./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem19_label46.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_efee8c50-7475-4553-8e1b-cb3f63690804/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efee8c50-7475-4553-8e1b-cb3f63690804/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_efee8c50-7475-4553-8e1b-cb3f63690804/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efee8c50-7475-4553-8e1b-cb3f63690804/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem19_label46.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efee8c50-7475-4553-8e1b-cb3f63690804/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_efee8c50-7475-4553-8e1b-cb3f63690804/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 8cf4f28b762443394edafed0f3ab08c0ba6ed0f26d824c46d396477f011c5356 --- 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 16:40:06,468 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 16:40:06,470 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 16:40:06,489 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 16:40:06,489 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 16:40:06,490 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 16:40:06,492 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 16:40:06,493 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 16:40:06,495 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 16:40:06,496 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 16:40:06,497 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 16:40:06,498 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 16:40:06,498 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 16:40:06,499 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 16:40:06,500 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 16:40:06,502 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 16:40:06,503 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 16:40:06,504 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 16:40:06,505 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 16:40:06,507 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 16:40:06,509 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 16:40:06,510 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 16:40:06,511 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 16:40:06,512 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 16:40:06,516 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 16:40:06,516 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 16:40:06,516 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 16:40:06,517 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 16:40:06,518 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 16:40:06,518 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 16:40:06,519 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 16:40:06,519 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 16:40:06,520 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 16:40:06,520 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 16:40:06,521 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 16:40:06,522 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 16:40:06,522 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 16:40:06,522 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 16:40:06,522 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 16:40:06,523 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 16:40:06,523 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 16:40:06,524 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efee8c50-7475-4553-8e1b-cb3f63690804/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-12-13 16:40:06,546 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 16:40:06,546 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 16:40:06,547 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 16:40:06,547 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 16:40:06,548 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 16:40:06,548 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 16:40:06,548 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 16:40:06,549 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 16:40:06,549 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 16:40:06,549 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 16:40:06,549 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 16:40:06,550 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 16:40:06,550 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 16:40:06,550 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 16:40:06,550 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 16:40:06,550 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 16:40:06,551 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 16:40:06,551 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 16:40:06,551 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 16:40:06,551 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 16:40:06,551 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 16:40:06,551 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 16:40:06,552 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 16:40:06,552 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 16:40:06,552 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 16:40:06,552 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 16:40:06,553 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 16:40:06,553 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 16:40:06,553 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 16:40:06,553 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 16:40:06,553 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 16:40:06,553 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 16:40:06,554 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 16:40:06,554 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 16:40:06,554 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 16:40:06,554 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_efee8c50-7475-4553-8e1b-cb3f63690804/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efee8c50-7475-4553-8e1b-cb3f63690804/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8cf4f28b762443394edafed0f3ab08c0ba6ed0f26d824c46d396477f011c5356 [2022-12-13 16:40:06,714 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 16:40:06,730 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 16:40:06,732 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 16:40:06,733 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 16:40:06,734 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 16:40:06,735 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efee8c50-7475-4553-8e1b-cb3f63690804/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/eca-rers2012/Problem19_label46.c [2022-12-13 16:40:09,322 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 16:40:09,726 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 16:40:09,726 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efee8c50-7475-4553-8e1b-cb3f63690804/sv-benchmarks/c/eca-rers2012/Problem19_label46.c [2022-12-13 16:40:09,756 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efee8c50-7475-4553-8e1b-cb3f63690804/bin/uautomizer-uyxdKDjOR8/data/b30311930/fd8c7a9fc3e8400fba7c175bdb342832/FLAG589b4b811 [2022-12-13 16:40:09,767 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efee8c50-7475-4553-8e1b-cb3f63690804/bin/uautomizer-uyxdKDjOR8/data/b30311930/fd8c7a9fc3e8400fba7c175bdb342832 [2022-12-13 16:40:09,769 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 16:40:09,770 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 16:40:09,770 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 16:40:09,771 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 16:40:09,774 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 16:40:09,775 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 04:40:09" (1/1) ... [2022-12-13 16:40:09,776 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@64a5a386 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:40:09, skipping insertion in model container [2022-12-13 16:40:09,776 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 04:40:09" (1/1) ... [2022-12-13 16:40:09,783 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 16:40:09,923 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 16:40:10,126 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_efee8c50-7475-4553-8e1b-cb3f63690804/sv-benchmarks/c/eca-rers2012/Problem19_label46.c[4445,4458] [2022-12-13 16:40:11,193 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 16:40:11,202 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 16:40:11,218 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_efee8c50-7475-4553-8e1b-cb3f63690804/sv-benchmarks/c/eca-rers2012/Problem19_label46.c[4445,4458] [2022-12-13 16:40:11,917 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 16:40:11,940 INFO L208 MainTranslator]: Completed translation [2022-12-13 16:40:11,940 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:40:11 WrapperNode [2022-12-13 16:40:11,941 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 16:40:11,941 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 16:40:11,941 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 16:40:11,941 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 16:40:11,946 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:40:11" (1/1) ... [2022-12-13 16:40:12,016 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:40:11" (1/1) ... [2022-12-13 16:40:12,653 INFO L138 Inliner]: procedures = 19, calls = 13, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 9425 [2022-12-13 16:40:12,654 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 16:40:12,654 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 16:40:12,654 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 16:40:12,654 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 16:40:12,663 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:40:11" (1/1) ... [2022-12-13 16:40:12,663 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:40:11" (1/1) ... [2022-12-13 16:40:12,782 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:40:11" (1/1) ... [2022-12-13 16:40:12,782 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:40:11" (1/1) ... [2022-12-13 16:40:13,090 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:40:11" (1/1) ... [2022-12-13 16:40:13,123 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:40:11" (1/1) ... [2022-12-13 16:40:13,175 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:40:11" (1/1) ... [2022-12-13 16:40:13,192 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:40:11" (1/1) ... [2022-12-13 16:40:13,314 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 16:40:13,314 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 16:40:13,315 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 16:40:13,315 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 16:40:13,315 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:40:11" (1/1) ... [2022-12-13 16:40:13,319 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 16:40:13,327 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efee8c50-7475-4553-8e1b-cb3f63690804/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 16:40:13,337 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efee8c50-7475-4553-8e1b-cb3f63690804/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 16:40:13,338 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efee8c50-7475-4553-8e1b-cb3f63690804/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 16:40:13,368 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 16:40:13,368 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 16:40:13,368 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 16:40:13,368 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 16:40:13,442 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 16:40:13,443 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 16:40:20,063 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 16:40:20,092 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 16:40:20,092 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-12-13 16:40:20,095 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 04:40:20 BoogieIcfgContainer [2022-12-13 16:40:20,095 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 16:40:20,097 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 16:40:20,097 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 16:40:20,099 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 16:40:20,099 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 04:40:09" (1/3) ... [2022-12-13 16:40:20,100 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2371979e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 04:40:20, skipping insertion in model container [2022-12-13 16:40:20,100 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:40:11" (2/3) ... [2022-12-13 16:40:20,100 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2371979e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 04:40:20, skipping insertion in model container [2022-12-13 16:40:20,100 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 04:40:20" (3/3) ... [2022-12-13 16:40:20,101 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem19_label46.c [2022-12-13 16:40:20,115 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 16:40:20,115 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-13 16:40:20,175 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 16:40:20,180 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;@4c1c84ee, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 16:40:20,180 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-12-13 16:40:20,187 INFO L276 IsEmpty]: Start isEmpty. Operand has 1748 states, 1746 states have (on average 1.8699885452462772) internal successors, (3265), 1747 states have internal predecessors, (3265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:40:20,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-12-13 16:40:20,192 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 16:40:20,192 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] [2022-12-13 16:40:20,193 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 16:40:20,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:40:20,196 INFO L85 PathProgramCache]: Analyzing trace with hash -1317301102, now seen corresponding path program 1 times [2022-12-13 16:40:20,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:40:20,203 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [168673330] [2022-12-13 16:40:20,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:40:20,203 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:40:20,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:40:20,414 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 16:40:20,414 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:40:20,414 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [168673330] [2022-12-13 16:40:20,415 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [168673330] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:40:20,415 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:40:20,415 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 16:40:20,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [214357481] [2022-12-13 16:40:20,417 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:40:20,420 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 16:40:20,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:40:20,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 16:40:20,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 16:40:20,444 INFO L87 Difference]: Start difference. First operand has 1748 states, 1746 states have (on average 1.8699885452462772) internal successors, (3265), 1747 states have internal predecessors, (3265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 2 states have internal predecessors, (32), 0 states have call successors, (0), 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 16:40:26,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 16:40:26,701 INFO L93 Difference]: Finished difference Result 4957 states and 9398 transitions. [2022-12-13 16:40:26,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 16:40:26,703 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 2 states have internal predecessors, (32), 0 states have call successors, (0), 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 32 [2022-12-13 16:40:26,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 16:40:26,720 INFO L225 Difference]: With dead ends: 4957 [2022-12-13 16:40:26,720 INFO L226 Difference]: Without dead ends: 3129 [2022-12-13 16:40:26,725 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 16:40:26,727 INFO L413 NwaCegarLoop]: 1373 mSDtfsCounter, 1594 mSDsluCounter, 222 mSDsCounter, 0 mSdLazyCounter, 4344 mSolverCounterSat, 1517 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1594 SdHoareTripleChecker+Valid, 1595 SdHoareTripleChecker+Invalid, 5861 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1517 IncrementalHoareTripleChecker+Valid, 4344 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.1s IncrementalHoareTripleChecker+Time [2022-12-13 16:40:26,728 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1594 Valid, 1595 Invalid, 5861 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1517 Valid, 4344 Invalid, 0 Unknown, 0 Unchecked, 6.1s Time] [2022-12-13 16:40:26,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3129 states. [2022-12-13 16:40:26,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3129 to 3108. [2022-12-13 16:40:26,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3108 states, 3107 states have (on average 1.6012230447376892) internal successors, (4975), 3107 states have internal predecessors, (4975), 0 states have call successors, (0), 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 16:40:26,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3108 states to 3108 states and 4975 transitions. [2022-12-13 16:40:26,818 INFO L78 Accepts]: Start accepts. Automaton has 3108 states and 4975 transitions. Word has length 32 [2022-12-13 16:40:26,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 16:40:26,818 INFO L495 AbstractCegarLoop]: Abstraction has 3108 states and 4975 transitions. [2022-12-13 16:40:26,818 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 2 states have internal predecessors, (32), 0 states have call successors, (0), 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 16:40:26,818 INFO L276 IsEmpty]: Start isEmpty. Operand 3108 states and 4975 transitions. [2022-12-13 16:40:26,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-12-13 16:40:26,820 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 16:40:26,820 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:40:26,820 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 16:40:26,820 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 16:40:26,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:40:26,821 INFO L85 PathProgramCache]: Analyzing trace with hash -1370589736, now seen corresponding path program 1 times [2022-12-13 16:40:26,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:40:26,821 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1973017421] [2022-12-13 16:40:26,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:40:26,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:40:26,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:40:27,058 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:40:27,058 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:40:27,058 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1973017421] [2022-12-13 16:40:27,058 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1973017421] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:40:27,059 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:40:27,059 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 16:40:27,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1480655403] [2022-12-13 16:40:27,059 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:40:27,060 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 16:40:27,061 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:40:27,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 16:40:27,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 16:40:27,062 INFO L87 Difference]: Start difference. First operand 3108 states and 4975 transitions. Second operand has 4 states, 4 states have (on average 24.75) internal successors, (99), 3 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 16:40:36,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 16:40:36,888 INFO L93 Difference]: Finished difference Result 10359 states and 16187 transitions. [2022-12-13 16:40:36,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 16:40:36,888 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.75) internal successors, (99), 3 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 16:40:36,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 16:40:36,901 INFO L225 Difference]: With dead ends: 10359 [2022-12-13 16:40:36,901 INFO L226 Difference]: Without dead ends: 7253 [2022-12-13 16:40:36,903 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-13 16:40:36,904 INFO L413 NwaCegarLoop]: 1024 mSDtfsCounter, 4323 mSDsluCounter, 268 mSDsCounter, 0 mSdLazyCounter, 9504 mSolverCounterSat, 1498 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4323 SdHoareTripleChecker+Valid, 1292 SdHoareTripleChecker+Invalid, 11002 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1498 IncrementalHoareTripleChecker+Valid, 9504 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.6s IncrementalHoareTripleChecker+Time [2022-12-13 16:40:36,904 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4323 Valid, 1292 Invalid, 11002 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1498 Valid, 9504 Invalid, 0 Unknown, 0 Unchecked, 9.6s Time] [2022-12-13 16:40:36,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7253 states. [2022-12-13 16:40:36,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7253 to 7249. [2022-12-13 16:40:36,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7249 states, 7248 states have (on average 1.4503311258278146) internal successors, (10512), 7248 states have internal predecessors, (10512), 0 states have call successors, (0), 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 16:40:36,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7249 states to 7249 states and 10512 transitions. [2022-12-13 16:40:36,995 INFO L78 Accepts]: Start accepts. Automaton has 7249 states and 10512 transitions. Word has length 99 [2022-12-13 16:40:36,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 16:40:36,995 INFO L495 AbstractCegarLoop]: Abstraction has 7249 states and 10512 transitions. [2022-12-13 16:40:36,996 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.75) internal successors, (99), 3 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 16:40:36,996 INFO L276 IsEmpty]: Start isEmpty. Operand 7249 states and 10512 transitions. [2022-12-13 16:40:37,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 307 [2022-12-13 16:40:37,002 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 16:40:37,002 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-12-13 16:40:37,002 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-13 16:40:37,002 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 16:40:37,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:40:37,003 INFO L85 PathProgramCache]: Analyzing trace with hash -75059495, now seen corresponding path program 1 times [2022-12-13 16:40:37,003 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:40:37,003 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1725302977] [2022-12-13 16:40:37,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:40:37,003 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:40:37,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:40:37,658 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 93 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-12-13 16:40:37,659 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:40:37,659 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1725302977] [2022-12-13 16:40:37,659 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1725302977] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:40:37,659 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:40:37,659 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 16:40:37,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [565268515] [2022-12-13 16:40:37,660 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:40:37,660 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 16:40:37,661 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:40:37,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 16:40:37,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 16:40:37,661 INFO L87 Difference]: Start difference. First operand 7249 states and 10512 transitions. Second operand has 4 states, 4 states have (on average 69.25) internal successors, (277), 3 states have internal predecessors, (277), 0 states have call successors, (0), 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 16:40:46,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 16:40:46,361 INFO L93 Difference]: Finished difference Result 17269 states and 24867 transitions. [2022-12-13 16:40:46,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 16:40:46,362 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 69.25) internal successors, (277), 3 states have internal predecessors, (277), 0 states have call successors, (0), 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 306 [2022-12-13 16:40:46,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 16:40:46,379 INFO L225 Difference]: With dead ends: 17269 [2022-12-13 16:40:46,379 INFO L226 Difference]: Without dead ends: 11387 [2022-12-13 16:40:46,383 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-13 16:40:46,384 INFO L413 NwaCegarLoop]: 1803 mSDtfsCounter, 3756 mSDsluCounter, 354 mSDsCounter, 0 mSdLazyCounter, 9455 mSolverCounterSat, 430 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3756 SdHoareTripleChecker+Valid, 2157 SdHoareTripleChecker+Invalid, 9885 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 430 IncrementalHoareTripleChecker+Valid, 9455 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.5s IncrementalHoareTripleChecker+Time [2022-12-13 16:40:46,385 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3756 Valid, 2157 Invalid, 9885 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [430 Valid, 9455 Invalid, 0 Unknown, 0 Unchecked, 8.5s Time] [2022-12-13 16:40:46,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11387 states. [2022-12-13 16:40:46,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11387 to 11367. [2022-12-13 16:40:46,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11367 states, 11366 states have (on average 1.3286116487770543) internal successors, (15101), 11366 states have internal predecessors, (15101), 0 states have call successors, (0), 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 16:40:46,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11367 states to 11367 states and 15101 transitions. [2022-12-13 16:40:46,526 INFO L78 Accepts]: Start accepts. Automaton has 11367 states and 15101 transitions. Word has length 306 [2022-12-13 16:40:46,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 16:40:46,527 INFO L495 AbstractCegarLoop]: Abstraction has 11367 states and 15101 transitions. [2022-12-13 16:40:46,527 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 69.25) internal successors, (277), 3 states have internal predecessors, (277), 0 states have call successors, (0), 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 16:40:46,527 INFO L276 IsEmpty]: Start isEmpty. Operand 11367 states and 15101 transitions. [2022-12-13 16:40:46,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 335 [2022-12-13 16:40:46,529 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 16:40:46,530 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-12-13 16:40:46,530 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-13 16:40:46,530 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 16:40:46,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:40:46,530 INFO L85 PathProgramCache]: Analyzing trace with hash 1048910783, now seen corresponding path program 1 times [2022-12-13 16:40:46,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:40:46,531 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [932609448] [2022-12-13 16:40:46,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:40:46,531 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:40:46,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:40:46,954 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 119 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-13 16:40:46,954 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:40:46,954 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [932609448] [2022-12-13 16:40:46,954 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [932609448] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:40:46,955 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:40:46,955 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 16:40:46,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1275013361] [2022-12-13 16:40:46,955 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:40:46,956 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 16:40:46,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:40:46,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 16:40:46,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-13 16:40:46,957 INFO L87 Difference]: Start difference. First operand 11367 states and 15101 transitions. Second operand has 4 states, 4 states have (on average 82.75) internal successors, (331), 3 states have internal predecessors, (331), 0 states have call successors, (0), 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 16:40:53,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 16:40:53,725 INFO L93 Difference]: Finished difference Result 20033 states and 27483 transitions. [2022-12-13 16:40:53,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 16:40:53,725 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 82.75) internal successors, (331), 3 states have internal predecessors, (331), 0 states have call successors, (0), 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 334 [2022-12-13 16:40:53,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 16:40:53,744 INFO L225 Difference]: With dead ends: 20033 [2022-12-13 16:40:53,744 INFO L226 Difference]: Without dead ends: 11367 [2022-12-13 16:40:53,749 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 16:40:53,749 INFO L413 NwaCegarLoop]: 1775 mSDtfsCounter, 1138 mSDsluCounter, 342 mSDsCounter, 0 mSdLazyCounter, 7325 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1138 SdHoareTripleChecker+Valid, 2117 SdHoareTripleChecker+Invalid, 7333 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 7325 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.6s IncrementalHoareTripleChecker+Time [2022-12-13 16:40:53,750 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1138 Valid, 2117 Invalid, 7333 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 7325 Invalid, 0 Unknown, 0 Unchecked, 6.6s Time] [2022-12-13 16:40:53,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11367 states. [2022-12-13 16:40:53,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11367 to 11367. [2022-12-13 16:40:53,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11367 states, 11366 states have (on average 1.3274678866795706) internal successors, (15088), 11366 states have internal predecessors, (15088), 0 states have call successors, (0), 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 16:40:53,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11367 states to 11367 states and 15088 transitions. [2022-12-13 16:40:53,920 INFO L78 Accepts]: Start accepts. Automaton has 11367 states and 15088 transitions. Word has length 334 [2022-12-13 16:40:53,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 16:40:53,921 INFO L495 AbstractCegarLoop]: Abstraction has 11367 states and 15088 transitions. [2022-12-13 16:40:53,921 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 82.75) internal successors, (331), 3 states have internal predecessors, (331), 0 states have call successors, (0), 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 16:40:53,921 INFO L276 IsEmpty]: Start isEmpty. Operand 11367 states and 15088 transitions. [2022-12-13 16:40:53,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 520 [2022-12-13 16:40:53,929 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 16:40:53,929 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:40:53,929 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-13 16:40:53,929 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 16:40:53,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:40:53,930 INFO L85 PathProgramCache]: Analyzing trace with hash -201289596, now seen corresponding path program 1 times [2022-12-13 16:40:53,930 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:40:53,930 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1876713891] [2022-12-13 16:40:53,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:40:53,931 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:40:54,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:40:54,301 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:40:54,301 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:40:54,301 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1876713891] [2022-12-13 16:40:54,302 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1876713891] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:40:54,302 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:40:54,302 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 16:40:54,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [906456375] [2022-12-13 16:40:54,302 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:40:54,303 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 16:40:54,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:40:54,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 16:40:54,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 16:40:54,305 INFO L87 Difference]: Start difference. First operand 11367 states and 15088 transitions. Second operand has 3 states, 3 states have (on average 173.0) internal successors, (519), 3 states have internal predecessors, (519), 0 states have call successors, (0), 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 16:40:59,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 16:40:59,790 INFO L93 Difference]: Finished difference Result 25557 states and 36131 transitions. [2022-12-13 16:40:59,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 16:40:59,791 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 173.0) internal successors, (519), 3 states have internal predecessors, (519), 0 states have call successors, (0), 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 519 [2022-12-13 16:40:59,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 16:40:59,817 INFO L225 Difference]: With dead ends: 25557 [2022-12-13 16:40:59,817 INFO L226 Difference]: Without dead ends: 16922 [2022-12-13 16:40:59,825 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 16:40:59,826 INFO L413 NwaCegarLoop]: 2759 mSDtfsCounter, 1489 mSDsluCounter, 177 mSDsCounter, 0 mSdLazyCounter, 4068 mSolverCounterSat, 1816 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1489 SdHoareTripleChecker+Valid, 2936 SdHoareTripleChecker+Invalid, 5884 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1816 IncrementalHoareTripleChecker+Valid, 4068 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2022-12-13 16:40:59,826 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1489 Valid, 2936 Invalid, 5884 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1816 Valid, 4068 Invalid, 0 Unknown, 0 Unchecked, 5.3s Time] [2022-12-13 16:40:59,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16922 states. [2022-12-13 16:40:59,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16922 to 16876. [2022-12-13 16:40:59,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16876 states, 16875 states have (on average 1.2959407407407408) internal successors, (21869), 16875 states have internal predecessors, (21869), 0 states have call successors, (0), 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 16:40:59,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16876 states to 16876 states and 21869 transitions. [2022-12-13 16:40:59,998 INFO L78 Accepts]: Start accepts. Automaton has 16876 states and 21869 transitions. Word has length 519 [2022-12-13 16:40:59,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 16:40:59,999 INFO L495 AbstractCegarLoop]: Abstraction has 16876 states and 21869 transitions. [2022-12-13 16:40:59,999 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 173.0) internal successors, (519), 3 states have internal predecessors, (519), 0 states have call successors, (0), 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 16:40:59,999 INFO L276 IsEmpty]: Start isEmpty. Operand 16876 states and 21869 transitions. [2022-12-13 16:41:00,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 589 [2022-12-13 16:41:00,006 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 16:41:00,007 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:41:00,007 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-13 16:41:00,007 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 16:41:00,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:41:00,008 INFO L85 PathProgramCache]: Analyzing trace with hash 1471545464, now seen corresponding path program 1 times [2022-12-13 16:41:00,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:41:00,008 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1231123370] [2022-12-13 16:41:00,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:41:00,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:41:00,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:41:00,629 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 81 proven. 44 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:41:00,629 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:41:00,629 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1231123370] [2022-12-13 16:41:00,629 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1231123370] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 16:41:00,629 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [355561054] [2022-12-13 16:41:00,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:41:00,630 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 16:41:00,630 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efee8c50-7475-4553-8e1b-cb3f63690804/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 16:41:00,631 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efee8c50-7475-4553-8e1b-cb3f63690804/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 16:41:00,632 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efee8c50-7475-4553-8e1b-cb3f63690804/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-13 16:41:00,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:41:00,859 INFO L263 TraceCheckSpWp]: Trace formula consists of 709 conjuncts, 2 conjunts are in the unsatisfiable core [2022-12-13 16:41:00,870 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 16:41:00,971 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 125 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:41:00,971 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 16:41:00,971 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [355561054] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:41:00,971 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 16:41:00,971 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2022-12-13 16:41:00,971 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2104404304] [2022-12-13 16:41:00,971 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:41:00,972 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 16:41:00,972 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:41:00,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 16:41:00,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-12-13 16:41:00,973 INFO L87 Difference]: Start difference. First operand 16876 states and 21869 transitions. Second operand has 3 states, 3 states have (on average 196.0) internal successors, (588), 3 states have internal predecessors, (588), 0 states have call successors, (0), 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 16:41:06,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 16:41:06,914 INFO L93 Difference]: Finished difference Result 43303 states and 57896 transitions. [2022-12-13 16:41:06,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 16:41:06,915 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 196.0) internal successors, (588), 3 states have internal predecessors, (588), 0 states have call successors, (0), 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 588 [2022-12-13 16:41:06,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 16:41:06,946 INFO L225 Difference]: With dead ends: 43303 [2022-12-13 16:41:06,946 INFO L226 Difference]: Without dead ends: 29159 [2022-12-13 16:41:06,956 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 591 GetRequests, 587 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-12-13 16:41:06,956 INFO L413 NwaCegarLoop]: 707 mSDtfsCounter, 2533 mSDsluCounter, 109 mSDsCounter, 0 mSdLazyCounter, 4054 mSolverCounterSat, 1472 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2533 SdHoareTripleChecker+Valid, 816 SdHoareTripleChecker+Invalid, 5526 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1472 IncrementalHoareTripleChecker+Valid, 4054 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.8s IncrementalHoareTripleChecker+Time [2022-12-13 16:41:06,956 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2533 Valid, 816 Invalid, 5526 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1472 Valid, 4054 Invalid, 0 Unknown, 0 Unchecked, 5.8s Time] [2022-12-13 16:41:06,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29159 states. [2022-12-13 16:41:07,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29159 to 29155. [2022-12-13 16:41:07,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29155 states, 29154 states have (on average 1.297592097139329) internal successors, (37830), 29154 states have internal predecessors, (37830), 0 states have call successors, (0), 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 16:41:07,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29155 states to 29155 states and 37830 transitions. [2022-12-13 16:41:07,235 INFO L78 Accepts]: Start accepts. Automaton has 29155 states and 37830 transitions. Word has length 588 [2022-12-13 16:41:07,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 16:41:07,236 INFO L495 AbstractCegarLoop]: Abstraction has 29155 states and 37830 transitions. [2022-12-13 16:41:07,236 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 196.0) internal successors, (588), 3 states have internal predecessors, (588), 0 states have call successors, (0), 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 16:41:07,236 INFO L276 IsEmpty]: Start isEmpty. Operand 29155 states and 37830 transitions. [2022-12-13 16:41:07,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 642 [2022-12-13 16:41:07,245 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 16:41:07,246 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:41:07,253 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efee8c50-7475-4553-8e1b-cb3f63690804/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-13 16:41:07,446 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efee8c50-7475-4553-8e1b-cb3f63690804/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 16:41:07,447 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 16:41:07,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:41:07,448 INFO L85 PathProgramCache]: Analyzing trace with hash -1541118034, now seen corresponding path program 1 times [2022-12-13 16:41:07,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:41:07,448 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1110565688] [2022-12-13 16:41:07,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:41:07,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:41:07,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:41:08,266 INFO L134 CoverageAnalysis]: Checked inductivity of 178 backedges. 59 proven. 40 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2022-12-13 16:41:08,266 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:41:08,266 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1110565688] [2022-12-13 16:41:08,266 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1110565688] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 16:41:08,267 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [388753721] [2022-12-13 16:41:08,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:41:08,267 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 16:41:08,267 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efee8c50-7475-4553-8e1b-cb3f63690804/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 16:41:08,268 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efee8c50-7475-4553-8e1b-cb3f63690804/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 16:41:08,268 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efee8c50-7475-4553-8e1b-cb3f63690804/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-13 16:41:08,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:41:08,457 INFO L263 TraceCheckSpWp]: Trace formula consists of 757 conjuncts, 2 conjunts are in the unsatisfiable core [2022-12-13 16:41:08,463 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 16:41:08,586 INFO L134 CoverageAnalysis]: Checked inductivity of 178 backedges. 178 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:41:08,586 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 16:41:08,587 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [388753721] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:41:08,587 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 16:41:08,587 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2022-12-13 16:41:08,587 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1725288232] [2022-12-13 16:41:08,587 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:41:08,588 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 16:41:08,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:41:08,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 16:41:08,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-12-13 16:41:08,589 INFO L87 Difference]: Start difference. First operand 29155 states and 37830 transitions. Second operand has 3 states, 3 states have (on average 213.66666666666666) internal successors, (641), 3 states have internal predecessors, (641), 0 states have call successors, (0), 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 16:41:14,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 16:41:14,495 INFO L93 Difference]: Finished difference Result 77415 states and 102356 transitions. [2022-12-13 16:41:14,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 16:41:14,496 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 213.66666666666666) internal successors, (641), 3 states have internal predecessors, (641), 0 states have call successors, (0), 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 641 [2022-12-13 16:41:14,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 16:41:14,543 INFO L225 Difference]: With dead ends: 77415 [2022-12-13 16:41:14,543 INFO L226 Difference]: Without dead ends: 50992 [2022-12-13 16:41:14,562 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 644 GetRequests, 640 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-12-13 16:41:14,563 INFO L413 NwaCegarLoop]: 1541 mSDtfsCounter, 1544 mSDsluCounter, 135 mSDsCounter, 0 mSdLazyCounter, 3903 mSolverCounterSat, 1728 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1544 SdHoareTripleChecker+Valid, 1676 SdHoareTripleChecker+Invalid, 5631 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1728 IncrementalHoareTripleChecker+Valid, 3903 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.7s IncrementalHoareTripleChecker+Time [2022-12-13 16:41:14,563 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1544 Valid, 1676 Invalid, 5631 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1728 Valid, 3903 Invalid, 0 Unknown, 0 Unchecked, 5.7s Time] [2022-12-13 16:41:14,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50992 states. [2022-12-13 16:41:14,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50992 to 46896. [2022-12-13 16:41:14,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46896 states, 46895 states have (on average 1.2159505277748162) internal successors, (57022), 46895 states have internal predecessors, (57022), 0 states have call successors, (0), 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 16:41:14,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46896 states to 46896 states and 57022 transitions. [2022-12-13 16:41:14,973 INFO L78 Accepts]: Start accepts. Automaton has 46896 states and 57022 transitions. Word has length 641 [2022-12-13 16:41:14,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 16:41:14,973 INFO L495 AbstractCegarLoop]: Abstraction has 46896 states and 57022 transitions. [2022-12-13 16:41:14,973 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 213.66666666666666) internal successors, (641), 3 states have internal predecessors, (641), 0 states have call successors, (0), 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 16:41:14,974 INFO L276 IsEmpty]: Start isEmpty. Operand 46896 states and 57022 transitions. [2022-12-13 16:41:14,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 732 [2022-12-13 16:41:14,977 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 16:41:14,978 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-12-13 16:41:14,982 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efee8c50-7475-4553-8e1b-cb3f63690804/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-13 16:41:15,178 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efee8c50-7475-4553-8e1b-cb3f63690804/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-12-13 16:41:15,180 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 16:41:15,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:41:15,181 INFO L85 PathProgramCache]: Analyzing trace with hash -589989668, now seen corresponding path program 1 times [2022-12-13 16:41:15,182 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:41:15,182 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [889404612] [2022-12-13 16:41:15,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:41:15,183 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:41:15,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:41:15,512 INFO L134 CoverageAnalysis]: Checked inductivity of 268 backedges. 59 proven. 0 refuted. 0 times theorem prover too weak. 209 trivial. 0 not checked. [2022-12-13 16:41:15,512 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:41:15,512 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [889404612] [2022-12-13 16:41:15,513 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [889404612] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:41:15,513 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:41:15,513 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 16:41:15,513 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [426874300] [2022-12-13 16:41:15,513 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:41:15,514 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 16:41:15,514 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:41:15,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 16:41:15,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 16:41:15,515 INFO L87 Difference]: Start difference. First operand 46896 states and 57022 transitions. Second operand has 3 states, 3 states have (on average 174.33333333333334) internal successors, (523), 3 states have internal predecessors, (523), 0 states have call successors, (0), 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 16:41:21,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 16:41:21,732 INFO L93 Difference]: Finished difference Result 108820 states and 133070 transitions. [2022-12-13 16:41:21,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 16:41:21,733 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 174.33333333333334) internal successors, (523), 3 states have internal predecessors, (523), 0 states have call successors, (0), 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 731 [2022-12-13 16:41:21,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 16:41:21,795 INFO L225 Difference]: With dead ends: 108820 [2022-12-13 16:41:21,795 INFO L226 Difference]: Without dead ends: 64656 [2022-12-13 16:41:21,819 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 16:41:21,820 INFO L413 NwaCegarLoop]: 3065 mSDtfsCounter, 1379 mSDsluCounter, 186 mSDsCounter, 0 mSdLazyCounter, 4589 mSolverCounterSat, 915 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1379 SdHoareTripleChecker+Valid, 3251 SdHoareTripleChecker+Invalid, 5504 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 915 IncrementalHoareTripleChecker+Valid, 4589 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.9s IncrementalHoareTripleChecker+Time [2022-12-13 16:41:21,820 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1379 Valid, 3251 Invalid, 5504 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [915 Valid, 4589 Invalid, 0 Unknown, 0 Unchecked, 5.9s Time] [2022-12-13 16:41:21,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64656 states. [2022-12-13 16:41:22,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64656 to 56459. [2022-12-13 16:41:22,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56459 states, 56458 states have (on average 1.190566438768642) internal successors, (67217), 56458 states have internal predecessors, (67217), 0 states have call successors, (0), 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 16:41:22,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56459 states to 56459 states and 67217 transitions. [2022-12-13 16:41:22,381 INFO L78 Accepts]: Start accepts. Automaton has 56459 states and 67217 transitions. Word has length 731 [2022-12-13 16:41:22,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 16:41:22,381 INFO L495 AbstractCegarLoop]: Abstraction has 56459 states and 67217 transitions. [2022-12-13 16:41:22,381 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 174.33333333333334) internal successors, (523), 3 states have internal predecessors, (523), 0 states have call successors, (0), 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 16:41:22,382 INFO L276 IsEmpty]: Start isEmpty. Operand 56459 states and 67217 transitions. [2022-12-13 16:41:22,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 739 [2022-12-13 16:41:22,386 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 16:41:22,386 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-12-13 16:41:22,386 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-13 16:41:22,387 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 16:41:22,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:41:22,387 INFO L85 PathProgramCache]: Analyzing trace with hash -2012860575, now seen corresponding path program 1 times [2022-12-13 16:41:22,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:41:22,387 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1787204025] [2022-12-13 16:41:22,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:41:22,387 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:41:22,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:41:23,796 INFO L134 CoverageAnalysis]: Checked inductivity of 277 backedges. 59 proven. 218 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:41:23,796 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:41:23,796 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1787204025] [2022-12-13 16:41:23,796 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1787204025] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 16:41:23,796 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2110283942] [2022-12-13 16:41:23,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:41:23,796 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 16:41:23,797 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efee8c50-7475-4553-8e1b-cb3f63690804/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 16:41:23,797 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efee8c50-7475-4553-8e1b-cb3f63690804/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 16:41:23,798 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efee8c50-7475-4553-8e1b-cb3f63690804/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-13 16:41:23,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:41:23,976 INFO L263 TraceCheckSpWp]: Trace formula consists of 854 conjuncts, 2 conjunts are in the unsatisfiable core [2022-12-13 16:41:23,981 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 16:41:24,027 INFO L134 CoverageAnalysis]: Checked inductivity of 277 backedges. 59 proven. 0 refuted. 0 times theorem prover too weak. 218 trivial. 0 not checked. [2022-12-13 16:41:24,027 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 16:41:24,027 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2110283942] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:41:24,027 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 16:41:24,027 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 8 [2022-12-13 16:41:24,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [287778769] [2022-12-13 16:41:24,028 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:41:24,028 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 16:41:24,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:41:24,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 16:41:24,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-12-13 16:41:24,029 INFO L87 Difference]: Start difference. First operand 56459 states and 67217 transitions. Second operand has 3 states, 3 states have (on average 173.66666666666666) internal successors, (521), 3 states have internal predecessors, (521), 0 states have call successors, (0), 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 16:41:30,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 16:41:30,905 INFO L93 Difference]: Finished difference Result 138928 states and 167694 transitions. [2022-12-13 16:41:30,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 16:41:30,906 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 173.66666666666666) internal successors, (521), 3 states have internal predecessors, (521), 0 states have call successors, (0), 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 738 [2022-12-13 16:41:30,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 16:41:30,975 INFO L225 Difference]: With dead ends: 138928 [2022-12-13 16:41:30,975 INFO L226 Difference]: Without dead ends: 85201 [2022-12-13 16:41:30,991 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 743 GetRequests, 737 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-12-13 16:41:30,991 INFO L413 NwaCegarLoop]: 3075 mSDtfsCounter, 1447 mSDsluCounter, 171 mSDsCounter, 0 mSdLazyCounter, 4993 mSolverCounterSat, 990 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1447 SdHoareTripleChecker+Valid, 3246 SdHoareTripleChecker+Invalid, 5983 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 990 IncrementalHoareTripleChecker+Valid, 4993 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.5s IncrementalHoareTripleChecker+Time [2022-12-13 16:41:30,991 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1447 Valid, 3246 Invalid, 5983 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [990 Valid, 4993 Invalid, 0 Unknown, 0 Unchecked, 6.5s Time] [2022-12-13 16:41:31,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85201 states. [2022-12-13 16:41:31,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85201 to 85137. [2022-12-13 16:41:31,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85137 states, 85136 states have (on average 1.1609424920127795) internal successors, (98838), 85136 states have internal predecessors, (98838), 0 states have call successors, (0), 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 16:41:31,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85137 states to 85137 states and 98838 transitions. [2022-12-13 16:41:31,712 INFO L78 Accepts]: Start accepts. Automaton has 85137 states and 98838 transitions. Word has length 738 [2022-12-13 16:41:31,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 16:41:31,713 INFO L495 AbstractCegarLoop]: Abstraction has 85137 states and 98838 transitions. [2022-12-13 16:41:31,713 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 173.66666666666666) internal successors, (521), 3 states have internal predecessors, (521), 0 states have call successors, (0), 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 16:41:31,713 INFO L276 IsEmpty]: Start isEmpty. Operand 85137 states and 98838 transitions. [2022-12-13 16:41:31,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 826 [2022-12-13 16:41:31,718 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 16:41:31,719 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:41:31,724 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efee8c50-7475-4553-8e1b-cb3f63690804/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-12-13 16:41:31,919 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efee8c50-7475-4553-8e1b-cb3f63690804/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 16:41:31,921 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 16:41:31,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:41:31,922 INFO L85 PathProgramCache]: Analyzing trace with hash 92865929, now seen corresponding path program 1 times [2022-12-13 16:41:31,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:41:31,923 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [207941797] [2022-12-13 16:41:31,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:41:31,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:41:32,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:41:32,323 INFO L134 CoverageAnalysis]: Checked inductivity of 485 backedges. 89 proven. 0 refuted. 0 times theorem prover too weak. 396 trivial. 0 not checked. [2022-12-13 16:41:32,323 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:41:32,323 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [207941797] [2022-12-13 16:41:32,323 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [207941797] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:41:32,323 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:41:32,323 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 16:41:32,323 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [460415930] [2022-12-13 16:41:32,323 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:41:32,324 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 16:41:32,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:41:32,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 16:41:32,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 16:41:32,325 INFO L87 Difference]: Start difference. First operand 85137 states and 98838 transitions. Second operand has 3 states, 3 states have (on average 174.66666666666666) internal successors, (524), 3 states have internal predecessors, (524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:41:39,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 16:41:39,066 INFO L93 Difference]: Finished difference Result 193497 states and 228460 transitions. [2022-12-13 16:41:39,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 16:41:39,067 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 174.66666666666666) internal successors, (524), 3 states have internal predecessors, (524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 825 [2022-12-13 16:41:39,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 16:41:39,173 INFO L225 Difference]: With dead ends: 193497 [2022-12-13 16:41:39,173 INFO L226 Difference]: Without dead ends: 111092 [2022-12-13 16:41:39,197 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 16:41:39,197 INFO L413 NwaCegarLoop]: 1473 mSDtfsCounter, 1521 mSDsluCounter, 188 mSDsCounter, 0 mSdLazyCounter, 4024 mSolverCounterSat, 1697 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1521 SdHoareTripleChecker+Valid, 1661 SdHoareTripleChecker+Invalid, 5721 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1697 IncrementalHoareTripleChecker+Valid, 4024 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.2s IncrementalHoareTripleChecker+Time [2022-12-13 16:41:39,198 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1521 Valid, 1661 Invalid, 5721 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1697 Valid, 4024 Invalid, 0 Unknown, 0 Unchecked, 6.2s Time] [2022-12-13 16:41:39,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111092 states. [2022-12-13 16:41:39,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111092 to 86455. [2022-12-13 16:41:39,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86455 states, 86454 states have (on average 1.1588243458949268) internal successors, (100185), 86454 states have internal predecessors, (100185), 0 states have call successors, (0), 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 16:41:40,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86455 states to 86455 states and 100185 transitions. [2022-12-13 16:41:40,089 INFO L78 Accepts]: Start accepts. Automaton has 86455 states and 100185 transitions. Word has length 825 [2022-12-13 16:41:40,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 16:41:40,089 INFO L495 AbstractCegarLoop]: Abstraction has 86455 states and 100185 transitions. [2022-12-13 16:41:40,089 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 174.66666666666666) internal successors, (524), 3 states have internal predecessors, (524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:41:40,089 INFO L276 IsEmpty]: Start isEmpty. Operand 86455 states and 100185 transitions. [2022-12-13 16:41:40,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 892 [2022-12-13 16:41:40,095 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 16:41:40,096 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:41:40,096 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-12-13 16:41:40,096 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 16:41:40,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:41:40,096 INFO L85 PathProgramCache]: Analyzing trace with hash 620840207, now seen corresponding path program 1 times [2022-12-13 16:41:40,096 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:41:40,096 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [356165387] [2022-12-13 16:41:40,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:41:40,096 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:41:40,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:41:41,235 INFO L134 CoverageAnalysis]: Checked inductivity of 617 backedges. 408 proven. 0 refuted. 0 times theorem prover too weak. 209 trivial. 0 not checked. [2022-12-13 16:41:41,236 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:41:41,236 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [356165387] [2022-12-13 16:41:41,236 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [356165387] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:41:41,236 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:41:41,236 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 16:41:41,236 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1370972666] [2022-12-13 16:41:41,236 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:41:41,237 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 16:41:41,237 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:41:41,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 16:41:41,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 16:41:41,239 INFO L87 Difference]: Start difference. First operand 86455 states and 100185 transitions. Second operand has 3 states, 3 states have (on average 227.66666666666666) internal successors, (683), 3 states have internal predecessors, (683), 0 states have call successors, (0), 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 16:41:47,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 16:41:47,319 INFO L93 Difference]: Finished difference Result 170228 states and 197709 transitions. [2022-12-13 16:41:47,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 16:41:47,319 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 227.66666666666666) internal successors, (683), 3 states have internal predecessors, (683), 0 states have call successors, (0), 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 891 [2022-12-13 16:41:47,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 16:41:47,397 INFO L225 Difference]: With dead ends: 170228 [2022-12-13 16:41:47,397 INFO L226 Difference]: Without dead ends: 86505 [2022-12-13 16:41:47,429 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 16:41:47,429 INFO L413 NwaCegarLoop]: 525 mSDtfsCounter, 1592 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 4229 mSolverCounterSat, 1555 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1592 SdHoareTripleChecker+Valid, 576 SdHoareTripleChecker+Invalid, 5784 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1555 IncrementalHoareTripleChecker+Valid, 4229 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.6s IncrementalHoareTripleChecker+Time [2022-12-13 16:41:47,430 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1592 Valid, 576 Invalid, 5784 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1555 Valid, 4229 Invalid, 0 Unknown, 0 Unchecked, 5.6s Time] [2022-12-13 16:41:47,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86505 states. [2022-12-13 16:41:48,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86505 to 86450. [2022-12-13 16:41:48,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86450 states, 86449 states have (on average 1.1542643639602541) internal successors, (99785), 86449 states have internal predecessors, (99785), 0 states have call successors, (0), 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 16:41:48,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86450 states to 86450 states and 99785 transitions. [2022-12-13 16:41:48,192 INFO L78 Accepts]: Start accepts. Automaton has 86450 states and 99785 transitions. Word has length 891 [2022-12-13 16:41:48,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 16:41:48,193 INFO L495 AbstractCegarLoop]: Abstraction has 86450 states and 99785 transitions. [2022-12-13 16:41:48,193 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 227.66666666666666) internal successors, (683), 3 states have internal predecessors, (683), 0 states have call successors, (0), 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 16:41:48,193 INFO L276 IsEmpty]: Start isEmpty. Operand 86450 states and 99785 transitions. [2022-12-13 16:41:48,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 893 [2022-12-13 16:41:48,200 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 16:41:48,200 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-12-13 16:41:48,200 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-12-13 16:41:48,200 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 16:41:48,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:41:48,201 INFO L85 PathProgramCache]: Analyzing trace with hash -1213627007, now seen corresponding path program 1 times [2022-12-13 16:41:48,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:41:48,201 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1856798613] [2022-12-13 16:41:48,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:41:48,201 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:41:48,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:41:49,594 INFO L134 CoverageAnalysis]: Checked inductivity of 709 backedges. 190 proven. 395 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2022-12-13 16:41:49,594 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:41:49,594 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1856798613] [2022-12-13 16:41:49,594 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1856798613] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 16:41:49,594 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1282542339] [2022-12-13 16:41:49,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:41:49,595 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 16:41:49,595 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efee8c50-7475-4553-8e1b-cb3f63690804/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 16:41:49,596 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efee8c50-7475-4553-8e1b-cb3f63690804/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 16:41:49,597 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efee8c50-7475-4553-8e1b-cb3f63690804/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-13 16:41:49,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:41:49,847 INFO L263 TraceCheckSpWp]: Trace formula consists of 1062 conjuncts, 2 conjunts are in the unsatisfiable core [2022-12-13 16:41:49,854 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 16:41:49,970 INFO L134 CoverageAnalysis]: Checked inductivity of 709 backedges. 283 proven. 0 refuted. 0 times theorem prover too weak. 426 trivial. 0 not checked. [2022-12-13 16:41:49,970 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 16:41:49,971 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1282542339] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:41:49,971 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 16:41:49,971 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2022-12-13 16:41:49,971 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [897064378] [2022-12-13 16:41:49,971 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:41:49,972 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 16:41:49,972 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:41:49,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 16:41:49,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-12-13 16:41:49,973 INFO L87 Difference]: Start difference. First operand 86450 states and 99785 transitions. Second operand has 3 states, 3 states have (on average 187.33333333333334) internal successors, (562), 3 states have internal predecessors, (562), 0 states have call successors, (0), 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 16:41:55,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 16:41:55,842 INFO L93 Difference]: Finished difference Result 193455 states and 225614 transitions. [2022-12-13 16:41:55,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 16:41:55,844 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 187.33333333333334) internal successors, (562), 3 states have internal predecessors, (562), 0 states have call successors, (0), 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 892 [2022-12-13 16:41:55,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 16:41:55,945 INFO L225 Difference]: With dead ends: 193455 [2022-12-13 16:41:55,945 INFO L226 Difference]: Without dead ends: 109737 [2022-12-13 16:41:55,972 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 896 GetRequests, 893 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-12-13 16:41:55,972 INFO L413 NwaCegarLoop]: 1078 mSDtfsCounter, 1551 mSDsluCounter, 120 mSDsCounter, 0 mSdLazyCounter, 4146 mSolverCounterSat, 1814 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1551 SdHoareTripleChecker+Valid, 1198 SdHoareTripleChecker+Invalid, 5960 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1814 IncrementalHoareTripleChecker+Valid, 4146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.4s IncrementalHoareTripleChecker+Time [2022-12-13 16:41:55,972 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1551 Valid, 1198 Invalid, 5960 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1814 Valid, 4146 Invalid, 0 Unknown, 0 Unchecked, 5.4s Time] [2022-12-13 16:41:56,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109737 states. [2022-12-13 16:41:56,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109737 to 109655. [2022-12-13 16:41:56,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109655 states, 109654 states have (on average 1.1543217757674138) internal successors, (126576), 109654 states have internal predecessors, (126576), 0 states have call successors, (0), 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 16:41:56,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109655 states to 109655 states and 126576 transitions. [2022-12-13 16:41:56,963 INFO L78 Accepts]: Start accepts. Automaton has 109655 states and 126576 transitions. Word has length 892 [2022-12-13 16:41:56,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 16:41:56,964 INFO L495 AbstractCegarLoop]: Abstraction has 109655 states and 126576 transitions. [2022-12-13 16:41:56,964 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 187.33333333333334) internal successors, (562), 3 states have internal predecessors, (562), 0 states have call successors, (0), 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 16:41:56,964 INFO L276 IsEmpty]: Start isEmpty. Operand 109655 states and 126576 transitions. [2022-12-13 16:41:57,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 899 [2022-12-13 16:41:57,060 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 16:41:57,060 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:41:57,067 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efee8c50-7475-4553-8e1b-cb3f63690804/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-12-13 16:41:57,261 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efee8c50-7475-4553-8e1b-cb3f63690804/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 16:41:57,263 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 16:41:57,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:41:57,264 INFO L85 PathProgramCache]: Analyzing trace with hash 1795250068, now seen corresponding path program 1 times [2022-12-13 16:41:57,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:41:57,265 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1798619986] [2022-12-13 16:41:57,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:41:57,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:41:57,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:41:59,166 INFO L134 CoverageAnalysis]: Checked inductivity of 626 backedges. 378 proven. 218 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-12-13 16:41:59,166 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:41:59,167 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1798619986] [2022-12-13 16:41:59,167 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1798619986] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 16:41:59,167 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [446738962] [2022-12-13 16:41:59,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:41:59,167 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 16:41:59,167 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efee8c50-7475-4553-8e1b-cb3f63690804/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 16:41:59,168 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efee8c50-7475-4553-8e1b-cb3f63690804/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 16:41:59,169 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efee8c50-7475-4553-8e1b-cb3f63690804/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-13 16:41:59,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:41:59,407 INFO L263 TraceCheckSpWp]: Trace formula consists of 1042 conjuncts, 2 conjunts are in the unsatisfiable core [2022-12-13 16:41:59,412 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 16:41:59,537 INFO L134 CoverageAnalysis]: Checked inductivity of 626 backedges. 408 proven. 0 refuted. 0 times theorem prover too weak. 218 trivial. 0 not checked. [2022-12-13 16:41:59,537 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 16:41:59,537 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [446738962] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:41:59,537 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 16:41:59,538 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 8 [2022-12-13 16:41:59,538 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [139110172] [2022-12-13 16:41:59,538 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:41:59,538 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 16:41:59,538 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:41:59,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 16:41:59,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-12-13 16:41:59,539 INFO L87 Difference]: Start difference. First operand 109655 states and 126576 transitions. Second operand has 3 states, 3 states have (on average 227.0) internal successors, (681), 3 states have internal predecessors, (681), 0 states have call successors, (0), 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 16:42:06,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 16:42:06,072 INFO L93 Difference]: Finished difference Result 256160 states and 296523 transitions. [2022-12-13 16:42:06,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 16:42:06,073 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 227.0) internal successors, (681), 3 states have internal predecessors, (681), 0 states have call successors, (0), 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 898 [2022-12-13 16:42:06,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 16:42:06,218 INFO L225 Difference]: With dead ends: 256160 [2022-12-13 16:42:06,218 INFO L226 Difference]: Without dead ends: 145141 [2022-12-13 16:42:06,270 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 903 GetRequests, 897 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-12-13 16:42:06,270 INFO L413 NwaCegarLoop]: 2498 mSDtfsCounter, 1579 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 3770 mSolverCounterSat, 1876 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1579 SdHoareTripleChecker+Valid, 2577 SdHoareTripleChecker+Invalid, 5646 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1876 IncrementalHoareTripleChecker+Valid, 3770 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.8s IncrementalHoareTripleChecker+Time [2022-12-13 16:42:06,271 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1579 Valid, 2577 Invalid, 5646 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1876 Valid, 3770 Invalid, 0 Unknown, 0 Unchecked, 5.8s Time] [2022-12-13 16:42:06,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145141 states. [2022-12-13 16:42:07,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145141 to 138309. [2022-12-13 16:42:07,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138309 states, 138308 states have (on average 1.1158429013506088) internal successors, (154330), 138308 states have internal predecessors, (154330), 0 states have call successors, (0), 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 16:42:07,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138309 states to 138309 states and 154330 transitions. [2022-12-13 16:42:07,602 INFO L78 Accepts]: Start accepts. Automaton has 138309 states and 154330 transitions. Word has length 898 [2022-12-13 16:42:07,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 16:42:07,603 INFO L495 AbstractCegarLoop]: Abstraction has 138309 states and 154330 transitions. [2022-12-13 16:42:07,603 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 227.0) internal successors, (681), 3 states have internal predecessors, (681), 0 states have call successors, (0), 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 16:42:07,603 INFO L276 IsEmpty]: Start isEmpty. Operand 138309 states and 154330 transitions. [2022-12-13 16:42:07,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 991 [2022-12-13 16:42:07,611 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 16:42:07,611 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-12-13 16:42:07,616 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efee8c50-7475-4553-8e1b-cb3f63690804/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-12-13 16:42:07,812 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efee8c50-7475-4553-8e1b-cb3f63690804/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-12-13 16:42:07,813 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 16:42:07,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:42:07,816 INFO L85 PathProgramCache]: Analyzing trace with hash -201804526, now seen corresponding path program 1 times [2022-12-13 16:42:07,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:42:07,817 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1684898995] [2022-12-13 16:42:07,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:42:07,818 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:42:07,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:42:08,421 INFO L134 CoverageAnalysis]: Checked inductivity of 929 backedges. 690 proven. 0 refuted. 0 times theorem prover too weak. 239 trivial. 0 not checked. [2022-12-13 16:42:08,421 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:42:08,421 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1684898995] [2022-12-13 16:42:08,421 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1684898995] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:42:08,421 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:42:08,421 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 16:42:08,421 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1827404357] [2022-12-13 16:42:08,422 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:42:08,423 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 16:42:08,423 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:42:08,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 16:42:08,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-13 16:42:08,424 INFO L87 Difference]: Start difference. First operand 138309 states and 154330 transitions. Second operand has 4 states, 4 states have (on average 188.25) internal successors, (753), 4 states have internal predecessors, (753), 0 states have call successors, (0), 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 16:42:19,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 16:42:19,570 INFO L93 Difference]: Finished difference Result 380453 states and 425857 transitions. [2022-12-13 16:42:19,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 16:42:19,571 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 188.25) internal successors, (753), 4 states have internal predecessors, (753), 0 states have call successors, (0), 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 990 [2022-12-13 16:42:19,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 16:42:19,834 INFO L225 Difference]: With dead ends: 380453 [2022-12-13 16:42:19,835 INFO L226 Difference]: Without dead ends: 244876 [2022-12-13 16:42:19,896 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 16:42:19,897 INFO L413 NwaCegarLoop]: 1133 mSDtfsCounter, 3153 mSDsluCounter, 305 mSDsCounter, 0 mSdLazyCounter, 9030 mSolverCounterSat, 2113 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3153 SdHoareTripleChecker+Valid, 1438 SdHoareTripleChecker+Invalid, 11143 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2113 IncrementalHoareTripleChecker+Valid, 9030 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.0s IncrementalHoareTripleChecker+Time [2022-12-13 16:42:19,897 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3153 Valid, 1438 Invalid, 11143 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2113 Valid, 9030 Invalid, 0 Unknown, 0 Unchecked, 10.0s Time] [2022-12-13 16:42:20,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244876 states. [2022-12-13 16:42:21,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244876 to 233886. [2022-12-13 16:42:21,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 233886 states, 233885 states have (on average 1.1130427346772986) internal successors, (260324), 233885 states have internal predecessors, (260324), 0 states have call successors, (0), 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 16:42:22,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233886 states to 233886 states and 260324 transitions. [2022-12-13 16:42:22,342 INFO L78 Accepts]: Start accepts. Automaton has 233886 states and 260324 transitions. Word has length 990 [2022-12-13 16:42:22,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 16:42:22,343 INFO L495 AbstractCegarLoop]: Abstraction has 233886 states and 260324 transitions. [2022-12-13 16:42:22,343 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 188.25) internal successors, (753), 4 states have internal predecessors, (753), 0 states have call successors, (0), 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 16:42:22,343 INFO L276 IsEmpty]: Start isEmpty. Operand 233886 states and 260324 transitions. [2022-12-13 16:42:22,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1067 [2022-12-13 16:42:22,351 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 16:42:22,351 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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:42:22,351 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-12-13 16:42:22,351 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 16:42:22,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:42:22,352 INFO L85 PathProgramCache]: Analyzing trace with hash -470824847, now seen corresponding path program 1 times [2022-12-13 16:42:22,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:42:22,352 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2137902115] [2022-12-13 16:42:22,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:42:22,352 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:42:22,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:42:22,983 INFO L134 CoverageAnalysis]: Checked inductivity of 1245 backedges. 655 proven. 0 refuted. 0 times theorem prover too weak. 590 trivial. 0 not checked. [2022-12-13 16:42:22,984 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:42:22,984 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2137902115] [2022-12-13 16:42:22,984 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2137902115] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:42:22,984 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:42:22,984 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 16:42:22,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [744187174] [2022-12-13 16:42:22,984 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:42:22,985 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 16:42:22,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:42:22,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 16:42:22,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-13 16:42:22,985 INFO L87 Difference]: Start difference. First operand 233886 states and 260324 transitions. Second operand has 4 states, 4 states have (on average 175.25) internal successors, (701), 4 states have internal predecessors, (701), 0 states have call successors, (0), 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 16:42:34,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 16:42:34,340 INFO L93 Difference]: Finished difference Result 626121 states and 703812 transitions. [2022-12-13 16:42:34,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 16:42:34,341 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 175.25) internal successors, (701), 4 states have internal predecessors, (701), 0 states have call successors, (0), 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 1066 [2022-12-13 16:42:34,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 16:42:34,871 INFO L225 Difference]: With dead ends: 626121 [2022-12-13 16:42:34,871 INFO L226 Difference]: Without dead ends: 394967 [2022-12-13 16:42:34,953 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 16:42:34,953 INFO L413 NwaCegarLoop]: 711 mSDtfsCounter, 4863 mSDsluCounter, 133 mSDsCounter, 0 mSdLazyCounter, 5964 mSolverCounterSat, 4163 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4863 SdHoareTripleChecker+Valid, 844 SdHoareTripleChecker+Invalid, 10127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4163 IncrementalHoareTripleChecker+Valid, 5964 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.7s IncrementalHoareTripleChecker+Time [2022-12-13 16:42:34,954 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4863 Valid, 844 Invalid, 10127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4163 Valid, 5964 Invalid, 0 Unknown, 0 Unchecked, 9.7s Time] [2022-12-13 16:42:35,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 394967 states. [2022-12-13 16:42:38,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 394967 to 394958. [2022-12-13 16:42:38,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 394958 states, 394957 states have (on average 1.0973776892168008) internal successors, (433417), 394957 states have internal predecessors, (433417), 0 states have call successors, (0), 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 16:42:39,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 394958 states to 394958 states and 433417 transitions. [2022-12-13 16:42:39,230 INFO L78 Accepts]: Start accepts. Automaton has 394958 states and 433417 transitions. Word has length 1066 [2022-12-13 16:42:39,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 16:42:39,230 INFO L495 AbstractCegarLoop]: Abstraction has 394958 states and 433417 transitions. [2022-12-13 16:42:39,230 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 175.25) internal successors, (701), 4 states have internal predecessors, (701), 0 states have call successors, (0), 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 16:42:39,230 INFO L276 IsEmpty]: Start isEmpty. Operand 394958 states and 433417 transitions. [2022-12-13 16:42:39,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1128 [2022-12-13 16:42:39,241 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 16:42:39,241 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:42:39,241 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-12-13 16:42:39,241 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 16:42:39,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:42:39,242 INFO L85 PathProgramCache]: Analyzing trace with hash 1156942247, now seen corresponding path program 1 times [2022-12-13 16:42:39,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:42:39,242 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [676657979] [2022-12-13 16:42:39,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:42:39,242 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:42:39,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:42:40,032 INFO L134 CoverageAnalysis]: Checked inductivity of 903 backedges. 694 proven. 0 refuted. 0 times theorem prover too weak. 209 trivial. 0 not checked. [2022-12-13 16:42:40,032 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:42:40,032 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [676657979] [2022-12-13 16:42:40,032 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [676657979] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:42:40,032 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:42:40,033 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 16:42:40,033 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [790088842] [2022-12-13 16:42:40,033 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:42:40,034 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 16:42:40,034 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:42:40,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 16:42:40,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 16:42:40,036 INFO L87 Difference]: Start difference. First operand 394958 states and 433417 transitions. Second operand has 3 states, 3 states have (on average 306.3333333333333) internal successors, (919), 3 states have internal predecessors, (919), 0 states have call successors, (0), 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 16:42:49,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 16:42:49,290 INFO L93 Difference]: Finished difference Result 829548 states and 912705 transitions. [2022-12-13 16:42:49,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 16:42:49,291 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 306.3333333333333) internal successors, (919), 3 states have internal predecessors, (919), 0 states have call successors, (0), 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 1127 [2022-12-13 16:42:49,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 16:42:49,904 INFO L225 Difference]: With dead ends: 829548 [2022-12-13 16:42:49,905 INFO L226 Difference]: Without dead ends: 435957 [2022-12-13 16:42:49,999 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 16:42:49,999 INFO L413 NwaCegarLoop]: 2960 mSDtfsCounter, 1074 mSDsluCounter, 159 mSDsCounter, 0 mSdLazyCounter, 4899 mSolverCounterSat, 878 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1074 SdHoareTripleChecker+Valid, 3119 SdHoareTripleChecker+Invalid, 5777 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 878 IncrementalHoareTripleChecker+Valid, 4899 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.1s IncrementalHoareTripleChecker+Time [2022-12-13 16:42:50,000 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1074 Valid, 3119 Invalid, 5777 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [878 Valid, 4899 Invalid, 0 Unknown, 0 Unchecked, 7.1s Time] [2022-12-13 16:42:50,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 435957 states. [2022-12-13 16:42:53,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 435957 to 434543. [2022-12-13 16:42:53,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 434543 states, 434542 states have (on average 1.0842933479387493) internal successors, (471171), 434542 states have internal predecessors, (471171), 0 states have call successors, (0), 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 16:42:54,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 434543 states to 434543 states and 471171 transitions. [2022-12-13 16:42:54,527 INFO L78 Accepts]: Start accepts. Automaton has 434543 states and 471171 transitions. Word has length 1127 [2022-12-13 16:42:54,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 16:42:54,528 INFO L495 AbstractCegarLoop]: Abstraction has 434543 states and 471171 transitions. [2022-12-13 16:42:54,528 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 306.3333333333333) internal successors, (919), 3 states have internal predecessors, (919), 0 states have call successors, (0), 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 16:42:54,528 INFO L276 IsEmpty]: Start isEmpty. Operand 434543 states and 471171 transitions. [2022-12-13 16:42:54,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1171 [2022-12-13 16:42:54,547 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 16:42:54,547 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-12-13 16:42:54,548 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-12-13 16:42:54,548 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 16:42:54,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:42:54,548 INFO L85 PathProgramCache]: Analyzing trace with hash -1038999872, now seen corresponding path program 1 times [2022-12-13 16:42:54,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:42:54,548 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [714712889] [2022-12-13 16:42:54,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:42:54,549 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:42:54,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:42:55,316 INFO L134 CoverageAnalysis]: Checked inductivity of 885 backedges. 89 proven. 0 refuted. 0 times theorem prover too weak. 796 trivial. 0 not checked. [2022-12-13 16:42:55,316 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:42:55,316 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [714712889] [2022-12-13 16:42:55,316 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [714712889] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:42:55,316 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:42:55,317 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 16:42:55,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2027842525] [2022-12-13 16:42:55,317 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:42:55,318 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 16:42:55,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:42:55,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 16:42:55,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 16:42:55,319 INFO L87 Difference]: Start difference. First operand 434543 states and 471171 transitions. Second operand has 3 states, 3 states have (on average 178.33333333333334) internal successors, (535), 2 states have internal predecessors, (535), 0 states have call successors, (0), 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 16:43:02,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 16:43:02,383 INFO L93 Difference]: Finished difference Result 864992 states and 938154 transitions. [2022-12-13 16:43:02,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 16:43:02,384 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 178.33333333333334) internal successors, (535), 2 states have internal predecessors, (535), 0 states have call successors, (0), 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 1170 [2022-12-13 16:43:02,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 16:43:03,026 INFO L225 Difference]: With dead ends: 864992 [2022-12-13 16:43:03,026 INFO L226 Difference]: Without dead ends: 433181 [2022-12-13 16:43:03,152 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 16:43:03,153 INFO L413 NwaCegarLoop]: 635 mSDtfsCounter, 1349 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 3903 mSolverCounterSat, 1319 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1349 SdHoareTripleChecker+Valid, 678 SdHoareTripleChecker+Invalid, 5222 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1319 IncrementalHoareTripleChecker+Valid, 3903 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2022-12-13 16:43:03,153 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1349 Valid, 678 Invalid, 5222 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1319 Valid, 3903 Invalid, 0 Unknown, 0 Unchecked, 5.1s Time] [2022-12-13 16:43:03,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 433181 states. [2022-12-13 16:43:06,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 433181 to 369003. [2022-12-13 16:43:06,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 369003 states, 369002 states have (on average 1.0833084915528912) internal successors, (399743), 369002 states have internal predecessors, (399743), 0 states have call successors, (0), 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 16:43:07,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 369003 states to 369003 states and 399743 transitions. [2022-12-13 16:43:07,404 INFO L78 Accepts]: Start accepts. Automaton has 369003 states and 399743 transitions. Word has length 1170 [2022-12-13 16:43:07,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 16:43:07,404 INFO L495 AbstractCegarLoop]: Abstraction has 369003 states and 399743 transitions. [2022-12-13 16:43:07,405 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 178.33333333333334) internal successors, (535), 2 states have internal predecessors, (535), 0 states have call successors, (0), 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 16:43:07,405 INFO L276 IsEmpty]: Start isEmpty. Operand 369003 states and 399743 transitions. [2022-12-13 16:43:07,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1329 [2022-12-13 16:43:07,417 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 16:43:07,418 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-12-13 16:43:07,418 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-12-13 16:43:07,418 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 16:43:07,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:43:07,418 INFO L85 PathProgramCache]: Analyzing trace with hash -2128449854, now seen corresponding path program 1 times [2022-12-13 16:43:07,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:43:07,419 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [364207745] [2022-12-13 16:43:07,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:43:07,419 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:43:07,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:43:09,840 INFO L134 CoverageAnalysis]: Checked inductivity of 960 backedges. 445 proven. 485 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-12-13 16:43:09,840 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:43:09,840 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [364207745] [2022-12-13 16:43:09,840 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [364207745] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 16:43:09,840 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1143288943] [2022-12-13 16:43:09,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:43:09,840 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 16:43:09,841 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efee8c50-7475-4553-8e1b-cb3f63690804/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 16:43:09,841 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efee8c50-7475-4553-8e1b-cb3f63690804/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 16:43:09,842 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efee8c50-7475-4553-8e1b-cb3f63690804/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-12-13 16:43:10,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:43:10,246 INFO L263 TraceCheckSpWp]: Trace formula consists of 1487 conjuncts, 2 conjunts are in the unsatisfiable core [2022-12-13 16:43:10,253 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 16:43:10,396 INFO L134 CoverageAnalysis]: Checked inductivity of 960 backedges. 475 proven. 0 refuted. 0 times theorem prover too weak. 485 trivial. 0 not checked. [2022-12-13 16:43:10,396 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 16:43:10,396 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1143288943] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:43:10,396 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 16:43:10,396 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 8 [2022-12-13 16:43:10,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1154626212] [2022-12-13 16:43:10,397 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:43:10,397 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 16:43:10,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:43:10,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 16:43:10,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-12-13 16:43:10,398 INFO L87 Difference]: Start difference. First operand 369003 states and 399743 transitions. Second operand has 3 states, 3 states have (on average 281.3333333333333) internal successors, (844), 3 states have internal predecessors, (844), 0 states have call successors, (0), 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 16:43:16,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 16:43:16,895 INFO L93 Difference]: Finished difference Result 739375 states and 800766 transitions. [2022-12-13 16:43:16,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 16:43:16,896 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 281.3333333333333) internal successors, (844), 3 states have internal predecessors, (844), 0 states have call successors, (0), 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 1328 [2022-12-13 16:43:16,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 16:43:17,308 INFO L225 Difference]: With dead ends: 739375 [2022-12-13 16:43:17,308 INFO L226 Difference]: Without dead ends: 371738 [2022-12-13 16:43:17,467 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1333 GetRequests, 1327 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-12-13 16:43:17,468 INFO L413 NwaCegarLoop]: 2830 mSDtfsCounter, 1397 mSDsluCounter, 165 mSDsCounter, 0 mSdLazyCounter, 3626 mSolverCounterSat, 1134 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1397 SdHoareTripleChecker+Valid, 2995 SdHoareTripleChecker+Invalid, 4760 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1134 IncrementalHoareTripleChecker+Valid, 3626 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2022-12-13 16:43:17,468 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1397 Valid, 2995 Invalid, 4760 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1134 Valid, 3626 Invalid, 0 Unknown, 0 Unchecked, 4.8s Time] [2022-12-13 16:43:17,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 371738 states. [2022-12-13 16:43:21,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 371738 to 364905. [2022-12-13 16:43:21,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 364905 states, 364904 states have (on average 1.0691908008681736) internal successors, (390152), 364904 states have internal predecessors, (390152), 0 states have call successors, (0), 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 16:43:21,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 364905 states to 364905 states and 390152 transitions. [2022-12-13 16:43:21,780 INFO L78 Accepts]: Start accepts. Automaton has 364905 states and 390152 transitions. Word has length 1328 [2022-12-13 16:43:21,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 16:43:21,781 INFO L495 AbstractCegarLoop]: Abstraction has 364905 states and 390152 transitions. [2022-12-13 16:43:21,781 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 281.3333333333333) internal successors, (844), 3 states have internal predecessors, (844), 0 states have call successors, (0), 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 16:43:21,781 INFO L276 IsEmpty]: Start isEmpty. Operand 364905 states and 390152 transitions. [2022-12-13 16:43:21,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1402 [2022-12-13 16:43:21,807 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 16:43:21,808 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-12-13 16:43:21,812 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efee8c50-7475-4553-8e1b-cb3f63690804/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-12-13 16:43:22,008 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efee8c50-7475-4553-8e1b-cb3f63690804/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 16:43:22,010 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 16:43:22,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:43:22,011 INFO L85 PathProgramCache]: Analyzing trace with hash -1712724798, now seen corresponding path program 1 times [2022-12-13 16:43:22,011 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:43:22,011 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1629661243] [2022-12-13 16:43:22,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:43:22,011 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:43:22,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:43:24,058 INFO L134 CoverageAnalysis]: Checked inductivity of 922 backedges. 264 proven. 658 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:43:24,058 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:43:24,058 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1629661243] [2022-12-13 16:43:24,058 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1629661243] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 16:43:24,058 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [105276752] [2022-12-13 16:43:24,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:43:24,058 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 16:43:24,059 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efee8c50-7475-4553-8e1b-cb3f63690804/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 16:43:24,059 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efee8c50-7475-4553-8e1b-cb3f63690804/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 16:43:24,060 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efee8c50-7475-4553-8e1b-cb3f63690804/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-12-13 16:43:24,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:43:24,484 INFO L263 TraceCheckSpWp]: Trace formula consists of 1559 conjuncts, 2 conjunts are in the unsatisfiable core [2022-12-13 16:43:24,491 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 16:43:24,601 INFO L134 CoverageAnalysis]: Checked inductivity of 922 backedges. 437 proven. 0 refuted. 0 times theorem prover too weak. 485 trivial. 0 not checked. [2022-12-13 16:43:24,601 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 16:43:24,601 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [105276752] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:43:24,601 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 16:43:24,602 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2022-12-13 16:43:24,602 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [61061079] [2022-12-13 16:43:24,602 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:43:24,602 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 16:43:24,602 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:43:24,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 16:43:24,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-12-13 16:43:24,603 INFO L87 Difference]: Start difference. First operand 364905 states and 390152 transitions. Second operand has 3 states, 3 states have (on average 305.6666666666667) internal successors, (917), 3 states have internal predecessors, (917), 0 states have call successors, (0), 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 16:43:31,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 16:43:31,525 INFO L93 Difference]: Finished difference Result 785782 states and 840754 transitions. [2022-12-13 16:43:31,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 16:43:31,526 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 305.6666666666667) internal successors, (917), 3 states have internal predecessors, (917), 0 states have call successors, (0), 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 1401 [2022-12-13 16:43:31,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 16:43:32,200 INFO L225 Difference]: With dead ends: 785782 [2022-12-13 16:43:32,200 INFO L226 Difference]: Without dead ends: 422244 [2022-12-13 16:43:32,339 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1405 GetRequests, 1401 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-12-13 16:43:32,339 INFO L413 NwaCegarLoop]: 2610 mSDtfsCounter, 1498 mSDsluCounter, 125 mSDsCounter, 0 mSdLazyCounter, 3672 mSolverCounterSat, 1219 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1498 SdHoareTripleChecker+Valid, 2735 SdHoareTripleChecker+Invalid, 4891 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1219 IncrementalHoareTripleChecker+Valid, 3672 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time [2022-12-13 16:43:32,340 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1498 Valid, 2735 Invalid, 4891 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1219 Valid, 3672 Invalid, 0 Unknown, 0 Unchecked, 5.2s Time] [2022-12-13 16:43:32,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 422244 states. [2022-12-13 16:43:35,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 422244 to 416774. [2022-12-13 16:43:36,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 416774 states, 416773 states have (on average 1.064363574415809) internal successors, (443598), 416773 states have internal predecessors, (443598), 0 states have call successors, (0), 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 16:43:36,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 416774 states to 416774 states and 443598 transitions. [2022-12-13 16:43:36,487 INFO L78 Accepts]: Start accepts. Automaton has 416774 states and 443598 transitions. Word has length 1401 [2022-12-13 16:43:36,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 16:43:36,488 INFO L495 AbstractCegarLoop]: Abstraction has 416774 states and 443598 transitions. [2022-12-13 16:43:36,488 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 305.6666666666667) internal successors, (917), 3 states have internal predecessors, (917), 0 states have call successors, (0), 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 16:43:36,488 INFO L276 IsEmpty]: Start isEmpty. Operand 416774 states and 443598 transitions. [2022-12-13 16:43:36,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1462 [2022-12-13 16:43:36,505 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 16:43:36,505 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:43:36,510 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efee8c50-7475-4553-8e1b-cb3f63690804/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-12-13 16:43:36,706 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efee8c50-7475-4553-8e1b-cb3f63690804/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 16:43:36,708 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 16:43:36,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:43:36,710 INFO L85 PathProgramCache]: Analyzing trace with hash -1220602945, now seen corresponding path program 1 times [2022-12-13 16:43:36,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:43:36,710 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [416123928] [2022-12-13 16:43:36,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:43:36,711 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:43:37,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:43:39,358 INFO L134 CoverageAnalysis]: Checked inductivity of 1296 backedges. 780 proven. 485 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-12-13 16:43:39,358 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:43:39,359 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [416123928] [2022-12-13 16:43:39,359 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [416123928] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 16:43:39,359 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1032401730] [2022-12-13 16:43:39,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:43:39,359 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 16:43:39,359 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efee8c50-7475-4553-8e1b-cb3f63690804/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 16:43:39,360 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efee8c50-7475-4553-8e1b-cb3f63690804/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 16:43:39,360 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efee8c50-7475-4553-8e1b-cb3f63690804/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-12-13 16:43:39,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:43:39,826 INFO L263 TraceCheckSpWp]: Trace formula consists of 1622 conjuncts, 2 conjunts are in the unsatisfiable core [2022-12-13 16:43:39,842 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 16:43:39,909 INFO L134 CoverageAnalysis]: Checked inductivity of 1296 backedges. 91 proven. 0 refuted. 0 times theorem prover too weak. 1205 trivial. 0 not checked. [2022-12-13 16:43:39,910 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 16:43:39,910 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1032401730] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:43:39,910 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 16:43:39,911 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 8 [2022-12-13 16:43:39,911 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [761411941] [2022-12-13 16:43:39,911 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:43:39,912 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 16:43:39,913 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:43:39,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 16:43:39,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-12-13 16:43:39,914 INFO L87 Difference]: Start difference. First operand 416774 states and 443598 transitions. Second operand has 3 states, 3 states have (on average 205.66666666666666) internal successors, (617), 3 states have internal predecessors, (617), 0 states have call successors, (0), 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 16:43:47,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 16:43:47,905 INFO L93 Difference]: Finished difference Result 828079 states and 881622 transitions. [2022-12-13 16:43:47,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 16:43:47,906 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 205.66666666666666) internal successors, (617), 3 states have internal predecessors, (617), 0 states have call successors, (0), 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 1461 [2022-12-13 16:43:47,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 16:43:48,433 INFO L225 Difference]: With dead ends: 828079 [2022-12-13 16:43:48,434 INFO L226 Difference]: Without dead ends: 414037 [2022-12-13 16:43:48,586 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1466 GetRequests, 1460 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-12-13 16:43:48,587 INFO L413 NwaCegarLoop]: 1100 mSDtfsCounter, 1489 mSDsluCounter, 150 mSDsCounter, 0 mSdLazyCounter, 4486 mSolverCounterSat, 655 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1489 SdHoareTripleChecker+Valid, 1250 SdHoareTripleChecker+Invalid, 5141 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 655 IncrementalHoareTripleChecker+Valid, 4486 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.7s IncrementalHoareTripleChecker+Time [2022-12-13 16:43:48,587 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1489 Valid, 1250 Invalid, 5141 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [655 Valid, 4486 Invalid, 0 Unknown, 0 Unchecked, 5.7s Time] [2022-12-13 16:43:49,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 414037 states. [2022-12-13 16:43:52,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 414037 to 408573. [2022-12-13 16:43:52,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 408573 states, 408572 states have (on average 1.050037692254976) internal successors, (429016), 408572 states have internal predecessors, (429016), 0 states have call successors, (0), 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 16:43:52,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 408573 states to 408573 states and 429016 transitions. [2022-12-13 16:43:52,771 INFO L78 Accepts]: Start accepts. Automaton has 408573 states and 429016 transitions. Word has length 1461 [2022-12-13 16:43:52,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 16:43:52,773 INFO L495 AbstractCegarLoop]: Abstraction has 408573 states and 429016 transitions. [2022-12-13 16:43:52,773 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 205.66666666666666) internal successors, (617), 3 states have internal predecessors, (617), 0 states have call successors, (0), 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 16:43:52,773 INFO L276 IsEmpty]: Start isEmpty. Operand 408573 states and 429016 transitions. [2022-12-13 16:43:52,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1553 [2022-12-13 16:43:52,795 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 16:43:52,796 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:43:52,801 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efee8c50-7475-4553-8e1b-cb3f63690804/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2022-12-13 16:43:52,996 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efee8c50-7475-4553-8e1b-cb3f63690804/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 16:43:52,998 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 16:43:52,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:43:53,000 INFO L85 PathProgramCache]: Analyzing trace with hash -1751557296, now seen corresponding path program 1 times [2022-12-13 16:43:53,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:43:53,000 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1455551551] [2022-12-13 16:43:53,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:43:53,001 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:43:53,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:43:56,066 INFO L134 CoverageAnalysis]: Checked inductivity of 1598 backedges. 961 proven. 485 refuted. 0 times theorem prover too weak. 152 trivial. 0 not checked. [2022-12-13 16:43:56,066 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:43:56,066 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1455551551] [2022-12-13 16:43:56,066 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1455551551] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 16:43:56,066 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1018686321] [2022-12-13 16:43:56,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:43:56,066 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 16:43:56,067 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efee8c50-7475-4553-8e1b-cb3f63690804/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 16:43:56,067 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efee8c50-7475-4553-8e1b-cb3f63690804/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 16:43:56,068 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efee8c50-7475-4553-8e1b-cb3f63690804/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-12-13 16:43:56,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:43:56,427 INFO L263 TraceCheckSpWp]: Trace formula consists of 1740 conjuncts, 2 conjunts are in the unsatisfiable core [2022-12-13 16:43:56,434 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 16:43:56,487 INFO L134 CoverageAnalysis]: Checked inductivity of 1598 backedges. 119 proven. 0 refuted. 0 times theorem prover too weak. 1479 trivial. 0 not checked. [2022-12-13 16:43:56,487 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 16:43:56,488 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1018686321] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:43:56,488 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 16:43:56,489 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 8 [2022-12-13 16:43:56,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1639956014] [2022-12-13 16:43:56,489 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:43:56,490 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 16:43:56,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:43:56,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 16:43:56,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-12-13 16:43:56,492 INFO L87 Difference]: Start difference. First operand 408573 states and 429016 transitions. Second operand has 3 states, 3 states have (on average 205.66666666666666) internal successors, (617), 3 states have internal predecessors, (617), 0 states have call successors, (0), 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 16:44:05,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 16:44:05,097 INFO L93 Difference]: Finished difference Result 814475 states and 854989 transitions. [2022-12-13 16:44:05,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 16:44:05,099 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 205.66666666666666) internal successors, (617), 3 states have internal predecessors, (617), 0 states have call successors, (0), 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 1552 [2022-12-13 16:44:05,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 16:44:05,567 INFO L225 Difference]: With dead ends: 814475 [2022-12-13 16:44:05,567 INFO L226 Difference]: Without dead ends: 407269 [2022-12-13 16:44:05,873 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1557 GetRequests, 1551 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-12-13 16:44:05,874 INFO L413 NwaCegarLoop]: 2660 mSDtfsCounter, 1493 mSDsluCounter, 144 mSDsCounter, 0 mSdLazyCounter, 4863 mSolverCounterSat, 795 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1493 SdHoareTripleChecker+Valid, 2804 SdHoareTripleChecker+Invalid, 5658 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 795 IncrementalHoareTripleChecker+Valid, 4863 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.5s IncrementalHoareTripleChecker+Time [2022-12-13 16:44:05,874 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1493 Valid, 2804 Invalid, 5658 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [795 Valid, 4863 Invalid, 0 Unknown, 0 Unchecked, 6.5s Time] [2022-12-13 16:44:06,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 407269 states. [2022-12-13 16:44:09,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 407269 to 397639. [2022-12-13 16:44:09,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 397639 states, 397638 states have (on average 1.0443720167589616) internal successors, (415282), 397638 states have internal predecessors, (415282), 0 states have call successors, (0), 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 16:44:10,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 397639 states to 397639 states and 415282 transitions. [2022-12-13 16:44:10,126 INFO L78 Accepts]: Start accepts. Automaton has 397639 states and 415282 transitions. Word has length 1552 [2022-12-13 16:44:10,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 16:44:10,127 INFO L495 AbstractCegarLoop]: Abstraction has 397639 states and 415282 transitions. [2022-12-13 16:44:10,127 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 205.66666666666666) internal successors, (617), 3 states have internal predecessors, (617), 0 states have call successors, (0), 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 16:44:10,127 INFO L276 IsEmpty]: Start isEmpty. Operand 397639 states and 415282 transitions. [2022-12-13 16:44:10,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1578 [2022-12-13 16:44:10,149 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 16:44:10,150 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:44:10,155 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efee8c50-7475-4553-8e1b-cb3f63690804/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2022-12-13 16:44:10,350 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efee8c50-7475-4553-8e1b-cb3f63690804/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 16:44:10,351 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 16:44:10,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:44:10,354 INFO L85 PathProgramCache]: Analyzing trace with hash 726161877, now seen corresponding path program 1 times [2022-12-13 16:44:10,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:44:10,355 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1608438062] [2022-12-13 16:44:10,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:44:10,356 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:44:10,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:44:13,292 INFO L134 CoverageAnalysis]: Checked inductivity of 1673 backedges. 1011 proven. 485 refuted. 0 times theorem prover too weak. 177 trivial. 0 not checked. [2022-12-13 16:44:13,292 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:44:13,292 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1608438062] [2022-12-13 16:44:13,292 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1608438062] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 16:44:13,292 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [957408218] [2022-12-13 16:44:13,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:44:13,292 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 16:44:13,293 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efee8c50-7475-4553-8e1b-cb3f63690804/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 16:44:13,293 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efee8c50-7475-4553-8e1b-cb3f63690804/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 16:44:13,294 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efee8c50-7475-4553-8e1b-cb3f63690804/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-12-13 16:44:13,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:44:13,663 INFO L263 TraceCheckSpWp]: Trace formula consists of 1766 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-13 16:44:13,671 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 16:44:15,175 INFO L134 CoverageAnalysis]: Checked inductivity of 1673 backedges. 1496 proven. 0 refuted. 0 times theorem prover too weak. 177 trivial. 0 not checked. [2022-12-13 16:44:15,175 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 16:44:15,175 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [957408218] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:44:15,175 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 16:44:15,176 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 8 [2022-12-13 16:44:15,176 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [600201044] [2022-12-13 16:44:15,176 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:44:15,178 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 16:44:15,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:44:15,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 16:44:15,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-12-13 16:44:15,179 INFO L87 Difference]: Start difference. First operand 397639 states and 415282 transitions. Second operand has 4 states, 4 states have (on average 358.0) internal successors, (1432), 3 states have internal predecessors, (1432), 0 states have call successors, (0), 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 16:44:24,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 16:44:24,630 INFO L93 Difference]: Finished difference Result 795321 states and 830637 transitions. [2022-12-13 16:44:24,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 16:44:24,630 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 358.0) internal successors, (1432), 3 states have internal predecessors, (1432), 0 states have call successors, (0), 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 1577 [2022-12-13 16:44:24,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 16:44:25,104 INFO L225 Difference]: With dead ends: 795321 [2022-12-13 16:44:25,104 INFO L226 Difference]: Without dead ends: 400414 [2022-12-13 16:44:25,221 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1582 GetRequests, 1575 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-12-13 16:44:25,221 INFO L413 NwaCegarLoop]: 657 mSDtfsCounter, 2087 mSDsluCounter, 195 mSDsCounter, 0 mSdLazyCounter, 7580 mSolverCounterSat, 1351 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2087 SdHoareTripleChecker+Valid, 852 SdHoareTripleChecker+Invalid, 8931 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1351 IncrementalHoareTripleChecker+Valid, 7580 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.4s IncrementalHoareTripleChecker+Time [2022-12-13 16:44:25,221 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2087 Valid, 852 Invalid, 8931 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1351 Valid, 7580 Invalid, 0 Unknown, 0 Unchecked, 7.4s Time] [2022-12-13 16:44:25,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 400414 states. [2022-12-13 16:44:28,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 400414 to 396274. [2022-12-13 16:44:28,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 396274 states, 396273 states have (on average 1.0442220388469565) internal successors, (413797), 396273 states have internal predecessors, (413797), 0 states have call successors, (0), 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 16:44:29,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 396274 states to 396274 states and 413797 transitions. [2022-12-13 16:44:29,201 INFO L78 Accepts]: Start accepts. Automaton has 396274 states and 413797 transitions. Word has length 1577 [2022-12-13 16:44:29,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 16:44:29,201 INFO L495 AbstractCegarLoop]: Abstraction has 396274 states and 413797 transitions. [2022-12-13 16:44:29,202 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 358.0) internal successors, (1432), 3 states have internal predecessors, (1432), 0 states have call successors, (0), 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 16:44:29,202 INFO L276 IsEmpty]: Start isEmpty. Operand 396274 states and 413797 transitions. [2022-12-13 16:44:29,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1685 [2022-12-13 16:44:29,228 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 16:44:29,229 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-12-13 16:44:29,235 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efee8c50-7475-4553-8e1b-cb3f63690804/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-12-13 16:44:29,429 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efee8c50-7475-4553-8e1b-cb3f63690804/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2022-12-13 16:44:29,431 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 16:44:29,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:44:29,432 INFO L85 PathProgramCache]: Analyzing trace with hash -1281698430, now seen corresponding path program 1 times [2022-12-13 16:44:29,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:44:29,433 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1102082634] [2022-12-13 16:44:29,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:44:29,434 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:44:29,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:44:30,603 INFO L134 CoverageAnalysis]: Checked inductivity of 1629 backedges. 468 proven. 0 refuted. 0 times theorem prover too weak. 1161 trivial. 0 not checked. [2022-12-13 16:44:30,603 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:44:30,603 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1102082634] [2022-12-13 16:44:30,603 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1102082634] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:44:30,603 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:44:30,604 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 16:44:30,604 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2121515103] [2022-12-13 16:44:30,604 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:44:30,605 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 16:44:30,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:44:30,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 16:44:30,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 16:44:30,607 INFO L87 Difference]: Start difference. First operand 396274 states and 413797 transitions. Second operand has 3 states, 3 states have (on average 287.3333333333333) internal successors, (862), 3 states have internal predecessors, (862), 0 states have call successors, (0), 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 16:44:38,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 16:44:38,611 INFO L93 Difference]: Finished difference Result 828064 states and 865421 transitions. [2022-12-13 16:44:38,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 16:44:38,611 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 287.3333333333333) internal successors, (862), 3 states have internal predecessors, (862), 0 states have call successors, (0), 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 1684 [2022-12-13 16:44:38,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 16:44:39,113 INFO L225 Difference]: With dead ends: 828064 [2022-12-13 16:44:39,114 INFO L226 Difference]: Without dead ends: 434522 [2022-12-13 16:44:39,254 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 16:44:39,255 INFO L413 NwaCegarLoop]: 2975 mSDtfsCounter, 1287 mSDsluCounter, 205 mSDsCounter, 0 mSdLazyCounter, 4632 mSolverCounterSat, 595 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1287 SdHoareTripleChecker+Valid, 3180 SdHoareTripleChecker+Invalid, 5227 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 595 IncrementalHoareTripleChecker+Valid, 4632 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.2s IncrementalHoareTripleChecker+Time [2022-12-13 16:44:39,255 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1287 Valid, 3180 Invalid, 5227 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [595 Valid, 4632 Invalid, 0 Unknown, 0 Unchecked, 6.2s Time] [2022-12-13 16:44:39,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 434522 states. [2022-12-13 16:44:43,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 434522 to 431776. [2022-12-13 16:44:43,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 431776 states, 431775 states have (on average 1.0422256962538359) internal successors, (450007), 431775 states have internal predecessors, (450007), 0 states have call successors, (0), 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 16:44:43,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 431776 states to 431776 states and 450007 transitions. [2022-12-13 16:44:43,638 INFO L78 Accepts]: Start accepts. Automaton has 431776 states and 450007 transitions. Word has length 1684 [2022-12-13 16:44:43,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 16:44:43,639 INFO L495 AbstractCegarLoop]: Abstraction has 431776 states and 450007 transitions. [2022-12-13 16:44:43,639 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 287.3333333333333) internal successors, (862), 3 states have internal predecessors, (862), 0 states have call successors, (0), 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 16:44:43,639 INFO L276 IsEmpty]: Start isEmpty. Operand 431776 states and 450007 transitions. [2022-12-13 16:44:43,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1720 [2022-12-13 16:44:43,666 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 16:44:43,666 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, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-12-13 16:44:43,666 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-12-13 16:44:43,666 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 16:44:43,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:44:43,667 INFO L85 PathProgramCache]: Analyzing trace with hash 2035638300, now seen corresponding path program 1 times [2022-12-13 16:44:43,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:44:43,667 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1307237239] [2022-12-13 16:44:43,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:44:43,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:44:44,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:44:46,984 INFO L134 CoverageAnalysis]: Checked inductivity of 2496 backedges. 1216 proven. 485 refuted. 0 times theorem prover too weak. 795 trivial. 0 not checked. [2022-12-13 16:44:46,985 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:44:46,985 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1307237239] [2022-12-13 16:44:46,985 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1307237239] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 16:44:46,985 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [638397051] [2022-12-13 16:44:46,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:44:46,985 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 16:44:46,985 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efee8c50-7475-4553-8e1b-cb3f63690804/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 16:44:46,986 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efee8c50-7475-4553-8e1b-cb3f63690804/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 16:44:46,987 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efee8c50-7475-4553-8e1b-cb3f63690804/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-12-13 16:44:47,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:44:47,539 INFO L263 TraceCheckSpWp]: Trace formula consists of 1964 conjuncts, 2 conjunts are in the unsatisfiable core [2022-12-13 16:44:47,548 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 16:44:47,576 INFO L134 CoverageAnalysis]: Checked inductivity of 2496 backedges. 1197 proven. 0 refuted. 0 times theorem prover too weak. 1299 trivial. 0 not checked. [2022-12-13 16:44:47,576 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 16:44:47,576 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [638397051] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:44:47,576 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 16:44:47,578 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 8 [2022-12-13 16:44:47,578 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [9039649] [2022-12-13 16:44:47,578 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:44:47,580 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 16:44:47,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:44:47,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 16:44:47,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-12-13 16:44:47,581 INFO L87 Difference]: Start difference. First operand 431776 states and 450007 transitions. Second operand has 3 states, 3 states have (on average 269.3333333333333) internal successors, (808), 3 states have internal predecessors, (808), 0 states have call successors, (0), 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 16:44:56,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 16:44:56,121 INFO L93 Difference]: Finished difference Result 878562 states and 915449 transitions. [2022-12-13 16:44:56,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 16:44:56,122 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 269.3333333333333) internal successors, (808), 3 states have internal predecessors, (808), 0 states have call successors, (0), 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 1719 [2022-12-13 16:44:56,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 16:44:56,789 INFO L225 Difference]: With dead ends: 878562 [2022-12-13 16:44:56,789 INFO L226 Difference]: Without dead ends: 449518 [2022-12-13 16:44:56,928 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1724 GetRequests, 1718 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-12-13 16:44:56,929 INFO L413 NwaCegarLoop]: 2846 mSDtfsCounter, 1403 mSDsluCounter, 237 mSDsCounter, 0 mSdLazyCounter, 4377 mSolverCounterSat, 488 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1403 SdHoareTripleChecker+Valid, 3083 SdHoareTripleChecker+Invalid, 4865 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 488 IncrementalHoareTripleChecker+Valid, 4377 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.3s IncrementalHoareTripleChecker+Time [2022-12-13 16:44:56,929 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1403 Valid, 3083 Invalid, 4865 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [488 Valid, 4377 Invalid, 0 Unknown, 0 Unchecked, 6.3s Time] [2022-12-13 16:44:57,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 449518 states. [2022-12-13 16:45:00,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 449518 to 430406. [2022-12-13 16:45:00,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 430406 states, 430405 states have (on average 1.0413145758065079) internal successors, (448187), 430405 states have internal predecessors, (448187), 0 states have call successors, (0), 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 16:45:01,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 430406 states to 430406 states and 448187 transitions. [2022-12-13 16:45:01,339 INFO L78 Accepts]: Start accepts. Automaton has 430406 states and 448187 transitions. Word has length 1719 [2022-12-13 16:45:01,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 16:45:01,341 INFO L495 AbstractCegarLoop]: Abstraction has 430406 states and 448187 transitions. [2022-12-13 16:45:01,341 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 269.3333333333333) internal successors, (808), 3 states have internal predecessors, (808), 0 states have call successors, (0), 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 16:45:01,341 INFO L276 IsEmpty]: Start isEmpty. Operand 430406 states and 448187 transitions. [2022-12-13 16:45:01,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1720 [2022-12-13 16:45:01,367 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 16:45:01,368 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 16:45:01,373 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efee8c50-7475-4553-8e1b-cb3f63690804/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2022-12-13 16:45:01,568 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efee8c50-7475-4553-8e1b-cb3f63690804/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2022-12-13 16:45:01,570 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 16:45:01,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:45:01,572 INFO L85 PathProgramCache]: Analyzing trace with hash 1089270931, now seen corresponding path program 1 times [2022-12-13 16:45:01,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:45:01,572 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [369743391] [2022-12-13 16:45:01,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:45:01,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:45:01,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:45:03,070 INFO L134 CoverageAnalysis]: Checked inductivity of 1703 backedges. 468 proven. 0 refuted. 0 times theorem prover too weak. 1235 trivial. 0 not checked. [2022-12-13 16:45:03,070 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:45:03,070 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [369743391] [2022-12-13 16:45:03,070 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [369743391] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:45:03,070 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:45:03,071 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 16:45:03,071 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2075309865] [2022-12-13 16:45:03,071 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:45:03,073 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 16:45:03,073 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:45:03,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 16:45:03,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 16:45:03,075 INFO L87 Difference]: Start difference. First operand 430406 states and 448187 transitions. Second operand has 3 states, 3 states have (on average 286.6666666666667) internal successors, (860), 3 states have internal predecessors, (860), 0 states have call successors, (0), 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 16:45:12,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 16:45:12,222 INFO L93 Difference]: Finished difference Result 968724 states and 1010211 transitions. [2022-12-13 16:45:12,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 16:45:12,223 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 286.6666666666667) internal successors, (860), 3 states have internal predecessors, (860), 0 states have call successors, (0), 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 1719 [2022-12-13 16:45:12,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 16:45:12,944 INFO L225 Difference]: With dead ends: 968724 [2022-12-13 16:45:12,944 INFO L226 Difference]: Without dead ends: 541050 [2022-12-13 16:45:13,053 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 16:45:13,054 INFO L413 NwaCegarLoop]: 2074 mSDtfsCounter, 1531 mSDsluCounter, 120 mSDsCounter, 0 mSdLazyCounter, 4926 mSolverCounterSat, 853 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1531 SdHoareTripleChecker+Valid, 2194 SdHoareTripleChecker+Invalid, 5779 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 853 IncrementalHoareTripleChecker+Valid, 4926 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.7s IncrementalHoareTripleChecker+Time [2022-12-13 16:45:13,054 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1531 Valid, 2194 Invalid, 5779 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [853 Valid, 4926 Invalid, 0 Unknown, 0 Unchecked, 6.7s Time] [2022-12-13 16:45:13,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 541050 states. [2022-12-13 16:45:17,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 541050 to 535551. [2022-12-13 16:45:18,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 535551 states, 535550 states have (on average 1.040681542339651) internal successors, (557337), 535550 states have internal predecessors, (557337), 0 states have call successors, (0), 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 16:45:18,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 535551 states to 535551 states and 557337 transitions. [2022-12-13 16:45:18,774 INFO L78 Accepts]: Start accepts. Automaton has 535551 states and 557337 transitions. Word has length 1719 [2022-12-13 16:45:18,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 16:45:18,775 INFO L495 AbstractCegarLoop]: Abstraction has 535551 states and 557337 transitions. [2022-12-13 16:45:18,775 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 286.6666666666667) internal successors, (860), 3 states have internal predecessors, (860), 0 states have call successors, (0), 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 16:45:18,776 INFO L276 IsEmpty]: Start isEmpty. Operand 535551 states and 557337 transitions. [2022-12-13 16:45:18,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1831 [2022-12-13 16:45:18,808 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 16:45:18,808 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-12-13 16:45:18,808 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-12-13 16:45:18,808 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 16:45:18,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:45:18,809 INFO L85 PathProgramCache]: Analyzing trace with hash -671006259, now seen corresponding path program 1 times [2022-12-13 16:45:18,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:45:18,809 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1098512169] [2022-12-13 16:45:18,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:45:18,809 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:45:19,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:45:23,856 INFO L134 CoverageAnalysis]: Checked inductivity of 2067 backedges. 1295 proven. 742 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-12-13 16:45:23,856 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:45:23,856 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1098512169] [2022-12-13 16:45:23,856 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1098512169] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 16:45:23,856 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1340996879] [2022-12-13 16:45:23,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:45:23,856 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 16:45:23,856 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efee8c50-7475-4553-8e1b-cb3f63690804/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 16:45:23,857 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efee8c50-7475-4553-8e1b-cb3f63690804/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 16:45:23,858 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efee8c50-7475-4553-8e1b-cb3f63690804/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-12-13 16:45:24,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:45:24,326 INFO L263 TraceCheckSpWp]: Trace formula consists of 2021 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-13 16:45:24,335 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 16:45:24,885 INFO L134 CoverageAnalysis]: Checked inductivity of 2067 backedges. 1552 proven. 0 refuted. 0 times theorem prover too weak. 515 trivial. 0 not checked. [2022-12-13 16:45:24,885 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 16:45:24,885 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1340996879] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:45:24,885 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 16:45:24,885 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2022-12-13 16:45:24,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [578954085] [2022-12-13 16:45:24,886 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:45:24,886 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 16:45:24,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:45:24,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 16:45:24,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-12-13 16:45:24,887 INFO L87 Difference]: Start difference. First operand 535551 states and 557337 transitions. Second operand has 3 states, 3 states have (on average 439.0) internal successors, (1317), 3 states have internal predecessors, (1317), 0 states have call successors, (0), 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 16:45:33,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 16:45:33,302 INFO L93 Difference]: Finished difference Result 1076627 states and 1120562 transitions. [2022-12-13 16:45:33,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 16:45:33,302 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 439.0) internal successors, (1317), 3 states have internal predecessors, (1317), 0 states have call successors, (0), 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 1830 [2022-12-13 16:45:33,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 16:45:33,920 INFO L225 Difference]: With dead ends: 1076627 [2022-12-13 16:45:33,920 INFO L226 Difference]: Without dead ends: 543808 [2022-12-13 16:45:34,377 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1838 GetRequests, 1830 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-12-13 16:45:34,378 INFO L413 NwaCegarLoop]: 2752 mSDtfsCounter, 1177 mSDsluCounter, 160 mSDsCounter, 0 mSdLazyCounter, 4617 mSolverCounterSat, 123 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1177 SdHoareTripleChecker+Valid, 2912 SdHoareTripleChecker+Invalid, 4740 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 123 IncrementalHoareTripleChecker+Valid, 4617 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.7s IncrementalHoareTripleChecker+Time [2022-12-13 16:45:34,378 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1177 Valid, 2912 Invalid, 4740 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [123 Valid, 4617 Invalid, 0 Unknown, 0 Unchecked, 5.7s Time] [2022-12-13 16:45:34,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 543808 states. [2022-12-13 16:45:38,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 543808 to 539654. [2022-12-13 16:45:38,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 539654 states, 539653 states have (on average 1.0406724320998864) internal successors, (561602), 539653 states have internal predecessors, (561602), 0 states have call successors, (0), 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 16:45:39,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 539654 states to 539654 states and 561602 transitions. [2022-12-13 16:45:39,689 INFO L78 Accepts]: Start accepts. Automaton has 539654 states and 561602 transitions. Word has length 1830 [2022-12-13 16:45:39,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 16:45:39,690 INFO L495 AbstractCegarLoop]: Abstraction has 539654 states and 561602 transitions. [2022-12-13 16:45:39,690 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 439.0) internal successors, (1317), 3 states have internal predecessors, (1317), 0 states have call successors, (0), 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 16:45:39,690 INFO L276 IsEmpty]: Start isEmpty. Operand 539654 states and 561602 transitions. [2022-12-13 16:45:39,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1880 [2022-12-13 16:45:39,727 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 16:45:39,727 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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:45:39,733 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efee8c50-7475-4553-8e1b-cb3f63690804/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2022-12-13 16:45:39,928 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efee8c50-7475-4553-8e1b-cb3f63690804/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2022-12-13 16:45:39,929 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 16:45:39,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:45:39,932 INFO L85 PathProgramCache]: Analyzing trace with hash -62419809, now seen corresponding path program 1 times [2022-12-13 16:45:39,932 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:45:39,933 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [791139563] [2022-12-13 16:45:39,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:45:39,934 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:45:40,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:45:43,917 INFO L134 CoverageAnalysis]: Checked inductivity of 2710 backedges. 1536 proven. 485 refuted. 0 times theorem prover too weak. 689 trivial. 0 not checked. [2022-12-13 16:45:43,917 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:45:43,917 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [791139563] [2022-12-13 16:45:43,918 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [791139563] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 16:45:43,918 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1351490585] [2022-12-13 16:45:43,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:45:43,918 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 16:45:43,918 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efee8c50-7475-4553-8e1b-cb3f63690804/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 16:45:43,919 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efee8c50-7475-4553-8e1b-cb3f63690804/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 16:45:43,919 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efee8c50-7475-4553-8e1b-cb3f63690804/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-12-13 16:45:44,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:45:44,386 INFO L263 TraceCheckSpWp]: Trace formula consists of 2102 conjuncts, 2 conjunts are in the unsatisfiable core [2022-12-13 16:45:44,393 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 16:45:44,425 INFO L134 CoverageAnalysis]: Checked inductivity of 2710 backedges. 151 proven. 0 refuted. 0 times theorem prover too weak. 2559 trivial. 0 not checked. [2022-12-13 16:45:44,425 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 16:45:44,425 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1351490585] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:45:44,425 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 16:45:44,426 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 8 [2022-12-13 16:45:44,426 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [272436340] [2022-12-13 16:45:44,426 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:45:44,427 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 16:45:44,427 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:45:44,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 16:45:44,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-12-13 16:45:44,427 INFO L87 Difference]: Start difference. First operand 539654 states and 561602 transitions. Second operand has 3 states, 3 states have (on average 219.33333333333334) 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 16:45:52,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 16:45:52,096 INFO L93 Difference]: Finished difference Result 1080659 states and 1124824 transitions. [2022-12-13 16:45:52,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 16:45:52,096 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 219.33333333333334) 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 1879 [2022-12-13 16:45:52,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 16:45:52,731 INFO L225 Difference]: With dead ends: 1080659 [2022-12-13 16:45:52,731 INFO L226 Difference]: Without dead ends: 543737 [2022-12-13 16:45:52,901 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1884 GetRequests, 1878 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-12-13 16:45:52,901 INFO L413 NwaCegarLoop]: 341 mSDtfsCounter, 2647 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 4090 mSolverCounterSat, 670 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2647 SdHoareTripleChecker+Valid, 361 SdHoareTripleChecker+Invalid, 4760 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 670 IncrementalHoareTripleChecker+Valid, 4090 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2022-12-13 16:45:52,901 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2647 Valid, 361 Invalid, 4760 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [670 Valid, 4090 Invalid, 0 Unknown, 0 Unchecked, 5.0s Time] [2022-12-13 16:45:53,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 543737 states. [2022-12-13 16:45:57,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 543737 to 536910. [2022-12-13 16:45:57,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 536910 states, 536909 states have (on average 1.0406698341804663) internal successors, (558745), 536909 states have internal predecessors, (558745), 0 states have call successors, (0), 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 16:45:58,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 536910 states to 536910 states and 558745 transitions. [2022-12-13 16:45:58,577 INFO L78 Accepts]: Start accepts. Automaton has 536910 states and 558745 transitions. Word has length 1879 [2022-12-13 16:45:58,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 16:45:58,577 INFO L495 AbstractCegarLoop]: Abstraction has 536910 states and 558745 transitions. [2022-12-13 16:45:58,578 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 219.33333333333334) 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 16:45:58,578 INFO L276 IsEmpty]: Start isEmpty. Operand 536910 states and 558745 transitions. [2022-12-13 16:45:58,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1881 [2022-12-13 16:45:58,612 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 16:45:58,612 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, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-12-13 16:45:58,618 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efee8c50-7475-4553-8e1b-cb3f63690804/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-12-13 16:45:58,813 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efee8c50-7475-4553-8e1b-cb3f63690804/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 16:45:58,815 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 16:45:58,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:45:58,816 INFO L85 PathProgramCache]: Analyzing trace with hash 1340462066, now seen corresponding path program 1 times [2022-12-13 16:45:58,817 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:45:58,817 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1249474787] [2022-12-13 16:45:58,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:45:58,818 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:45:59,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:46:02,719 INFO L134 CoverageAnalysis]: Checked inductivity of 2990 backedges. 1545 proven. 485 refuted. 0 times theorem prover too weak. 960 trivial. 0 not checked. [2022-12-13 16:46:02,719 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:46:02,719 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1249474787] [2022-12-13 16:46:02,719 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1249474787] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 16:46:02,719 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1738814142] [2022-12-13 16:46:02,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:46:02,719 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 16:46:02,719 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efee8c50-7475-4553-8e1b-cb3f63690804/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 16:46:02,720 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efee8c50-7475-4553-8e1b-cb3f63690804/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 16:46:02,721 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efee8c50-7475-4553-8e1b-cb3f63690804/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-12-13 16:46:03,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:46:03,298 INFO L263 TraceCheckSpWp]: Trace formula consists of 2127 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-13 16:46:03,308 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 16:46:04,843 INFO L134 CoverageAnalysis]: Checked inductivity of 2990 backedges. 2030 proven. 0 refuted. 0 times theorem prover too weak. 960 trivial. 0 not checked. [2022-12-13 16:46:04,844 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 16:46:04,844 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1738814142] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:46:04,844 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 16:46:04,844 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 8 [2022-12-13 16:46:04,844 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1757517788] [2022-12-13 16:46:04,844 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:46:04,845 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 16:46:04,845 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:46:04,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 16:46:04,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2022-12-13 16:46:04,846 INFO L87 Difference]: Start difference. First operand 536910 states and 558745 transitions. Second operand has 4 states, 4 states have (on average 350.0) internal successors, (1400), 3 states have internal predecessors, (1400), 0 states have call successors, (0), 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 16:46:14,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 16:46:14,550 INFO L93 Difference]: Finished difference Result 1105223 states and 1150715 transitions. [2022-12-13 16:46:14,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 16:46:14,551 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 350.0) internal successors, (1400), 3 states have internal predecessors, (1400), 0 states have call successors, (0), 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 1880 [2022-12-13 16:46:14,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 16:46:15,218 INFO L225 Difference]: With dead ends: 1105223 [2022-12-13 16:46:15,218 INFO L226 Difference]: Without dead ends: 569666 [2022-12-13 16:46:15,411 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1885 GetRequests, 1878 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2022-12-13 16:46:15,412 INFO L413 NwaCegarLoop]: 596 mSDtfsCounter, 2074 mSDsluCounter, 190 mSDsCounter, 0 mSdLazyCounter, 6972 mSolverCounterSat, 1661 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2074 SdHoareTripleChecker+Valid, 786 SdHoareTripleChecker+Invalid, 8633 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1661 IncrementalHoareTripleChecker+Valid, 6972 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.9s IncrementalHoareTripleChecker+Time [2022-12-13 16:46:15,412 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2074 Valid, 786 Invalid, 8633 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1661 Valid, 6972 Invalid, 0 Unknown, 0 Unchecked, 6.9s Time] [2022-12-13 16:46:16,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 569666 states. [2022-12-13 16:46:20,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 569666 to 560108. [2022-12-13 16:46:20,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 560108 states, 560107 states have (on average 1.0177198285327624) internal successors, (570032), 560107 states have internal predecessors, (570032), 0 states have call successors, (0), 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 16:46:21,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 560108 states to 560108 states and 570032 transitions. [2022-12-13 16:46:21,749 INFO L78 Accepts]: Start accepts. Automaton has 560108 states and 570032 transitions. Word has length 1880 [2022-12-13 16:46:21,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 16:46:21,750 INFO L495 AbstractCegarLoop]: Abstraction has 560108 states and 570032 transitions. [2022-12-13 16:46:21,750 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 350.0) internal successors, (1400), 3 states have internal predecessors, (1400), 0 states have call successors, (0), 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 16:46:21,750 INFO L276 IsEmpty]: Start isEmpty. Operand 560108 states and 570032 transitions. [2022-12-13 16:46:21,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1989 [2022-12-13 16:46:21,794 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 16:46:21,794 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:46:21,799 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efee8c50-7475-4553-8e1b-cb3f63690804/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2022-12-13 16:46:21,995 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efee8c50-7475-4553-8e1b-cb3f63690804/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2022-12-13 16:46:21,995 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 16:46:21,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:46:21,995 INFO L85 PathProgramCache]: Analyzing trace with hash -1166028364, now seen corresponding path program 1 times [2022-12-13 16:46:21,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:46:21,996 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1022360543] [2022-12-13 16:46:21,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:46:21,996 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:46:22,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:46:26,840 INFO L134 CoverageAnalysis]: Checked inductivity of 2083 backedges. 1420 proven. 485 refuted. 0 times theorem prover too weak. 178 trivial. 0 not checked. [2022-12-13 16:46:26,840 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:46:26,840 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1022360543] [2022-12-13 16:46:26,840 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1022360543] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 16:46:26,840 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1989135231] [2022-12-13 16:46:26,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:46:26,841 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 16:46:26,841 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efee8c50-7475-4553-8e1b-cb3f63690804/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 16:46:26,842 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efee8c50-7475-4553-8e1b-cb3f63690804/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 16:46:26,842 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efee8c50-7475-4553-8e1b-cb3f63690804/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-12-13 16:46:27,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:46:27,345 INFO L263 TraceCheckSpWp]: Trace formula consists of 2186 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-13 16:46:27,354 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 16:46:28,137 INFO L134 CoverageAnalysis]: Checked inductivity of 2083 backedges. 1450 proven. 148 refuted. 0 times theorem prover too weak. 485 trivial. 0 not checked. [2022-12-13 16:46:28,137 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 16:46:30,886 INFO L134 CoverageAnalysis]: Checked inductivity of 2083 backedges. 469 proven. 0 refuted. 0 times theorem prover too weak. 1614 trivial. 0 not checked. [2022-12-13 16:46:30,886 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1989135231] provided 1 perfect and 1 imperfect interpolant sequences [2022-12-13 16:46:30,886 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-12-13 16:46:30,887 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6, 5] total 12 [2022-12-13 16:46:30,887 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1528018176] [2022-12-13 16:46:30,887 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:46:30,888 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 16:46:30,888 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:46:30,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 16:46:30,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2022-12-13 16:46:30,889 INFO L87 Difference]: Start difference. First operand 560108 states and 570032 transitions. Second operand has 4 states, 4 states have (on average 215.25) internal successors, (861), 4 states have internal predecessors, (861), 0 states have call successors, (0), 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 16:46:41,391 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.12s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-13 16:46:45,749 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-13 16:46:49,284 WARN L539 Checker$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 16:46:55,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 16:46:55,298 INFO L93 Difference]: Finished difference Result 1258177 states and 1280086 transitions. [2022-12-13 16:46:55,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 16:46:55,299 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 215.25) internal successors, (861), 4 states have internal predecessors, (861), 0 states have call successors, (0), 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 1988 [2022-12-13 16:46:55,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 16:46:56,098 INFO L225 Difference]: With dead ends: 1258177 [2022-12-13 16:46:56,099 INFO L226 Difference]: Without dead ends: 698070 [2022-12-13 16:46:56,460 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3980 GetRequests, 3970 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2022-12-13 16:46:56,460 INFO L413 NwaCegarLoop]: 362 mSDtfsCounter, 3094 mSDsluCounter, 171 mSDsCounter, 0 mSdLazyCounter, 7227 mSolverCounterSat, 1525 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3094 SdHoareTripleChecker+Valid, 533 SdHoareTripleChecker+Invalid, 8754 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1525 IncrementalHoareTripleChecker+Valid, 7227 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 21.2s IncrementalHoareTripleChecker+Time [2022-12-13 16:46:56,461 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3094 Valid, 533 Invalid, 8754 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1525 Valid, 7227 Invalid, 2 Unknown, 0 Unchecked, 21.2s Time] [2022-12-13 16:46:57,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 698070 states. [2022-12-13 16:47:03,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 698070 to 685716. [2022-12-13 16:47:03,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 685716 states, 685715 states have (on average 1.015688733657569) internal successors, (696473), 685715 states have internal predecessors, (696473), 0 states have call successors, (0), 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 16:47:04,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 685716 states to 685716 states and 696473 transitions. [2022-12-13 16:47:04,432 INFO L78 Accepts]: Start accepts. Automaton has 685716 states and 696473 transitions. Word has length 1988 [2022-12-13 16:47:04,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 16:47:04,433 INFO L495 AbstractCegarLoop]: Abstraction has 685716 states and 696473 transitions. [2022-12-13 16:47:04,433 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 215.25) internal successors, (861), 4 states have internal predecessors, (861), 0 states have call successors, (0), 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 16:47:04,433 INFO L276 IsEmpty]: Start isEmpty. Operand 685716 states and 696473 transitions. [2022-12-13 16:47:04,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2002 [2022-12-13 16:47:04,468 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 16:47:04,469 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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:47:04,474 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efee8c50-7475-4553-8e1b-cb3f63690804/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2022-12-13 16:47:04,669 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efee8c50-7475-4553-8e1b-cb3f63690804/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2022-12-13 16:47:04,671 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 16:47:04,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:47:04,672 INFO L85 PathProgramCache]: Analyzing trace with hash -1557826401, now seen corresponding path program 1 times [2022-12-13 16:47:04,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:47:04,673 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [615246628] [2022-12-13 16:47:04,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:47:04,674 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:47:04,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:47:11,371 INFO L134 CoverageAnalysis]: Checked inductivity of 2780 backedges. 1559 proven. 1049 refuted. 0 times theorem prover too weak. 172 trivial. 0 not checked. [2022-12-13 16:47:11,371 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:47:11,371 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [615246628] [2022-12-13 16:47:11,371 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [615246628] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 16:47:11,371 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [142753644] [2022-12-13 16:47:11,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:47:11,372 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 16:47:11,372 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efee8c50-7475-4553-8e1b-cb3f63690804/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 16:47:11,373 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efee8c50-7475-4553-8e1b-cb3f63690804/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 16:47:11,373 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efee8c50-7475-4553-8e1b-cb3f63690804/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-12-13 16:47:11,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:47:11,815 INFO L263 TraceCheckSpWp]: Trace formula consists of 2216 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-13 16:47:11,825 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 16:47:12,319 INFO L134 CoverageAnalysis]: Checked inductivity of 2780 backedges. 1923 proven. 0 refuted. 0 times theorem prover too weak. 857 trivial. 0 not checked. [2022-12-13 16:47:12,319 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 16:47:12,319 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [142753644] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:47:12,319 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 16:47:12,319 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [10] total 12 [2022-12-13 16:47:12,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126882442] [2022-12-13 16:47:12,319 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:47:12,320 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 16:47:12,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:47:12,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 16:47:12,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2022-12-13 16:47:12,321 INFO L87 Difference]: Start difference. First operand 685716 states and 696473 transitions. Second operand has 3 states, 3 states have (on average 439.0) internal successors, (1317), 3 states have internal predecessors, (1317), 0 states have call successors, (0), 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 16:47:19,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 16:47:19,151 INFO L93 Difference]: Finished difference Result 1371435 states and 1392927 transitions. [2022-12-13 16:47:19,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 16:47:19,152 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 439.0) internal successors, (1317), 3 states have internal predecessors, (1317), 0 states have call successors, (0), 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 2001 [2022-12-13 16:47:19,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 16:47:19,975 INFO L225 Difference]: With dead ends: 1371435 [2022-12-13 16:47:19,975 INFO L226 Difference]: Without dead ends: 687086 [2022-12-13 16:47:20,244 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2011 GetRequests, 2001 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2022-12-13 16:47:20,245 INFO L413 NwaCegarLoop]: 2334 mSDtfsCounter, 1128 mSDsluCounter, 155 mSDsCounter, 0 mSdLazyCounter, 3490 mSolverCounterSat, 151 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1128 SdHoareTripleChecker+Valid, 2489 SdHoareTripleChecker+Invalid, 3641 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 151 IncrementalHoareTripleChecker+Valid, 3490 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2022-12-13 16:47:20,245 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1128 Valid, 2489 Invalid, 3641 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [151 Valid, 3490 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2022-12-13 16:47:21,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 687086 states. [2022-12-13 16:47:27,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 687086 to 684351. [2022-12-13 16:47:27,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 684351 states, 684350 states have (on average 1.0155739022430044) internal successors, (695008), 684350 states have internal predecessors, (695008), 0 states have call successors, (0), 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 16:47:28,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 684351 states to 684351 states and 695008 transitions. [2022-12-13 16:47:28,211 INFO L78 Accepts]: Start accepts. Automaton has 684351 states and 695008 transitions. Word has length 2001 [2022-12-13 16:47:28,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 16:47:28,211 INFO L495 AbstractCegarLoop]: Abstraction has 684351 states and 695008 transitions. [2022-12-13 16:47:28,212 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 439.0) internal successors, (1317), 3 states have internal predecessors, (1317), 0 states have call successors, (0), 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 16:47:28,212 INFO L276 IsEmpty]: Start isEmpty. Operand 684351 states and 695008 transitions. [2022-12-13 16:47:28,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2314 [2022-12-13 16:47:28,283 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 16:47:28,284 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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2022-12-13 16:47:28,289 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efee8c50-7475-4553-8e1b-cb3f63690804/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2022-12-13 16:47:28,484 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efee8c50-7475-4553-8e1b-cb3f63690804/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 16:47:28,486 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 16:47:28,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:47:28,490 INFO L85 PathProgramCache]: Analyzing trace with hash -2117556344, now seen corresponding path program 1 times [2022-12-13 16:47:28,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:47:28,491 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1871686762] [2022-12-13 16:47:28,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:47:28,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:47:28,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat