./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem13_label06.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_06f3ac32-49c9-4bc0-a436-75201aa6705e/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06f3ac32-49c9-4bc0-a436-75201aa6705e/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_06f3ac32-49c9-4bc0-a436-75201aa6705e/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06f3ac32-49c9-4bc0-a436-75201aa6705e/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem13_label06.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06f3ac32-49c9-4bc0-a436-75201aa6705e/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_06f3ac32-49c9-4bc0-a436-75201aa6705e/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 df2b5c022524eef310b1de6141625f90d464b51feae63f6fbead126ad9876e79 --- 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 11:45:43,164 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 11:45:43,166 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 11:45:43,185 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 11:45:43,185 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 11:45:43,186 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 11:45:43,187 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 11:45:43,189 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 11:45:43,190 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 11:45:43,191 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 11:45:43,192 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 11:45:43,193 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 11:45:43,194 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 11:45:43,195 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 11:45:43,196 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 11:45:43,197 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 11:45:43,198 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 11:45:43,199 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 11:45:43,200 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 11:45:43,202 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 11:45:43,204 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 11:45:43,205 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 11:45:43,206 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 11:45:43,207 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 11:45:43,210 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 11:45:43,211 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 11:45:43,211 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 11:45:43,212 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 11:45:43,212 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 11:45:43,213 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 11:45:43,213 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 11:45:43,214 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 11:45:43,215 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 11:45:43,216 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 11:45:43,217 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 11:45:43,217 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 11:45:43,218 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 11:45:43,218 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 11:45:43,218 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 11:45:43,219 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 11:45:43,220 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 11:45:43,221 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06f3ac32-49c9-4bc0-a436-75201aa6705e/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-12-13 11:45:43,242 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 11:45:43,242 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 11:45:43,243 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 11:45:43,243 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 11:45:43,243 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 11:45:43,244 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 11:45:43,244 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 11:45:43,245 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 11:45:43,245 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 11:45:43,245 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 11:45:43,245 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 11:45:43,245 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 11:45:43,246 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 11:45:43,246 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 11:45:43,246 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 11:45:43,246 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 11:45:43,246 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 11:45:43,247 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 11:45:43,247 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 11:45:43,247 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 11:45:43,247 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 11:45:43,247 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 11:45:43,248 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 11:45:43,248 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 11:45:43,248 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 11:45:43,248 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 11:45:43,248 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 11:45:43,249 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 11:45:43,249 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 11:45:43,249 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 11:45:43,249 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 11:45:43,249 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 11:45:43,250 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 11:45:43,250 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 11:45:43,250 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 11:45:43,250 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_06f3ac32-49c9-4bc0-a436-75201aa6705e/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06f3ac32-49c9-4bc0-a436-75201aa6705e/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> df2b5c022524eef310b1de6141625f90d464b51feae63f6fbead126ad9876e79 [2022-12-13 11:45:43,442 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 11:45:43,460 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 11:45:43,462 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 11:45:43,463 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 11:45:43,463 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 11:45:43,464 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06f3ac32-49c9-4bc0-a436-75201aa6705e/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/eca-rers2012/Problem13_label06.c [2022-12-13 11:45:46,090 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 11:45:46,446 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 11:45:46,446 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06f3ac32-49c9-4bc0-a436-75201aa6705e/sv-benchmarks/c/eca-rers2012/Problem13_label06.c [2022-12-13 11:45:46,467 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06f3ac32-49c9-4bc0-a436-75201aa6705e/bin/uautomizer-uyxdKDjOR8/data/7608711f6/d941de3d32774dce9f021f025955c4f7/FLAG8294f9d1f [2022-12-13 11:45:46,491 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06f3ac32-49c9-4bc0-a436-75201aa6705e/bin/uautomizer-uyxdKDjOR8/data/7608711f6/d941de3d32774dce9f021f025955c4f7 [2022-12-13 11:45:46,493 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 11:45:46,494 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 11:45:46,495 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 11:45:46,495 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 11:45:46,498 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 11:45:46,499 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 11:45:46" (1/1) ... [2022-12-13 11:45:46,500 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@691bb28b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:45:46, skipping insertion in model container [2022-12-13 11:45:46,500 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 11:45:46" (1/1) ... [2022-12-13 11:45:46,507 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 11:45:46,629 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 11:45:46,785 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_06f3ac32-49c9-4bc0-a436-75201aa6705e/sv-benchmarks/c/eca-rers2012/Problem13_label06.c[3786,3799] [2022-12-13 11:45:47,531 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 11:45:47,539 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 11:45:47,553 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_06f3ac32-49c9-4bc0-a436-75201aa6705e/sv-benchmarks/c/eca-rers2012/Problem13_label06.c[3786,3799] [2022-12-13 11:45:48,028 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 11:45:48,043 INFO L208 MainTranslator]: Completed translation [2022-12-13 11:45:48,044 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:45:48 WrapperNode [2022-12-13 11:45:48,044 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 11:45:48,045 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 11:45:48,045 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 11:45:48,045 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 11:45:48,050 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:45:48" (1/1) ... [2022-12-13 11:45:48,102 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:45:48" (1/1) ... [2022-12-13 11:45:48,482 INFO L138 Inliner]: procedures = 17, calls = 11, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 5583 [2022-12-13 11:45:48,482 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 11:45:48,483 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 11:45:48,483 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 11:45:48,483 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 11:45:48,492 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:45:48" (1/1) ... [2022-12-13 11:45:48,493 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:45:48" (1/1) ... [2022-12-13 11:45:48,603 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:45:48" (1/1) ... [2022-12-13 11:45:48,604 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:45:48" (1/1) ... [2022-12-13 11:45:48,846 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:45:48" (1/1) ... [2022-12-13 11:45:48,867 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:45:48" (1/1) ... [2022-12-13 11:45:48,935 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:45:48" (1/1) ... [2022-12-13 11:45:48,949 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:45:48" (1/1) ... [2022-12-13 11:45:49,002 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 11:45:49,002 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 11:45:49,002 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 11:45:49,002 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 11:45:49,003 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:45:48" (1/1) ... [2022-12-13 11:45:49,007 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 11:45:49,016 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06f3ac32-49c9-4bc0-a436-75201aa6705e/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:45:49,026 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06f3ac32-49c9-4bc0-a436-75201aa6705e/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 11:45:49,027 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06f3ac32-49c9-4bc0-a436-75201aa6705e/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 11:45:49,056 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 11:45:49,056 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 11:45:49,056 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 11:45:49,056 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 11:45:49,125 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 11:45:49,126 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 11:45:53,660 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 11:45:53,677 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 11:45:53,677 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-12-13 11:45:53,680 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 11:45:53 BoogieIcfgContainer [2022-12-13 11:45:53,681 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 11:45:53,683 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 11:45:53,683 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 11:45:53,687 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 11:45:53,687 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 11:45:46" (1/3) ... [2022-12-13 11:45:53,688 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@323e9a33 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 11:45:53, skipping insertion in model container [2022-12-13 11:45:53,688 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:45:48" (2/3) ... [2022-12-13 11:45:53,688 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@323e9a33 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 11:45:53, skipping insertion in model container [2022-12-13 11:45:53,688 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 11:45:53" (3/3) ... [2022-12-13 11:45:53,690 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem13_label06.c [2022-12-13 11:45:53,709 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 11:45:53,709 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-13 11:45:53,778 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 11:45:53,785 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;@32a2078e, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 11:45:53,785 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-12-13 11:45:53,791 INFO L276 IsEmpty]: Start isEmpty. Operand has 1098 states, 1096 states have (on average 1.8275547445255473) internal successors, (2003), 1097 states have internal predecessors, (2003), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:45:53,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-12-13 11:45:53,796 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:45:53,797 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:45:53,797 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:45:53,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:45:53,801 INFO L85 PathProgramCache]: Analyzing trace with hash -1225036359, now seen corresponding path program 1 times [2022-12-13 11:45:53,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:45:53,808 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [98541562] [2022-12-13 11:45:53,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:45:53,809 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:45:53,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:45:54,005 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 11:45:54,005 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:45:54,005 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [98541562] [2022-12-13 11:45:54,006 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [98541562] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:45:54,006 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:45:54,006 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 11:45:54,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1302650375] [2022-12-13 11:45:54,008 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:45:54,011 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 11:45:54,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:45:54,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 11:45:54,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 11:45:54,037 INFO L87 Difference]: Start difference. First operand has 1098 states, 1096 states have (on average 1.8275547445255473) internal successors, (2003), 1097 states have internal predecessors, (2003), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 2 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:45:58,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:45:58,061 INFO L93 Difference]: Finished difference Result 3121 states and 5804 transitions. [2022-12-13 11:45:58,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 11:45:58,062 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 2 states have internal predecessors, (25), 0 states have call successors, (0), 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 25 [2022-12-13 11:45:58,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:45:58,078 INFO L225 Difference]: With dead ends: 3121 [2022-12-13 11:45:58,078 INFO L226 Difference]: Without dead ends: 1944 [2022-12-13 11:45:58,082 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 11:45:58,084 INFO L413 NwaCegarLoop]: 438 mSDtfsCounter, 964 mSDsluCounter, 137 mSDsCounter, 0 mSdLazyCounter, 3124 mSolverCounterSat, 577 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 964 SdHoareTripleChecker+Valid, 575 SdHoareTripleChecker+Invalid, 3701 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 577 IncrementalHoareTripleChecker+Valid, 3124 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2022-12-13 11:45:58,085 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [964 Valid, 575 Invalid, 3701 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [577 Valid, 3124 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2022-12-13 11:45:58,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1944 states. [2022-12-13 11:45:58,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1944 to 1873. [2022-12-13 11:45:58,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1873 states, 1872 states have (on average 1.7393162393162394) internal successors, (3256), 1872 states have internal predecessors, (3256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:45:58,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1873 states to 1873 states and 3256 transitions. [2022-12-13 11:45:58,156 INFO L78 Accepts]: Start accepts. Automaton has 1873 states and 3256 transitions. Word has length 25 [2022-12-13 11:45:58,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:45:58,157 INFO L495 AbstractCegarLoop]: Abstraction has 1873 states and 3256 transitions. [2022-12-13 11:45:58,157 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 2 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:45:58,157 INFO L276 IsEmpty]: Start isEmpty. Operand 1873 states and 3256 transitions. [2022-12-13 11:45:58,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-12-13 11:45:58,158 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:45:58,158 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:45:58,158 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 11:45:58,159 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:45:58,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:45:58,159 INFO L85 PathProgramCache]: Analyzing trace with hash 1708850290, now seen corresponding path program 1 times [2022-12-13 11:45:58,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:45:58,159 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [140704462] [2022-12-13 11:45:58,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:45:58,160 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:45:58,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:45:58,335 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:45:58,335 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:45:58,335 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [140704462] [2022-12-13 11:45:58,335 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [140704462] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:45:58,336 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:45:58,336 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 11:45:58,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [406122155] [2022-12-13 11:45:58,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:45:58,337 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 11:45:58,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:45:58,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 11:45:58,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 11:45:58,338 INFO L87 Difference]: Start difference. First operand 1873 states and 3256 transitions. Second operand has 3 states, 3 states have (on average 30.0) internal successors, (90), 2 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:46:01,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:46:01,685 INFO L93 Difference]: Finished difference Result 5351 states and 9369 transitions. [2022-12-13 11:46:01,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 11:46:01,685 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 2 states have internal predecessors, (90), 0 states have call successors, (0), 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 90 [2022-12-13 11:46:01,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:46:01,696 INFO L225 Difference]: With dead ends: 5351 [2022-12-13 11:46:01,696 INFO L226 Difference]: Without dead ends: 3480 [2022-12-13 11:46:01,698 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 11:46:01,699 INFO L413 NwaCegarLoop]: 926 mSDtfsCounter, 884 mSDsluCounter, 153 mSDsCounter, 0 mSdLazyCounter, 2338 mSolverCounterSat, 878 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 884 SdHoareTripleChecker+Valid, 1079 SdHoareTripleChecker+Invalid, 3216 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 878 IncrementalHoareTripleChecker+Valid, 2338 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2022-12-13 11:46:01,699 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [884 Valid, 1079 Invalid, 3216 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [878 Valid, 2338 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2022-12-13 11:46:01,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3480 states. [2022-12-13 11:46:01,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3480 to 3479. [2022-12-13 11:46:01,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3479 states, 3478 states have (on average 1.518688901667625) internal successors, (5282), 3478 states have internal predecessors, (5282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:46:01,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3479 states to 3479 states and 5282 transitions. [2022-12-13 11:46:01,744 INFO L78 Accepts]: Start accepts. Automaton has 3479 states and 5282 transitions. Word has length 90 [2022-12-13 11:46:01,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:46:01,744 INFO L495 AbstractCegarLoop]: Abstraction has 3479 states and 5282 transitions. [2022-12-13 11:46:01,744 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 2 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:46:01,745 INFO L276 IsEmpty]: Start isEmpty. Operand 3479 states and 5282 transitions. [2022-12-13 11:46:01,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-12-13 11:46:01,746 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:46:01,746 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:46:01,746 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-13 11:46:01,746 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:46:01,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:46:01,747 INFO L85 PathProgramCache]: Analyzing trace with hash 1846075927, now seen corresponding path program 1 times [2022-12-13 11:46:01,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:46:01,747 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1880112443] [2022-12-13 11:46:01,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:46:01,747 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:46:01,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:46:01,830 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:46:01,831 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:46:01,831 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1880112443] [2022-12-13 11:46:01,831 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1880112443] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:46:01,831 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:46:01,831 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 11:46:01,831 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [481874429] [2022-12-13 11:46:01,831 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:46:01,832 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 11:46:01,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:46:01,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 11:46:01,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 11:46:01,833 INFO L87 Difference]: Start difference. First operand 3479 states and 5282 transitions. Second operand has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 2 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:46:04,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:46:04,901 INFO L93 Difference]: Finished difference Result 10142 states and 15438 transitions. [2022-12-13 11:46:04,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 11:46:04,902 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 2 states have internal predecessors, (92), 0 states have call successors, (0), 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 92 [2022-12-13 11:46:04,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:46:04,914 INFO L225 Difference]: With dead ends: 10142 [2022-12-13 11:46:04,914 INFO L226 Difference]: Without dead ends: 6665 [2022-12-13 11:46:04,917 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 11:46:04,917 INFO L413 NwaCegarLoop]: 744 mSDtfsCounter, 976 mSDsluCounter, 133 mSDsCounter, 0 mSdLazyCounter, 2553 mSolverCounterSat, 772 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 976 SdHoareTripleChecker+Valid, 877 SdHoareTripleChecker+Invalid, 3325 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 772 IncrementalHoareTripleChecker+Valid, 2553 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2022-12-13 11:46:04,918 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [976 Valid, 877 Invalid, 3325 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [772 Valid, 2553 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2022-12-13 11:46:04,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6665 states. [2022-12-13 11:46:04,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6665 to 6657. [2022-12-13 11:46:04,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6657 states, 6656 states have (on average 1.3728966346153846) internal successors, (9138), 6656 states have internal predecessors, (9138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:46:04,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6657 states to 6657 states and 9138 transitions. [2022-12-13 11:46:04,993 INFO L78 Accepts]: Start accepts. Automaton has 6657 states and 9138 transitions. Word has length 92 [2022-12-13 11:46:04,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:46:04,994 INFO L495 AbstractCegarLoop]: Abstraction has 6657 states and 9138 transitions. [2022-12-13 11:46:04,994 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 2 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:46:04,994 INFO L276 IsEmpty]: Start isEmpty. Operand 6657 states and 9138 transitions. [2022-12-13 11:46:04,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-12-13 11:46:04,995 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:46:04,995 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:46:04,995 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-13 11:46:04,995 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:46:04,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:46:04,995 INFO L85 PathProgramCache]: Analyzing trace with hash -490134330, now seen corresponding path program 1 times [2022-12-13 11:46:04,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:46:04,996 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1251281039] [2022-12-13 11:46:04,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:46:04,996 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:46:05,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:46:05,076 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:46:05,076 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:46:05,076 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1251281039] [2022-12-13 11:46:05,077 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1251281039] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:46:05,077 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:46:05,077 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 11:46:05,077 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [130050681] [2022-12-13 11:46:05,077 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:46:05,078 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 11:46:05,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:46:05,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 11:46:05,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 11:46:05,079 INFO L87 Difference]: Start difference. First operand 6657 states and 9138 transitions. Second operand has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 2 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:46:08,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:46:08,277 INFO L93 Difference]: Finished difference Result 19637 states and 26969 transitions. [2022-12-13 11:46:08,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 11:46:08,278 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 2 states have internal predecessors, (98), 0 states have call successors, (0), 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 98 [2022-12-13 11:46:08,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:46:08,300 INFO L225 Difference]: With dead ends: 19637 [2022-12-13 11:46:08,300 INFO L226 Difference]: Without dead ends: 12982 [2022-12-13 11:46:08,305 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 11:46:08,306 INFO L413 NwaCegarLoop]: 1012 mSDtfsCounter, 791 mSDsluCounter, 151 mSDsCounter, 0 mSdLazyCounter, 2485 mSolverCounterSat, 792 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 791 SdHoareTripleChecker+Valid, 1163 SdHoareTripleChecker+Invalid, 3277 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 792 IncrementalHoareTripleChecker+Valid, 2485 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2022-12-13 11:46:08,306 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [791 Valid, 1163 Invalid, 3277 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [792 Valid, 2485 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2022-12-13 11:46:08,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12982 states. [2022-12-13 11:46:08,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12982 to 12175. [2022-12-13 11:46:08,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12175 states, 12174 states have (on average 1.2529160505996386) internal successors, (15253), 12174 states have internal predecessors, (15253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:46:08,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12175 states to 12175 states and 15253 transitions. [2022-12-13 11:46:08,472 INFO L78 Accepts]: Start accepts. Automaton has 12175 states and 15253 transitions. Word has length 98 [2022-12-13 11:46:08,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:46:08,472 INFO L495 AbstractCegarLoop]: Abstraction has 12175 states and 15253 transitions. [2022-12-13 11:46:08,472 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 2 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:46:08,472 INFO L276 IsEmpty]: Start isEmpty. Operand 12175 states and 15253 transitions. [2022-12-13 11:46:08,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2022-12-13 11:46:08,473 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:46:08,474 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:46:08,474 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-13 11:46:08,474 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:46:08,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:46:08,474 INFO L85 PathProgramCache]: Analyzing trace with hash -602304082, now seen corresponding path program 1 times [2022-12-13 11:46:08,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:46:08,475 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [575252135] [2022-12-13 11:46:08,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:46:08,475 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:46:08,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:46:08,587 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-12-13 11:46:08,588 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:46:08,588 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [575252135] [2022-12-13 11:46:08,588 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [575252135] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:46:08,588 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:46:08,588 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 11:46:08,589 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [507163541] [2022-12-13 11:46:08,589 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:46:08,589 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 11:46:08,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:46:08,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 11:46:08,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 11:46:08,590 INFO L87 Difference]: Start difference. First operand 12175 states and 15253 transitions. Second operand has 3 states, 3 states have (on average 31.0) internal successors, (93), 2 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:46:12,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:46:12,221 INFO L93 Difference]: Finished difference Result 36203 states and 45331 transitions. [2022-12-13 11:46:12,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 11:46:12,222 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 2 states have internal predecessors, (93), 0 states have call successors, (0), 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 114 [2022-12-13 11:46:12,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:46:12,255 INFO L225 Difference]: With dead ends: 36203 [2022-12-13 11:46:12,255 INFO L226 Difference]: Without dead ends: 24030 [2022-12-13 11:46:12,264 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 11:46:12,265 INFO L413 NwaCegarLoop]: 534 mSDtfsCounter, 914 mSDsluCounter, 165 mSDsCounter, 0 mSdLazyCounter, 2919 mSolverCounterSat, 531 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 914 SdHoareTripleChecker+Valid, 699 SdHoareTripleChecker+Invalid, 3450 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 531 IncrementalHoareTripleChecker+Valid, 2919 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2022-12-13 11:46:12,265 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [914 Valid, 699 Invalid, 3450 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [531 Valid, 2919 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2022-12-13 11:46:12,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24030 states. [2022-12-13 11:46:12,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24030 to 24023. [2022-12-13 11:46:12,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24023 states, 24022 states have (on average 1.2180917492298726) internal successors, (29261), 24022 states have internal predecessors, (29261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:46:12,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24023 states to 24023 states and 29261 transitions. [2022-12-13 11:46:12,493 INFO L78 Accepts]: Start accepts. Automaton has 24023 states and 29261 transitions. Word has length 114 [2022-12-13 11:46:12,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:46:12,493 INFO L495 AbstractCegarLoop]: Abstraction has 24023 states and 29261 transitions. [2022-12-13 11:46:12,494 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 2 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:46:12,494 INFO L276 IsEmpty]: Start isEmpty. Operand 24023 states and 29261 transitions. [2022-12-13 11:46:12,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2022-12-13 11:46:12,495 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:46:12,495 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:46:12,495 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-13 11:46:12,495 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:46:12,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:46:12,495 INFO L85 PathProgramCache]: Analyzing trace with hash -587547500, now seen corresponding path program 1 times [2022-12-13 11:46:12,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:46:12,495 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1797881860] [2022-12-13 11:46:12,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:46:12,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:46:12,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:46:12,636 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:46:12,636 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:46:12,636 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1797881860] [2022-12-13 11:46:12,637 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1797881860] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:46:12,637 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:46:12,637 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 11:46:12,637 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [549222495] [2022-12-13 11:46:12,637 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:46:12,637 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 11:46:12,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:46:12,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 11:46:12,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 11:46:12,638 INFO L87 Difference]: Start difference. First operand 24023 states and 29261 transitions. Second operand has 3 states, 3 states have (on average 47.0) internal successors, (141), 2 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:46:15,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:46:15,608 INFO L93 Difference]: Finished difference Result 42534 states and 52581 transitions. [2022-12-13 11:46:15,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 11:46:15,608 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.0) internal successors, (141), 2 states have internal predecessors, (141), 0 states have call successors, (0), 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 141 [2022-12-13 11:46:15,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:46:15,633 INFO L225 Difference]: With dead ends: 42534 [2022-12-13 11:46:15,633 INFO L226 Difference]: Without dead ends: 24032 [2022-12-13 11:46:15,644 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 11:46:15,644 INFO L413 NwaCegarLoop]: 1027 mSDtfsCounter, 730 mSDsluCounter, 184 mSDsCounter, 0 mSdLazyCounter, 2713 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 730 SdHoareTripleChecker+Valid, 1211 SdHoareTripleChecker+Invalid, 2717 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 2713 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-12-13 11:46:15,645 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [730 Valid, 1211 Invalid, 2717 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 2713 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2022-12-13 11:46:15,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24032 states. [2022-12-13 11:46:15,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24032 to 24023. [2022-12-13 11:46:15,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24023 states, 24022 states have (on average 1.216634751477812) internal successors, (29226), 24022 states have internal predecessors, (29226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:46:15,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24023 states to 24023 states and 29226 transitions. [2022-12-13 11:46:15,876 INFO L78 Accepts]: Start accepts. Automaton has 24023 states and 29226 transitions. Word has length 141 [2022-12-13 11:46:15,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:46:15,876 INFO L495 AbstractCegarLoop]: Abstraction has 24023 states and 29226 transitions. [2022-12-13 11:46:15,877 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.0) internal successors, (141), 2 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:46:15,877 INFO L276 IsEmpty]: Start isEmpty. Operand 24023 states and 29226 transitions. [2022-12-13 11:46:15,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2022-12-13 11:46:15,879 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:46:15,879 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:46:15,879 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-13 11:46:15,880 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:46:15,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:46:15,880 INFO L85 PathProgramCache]: Analyzing trace with hash 1900685016, now seen corresponding path program 1 times [2022-12-13 11:46:15,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:46:15,880 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [258426527] [2022-12-13 11:46:15,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:46:15,880 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:46:15,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:46:15,996 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 133 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:46:15,996 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:46:15,996 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [258426527] [2022-12-13 11:46:15,996 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [258426527] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:46:15,996 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:46:15,996 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 11:46:15,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [741078996] [2022-12-13 11:46:15,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:46:15,997 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 11:46:15,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:46:15,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 11:46:15,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 11:46:15,997 INFO L87 Difference]: Start difference. First operand 24023 states and 29226 transitions. Second operand has 3 states, 3 states have (on average 79.66666666666667) internal successors, (239), 3 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:46:19,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:46:19,688 INFO L93 Difference]: Finished difference Result 67709 states and 83085 transitions. [2022-12-13 11:46:19,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 11:46:19,689 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 79.66666666666667) internal successors, (239), 3 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 239 [2022-12-13 11:46:19,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:46:19,729 INFO L225 Difference]: With dead ends: 67709 [2022-12-13 11:46:19,729 INFO L226 Difference]: Without dead ends: 43688 [2022-12-13 11:46:19,743 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 11:46:19,744 INFO L413 NwaCegarLoop]: 1849 mSDtfsCounter, 841 mSDsluCounter, 137 mSDsCounter, 0 mSdLazyCounter, 2479 mSolverCounterSat, 807 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 841 SdHoareTripleChecker+Valid, 1986 SdHoareTripleChecker+Invalid, 3286 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 807 IncrementalHoareTripleChecker+Valid, 2479 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2022-12-13 11:46:19,744 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [841 Valid, 1986 Invalid, 3286 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [807 Valid, 2479 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2022-12-13 11:46:19,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43688 states. [2022-12-13 11:46:20,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43688 to 42895. [2022-12-13 11:46:20,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42895 states, 42894 states have (on average 1.176364992772882) internal successors, (50459), 42894 states have internal predecessors, (50459), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:46:20,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42895 states to 42895 states and 50459 transitions. [2022-12-13 11:46:20,115 INFO L78 Accepts]: Start accepts. Automaton has 42895 states and 50459 transitions. Word has length 239 [2022-12-13 11:46:20,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:46:20,116 INFO L495 AbstractCegarLoop]: Abstraction has 42895 states and 50459 transitions. [2022-12-13 11:46:20,116 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 79.66666666666667) internal successors, (239), 3 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:46:20,116 INFO L276 IsEmpty]: Start isEmpty. Operand 42895 states and 50459 transitions. [2022-12-13 11:46:20,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2022-12-13 11:46:20,118 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:46:20,119 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:46:20,119 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-13 11:46:20,119 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:46:20,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:46:20,119 INFO L85 PathProgramCache]: Analyzing trace with hash 1845766239, now seen corresponding path program 1 times [2022-12-13 11:46:20,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:46:20,119 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1302184449] [2022-12-13 11:46:20,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:46:20,119 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:46:20,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:46:20,355 INFO L134 CoverageAnalysis]: Checked inductivity of 273 backedges. 160 proven. 0 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2022-12-13 11:46:20,356 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:46:20,356 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1302184449] [2022-12-13 11:46:20,356 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1302184449] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:46:20,356 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:46:20,356 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 11:46:20,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1344878113] [2022-12-13 11:46:20,356 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:46:20,357 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 11:46:20,357 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:46:20,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 11:46:20,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 11:46:20,358 INFO L87 Difference]: Start difference. First operand 42895 states and 50459 transitions. Second operand has 3 states, 3 states have (on average 55.333333333333336) internal successors, (166), 2 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:46:23,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:46:23,610 INFO L93 Difference]: Finished difference Result 85001 states and 100119 transitions. [2022-12-13 11:46:23,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 11:46:23,611 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 55.333333333333336) internal successors, (166), 2 states have internal predecessors, (166), 0 states have call successors, (0), 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 254 [2022-12-13 11:46:23,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:46:23,646 INFO L225 Difference]: With dead ends: 85001 [2022-12-13 11:46:23,646 INFO L226 Difference]: Without dead ends: 42895 [2022-12-13 11:46:23,666 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 11:46:23,667 INFO L413 NwaCegarLoop]: 1066 mSDtfsCounter, 700 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 2503 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 700 SdHoareTripleChecker+Valid, 1195 SdHoareTripleChecker+Invalid, 2507 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 2503 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2022-12-13 11:46:23,667 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [700 Valid, 1195 Invalid, 2507 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 2503 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2022-12-13 11:46:23,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42895 states. [2022-12-13 11:46:23,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42895 to 42895. [2022-12-13 11:46:24,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42895 states, 42894 states have (on average 1.1762484263533362) internal successors, (50454), 42894 states have internal predecessors, (50454), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:46:24,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42895 states to 42895 states and 50454 transitions. [2022-12-13 11:46:24,066 INFO L78 Accepts]: Start accepts. Automaton has 42895 states and 50454 transitions. Word has length 254 [2022-12-13 11:46:24,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:46:24,066 INFO L495 AbstractCegarLoop]: Abstraction has 42895 states and 50454 transitions. [2022-12-13 11:46:24,066 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.333333333333336) internal successors, (166), 2 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:46:24,066 INFO L276 IsEmpty]: Start isEmpty. Operand 42895 states and 50454 transitions. [2022-12-13 11:46:24,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2022-12-13 11:46:24,068 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:46:24,068 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:46:24,068 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-13 11:46:24,068 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:46:24,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:46:24,069 INFO L85 PathProgramCache]: Analyzing trace with hash 74446792, now seen corresponding path program 1 times [2022-12-13 11:46:24,069 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:46:24,069 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [747534989] [2022-12-13 11:46:24,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:46:24,069 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:46:24,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:46:24,178 INFO L134 CoverageAnalysis]: Checked inductivity of 273 backedges. 250 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2022-12-13 11:46:24,178 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:46:24,178 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [747534989] [2022-12-13 11:46:24,178 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [747534989] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:46:24,178 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:46:24,178 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 11:46:24,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1163457571] [2022-12-13 11:46:24,179 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:46:24,179 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 11:46:24,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:46:24,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 11:46:24,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 11:46:24,179 INFO L87 Difference]: Start difference. First operand 42895 states and 50454 transitions. Second operand has 3 states, 3 states have (on average 79.66666666666667) internal successors, (239), 3 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:46:27,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:46:27,353 INFO L93 Difference]: Finished difference Result 105473 states and 126163 transitions. [2022-12-13 11:46:27,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 11:46:27,354 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 79.66666666666667) internal successors, (239), 3 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 261 [2022-12-13 11:46:27,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:46:27,411 INFO L225 Difference]: With dead ends: 105473 [2022-12-13 11:46:27,411 INFO L226 Difference]: Without dead ends: 63367 [2022-12-13 11:46:27,435 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 11:46:27,435 INFO L413 NwaCegarLoop]: 813 mSDtfsCounter, 883 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 2386 mSolverCounterSat, 900 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 883 SdHoareTripleChecker+Valid, 930 SdHoareTripleChecker+Invalid, 3286 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 900 IncrementalHoareTripleChecker+Valid, 2386 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-12-13 11:46:27,436 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [883 Valid, 930 Invalid, 3286 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [900 Valid, 2386 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2022-12-13 11:46:27,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63367 states. [2022-12-13 11:46:27,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63367 to 60996. [2022-12-13 11:46:27,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60996 states, 60995 states have (on average 1.1659480285269284) internal successors, (71117), 60995 states have internal predecessors, (71117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:46:28,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60996 states to 60996 states and 71117 transitions. [2022-12-13 11:46:28,015 INFO L78 Accepts]: Start accepts. Automaton has 60996 states and 71117 transitions. Word has length 261 [2022-12-13 11:46:28,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:46:28,015 INFO L495 AbstractCegarLoop]: Abstraction has 60996 states and 71117 transitions. [2022-12-13 11:46:28,015 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 79.66666666666667) internal successors, (239), 3 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:46:28,015 INFO L276 IsEmpty]: Start isEmpty. Operand 60996 states and 71117 transitions. [2022-12-13 11:46:28,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 267 [2022-12-13 11:46:28,017 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:46:28,017 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:46:28,017 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-12-13 11:46:28,017 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:46:28,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:46:28,018 INFO L85 PathProgramCache]: Analyzing trace with hash -1251984086, now seen corresponding path program 1 times [2022-12-13 11:46:28,018 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:46:28,018 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1696018984] [2022-12-13 11:46:28,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:46:28,018 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:46:28,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:46:28,829 INFO L134 CoverageAnalysis]: Checked inductivity of 158 backedges. 45 proven. 113 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:46:28,829 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:46:28,829 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1696018984] [2022-12-13 11:46:28,829 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1696018984] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 11:46:28,830 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1495981767] [2022-12-13 11:46:28,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:46:28,830 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:46:28,830 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06f3ac32-49c9-4bc0-a436-75201aa6705e/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:46:28,831 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06f3ac32-49c9-4bc0-a436-75201aa6705e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 11:46:28,832 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06f3ac32-49c9-4bc0-a436-75201aa6705e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-13 11:46:28,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:46:28,940 INFO L263 TraceCheckSpWp]: Trace formula consists of 383 conjuncts, 2 conjunts are in the unsatisfiable core [2022-12-13 11:46:28,949 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:46:29,006 INFO L134 CoverageAnalysis]: Checked inductivity of 158 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2022-12-13 11:46:29,006 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 11:46:29,006 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1495981767] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:46:29,007 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 11:46:29,007 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 9 [2022-12-13 11:46:29,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [123110760] [2022-12-13 11:46:29,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:46:29,008 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 11:46:29,008 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:46:29,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 11:46:29,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-12-13 11:46:29,008 INFO L87 Difference]: Start difference. First operand 60996 states and 71117 transitions. Second operand has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:46:32,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:46:32,133 INFO L93 Difference]: Finished difference Result 121201 states and 141439 transitions. [2022-12-13 11:46:32,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 11:46:32,134 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 0 states have call successors, (0), 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 266 [2022-12-13 11:46:32,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:46:32,190 INFO L225 Difference]: With dead ends: 121201 [2022-12-13 11:46:32,190 INFO L226 Difference]: Without dead ends: 60994 [2022-12-13 11:46:32,213 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 272 GetRequests, 265 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-12-13 11:46:32,214 INFO L413 NwaCegarLoop]: 1358 mSDtfsCounter, 1182 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 2469 mSolverCounterSat, 446 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1182 SdHoareTripleChecker+Valid, 1439 SdHoareTripleChecker+Invalid, 2915 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 446 IncrementalHoareTripleChecker+Valid, 2469 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-12-13 11:46:32,214 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1182 Valid, 1439 Invalid, 2915 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [446 Valid, 2469 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2022-12-13 11:46:32,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60994 states. [2022-12-13 11:46:32,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60994 to 60993. [2022-12-13 11:46:32,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60993 states, 60992 states have (on average 1.12839388772298) internal successors, (68823), 60992 states have internal predecessors, (68823), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:46:32,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60993 states to 60993 states and 68823 transitions. [2022-12-13 11:46:32,863 INFO L78 Accepts]: Start accepts. Automaton has 60993 states and 68823 transitions. Word has length 266 [2022-12-13 11:46:32,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:46:32,863 INFO L495 AbstractCegarLoop]: Abstraction has 60993 states and 68823 transitions. [2022-12-13 11:46:32,863 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:46:32,864 INFO L276 IsEmpty]: Start isEmpty. Operand 60993 states and 68823 transitions. [2022-12-13 11:46:32,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 317 [2022-12-13 11:46:32,867 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:46:32,867 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-12-13 11:46:32,873 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06f3ac32-49c9-4bc0-a436-75201aa6705e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-13 11:46:33,068 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06f3ac32-49c9-4bc0-a436-75201aa6705e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:46:33,070 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:46:33,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:46:33,071 INFO L85 PathProgramCache]: Analyzing trace with hash 2114116621, now seen corresponding path program 1 times [2022-12-13 11:46:33,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:46:33,072 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1990055444] [2022-12-13 11:46:33,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:46:33,073 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:46:33,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:46:33,291 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2022-12-13 11:46:33,292 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:46:33,292 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1990055444] [2022-12-13 11:46:33,292 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1990055444] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:46:33,292 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:46:33,292 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 11:46:33,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1486899643] [2022-12-13 11:46:33,292 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:46:33,293 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 11:46:33,293 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:46:33,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 11:46:33,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 11:46:33,294 INFO L87 Difference]: Start difference. First operand 60993 states and 68823 transitions. Second operand has 3 states, 3 states have (on average 64.33333333333333) internal successors, (193), 3 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:46:36,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:46:36,249 INFO L93 Difference]: Finished difference Result 121188 states and 136844 transitions. [2022-12-13 11:46:36,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 11:46:36,250 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 64.33333333333333) internal successors, (193), 3 states have internal predecessors, (193), 0 states have call successors, (0), 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 316 [2022-12-13 11:46:36,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:46:36,305 INFO L225 Difference]: With dead ends: 121188 [2022-12-13 11:46:36,305 INFO L226 Difference]: Without dead ends: 60984 [2022-12-13 11:46:36,329 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 11:46:36,330 INFO L413 NwaCegarLoop]: 689 mSDtfsCounter, 1115 mSDsluCounter, 132 mSDsCounter, 0 mSdLazyCounter, 2393 mSolverCounterSat, 528 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1115 SdHoareTripleChecker+Valid, 821 SdHoareTripleChecker+Invalid, 2921 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 528 IncrementalHoareTripleChecker+Valid, 2393 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-12-13 11:46:36,330 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1115 Valid, 821 Invalid, 2921 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [528 Valid, 2393 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2022-12-13 11:46:36,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60984 states. [2022-12-13 11:46:36,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60984 to 60983. [2022-12-13 11:46:36,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60983 states, 60982 states have (on average 1.0927158833754222) internal successors, (66636), 60982 states have internal predecessors, (66636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:46:36,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60983 states to 60983 states and 66636 transitions. [2022-12-13 11:46:36,892 INFO L78 Accepts]: Start accepts. Automaton has 60983 states and 66636 transitions. Word has length 316 [2022-12-13 11:46:36,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:46:36,892 INFO L495 AbstractCegarLoop]: Abstraction has 60983 states and 66636 transitions. [2022-12-13 11:46:36,892 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 64.33333333333333) internal successors, (193), 3 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:46:36,892 INFO L276 IsEmpty]: Start isEmpty. Operand 60983 states and 66636 transitions. [2022-12-13 11:46:36,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 355 [2022-12-13 11:46:36,896 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:46:36,897 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:46:36,897 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-12-13 11:46:36,897 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:46:36,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:46:36,898 INFO L85 PathProgramCache]: Analyzing trace with hash -71008917, now seen corresponding path program 1 times [2022-12-13 11:46:36,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:46:36,898 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1049070318] [2022-12-13 11:46:36,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:46:36,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:46:36,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:46:37,259 INFO L134 CoverageAnalysis]: Checked inductivity of 536 backedges. 91 proven. 0 refuted. 0 times theorem prover too weak. 445 trivial. 0 not checked. [2022-12-13 11:46:37,259 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:46:37,259 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1049070318] [2022-12-13 11:46:37,259 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1049070318] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:46:37,259 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:46:37,259 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 11:46:37,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1789507296] [2022-12-13 11:46:37,259 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:46:37,260 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 11:46:37,260 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:46:37,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 11:46:37,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 11:46:37,261 INFO L87 Difference]: Start difference. First operand 60983 states and 66636 transitions. Second operand has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:46:41,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:46:41,494 INFO L93 Difference]: Finished difference Result 151203 states and 165614 transitions. [2022-12-13 11:46:41,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 11:46:41,494 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 0 states have call successors, (0), 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 354 [2022-12-13 11:46:41,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:46:41,572 INFO L225 Difference]: With dead ends: 151203 [2022-12-13 11:46:41,572 INFO L226 Difference]: Without dead ends: 91009 [2022-12-13 11:46:41,597 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 11:46:41,597 INFO L413 NwaCegarLoop]: 458 mSDtfsCounter, 971 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 3088 mSolverCounterSat, 635 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 971 SdHoareTripleChecker+Valid, 560 SdHoareTripleChecker+Invalid, 3723 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 635 IncrementalHoareTripleChecker+Valid, 3088 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2022-12-13 11:46:41,598 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [971 Valid, 560 Invalid, 3723 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [635 Valid, 3088 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2022-12-13 11:46:41,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91009 states. [2022-12-13 11:46:42,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91009 to 87766. [2022-12-13 11:46:42,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87766 states, 87765 states have (on average 1.0968837235800148) internal successors, (96268), 87765 states have internal predecessors, (96268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:46:42,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87766 states to 87766 states and 96268 transitions. [2022-12-13 11:46:42,383 INFO L78 Accepts]: Start accepts. Automaton has 87766 states and 96268 transitions. Word has length 354 [2022-12-13 11:46:42,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:46:42,384 INFO L495 AbstractCegarLoop]: Abstraction has 87766 states and 96268 transitions. [2022-12-13 11:46:42,384 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:46:42,384 INFO L276 IsEmpty]: Start isEmpty. Operand 87766 states and 96268 transitions. [2022-12-13 11:46:42,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 429 [2022-12-13 11:46:42,390 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:46:42,390 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 3, 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] [2022-12-13 11:46:42,391 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-12-13 11:46:42,391 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:46:42,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:46:42,391 INFO L85 PathProgramCache]: Analyzing trace with hash -142831359, now seen corresponding path program 1 times [2022-12-13 11:46:42,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:46:42,391 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [893665194] [2022-12-13 11:46:42,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:46:42,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:46:42,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:46:42,574 INFO L134 CoverageAnalysis]: Checked inductivity of 838 backedges. 405 proven. 0 refuted. 0 times theorem prover too weak. 433 trivial. 0 not checked. [2022-12-13 11:46:42,574 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:46:42,575 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [893665194] [2022-12-13 11:46:42,575 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [893665194] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:46:42,575 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:46:42,575 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 11:46:42,575 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [685196761] [2022-12-13 11:46:42,575 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:46:42,576 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 11:46:42,576 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:46:42,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 11:46:42,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 11:46:42,577 INFO L87 Difference]: Start difference. First operand 87766 states and 96268 transitions. Second operand has 3 states, 3 states have (on average 67.66666666666667) internal successors, (203), 3 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:46:46,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:46:46,830 INFO L93 Difference]: Finished difference Result 203087 states and 224428 transitions. [2022-12-13 11:46:46,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 11:46:46,831 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 67.66666666666667) internal successors, (203), 3 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 428 [2022-12-13 11:46:46,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:46:46,957 INFO L225 Difference]: With dead ends: 203087 [2022-12-13 11:46:46,957 INFO L226 Difference]: Without dead ends: 116110 [2022-12-13 11:46:47,002 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 11:46:47,002 INFO L413 NwaCegarLoop]: 682 mSDtfsCounter, 953 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 2383 mSolverCounterSat, 986 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 953 SdHoareTripleChecker+Valid, 762 SdHoareTripleChecker+Invalid, 3369 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 986 IncrementalHoareTripleChecker+Valid, 2383 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2022-12-13 11:46:47,003 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [953 Valid, 762 Invalid, 3369 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [986 Valid, 2383 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2022-12-13 11:46:47,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116110 states. [2022-12-13 11:46:47,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116110 to 114521. [2022-12-13 11:46:48,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114521 states, 114520 states have (on average 1.0993712888578415) internal successors, (125900), 114520 states have internal predecessors, (125900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:46:48,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114521 states to 114521 states and 125900 transitions. [2022-12-13 11:46:48,141 INFO L78 Accepts]: Start accepts. Automaton has 114521 states and 125900 transitions. Word has length 428 [2022-12-13 11:46:48,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:46:48,141 INFO L495 AbstractCegarLoop]: Abstraction has 114521 states and 125900 transitions. [2022-12-13 11:46:48,141 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 67.66666666666667) internal successors, (203), 3 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:46:48,142 INFO L276 IsEmpty]: Start isEmpty. Operand 114521 states and 125900 transitions. [2022-12-13 11:46:48,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 442 [2022-12-13 11:46:48,148 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:46:48,148 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:46:48,148 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-12-13 11:46:48,149 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:46:48,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:46:48,149 INFO L85 PathProgramCache]: Analyzing trace with hash -1122737515, now seen corresponding path program 1 times [2022-12-13 11:46:48,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:46:48,149 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1036802067] [2022-12-13 11:46:48,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:46:48,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:46:48,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:46:49,104 INFO L134 CoverageAnalysis]: Checked inductivity of 419 backedges. 286 proven. 110 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2022-12-13 11:46:49,104 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:46:49,104 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1036802067] [2022-12-13 11:46:49,104 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1036802067] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 11:46:49,105 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [139505070] [2022-12-13 11:46:49,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:46:49,105 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:46:49,105 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06f3ac32-49c9-4bc0-a436-75201aa6705e/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:46:49,106 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06f3ac32-49c9-4bc0-a436-75201aa6705e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 11:46:49,107 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06f3ac32-49c9-4bc0-a436-75201aa6705e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-13 11:46:49,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:46:49,276 INFO L263 TraceCheckSpWp]: Trace formula consists of 589 conjuncts, 2 conjunts are in the unsatisfiable core [2022-12-13 11:46:49,282 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:46:49,328 INFO L134 CoverageAnalysis]: Checked inductivity of 419 backedges. 68 proven. 0 refuted. 0 times theorem prover too weak. 351 trivial. 0 not checked. [2022-12-13 11:46:49,328 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 11:46:49,328 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [139505070] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:46:49,329 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 11:46:49,329 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 8 [2022-12-13 11:46:49,329 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1125620244] [2022-12-13 11:46:49,329 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:46:49,330 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 11:46:49,330 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:46:49,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 11:46:49,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-12-13 11:46:49,331 INFO L87 Difference]: Start difference. First operand 114521 states and 125900 transitions. Second operand has 3 states, 3 states have (on average 68.33333333333333) internal successors, (205), 3 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:46:53,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:46:53,004 INFO L93 Difference]: Finished difference Result 229830 states and 252598 transitions. [2022-12-13 11:46:53,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 11:46:53,005 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 68.33333333333333) internal successors, (205), 3 states have internal predecessors, (205), 0 states have call successors, (0), 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 441 [2022-12-13 11:46:53,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:46:53,121 INFO L225 Difference]: With dead ends: 229830 [2022-12-13 11:46:53,121 INFO L226 Difference]: Without dead ends: 116098 [2022-12-13 11:46:53,153 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 446 GetRequests, 440 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-12-13 11:46:53,153 INFO L413 NwaCegarLoop]: 1413 mSDtfsCounter, 1013 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 2492 mSolverCounterSat, 587 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1013 SdHoareTripleChecker+Valid, 1501 SdHoareTripleChecker+Invalid, 3079 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 587 IncrementalHoareTripleChecker+Valid, 2492 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2022-12-13 11:46:53,154 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1013 Valid, 1501 Invalid, 3079 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [587 Valid, 2492 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2022-12-13 11:46:53,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116098 states. [2022-12-13 11:46:54,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116098 to 114512. [2022-12-13 11:46:54,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114512 states, 114511 states have (on average 1.0736610456637354) internal successors, (122946), 114511 states have internal predecessors, (122946), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:46:54,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114512 states to 114512 states and 122946 transitions. [2022-12-13 11:46:54,276 INFO L78 Accepts]: Start accepts. Automaton has 114512 states and 122946 transitions. Word has length 441 [2022-12-13 11:46:54,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:46:54,277 INFO L495 AbstractCegarLoop]: Abstraction has 114512 states and 122946 transitions. [2022-12-13 11:46:54,277 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 68.33333333333333) internal successors, (205), 3 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:46:54,277 INFO L276 IsEmpty]: Start isEmpty. Operand 114512 states and 122946 transitions. [2022-12-13 11:46:54,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 517 [2022-12-13 11:46:54,287 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:46:54,287 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:46:54,292 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06f3ac32-49c9-4bc0-a436-75201aa6705e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-13 11:46:54,488 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06f3ac32-49c9-4bc0-a436-75201aa6705e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-12-13 11:46:54,489 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:46:54,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:46:54,490 INFO L85 PathProgramCache]: Analyzing trace with hash -587355096, now seen corresponding path program 1 times [2022-12-13 11:46:54,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:46:54,490 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [623926726] [2022-12-13 11:46:54,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:46:54,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:46:54,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:46:56,017 INFO L134 CoverageAnalysis]: Checked inductivity of 419 backedges. 283 proven. 113 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2022-12-13 11:46:56,017 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:46:56,017 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [623926726] [2022-12-13 11:46:56,017 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [623926726] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 11:46:56,017 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1902130630] [2022-12-13 11:46:56,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:46:56,017 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:46:56,017 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06f3ac32-49c9-4bc0-a436-75201aa6705e/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:46:56,018 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06f3ac32-49c9-4bc0-a436-75201aa6705e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 11:46:56,019 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06f3ac32-49c9-4bc0-a436-75201aa6705e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-13 11:46:56,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:46:56,172 INFO L263 TraceCheckSpWp]: Trace formula consists of 663 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-13 11:46:56,176 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:46:56,567 INFO L134 CoverageAnalysis]: Checked inductivity of 419 backedges. 283 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2022-12-13 11:46:56,567 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 11:46:56,567 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1902130630] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:46:56,567 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 11:46:56,567 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [7] total 8 [2022-12-13 11:46:56,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1785269044] [2022-12-13 11:46:56,567 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:46:56,568 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 11:46:56,568 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:46:56,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 11:46:56,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2022-12-13 11:46:56,568 INFO L87 Difference]: Start difference. First operand 114512 states and 122946 transitions. Second operand has 3 states, 3 states have (on average 127.33333333333333) internal successors, (382), 2 states have internal predecessors, (382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:46:59,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:46:59,758 INFO L93 Difference]: Finished difference Result 219581 states and 236216 transitions. [2022-12-13 11:46:59,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 11:46:59,759 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 127.33333333333333) internal successors, (382), 2 states have internal predecessors, (382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 516 [2022-12-13 11:46:59,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:46:59,866 INFO L225 Difference]: With dead ends: 219581 [2022-12-13 11:46:59,866 INFO L226 Difference]: Without dead ends: 117666 [2022-12-13 11:46:59,908 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 522 GetRequests, 515 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2022-12-13 11:46:59,908 INFO L413 NwaCegarLoop]: 1019 mSDtfsCounter, 683 mSDsluCounter, 134 mSDsCounter, 0 mSdLazyCounter, 2448 mSolverCounterSat, 113 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 683 SdHoareTripleChecker+Valid, 1153 SdHoareTripleChecker+Invalid, 2561 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 113 IncrementalHoareTripleChecker+Valid, 2448 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-12-13 11:46:59,909 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [683 Valid, 1153 Invalid, 2561 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [113 Valid, 2448 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2022-12-13 11:46:59,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117666 states. [2022-12-13 11:47:00,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117666 to 115298. [2022-12-13 11:47:00,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115298 states, 115297 states have (on average 1.0675906571723461) internal successors, (123090), 115297 states have internal predecessors, (123090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:47:01,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115298 states to 115298 states and 123090 transitions. [2022-12-13 11:47:01,109 INFO L78 Accepts]: Start accepts. Automaton has 115298 states and 123090 transitions. Word has length 516 [2022-12-13 11:47:01,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:47:01,110 INFO L495 AbstractCegarLoop]: Abstraction has 115298 states and 123090 transitions. [2022-12-13 11:47:01,110 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 127.33333333333333) internal successors, (382), 2 states have internal predecessors, (382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:47:01,110 INFO L276 IsEmpty]: Start isEmpty. Operand 115298 states and 123090 transitions. [2022-12-13 11:47:01,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 568 [2022-12-13 11:47:01,127 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:47:01,127 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:47:01,132 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06f3ac32-49c9-4bc0-a436-75201aa6705e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-12-13 11:47:01,328 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06f3ac32-49c9-4bc0-a436-75201aa6705e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:47:01,329 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:47:01,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:47:01,330 INFO L85 PathProgramCache]: Analyzing trace with hash 985642900, now seen corresponding path program 1 times [2022-12-13 11:47:01,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:47:01,331 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1947850924] [2022-12-13 11:47:01,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:47:01,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:47:01,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:47:01,646 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 500 proven. 0 refuted. 0 times theorem prover too weak. 490 trivial. 0 not checked. [2022-12-13 11:47:01,646 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:47:01,646 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1947850924] [2022-12-13 11:47:01,646 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1947850924] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:47:01,646 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:47:01,646 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 11:47:01,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1251677226] [2022-12-13 11:47:01,646 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:47:01,647 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 11:47:01,647 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:47:01,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 11:47:01,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 11:47:01,647 INFO L87 Difference]: Start difference. First operand 115298 states and 123090 transitions. Second operand has 3 states, 3 states have (on average 104.33333333333333) internal successors, (313), 3 states have internal predecessors, (313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:47:05,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:47:05,417 INFO L93 Difference]: Finished difference Result 257369 states and 275828 transitions. [2022-12-13 11:47:05,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 11:47:05,417 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 104.33333333333333) internal successors, (313), 3 states have internal predecessors, (313), 0 states have call successors, (0), 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 567 [2022-12-13 11:47:05,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:47:05,616 INFO L225 Difference]: With dead ends: 257369 [2022-12-13 11:47:05,616 INFO L226 Difference]: Without dead ends: 142073 [2022-12-13 11:47:05,647 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 11:47:05,648 INFO L413 NwaCegarLoop]: 1759 mSDtfsCounter, 695 mSDsluCounter, 145 mSDsCounter, 0 mSdLazyCounter, 2503 mSolverCounterSat, 436 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 695 SdHoareTripleChecker+Valid, 1904 SdHoareTripleChecker+Invalid, 2939 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 436 IncrementalHoareTripleChecker+Valid, 2503 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2022-12-13 11:47:05,648 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [695 Valid, 1904 Invalid, 2939 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [436 Valid, 2503 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2022-12-13 11:47:05,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142073 states. [2022-12-13 11:47:07,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142073 to 139695. [2022-12-13 11:47:07,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 139695 states, 139694 states have (on average 1.0605895743553768) internal successors, (148158), 139694 states have internal predecessors, (148158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:47:07,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139695 states to 139695 states and 148158 transitions. [2022-12-13 11:47:07,233 INFO L78 Accepts]: Start accepts. Automaton has 139695 states and 148158 transitions. Word has length 567 [2022-12-13 11:47:07,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:47:07,234 INFO L495 AbstractCegarLoop]: Abstraction has 139695 states and 148158 transitions. [2022-12-13 11:47:07,234 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 104.33333333333333) internal successors, (313), 3 states have internal predecessors, (313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:47:07,234 INFO L276 IsEmpty]: Start isEmpty. Operand 139695 states and 148158 transitions. [2022-12-13 11:47:07,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 568 [2022-12-13 11:47:07,248 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:47:07,248 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:47:07,248 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-12-13 11:47:07,248 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:47:07,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:47:07,249 INFO L85 PathProgramCache]: Analyzing trace with hash 1047682514, now seen corresponding path program 1 times [2022-12-13 11:47:07,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:47:07,249 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1664991022] [2022-12-13 11:47:07,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:47:07,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:47:07,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:47:07,568 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 500 proven. 0 refuted. 0 times theorem prover too weak. 490 trivial. 0 not checked. [2022-12-13 11:47:07,568 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:47:07,568 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1664991022] [2022-12-13 11:47:07,568 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1664991022] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:47:07,568 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:47:07,569 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 11:47:07,569 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [550769666] [2022-12-13 11:47:07,569 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:47:07,569 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 11:47:07,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:47:07,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 11:47:07,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 11:47:07,570 INFO L87 Difference]: Start difference. First operand 139695 states and 148158 transitions. Second operand has 3 states, 3 states have (on average 104.33333333333333) internal successors, (313), 3 states have internal predecessors, (313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:47:12,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:47:12,154 INFO L93 Difference]: Finished difference Result 307832 states and 326431 transitions. [2022-12-13 11:47:12,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 11:47:12,155 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 104.33333333333333) internal successors, (313), 3 states have internal predecessors, (313), 0 states have call successors, (0), 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 567 [2022-12-13 11:47:12,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:47:12,318 INFO L225 Difference]: With dead ends: 307832 [2022-12-13 11:47:12,318 INFO L226 Difference]: Without dead ends: 168926 [2022-12-13 11:47:12,379 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 11:47:12,379 INFO L413 NwaCegarLoop]: 770 mSDtfsCounter, 789 mSDsluCounter, 120 mSDsCounter, 0 mSdLazyCounter, 3098 mSolverCounterSat, 361 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 789 SdHoareTripleChecker+Valid, 890 SdHoareTripleChecker+Invalid, 3459 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 361 IncrementalHoareTripleChecker+Valid, 3098 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2022-12-13 11:47:12,379 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [789 Valid, 890 Invalid, 3459 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [361 Valid, 3098 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2022-12-13 11:47:12,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168926 states. [2022-12-13 11:47:13,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168926 to 138124. [2022-12-13 11:47:13,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138124 states, 138123 states have (on average 1.0606126423550024) internal successors, (146495), 138123 states have internal predecessors, (146495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:47:13,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138124 states to 138124 states and 146495 transitions. [2022-12-13 11:47:13,906 INFO L78 Accepts]: Start accepts. Automaton has 138124 states and 146495 transitions. Word has length 567 [2022-12-13 11:47:13,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:47:13,907 INFO L495 AbstractCegarLoop]: Abstraction has 138124 states and 146495 transitions. [2022-12-13 11:47:13,907 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 104.33333333333333) internal successors, (313), 3 states have internal predecessors, (313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:47:13,907 INFO L276 IsEmpty]: Start isEmpty. Operand 138124 states and 146495 transitions. [2022-12-13 11:47:13,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 596 [2022-12-13 11:47:13,922 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:47:13,922 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2022-12-13 11:47:13,922 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-12-13 11:47:13,923 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:47:13,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:47:13,923 INFO L85 PathProgramCache]: Analyzing trace with hash 363197939, now seen corresponding path program 1 times [2022-12-13 11:47:13,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:47:13,923 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1078668467] [2022-12-13 11:47:13,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:47:13,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:47:13,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:47:14,269 INFO L134 CoverageAnalysis]: Checked inductivity of 701 backedges. 532 proven. 0 refuted. 0 times theorem prover too weak. 169 trivial. 0 not checked. [2022-12-13 11:47:14,269 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:47:14,269 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1078668467] [2022-12-13 11:47:14,269 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1078668467] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:47:14,269 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:47:14,269 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 11:47:14,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [652954913] [2022-12-13 11:47:14,270 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:47:14,270 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 11:47:14,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:47:14,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 11:47:14,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-13 11:47:14,271 INFO L87 Difference]: Start difference. First operand 138124 states and 146495 transitions. Second operand has 4 states, 4 states have (on average 112.75) internal successors, (451), 3 states have internal predecessors, (451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:47:22,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:47:22,549 INFO L93 Difference]: Finished difference Result 389013 states and 413198 transitions. [2022-12-13 11:47:22,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 11:47:22,550 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 112.75) internal successors, (451), 3 states have internal predecessors, (451), 0 states have call successors, (0), 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 595 [2022-12-13 11:47:22,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:47:22,785 INFO L225 Difference]: With dead ends: 389013 [2022-12-13 11:47:22,785 INFO L226 Difference]: Without dead ends: 251678 [2022-12-13 11:47:22,823 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-13 11:47:22,823 INFO L413 NwaCegarLoop]: 524 mSDtfsCounter, 1707 mSDsluCounter, 181 mSDsCounter, 0 mSdLazyCounter, 5761 mSolverCounterSat, 1033 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1707 SdHoareTripleChecker+Valid, 705 SdHoareTripleChecker+Invalid, 6794 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1033 IncrementalHoareTripleChecker+Valid, 5761 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.0s IncrementalHoareTripleChecker+Time [2022-12-13 11:47:22,824 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1707 Valid, 705 Invalid, 6794 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1033 Valid, 5761 Invalid, 0 Unknown, 0 Unchecked, 7.0s Time] [2022-12-13 11:47:22,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251678 states. [2022-12-13 11:47:24,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251678 to 249960. [2022-12-13 11:47:24,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 249960 states, 249959 states have (on average 1.0588456506867125) internal successors, (264668), 249959 states have internal predecessors, (264668), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:47:25,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249960 states to 249960 states and 264668 transitions. [2022-12-13 11:47:25,213 INFO L78 Accepts]: Start accepts. Automaton has 249960 states and 264668 transitions. Word has length 595 [2022-12-13 11:47:25,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:47:25,213 INFO L495 AbstractCegarLoop]: Abstraction has 249960 states and 264668 transitions. [2022-12-13 11:47:25,214 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 112.75) internal successors, (451), 3 states have internal predecessors, (451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:47:25,214 INFO L276 IsEmpty]: Start isEmpty. Operand 249960 states and 264668 transitions. [2022-12-13 11:47:25,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 650 [2022-12-13 11:47:25,229 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:47:25,229 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:47:25,229 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-12-13 11:47:25,229 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:47:25,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:47:25,230 INFO L85 PathProgramCache]: Analyzing trace with hash -172065624, now seen corresponding path program 1 times [2022-12-13 11:47:25,230 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:47:25,230 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1540467544] [2022-12-13 11:47:25,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:47:25,230 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:47:25,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:47:25,781 INFO L134 CoverageAnalysis]: Checked inductivity of 975 backedges. 791 proven. 0 refuted. 0 times theorem prover too weak. 184 trivial. 0 not checked. [2022-12-13 11:47:25,781 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:47:25,781 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1540467544] [2022-12-13 11:47:25,781 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1540467544] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:47:25,782 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:47:25,782 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 11:47:25,782 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1083634049] [2022-12-13 11:47:25,782 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:47:25,783 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 11:47:25,783 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:47:25,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 11:47:25,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 11:47:25,784 INFO L87 Difference]: Start difference. First operand 249960 states and 264668 transitions. Second operand has 3 states, 3 states have (on average 156.0) internal successors, (468), 3 states have internal predecessors, (468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:47:30,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:47:30,038 INFO L93 Difference]: Finished difference Result 480260 states and 509276 transitions. [2022-12-13 11:47:30,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 11:47:30,039 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 156.0) internal successors, (468), 3 states have internal predecessors, (468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 649 [2022-12-13 11:47:30,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:47:30,311 INFO L225 Difference]: With dead ends: 480260 [2022-12-13 11:47:30,311 INFO L226 Difference]: Without dead ends: 249979 [2022-12-13 11:47:30,385 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 11:47:30,385 INFO L413 NwaCegarLoop]: 1644 mSDtfsCounter, 772 mSDsluCounter, 139 mSDsCounter, 0 mSdLazyCounter, 2449 mSolverCounterSat, 175 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 772 SdHoareTripleChecker+Valid, 1783 SdHoareTripleChecker+Invalid, 2624 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 175 IncrementalHoareTripleChecker+Valid, 2449 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2022-12-13 11:47:30,386 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [772 Valid, 1783 Invalid, 2624 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [175 Valid, 2449 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2022-12-13 11:47:30,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 249979 states. [2022-12-13 11:47:32,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 249979 to 246810. [2022-12-13 11:47:32,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 246810 states, 246809 states have (on average 1.0561851472191046) internal successors, (260676), 246809 states have internal predecessors, (260676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:47:33,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246810 states to 246810 states and 260676 transitions. [2022-12-13 11:47:33,028 INFO L78 Accepts]: Start accepts. Automaton has 246810 states and 260676 transitions. Word has length 649 [2022-12-13 11:47:33,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:47:33,029 INFO L495 AbstractCegarLoop]: Abstraction has 246810 states and 260676 transitions. [2022-12-13 11:47:33,029 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 156.0) internal successors, (468), 3 states have internal predecessors, (468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:47:33,029 INFO L276 IsEmpty]: Start isEmpty. Operand 246810 states and 260676 transitions. [2022-12-13 11:47:33,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 680 [2022-12-13 11:47:33,054 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:47:33,055 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:47:33,055 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-12-13 11:47:33,055 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:47:33,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:47:33,056 INFO L85 PathProgramCache]: Analyzing trace with hash 1464716747, now seen corresponding path program 1 times [2022-12-13 11:47:33,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:47:33,056 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [995634689] [2022-12-13 11:47:33,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:47:33,057 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:47:33,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:47:33,702 INFO L134 CoverageAnalysis]: Checked inductivity of 1270 backedges. 137 proven. 0 refuted. 0 times theorem prover too weak. 1133 trivial. 0 not checked. [2022-12-13 11:47:33,702 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:47:33,702 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [995634689] [2022-12-13 11:47:33,702 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [995634689] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:47:33,702 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:47:33,702 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 11:47:33,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1747639604] [2022-12-13 11:47:33,703 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:47:33,703 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 11:47:33,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:47:33,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 11:47:33,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 11:47:33,704 INFO L87 Difference]: Start difference. First operand 246810 states and 260676 transitions. Second operand has 3 states, 3 states have (on average 93.66666666666667) internal successors, (281), 3 states have internal predecessors, (281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:47:39,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:47:39,383 INFO L93 Difference]: Finished difference Result 535471 states and 566833 transitions. [2022-12-13 11:47:39,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 11:47:39,384 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 93.66666666666667) internal successors, (281), 3 states have internal predecessors, (281), 0 states have call successors, (0), 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 679 [2022-12-13 11:47:39,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:47:39,741 INFO L225 Difference]: With dead ends: 535471 [2022-12-13 11:47:39,742 INFO L226 Difference]: Without dead ends: 309918 [2022-12-13 11:47:39,842 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 11:47:39,842 INFO L413 NwaCegarLoop]: 290 mSDtfsCounter, 1015 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 2716 mSolverCounterSat, 920 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1015 SdHoareTripleChecker+Valid, 363 SdHoareTripleChecker+Invalid, 3636 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 920 IncrementalHoareTripleChecker+Valid, 2716 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2022-12-13 11:47:39,843 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1015 Valid, 363 Invalid, 3636 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [920 Valid, 2716 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2022-12-13 11:47:40,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 309918 states. [2022-12-13 11:47:42,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 309918 to 248392. [2022-12-13 11:47:42,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 248392 states, 248391 states have (on average 1.0561654810359473) internal successors, (262342), 248391 states have internal predecessors, (262342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:47:42,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248392 states to 248392 states and 262342 transitions. [2022-12-13 11:47:42,795 INFO L78 Accepts]: Start accepts. Automaton has 248392 states and 262342 transitions. Word has length 679 [2022-12-13 11:47:42,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:47:42,796 INFO L495 AbstractCegarLoop]: Abstraction has 248392 states and 262342 transitions. [2022-12-13 11:47:42,796 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 93.66666666666667) internal successors, (281), 3 states have internal predecessors, (281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:47:42,796 INFO L276 IsEmpty]: Start isEmpty. Operand 248392 states and 262342 transitions. [2022-12-13 11:47:42,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 740 [2022-12-13 11:47:42,821 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:47:42,821 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:47:42,821 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-12-13 11:47:42,821 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:47:42,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:47:42,822 INFO L85 PathProgramCache]: Analyzing trace with hash 602966290, now seen corresponding path program 1 times [2022-12-13 11:47:42,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:47:42,822 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [594954450] [2022-12-13 11:47:42,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:47:42,822 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:47:43,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:47:44,036 INFO L134 CoverageAnalysis]: Checked inductivity of 1073 backedges. 531 proven. 0 refuted. 0 times theorem prover too weak. 542 trivial. 0 not checked. [2022-12-13 11:47:44,036 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:47:44,036 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [594954450] [2022-12-13 11:47:44,036 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [594954450] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:47:44,036 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:47:44,037 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 11:47:44,037 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [849192890] [2022-12-13 11:47:44,037 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:47:44,038 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 11:47:44,038 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:47:44,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 11:47:44,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 11:47:44,039 INFO L87 Difference]: Start difference. First operand 248392 states and 262342 transitions. Second operand has 3 states, 3 states have (on average 155.66666666666666) internal successors, (467), 3 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:47:48,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:47:48,565 INFO L93 Difference]: Finished difference Result 481787 states and 509891 transitions. [2022-12-13 11:47:48,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 11:47:48,565 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 155.66666666666666) internal successors, (467), 3 states have internal predecessors, (467), 0 states have call successors, (0), 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 739 [2022-12-13 11:47:48,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:47:48,811 INFO L225 Difference]: With dead ends: 481787 [2022-12-13 11:47:48,811 INFO L226 Difference]: Without dead ends: 254652 [2022-12-13 11:47:48,864 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 11:47:48,865 INFO L413 NwaCegarLoop]: 341 mSDtfsCounter, 1001 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 2202 mSolverCounterSat, 695 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1001 SdHoareTripleChecker+Valid, 353 SdHoareTripleChecker+Invalid, 2897 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 695 IncrementalHoareTripleChecker+Valid, 2202 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2022-12-13 11:47:48,865 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1001 Valid, 353 Invalid, 2897 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [695 Valid, 2202 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2022-12-13 11:47:49,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254652 states. [2022-12-13 11:47:51,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254652 to 252291. [2022-12-13 11:47:51,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 252291 states, 252290 states have (on average 1.0518094256609458) internal successors, (265361), 252290 states have internal predecessors, (265361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:47:51,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252291 states to 252291 states and 265361 transitions. [2022-12-13 11:47:51,413 INFO L78 Accepts]: Start accepts. Automaton has 252291 states and 265361 transitions. Word has length 739 [2022-12-13 11:47:51,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:47:51,414 INFO L495 AbstractCegarLoop]: Abstraction has 252291 states and 265361 transitions. [2022-12-13 11:47:51,414 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 155.66666666666666) internal successors, (467), 3 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:47:51,414 INFO L276 IsEmpty]: Start isEmpty. Operand 252291 states and 265361 transitions. [2022-12-13 11:47:51,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 754 [2022-12-13 11:47:51,438 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:47:51,438 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 11:47:51,438 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-12-13 11:47:51,439 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:47:51,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:47:51,439 INFO L85 PathProgramCache]: Analyzing trace with hash -515654736, now seen corresponding path program 1 times [2022-12-13 11:47:51,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:47:51,439 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [274204384] [2022-12-13 11:47:51,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:47:51,439 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:47:51,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:47:51,926 INFO L134 CoverageAnalysis]: Checked inductivity of 1890 backedges. 1110 proven. 0 refuted. 0 times theorem prover too weak. 780 trivial. 0 not checked. [2022-12-13 11:47:51,926 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:47:51,927 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [274204384] [2022-12-13 11:47:51,927 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [274204384] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:47:51,927 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:47:51,927 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 11:47:51,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1046811053] [2022-12-13 11:47:51,927 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:47:51,928 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 11:47:51,928 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:47:51,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 11:47:51,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 11:47:51,929 INFO L87 Difference]: Start difference. First operand 252291 states and 265361 transitions. Second operand has 3 states, 3 states have (on average 137.0) internal successors, (411), 3 states have internal predecessors, (411), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:47:55,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:47:55,679 INFO L93 Difference]: Finished difference Result 503010 states and 529108 transitions. [2022-12-13 11:47:55,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 11:47:55,679 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 137.0) internal successors, (411), 3 states have internal predecessors, (411), 0 states have call successors, (0), 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 753 [2022-12-13 11:47:55,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:47:55,933 INFO L225 Difference]: With dead ends: 503010 [2022-12-13 11:47:55,933 INFO L226 Difference]: Without dead ends: 251508 [2022-12-13 11:47:56,013 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 11:47:56,014 INFO L413 NwaCegarLoop]: 1615 mSDtfsCounter, 775 mSDsluCounter, 134 mSDsCounter, 0 mSdLazyCounter, 2367 mSolverCounterSat, 377 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 775 SdHoareTripleChecker+Valid, 1749 SdHoareTripleChecker+Invalid, 2744 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 377 IncrementalHoareTripleChecker+Valid, 2367 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-12-13 11:47:56,014 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [775 Valid, 1749 Invalid, 2744 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [377 Valid, 2367 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2022-12-13 11:47:56,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251508 states. [2022-12-13 11:47:58,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251508 to 247565. [2022-12-13 11:47:58,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 247565 states, 247564 states have (on average 1.0413509233975862) internal successors, (257801), 247564 states have internal predecessors, (257801), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:47:58,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247565 states to 247565 states and 257801 transitions. [2022-12-13 11:47:58,923 INFO L78 Accepts]: Start accepts. Automaton has 247565 states and 257801 transitions. Word has length 753 [2022-12-13 11:47:58,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:47:58,924 INFO L495 AbstractCegarLoop]: Abstraction has 247565 states and 257801 transitions. [2022-12-13 11:47:58,924 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 137.0) internal successors, (411), 3 states have internal predecessors, (411), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:47:58,924 INFO L276 IsEmpty]: Start isEmpty. Operand 247565 states and 257801 transitions. [2022-12-13 11:47:58,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 786 [2022-12-13 11:47:58,948 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:47:58,948 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:47:58,948 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-12-13 11:47:58,948 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:47:58,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:47:58,949 INFO L85 PathProgramCache]: Analyzing trace with hash 1355487994, now seen corresponding path program 1 times [2022-12-13 11:47:58,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:47:58,949 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1385515173] [2022-12-13 11:47:58,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:47:58,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:47:59,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:47:59,671 INFO L134 CoverageAnalysis]: Checked inductivity of 2114 backedges. 1385 proven. 0 refuted. 0 times theorem prover too weak. 729 trivial. 0 not checked. [2022-12-13 11:47:59,671 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:47:59,671 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1385515173] [2022-12-13 11:47:59,671 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1385515173] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:47:59,671 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:47:59,671 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 11:47:59,671 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [804921213] [2022-12-13 11:47:59,671 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:47:59,672 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 11:47:59,672 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:47:59,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 11:47:59,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 11:47:59,672 INFO L87 Difference]: Start difference. First operand 247565 states and 257801 transitions. Second operand has 4 states, 4 states have (on average 97.5) internal successors, (390), 4 states have internal predecessors, (390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:48:06,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:48:06,871 INFO L93 Difference]: Finished difference Result 577945 states and 601969 transitions. [2022-12-13 11:48:06,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 11:48:06,872 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 97.5) internal successors, (390), 4 states have internal predecessors, (390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 785 [2022-12-13 11:48:06,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:48:07,191 INFO L225 Difference]: With dead ends: 577945 [2022-12-13 11:48:07,191 INFO L226 Difference]: Without dead ends: 331169 [2022-12-13 11:48:07,244 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 11:48:07,245 INFO L413 NwaCegarLoop]: 663 mSDtfsCounter, 1704 mSDsluCounter, 256 mSDsCounter, 0 mSdLazyCounter, 6196 mSolverCounterSat, 940 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1704 SdHoareTripleChecker+Valid, 919 SdHoareTripleChecker+Invalid, 7136 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 940 IncrementalHoareTripleChecker+Valid, 6196 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.9s IncrementalHoareTripleChecker+Time [2022-12-13 11:48:07,245 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1704 Valid, 919 Invalid, 7136 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [940 Valid, 6196 Invalid, 0 Unknown, 0 Unchecked, 5.9s Time] [2022-12-13 11:48:07,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 331169 states. [2022-12-13 11:48:09,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 331169 to 271190. [2022-12-13 11:48:09,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 271190 states, 271189 states have (on average 1.0393268163531706) internal successors, (281854), 271189 states have internal predecessors, (281854), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:48:10,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271190 states to 271190 states and 281854 transitions. [2022-12-13 11:48:10,389 INFO L78 Accepts]: Start accepts. Automaton has 271190 states and 281854 transitions. Word has length 785 [2022-12-13 11:48:10,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:48:10,389 INFO L495 AbstractCegarLoop]: Abstraction has 271190 states and 281854 transitions. [2022-12-13 11:48:10,389 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 97.5) internal successors, (390), 4 states have internal predecessors, (390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:48:10,390 INFO L276 IsEmpty]: Start isEmpty. Operand 271190 states and 281854 transitions. [2022-12-13 11:48:10,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 806 [2022-12-13 11:48:10,428 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:48:10,429 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 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, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:48:10,429 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-12-13 11:48:10,429 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:48:10,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:48:10,430 INFO L85 PathProgramCache]: Analyzing trace with hash -475774516, now seen corresponding path program 1 times [2022-12-13 11:48:10,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:48:10,430 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1739933013] [2022-12-13 11:48:10,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:48:10,430 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:48:10,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:48:11,065 INFO L134 CoverageAnalysis]: Checked inductivity of 2477 backedges. 1703 proven. 0 refuted. 0 times theorem prover too weak. 774 trivial. 0 not checked. [2022-12-13 11:48:11,066 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:48:11,066 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1739933013] [2022-12-13 11:48:11,066 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1739933013] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:48:11,066 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:48:11,066 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 11:48:11,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2132329818] [2022-12-13 11:48:11,066 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:48:11,066 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 11:48:11,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:48:11,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 11:48:11,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 11:48:11,067 INFO L87 Difference]: Start difference. First operand 271190 states and 281854 transitions. Second operand has 3 states, 3 states have (on average 127.0) internal successors, (381), 3 states have internal predecessors, (381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:48:15,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:48:15,002 INFO L93 Difference]: Finished difference Result 538452 states and 559625 transitions. [2022-12-13 11:48:15,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 11:48:15,003 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 127.0) internal successors, (381), 3 states have internal predecessors, (381), 0 states have call successors, (0), 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 805 [2022-12-13 11:48:15,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:48:15,303 INFO L225 Difference]: With dead ends: 538452 [2022-12-13 11:48:15,303 INFO L226 Difference]: Without dead ends: 266473 [2022-12-13 11:48:15,396 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 11:48:15,396 INFO L413 NwaCegarLoop]: 1594 mSDtfsCounter, 760 mSDsluCounter, 121 mSDsCounter, 0 mSdLazyCounter, 2371 mSolverCounterSat, 257 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 760 SdHoareTripleChecker+Valid, 1715 SdHoareTripleChecker+Invalid, 2628 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 257 IncrementalHoareTripleChecker+Valid, 2371 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-12-13 11:48:15,397 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [760 Valid, 1715 Invalid, 2628 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [257 Valid, 2371 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2022-12-13 11:48:15,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266473 states. [2022-12-13 11:48:17,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266473 to 255415. [2022-12-13 11:48:17,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 255415 states, 255414 states have (on average 1.0331109492823416) internal successors, (263871), 255414 states have internal predecessors, (263871), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:48:18,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255415 states to 255415 states and 263871 transitions. [2022-12-13 11:48:18,145 INFO L78 Accepts]: Start accepts. Automaton has 255415 states and 263871 transitions. Word has length 805 [2022-12-13 11:48:18,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:48:18,145 INFO L495 AbstractCegarLoop]: Abstraction has 255415 states and 263871 transitions. [2022-12-13 11:48:18,145 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 127.0) internal successors, (381), 3 states have internal predecessors, (381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:48:18,145 INFO L276 IsEmpty]: Start isEmpty. Operand 255415 states and 263871 transitions. [2022-12-13 11:48:18,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 829 [2022-12-13 11:48:18,170 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:48:18,171 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:48:18,171 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-12-13 11:48:18,171 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:48:18,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:48:18,171 INFO L85 PathProgramCache]: Analyzing trace with hash 1576282508, now seen corresponding path program 1 times [2022-12-13 11:48:18,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:48:18,171 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1706997699] [2022-12-13 11:48:18,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:48:18,172 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:48:18,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:48:19,302 INFO L134 CoverageAnalysis]: Checked inductivity of 1914 backedges. 1141 proven. 0 refuted. 0 times theorem prover too weak. 773 trivial. 0 not checked. [2022-12-13 11:48:19,302 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:48:19,302 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1706997699] [2022-12-13 11:48:19,302 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1706997699] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:48:19,302 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:48:19,302 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 11:48:19,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1892699054] [2022-12-13 11:48:19,303 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:48:19,303 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 11:48:19,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:48:19,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 11:48:19,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-13 11:48:19,304 INFO L87 Difference]: Start difference. First operand 255415 states and 263871 transitions. Second operand has 4 states, 4 states have (on average 126.0) internal successors, (504), 4 states have internal predecessors, (504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:48:27,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:48:27,664 INFO L93 Difference]: Finished difference Result 592065 states and 612070 transitions. [2022-12-13 11:48:27,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 11:48:27,665 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 126.0) internal successors, (504), 4 states have internal predecessors, (504), 0 states have call successors, (0), 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 828 [2022-12-13 11:48:27,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:48:28,004 INFO L225 Difference]: With dead ends: 592065 [2022-12-13 11:48:28,004 INFO L226 Difference]: Without dead ends: 342163 [2022-12-13 11:48:28,064 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-13 11:48:28,064 INFO L413 NwaCegarLoop]: 271 mSDtfsCounter, 1670 mSDsluCounter, 162 mSDsCounter, 0 mSdLazyCounter, 5161 mSolverCounterSat, 1206 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1670 SdHoareTripleChecker+Valid, 433 SdHoareTripleChecker+Invalid, 6367 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1206 IncrementalHoareTripleChecker+Valid, 5161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.8s IncrementalHoareTripleChecker+Time [2022-12-13 11:48:28,064 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1670 Valid, 433 Invalid, 6367 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1206 Valid, 5161 Invalid, 0 Unknown, 0 Unchecked, 6.8s Time] [2022-12-13 11:48:28,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 342163 states. [2022-12-13 11:48:30,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 342163 to 329441. [2022-12-13 11:48:31,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 329441 states, 329440 states have (on average 1.0328223652258377) internal successors, (340253), 329440 states have internal predecessors, (340253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:48:31,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 329441 states to 329441 states and 340253 transitions. [2022-12-13 11:48:31,584 INFO L78 Accepts]: Start accepts. Automaton has 329441 states and 340253 transitions. Word has length 828 [2022-12-13 11:48:31,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:48:31,585 INFO L495 AbstractCegarLoop]: Abstraction has 329441 states and 340253 transitions. [2022-12-13 11:48:31,585 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 126.0) internal successors, (504), 4 states have internal predecessors, (504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:48:31,585 INFO L276 IsEmpty]: Start isEmpty. Operand 329441 states and 340253 transitions. [2022-12-13 11:48:31,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 877 [2022-12-13 11:48:31,626 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:48:31,626 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 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, 6, 6, 6, 6, 5, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:48:31,626 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-12-13 11:48:31,627 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:48:31,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:48:31,627 INFO L85 PathProgramCache]: Analyzing trace with hash -1133016140, now seen corresponding path program 1 times [2022-12-13 11:48:31,627 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:48:31,628 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [445204036] [2022-12-13 11:48:31,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:48:31,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:48:31,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:48:32,684 INFO L134 CoverageAnalysis]: Checked inductivity of 2678 backedges. 1859 proven. 0 refuted. 0 times theorem prover too weak. 819 trivial. 0 not checked. [2022-12-13 11:48:32,685 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:48:32,685 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [445204036] [2022-12-13 11:48:32,685 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [445204036] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:48:32,685 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:48:32,685 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 11:48:32,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [940459827] [2022-12-13 11:48:32,685 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:48:32,686 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 11:48:32,686 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:48:32,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 11:48:32,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 11:48:32,687 INFO L87 Difference]: Start difference. First operand 329441 states and 340253 transitions. Second operand has 3 states, 3 states have (on average 142.33333333333334) internal successors, (427), 3 states have internal predecessors, (427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:48:37,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:48:37,589 INFO L93 Difference]: Finished difference Result 644731 states and 666321 transitions. [2022-12-13 11:48:37,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 11:48:37,589 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 142.33333333333334) internal successors, (427), 3 states have internal predecessors, (427), 0 states have call successors, (0), 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 876 [2022-12-13 11:48:37,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:48:37,968 INFO L225 Difference]: With dead ends: 644731 [2022-12-13 11:48:37,968 INFO L226 Difference]: Without dead ends: 333399 [2022-12-13 11:48:38,071 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 11:48:38,072 INFO L413 NwaCegarLoop]: 1648 mSDtfsCounter, 701 mSDsluCounter, 113 mSDsCounter, 0 mSdLazyCounter, 2471 mSolverCounterSat, 96 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 701 SdHoareTripleChecker+Valid, 1761 SdHoareTripleChecker+Invalid, 2567 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 96 IncrementalHoareTripleChecker+Valid, 2471 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2022-12-13 11:48:38,072 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [701 Valid, 1761 Invalid, 2567 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [96 Valid, 2471 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2022-12-13 11:48:38,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 333399 states. [2022-12-13 11:48:41,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 333399 to 333376. [2022-12-13 11:48:41,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 333376 states, 333375 states have (on average 1.0323269591301087) internal successors, (344152), 333375 states have internal predecessors, (344152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:48:41,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 333376 states to 333376 states and 344152 transitions. [2022-12-13 11:48:41,570 INFO L78 Accepts]: Start accepts. Automaton has 333376 states and 344152 transitions. Word has length 876 [2022-12-13 11:48:41,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:48:41,571 INFO L495 AbstractCegarLoop]: Abstraction has 333376 states and 344152 transitions. [2022-12-13 11:48:41,571 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 142.33333333333334) internal successors, (427), 3 states have internal predecessors, (427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:48:41,571 INFO L276 IsEmpty]: Start isEmpty. Operand 333376 states and 344152 transitions. [2022-12-13 11:48:41,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 901 [2022-12-13 11:48:41,769 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:48:41,770 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:48:41,770 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-12-13 11:48:41,770 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:48:41,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:48:41,770 INFO L85 PathProgramCache]: Analyzing trace with hash -1820764337, now seen corresponding path program 1 times [2022-12-13 11:48:41,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:48:41,770 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1390831754] [2022-12-13 11:48:41,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:48:41,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:48:41,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:48:42,512 INFO L134 CoverageAnalysis]: Checked inductivity of 3156 backedges. 2104 proven. 0 refuted. 0 times theorem prover too weak. 1052 trivial. 0 not checked. [2022-12-13 11:48:42,512 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:48:42,512 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1390831754] [2022-12-13 11:48:42,512 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1390831754] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:48:42,512 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:48:42,512 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 11:48:42,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1086835723] [2022-12-13 11:48:42,513 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:48:42,513 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 11:48:42,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:48:42,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 11:48:42,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 11:48:42,514 INFO L87 Difference]: Start difference. First operand 333376 states and 344152 transitions. Second operand has 3 states, 3 states have (on average 127.33333333333333) internal successors, (382), 3 states have internal predecessors, (382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:48:47,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:48:47,180 INFO L93 Difference]: Finished difference Result 654946 states and 676471 transitions. [2022-12-13 11:48:47,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 11:48:47,181 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 127.33333333333333) internal successors, (382), 3 states have internal predecessors, (382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 900 [2022-12-13 11:48:47,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:48:47,564 INFO L225 Difference]: With dead ends: 654946 [2022-12-13 11:48:47,564 INFO L226 Difference]: Without dead ends: 339679 [2022-12-13 11:48:47,681 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 11:48:47,682 INFO L413 NwaCegarLoop]: 1646 mSDtfsCounter, 720 mSDsluCounter, 125 mSDsCounter, 0 mSdLazyCounter, 2350 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 720 SdHoareTripleChecker+Valid, 1771 SdHoareTripleChecker+Invalid, 2416 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 2350 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2022-12-13 11:48:47,682 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [720 Valid, 1771 Invalid, 2416 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 2350 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2022-12-13 11:48:47,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 339679 states. [2022-12-13 11:48:50,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 339679 to 339672. [2022-12-13 11:48:50,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 339672 states, 339671 states have (on average 1.0317395361982624) internal successors, (350452), 339671 states have internal predecessors, (350452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:48:51,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 339672 states to 339672 states and 350452 transitions. [2022-12-13 11:48:51,400 INFO L78 Accepts]: Start accepts. Automaton has 339672 states and 350452 transitions. Word has length 900 [2022-12-13 11:48:51,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:48:51,400 INFO L495 AbstractCegarLoop]: Abstraction has 339672 states and 350452 transitions. [2022-12-13 11:48:51,401 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 127.33333333333333) internal successors, (382), 3 states have internal predecessors, (382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:48:51,401 INFO L276 IsEmpty]: Start isEmpty. Operand 339672 states and 350452 transitions. [2022-12-13 11:48:51,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 944 [2022-12-13 11:48:51,474 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:48:51,474 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 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, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:48:51,474 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-12-13 11:48:51,474 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:48:51,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:48:51,475 INFO L85 PathProgramCache]: Analyzing trace with hash 1481472803, now seen corresponding path program 1 times [2022-12-13 11:48:51,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:48:51,475 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1050559469] [2022-12-13 11:48:51,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:48:51,475 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:48:51,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:48:51,931 INFO L134 CoverageAnalysis]: Checked inductivity of 3042 backedges. 1668 proven. 0 refuted. 0 times theorem prover too weak. 1374 trivial. 0 not checked. [2022-12-13 11:48:51,931 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:48:51,931 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1050559469] [2022-12-13 11:48:51,932 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1050559469] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:48:51,932 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:48:51,932 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 11:48:51,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1305081436] [2022-12-13 11:48:51,932 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:48:51,933 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 11:48:51,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:48:51,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 11:48:51,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 11:48:51,933 INFO L87 Difference]: Start difference. First operand 339672 states and 350452 transitions. Second operand has 3 states, 3 states have (on average 102.0) internal successors, (306), 2 states have internal predecessors, (306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:48:55,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:48:55,077 INFO L93 Difference]: Finished difference Result 654912 states and 676010 transitions. [2022-12-13 11:48:55,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 11:48:55,077 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 102.0) internal successors, (306), 2 states have internal predecessors, (306), 0 states have call successors, (0), 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 943 [2022-12-13 11:48:55,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:48:55,550 INFO L225 Difference]: With dead ends: 654912 [2022-12-13 11:48:55,550 INFO L226 Difference]: Without dead ends: 333349 [2022-12-13 11:48:55,642 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 11:48:55,642 INFO L413 NwaCegarLoop]: 256 mSDtfsCounter, 1567 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1413 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1567 SdHoareTripleChecker+Valid, 256 SdHoareTripleChecker+Invalid, 1423 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 1413 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-12-13 11:48:55,642 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1567 Valid, 256 Invalid, 1423 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 1413 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-12-13 11:48:55,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 333349 states. [2022-12-13 11:48:58,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 333349 to 333346. [2022-12-13 11:48:58,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 333346 states, 333345 states have (on average 1.0314538991135311) internal successors, (343830), 333345 states have internal predecessors, (343830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:48:59,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 333346 states to 333346 states and 343830 transitions. [2022-12-13 11:48:59,476 INFO L78 Accepts]: Start accepts. Automaton has 333346 states and 343830 transitions. Word has length 943 [2022-12-13 11:48:59,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:48:59,476 INFO L495 AbstractCegarLoop]: Abstraction has 333346 states and 343830 transitions. [2022-12-13 11:48:59,476 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 102.0) internal successors, (306), 2 states have internal predecessors, (306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:48:59,476 INFO L276 IsEmpty]: Start isEmpty. Operand 333346 states and 343830 transitions. [2022-12-13 11:48:59,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 953 [2022-12-13 11:48:59,523 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:48:59,523 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 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, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 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, 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 11:48:59,523 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-12-13 11:48:59,523 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:48:59,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:48:59,524 INFO L85 PathProgramCache]: Analyzing trace with hash -1556217618, now seen corresponding path program 1 times [2022-12-13 11:48:59,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:48:59,524 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2107790958] [2022-12-13 11:48:59,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:48:59,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:48:59,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:49:00,112 INFO L134 CoverageAnalysis]: Checked inductivity of 2640 backedges. 1374 proven. 0 refuted. 0 times theorem prover too weak. 1266 trivial. 0 not checked. [2022-12-13 11:49:00,112 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:49:00,112 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2107790958] [2022-12-13 11:49:00,112 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2107790958] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:49:00,112 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:49:00,113 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 11:49:00,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [743404776] [2022-12-13 11:49:00,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:49:00,114 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 11:49:00,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:49:00,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 11:49:00,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 11:49:00,115 INFO L87 Difference]: Start difference. First operand 333346 states and 343830 transitions. Second operand has 3 states, 3 states have (on average 149.66666666666666) internal successors, (449), 3 states have internal predecessors, (449), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:49:05,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:49:05,322 INFO L93 Difference]: Finished difference Result 727320 states and 750956 transitions. [2022-12-13 11:49:05,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 11:49:05,323 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 149.66666666666666) internal successors, (449), 3 states have internal predecessors, (449), 0 states have call successors, (0), 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 952 [2022-12-13 11:49:05,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:49:05,838 INFO L225 Difference]: With dead ends: 727320 [2022-12-13 11:49:05,838 INFO L226 Difference]: Without dead ends: 412083 [2022-12-13 11:49:05,977 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 11:49:05,977 INFO L413 NwaCegarLoop]: 658 mSDtfsCounter, 897 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 2395 mSolverCounterSat, 687 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 897 SdHoareTripleChecker+Valid, 741 SdHoareTripleChecker+Invalid, 3082 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 687 IncrementalHoareTripleChecker+Valid, 2395 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2022-12-13 11:49:05,978 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [897 Valid, 741 Invalid, 3082 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [687 Valid, 2395 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2022-12-13 11:49:06,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 412083 states. [2022-12-13 11:49:10,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 412083 to 402626. [2022-12-13 11:49:10,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 402626 states, 402625 states have (on average 1.0281452964917728) internal successors, (413957), 402625 states have internal predecessors, (413957), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:49:10,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 402626 states to 402626 states and 413957 transitions. [2022-12-13 11:49:10,968 INFO L78 Accepts]: Start accepts. Automaton has 402626 states and 413957 transitions. Word has length 952 [2022-12-13 11:49:10,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:49:10,968 INFO L495 AbstractCegarLoop]: Abstraction has 402626 states and 413957 transitions. [2022-12-13 11:49:10,969 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 149.66666666666666) internal successors, (449), 3 states have internal predecessors, (449), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:49:10,969 INFO L276 IsEmpty]: Start isEmpty. Operand 402626 states and 413957 transitions. [2022-12-13 11:49:11,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1148 [2022-12-13 11:49:11,112 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:49:11,112 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 5, 5, 5, 5, 5, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-12-13 11:49:11,112 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-12-13 11:49:11,112 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:49:11,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:49:11,113 INFO L85 PathProgramCache]: Analyzing trace with hash -1261143565, now seen corresponding path program 1 times [2022-12-13 11:49:11,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:49:11,113 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [675646913] [2022-12-13 11:49:11,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:49:11,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:49:11,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:49:11,747 INFO L134 CoverageAnalysis]: Checked inductivity of 2379 backedges. 1693 proven. 0 refuted. 0 times theorem prover too weak. 686 trivial. 0 not checked. [2022-12-13 11:49:11,748 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:49:11,748 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [675646913] [2022-12-13 11:49:11,748 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [675646913] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:49:11,748 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:49:11,748 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 11:49:11,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [243274442] [2022-12-13 11:49:11,749 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:49:11,750 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 11:49:11,750 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:49:11,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 11:49:11,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 11:49:11,751 INFO L87 Difference]: Start difference. First operand 402626 states and 413957 transitions. Second operand has 3 states, 3 states have (on average 253.33333333333334) internal successors, (760), 3 states have internal predecessors, (760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:49:17,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:49:17,558 INFO L93 Difference]: Finished difference Result 806795 states and 829907 transitions. [2022-12-13 11:49:17,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 11:49:17,558 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 253.33333333333334) internal successors, (760), 3 states have internal predecessors, (760), 0 states have call successors, (0), 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 1147 [2022-12-13 11:49:17,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:49:18,069 INFO L225 Difference]: With dead ends: 806795 [2022-12-13 11:49:18,069 INFO L226 Difference]: Without dead ends: 422278 [2022-12-13 11:49:18,343 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 11:49:18,344 INFO L413 NwaCegarLoop]: 444 mSDtfsCounter, 745 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 2232 mSolverCounterSat, 909 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 745 SdHoareTripleChecker+Valid, 492 SdHoareTripleChecker+Invalid, 3141 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 909 IncrementalHoareTripleChecker+Valid, 2232 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2022-12-13 11:49:18,344 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [745 Valid, 492 Invalid, 3141 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [909 Valid, 2232 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2022-12-13 11:49:18,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 422278 states. [2022-12-13 11:49:22,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 422278 to 375021. [2022-12-13 11:49:22,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 375021 states, 375020 states have (on average 1.0271238867260413) internal successors, (385192), 375020 states have internal predecessors, (385192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:49:22,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 375021 states to 375021 states and 385192 transitions. [2022-12-13 11:49:22,714 INFO L78 Accepts]: Start accepts. Automaton has 375021 states and 385192 transitions. Word has length 1147 [2022-12-13 11:49:22,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:49:22,715 INFO L495 AbstractCegarLoop]: Abstraction has 375021 states and 385192 transitions. [2022-12-13 11:49:22,715 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 253.33333333333334) internal successors, (760), 3 states have internal predecessors, (760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:49:22,715 INFO L276 IsEmpty]: Start isEmpty. Operand 375021 states and 385192 transitions. [2022-12-13 11:49:22,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1188 [2022-12-13 11:49:22,801 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:49:22,802 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:49:22,802 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-12-13 11:49:22,802 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:49:22,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:49:22,802 INFO L85 PathProgramCache]: Analyzing trace with hash -2064929892, now seen corresponding path program 1 times [2022-12-13 11:49:22,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:49:22,803 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [660538170] [2022-12-13 11:49:22,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:49:22,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:49:22,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:49:24,189 INFO L134 CoverageAnalysis]: Checked inductivity of 1408 backedges. 940 proven. 0 refuted. 0 times theorem prover too weak. 468 trivial. 0 not checked. [2022-12-13 11:49:24,189 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:49:24,189 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [660538170] [2022-12-13 11:49:24,190 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [660538170] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:49:24,190 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:49:24,190 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 11:49:24,190 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [571170824] [2022-12-13 11:49:24,190 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:49:24,191 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 11:49:24,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:49:24,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 11:49:24,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 11:49:24,193 INFO L87 Difference]: Start difference. First operand 375021 states and 385192 transitions. Second operand has 3 states, 3 states have (on average 312.0) internal successors, (936), 3 states have internal predecessors, (936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:49:30,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:49:30,374 INFO L93 Difference]: Finished difference Result 791829 states and 813695 transitions. [2022-12-13 11:49:30,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 11:49:30,375 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 312.0) internal successors, (936), 3 states have internal predecessors, (936), 0 states have call successors, (0), 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 1187 [2022-12-13 11:49:30,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:49:30,886 INFO L225 Difference]: With dead ends: 791829 [2022-12-13 11:49:30,886 INFO L226 Difference]: Without dead ends: 434917 [2022-12-13 11:49:31,000 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 11:49:31,000 INFO L413 NwaCegarLoop]: 1387 mSDtfsCounter, 767 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 2700 mSolverCounterSat, 465 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 767 SdHoareTripleChecker+Valid, 1465 SdHoareTripleChecker+Invalid, 3165 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 465 IncrementalHoareTripleChecker+Valid, 2700 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2022-12-13 11:49:31,000 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [767 Valid, 1465 Invalid, 3165 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [465 Valid, 2700 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2022-12-13 11:49:31,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 434917 states. [2022-12-13 11:49:34,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 434917 to 420676. [2022-12-13 11:49:35,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 420676 states, 420675 states have (on average 1.0272086527604445) internal successors, (432121), 420675 states have internal predecessors, (432121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:49:35,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 420676 states to 420676 states and 432121 transitions. [2022-12-13 11:49:35,761 INFO L78 Accepts]: Start accepts. Automaton has 420676 states and 432121 transitions. Word has length 1187 [2022-12-13 11:49:35,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:49:35,762 INFO L495 AbstractCegarLoop]: Abstraction has 420676 states and 432121 transitions. [2022-12-13 11:49:35,762 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 312.0) internal successors, (936), 3 states have internal predecessors, (936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:49:35,762 INFO L276 IsEmpty]: Start isEmpty. Operand 420676 states and 432121 transitions. [2022-12-13 11:49:35,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1234 [2022-12-13 11:49:35,858 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:49:35,858 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:49:35,858 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-12-13 11:49:35,859 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:49:35,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:49:35,859 INFO L85 PathProgramCache]: Analyzing trace with hash -29915873, now seen corresponding path program 1 times [2022-12-13 11:49:35,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:49:35,859 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1966185112] [2022-12-13 11:49:35,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:49:35,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:49:35,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:49:36,903 INFO L134 CoverageAnalysis]: Checked inductivity of 1448 backedges. 679 proven. 0 refuted. 0 times theorem prover too weak. 769 trivial. 0 not checked. [2022-12-13 11:49:36,903 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:49:36,903 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1966185112] [2022-12-13 11:49:36,903 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1966185112] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:49:36,903 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:49:36,903 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 11:49:36,904 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [605152882] [2022-12-13 11:49:36,904 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:49:36,904 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 11:49:36,904 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:49:36,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 11:49:36,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 11:49:36,905 INFO L87 Difference]: Start difference. First operand 420676 states and 432121 transitions. Second operand has 3 states, 3 states have (on average 303.3333333333333) internal successors, (910), 3 states have internal predecessors, (910), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:49:43,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:49:43,367 INFO L93 Difference]: Finished difference Result 849998 states and 873371 transitions. [2022-12-13 11:49:43,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 11:49:43,368 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 303.3333333333333) internal successors, (910), 3 states have internal predecessors, (910), 0 states have call successors, (0), 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 1233 [2022-12-13 11:49:43,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:49:43,885 INFO L225 Difference]: With dead ends: 849998 [2022-12-13 11:49:43,885 INFO L226 Difference]: Without dead ends: 447431 [2022-12-13 11:49:44,013 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 11:49:44,013 INFO L413 NwaCegarLoop]: 441 mSDtfsCounter, 300 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 2439 mSolverCounterSat, 601 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 300 SdHoareTripleChecker+Valid, 511 SdHoareTripleChecker+Invalid, 3040 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 601 IncrementalHoareTripleChecker+Valid, 2439 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2022-12-13 11:49:44,014 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [300 Valid, 511 Invalid, 3040 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [601 Valid, 2439 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2022-12-13 11:49:44,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 447431 states. [2022-12-13 11:49:47,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 447431 to 378943. [2022-12-13 11:49:47,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 378943 states, 378942 states have (on average 1.0258218935879369) internal successors, (388727), 378942 states have internal predecessors, (388727), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:49:48,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 378943 states to 378943 states and 388727 transitions. [2022-12-13 11:49:48,463 INFO L78 Accepts]: Start accepts. Automaton has 378943 states and 388727 transitions. Word has length 1233 [2022-12-13 11:49:48,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:49:48,464 INFO L495 AbstractCegarLoop]: Abstraction has 378943 states and 388727 transitions. [2022-12-13 11:49:48,464 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 303.3333333333333) internal successors, (910), 3 states have internal predecessors, (910), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:49:48,464 INFO L276 IsEmpty]: Start isEmpty. Operand 378943 states and 388727 transitions. [2022-12-13 11:49:48,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1259 [2022-12-13 11:49:48,553 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:49:48,553 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:49:48,553 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-12-13 11:49:48,553 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:49:48,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:49:48,554 INFO L85 PathProgramCache]: Analyzing trace with hash 1709494148, now seen corresponding path program 1 times [2022-12-13 11:49:48,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:49:48,554 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [776326512] [2022-12-13 11:49:48,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:49:48,555 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:49:48,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:49:49,644 INFO L134 CoverageAnalysis]: Checked inductivity of 1595 backedges. 1082 proven. 0 refuted. 0 times theorem prover too weak. 513 trivial. 0 not checked. [2022-12-13 11:49:49,644 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:49:49,644 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [776326512] [2022-12-13 11:49:49,644 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [776326512] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:49:49,644 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:49:49,645 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 11:49:49,645 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [787803790] [2022-12-13 11:49:49,645 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:49:49,646 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 11:49:49,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:49:49,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 11:49:49,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 11:49:49,647 INFO L87 Difference]: Start difference. First operand 378943 states and 388727 transitions. Second operand has 3 states, 3 states have (on average 327.3333333333333) internal successors, (982), 3 states have internal predecessors, (982), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:49:54,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:49:54,379 INFO L93 Difference]: Finished difference Result 753179 states and 772981 transitions. [2022-12-13 11:49:54,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 11:49:54,379 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 327.3333333333333) internal successors, (982), 3 states have internal predecessors, (982), 0 states have call successors, (0), 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 1258 [2022-12-13 11:49:54,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:49:54,791 INFO L225 Difference]: With dead ends: 753179 [2022-12-13 11:49:54,791 INFO L226 Difference]: Without dead ends: 390771 [2022-12-13 11:49:55,060 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 11:49:55,060 INFO L413 NwaCegarLoop]: 1602 mSDtfsCounter, 642 mSDsluCounter, 141 mSDsCounter, 0 mSdLazyCounter, 2450 mSolverCounterSat, 184 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 642 SdHoareTripleChecker+Valid, 1743 SdHoareTripleChecker+Invalid, 2634 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 184 IncrementalHoareTripleChecker+Valid, 2450 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2022-12-13 11:49:55,061 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [642 Valid, 1743 Invalid, 2634 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [184 Valid, 2450 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2022-12-13 11:49:55,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 390771 states. [2022-12-13 11:49:58,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 390771 to 378156. [2022-12-13 11:49:58,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 378156 states, 378155 states have (on average 1.024886620565641) internal successors, (387566), 378155 states have internal predecessors, (387566), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:49:59,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 378156 states to 378156 states and 387566 transitions. [2022-12-13 11:49:59,033 INFO L78 Accepts]: Start accepts. Automaton has 378156 states and 387566 transitions. Word has length 1258 [2022-12-13 11:49:59,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:49:59,034 INFO L495 AbstractCegarLoop]: Abstraction has 378156 states and 387566 transitions. [2022-12-13 11:49:59,034 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 327.3333333333333) internal successors, (982), 3 states have internal predecessors, (982), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:49:59,034 INFO L276 IsEmpty]: Start isEmpty. Operand 378156 states and 387566 transitions. [2022-12-13 11:49:59,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1340 [2022-12-13 11:49:59,140 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:49:59,141 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:49:59,141 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-12-13 11:49:59,141 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:49:59,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:49:59,142 INFO L85 PathProgramCache]: Analyzing trace with hash -1245420943, now seen corresponding path program 1 times [2022-12-13 11:49:59,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:49:59,142 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1408824112] [2022-12-13 11:49:59,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:49:59,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:49:59,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:50:01,915 INFO L134 CoverageAnalysis]: Checked inductivity of 1111 backedges. 1088 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2022-12-13 11:50:01,916 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:50:01,916 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1408824112] [2022-12-13 11:50:01,916 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1408824112] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:50:01,916 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:50:01,916 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 11:50:01,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [618269216] [2022-12-13 11:50:01,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:50:01,918 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 11:50:01,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:50:01,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 11:50:01,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-13 11:50:01,920 INFO L87 Difference]: Start difference. First operand 378156 states and 387566 transitions. Second operand has 4 states, 4 states have (on average 329.25) internal successors, (1317), 4 states have internal predecessors, (1317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:50:08,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:50:08,716 INFO L93 Difference]: Finished difference Result 801271 states and 821409 transitions. [2022-12-13 11:50:08,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 11:50:08,716 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 329.25) internal successors, (1317), 4 states have internal predecessors, (1317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 1339 [2022-12-13 11:50:08,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:50:09,228 INFO L225 Difference]: With dead ends: 801271 [2022-12-13 11:50:09,228 INFO L226 Difference]: Without dead ends: 438863 [2022-12-13 11:50:09,359 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-13 11:50:09,359 INFO L413 NwaCegarLoop]: 355 mSDtfsCounter, 1526 mSDsluCounter, 150 mSDsCounter, 0 mSdLazyCounter, 4821 mSolverCounterSat, 711 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1526 SdHoareTripleChecker+Valid, 505 SdHoareTripleChecker+Invalid, 5532 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 711 IncrementalHoareTripleChecker+Valid, 4821 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2022-12-13 11:50:09,360 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1526 Valid, 505 Invalid, 5532 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [711 Valid, 4821 Invalid, 0 Unknown, 0 Unchecked, 4.8s Time] [2022-12-13 11:50:09,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 438863 states. [2022-12-13 11:50:13,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 438863 to 417533. [2022-12-13 11:50:13,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 417533 states, 417532 states have (on average 1.0247621739172088) internal successors, (427871), 417532 states have internal predecessors, (427871), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:50:14,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 417533 states to 417533 states and 427871 transitions. [2022-12-13 11:50:14,115 INFO L78 Accepts]: Start accepts. Automaton has 417533 states and 427871 transitions. Word has length 1339 [2022-12-13 11:50:14,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:50:14,115 INFO L495 AbstractCegarLoop]: Abstraction has 417533 states and 427871 transitions. [2022-12-13 11:50:14,115 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 329.25) internal successors, (1317), 4 states have internal predecessors, (1317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:50:14,116 INFO L276 IsEmpty]: Start isEmpty. Operand 417533 states and 427871 transitions. [2022-12-13 11:50:14,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1421 [2022-12-13 11:50:14,487 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:50:14,487 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:50:14,487 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2022-12-13 11:50:14,487 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:50:14,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:50:14,488 INFO L85 PathProgramCache]: Analyzing trace with hash 199959745, now seen corresponding path program 1 times [2022-12-13 11:50:14,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:50:14,488 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1434367973] [2022-12-13 11:50:14,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:50:14,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:50:14,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:50:16,016 INFO L134 CoverageAnalysis]: Checked inductivity of 2662 backedges. 1797 proven. 0 refuted. 0 times theorem prover too weak. 865 trivial. 0 not checked. [2022-12-13 11:50:16,016 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:50:16,017 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1434367973] [2022-12-13 11:50:16,017 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1434367973] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:50:16,017 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:50:16,017 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 11:50:16,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [322436979] [2022-12-13 11:50:16,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:50:16,018 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 11:50:16,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:50:16,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 11:50:16,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-13 11:50:16,019 INFO L87 Difference]: Start difference. First operand 417533 states and 427871 transitions. Second operand has 4 states, 4 states have (on average 227.0) internal successors, (908), 4 states have internal predecessors, (908), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:50:23,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:50:23,488 INFO L93 Difference]: Finished difference Result 853976 states and 875335 transitions. [2022-12-13 11:50:23,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 11:50:23,488 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 227.0) internal successors, (908), 4 states have internal predecessors, (908), 0 states have call successors, (0), 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 1420 [2022-12-13 11:50:23,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:50:24,010 INFO L225 Difference]: With dead ends: 853976 [2022-12-13 11:50:24,010 INFO L226 Difference]: Without dead ends: 452978 [2022-12-13 11:50:24,128 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-13 11:50:24,129 INFO L413 NwaCegarLoop]: 453 mSDtfsCounter, 1675 mSDsluCounter, 205 mSDsCounter, 0 mSdLazyCounter, 5062 mSolverCounterSat, 679 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1675 SdHoareTripleChecker+Valid, 658 SdHoareTripleChecker+Invalid, 5741 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 679 IncrementalHoareTripleChecker+Valid, 5062 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time [2022-12-13 11:50:24,129 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1675 Valid, 658 Invalid, 5741 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [679 Valid, 5062 Invalid, 0 Unknown, 0 Unchecked, 5.2s Time] [2022-12-13 11:50:24,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 452978 states. [2022-12-13 11:50:28,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 452978 to 437222. [2022-12-13 11:50:28,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 437222 states, 437221 states have (on average 1.0237637258960572) internal successors, (447611), 437221 states have internal predecessors, (447611), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:50:29,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 437222 states to 437222 states and 447611 transitions. [2022-12-13 11:50:29,043 INFO L78 Accepts]: Start accepts. Automaton has 437222 states and 447611 transitions. Word has length 1420 [2022-12-13 11:50:29,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:50:29,043 INFO L495 AbstractCegarLoop]: Abstraction has 437222 states and 447611 transitions. [2022-12-13 11:50:29,044 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 227.0) internal successors, (908), 4 states have internal predecessors, (908), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:50:29,044 INFO L276 IsEmpty]: Start isEmpty. Operand 437222 states and 447611 transitions. [2022-12-13 11:50:29,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1451 [2022-12-13 11:50:29,172 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:50:29,172 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:50:29,172 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2022-12-13 11:50:29,172 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:50:29,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:50:29,173 INFO L85 PathProgramCache]: Analyzing trace with hash 1331909156, now seen corresponding path program 1 times [2022-12-13 11:50:29,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:50:29,173 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1788256338] [2022-12-13 11:50:29,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:50:29,173 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:50:29,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat