./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem16_label03.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4240e5d-fd72-47e0-89ba-30a466f551e7/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4240e5d-fd72-47e0-89ba-30a466f551e7/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_b4240e5d-fd72-47e0-89ba-30a466f551e7/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4240e5d-fd72-47e0-89ba-30a466f551e7/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem16_label03.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4240e5d-fd72-47e0-89ba-30a466f551e7/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_b4240e5d-fd72-47e0-89ba-30a466f551e7/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 68b04b3e92efca531819e21670e21ddf77866a9f1ae7d2feefbb783a67657ca9 --- 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 17:27:30,208 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 17:27:30,210 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 17:27:30,230 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 17:27:30,230 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 17:27:30,232 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 17:27:30,234 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 17:27:30,235 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 17:27:30,236 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 17:27:30,236 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 17:27:30,237 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 17:27:30,238 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 17:27:30,249 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 17:27:30,250 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 17:27:30,251 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 17:27:30,252 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 17:27:30,253 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 17:27:30,254 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 17:27:30,255 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 17:27:30,257 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 17:27:30,258 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 17:27:30,259 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 17:27:30,260 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 17:27:30,261 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 17:27:30,273 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 17:27:30,273 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 17:27:30,274 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 17:27:30,275 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 17:27:30,275 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 17:27:30,276 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 17:27:30,276 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 17:27:30,277 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 17:27:30,278 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 17:27:30,278 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 17:27:30,279 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 17:27:30,279 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 17:27:30,280 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 17:27:30,280 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 17:27:30,280 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 17:27:30,281 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 17:27:30,282 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 17:27:30,282 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4240e5d-fd72-47e0-89ba-30a466f551e7/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-12-13 17:27:30,309 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 17:27:30,309 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 17:27:30,310 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 17:27:30,310 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 17:27:30,310 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 17:27:30,311 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 17:27:30,311 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 17:27:30,311 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 17:27:30,312 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 17:27:30,312 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 17:27:30,312 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 17:27:30,312 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 17:27:30,312 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 17:27:30,312 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 17:27:30,313 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 17:27:30,313 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 17:27:30,313 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 17:27:30,313 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 17:27:30,313 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 17:27:30,313 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 17:27:30,313 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 17:27:30,314 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 17:27:30,314 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 17:27:30,314 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 17:27:30,314 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 17:27:30,314 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 17:27:30,314 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 17:27:30,315 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 17:27:30,315 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 17:27:30,315 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 17:27:30,315 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 17:27:30,315 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 17:27:30,315 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 17:27:30,315 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 17:27:30,316 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 17:27:30,316 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_b4240e5d-fd72-47e0-89ba-30a466f551e7/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4240e5d-fd72-47e0-89ba-30a466f551e7/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 68b04b3e92efca531819e21670e21ddf77866a9f1ae7d2feefbb783a67657ca9 [2022-12-13 17:27:30,507 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 17:27:30,527 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 17:27:30,529 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 17:27:30,530 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 17:27:30,530 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 17:27:30,532 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4240e5d-fd72-47e0-89ba-30a466f551e7/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/eca-rers2012/Problem16_label03.c [2022-12-13 17:27:33,165 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 17:27:33,413 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 17:27:33,413 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4240e5d-fd72-47e0-89ba-30a466f551e7/sv-benchmarks/c/eca-rers2012/Problem16_label03.c [2022-12-13 17:27:33,430 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4240e5d-fd72-47e0-89ba-30a466f551e7/bin/uautomizer-uyxdKDjOR8/data/861aa8f99/18abd9d870824b4d81c47b812bb3e1c9/FLAGfc232c1c5 [2022-12-13 17:27:33,445 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4240e5d-fd72-47e0-89ba-30a466f551e7/bin/uautomizer-uyxdKDjOR8/data/861aa8f99/18abd9d870824b4d81c47b812bb3e1c9 [2022-12-13 17:27:33,447 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 17:27:33,449 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 17:27:33,450 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 17:27:33,450 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 17:27:33,454 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 17:27:33,454 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 05:27:33" (1/1) ... [2022-12-13 17:27:33,455 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@25db3070 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:27:33, skipping insertion in model container [2022-12-13 17:27:33,455 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 05:27:33" (1/1) ... [2022-12-13 17:27:33,463 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 17:27:33,519 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 17:27:33,657 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_b4240e5d-fd72-47e0-89ba-30a466f551e7/sv-benchmarks/c/eca-rers2012/Problem16_label03.c[1025,1038] [2022-12-13 17:27:33,915 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 17:27:33,923 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 17:27:33,932 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_b4240e5d-fd72-47e0-89ba-30a466f551e7/sv-benchmarks/c/eca-rers2012/Problem16_label03.c[1025,1038] [2022-12-13 17:27:34,057 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 17:27:34,068 INFO L208 MainTranslator]: Completed translation [2022-12-13 17:27:34,069 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:27:34 WrapperNode [2022-12-13 17:27:34,069 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 17:27:34,070 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 17:27:34,070 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 17:27:34,070 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 17:27:34,075 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:27:34" (1/1) ... [2022-12-13 17:27:34,096 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:27:34" (1/1) ... [2022-12-13 17:27:34,187 INFO L138 Inliner]: procedures = 15, calls = 9, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 1768 [2022-12-13 17:27:34,187 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 17:27:34,188 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 17:27:34,188 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 17:27:34,188 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 17:27:34,197 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:27:34" (1/1) ... [2022-12-13 17:27:34,197 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:27:34" (1/1) ... [2022-12-13 17:27:34,208 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:27:34" (1/1) ... [2022-12-13 17:27:34,208 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:27:34" (1/1) ... [2022-12-13 17:27:34,246 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:27:34" (1/1) ... [2022-12-13 17:27:34,255 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:27:34" (1/1) ... [2022-12-13 17:27:34,274 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:27:34" (1/1) ... [2022-12-13 17:27:34,283 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:27:34" (1/1) ... [2022-12-13 17:27:34,303 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 17:27:34,304 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 17:27:34,304 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 17:27:34,304 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 17:27:34,305 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:27:34" (1/1) ... [2022-12-13 17:27:34,311 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 17:27:34,320 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4240e5d-fd72-47e0-89ba-30a466f551e7/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:27:34,332 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4240e5d-fd72-47e0-89ba-30a466f551e7/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 17:27:34,335 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4240e5d-fd72-47e0-89ba-30a466f551e7/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 17:27:34,365 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 17:27:34,366 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 17:27:34,366 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 17:27:34,366 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 17:27:34,422 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 17:27:34,424 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 17:27:36,062 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 17:27:36,081 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 17:27:36,081 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-12-13 17:27:36,084 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 05:27:36 BoogieIcfgContainer [2022-12-13 17:27:36,084 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 17:27:36,087 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 17:27:36,087 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 17:27:36,089 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 17:27:36,090 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 05:27:33" (1/3) ... [2022-12-13 17:27:36,090 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13bf8b88 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 05:27:36, skipping insertion in model container [2022-12-13 17:27:36,090 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:27:34" (2/3) ... [2022-12-13 17:27:36,091 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13bf8b88 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 05:27:36, skipping insertion in model container [2022-12-13 17:27:36,091 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 05:27:36" (3/3) ... [2022-12-13 17:27:36,092 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem16_label03.c [2022-12-13 17:27:36,107 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 17:27:36,107 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-13 17:27:36,164 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 17:27:36,169 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;@3debb53e, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 17:27:36,170 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-12-13 17:27:36,174 INFO L276 IsEmpty]: Start isEmpty. Operand has 396 states, 394 states have (on average 1.8350253807106598) internal successors, (723), 395 states have internal predecessors, (723), 0 states have call successors, (0), 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 17:27:36,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-12-13 17:27:36,179 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:27:36,180 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-12-13 17:27:36,180 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 17:27:36,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:27:36,186 INFO L85 PathProgramCache]: Analyzing trace with hash 889694410, now seen corresponding path program 1 times [2022-12-13 17:27:36,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:27:36,192 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1339460659] [2022-12-13 17:27:36,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:27:36,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:27:36,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:27:36,344 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 17:27:36,344 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:27:36,344 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1339460659] [2022-12-13 17:27:36,345 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1339460659] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:27:36,345 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:27:36,345 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 17:27:36,346 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [39441033] [2022-12-13 17:27:36,347 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:27:36,350 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 17:27:36,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:27:36,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 17:27:36,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 17:27:36,372 INFO L87 Difference]: Start difference. First operand has 396 states, 394 states have (on average 1.8350253807106598) internal successors, (723), 395 states have internal predecessors, (723), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 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 17:27:37,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:27:37,874 INFO L93 Difference]: Finished difference Result 1122 states and 2103 transitions. [2022-12-13 17:27:37,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 17:27:37,876 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 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 6 [2022-12-13 17:27:37,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 17:27:37,885 INFO L225 Difference]: With dead ends: 1122 [2022-12-13 17:27:37,885 INFO L226 Difference]: Without dead ends: 662 [2022-12-13 17:27:37,888 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 17:27:37,890 INFO L413 NwaCegarLoop]: 215 mSDtfsCounter, 354 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 1054 mSolverCounterSat, 251 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 354 SdHoareTripleChecker+Valid, 223 SdHoareTripleChecker+Invalid, 1305 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 251 IncrementalHoareTripleChecker+Valid, 1054 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-12-13 17:27:37,891 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [354 Valid, 223 Invalid, 1305 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [251 Valid, 1054 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-12-13 17:27:37,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 662 states. [2022-12-13 17:27:37,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 662 to 662. [2022-12-13 17:27:37,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 662 states, 661 states have (on average 1.5824508320726172) internal successors, (1046), 661 states have internal predecessors, (1046), 0 states have call successors, (0), 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 17:27:37,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 662 states to 662 states and 1046 transitions. [2022-12-13 17:27:37,939 INFO L78 Accepts]: Start accepts. Automaton has 662 states and 1046 transitions. Word has length 6 [2022-12-13 17:27:37,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 17:27:37,939 INFO L495 AbstractCegarLoop]: Abstraction has 662 states and 1046 transitions. [2022-12-13 17:27:37,939 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 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 17:27:37,939 INFO L276 IsEmpty]: Start isEmpty. Operand 662 states and 1046 transitions. [2022-12-13 17:27:37,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-12-13 17:27:37,940 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:27:37,940 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-12-13 17:27:37,941 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 17:27:37,941 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 17:27:37,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:27:37,941 INFO L85 PathProgramCache]: Analyzing trace with hash -1927918847, now seen corresponding path program 1 times [2022-12-13 17:27:37,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:27:37,942 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1544987130] [2022-12-13 17:27:37,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:27:37,942 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:27:37,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:27:38,100 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 17:27:38,101 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:27:38,101 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1544987130] [2022-12-13 17:27:38,101 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1544987130] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:27:38,101 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:27:38,101 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 17:27:38,101 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1157651396] [2022-12-13 17:27:38,102 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:27:38,103 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 17:27:38,103 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:27:38,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 17:27:38,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 17:27:38,104 INFO L87 Difference]: Start difference. First operand 662 states and 1046 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 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 17:27:39,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:27:39,234 INFO L93 Difference]: Finished difference Result 1651 states and 2539 transitions. [2022-12-13 17:27:39,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 17:27:39,235 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 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 77 [2022-12-13 17:27:39,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 17:27:39,240 INFO L225 Difference]: With dead ends: 1651 [2022-12-13 17:27:39,240 INFO L226 Difference]: Without dead ends: 991 [2022-12-13 17:27:39,242 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 17:27:39,242 INFO L413 NwaCegarLoop]: 73 mSDtfsCounter, 338 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 882 mSolverCounterSat, 268 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 338 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 1150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 268 IncrementalHoareTripleChecker+Valid, 882 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-12-13 17:27:39,243 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [338 Valid, 77 Invalid, 1150 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [268 Valid, 882 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-12-13 17:27:39,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 991 states. [2022-12-13 17:27:39,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 991 to 991. [2022-12-13 17:27:39,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 991 states, 990 states have (on average 1.3767676767676769) internal successors, (1363), 990 states have internal predecessors, (1363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:27:39,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 991 states to 991 states and 1363 transitions. [2022-12-13 17:27:39,265 INFO L78 Accepts]: Start accepts. Automaton has 991 states and 1363 transitions. Word has length 77 [2022-12-13 17:27:39,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 17:27:39,265 INFO L495 AbstractCegarLoop]: Abstraction has 991 states and 1363 transitions. [2022-12-13 17:27:39,265 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 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 17:27:39,265 INFO L276 IsEmpty]: Start isEmpty. Operand 991 states and 1363 transitions. [2022-12-13 17:27:39,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-12-13 17:27:39,266 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:27:39,266 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-12-13 17:27:39,266 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-13 17:27:39,267 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 17:27:39,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:27:39,267 INFO L85 PathProgramCache]: Analyzing trace with hash 1360524730, now seen corresponding path program 1 times [2022-12-13 17:27:39,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:27:39,267 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1579164100] [2022-12-13 17:27:39,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:27:39,267 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:27:39,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:27:39,357 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 17:27:39,357 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:27:39,357 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1579164100] [2022-12-13 17:27:39,357 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1579164100] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:27:39,358 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:27:39,358 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 17:27:39,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1590442197] [2022-12-13 17:27:39,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:27:39,359 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 17:27:39,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:27:39,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 17:27:39,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 17:27:39,360 INFO L87 Difference]: Start difference. First operand 991 states and 1363 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 2 states have internal predecessors, (78), 0 states have call successors, (0), 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 17:27:40,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:27:40,435 INFO L93 Difference]: Finished difference Result 2967 states and 4084 transitions. [2022-12-13 17:27:40,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 17:27:40,436 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 2 states have internal predecessors, (78), 0 states have call successors, (0), 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 78 [2022-12-13 17:27:40,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 17:27:40,442 INFO L225 Difference]: With dead ends: 2967 [2022-12-13 17:27:40,442 INFO L226 Difference]: Without dead ends: 1978 [2022-12-13 17:27:40,443 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 17:27:40,445 INFO L413 NwaCegarLoop]: 206 mSDtfsCounter, 287 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 806 mSolverCounterSat, 390 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 287 SdHoareTripleChecker+Valid, 211 SdHoareTripleChecker+Invalid, 1196 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 390 IncrementalHoareTripleChecker+Valid, 806 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-12-13 17:27:40,445 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [287 Valid, 211 Invalid, 1196 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [390 Valid, 806 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-12-13 17:27:40,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1978 states. [2022-12-13 17:27:40,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1978 to 1978. [2022-12-13 17:27:40,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1978 states, 1977 states have (on average 1.2463328275164391) internal successors, (2464), 1977 states have internal predecessors, (2464), 0 states have call successors, (0), 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 17:27:40,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1978 states to 1978 states and 2464 transitions. [2022-12-13 17:27:40,487 INFO L78 Accepts]: Start accepts. Automaton has 1978 states and 2464 transitions. Word has length 78 [2022-12-13 17:27:40,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 17:27:40,488 INFO L495 AbstractCegarLoop]: Abstraction has 1978 states and 2464 transitions. [2022-12-13 17:27:40,488 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 2 states have internal predecessors, (78), 0 states have call successors, (0), 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 17:27:40,488 INFO L276 IsEmpty]: Start isEmpty. Operand 1978 states and 2464 transitions. [2022-12-13 17:27:40,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2022-12-13 17:27:40,493 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:27:40,493 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 17:27:40,493 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-13 17:27:40,493 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 17:27:40,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:27:40,494 INFO L85 PathProgramCache]: Analyzing trace with hash -640794733, now seen corresponding path program 1 times [2022-12-13 17:27:40,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:27:40,494 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [925149386] [2022-12-13 17:27:40,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:27:40,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:27:40,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:27:40,685 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2022-12-13 17:27:40,685 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:27:40,685 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [925149386] [2022-12-13 17:27:40,686 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [925149386] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:27:40,686 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:27:40,686 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 17:27:40,686 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [573694165] [2022-12-13 17:27:40,686 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:27:40,687 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 17:27:40,687 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:27:40,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 17:27:40,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 17:27:40,688 INFO L87 Difference]: Start difference. First operand 1978 states and 2464 transitions. Second operand has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 2 states have internal predecessors, (95), 0 states have call successors, (0), 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 17:27:41,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:27:41,689 INFO L93 Difference]: Finished difference Result 4612 states and 5849 transitions. [2022-12-13 17:27:41,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 17:27:41,689 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 2 states have internal predecessors, (95), 0 states have call successors, (0), 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 161 [2022-12-13 17:27:41,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 17:27:41,698 INFO L225 Difference]: With dead ends: 4612 [2022-12-13 17:27:41,698 INFO L226 Difference]: Without dead ends: 2636 [2022-12-13 17:27:41,700 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 17:27:41,701 INFO L413 NwaCegarLoop]: 152 mSDtfsCounter, 358 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 811 mSolverCounterSat, 307 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 358 SdHoareTripleChecker+Valid, 156 SdHoareTripleChecker+Invalid, 1118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 307 IncrementalHoareTripleChecker+Valid, 811 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-12-13 17:27:41,702 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [358 Valid, 156 Invalid, 1118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [307 Valid, 811 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-12-13 17:27:41,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2636 states. [2022-12-13 17:27:41,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2636 to 2307. [2022-12-13 17:27:41,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2307 states, 2306 states have (on average 1.2350390286209887) internal successors, (2848), 2306 states have internal predecessors, (2848), 0 states have call successors, (0), 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 17:27:41,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2307 states to 2307 states and 2848 transitions. [2022-12-13 17:27:41,740 INFO L78 Accepts]: Start accepts. Automaton has 2307 states and 2848 transitions. Word has length 161 [2022-12-13 17:27:41,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 17:27:41,741 INFO L495 AbstractCegarLoop]: Abstraction has 2307 states and 2848 transitions. [2022-12-13 17:27:41,741 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 2 states have internal predecessors, (95), 0 states have call successors, (0), 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 17:27:41,741 INFO L276 IsEmpty]: Start isEmpty. Operand 2307 states and 2848 transitions. [2022-12-13 17:27:41,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 339 [2022-12-13 17:27:41,746 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:27:41,746 INFO L195 NwaCegarLoop]: trace histogram [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, 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] [2022-12-13 17:27:41,746 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-13 17:27:41,746 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 17:27:41,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:27:41,747 INFO L85 PathProgramCache]: Analyzing trace with hash -1617279391, now seen corresponding path program 1 times [2022-12-13 17:27:41,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:27:41,747 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1024687082] [2022-12-13 17:27:41,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:27:41,747 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:27:41,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:27:42,013 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 193 proven. 0 refuted. 0 times theorem prover too weak. 119 trivial. 0 not checked. [2022-12-13 17:27:42,014 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:27:42,014 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1024687082] [2022-12-13 17:27:42,014 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1024687082] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:27:42,014 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:27:42,014 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 17:27:42,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [429314101] [2022-12-13 17:27:42,015 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:27:42,015 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 17:27:42,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:27:42,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 17:27:42,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 17:27:42,016 INFO L87 Difference]: Start difference. First operand 2307 states and 2848 transitions. Second operand has 3 states, 3 states have (on average 75.0) internal successors, (225), 2 states have internal predecessors, (225), 0 states have call successors, (0), 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 17:27:43,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:27:43,483 INFO L93 Difference]: Finished difference Result 6915 states and 8539 transitions. [2022-12-13 17:27:43,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 17:27:43,484 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 75.0) internal successors, (225), 2 states have internal predecessors, (225), 0 states have call successors, (0), 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 338 [2022-12-13 17:27:43,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 17:27:43,491 INFO L225 Difference]: With dead ends: 6915 [2022-12-13 17:27:43,491 INFO L226 Difference]: Without dead ends: 4610 [2022-12-13 17:27:43,493 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 17:27:43,494 INFO L413 NwaCegarLoop]: 115 mSDtfsCounter, 254 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 939 mSolverCounterSat, 352 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 254 SdHoareTripleChecker+Valid, 119 SdHoareTripleChecker+Invalid, 1291 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 352 IncrementalHoareTripleChecker+Valid, 939 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-12-13 17:27:43,494 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [254 Valid, 119 Invalid, 1291 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [352 Valid, 939 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-12-13 17:27:43,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4610 states. [2022-12-13 17:27:43,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4610 to 4610. [2022-12-13 17:27:43,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4610 states, 4609 states have (on average 1.206552397483185) internal successors, (5561), 4609 states have internal predecessors, (5561), 0 states have call successors, (0), 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 17:27:43,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4610 states to 4610 states and 5561 transitions. [2022-12-13 17:27:43,569 INFO L78 Accepts]: Start accepts. Automaton has 4610 states and 5561 transitions. Word has length 338 [2022-12-13 17:27:43,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 17:27:43,570 INFO L495 AbstractCegarLoop]: Abstraction has 4610 states and 5561 transitions. [2022-12-13 17:27:43,570 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 75.0) internal successors, (225), 2 states have internal predecessors, (225), 0 states have call successors, (0), 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 17:27:43,570 INFO L276 IsEmpty]: Start isEmpty. Operand 4610 states and 5561 transitions. [2022-12-13 17:27:43,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 363 [2022-12-13 17:27:43,578 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:27:43,579 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 17:27:43,579 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-13 17:27:43,579 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 17:27:43,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:27:43,580 INFO L85 PathProgramCache]: Analyzing trace with hash -913889575, now seen corresponding path program 1 times [2022-12-13 17:27:43,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:27:43,580 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2072607844] [2022-12-13 17:27:43,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:27:43,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:27:43,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:27:44,072 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 113 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-13 17:27:44,072 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:27:44,072 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2072607844] [2022-12-13 17:27:44,072 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2072607844] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:27:44,072 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:27:44,072 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 17:27:44,072 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1556174532] [2022-12-13 17:27:44,072 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:27:44,073 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 17:27:44,073 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:27:44,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 17:27:44,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 17:27:44,074 INFO L87 Difference]: Start difference. First operand 4610 states and 5561 transitions. Second operand has 4 states, 4 states have (on average 89.75) internal successors, (359), 3 states have internal predecessors, (359), 0 states have call successors, (0), 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 17:27:45,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:27:45,299 INFO L93 Difference]: Finished difference Result 9591 states and 11505 transitions. [2022-12-13 17:27:45,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 17:27:45,299 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 89.75) internal successors, (359), 3 states have internal predecessors, (359), 0 states have call successors, (0), 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 362 [2022-12-13 17:27:45,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 17:27:45,307 INFO L225 Difference]: With dead ends: 9591 [2022-12-13 17:27:45,307 INFO L226 Difference]: Without dead ends: 4983 [2022-12-13 17:27:45,311 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 17:27:45,311 INFO L413 NwaCegarLoop]: 271 mSDtfsCounter, 175 mSDsluCounter, 100 mSDsCounter, 0 mSdLazyCounter, 1238 mSolverCounterSat, 197 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 175 SdHoareTripleChecker+Valid, 371 SdHoareTripleChecker+Invalid, 1435 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 197 IncrementalHoareTripleChecker+Valid, 1238 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-12-13 17:27:45,312 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [175 Valid, 371 Invalid, 1435 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [197 Valid, 1238 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-12-13 17:27:45,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4983 states. [2022-12-13 17:27:45,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4983 to 4939. [2022-12-13 17:27:45,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4939 states, 4938 states have (on average 1.194005670311867) internal successors, (5896), 4938 states have internal predecessors, (5896), 0 states have call successors, (0), 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 17:27:45,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4939 states to 4939 states and 5896 transitions. [2022-12-13 17:27:45,370 INFO L78 Accepts]: Start accepts. Automaton has 4939 states and 5896 transitions. Word has length 362 [2022-12-13 17:27:45,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 17:27:45,371 INFO L495 AbstractCegarLoop]: Abstraction has 4939 states and 5896 transitions. [2022-12-13 17:27:45,371 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 89.75) internal successors, (359), 3 states have internal predecessors, (359), 0 states have call successors, (0), 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 17:27:45,372 INFO L276 IsEmpty]: Start isEmpty. Operand 4939 states and 5896 transitions. [2022-12-13 17:27:45,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 450 [2022-12-13 17:27:45,377 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:27:45,377 INFO L195 NwaCegarLoop]: trace histogram [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, 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] [2022-12-13 17:27:45,377 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-13 17:27:45,378 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 17:27:45,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:27:45,378 INFO L85 PathProgramCache]: Analyzing trace with hash -734406808, now seen corresponding path program 1 times [2022-12-13 17:27:45,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:27:45,378 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2096700218] [2022-12-13 17:27:45,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:27:45,378 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:27:45,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:27:45,799 INFO L134 CoverageAnalysis]: Checked inductivity of 294 backedges. 238 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2022-12-13 17:27:45,800 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:27:45,800 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2096700218] [2022-12-13 17:27:45,800 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2096700218] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:27:45,800 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:27:45,800 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-13 17:27:45,800 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2144647390] [2022-12-13 17:27:45,800 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:27:45,800 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 17:27:45,800 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:27:45,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 17:27:45,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-12-13 17:27:45,801 INFO L87 Difference]: Start difference. First operand 4939 states and 5896 transitions. Second operand has 7 states, 7 states have (on average 56.42857142857143) internal successors, (395), 6 states have internal predecessors, (395), 0 states have call successors, (0), 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 17:27:47,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:27:47,435 INFO L93 Difference]: Finished difference Result 9406 states and 11302 transitions. [2022-12-13 17:27:47,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 17:27:47,436 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 56.42857142857143) internal successors, (395), 6 states have internal predecessors, (395), 0 states have call successors, (0), 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 449 [2022-12-13 17:27:47,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 17:27:47,442 INFO L225 Difference]: With dead ends: 9406 [2022-12-13 17:27:47,442 INFO L226 Difference]: Without dead ends: 4610 [2022-12-13 17:27:47,445 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-12-13 17:27:47,445 INFO L413 NwaCegarLoop]: 263 mSDtfsCounter, 315 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 1888 mSolverCounterSat, 645 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 315 SdHoareTripleChecker+Valid, 289 SdHoareTripleChecker+Invalid, 2533 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 645 IncrementalHoareTripleChecker+Valid, 1888 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-12-13 17:27:47,445 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [315 Valid, 289 Invalid, 2533 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [645 Valid, 1888 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-12-13 17:27:47,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4610 states. [2022-12-13 17:27:47,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4610 to 4610. [2022-12-13 17:27:47,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4610 states, 4609 states have (on average 1.0744196137990887) internal successors, (4952), 4609 states have internal predecessors, (4952), 0 states have call successors, (0), 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 17:27:47,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4610 states to 4610 states and 4952 transitions. [2022-12-13 17:27:47,490 INFO L78 Accepts]: Start accepts. Automaton has 4610 states and 4952 transitions. Word has length 449 [2022-12-13 17:27:47,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 17:27:47,491 INFO L495 AbstractCegarLoop]: Abstraction has 4610 states and 4952 transitions. [2022-12-13 17:27:47,491 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 56.42857142857143) internal successors, (395), 6 states have internal predecessors, (395), 0 states have call successors, (0), 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 17:27:47,491 INFO L276 IsEmpty]: Start isEmpty. Operand 4610 states and 4952 transitions. [2022-12-13 17:27:47,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 478 [2022-12-13 17:27:47,497 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:27:47,498 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-12-13 17:27:47,498 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-13 17:27:47,498 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 17:27:47,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:27:47,498 INFO L85 PathProgramCache]: Analyzing trace with hash 1783293130, now seen corresponding path program 1 times [2022-12-13 17:27:47,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:27:47,499 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2094703819] [2022-12-13 17:27:47,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:27:47,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:27:47,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:27:47,773 INFO L134 CoverageAnalysis]: Checked inductivity of 356 backedges. 232 proven. 0 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2022-12-13 17:27:47,773 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:27:47,773 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2094703819] [2022-12-13 17:27:47,773 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2094703819] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:27:47,773 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:27:47,773 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 17:27:47,774 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1290934260] [2022-12-13 17:27:47,774 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:27:47,774 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 17:27:47,775 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:27:47,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 17:27:47,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 17:27:47,775 INFO L87 Difference]: Start difference. First operand 4610 states and 4952 transitions. Second operand has 3 states, 3 states have (on average 118.0) internal successors, (354), 3 states have internal predecessors, (354), 0 states have call successors, (0), 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 17:27:48,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:27:48,629 INFO L93 Difference]: Finished difference Result 11192 states and 12126 transitions. [2022-12-13 17:27:48,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 17:27:48,630 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 118.0) internal successors, (354), 3 states have internal predecessors, (354), 0 states have call successors, (0), 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 477 [2022-12-13 17:27:48,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 17:27:48,644 INFO L225 Difference]: With dead ends: 11192 [2022-12-13 17:27:48,644 INFO L226 Difference]: Without dead ends: 6913 [2022-12-13 17:27:48,647 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 17:27:48,648 INFO L413 NwaCegarLoop]: 428 mSDtfsCounter, 219 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 763 mSolverCounterSat, 101 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 219 SdHoareTripleChecker+Valid, 434 SdHoareTripleChecker+Invalid, 864 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 101 IncrementalHoareTripleChecker+Valid, 763 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-12-13 17:27:48,648 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [219 Valid, 434 Invalid, 864 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [101 Valid, 763 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-12-13 17:27:48,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6913 states. [2022-12-13 17:27:48,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6913 to 6584. [2022-12-13 17:27:48,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6584 states, 6583 states have (on average 1.0589396931490203) internal successors, (6971), 6583 states have internal predecessors, (6971), 0 states have call successors, (0), 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 17:27:48,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6584 states to 6584 states and 6971 transitions. [2022-12-13 17:27:48,724 INFO L78 Accepts]: Start accepts. Automaton has 6584 states and 6971 transitions. Word has length 477 [2022-12-13 17:27:48,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 17:27:48,725 INFO L495 AbstractCegarLoop]: Abstraction has 6584 states and 6971 transitions. [2022-12-13 17:27:48,725 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 118.0) internal successors, (354), 3 states have internal predecessors, (354), 0 states have call successors, (0), 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 17:27:48,725 INFO L276 IsEmpty]: Start isEmpty. Operand 6584 states and 6971 transitions. [2022-12-13 17:27:48,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 541 [2022-12-13 17:27:48,729 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:27:48,730 INFO L195 NwaCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 17:27:48,730 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-13 17:27:48,730 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 17:27:48,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:27:48,730 INFO L85 PathProgramCache]: Analyzing trace with hash -852118930, now seen corresponding path program 1 times [2022-12-13 17:27:48,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:27:48,731 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [386385960] [2022-12-13 17:27:48,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:27:48,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:27:48,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:27:48,993 INFO L134 CoverageAnalysis]: Checked inductivity of 448 backedges. 444 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-13 17:27:48,993 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:27:48,993 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [386385960] [2022-12-13 17:27:48,993 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [386385960] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:27:48,993 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:27:48,994 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 17:27:48,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1857498746] [2022-12-13 17:27:48,994 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:27:48,995 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 17:27:48,995 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:27:48,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 17:27:48,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 17:27:48,996 INFO L87 Difference]: Start difference. First operand 6584 states and 6971 transitions. Second operand has 3 states, 3 states have (on average 179.0) internal successors, (537), 3 states have internal predecessors, (537), 0 states have call successors, (0), 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 17:27:49,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:27:49,741 INFO L93 Difference]: Finished difference Result 15140 states and 16150 transitions. [2022-12-13 17:27:49,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 17:27:49,742 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 179.0) internal successors, (537), 3 states have internal predecessors, (537), 0 states have call successors, (0), 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 540 [2022-12-13 17:27:49,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 17:27:49,760 INFO L225 Difference]: With dead ends: 15140 [2022-12-13 17:27:49,760 INFO L226 Difference]: Without dead ends: 8887 [2022-12-13 17:27:49,764 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 17:27:49,764 INFO L413 NwaCegarLoop]: 413 mSDtfsCounter, 178 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 768 mSolverCounterSat, 94 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 178 SdHoareTripleChecker+Valid, 418 SdHoareTripleChecker+Invalid, 862 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 768 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-12-13 17:27:49,764 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [178 Valid, 418 Invalid, 862 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [94 Valid, 768 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-12-13 17:27:49,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8887 states. [2022-12-13 17:27:49,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8887 to 8887. [2022-12-13 17:27:49,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8887 states, 8886 states have (on average 1.0525545802385776) internal successors, (9353), 8886 states have internal predecessors, (9353), 0 states have call successors, (0), 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 17:27:49,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8887 states to 8887 states and 9353 transitions. [2022-12-13 17:27:49,847 INFO L78 Accepts]: Start accepts. Automaton has 8887 states and 9353 transitions. Word has length 540 [2022-12-13 17:27:49,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 17:27:49,848 INFO L495 AbstractCegarLoop]: Abstraction has 8887 states and 9353 transitions. [2022-12-13 17:27:49,848 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 179.0) internal successors, (537), 3 states have internal predecessors, (537), 0 states have call successors, (0), 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 17:27:49,848 INFO L276 IsEmpty]: Start isEmpty. Operand 8887 states and 9353 transitions. [2022-12-13 17:27:49,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 701 [2022-12-13 17:27:49,854 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:27:49,855 INFO L195 NwaCegarLoop]: trace histogram [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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 17:27:49,855 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-12-13 17:27:49,855 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 17:27:49,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:27:49,856 INFO L85 PathProgramCache]: Analyzing trace with hash 14045898, now seen corresponding path program 1 times [2022-12-13 17:27:49,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:27:49,856 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [568946959] [2022-12-13 17:27:49,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:27:49,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:27:49,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:27:50,192 INFO L134 CoverageAnalysis]: Checked inductivity of 733 backedges. 360 proven. 0 refuted. 0 times theorem prover too weak. 373 trivial. 0 not checked. [2022-12-13 17:27:50,192 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:27:50,192 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [568946959] [2022-12-13 17:27:50,193 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [568946959] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:27:50,193 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:27:50,193 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 17:27:50,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [791511436] [2022-12-13 17:27:50,193 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:27:50,193 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 17:27:50,193 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:27:50,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 17:27:50,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 17:27:50,194 INFO L87 Difference]: Start difference. First operand 8887 states and 9353 transitions. Second operand has 3 states, 3 states have (on average 131.33333333333334) internal successors, (394), 3 states have internal predecessors, (394), 0 states have call successors, (0), 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 17:27:51,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:27:51,090 INFO L93 Difference]: Finished difference Result 20075 states and 21268 transitions. [2022-12-13 17:27:51,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 17:27:51,090 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 131.33333333333334) internal successors, (394), 3 states have internal predecessors, (394), 0 states have call successors, (0), 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 700 [2022-12-13 17:27:51,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 17:27:51,106 INFO L225 Difference]: With dead ends: 20075 [2022-12-13 17:27:51,106 INFO L226 Difference]: Without dead ends: 11519 [2022-12-13 17:27:51,112 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 17:27:51,113 INFO L413 NwaCegarLoop]: 436 mSDtfsCounter, 192 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 779 mSolverCounterSat, 98 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 192 SdHoareTripleChecker+Valid, 442 SdHoareTripleChecker+Invalid, 877 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 98 IncrementalHoareTripleChecker+Valid, 779 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-12-13 17:27:51,113 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [192 Valid, 442 Invalid, 877 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [98 Valid, 779 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-12-13 17:27:51,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11519 states. [2022-12-13 17:27:51,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11519 to 10532. [2022-12-13 17:27:51,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10532 states, 10531 states have (on average 1.0496629000094957) internal successors, (11054), 10531 states have internal predecessors, (11054), 0 states have call successors, (0), 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 17:27:51,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10532 states to 10532 states and 11054 transitions. [2022-12-13 17:27:51,210 INFO L78 Accepts]: Start accepts. Automaton has 10532 states and 11054 transitions. Word has length 700 [2022-12-13 17:27:51,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 17:27:51,211 INFO L495 AbstractCegarLoop]: Abstraction has 10532 states and 11054 transitions. [2022-12-13 17:27:51,211 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 131.33333333333334) internal successors, (394), 3 states have internal predecessors, (394), 0 states have call successors, (0), 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 17:27:51,211 INFO L276 IsEmpty]: Start isEmpty. Operand 10532 states and 11054 transitions. [2022-12-13 17:27:51,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 726 [2022-12-13 17:27:51,217 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:27:51,217 INFO L195 NwaCegarLoop]: trace histogram [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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 17:27:51,218 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-12-13 17:27:51,218 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 17:27:51,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:27:51,218 INFO L85 PathProgramCache]: Analyzing trace with hash 166482586, now seen corresponding path program 1 times [2022-12-13 17:27:51,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:27:51,218 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [765720987] [2022-12-13 17:27:51,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:27:51,218 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:27:51,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:27:52,014 INFO L134 CoverageAnalysis]: Checked inductivity of 808 backedges. 12 proven. 474 refuted. 0 times theorem prover too weak. 322 trivial. 0 not checked. [2022-12-13 17:27:52,014 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:27:52,014 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [765720987] [2022-12-13 17:27:52,014 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [765720987] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 17:27:52,014 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [470967847] [2022-12-13 17:27:52,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:27:52,015 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:27:52,015 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4240e5d-fd72-47e0-89ba-30a466f551e7/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:27:52,016 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4240e5d-fd72-47e0-89ba-30a466f551e7/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 17:27:52,017 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4240e5d-fd72-47e0-89ba-30a466f551e7/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-13 17:27:52,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:27:52,216 INFO L263 TraceCheckSpWp]: Trace formula consists of 879 conjuncts, 2 conjunts are in the unsatisfiable core [2022-12-13 17:27:52,225 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 17:27:52,276 INFO L134 CoverageAnalysis]: Checked inductivity of 808 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 793 trivial. 0 not checked. [2022-12-13 17:27:52,276 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 17:27:52,277 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [470967847] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:27:52,277 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 17:27:52,277 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2022-12-13 17:27:52,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [993366489] [2022-12-13 17:27:52,277 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:27:52,279 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 17:27:52,279 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:27:52,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 17:27:52,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-12-13 17:27:52,279 INFO L87 Difference]: Start difference. First operand 10532 states and 11054 transitions. Second operand has 3 states, 3 states have (on average 85.0) internal successors, (255), 3 states have internal predecessors, (255), 0 states have call successors, (0), 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 17:27:53,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:27:53,293 INFO L93 Difference]: Finished difference Result 20733 states and 21775 transitions. [2022-12-13 17:27:53,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 17:27:53,294 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 85.0) internal successors, (255), 3 states have internal predecessors, (255), 0 states have call successors, (0), 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 725 [2022-12-13 17:27:53,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 17:27:53,306 INFO L225 Difference]: With dead ends: 20733 [2022-12-13 17:27:53,306 INFO L226 Difference]: Without dead ends: 10532 [2022-12-13 17:27:53,311 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 729 GetRequests, 725 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-12-13 17:27:53,311 INFO L413 NwaCegarLoop]: 371 mSDtfsCounter, 361 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 786 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 361 SdHoareTripleChecker+Valid, 377 SdHoareTripleChecker+Invalid, 804 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 786 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-12-13 17:27:53,311 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [361 Valid, 377 Invalid, 804 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 786 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-12-13 17:27:53,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10532 states. [2022-12-13 17:27:53,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10532 to 10532. [2022-12-13 17:27:53,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10532 states, 10531 states have (on average 1.0441553508688635) internal successors, (10996), 10531 states have internal predecessors, (10996), 0 states have call successors, (0), 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 17:27:53,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10532 states to 10532 states and 10996 transitions. [2022-12-13 17:27:53,393 INFO L78 Accepts]: Start accepts. Automaton has 10532 states and 10996 transitions. Word has length 725 [2022-12-13 17:27:53,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 17:27:53,394 INFO L495 AbstractCegarLoop]: Abstraction has 10532 states and 10996 transitions. [2022-12-13 17:27:53,394 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 85.0) internal successors, (255), 3 states have internal predecessors, (255), 0 states have call successors, (0), 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 17:27:53,394 INFO L276 IsEmpty]: Start isEmpty. Operand 10532 states and 10996 transitions. [2022-12-13 17:27:53,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 835 [2022-12-13 17:27:53,402 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:27:53,402 INFO L195 NwaCegarLoop]: trace histogram [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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 17:27:53,408 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4240e5d-fd72-47e0-89ba-30a466f551e7/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-13 17:27:53,602 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4240e5d-fd72-47e0-89ba-30a466f551e7/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:27:53,603 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 17:27:53,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:27:53,603 INFO L85 PathProgramCache]: Analyzing trace with hash 1908497371, now seen corresponding path program 1 times [2022-12-13 17:27:53,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:27:53,603 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1856520192] [2022-12-13 17:27:53,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:27:53,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:27:53,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:27:54,001 INFO L134 CoverageAnalysis]: Checked inductivity of 947 backedges. 218 proven. 0 refuted. 0 times theorem prover too weak. 729 trivial. 0 not checked. [2022-12-13 17:27:54,001 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:27:54,001 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1856520192] [2022-12-13 17:27:54,001 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1856520192] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:27:54,001 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:27:54,001 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 17:27:54,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1979953489] [2022-12-13 17:27:54,002 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:27:54,002 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 17:27:54,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:27:54,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 17:27:54,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 17:27:54,003 INFO L87 Difference]: Start difference. First operand 10532 states and 10996 transitions. Second operand has 3 states, 3 states have (on average 116.33333333333333) internal successors, (349), 3 states have internal predecessors, (349), 0 states have call successors, (0), 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 17:27:54,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:27:54,679 INFO L93 Difference]: Finished difference Result 25668 states and 26885 transitions. [2022-12-13 17:27:54,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 17:27:54,679 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 116.33333333333333) internal successors, (349), 3 states have internal predecessors, (349), 0 states have call successors, (0), 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 834 [2022-12-13 17:27:54,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 17:27:54,702 INFO L225 Difference]: With dead ends: 25668 [2022-12-13 17:27:54,702 INFO L226 Difference]: Without dead ends: 14809 [2022-12-13 17:27:54,710 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 17:27:54,711 INFO L413 NwaCegarLoop]: 424 mSDtfsCounter, 270 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 747 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 270 SdHoareTripleChecker+Valid, 429 SdHoareTripleChecker+Invalid, 840 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 747 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-12-13 17:27:54,711 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [270 Valid, 429 Invalid, 840 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [93 Valid, 747 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-12-13 17:27:54,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14809 states. [2022-12-13 17:27:54,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14809 to 13822. [2022-12-13 17:27:54,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13822 states, 13821 states have (on average 1.0374068446566818) internal successors, (14338), 13821 states have internal predecessors, (14338), 0 states have call successors, (0), 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 17:27:54,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13822 states to 13822 states and 14338 transitions. [2022-12-13 17:27:54,861 INFO L78 Accepts]: Start accepts. Automaton has 13822 states and 14338 transitions. Word has length 834 [2022-12-13 17:27:54,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 17:27:54,861 INFO L495 AbstractCegarLoop]: Abstraction has 13822 states and 14338 transitions. [2022-12-13 17:27:54,862 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 116.33333333333333) internal successors, (349), 3 states have internal predecessors, (349), 0 states have call successors, (0), 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 17:27:54,862 INFO L276 IsEmpty]: Start isEmpty. Operand 13822 states and 14338 transitions. [2022-12-13 17:27:54,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1091 [2022-12-13 17:27:54,875 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:27:54,875 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 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, 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, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 17:27:54,875 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-12-13 17:27:54,875 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 17:27:54,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:27:54,875 INFO L85 PathProgramCache]: Analyzing trace with hash 132832260, now seen corresponding path program 1 times [2022-12-13 17:27:54,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:27:54,876 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [507424760] [2022-12-13 17:27:54,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:27:54,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:27:54,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:27:55,427 INFO L134 CoverageAnalysis]: Checked inductivity of 2239 backedges. 1614 proven. 0 refuted. 0 times theorem prover too weak. 625 trivial. 0 not checked. [2022-12-13 17:27:55,427 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:27:55,427 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [507424760] [2022-12-13 17:27:55,427 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [507424760] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:27:55,427 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:27:55,428 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 17:27:55,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1275752468] [2022-12-13 17:27:55,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:27:55,428 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 17:27:55,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:27:55,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 17:27:55,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 17:27:55,429 INFO L87 Difference]: Start difference. First operand 13822 states and 14338 transitions. Second operand has 3 states, 3 states have (on average 203.33333333333334) internal successors, (610), 3 states have internal predecessors, (610), 0 states have call successors, (0), 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 17:27:56,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:27:56,056 INFO L93 Difference]: Finished difference Result 27642 states and 28673 transitions. [2022-12-13 17:27:56,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 17:27:56,056 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 203.33333333333334) internal successors, (610), 3 states have internal predecessors, (610), 0 states have call successors, (0), 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 1090 [2022-12-13 17:27:56,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 17:27:56,068 INFO L225 Difference]: With dead ends: 27642 [2022-12-13 17:27:56,068 INFO L226 Difference]: Without dead ends: 13822 [2022-12-13 17:27:56,076 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 17:27:56,076 INFO L413 NwaCegarLoop]: 427 mSDtfsCounter, 220 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 756 mSolverCounterSat, 100 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 220 SdHoareTripleChecker+Valid, 433 SdHoareTripleChecker+Invalid, 856 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 100 IncrementalHoareTripleChecker+Valid, 756 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-12-13 17:27:56,077 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [220 Valid, 433 Invalid, 856 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [100 Valid, 756 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-12-13 17:27:56,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13822 states. [2022-12-13 17:27:56,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13822 to 12835. [2022-12-13 17:27:56,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12835 states, 12834 states have (on average 1.0229858189184977) internal successors, (13129), 12834 states have internal predecessors, (13129), 0 states have call successors, (0), 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 17:27:56,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12835 states to 12835 states and 13129 transitions. [2022-12-13 17:27:56,181 INFO L78 Accepts]: Start accepts. Automaton has 12835 states and 13129 transitions. Word has length 1090 [2022-12-13 17:27:56,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 17:27:56,182 INFO L495 AbstractCegarLoop]: Abstraction has 12835 states and 13129 transitions. [2022-12-13 17:27:56,182 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 203.33333333333334) internal successors, (610), 3 states have internal predecessors, (610), 0 states have call successors, (0), 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 17:27:56,182 INFO L276 IsEmpty]: Start isEmpty. Operand 12835 states and 13129 transitions. [2022-12-13 17:27:56,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1092 [2022-12-13 17:27:56,195 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:27:56,195 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 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, 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, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 17:27:56,195 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-12-13 17:27:56,195 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 17:27:56,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:27:56,196 INFO L85 PathProgramCache]: Analyzing trace with hash -965535051, now seen corresponding path program 1 times [2022-12-13 17:27:56,196 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:27:56,196 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [486591774] [2022-12-13 17:27:56,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:27:56,196 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:27:56,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:27:56,713 INFO L134 CoverageAnalysis]: Checked inductivity of 2245 backedges. 432 proven. 0 refuted. 0 times theorem prover too weak. 1813 trivial. 0 not checked. [2022-12-13 17:27:56,713 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:27:56,713 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [486591774] [2022-12-13 17:27:56,713 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [486591774] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:27:56,713 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:27:56,713 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 17:27:56,713 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1759223124] [2022-12-13 17:27:56,713 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:27:56,714 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 17:27:56,714 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:27:56,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 17:27:56,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 17:27:56,715 INFO L87 Difference]: Start difference. First operand 12835 states and 13129 transitions. Second operand has 3 states, 3 states have (on average 108.66666666666667) internal successors, (326), 3 states have internal predecessors, (326), 0 states have call successors, (0), 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 17:27:57,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:27:57,313 INFO L93 Difference]: Finished difference Result 27971 states and 28652 transitions. [2022-12-13 17:27:57,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 17:27:57,313 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 108.66666666666667) internal successors, (326), 3 states have internal predecessors, (326), 0 states have call successors, (0), 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 1091 [2022-12-13 17:27:57,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 17:27:57,326 INFO L225 Difference]: With dead ends: 27971 [2022-12-13 17:27:57,326 INFO L226 Difference]: Without dead ends: 13822 [2022-12-13 17:27:57,333 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 17:27:57,334 INFO L413 NwaCegarLoop]: 409 mSDtfsCounter, 273 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 761 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 273 SdHoareTripleChecker+Valid, 415 SdHoareTripleChecker+Invalid, 825 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 761 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-12-13 17:27:57,334 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [273 Valid, 415 Invalid, 825 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 761 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-12-13 17:27:57,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13822 states. [2022-12-13 17:27:57,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13822 to 11848. [2022-12-13 17:27:57,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11848 states, 11847 states have (on average 1.0210179792352494) internal successors, (12096), 11847 states have internal predecessors, (12096), 0 states have call successors, (0), 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 17:27:57,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11848 states to 11848 states and 12096 transitions. [2022-12-13 17:27:57,467 INFO L78 Accepts]: Start accepts. Automaton has 11848 states and 12096 transitions. Word has length 1091 [2022-12-13 17:27:57,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 17:27:57,468 INFO L495 AbstractCegarLoop]: Abstraction has 11848 states and 12096 transitions. [2022-12-13 17:27:57,468 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 108.66666666666667) internal successors, (326), 3 states have internal predecessors, (326), 0 states have call successors, (0), 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 17:27:57,468 INFO L276 IsEmpty]: Start isEmpty. Operand 11848 states and 12096 transitions. [2022-12-13 17:27:57,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1264 [2022-12-13 17:27:57,495 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:27:57,495 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-12-13 17:27:57,495 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-12-13 17:27:57,495 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 17:27:57,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:27:57,496 INFO L85 PathProgramCache]: Analyzing trace with hash -1215469920, now seen corresponding path program 1 times [2022-12-13 17:27:57,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:27:57,496 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1904931510] [2022-12-13 17:27:57,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:27:57,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:27:57,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:27:58,456 INFO L134 CoverageAnalysis]: Checked inductivity of 3318 backedges. 1930 proven. 0 refuted. 0 times theorem prover too weak. 1388 trivial. 0 not checked. [2022-12-13 17:27:58,456 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:27:58,456 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1904931510] [2022-12-13 17:27:58,456 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1904931510] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:27:58,456 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:27:58,457 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 17:27:58,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [698740523] [2022-12-13 17:27:58,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:27:58,458 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 17:27:58,458 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:27:58,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 17:27:58,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 17:27:58,458 INFO L87 Difference]: Start difference. First operand 11848 states and 12096 transitions. Second operand has 3 states, 3 states have (on average 190.33333333333334) internal successors, (571), 3 states have internal predecessors, (571), 0 states have call successors, (0), 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 17:27:59,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:27:59,036 INFO L93 Difference]: Finished difference Result 24023 states and 24528 transitions. [2022-12-13 17:27:59,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 17:27:59,036 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 190.33333333333334) internal successors, (571), 3 states have internal predecessors, (571), 0 states have call successors, (0), 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 1263 [2022-12-13 17:27:59,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 17:27:59,046 INFO L225 Difference]: With dead ends: 24023 [2022-12-13 17:27:59,046 INFO L226 Difference]: Without dead ends: 12506 [2022-12-13 17:27:59,050 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 17:27:59,051 INFO L413 NwaCegarLoop]: 428 mSDtfsCounter, 224 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 751 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 224 SdHoareTripleChecker+Valid, 434 SdHoareTripleChecker+Invalid, 756 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 751 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-12-13 17:27:59,051 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [224 Valid, 434 Invalid, 756 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 751 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-12-13 17:27:59,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12506 states. [2022-12-13 17:27:59,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12506 to 12506. [2022-12-13 17:27:59,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12506 states, 12505 states have (on average 1.0203118752499) internal successors, (12759), 12505 states have internal predecessors, (12759), 0 states have call successors, (0), 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 17:27:59,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12506 states to 12506 states and 12759 transitions. [2022-12-13 17:27:59,173 INFO L78 Accepts]: Start accepts. Automaton has 12506 states and 12759 transitions. Word has length 1263 [2022-12-13 17:27:59,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 17:27:59,174 INFO L495 AbstractCegarLoop]: Abstraction has 12506 states and 12759 transitions. [2022-12-13 17:27:59,174 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 190.33333333333334) internal successors, (571), 3 states have internal predecessors, (571), 0 states have call successors, (0), 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 17:27:59,174 INFO L276 IsEmpty]: Start isEmpty. Operand 12506 states and 12759 transitions. [2022-12-13 17:27:59,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1318 [2022-12-13 17:27:59,204 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:27:59,204 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 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, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 17:27:59,205 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-12-13 17:27:59,205 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 17:27:59,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:27:59,205 INFO L85 PathProgramCache]: Analyzing trace with hash 1261915355, now seen corresponding path program 1 times [2022-12-13 17:27:59,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:27:59,205 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1365982924] [2022-12-13 17:27:59,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:27:59,206 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:27:59,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:28:00,262 INFO L134 CoverageAnalysis]: Checked inductivity of 3322 backedges. 2153 proven. 66 refuted. 0 times theorem prover too weak. 1103 trivial. 0 not checked. [2022-12-13 17:28:00,263 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:28:00,263 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1365982924] [2022-12-13 17:28:00,263 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1365982924] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 17:28:00,263 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1128788751] [2022-12-13 17:28:00,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:28:00,263 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:28:00,263 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4240e5d-fd72-47e0-89ba-30a466f551e7/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:28:00,264 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4240e5d-fd72-47e0-89ba-30a466f551e7/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 17:28:00,265 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4240e5d-fd72-47e0-89ba-30a466f551e7/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-13 17:28:00,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:28:00,530 INFO L263 TraceCheckSpWp]: Trace formula consists of 1567 conjuncts, 7 conjunts are in the unsatisfiable core [2022-12-13 17:28:00,553 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 17:28:03,004 INFO L134 CoverageAnalysis]: Checked inductivity of 3322 backedges. 1643 proven. 201 refuted. 0 times theorem prover too weak. 1478 trivial. 0 not checked. [2022-12-13 17:28:03,004 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 17:28:06,080 INFO L134 CoverageAnalysis]: Checked inductivity of 3322 backedges. 1643 proven. 201 refuted. 0 times theorem prover too weak. 1478 trivial. 0 not checked. [2022-12-13 17:28:06,080 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1128788751] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 17:28:06,080 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 17:28:06,080 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3, 3] total 8 [2022-12-13 17:28:06,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [600129642] [2022-12-13 17:28:06,081 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 17:28:06,082 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-13 17:28:06,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:28:06,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-13 17:28:06,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2022-12-13 17:28:06,084 INFO L87 Difference]: Start difference. First operand 12506 states and 12759 transitions. Second operand has 9 states, 9 states have (on average 189.55555555555554) internal successors, (1706), 8 states have internal predecessors, (1706), 0 states have call successors, (0), 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 17:28:10,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:28:10,239 INFO L93 Difference]: Finished difference Result 37512 states and 38253 transitions. [2022-12-13 17:28:10,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-12-13 17:28:10,239 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 189.55555555555554) internal successors, (1706), 8 states have internal predecessors, (1706), 0 states have call successors, (0), 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 1317 [2022-12-13 17:28:10,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 17:28:10,255 INFO L225 Difference]: With dead ends: 37512 [2022-12-13 17:28:10,255 INFO L226 Difference]: Without dead ends: 24679 [2022-12-13 17:28:10,263 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2644 GetRequests, 2629 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=93, Invalid=179, Unknown=0, NotChecked=0, Total=272 [2022-12-13 17:28:10,263 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 1668 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 6170 mSolverCounterSat, 263 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1668 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 6433 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 263 IncrementalHoareTripleChecker+Valid, 6170 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2022-12-13 17:28:10,264 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1668 Valid, 82 Invalid, 6433 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [263 Valid, 6170 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2022-12-13 17:28:10,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24679 states. [2022-12-13 17:28:10,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24679 to 18099. [2022-12-13 17:28:10,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18099 states, 18098 states have (on average 1.019283898773345) internal successors, (18447), 18098 states have internal predecessors, (18447), 0 states have call successors, (0), 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 17:28:10,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18099 states to 18099 states and 18447 transitions. [2022-12-13 17:28:10,443 INFO L78 Accepts]: Start accepts. Automaton has 18099 states and 18447 transitions. Word has length 1317 [2022-12-13 17:28:10,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 17:28:10,443 INFO L495 AbstractCegarLoop]: Abstraction has 18099 states and 18447 transitions. [2022-12-13 17:28:10,443 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 189.55555555555554) internal successors, (1706), 8 states have internal predecessors, (1706), 0 states have call successors, (0), 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 17:28:10,443 INFO L276 IsEmpty]: Start isEmpty. Operand 18099 states and 18447 transitions. [2022-12-13 17:28:10,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1348 [2022-12-13 17:28:10,465 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:28:10,466 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 17:28:10,471 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4240e5d-fd72-47e0-89ba-30a466f551e7/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-13 17:28:10,666 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4240e5d-fd72-47e0-89ba-30a466f551e7/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-12-13 17:28:10,668 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 17:28:10,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:28:10,669 INFO L85 PathProgramCache]: Analyzing trace with hash -18592964, now seen corresponding path program 1 times [2022-12-13 17:28:10,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:28:10,670 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [155636048] [2022-12-13 17:28:10,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:28:10,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:28:10,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:28:12,345 INFO L134 CoverageAnalysis]: Checked inductivity of 3958 backedges. 1745 proven. 156 refuted. 0 times theorem prover too weak. 2057 trivial. 0 not checked. [2022-12-13 17:28:12,345 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:28:12,345 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [155636048] [2022-12-13 17:28:12,345 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [155636048] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 17:28:12,346 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1635818018] [2022-12-13 17:28:12,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:28:12,346 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:28:12,346 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4240e5d-fd72-47e0-89ba-30a466f551e7/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:28:12,347 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4240e5d-fd72-47e0-89ba-30a466f551e7/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 17:28:12,347 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4240e5d-fd72-47e0-89ba-30a466f551e7/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-13 17:28:12,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:28:12,601 INFO L263 TraceCheckSpWp]: Trace formula consists of 1621 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-13 17:28:12,610 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 17:28:12,936 INFO L134 CoverageAnalysis]: Checked inductivity of 3958 backedges. 1901 proven. 0 refuted. 0 times theorem prover too weak. 2057 trivial. 0 not checked. [2022-12-13 17:28:12,936 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 17:28:12,936 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1635818018] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:28:12,936 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 17:28:12,937 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2022-12-13 17:28:12,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [262606699] [2022-12-13 17:28:12,937 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:28:12,938 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 17:28:12,938 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:28:12,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 17:28:12,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-12-13 17:28:12,939 INFO L87 Difference]: Start difference. First operand 18099 states and 18447 transitions. Second operand has 3 states, 3 states have (on average 216.0) internal successors, (648), 3 states have internal predecessors, (648), 0 states have call successors, (0), 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 17:28:13,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:28:13,852 INFO L93 Difference]: Finished difference Result 37183 states and 37905 transitions. [2022-12-13 17:28:13,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 17:28:13,853 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 216.0) internal successors, (648), 3 states have internal predecessors, (648), 0 states have call successors, (0), 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 1347 [2022-12-13 17:28:13,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 17:28:13,865 INFO L225 Difference]: With dead ends: 37183 [2022-12-13 17:28:13,865 INFO L226 Difference]: Without dead ends: 19415 [2022-12-13 17:28:13,873 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1351 GetRequests, 1346 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-12-13 17:28:13,873 INFO L413 NwaCegarLoop]: 68 mSDtfsCounter, 176 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 761 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 176 SdHoareTripleChecker+Valid, 72 SdHoareTripleChecker+Invalid, 799 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 761 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-12-13 17:28:13,873 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [176 Valid, 72 Invalid, 799 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 761 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-12-13 17:28:13,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19415 states. [2022-12-13 17:28:14,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19415 to 17770. [2022-12-13 17:28:14,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17770 states, 17769 states have (on average 1.0181214474646856) internal successors, (18091), 17769 states have internal predecessors, (18091), 0 states have call successors, (0), 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 17:28:14,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17770 states to 17770 states and 18091 transitions. [2022-12-13 17:28:14,027 INFO L78 Accepts]: Start accepts. Automaton has 17770 states and 18091 transitions. Word has length 1347 [2022-12-13 17:28:14,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 17:28:14,027 INFO L495 AbstractCegarLoop]: Abstraction has 17770 states and 18091 transitions. [2022-12-13 17:28:14,027 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 216.0) internal successors, (648), 3 states have internal predecessors, (648), 0 states have call successors, (0), 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 17:28:14,027 INFO L276 IsEmpty]: Start isEmpty. Operand 17770 states and 18091 transitions. [2022-12-13 17:28:14,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1411 [2022-12-13 17:28:14,050 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:28:14,051 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-12-13 17:28:14,056 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4240e5d-fd72-47e0-89ba-30a466f551e7/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-12-13 17:28:14,251 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4240e5d-fd72-47e0-89ba-30a466f551e7/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-12-13 17:28:14,252 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 17:28:14,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:28:14,254 INFO L85 PathProgramCache]: Analyzing trace with hash -517358935, now seen corresponding path program 1 times [2022-12-13 17:28:14,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:28:14,254 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2126671102] [2022-12-13 17:28:14,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:28:14,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:28:14,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:28:15,909 INFO L134 CoverageAnalysis]: Checked inductivity of 4137 backedges. 2922 proven. 41 refuted. 0 times theorem prover too weak. 1174 trivial. 0 not checked. [2022-12-13 17:28:15,910 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:28:15,910 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2126671102] [2022-12-13 17:28:15,910 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2126671102] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 17:28:15,910 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2058771958] [2022-12-13 17:28:15,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:28:15,910 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:28:15,910 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4240e5d-fd72-47e0-89ba-30a466f551e7/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:28:15,911 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4240e5d-fd72-47e0-89ba-30a466f551e7/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 17:28:15,912 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4240e5d-fd72-47e0-89ba-30a466f551e7/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-13 17:28:16,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:28:16,244 INFO L263 TraceCheckSpWp]: Trace formula consists of 1686 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-13 17:28:16,251 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 17:28:16,679 INFO L134 CoverageAnalysis]: Checked inductivity of 4137 backedges. 1717 proven. 0 refuted. 0 times theorem prover too weak. 2420 trivial. 0 not checked. [2022-12-13 17:28:16,679 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 17:28:16,679 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2058771958] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:28:16,680 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 17:28:16,680 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2022-12-13 17:28:16,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1789634407] [2022-12-13 17:28:16,680 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:28:16,680 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 17:28:16,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:28:16,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 17:28:16,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-12-13 17:28:16,681 INFO L87 Difference]: Start difference. First operand 17770 states and 18091 transitions. Second operand has 3 states, 3 states have (on average 183.33333333333334) internal successors, (550), 3 states have internal predecessors, (550), 0 states have call successors, (0), 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 17:28:17,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:28:17,407 INFO L93 Difference]: Finished difference Result 35209 states and 35849 transitions. [2022-12-13 17:28:17,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 17:28:17,407 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 183.33333333333334) internal successors, (550), 3 states have internal predecessors, (550), 0 states have call successors, (0), 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 1410 [2022-12-13 17:28:17,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 17:28:17,419 INFO L225 Difference]: With dead ends: 35209 [2022-12-13 17:28:17,419 INFO L226 Difference]: Without dead ends: 17770 [2022-12-13 17:28:17,425 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1414 GetRequests, 1410 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-12-13 17:28:17,426 INFO L413 NwaCegarLoop]: 419 mSDtfsCounter, 120 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 743 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 425 SdHoareTripleChecker+Invalid, 754 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 743 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-12-13 17:28:17,426 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [120 Valid, 425 Invalid, 754 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 743 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-12-13 17:28:17,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17770 states. [2022-12-13 17:28:17,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17770 to 17770. [2022-12-13 17:28:17,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17770 states, 17769 states have (on average 1.017896336316056) internal successors, (18087), 17769 states have internal predecessors, (18087), 0 states have call successors, (0), 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 17:28:17,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17770 states to 17770 states and 18087 transitions. [2022-12-13 17:28:17,572 INFO L78 Accepts]: Start accepts. Automaton has 17770 states and 18087 transitions. Word has length 1410 [2022-12-13 17:28:17,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 17:28:17,573 INFO L495 AbstractCegarLoop]: Abstraction has 17770 states and 18087 transitions. [2022-12-13 17:28:17,573 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 183.33333333333334) internal successors, (550), 3 states have internal predecessors, (550), 0 states have call successors, (0), 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 17:28:17,574 INFO L276 IsEmpty]: Start isEmpty. Operand 17770 states and 18087 transitions. [2022-12-13 17:28:17,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1570 [2022-12-13 17:28:17,598 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:28:17,599 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:28:17,604 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4240e5d-fd72-47e0-89ba-30a466f551e7/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-12-13 17:28:17,800 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4240e5d-fd72-47e0-89ba-30a466f551e7/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-12-13 17:28:17,801 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 17:28:17,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:28:17,802 INFO L85 PathProgramCache]: Analyzing trace with hash -924105748, now seen corresponding path program 1 times [2022-12-13 17:28:17,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:28:17,803 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [695818010] [2022-12-13 17:28:17,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:28:17,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:28:17,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:28:18,627 INFO L134 CoverageAnalysis]: Checked inductivity of 4662 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 4627 trivial. 0 not checked. [2022-12-13 17:28:18,627 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:28:18,627 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [695818010] [2022-12-13 17:28:18,627 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [695818010] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:28:18,627 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:28:18,627 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 17:28:18,627 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1115194217] [2022-12-13 17:28:18,627 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:28:18,629 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 17:28:18,629 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:28:18,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 17:28:18,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 17:28:18,630 INFO L87 Difference]: Start difference. First operand 17770 states and 18087 transitions. Second operand has 3 states, 3 states have (on average 94.66666666666667) internal successors, (284), 3 states have internal predecessors, (284), 0 states have call successors, (0), 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 17:28:19,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:28:19,518 INFO L93 Difference]: Finished difference Result 35538 states and 36174 transitions. [2022-12-13 17:28:19,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 17:28:19,518 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 94.66666666666667) internal successors, (284), 3 states have internal predecessors, (284), 0 states have call successors, (0), 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 1569 [2022-12-13 17:28:19,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 17:28:19,529 INFO L225 Difference]: With dead ends: 35538 [2022-12-13 17:28:19,529 INFO L226 Difference]: Without dead ends: 16454 [2022-12-13 17:28:19,535 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 17:28:19,535 INFO L413 NwaCegarLoop]: 411 mSDtfsCounter, 331 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 749 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 331 SdHoareTripleChecker+Valid, 417 SdHoareTripleChecker+Invalid, 788 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 749 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-12-13 17:28:19,535 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [331 Valid, 417 Invalid, 788 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 749 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-12-13 17:28:19,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16454 states. [2022-12-13 17:28:19,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16454 to 16454. [2022-12-13 17:28:19,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16454 states, 16453 states have (on average 1.0150732389229928) internal successors, (16701), 16453 states have internal predecessors, (16701), 0 states have call successors, (0), 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 17:28:19,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16454 states to 16454 states and 16701 transitions. [2022-12-13 17:28:19,679 INFO L78 Accepts]: Start accepts. Automaton has 16454 states and 16701 transitions. Word has length 1569 [2022-12-13 17:28:19,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 17:28:19,680 INFO L495 AbstractCegarLoop]: Abstraction has 16454 states and 16701 transitions. [2022-12-13 17:28:19,680 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 94.66666666666667) internal successors, (284), 3 states have internal predecessors, (284), 0 states have call successors, (0), 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 17:28:19,680 INFO L276 IsEmpty]: Start isEmpty. Operand 16454 states and 16701 transitions. [2022-12-13 17:28:19,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1788 [2022-12-13 17:28:19,708 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:28:19,709 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 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, 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] [2022-12-13 17:28:19,709 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-12-13 17:28:19,709 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 17:28:19,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:28:19,709 INFO L85 PathProgramCache]: Analyzing trace with hash 1986265188, now seen corresponding path program 1 times [2022-12-13 17:28:19,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:28:19,710 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [180459629] [2022-12-13 17:28:19,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:28:19,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:28:19,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:28:21,571 INFO L134 CoverageAnalysis]: Checked inductivity of 5382 backedges. 3724 proven. 0 refuted. 0 times theorem prover too weak. 1658 trivial. 0 not checked. [2022-12-13 17:28:21,572 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:28:21,572 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [180459629] [2022-12-13 17:28:21,572 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [180459629] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:28:21,572 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:28:21,572 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 17:28:21,572 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [906087324] [2022-12-13 17:28:21,572 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:28:21,573 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 17:28:21,573 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:28:21,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 17:28:21,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-13 17:28:21,573 INFO L87 Difference]: Start difference. First operand 16454 states and 16701 transitions. Second operand has 5 states, 5 states have (on average 165.8) internal successors, (829), 5 states have internal predecessors, (829), 0 states have call successors, (0), 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 17:28:22,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:28:22,904 INFO L93 Difference]: Finished difference Result 33244 states and 33743 transitions. [2022-12-13 17:28:22,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 17:28:22,904 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 165.8) internal successors, (829), 5 states have internal predecessors, (829), 0 states have call successors, (0), 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 1787 [2022-12-13 17:28:22,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 17:28:22,915 INFO L225 Difference]: With dead ends: 33244 [2022-12-13 17:28:22,915 INFO L226 Difference]: Without dead ends: 17121 [2022-12-13 17:28:22,920 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-12-13 17:28:22,921 INFO L413 NwaCegarLoop]: 408 mSDtfsCounter, 600 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 2430 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 600 SdHoareTripleChecker+Valid, 432 SdHoareTripleChecker+Invalid, 2467 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 2430 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-12-13 17:28:22,921 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [600 Valid, 432 Invalid, 2467 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 2430 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-12-13 17:28:22,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17121 states. [2022-12-13 17:28:23,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17121 to 16783. [2022-12-13 17:28:23,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16783 states, 16782 states have (on average 1.0145393874389226) internal successors, (17026), 16782 states have internal predecessors, (17026), 0 states have call successors, (0), 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 17:28:23,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16783 states to 16783 states and 17026 transitions. [2022-12-13 17:28:23,065 INFO L78 Accepts]: Start accepts. Automaton has 16783 states and 17026 transitions. Word has length 1787 [2022-12-13 17:28:23,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 17:28:23,066 INFO L495 AbstractCegarLoop]: Abstraction has 16783 states and 17026 transitions. [2022-12-13 17:28:23,066 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 165.8) internal successors, (829), 5 states have internal predecessors, (829), 0 states have call successors, (0), 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 17:28:23,066 INFO L276 IsEmpty]: Start isEmpty. Operand 16783 states and 17026 transitions. [2022-12-13 17:28:23,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1962 [2022-12-13 17:28:23,100 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:28:23,101 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 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, 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, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:28:23,101 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-12-13 17:28:23,101 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 17:28:23,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:28:23,102 INFO L85 PathProgramCache]: Analyzing trace with hash -1609568002, now seen corresponding path program 1 times [2022-12-13 17:28:23,102 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:28:23,102 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [585501196] [2022-12-13 17:28:23,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:28:23,102 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:28:23,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:28:27,779 INFO L134 CoverageAnalysis]: Checked inductivity of 6562 backedges. 3131 proven. 1578 refuted. 0 times theorem prover too weak. 1853 trivial. 0 not checked. [2022-12-13 17:28:27,779 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:28:27,779 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [585501196] [2022-12-13 17:28:27,779 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [585501196] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 17:28:27,779 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1119055459] [2022-12-13 17:28:27,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:28:27,780 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:28:27,780 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4240e5d-fd72-47e0-89ba-30a466f551e7/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:28:27,781 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4240e5d-fd72-47e0-89ba-30a466f551e7/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 17:28:27,781 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4240e5d-fd72-47e0-89ba-30a466f551e7/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-13 17:28:28,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:28:28,146 INFO L263 TraceCheckSpWp]: Trace formula consists of 2268 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-13 17:28:28,156 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 17:28:28,247 INFO L134 CoverageAnalysis]: Checked inductivity of 6562 backedges. 3934 proven. 0 refuted. 0 times theorem prover too weak. 2628 trivial. 0 not checked. [2022-12-13 17:28:28,247 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 17:28:28,247 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1119055459] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:28:28,247 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 17:28:28,248 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 11 [2022-12-13 17:28:28,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1297722037] [2022-12-13 17:28:28,248 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:28:28,249 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 17:28:28,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:28:28,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 17:28:28,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2022-12-13 17:28:28,249 INFO L87 Difference]: Start difference. First operand 16783 states and 17026 transitions. Second operand has 3 states, 3 states have (on average 224.0) internal successors, (672), 3 states have internal predecessors, (672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:28:28,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:28:28,932 INFO L93 Difference]: Finished difference Result 34880 states and 35390 transitions. [2022-12-13 17:28:28,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 17:28:28,932 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 224.0) internal successors, (672), 3 states have internal predecessors, (672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 1961 [2022-12-13 17:28:28,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 17:28:28,946 INFO L225 Difference]: With dead ends: 34880 [2022-12-13 17:28:28,946 INFO L226 Difference]: Without dead ends: 18428 [2022-12-13 17:28:28,953 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1971 GetRequests, 1962 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2022-12-13 17:28:28,954 INFO L413 NwaCegarLoop]: 413 mSDtfsCounter, 221 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 779 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 221 SdHoareTripleChecker+Valid, 419 SdHoareTripleChecker+Invalid, 806 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 779 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-12-13 17:28:28,954 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [221 Valid, 419 Invalid, 806 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 779 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-12-13 17:28:28,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18428 states. [2022-12-13 17:28:29,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18428 to 17770. [2022-12-13 17:28:29,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17770 states, 17769 states have (on average 1.0140694467893523) internal successors, (18019), 17769 states have internal predecessors, (18019), 0 states have call successors, (0), 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 17:28:29,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17770 states to 17770 states and 18019 transitions. [2022-12-13 17:28:29,106 INFO L78 Accepts]: Start accepts. Automaton has 17770 states and 18019 transitions. Word has length 1961 [2022-12-13 17:28:29,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 17:28:29,107 INFO L495 AbstractCegarLoop]: Abstraction has 17770 states and 18019 transitions. [2022-12-13 17:28:29,107 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 224.0) internal successors, (672), 3 states have internal predecessors, (672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:28:29,107 INFO L276 IsEmpty]: Start isEmpty. Operand 17770 states and 18019 transitions. [2022-12-13 17:28:29,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1993 [2022-12-13 17:28:29,161 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:28:29,162 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 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, 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, 2, 2, 2, 2, 2, 2, 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] [2022-12-13 17:28:29,167 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4240e5d-fd72-47e0-89ba-30a466f551e7/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-12-13 17:28:29,362 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4240e5d-fd72-47e0-89ba-30a466f551e7/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2022-12-13 17:28:29,364 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 17:28:29,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:28:29,366 INFO L85 PathProgramCache]: Analyzing trace with hash -359106107, now seen corresponding path program 1 times [2022-12-13 17:28:29,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:28:29,367 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [548990189] [2022-12-13 17:28:29,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:28:29,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:28:29,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:28:34,156 INFO L134 CoverageAnalysis]: Checked inductivity of 6892 backedges. 3256 proven. 1609 refuted. 0 times theorem prover too weak. 2027 trivial. 0 not checked. [2022-12-13 17:28:34,157 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:28:34,157 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [548990189] [2022-12-13 17:28:34,157 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [548990189] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 17:28:34,157 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [746697495] [2022-12-13 17:28:34,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:28:34,157 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:28:34,157 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4240e5d-fd72-47e0-89ba-30a466f551e7/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:28:34,158 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4240e5d-fd72-47e0-89ba-30a466f551e7/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 17:28:34,159 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4240e5d-fd72-47e0-89ba-30a466f551e7/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-12-13 17:28:34,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:28:34,550 INFO L263 TraceCheckSpWp]: Trace formula consists of 2302 conjuncts, 5 conjunts are in the unsatisfiable core [2022-12-13 17:28:34,559 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 17:28:35,340 INFO L134 CoverageAnalysis]: Checked inductivity of 6892 backedges. 3985 proven. 250 refuted. 0 times theorem prover too weak. 2657 trivial. 0 not checked. [2022-12-13 17:28:35,340 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 17:28:36,797 INFO L134 CoverageAnalysis]: Checked inductivity of 6892 backedges. 3095 proven. 0 refuted. 0 times theorem prover too weak. 3797 trivial. 0 not checked. [2022-12-13 17:28:36,797 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [746697495] provided 1 perfect and 1 imperfect interpolant sequences [2022-12-13 17:28:36,797 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-12-13 17:28:36,798 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9, 4] total 13 [2022-12-13 17:28:36,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [540757630] [2022-12-13 17:28:36,798 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:28:36,798 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 17:28:36,798 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:28:36,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 17:28:36,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2022-12-13 17:28:36,799 INFO L87 Difference]: Start difference. First operand 17770 states and 18019 transitions. Second operand has 3 states, 3 states have (on average 285.3333333333333) internal successors, (856), 3 states have internal predecessors, (856), 0 states have call successors, (0), 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 17:28:37,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:28:37,703 INFO L93 Difference]: Finished difference Result 36196 states and 36710 transitions. [2022-12-13 17:28:37,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 17:28:37,703 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 285.3333333333333) internal successors, (856), 3 states have internal predecessors, (856), 0 states have call successors, (0), 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 1992 [2022-12-13 17:28:37,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 17:28:37,714 INFO L225 Difference]: With dead ends: 36196 [2022-12-13 17:28:37,714 INFO L226 Difference]: Without dead ends: 18757 [2022-12-13 17:28:37,719 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3993 GetRequests, 3982 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2022-12-13 17:28:37,719 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 86 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 737 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 821 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 737 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-12-13 17:28:37,719 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [86 Valid, 18 Invalid, 821 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 737 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-12-13 17:28:37,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18757 states. [2022-12-13 17:28:37,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18757 to 18428. [2022-12-13 17:28:37,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18428 states, 18427 states have (on average 1.013729852933196) internal successors, (18680), 18427 states have internal predecessors, (18680), 0 states have call successors, (0), 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 17:28:37,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18428 states to 18428 states and 18680 transitions. [2022-12-13 17:28:37,871 INFO L78 Accepts]: Start accepts. Automaton has 18428 states and 18680 transitions. Word has length 1992 [2022-12-13 17:28:37,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 17:28:37,872 INFO L495 AbstractCegarLoop]: Abstraction has 18428 states and 18680 transitions. [2022-12-13 17:28:37,872 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 285.3333333333333) internal successors, (856), 3 states have internal predecessors, (856), 0 states have call successors, (0), 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 17:28:37,872 INFO L276 IsEmpty]: Start isEmpty. Operand 18428 states and 18680 transitions. [2022-12-13 17:28:37,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2060 [2022-12-13 17:28:37,907 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:28:37,907 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 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] [2022-12-13 17:28:37,913 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4240e5d-fd72-47e0-89ba-30a466f551e7/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-12-13 17:28:38,108 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4240e5d-fd72-47e0-89ba-30a466f551e7/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2022-12-13 17:28:38,109 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 17:28:38,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:28:38,111 INFO L85 PathProgramCache]: Analyzing trace with hash -1288961244, now seen corresponding path program 1 times [2022-12-13 17:28:38,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:28:38,112 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2056991106] [2022-12-13 17:28:38,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:28:38,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:28:38,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:28:42,892 INFO L134 CoverageAnalysis]: Checked inductivity of 7565 backedges. 3523 proven. 1609 refuted. 0 times theorem prover too weak. 2433 trivial. 0 not checked. [2022-12-13 17:28:42,892 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:28:42,892 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2056991106] [2022-12-13 17:28:42,892 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2056991106] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 17:28:42,892 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1221582548] [2022-12-13 17:28:42,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:28:42,892 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:28:42,892 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4240e5d-fd72-47e0-89ba-30a466f551e7/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:28:42,893 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4240e5d-fd72-47e0-89ba-30a466f551e7/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 17:28:42,894 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4240e5d-fd72-47e0-89ba-30a466f551e7/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-12-13 17:28:43,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:28:43,297 INFO L263 TraceCheckSpWp]: Trace formula consists of 2391 conjuncts, 2 conjunts are in the unsatisfiable core [2022-12-13 17:28:43,306 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 17:28:43,366 INFO L134 CoverageAnalysis]: Checked inductivity of 7565 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 7522 trivial. 0 not checked. [2022-12-13 17:28:43,366 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 17:28:43,366 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1221582548] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:28:43,367 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 17:28:43,367 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 11 [2022-12-13 17:28:43,367 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1993915676] [2022-12-13 17:28:43,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:28:43,368 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 17:28:43,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:28:43,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 17:28:43,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2022-12-13 17:28:43,369 INFO L87 Difference]: Start difference. First operand 18428 states and 18680 transitions. Second operand has 3 states, 3 states have (on average 110.66666666666667) internal successors, (332), 3 states have internal predecessors, (332), 0 states have call successors, (0), 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 17:28:44,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:28:44,127 INFO L93 Difference]: Finished difference Result 19746 states and 20013 transitions. [2022-12-13 17:28:44,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 17:28:44,127 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 110.66666666666667) internal successors, (332), 3 states have internal predecessors, (332), 0 states have call successors, (0), 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 2059 [2022-12-13 17:28:44,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 17:28:44,139 INFO L225 Difference]: With dead ends: 19746 [2022-12-13 17:28:44,139 INFO L226 Difference]: Without dead ends: 19415 [2022-12-13 17:28:44,142 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2069 GetRequests, 2060 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2022-12-13 17:28:44,143 INFO L413 NwaCegarLoop]: 45 mSDtfsCounter, 329 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 764 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 329 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 827 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 764 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-12-13 17:28:44,143 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [329 Valid, 50 Invalid, 827 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 764 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-12-13 17:28:44,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19415 states. [2022-12-13 17:28:44,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19415 to 18428. [2022-12-13 17:28:44,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18428 states, 18427 states have (on average 1.013675584739784) internal successors, (18679), 18427 states have internal predecessors, (18679), 0 states have call successors, (0), 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 17:28:44,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18428 states to 18428 states and 18679 transitions. [2022-12-13 17:28:44,304 INFO L78 Accepts]: Start accepts. Automaton has 18428 states and 18679 transitions. Word has length 2059 [2022-12-13 17:28:44,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 17:28:44,305 INFO L495 AbstractCegarLoop]: Abstraction has 18428 states and 18679 transitions. [2022-12-13 17:28:44,305 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 110.66666666666667) internal successors, (332), 3 states have internal predecessors, (332), 0 states have call successors, (0), 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 17:28:44,305 INFO L276 IsEmpty]: Start isEmpty. Operand 18428 states and 18679 transitions. [2022-12-13 17:28:44,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2200 [2022-12-13 17:28:44,343 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:28:44,344 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:28:44,349 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4240e5d-fd72-47e0-89ba-30a466f551e7/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-12-13 17:28:44,544 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4240e5d-fd72-47e0-89ba-30a466f551e7/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:28:44,546 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 17:28:44,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:28:44,548 INFO L85 PathProgramCache]: Analyzing trace with hash -1396597460, now seen corresponding path program 1 times [2022-12-13 17:28:44,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:28:44,549 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1963838994] [2022-12-13 17:28:44,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:28:44,550 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:28:44,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:28:49,674 INFO L134 CoverageAnalysis]: Checked inductivity of 9909 backedges. 4358 proven. 1609 refuted. 0 times theorem prover too weak. 3942 trivial. 0 not checked. [2022-12-13 17:28:49,674 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:28:49,674 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1963838994] [2022-12-13 17:28:49,674 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1963838994] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 17:28:49,674 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1965905191] [2022-12-13 17:28:49,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:28:49,674 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:28:49,674 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4240e5d-fd72-47e0-89ba-30a466f551e7/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:28:49,675 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4240e5d-fd72-47e0-89ba-30a466f551e7/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 17:28:49,676 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4240e5d-fd72-47e0-89ba-30a466f551e7/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-12-13 17:28:50,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:28:50,224 INFO L263 TraceCheckSpWp]: Trace formula consists of 2568 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-13 17:28:50,234 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 17:28:55,860 INFO L134 CoverageAnalysis]: Checked inductivity of 9909 backedges. 2778 proven. 0 refuted. 0 times theorem prover too weak. 7131 trivial. 0 not checked. [2022-12-13 17:28:55,860 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 17:28:55,860 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1965905191] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:28:55,860 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 17:28:55,861 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 11 [2022-12-13 17:28:55,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [807177699] [2022-12-13 17:28:55,861 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:28:55,862 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 17:28:55,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:28:55,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 17:28:55,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2022-12-13 17:28:55,863 INFO L87 Difference]: Start difference. First operand 18428 states and 18679 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 17:28:56,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:28:56,926 INFO L93 Difference]: Finished difference Result 36525 states and 37025 transitions. [2022-12-13 17:28:56,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 17:28:56,927 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 2199 [2022-12-13 17:28:56,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 17:28:56,942 INFO L225 Difference]: With dead ends: 36525 [2022-12-13 17:28:56,943 INFO L226 Difference]: Without dead ends: 18428 [2022-12-13 17:28:56,951 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2209 GetRequests, 2200 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2022-12-13 17:28:56,951 INFO L413 NwaCegarLoop]: 413 mSDtfsCounter, 119 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 737 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 119 SdHoareTripleChecker+Valid, 419 SdHoareTripleChecker+Invalid, 747 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 737 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-12-13 17:28:56,952 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [119 Valid, 419 Invalid, 747 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 737 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-12-13 17:28:56,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18428 states. [2022-12-13 17:28:57,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18428 to 18428. [2022-12-13 17:28:57,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18428 states, 18427 states have (on average 1.0134042437727249) internal successors, (18674), 18427 states have internal predecessors, (18674), 0 states have call successors, (0), 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 17:28:57,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18428 states to 18428 states and 18674 transitions. [2022-12-13 17:28:57,120 INFO L78 Accepts]: Start accepts. Automaton has 18428 states and 18674 transitions. Word has length 2199 [2022-12-13 17:28:57,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 17:28:57,121 INFO L495 AbstractCegarLoop]: Abstraction has 18428 states and 18674 transitions. [2022-12-13 17:28:57,121 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 17:28:57,122 INFO L276 IsEmpty]: Start isEmpty. Operand 18428 states and 18674 transitions. [2022-12-13 17:28:57,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2354 [2022-12-13 17:28:57,163 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:28:57,164 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:28:57,170 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4240e5d-fd72-47e0-89ba-30a466f551e7/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2022-12-13 17:28:57,364 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4240e5d-fd72-47e0-89ba-30a466f551e7/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:28:57,366 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 17:28:57,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:28:57,367 INFO L85 PathProgramCache]: Analyzing trace with hash -1460600081, now seen corresponding path program 1 times [2022-12-13 17:28:57,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:28:57,368 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [46536607] [2022-12-13 17:28:57,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:28:57,369 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:28:57,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:29:02,958 INFO L134 CoverageAnalysis]: Checked inductivity of 11604 backedges. 4944 proven. 1609 refuted. 0 times theorem prover too weak. 5051 trivial. 0 not checked. [2022-12-13 17:29:02,959 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:29:02,959 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [46536607] [2022-12-13 17:29:02,959 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [46536607] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 17:29:02,959 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1053617355] [2022-12-13 17:29:02,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:29:02,959 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:29:02,959 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4240e5d-fd72-47e0-89ba-30a466f551e7/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:29:02,960 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4240e5d-fd72-47e0-89ba-30a466f551e7/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 17:29:02,961 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4240e5d-fd72-47e0-89ba-30a466f551e7/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-12-13 17:29:03,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:29:03,391 INFO L263 TraceCheckSpWp]: Trace formula consists of 2746 conjuncts, 2 conjunts are in the unsatisfiable core [2022-12-13 17:29:03,402 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 17:29:15,962 WARN L233 SmtUtils]: Spent 12.16s on a formula simplification. DAG size of input: 56 DAG size of output: 24 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-13 17:29:20,022 INFO L134 CoverageAnalysis]: Checked inductivity of 11604 backedges. 4386 proven. 0 refuted. 0 times theorem prover too weak. 7218 trivial. 0 not checked. [2022-12-13 17:29:20,022 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 17:29:20,022 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1053617355] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:29:20,022 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 17:29:20,023 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 11 [2022-12-13 17:29:20,023 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [478656500] [2022-12-13 17:29:20,023 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:29:20,023 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 17:29:20,024 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:29:20,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 17:29:20,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2022-12-13 17:29:20,024 INFO L87 Difference]: Start difference. First operand 18428 states and 18674 transitions. Second operand has 3 states, 3 states have (on average 220.0) internal successors, (660), 3 states have internal predecessors, (660), 0 states have call successors, (0), 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 17:29:23,064 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.78s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-12-13 17:29:25,077 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-12-13 17:29:29,548 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-12-13 17:29:34,022 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-12-13 17:29:38,063 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-12-13 17:29:40,679 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-12-13 17:29:43,030 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-12-13 17:29:46,183 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.68s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-12-13 17:29:48,519 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-12-13 17:29:50,540 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-12-13 17:29:52,649 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-12-13 17:29:55,084 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-12-13 17:29:57,149 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-12-13 17:29:59,169 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-12-13 17:30:01,185 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-12-13 17:30:04,210 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-12-13 17:30:06,262 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-12-13 17:30:07,536 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.26s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-12-13 17:30:10,460 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-12-13 17:30:11,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:30:11,394 INFO L93 Difference]: Finished difference Result 38499 states and 39021 transitions. [2022-12-13 17:30:11,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 17:30:11,395 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 220.0) internal successors, (660), 3 states have internal predecessors, (660), 0 states have call successors, (0), 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 2353 [2022-12-13 17:30:11,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 17:30:11,407 INFO L225 Difference]: With dead ends: 38499 [2022-12-13 17:30:11,407 INFO L226 Difference]: Without dead ends: 20402 [2022-12-13 17:30:11,414 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2363 GetRequests, 2354 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 12.3s TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2022-12-13 17:30:11,414 INFO L413 NwaCegarLoop]: 47 mSDtfsCounter, 180 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 752 mSolverCounterSat, 59 mSolverCounterUnsat, 16 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 50.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 180 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 827 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 752 IncrementalHoareTripleChecker+Invalid, 16 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 51.2s IncrementalHoareTripleChecker+Time [2022-12-13 17:30:11,414 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [180 Valid, 52 Invalid, 827 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 752 Invalid, 16 Unknown, 0 Unchecked, 51.2s Time] [2022-12-13 17:30:11,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20402 states. [2022-12-13 17:30:11,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20402 to 18757. [2022-12-13 17:30:11,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18757 states, 18756 states have (on average 1.013275751759437) internal successors, (19005), 18756 states have internal predecessors, (19005), 0 states have call successors, (0), 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 17:30:11,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18757 states to 18757 states and 19005 transitions. [2022-12-13 17:30:11,588 INFO L78 Accepts]: Start accepts. Automaton has 18757 states and 19005 transitions. Word has length 2353 [2022-12-13 17:30:11,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 17:30:11,589 INFO L495 AbstractCegarLoop]: Abstraction has 18757 states and 19005 transitions. [2022-12-13 17:30:11,589 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 220.0) internal successors, (660), 3 states have internal predecessors, (660), 0 states have call successors, (0), 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 17:30:11,589 INFO L276 IsEmpty]: Start isEmpty. Operand 18757 states and 19005 transitions. [2022-12-13 17:30:11,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2420 [2022-12-13 17:30:11,633 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:30:11,633 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 17:30:11,639 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4240e5d-fd72-47e0-89ba-30a466f551e7/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-12-13 17:30:11,834 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4240e5d-fd72-47e0-89ba-30a466f551e7/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:30:11,835 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 17:30:11,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:30:11,837 INFO L85 PathProgramCache]: Analyzing trace with hash 1453469066, now seen corresponding path program 1 times [2022-12-13 17:30:11,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:30:11,838 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1265351819] [2022-12-13 17:30:11,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:30:11,838 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:30:12,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:30:17,618 INFO L134 CoverageAnalysis]: Checked inductivity of 11965 backedges. 5136 proven. 1609 refuted. 0 times theorem prover too weak. 5220 trivial. 0 not checked. [2022-12-13 17:30:17,619 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:30:17,619 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1265351819] [2022-12-13 17:30:17,619 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1265351819] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 17:30:17,619 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [757529973] [2022-12-13 17:30:17,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:30:17,619 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:30:17,619 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4240e5d-fd72-47e0-89ba-30a466f551e7/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:30:17,620 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4240e5d-fd72-47e0-89ba-30a466f551e7/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 17:30:17,621 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4240e5d-fd72-47e0-89ba-30a466f551e7/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-12-13 17:30:18,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:30:18,083 INFO L263 TraceCheckSpWp]: Trace formula consists of 2812 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-13 17:30:18,093 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 17:30:20,532 INFO L134 CoverageAnalysis]: Checked inductivity of 11965 backedges. 7510 proven. 0 refuted. 0 times theorem prover too weak. 4455 trivial. 0 not checked. [2022-12-13 17:30:20,532 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 17:30:20,532 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [757529973] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:30:20,532 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 17:30:20,533 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 11 [2022-12-13 17:30:20,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1896162378] [2022-12-13 17:30:20,533 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:30:20,533 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 17:30:20,533 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:30:20,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 17:30:20,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2022-12-13 17:30:20,534 INFO L87 Difference]: Start difference. First operand 18757 states and 19005 transitions. Second operand has 3 states, 3 states have (on average 260.0) internal successors, (780), 3 states have internal predecessors, (780), 0 states have call successors, (0), 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 17:30:23,231 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 [0] [2022-12-13 17:30:23,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:30:23,654 INFO L93 Difference]: Finished difference Result 38170 states and 38682 transitions. [2022-12-13 17:30:23,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 17:30:23,656 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 260.0) internal successors, (780), 3 states have internal predecessors, (780), 0 states have call successors, (0), 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 2419 [2022-12-13 17:30:23,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 17:30:23,670 INFO L225 Difference]: With dead ends: 38170 [2022-12-13 17:30:23,671 INFO L226 Difference]: Without dead ends: 19744 [2022-12-13 17:30:23,679 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2429 GetRequests, 2420 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2022-12-13 17:30:23,679 INFO L413 NwaCegarLoop]: 70 mSDtfsCounter, 52 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 740 mSolverCounterSat, 20 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 761 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 740 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2022-12-13 17:30:23,680 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 75 Invalid, 761 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 740 Invalid, 1 Unknown, 0 Unchecked, 3.0s Time] [2022-12-13 17:30:23,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19744 states. [2022-12-13 17:30:23,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19744 to 18757. [2022-12-13 17:30:23,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18757 states, 18756 states have (on average 1.0132224354873107) internal successors, (19004), 18756 states have internal predecessors, (19004), 0 states have call successors, (0), 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 17:30:23,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18757 states to 18757 states and 19004 transitions. [2022-12-13 17:30:23,863 INFO L78 Accepts]: Start accepts. Automaton has 18757 states and 19004 transitions. Word has length 2419 [2022-12-13 17:30:23,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 17:30:23,864 INFO L495 AbstractCegarLoop]: Abstraction has 18757 states and 19004 transitions. [2022-12-13 17:30:23,864 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 260.0) internal successors, (780), 3 states have internal predecessors, (780), 0 states have call successors, (0), 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 17:30:23,864 INFO L276 IsEmpty]: Start isEmpty. Operand 18757 states and 19004 transitions. [2022-12-13 17:30:23,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2497 [2022-12-13 17:30:23,910 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:30:23,911 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 17:30:23,917 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4240e5d-fd72-47e0-89ba-30a466f551e7/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-12-13 17:30:24,111 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4240e5d-fd72-47e0-89ba-30a466f551e7/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2022-12-13 17:30:24,113 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 17:30:24,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:30:24,115 INFO L85 PathProgramCache]: Analyzing trace with hash 1752321269, now seen corresponding path program 1 times [2022-12-13 17:30:24,115 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:30:24,115 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [574707167] [2022-12-13 17:30:24,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:30:24,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:30:24,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:30:28,842 INFO L134 CoverageAnalysis]: Checked inductivity of 12274 backedges. 5555 proven. 1128 refuted. 0 times theorem prover too weak. 5591 trivial. 0 not checked. [2022-12-13 17:30:28,842 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:30:28,842 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [574707167] [2022-12-13 17:30:28,842 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [574707167] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 17:30:28,842 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [899768201] [2022-12-13 17:30:28,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:30:28,842 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:30:28,842 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4240e5d-fd72-47e0-89ba-30a466f551e7/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:30:28,843 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4240e5d-fd72-47e0-89ba-30a466f551e7/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 17:30:28,844 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4240e5d-fd72-47e0-89ba-30a466f551e7/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-12-13 17:30:29,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:30:29,316 INFO L263 TraceCheckSpWp]: Trace formula consists of 2896 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-13 17:30:29,326 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 17:30:29,424 INFO L134 CoverageAnalysis]: Checked inductivity of 12274 backedges. 7236 proven. 0 refuted. 0 times theorem prover too weak. 5038 trivial. 0 not checked. [2022-12-13 17:30:29,424 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 17:30:29,424 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [899768201] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:30:29,424 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 17:30:29,425 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 9 [2022-12-13 17:30:29,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1141136540] [2022-12-13 17:30:29,425 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:30:29,426 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 17:30:29,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:30:29,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 17:30:29,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2022-12-13 17:30:29,426 INFO L87 Difference]: Start difference. First operand 18757 states and 19004 transitions. Second operand has 3 states, 3 states have (on average 222.0) internal successors, (666), 3 states have internal predecessors, (666), 0 states have call successors, (0), 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 17:30:30,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:30:30,156 INFO L93 Difference]: Finished difference Result 38170 states and 38675 transitions. [2022-12-13 17:30:30,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 17:30:30,156 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 222.0) internal successors, (666), 3 states have internal predecessors, (666), 0 states have call successors, (0), 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 2496 [2022-12-13 17:30:30,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 17:30:30,171 INFO L225 Difference]: With dead ends: 38170 [2022-12-13 17:30:30,171 INFO L226 Difference]: Without dead ends: 19744 [2022-12-13 17:30:30,179 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2504 GetRequests, 2497 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2022-12-13 17:30:30,179 INFO L413 NwaCegarLoop]: 418 mSDtfsCounter, 222 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 742 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 222 SdHoareTripleChecker+Valid, 424 SdHoareTripleChecker+Invalid, 750 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 742 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-12-13 17:30:30,180 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [222 Valid, 424 Invalid, 750 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 742 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-12-13 17:30:30,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19744 states. [2022-12-13 17:30:30,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19744 to 19744. [2022-12-13 17:30:30,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19744 states, 19743 states have (on average 1.0129159702172923) internal successors, (19998), 19743 states have internal predecessors, (19998), 0 states have call successors, (0), 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 17:30:30,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19744 states to 19744 states and 19998 transitions. [2022-12-13 17:30:30,358 INFO L78 Accepts]: Start accepts. Automaton has 19744 states and 19998 transitions. Word has length 2496 [2022-12-13 17:30:30,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 17:30:30,359 INFO L495 AbstractCegarLoop]: Abstraction has 19744 states and 19998 transitions. [2022-12-13 17:30:30,359 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 222.0) internal successors, (666), 3 states have internal predecessors, (666), 0 states have call successors, (0), 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 17:30:30,359 INFO L276 IsEmpty]: Start isEmpty. Operand 19744 states and 19998 transitions. [2022-12-13 17:30:30,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2517 [2022-12-13 17:30:30,404 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:30:30,405 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 13, 13, 13, 13, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-12-13 17:30:30,410 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4240e5d-fd72-47e0-89ba-30a466f551e7/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2022-12-13 17:30:30,605 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4240e5d-fd72-47e0-89ba-30a466f551e7/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2022-12-13 17:30:30,607 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 17:30:30,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:30:30,609 INFO L85 PathProgramCache]: Analyzing trace with hash 2066475600, now seen corresponding path program 1 times [2022-12-13 17:30:30,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:30:30,609 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1772227574] [2022-12-13 17:30:30,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:30:30,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:30:30,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:30:35,006 INFO L134 CoverageAnalysis]: Checked inductivity of 13383 backedges. 4708 proven. 5325 refuted. 0 times theorem prover too weak. 3350 trivial. 0 not checked. [2022-12-13 17:30:35,006 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:30:35,006 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1772227574] [2022-12-13 17:30:35,007 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1772227574] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 17:30:35,007 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1218721968] [2022-12-13 17:30:35,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:30:35,007 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:30:35,007 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4240e5d-fd72-47e0-89ba-30a466f551e7/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:30:35,008 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4240e5d-fd72-47e0-89ba-30a466f551e7/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 17:30:35,008 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4240e5d-fd72-47e0-89ba-30a466f551e7/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-12-13 17:30:35,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:30:35,700 INFO L263 TraceCheckSpWp]: Trace formula consists of 2931 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 17:30:35,712 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 17:30:35,991 INFO L134 CoverageAnalysis]: Checked inductivity of 13383 backedges. 8127 proven. 0 refuted. 0 times theorem prover too weak. 5256 trivial. 0 not checked. [2022-12-13 17:30:35,991 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 17:30:35,991 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1218721968] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:30:35,991 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 17:30:35,993 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 10 [2022-12-13 17:30:35,993 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1382969420] [2022-12-13 17:30:35,993 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:30:35,995 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 17:30:35,995 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:30:35,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 17:30:35,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-12-13 17:30:35,996 INFO L87 Difference]: Start difference. First operand 19744 states and 19998 transitions. Second operand has 4 states, 4 states have (on average 177.25) internal successors, (709), 4 states have internal predecessors, (709), 0 states have call successors, (0), 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 17:30:36,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:30:36,967 INFO L93 Difference]: Finished difference Result 39815 states and 40332 transitions. [2022-12-13 17:30:36,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 17:30:36,967 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 177.25) internal successors, (709), 4 states have internal predecessors, (709), 0 states have call successors, (0), 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 2516 [2022-12-13 17:30:36,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 17:30:36,980 INFO L225 Difference]: With dead ends: 39815 [2022-12-13 17:30:36,980 INFO L226 Difference]: Without dead ends: 20402 [2022-12-13 17:30:36,986 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2524 GetRequests, 2516 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-12-13 17:30:36,987 INFO L413 NwaCegarLoop]: 42 mSDtfsCounter, 736 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 1092 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 736 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 1157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 1092 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-12-13 17:30:36,987 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [736 Valid, 50 Invalid, 1157 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 1092 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-12-13 17:30:36,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20402 states. [2022-12-13 17:30:37,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20402 to 19744. [2022-12-13 17:30:37,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19744 states, 19743 states have (on average 1.012865319353695) internal successors, (19997), 19743 states have internal predecessors, (19997), 0 states have call successors, (0), 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 17:30:37,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19744 states to 19744 states and 19997 transitions. [2022-12-13 17:30:37,169 INFO L78 Accepts]: Start accepts. Automaton has 19744 states and 19997 transitions. Word has length 2516 [2022-12-13 17:30:37,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 17:30:37,171 INFO L495 AbstractCegarLoop]: Abstraction has 19744 states and 19997 transitions. [2022-12-13 17:30:37,171 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 177.25) internal successors, (709), 4 states have internal predecessors, (709), 0 states have call successors, (0), 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 17:30:37,171 INFO L276 IsEmpty]: Start isEmpty. Operand 19744 states and 19997 transitions. [2022-12-13 17:30:37,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2646 [2022-12-13 17:30:37,222 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:30:37,223 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 13, 13, 13, 13, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 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] [2022-12-13 17:30:37,229 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4240e5d-fd72-47e0-89ba-30a466f551e7/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2022-12-13 17:30:37,424 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4240e5d-fd72-47e0-89ba-30a466f551e7/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2022-12-13 17:30:37,425 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 17:30:37,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:30:37,427 INFO L85 PathProgramCache]: Analyzing trace with hash 804456178, now seen corresponding path program 1 times [2022-12-13 17:30:37,427 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:30:37,427 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2096758865] [2022-12-13 17:30:37,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:30:37,428 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:30:37,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:30:42,214 INFO L134 CoverageAnalysis]: Checked inductivity of 14325 backedges. 4811 proven. 5916 refuted. 0 times theorem prover too weak. 3598 trivial. 0 not checked. [2022-12-13 17:30:42,215 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:30:42,215 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2096758865] [2022-12-13 17:30:42,215 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2096758865] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 17:30:42,215 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1020471625] [2022-12-13 17:30:42,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:30:42,215 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:30:42,215 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4240e5d-fd72-47e0-89ba-30a466f551e7/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:30:42,216 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4240e5d-fd72-47e0-89ba-30a466f551e7/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 17:30:42,217 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4240e5d-fd72-47e0-89ba-30a466f551e7/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-12-13 17:30:42,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:30:42,719 INFO L263 TraceCheckSpWp]: Trace formula consists of 3060 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-13 17:30:42,731 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 17:30:43,051 INFO L134 CoverageAnalysis]: Checked inductivity of 14325 backedges. 9069 proven. 0 refuted. 0 times theorem prover too weak. 5256 trivial. 0 not checked. [2022-12-13 17:30:43,051 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 17:30:43,051 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1020471625] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:30:43,051 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 17:30:43,052 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 10 [2022-12-13 17:30:43,052 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [416773277] [2022-12-13 17:30:43,052 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:30:43,053 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 17:30:43,053 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:30:43,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 17:30:43,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-12-13 17:30:43,053 INFO L87 Difference]: Start difference. First operand 19744 states and 19997 transitions. Second operand has 4 states, 4 states have (on average 209.5) internal successors, (838), 4 states have internal predecessors, (838), 0 states have call successors, (0), 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 17:30:44,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:30:44,016 INFO L93 Difference]: Finished difference Result 39815 states and 40327 transitions. [2022-12-13 17:30:44,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 17:30:44,017 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 209.5) internal successors, (838), 4 states have internal predecessors, (838), 0 states have call successors, (0), 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 2645 [2022-12-13 17:30:44,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 17:30:44,030 INFO L225 Difference]: With dead ends: 39815 [2022-12-13 17:30:44,030 INFO L226 Difference]: Without dead ends: 20402 [2022-12-13 17:30:44,038 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2653 GetRequests, 2645 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-12-13 17:30:44,038 INFO L413 NwaCegarLoop]: 43 mSDtfsCounter, 473 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 1079 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 473 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 1152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 1079 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-12-13 17:30:44,039 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [473 Valid, 51 Invalid, 1152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 1079 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-12-13 17:30:44,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20402 states. [2022-12-13 17:30:44,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20402 to 19415. [2022-12-13 17:30:44,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19415 states, 19414 states have (on average 1.0124652312763984) internal successors, (19656), 19414 states have internal predecessors, (19656), 0 states have call successors, (0), 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 17:30:44,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19415 states to 19415 states and 19656 transitions. [2022-12-13 17:30:44,261 INFO L78 Accepts]: Start accepts. Automaton has 19415 states and 19656 transitions. Word has length 2645 [2022-12-13 17:30:44,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 17:30:44,262 INFO L495 AbstractCegarLoop]: Abstraction has 19415 states and 19656 transitions. [2022-12-13 17:30:44,262 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 209.5) internal successors, (838), 4 states have internal predecessors, (838), 0 states have call successors, (0), 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 17:30:44,262 INFO L276 IsEmpty]: Start isEmpty. Operand 19415 states and 19656 transitions. [2022-12-13 17:30:44,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2669 [2022-12-13 17:30:44,316 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:30:44,317 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 17:30:44,322 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4240e5d-fd72-47e0-89ba-30a466f551e7/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2022-12-13 17:30:44,517 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4240e5d-fd72-47e0-89ba-30a466f551e7/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2022-12-13 17:30:44,519 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 17:30:44,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:30:44,522 INFO L85 PathProgramCache]: Analyzing trace with hash 1273347591, now seen corresponding path program 1 times [2022-12-13 17:30:44,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:30:44,523 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2018672178] [2022-12-13 17:30:44,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:30:44,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:30:44,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:30:49,694 INFO L134 CoverageAnalysis]: Checked inductivity of 13334 backedges. 5984 proven. 1128 refuted. 0 times theorem prover too weak. 6222 trivial. 0 not checked. [2022-12-13 17:30:49,694 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:30:49,694 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2018672178] [2022-12-13 17:30:49,694 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2018672178] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 17:30:49,694 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [973824165] [2022-12-13 17:30:49,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:30:49,694 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:30:49,694 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4240e5d-fd72-47e0-89ba-30a466f551e7/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:30:49,695 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4240e5d-fd72-47e0-89ba-30a466f551e7/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 17:30:49,696 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4240e5d-fd72-47e0-89ba-30a466f551e7/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-12-13 17:30:50,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:30:50,260 INFO L263 TraceCheckSpWp]: Trace formula consists of 3068 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-13 17:30:50,272 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 17:30:50,695 INFO L134 CoverageAnalysis]: Checked inductivity of 13334 backedges. 7970 proven. 0 refuted. 0 times theorem prover too weak. 5364 trivial. 0 not checked. [2022-12-13 17:30:50,695 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 17:30:50,695 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [973824165] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:30:50,695 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 17:30:50,696 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 9 [2022-12-13 17:30:50,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [954705679] [2022-12-13 17:30:50,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:30:50,696 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 17:30:50,696 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:30:50,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 17:30:50,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-12-13 17:30:50,697 INFO L87 Difference]: Start difference. First operand 19415 states and 19656 transitions. Second operand has 3 states, 3 states have (on average 263.0) internal successors, (789), 3 states have internal predecessors, (789), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:30:51,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:30:51,494 INFO L93 Difference]: Finished difference Result 39486 states and 39976 transitions. [2022-12-13 17:30:51,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 17:30:51,495 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 263.0) internal successors, (789), 3 states have internal predecessors, (789), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 2668 [2022-12-13 17:30:51,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 17:30:51,507 INFO L225 Difference]: With dead ends: 39486 [2022-12-13 17:30:51,507 INFO L226 Difference]: Without dead ends: 20402 [2022-12-13 17:30:51,512 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2676 GetRequests, 2669 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-12-13 17:30:51,513 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 88 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 742 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 799 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 742 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-12-13 17:30:51,513 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [88 Valid, 42 Invalid, 799 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 742 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-12-13 17:30:51,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20402 states. [2022-12-13 17:30:51,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20402 to 19086. [2022-12-13 17:30:51,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19086 states, 19085 states have (on average 1.0113701860099555) internal successors, (19302), 19085 states have internal predecessors, (19302), 0 states have call successors, (0), 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 17:30:51,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19086 states to 19086 states and 19302 transitions. [2022-12-13 17:30:51,689 INFO L78 Accepts]: Start accepts. Automaton has 19086 states and 19302 transitions. Word has length 2668 [2022-12-13 17:30:51,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 17:30:51,689 INFO L495 AbstractCegarLoop]: Abstraction has 19086 states and 19302 transitions. [2022-12-13 17:30:51,689 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 263.0) internal successors, (789), 3 states have internal predecessors, (789), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:30:51,689 INFO L276 IsEmpty]: Start isEmpty. Operand 19086 states and 19302 transitions. [2022-12-13 17:30:51,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2689 [2022-12-13 17:30:51,740 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:30:51,740 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 13, 13, 13, 13, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-12-13 17:30:51,746 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4240e5d-fd72-47e0-89ba-30a466f551e7/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2022-12-13 17:30:51,941 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4240e5d-fd72-47e0-89ba-30a466f551e7/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:30:51,942 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 17:30:51,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:30:51,944 INFO L85 PathProgramCache]: Analyzing trace with hash -1679536414, now seen corresponding path program 1 times [2022-12-13 17:30:51,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:30:51,945 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [458874371] [2022-12-13 17:30:51,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:30:51,945 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:30:52,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:30:58,360 INFO L134 CoverageAnalysis]: Checked inductivity of 14370 backedges. 5716 proven. 1878 refuted. 0 times theorem prover too weak. 6776 trivial. 0 not checked. [2022-12-13 17:30:58,360 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:30:58,360 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [458874371] [2022-12-13 17:30:58,360 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [458874371] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 17:30:58,360 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1009994859] [2022-12-13 17:30:58,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:30:58,360 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:30:58,360 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4240e5d-fd72-47e0-89ba-30a466f551e7/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:30:58,361 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4240e5d-fd72-47e0-89ba-30a466f551e7/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 17:30:58,362 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4240e5d-fd72-47e0-89ba-30a466f551e7/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-12-13 17:30:58,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:30:58,871 INFO L263 TraceCheckSpWp]: Trace formula consists of 3103 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-13 17:30:58,883 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 17:31:06,482 WARN L233 SmtUtils]: Spent 7.44s on a formula simplification. DAG size of input: 53 DAG size of output: 25 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-13 17:31:11,068 INFO L134 CoverageAnalysis]: Checked inductivity of 14370 backedges. 8919 proven. 0 refuted. 0 times theorem prover too weak. 5451 trivial. 0 not checked. [2022-12-13 17:31:11,068 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 17:31:11,068 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1009994859] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:31:11,068 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 17:31:11,069 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 11 [2022-12-13 17:31:11,069 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [540252495] [2022-12-13 17:31:11,069 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:31:11,069 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 17:31:11,070 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:31:11,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 17:31:11,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-12-13 17:31:11,070 INFO L87 Difference]: Start difference. First operand 19086 states and 19302 transitions. Second operand has 3 states, 3 states have (on average 266.6666666666667) internal successors, (800), 3 states have internal predecessors, (800), 0 states have call successors, (0), 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 17:31:13,790 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 [0] [2022-12-13 17:31:15,183 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.10s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-12-13 17:31:17,223 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-12-13 17:31:19,647 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-12-13 17:31:21,740 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-12-13 17:31:24,491 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-12-13 17:31:27,215 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-12-13 17:31:29,226 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-12-13 17:31:31,403 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-12-13 17:31:33,435 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-12-13 17:31:35,449 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-12-13 17:31:37,474 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-12-13 17:31:39,687 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-12-13 17:31:42,037 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-12-13 17:31:44,208 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-12-13 17:31:45,537 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.33s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-12-13 17:31:47,556 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-12-13 17:31:49,770 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 [0] [2022-12-13 17:31:50,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:31:50,001 INFO L93 Difference]: Finished difference Result 40144 states and 40610 transitions. [2022-12-13 17:31:50,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 17:31:50,002 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 266.6666666666667) internal successors, (800), 3 states have internal predecessors, (800), 0 states have call successors, (0), 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 2688 [2022-12-13 17:31:50,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 17:31:50,018 INFO L225 Difference]: With dead ends: 40144 [2022-12-13 17:31:50,018 INFO L226 Difference]: Without dead ends: 21389 [2022-12-13 17:31:50,027 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2698 GetRequests, 2689 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 7.5s TimeCoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-12-13 17:31:50,027 INFO L413 NwaCegarLoop]: 52 mSDtfsCounter, 65 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 748 mSolverCounterSat, 45 mSolverCounterUnsat, 16 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 38.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 809 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 748 IncrementalHoareTripleChecker+Invalid, 16 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 38.8s IncrementalHoareTripleChecker+Time [2022-12-13 17:31:50,027 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 57 Invalid, 809 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 748 Invalid, 16 Unknown, 0 Unchecked, 38.8s Time] [2022-12-13 17:31:50,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21389 states. [2022-12-13 17:31:50,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21389 to 19086. [2022-12-13 17:31:50,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19086 states, 19085 states have (on average 1.0112653916688499) internal successors, (19300), 19085 states have internal predecessors, (19300), 0 states have call successors, (0), 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 17:31:50,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19086 states to 19086 states and 19300 transitions. [2022-12-13 17:31:50,228 INFO L78 Accepts]: Start accepts. Automaton has 19086 states and 19300 transitions. Word has length 2688 [2022-12-13 17:31:50,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 17:31:50,229 INFO L495 AbstractCegarLoop]: Abstraction has 19086 states and 19300 transitions. [2022-12-13 17:31:50,229 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 266.6666666666667) internal successors, (800), 3 states have internal predecessors, (800), 0 states have call successors, (0), 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 17:31:50,229 INFO L276 IsEmpty]: Start isEmpty. Operand 19086 states and 19300 transitions. [2022-12-13 17:31:50,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2788 [2022-12-13 17:31:50,297 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:31:50,298 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 14, 14, 14, 13, 13, 13, 13, 13, 13, 13, 13, 13, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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] [2022-12-13 17:31:50,304 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4240e5d-fd72-47e0-89ba-30a466f551e7/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-12-13 17:31:50,498 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4240e5d-fd72-47e0-89ba-30a466f551e7/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:31:50,500 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 17:31:50,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:31:50,504 INFO L85 PathProgramCache]: Analyzing trace with hash -1707498350, now seen corresponding path program 1 times [2022-12-13 17:31:50,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:31:50,504 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2008930534] [2022-12-13 17:31:50,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:31:50,505 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:31:50,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:31:57,195 INFO L134 CoverageAnalysis]: Checked inductivity of 14364 backedges. 5696 proven. 1938 refuted. 0 times theorem prover too weak. 6730 trivial. 0 not checked. [2022-12-13 17:31:57,195 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:31:57,195 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2008930534] [2022-12-13 17:31:57,195 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2008930534] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 17:31:57,195 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1302427207] [2022-12-13 17:31:57,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:31:57,195 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:31:57,196 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4240e5d-fd72-47e0-89ba-30a466f551e7/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:31:57,196 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4240e5d-fd72-47e0-89ba-30a466f551e7/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 17:31:57,197 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4240e5d-fd72-47e0-89ba-30a466f551e7/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-12-13 17:31:57,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:31:57,709 INFO L263 TraceCheckSpWp]: Trace formula consists of 3209 conjuncts, 5 conjunts are in the unsatisfiable core [2022-12-13 17:31:57,721 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 17:34:28,954 WARN L233 SmtUtils]: Spent 54.08s on a formula simplification. DAG size of input: 537 DAG size of output: 356 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-13 17:34:54,540 WARN L233 SmtUtils]: Spent 13.36s on a formula simplification. DAG size of input: 348 DAG size of output: 260 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)