. Automaton has 354595 states and 361040 transitions. Word has length 3000 [2022-12-13 21:55:02,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 21:55:02,987 INFO L495 AbstractCegarLoop]: Abstraction has 354595 states and 361040 transitions. [2022-12-13 21:55:02,987 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 425.3333333333333) internal successors, (1276), 3 states have internal predecessors, (1276), 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) [2022-12-13 21:55:02,987 INFO L276 IsEmpty]: Start isEmpty. Operand 354595 states and 361040 transitions. [2022-12-13 21:55:03,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3008 [2022-12-13 21:55:03,227 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 21:55:03,228 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 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, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:55:03,234 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ab7d949-290c-4831-b02b-f82bec78b842/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2022-12-13 21:55:03,428 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ab7d949-290c-4831-b02b-f82bec78b842/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2022-12-13 21:55:03,430 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 21:55:03,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:55:03,432 INFO L85 PathProgramCache]: Analyzing trace with hash 769881981, now seen corresponding path program 1 times [2022-12-13 21:55:03,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:55:03,433 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [913863356] [2022-12-13 21:55:03,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:55:03,434 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:55:03,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:55:09,018 INFO L134 CoverageAnalysis]: Checked inductivity of 8374 backedges. 4538 proven. 427 refuted. 0 times theorem prover too weak. 3409 trivial. 0 not checked. [2022-12-13 21:55:09,018 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:55:09,018 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [913863356] [2022-12-13 21:55:09,018 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [913863356] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 21:55:09,018 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [545627537] [2022-12-13 21:55:09,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:55:09,019 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 21:55:09,019 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ab7d949-290c-4831-b02b-f82bec78b842/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 21:55:09,019 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ab7d949-290c-4831-b02b-f82bec78b842/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 21:55:09,020 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ab7d949-290c-4831-b02b-f82bec78b842/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-12-13 21:55:10,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:55:10,040 INFO L263 TraceCheckSpWp]: Trace formula consists of 3398 conjuncts, 5 conjunts are in the unsatisfiable core [2022-12-13 21:55:10,055 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:55:11,279 INFO L134 CoverageAnalysis]: Checked inductivity of 8374 backedges. 4965 proven. 0 refuted. 0 times theorem prover too weak. 3409 trivial. 0 not checked. [2022-12-13 21:55:11,279 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 21:55:11,279 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [545627537] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:55:11,279 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 21:55:11,280 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 8 [2022-12-13 21:55:11,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [530231804] [2022-12-13 21:55:11,280 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:55:11,281 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 21:55:11,281 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:55:11,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 21:55:11,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-12-13 21:55:11,282 INFO L87 Difference]: Start difference. First operand 354595 states and 361040 transitions. Second operand has 5 states, 5 states have (on average 291.4) internal successors, (1457), 5 states have internal predecessors, (1457), 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) [2022-12-13 21:55:16,522 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-13 21:55:21,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 21:55:21,573 INFO L93 Difference]: Finished difference Result 715503 states and 728478 transitions. [2022-12-13 21:55:21,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 21:55:21,574 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 291.4) internal successors, (1457), 5 states have internal predecessors, (1457), 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 3007 [2022-12-13 21:55:21,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 21:55:22,085 INFO L225 Difference]: With dead ends: 715503 [2022-12-13 21:55:22,086 INFO L226 Difference]: Without dead ends: 367997 [2022-12-13 21:55:22,194 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3010 GetRequests, 3004 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-12-13 21:55:22,194 INFO L413 NwaCegarLoop]: 1293 mSDtfsCounter, 2123 mSDsluCounter, 239 mSDsCounter, 0 mSdLazyCounter, 6259 mSolverCounterSat, 287 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2123 SdHoareTripleChecker+Valid, 1532 SdHoareTripleChecker+Invalid, 6547 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 287 IncrementalHoareTripleChecker+Valid, 6259 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.3s IncrementalHoareTripleChecker+Time [2022-12-13 21:55:22,194 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2123 Valid, 1532 Invalid, 6547 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [287 Valid, 6259 Invalid, 1 Unknown, 0 Unchecked, 8.3s Time] [2022-12-13 21:55:22,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 367997 states. [2022-12-13 21:55:25,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 367997 to 349866. [2022-12-13 21:55:25,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 349866 states, 349865 states have (on average 1.01784116730739) internal successors, (356107), 349865 states have internal predecessors, (356107), 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) [2022-12-13 21:55:26,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 349866 states to 349866 states and 356107 transitions. [2022-12-13 21:55:26,019 INFO L78 Accepts]: Start accepts. Automaton has 349866 states and 356107 transitions. Word has length 3007 [2022-12-13 21:55:26,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 21:55:26,020 INFO L495 AbstractCegarLoop]: Abstraction has 349866 states and 356107 transitions. [2022-12-13 21:55:26,020 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 291.4) internal successors, (1457), 5 states have internal predecessors, (1457), 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) [2022-12-13 21:55:26,020 INFO L276 IsEmpty]: Start isEmpty. Operand 349866 states and 356107 transitions. [2022-12-13 21:55:26,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3053 [2022-12-13 21:55:26,419 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 21:55:26,419 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-12-13 21:55:26,425 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ab7d949-290c-4831-b02b-f82bec78b842/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-12-13 21:55:26,620 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ab7d949-290c-4831-b02b-f82bec78b842/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2022-12-13 21:55:26,622 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 21:55:26,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:55:26,623 INFO L85 PathProgramCache]: Analyzing trace with hash 35422015, now seen corresponding path program 1 times [2022-12-13 21:55:26,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:55:26,623 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [478309458] [2022-12-13 21:55:26,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:55:26,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:55:26,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:55:31,401 INFO L134 CoverageAnalysis]: Checked inductivity of 8887 backedges. 5018 proven. 0 refuted. 0 times theorem prover too weak. 3869 trivial. 0 not checked. [2022-12-13 21:55:31,401 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:55:31,401 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [478309458] [2022-12-13 21:55:31,401 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [478309458] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:55:31,401 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:55:31,401 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 21:55:31,402 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1221623738] [2022-12-13 21:55:31,402 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:55:31,402 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 21:55:31,403 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:55:31,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 21:55:31,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 21:55:31,403 INFO L87 Difference]: Start difference. First operand 349866 states and 356107 transitions. Second operand has 3 states, 3 states have (on average 425.6666666666667) internal successors, (1277), 3 states have internal predecessors, (1277), 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) [2022-12-13 21:55:36,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 21:55:36,089 INFO L93 Difference]: Finished difference Result 697371 states and 709815 transitions. [2022-12-13 21:55:36,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 21:55:36,090 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 425.6666666666667) internal successors, (1277), 3 states have internal predecessors, (1277), 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 3052 [2022-12-13 21:55:36,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 21:55:36,419 INFO L225 Difference]: With dead ends: 697371 [2022-12-13 21:55:36,419 INFO L226 Difference]: Without dead ends: 353807 [2022-12-13 21:55:36,549 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 21:55:36,549 INFO L413 NwaCegarLoop]: 1528 mSDtfsCounter, 638 mSDsluCounter, 108 mSDsCounter, 0 mSdLazyCounter, 2342 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 638 SdHoareTripleChecker+Valid, 1636 SdHoareTripleChecker+Invalid, 2398 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 2342 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2022-12-13 21:55:36,549 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [638 Valid, 1636 Invalid, 2398 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 2342 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2022-12-13 21:55:37,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 353807 states. [2022-12-13 21:55:39,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 353807 to 347504. [2022-12-13 21:55:40,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 347504 states, 347503 states have (on average 1.0177696307657775) internal successors, (353678), 347503 states have internal predecessors, (353678), 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) [2022-12-13 21:55:40,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 347504 states to 347504 states and 353678 transitions. [2022-12-13 21:55:40,516 INFO L78 Accepts]: Start accepts. Automaton has 347504 states and 353678 transitions. Word has length 3052 [2022-12-13 21:55:40,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 21:55:40,517 INFO L495 AbstractCegarLoop]: Abstraction has 347504 states and 353678 transitions. [2022-12-13 21:55:40,517 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 425.6666666666667) internal successors, (1277), 3 states have internal predecessors, (1277), 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) [2022-12-13 21:55:40,517 INFO L276 IsEmpty]: Start isEmpty. Operand 347504 states and 353678 transitions. [2022-12-13 21:55:40,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3069 [2022-12-13 21:55:40,758 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 21:55:40,758 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 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, 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, 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, 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, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:55:40,758 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2022-12-13 21:55:40,758 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 21:55:40,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:55:40,759 INFO L85 PathProgramCache]: Analyzing trace with hash -1816872429, now seen corresponding path program 1 times [2022-12-13 21:55:40,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:55:40,759 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [213000813] [2022-12-13 21:55:40,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:55:40,759 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:55:41,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:55:43,396 INFO L134 CoverageAnalysis]: Checked inductivity of 8444 backedges. 5174 proven. 0 refuted. 0 times theorem prover too weak. 3270 trivial. 0 not checked. [2022-12-13 21:55:43,396 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:55:43,396 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [213000813] [2022-12-13 21:55:43,396 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [213000813] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:55:43,396 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:55:43,396 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 21:55:43,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1423008593] [2022-12-13 21:55:43,396 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:55:43,397 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 21:55:43,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:55:43,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 21:55:43,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 21:55:43,398 INFO L87 Difference]: Start difference. First operand 347504 states and 353678 transitions. Second operand has 4 states, 4 states have (on average 293.5) internal successors, (1174), 4 states have internal predecessors, (1174), 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) [2022-12-13 21:55:49,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 21:55:49,813 INFO L93 Difference]: Finished difference Result 725739 states and 738492 transitions. [2022-12-13 21:55:49,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 21:55:49,813 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 293.5) internal successors, (1174), 4 states have internal predecessors, (1174), 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 3068 [2022-12-13 21:55:49,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 21:55:50,196 INFO L225 Difference]: With dead ends: 725739 [2022-12-13 21:55:50,196 INFO L226 Difference]: Without dead ends: 384537 [2022-12-13 21:55:50,320 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 21:55:50,320 INFO L413 NwaCegarLoop]: 379 mSDtfsCounter, 1652 mSDsluCounter, 235 mSDsCounter, 0 mSdLazyCounter, 5562 mSolverCounterSat, 563 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1652 SdHoareTripleChecker+Valid, 614 SdHoareTripleChecker+Invalid, 6125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 563 IncrementalHoareTripleChecker+Valid, 5562 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2022-12-13 21:55:50,321 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1652 Valid, 614 Invalid, 6125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [563 Valid, 5562 Invalid, 0 Unknown, 0 Unchecked, 4.5s Time] [2022-12-13 21:55:50,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 384537 states. [2022-12-13 21:55:53,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 384537 to 346716. [2022-12-13 21:55:54,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 346716 states, 346715 states have (on average 1.0177379115411793) internal successors, (352865), 346715 states have internal predecessors, (352865), 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) [2022-12-13 21:55:54,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 346716 states to 346716 states and 352865 transitions. [2022-12-13 21:55:54,499 INFO L78 Accepts]: Start accepts. Automaton has 346716 states and 352865 transitions. Word has length 3068 [2022-12-13 21:55:54,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 21:55:54,500 INFO L495 AbstractCegarLoop]: Abstraction has 346716 states and 352865 transitions. [2022-12-13 21:55:54,500 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 293.5) internal successors, (1174), 4 states have internal predecessors, (1174), 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) [2022-12-13 21:55:54,500 INFO L276 IsEmpty]: Start isEmpty. Operand 346716 states and 352865 transitions. [2022-12-13 21:55:54,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3072 [2022-12-13 21:55:54,736 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 21:55:54,737 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:55:54,737 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2022-12-13 21:55:54,737 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 21:55:54,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:55:54,737 INFO L85 PathProgramCache]: Analyzing trace with hash 986914048, now seen corresponding path program 1 times [2022-12-13 21:55:54,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:55:54,738 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [861564363] [2022-12-13 21:55:54,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:55:54,738 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:55:55,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:56:01,258 INFO L134 CoverageAnalysis]: Checked inductivity of 7242 backedges. 3827 proven. 2077 refuted. 0 times theorem prover too weak. 1338 trivial. 0 not checked. [2022-12-13 21:56:01,258 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:56:01,259 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [861564363] [2022-12-13 21:56:01,259 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [861564363] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 21:56:01,259 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [399835967] [2022-12-13 21:56:01,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:56:01,259 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 21:56:01,259 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ab7d949-290c-4831-b02b-f82bec78b842/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 21:56:01,260 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ab7d949-290c-4831-b02b-f82bec78b842/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 21:56:01,261 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ab7d949-290c-4831-b02b-f82bec78b842/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-12-13 21:56:02,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:56:02,074 INFO L263 TraceCheckSpWp]: Trace formula consists of 3415 conjuncts, 5 conjunts are in the unsatisfiable core [2022-12-13 21:56:02,089 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:56:03,172 INFO L134 CoverageAnalysis]: Checked inductivity of 7242 backedges. 5935 proven. 0 refuted. 0 times theorem prover too weak. 1307 trivial. 0 not checked. [2022-12-13 21:56:03,172 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 21:56:03,172 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [399835967] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:56:03,172 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 21:56:03,173 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [5] total 10 [2022-12-13 21:56:03,173 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [549735445] [2022-12-13 21:56:03,173 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:56:03,174 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 21:56:03,174 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:56:03,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 21:56:03,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-12-13 21:56:03,176 INFO L87 Difference]: Start difference. First operand 346716 states and 352865 transitions. Second operand has 6 states, 6 states have (on average 383.6666666666667) internal successors, (2302), 6 states have internal predecessors, (2302), 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) [2022-12-13 21:56:12,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 21:56:12,046 INFO L93 Difference]: Finished difference Result 718656 states and 731296 transitions. [2022-12-13 21:56:12,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 21:56:12,047 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 383.6666666666667) internal successors, (2302), 6 states have internal predecessors, (2302), 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 3071 [2022-12-13 21:56:12,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 21:56:12,423 INFO L225 Difference]: With dead ends: 718656 [2022-12-13 21:56:12,424 INFO L226 Difference]: Without dead ends: 378242 [2022-12-13 21:56:12,548 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3075 GetRequests, 3067 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-12-13 21:56:12,549 INFO L413 NwaCegarLoop]: 1441 mSDtfsCounter, 1247 mSDsluCounter, 490 mSDsCounter, 0 mSdLazyCounter, 10345 mSolverCounterSat, 151 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1247 SdHoareTripleChecker+Valid, 1931 SdHoareTripleChecker+Invalid, 10496 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 151 IncrementalHoareTripleChecker+Valid, 10345 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.6s IncrementalHoareTripleChecker+Time [2022-12-13 21:56:12,549 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1247 Valid, 1931 Invalid, 10496 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [151 Valid, 10345 Invalid, 0 Unknown, 0 Unchecked, 6.6s Time] [2022-12-13 21:56:12,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 378242 states. [2022-12-13 21:56:15,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 378242 to 345141. [2022-12-13 21:56:16,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 345141 states, 345140 states have (on average 1.0177406269919453) internal successors, (351263), 345140 states have internal predecessors, (351263), 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) [2022-12-13 21:56:16,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 345141 states to 345141 states and 351263 transitions. [2022-12-13 21:56:16,500 INFO L78 Accepts]: Start accepts. Automaton has 345141 states and 351263 transitions. Word has length 3071 [2022-12-13 21:56:16,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 21:56:16,501 INFO L495 AbstractCegarLoop]: Abstraction has 345141 states and 351263 transitions. [2022-12-13 21:56:16,502 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 383.6666666666667) internal successors, (2302), 6 states have internal predecessors, (2302), 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) [2022-12-13 21:56:16,502 INFO L276 IsEmpty]: Start isEmpty. Operand 345141 states and 351263 transitions. [2022-12-13 21:56:16,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3095 [2022-12-13 21:56:16,933 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 21:56:16,933 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 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, 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, 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, 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, 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, 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, 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, 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, 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, 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, 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, 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, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-12-13 21:56:16,939 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ab7d949-290c-4831-b02b-f82bec78b842/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-12-13 21:56:17,134 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ab7d949-290c-4831-b02b-f82bec78b842/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 21:56:17,136 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 21:56:17,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:56:17,137 INFO L85 PathProgramCache]: Analyzing trace with hash -1371748023, now seen corresponding path program 1 times [2022-12-13 21:56:17,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:56:17,137 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [700610515] [2022-12-13 21:56:17,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:56:17,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:56:17,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:56:20,426 INFO L134 CoverageAnalysis]: Checked inductivity of 6689 backedges. 4167 proven. 1309 refuted. 0 times theorem prover too weak. 1213 trivial. 0 not checked. [2022-12-13 21:56:20,427 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:56:20,427 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [700610515] [2022-12-13 21:56:20,427 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [700610515] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 21:56:20,427 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [818663853] [2022-12-13 21:56:20,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:56:20,427 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 21:56:20,427 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ab7d949-290c-4831-b02b-f82bec78b842/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 21:56:20,428 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ab7d949-290c-4831-b02b-f82bec78b842/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 21:56:20,429 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ab7d949-290c-4831-b02b-f82bec78b842/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-12-13 21:56:21,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:56:21,174 INFO L263 TraceCheckSpWp]: Trace formula consists of 3393 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 21:56:21,190 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:56:23,030 INFO L134 CoverageAnalysis]: Checked inductivity of 6689 backedges. 4167 proven. 1309 refuted. 0 times theorem prover too weak. 1213 trivial. 0 not checked. [2022-12-13 21:56:23,030 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 21:56:25,602 INFO L134 CoverageAnalysis]: Checked inductivity of 6689 backedges. 4167 proven. 1309 refuted. 0 times theorem prover too weak. 1213 trivial. 0 not checked. [2022-12-13 21:56:25,602 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [818663853] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 21:56:25,602 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 21:56:25,603 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2022-12-13 21:56:25,603 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1902749657] [2022-12-13 21:56:25,603 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 21:56:25,605 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-13 21:56:25,605 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:56:25,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-13 21:56:25,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2022-12-13 21:56:25,607 INFO L87 Difference]: Start difference. First operand 345141 states and 351263 transitions. Second operand has 8 states, 8 states have (on average 496.75) internal successors, (3974), 7 states have internal predecessors, (3974), 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) [2022-12-13 21:56:37,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 21:56:37,452 INFO L93 Difference]: Finished difference Result 790398 states and 804268 transitions. [2022-12-13 21:56:37,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-13 21:56:37,453 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 496.75) internal successors, (3974), 7 states have internal predecessors, (3974), 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 3094 [2022-12-13 21:56:37,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 21:56:38,047 INFO L225 Difference]: With dead ends: 790398 [2022-12-13 21:56:38,047 INFO L226 Difference]: Without dead ends: 438949 [2022-12-13 21:56:38,150 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6190 GetRequests, 6184 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2022-12-13 21:56:38,150 INFO L413 NwaCegarLoop]: 324 mSDtfsCounter, 2765 mSDsluCounter, 317 mSDsCounter, 0 mSdLazyCounter, 9448 mSolverCounterSat, 2617 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2765 SdHoareTripleChecker+Valid, 641 SdHoareTripleChecker+Invalid, 12065 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2617 IncrementalHoareTripleChecker+Valid, 9448 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.2s IncrementalHoareTripleChecker+Time [2022-12-13 21:56:38,150 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2765 Valid, 641 Invalid, 12065 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2617 Valid, 9448 Invalid, 0 Unknown, 0 Unchecked, 9.2s Time] [2022-12-13 21:56:38,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 438949 states. [2022-12-13 21:56:42,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 438949 to 367210. [2022-12-13 21:56:42,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 367210 states, 367209 states have (on average 1.0166526419559434) internal successors, (373324), 367209 states have internal predecessors, (373324), 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) [2022-12-13 21:56:42,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 367210 states to 367210 states and 373324 transitions. [2022-12-13 21:56:42,560 INFO L78 Accepts]: Start accepts. Automaton has 367210 states and 373324 transitions. Word has length 3094 [2022-12-13 21:56:42,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 21:56:42,562 INFO L495 AbstractCegarLoop]: Abstraction has 367210 states and 373324 transitions. [2022-12-13 21:56:42,562 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 496.75) internal successors, (3974), 7 states have internal predecessors, (3974), 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) [2022-12-13 21:56:42,562 INFO L276 IsEmpty]: Start isEmpty. Operand 367210 states and 373324 transitions. [2022-12-13 21:56:43,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3255 [2022-12-13 21:56:43,016 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 21:56:43,017 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-12-13 21:56:43,022 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ab7d949-290c-4831-b02b-f82bec78b842/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2022-12-13 21:56:43,217 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ab7d949-290c-4831-b02b-f82bec78b842/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable43 [2022-12-13 21:56:43,219 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 21:56:43,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:56:43,221 INFO L85 PathProgramCache]: Analyzing trace with hash 713573742, now seen corresponding path program 1 times [2022-12-13 21:56:43,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:56:43,222 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1328580233] [2022-12-13 21:56:43,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:56:43,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:56:43,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:56:50,343 INFO L134 CoverageAnalysis]: Checked inductivity of 9084 backedges. 6649 proven. 0 refuted. 0 times theorem prover too weak. 2435 trivial. 0 not checked. [2022-12-13 21:56:50,343 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:56:50,343 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1328580233] [2022-12-13 21:56:50,343 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1328580233] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:56:50,343 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:56:50,344 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 21:56:50,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1511246925] [2022-12-13 21:56:50,344 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:56:50,346 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-13 21:56:50,346 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:56:50,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-13 21:56:50,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-12-13 21:56:50,348 INFO L87 Difference]: Start difference. First operand 367210 states and 373324 transitions. Second operand has 8 states, 8 states have (on average 221.875) internal successors, (1775), 7 states have internal predecessors, (1775), 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) [2022-12-13 21:57:03,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 21:57:03,797 INFO L93 Difference]: Finished difference Result 976192 states and 992241 transitions. [2022-12-13 21:57:03,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-12-13 21:57:03,798 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 221.875) internal successors, (1775), 7 states have internal predecessors, (1775), 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 3254 [2022-12-13 21:57:03,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 21:57:04,599 INFO L225 Difference]: With dead ends: 976192 [2022-12-13 21:57:04,599 INFO L226 Difference]: Without dead ends: 611346 [2022-12-13 21:57:04,710 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=127, Invalid=253, Unknown=0, NotChecked=0, Total=380 [2022-12-13 21:57:04,711 INFO L413 NwaCegarLoop]: 173 mSDtfsCounter, 7354 mSDsluCounter, 364 mSDsCounter, 0 mSdLazyCounter, 13444 mSolverCounterSat, 1927 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7354 SdHoareTripleChecker+Valid, 537 SdHoareTripleChecker+Invalid, 15371 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1927 IncrementalHoareTripleChecker+Valid, 13444 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.1s IncrementalHoareTripleChecker+Time [2022-12-13 21:57:04,711 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7354 Valid, 537 Invalid, 15371 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1927 Valid, 13444 Invalid, 0 Unknown, 0 Unchecked, 10.1s Time] [2022-12-13 21:57:05,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 611346 states. [2022-12-13 21:57:09,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 611346 to 364821. [2022-12-13 21:57:09,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 364821 states, 364820 states have (on average 1.0164053505838495) internal successors, (370805), 364820 states have internal predecessors, (370805), 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) [2022-12-13 21:57:10,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 364821 states to 364821 states and 370805 transitions. [2022-12-13 21:57:10,265 INFO L78 Accepts]: Start accepts. Automaton has 364821 states and 370805 transitions. Word has length 3254 [2022-12-13 21:57:10,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 21:57:10,266 INFO L495 AbstractCegarLoop]: Abstraction has 364821 states and 370805 transitions. [2022-12-13 21:57:10,267 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 221.875) internal successors, (1775), 7 states have internal predecessors, (1775), 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) [2022-12-13 21:57:10,267 INFO L276 IsEmpty]: Start isEmpty. Operand 364821 states and 370805 transitions. [2022-12-13 21:57:10,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3566 [2022-12-13 21:57:10,531 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 21:57:10,532 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-12-13 21:57:10,532 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2022-12-13 21:57:10,532 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 21:57:10,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:57:10,532 INFO L85 PathProgramCache]: Analyzing trace with hash 1890361364, now seen corresponding path program 1 times [2022-12-13 21:57:10,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:57:10,533 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1082561775] [2022-12-13 21:57:10,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:57:10,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:57:11,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:57:14,407 INFO L134 CoverageAnalysis]: Checked inductivity of 10796 backedges. 6112 proven. 0 refuted. 0 times theorem prover too weak. 4684 trivial. 0 not checked. [2022-12-13 21:57:14,408 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:57:14,408 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1082561775] [2022-12-13 21:57:14,408 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1082561775] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:57:14,408 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:57:14,409 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 21:57:14,409 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [693896378] [2022-12-13 21:57:14,409 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:57:14,410 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 21:57:14,410 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:57:14,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 21:57:14,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 21:57:14,412 INFO L87 Difference]: Start difference. First operand 364821 states and 370805 transitions. Second operand has 3 states, 3 states have (on average 495.3333333333333) internal successors, (1486), 3 states have internal predecessors, (1486), 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) [2022-12-13 21:57:19,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 21:57:19,556 INFO L93 Difference]: Finished difference Result 725697 states and 737459 transitions. [2022-12-13 21:57:19,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 21:57:19,557 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 495.3333333333333) internal successors, (1486), 3 states have internal predecessors, (1486), 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 3565 [2022-12-13 21:57:19,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 21:57:19,925 INFO L225 Difference]: With dead ends: 725697 [2022-12-13 21:57:19,925 INFO L226 Difference]: Without dead ends: 362454 [2022-12-13 21:57:20,048 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 21:57:20,049 INFO L413 NwaCegarLoop]: 1429 mSDtfsCounter, 631 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 2521 mSolverCounterSat, 222 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 631 SdHoareTripleChecker+Valid, 1521 SdHoareTripleChecker+Invalid, 2743 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 222 IncrementalHoareTripleChecker+Valid, 2521 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2022-12-13 21:57:20,049 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [631 Valid, 1521 Invalid, 2743 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [222 Valid, 2521 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2022-12-13 21:57:20,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 362454 states. [2022-12-13 21:57:23,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 362454 to 348246. [2022-12-13 21:57:23,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 348246 states, 348245 states have (on average 1.015626929317004) internal successors, (353687), 348245 states have internal predecessors, (353687), 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) [2022-12-13 21:57:24,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 348246 states to 348246 states and 353687 transitions. [2022-12-13 21:57:24,358 INFO L78 Accepts]: Start accepts. Automaton has 348246 states and 353687 transitions. Word has length 3565 [2022-12-13 21:57:24,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 21:57:24,359 INFO L495 AbstractCegarLoop]: Abstraction has 348246 states and 353687 transitions. [2022-12-13 21:57:24,359 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 495.3333333333333) internal successors, (1486), 3 states have internal predecessors, (1486), 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) [2022-12-13 21:57:24,360 INFO L276 IsEmpty]: Start isEmpty. Operand 348246 states and 353687 transitions. [2022-12-13 21:57:24,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3739 [2022-12-13 21:57:24,619 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 21:57:24,620 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-12-13 21:57:24,621 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2022-12-13 21:57:24,621 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 21:57:24,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:57:24,621 INFO L85 PathProgramCache]: Analyzing trace with hash -387684663, now seen corresponding path program 1 times [2022-12-13 21:57:24,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:57:24,621 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1667217082] [2022-12-13 21:57:24,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:57:24,622 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:57:25,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:57:31,718 INFO L134 CoverageAnalysis]: Checked inductivity of 12209 backedges. 9682 proven. 0 refuted. 0 times theorem prover too weak. 2527 trivial. 0 not checked. [2022-12-13 21:57:31,719 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:57:31,719 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1667217082] [2022-12-13 21:57:31,719 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1667217082] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:57:31,719 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:57:31,719 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-12-13 21:57:31,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1207980913] [2022-12-13 21:57:31,719 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:57:31,720 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-13 21:57:31,720 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:57:31,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-13 21:57:31,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-12-13 21:57:31,722 INFO L87 Difference]: Start difference. First operand 348246 states and 353687 transitions. Second operand has 8 states, 8 states have (on average 270.75) internal successors, (2166), 8 states have internal predecessors, (2166), 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) [2022-12-13 21:57:42,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 21:57:42,040 INFO L93 Difference]: Finished difference Result 674384 states and 684085 transitions. [2022-12-13 21:57:42,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 21:57:42,042 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 270.75) internal successors, (2166), 8 states have internal predecessors, (2166), 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 3738 [2022-12-13 21:57:42,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 21:57:42,043 INFO L225 Difference]: With dead ends: 674384 [2022-12-13 21:57:42,043 INFO L226 Difference]: Without dead ends: 0 [2022-12-13 21:57:42,209 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-12-13 21:57:42,210 INFO L413 NwaCegarLoop]: 1086 mSDtfsCounter, 3436 mSDsluCounter, 371 mSDsCounter, 0 mSdLazyCounter, 14748 mSolverCounterSat, 440 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3436 SdHoareTripleChecker+Valid, 1457 SdHoareTripleChecker+Invalid, 15188 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 440 IncrementalHoareTripleChecker+Valid, 14748 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.0s IncrementalHoareTripleChecker+Time [2022-12-13 21:57:42,210 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3436 Valid, 1457 Invalid, 15188 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [440 Valid, 14748 Invalid, 0 Unknown, 0 Unchecked, 8.0s Time] [2022-12-13 21:57:42,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-12-13 21:57:42,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-12-13 21:57:42,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 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) [2022-12-13 21:57:42,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-12-13 21:57:42,210 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 3738 [2022-12-13 21:57:42,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 21:57:42,211 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-12-13 21:57:42,211 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 270.75) internal successors, (2166), 8 states have internal predecessors, (2166), 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) [2022-12-13 21:57:42,211 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-12-13 21:57:42,211 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-12-13 21:57:42,213 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-12-13 21:57:42,214 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2022-12-13 21:57:42,215 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions.