./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/pals_lcr.7.ufo.UNBOUNDED.pals+Problem12_label02.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a 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_2800347f-ccbe-4533-b880-e1d7a11779ed/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2800347f-ccbe-4533-b880-e1d7a11779ed/bin/uautomizer-Dbtcem3rbc/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2800347f-ccbe-4533-b880-e1d7a11779ed/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2800347f-ccbe-4533-b880-e1d7a11779ed/bin/uautomizer-Dbtcem3rbc/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/pals_lcr.7.ufo.UNBOUNDED.pals+Problem12_label02.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2800347f-ccbe-4533-b880-e1d7a11779ed/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2800347f-ccbe-4533-b880-e1d7a11779ed/bin/uautomizer-Dbtcem3rbc --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 d75a2391f4a22066ef2bb1ed925207911a0418d8f665bed417e6b9b74205fcd2 --- 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-5e519f3 [2022-11-02 20:19:48,145 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-02 20:19:48,148 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-02 20:19:48,201 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-02 20:19:48,202 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-02 20:19:48,203 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-02 20:19:48,205 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-02 20:19:48,208 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-02 20:19:48,212 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-02 20:19:48,213 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-02 20:19:48,214 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-02 20:19:48,216 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-02 20:19:48,216 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-02 20:19:48,218 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-02 20:19:48,219 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-02 20:19:48,221 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-02 20:19:48,222 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-02 20:19:48,223 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-02 20:19:48,225 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-02 20:19:48,233 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-02 20:19:48,239 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-02 20:19:48,247 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-02 20:19:48,251 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-02 20:19:48,253 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-02 20:19:48,262 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-02 20:19:48,262 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-02 20:19:48,262 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-02 20:19:48,264 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-02 20:19:48,264 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-02 20:19:48,265 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-02 20:19:48,266 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-02 20:19:48,267 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-02 20:19:48,268 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-02 20:19:48,269 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-02 20:19:48,270 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-02 20:19:48,270 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-02 20:19:48,276 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-02 20:19:48,277 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-02 20:19:48,277 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-02 20:19:48,278 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-02 20:19:48,279 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-02 20:19:48,281 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2800347f-ccbe-4533-b880-e1d7a11779ed/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-02 20:19:48,335 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-02 20:19:48,335 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-02 20:19:48,336 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-02 20:19:48,336 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-02 20:19:48,338 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-02 20:19:48,338 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-02 20:19:48,339 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-02 20:19:48,339 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-02 20:19:48,339 INFO L138 SettingsManager]: * Use SBE=true [2022-11-02 20:19:48,340 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-02 20:19:48,341 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-02 20:19:48,341 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-02 20:19:48,341 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-02 20:19:48,342 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-02 20:19:48,342 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-02 20:19:48,342 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-02 20:19:48,342 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-02 20:19:48,343 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-02 20:19:48,343 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-02 20:19:48,343 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-02 20:19:48,343 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-02 20:19:48,344 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-02 20:19:48,344 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-02 20:19:48,344 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-02 20:19:48,344 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:19:48,345 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-02 20:19:48,345 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-02 20:19:48,345 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-02 20:19:48,346 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-02 20:19:48,346 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-02 20:19:48,346 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-02 20:19:48,346 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-02 20:19:48,347 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-02 20:19:48,347 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2800347f-ccbe-4533-b880-e1d7a11779ed/bin/uautomizer-Dbtcem3rbc/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2800347f-ccbe-4533-b880-e1d7a11779ed/bin/uautomizer-Dbtcem3rbc Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d75a2391f4a22066ef2bb1ed925207911a0418d8f665bed417e6b9b74205fcd2 [2022-11-02 20:19:48,676 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-02 20:19:48,711 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-02 20:19:48,716 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-02 20:19:48,718 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-02 20:19:48,719 INFO L275 PluginConnector]: CDTParser initialized [2022-11-02 20:19:48,721 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2800347f-ccbe-4533-b880-e1d7a11779ed/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/combinations/pals_lcr.7.ufo.UNBOUNDED.pals+Problem12_label02.c [2022-11-02 20:19:48,794 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2800347f-ccbe-4533-b880-e1d7a11779ed/bin/uautomizer-Dbtcem3rbc/data/07c9c06f8/01385801e001443694f6a98e295e9a2c/FLAGc1f36fb3e [2022-11-02 20:19:49,837 INFO L306 CDTParser]: Found 1 translation units. [2022-11-02 20:19:49,837 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2800347f-ccbe-4533-b880-e1d7a11779ed/sv-benchmarks/c/combinations/pals_lcr.7.ufo.UNBOUNDED.pals+Problem12_label02.c [2022-11-02 20:19:49,876 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2800347f-ccbe-4533-b880-e1d7a11779ed/bin/uautomizer-Dbtcem3rbc/data/07c9c06f8/01385801e001443694f6a98e295e9a2c/FLAGc1f36fb3e [2022-11-02 20:19:50,230 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2800347f-ccbe-4533-b880-e1d7a11779ed/bin/uautomizer-Dbtcem3rbc/data/07c9c06f8/01385801e001443694f6a98e295e9a2c [2022-11-02 20:19:50,233 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-02 20:19:50,235 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-02 20:19:50,237 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-02 20:19:50,237 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-02 20:19:50,250 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-02 20:19:50,251 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:19:50" (1/1) ... [2022-11-02 20:19:50,252 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@accb674 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:19:50, skipping insertion in model container [2022-11-02 20:19:50,253 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:19:50" (1/1) ... [2022-11-02 20:19:50,263 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-02 20:19:50,403 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 20:19:50,882 WARN L230 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_2800347f-ccbe-4533-b880-e1d7a11779ed/sv-benchmarks/c/combinations/pals_lcr.7.ufo.UNBOUNDED.pals+Problem12_label02.c[20454,20467] [2022-11-02 20:19:50,951 WARN L230 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_2800347f-ccbe-4533-b880-e1d7a11779ed/sv-benchmarks/c/combinations/pals_lcr.7.ufo.UNBOUNDED.pals+Problem12_label02.c[27744,27757] [2022-11-02 20:19:52,010 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:19:52,024 INFO L203 MainTranslator]: Completed pre-run [2022-11-02 20:19:52,106 WARN L230 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_2800347f-ccbe-4533-b880-e1d7a11779ed/sv-benchmarks/c/combinations/pals_lcr.7.ufo.UNBOUNDED.pals+Problem12_label02.c[20454,20467] [2022-11-02 20:19:52,127 WARN L230 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_2800347f-ccbe-4533-b880-e1d7a11779ed/sv-benchmarks/c/combinations/pals_lcr.7.ufo.UNBOUNDED.pals+Problem12_label02.c[27744,27757] [2022-11-02 20:19:52,838 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:19:52,878 INFO L208 MainTranslator]: Completed translation [2022-11-02 20:19:52,879 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:19:52 WrapperNode [2022-11-02 20:19:52,879 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-02 20:19:52,881 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-02 20:19:52,881 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-02 20:19:52,882 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-02 20:19:52,891 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:19:52" (1/1) ... [2022-11-02 20:19:52,974 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:19:52" (1/1) ... [2022-11-02 20:19:53,345 INFO L138 Inliner]: procedures = 39, calls = 24, calls flagged for inlining = 19, calls inlined = 19, statements flattened = 5208 [2022-11-02 20:19:53,346 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-02 20:19:53,347 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-02 20:19:53,347 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-02 20:19:53,347 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-02 20:19:53,359 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:19:52" (1/1) ... [2022-11-02 20:19:53,359 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:19:52" (1/1) ... [2022-11-02 20:19:53,537 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:19:52" (1/1) ... [2022-11-02 20:19:53,537 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:19:52" (1/1) ... [2022-11-02 20:19:53,842 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:19:52" (1/1) ... [2022-11-02 20:19:53,891 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:19:52" (1/1) ... [2022-11-02 20:19:53,980 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:19:52" (1/1) ... [2022-11-02 20:19:53,999 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:19:52" (1/1) ... [2022-11-02 20:19:54,184 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-02 20:19:54,186 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-02 20:19:54,186 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-02 20:19:54,186 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-02 20:19:54,199 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:19:52" (1/1) ... [2022-11-02 20:19:54,213 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:19:54,233 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2800347f-ccbe-4533-b880-e1d7a11779ed/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:19:54,285 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2800347f-ccbe-4533-b880-e1d7a11779ed/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-02 20:19:54,331 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2800347f-ccbe-4533-b880-e1d7a11779ed/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-02 20:19:54,383 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-02 20:19:54,383 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-02 20:19:54,383 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-02 20:19:54,383 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-02 20:19:54,526 INFO L235 CfgBuilder]: Building ICFG [2022-11-02 20:19:54,529 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-02 20:20:01,128 INFO L276 CfgBuilder]: Performing block encoding [2022-11-02 20:20:01,153 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-02 20:20:01,153 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-02 20:20:01,158 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:20:01 BoogieIcfgContainer [2022-11-02 20:20:01,158 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-02 20:20:01,162 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-02 20:20:01,162 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-02 20:20:01,167 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-02 20:20:01,168 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 08:19:50" (1/3) ... [2022-11-02 20:20:01,169 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12506aae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:20:01, skipping insertion in model container [2022-11-02 20:20:01,169 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:19:52" (2/3) ... [2022-11-02 20:20:01,169 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12506aae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:20:01, skipping insertion in model container [2022-11-02 20:20:01,169 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:20:01" (3/3) ... [2022-11-02 20:20:01,171 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr.7.ufo.UNBOUNDED.pals+Problem12_label02.c [2022-11-02 20:20:01,195 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-02 20:20:01,196 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-02 20:20:01,328 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 20:20:01,348 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;@137b9b57, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 20:20:01,348 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-11-02 20:20:01,370 INFO L276 IsEmpty]: Start isEmpty. Operand has 946 states, 943 states have (on average 1.8971367974549311) internal successors, (1789), 945 states have internal predecessors, (1789), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:20:01,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-11-02 20:20:01,394 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:20:01,395 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:20:01,396 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:20:01,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:20:01,406 INFO L85 PathProgramCache]: Analyzing trace with hash -949343158, now seen corresponding path program 1 times [2022-11-02 20:20:01,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:20:01,419 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [698778418] [2022-11-02 20:20:01,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:20:01,420 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:20:01,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:20:01,807 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:20:01,808 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:20:01,808 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [698778418] [2022-11-02 20:20:01,809 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [698778418] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:20:01,809 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:20:01,810 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 20:20:01,811 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1129000218] [2022-11-02 20:20:01,812 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:20:01,817 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-02 20:20:01,819 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:20:01,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-02 20:20:01,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-02 20:20:01,862 INFO L87 Difference]: Start difference. First operand has 946 states, 943 states have (on average 1.8971367974549311) internal successors, (1789), 945 states have internal predecessors, (1789), 0 states have call successors, (0), 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 2 states, 2 states have (on average 21.0) internal successors, (42), 2 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:20:01,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:20:01,965 INFO L93 Difference]: Finished difference Result 1834 states and 3468 transitions. [2022-11-02 20:20:01,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-02 20:20:01,968 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 21.0) internal successors, (42), 2 states have internal predecessors, (42), 0 states have call successors, (0), 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 42 [2022-11-02 20:20:01,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:20:01,993 INFO L225 Difference]: With dead ends: 1834 [2022-11-02 20:20:01,994 INFO L226 Difference]: Without dead ends: 880 [2022-11-02 20:20:02,004 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-02 20:20:02,007 INFO L413 NwaCegarLoop]: 1720 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1720 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:20:02,008 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1720 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:20:02,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 880 states. [2022-11-02 20:20:02,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 880 to 880. [2022-11-02 20:20:02,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 880 states, 878 states have (on average 1.8861047835990887) internal successors, (1656), 879 states have internal predecessors, (1656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:20:02,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 880 states to 880 states and 1656 transitions. [2022-11-02 20:20:02,093 INFO L78 Accepts]: Start accepts. Automaton has 880 states and 1656 transitions. Word has length 42 [2022-11-02 20:20:02,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:20:02,093 INFO L495 AbstractCegarLoop]: Abstraction has 880 states and 1656 transitions. [2022-11-02 20:20:02,094 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 21.0) internal successors, (42), 2 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:20:02,094 INFO L276 IsEmpty]: Start isEmpty. Operand 880 states and 1656 transitions. [2022-11-02 20:20:02,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-11-02 20:20:02,095 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:20:02,096 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:20:02,096 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-02 20:20:02,096 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:20:02,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:20:02,097 INFO L85 PathProgramCache]: Analyzing trace with hash -1343709944, now seen corresponding path program 1 times [2022-11-02 20:20:02,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:20:02,098 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2037644218] [2022-11-02 20:20:02,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:20:02,098 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:20:02,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:20:02,375 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:20:02,376 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:20:02,376 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2037644218] [2022-11-02 20:20:02,376 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2037644218] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:20:02,376 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:20:02,377 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 20:20:02,377 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [468751623] [2022-11-02 20:20:02,377 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:20:02,379 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:20:02,379 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:20:02,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:20:02,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:20:02,381 INFO L87 Difference]: Start difference. First operand 880 states and 1656 transitions. Second operand has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:20:02,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:20:02,574 INFO L93 Difference]: Finished difference Result 954 states and 1771 transitions. [2022-11-02 20:20:02,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:20:02,576 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 0 states have call successors, (0), 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 42 [2022-11-02 20:20:02,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:20:02,581 INFO L225 Difference]: With dead ends: 954 [2022-11-02 20:20:02,582 INFO L226 Difference]: Without dead ends: 880 [2022-11-02 20:20:02,585 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:20:02,588 INFO L413 NwaCegarLoop]: 1654 mSDtfsCounter, 3 mSDsluCounter, 4909 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 6563 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:20:02,589 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 6563 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:20:02,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 880 states. [2022-11-02 20:20:02,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 880 to 880. [2022-11-02 20:20:02,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 880 states, 878 states have (on average 1.8291571753986333) internal successors, (1606), 879 states have internal predecessors, (1606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:20:02,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 880 states to 880 states and 1606 transitions. [2022-11-02 20:20:02,668 INFO L78 Accepts]: Start accepts. Automaton has 880 states and 1606 transitions. Word has length 42 [2022-11-02 20:20:02,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:20:02,669 INFO L495 AbstractCegarLoop]: Abstraction has 880 states and 1606 transitions. [2022-11-02 20:20:02,669 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:20:02,670 INFO L276 IsEmpty]: Start isEmpty. Operand 880 states and 1606 transitions. [2022-11-02 20:20:02,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-11-02 20:20:02,683 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:20:02,683 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:20:02,683 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-02 20:20:02,684 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:20:02,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:20:02,685 INFO L85 PathProgramCache]: Analyzing trace with hash -291494936, now seen corresponding path program 1 times [2022-11-02 20:20:02,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:20:02,685 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2121472144] [2022-11-02 20:20:02,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:20:02,686 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:20:02,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:20:03,085 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:20:03,085 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:20:03,086 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2121472144] [2022-11-02 20:20:03,086 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2121472144] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:20:03,086 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:20:03,086 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 20:20:03,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1993270145] [2022-11-02 20:20:03,087 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:20:03,087 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:20:03,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:20:03,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:20:03,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:20:03,089 INFO L87 Difference]: Start difference. First operand 880 states and 1606 transitions. Second operand has 4 states, 4 states have (on average 15.75) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:20:13,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:20:13,207 INFO L93 Difference]: Finished difference Result 3135 states and 5915 transitions. [2022-11-02 20:20:13,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 20:20:13,208 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 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 63 [2022-11-02 20:20:13,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:20:13,218 INFO L225 Difference]: With dead ends: 3135 [2022-11-02 20:20:13,218 INFO L226 Difference]: Without dead ends: 2382 [2022-11-02 20:20:13,220 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:20:13,222 INFO L413 NwaCegarLoop]: 860 mSDtfsCounter, 2509 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 5518 mSolverCounterSat, 1100 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2509 SdHoareTripleChecker+Valid, 878 SdHoareTripleChecker+Invalid, 6618 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1100 IncrementalHoareTripleChecker+Valid, 5518 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.8s IncrementalHoareTripleChecker+Time [2022-11-02 20:20:13,222 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2509 Valid, 878 Invalid, 6618 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1100 Valid, 5518 Invalid, 0 Unknown, 0 Unchecked, 9.8s Time] [2022-11-02 20:20:13,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2382 states. [2022-11-02 20:20:13,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2382 to 2382. [2022-11-02 20:20:13,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2382 states, 2380 states have (on average 1.5680672268907563) internal successors, (3732), 2381 states have internal predecessors, (3732), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:20:13,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2382 states to 2382 states and 3732 transitions. [2022-11-02 20:20:13,297 INFO L78 Accepts]: Start accepts. Automaton has 2382 states and 3732 transitions. Word has length 63 [2022-11-02 20:20:13,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:20:13,297 INFO L495 AbstractCegarLoop]: Abstraction has 2382 states and 3732 transitions. [2022-11-02 20:20:13,298 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:20:13,298 INFO L276 IsEmpty]: Start isEmpty. Operand 2382 states and 3732 transitions. [2022-11-02 20:20:13,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-11-02 20:20:13,300 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:20:13,300 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:20:13,301 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-02 20:20:13,301 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:20:13,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:20:13,302 INFO L85 PathProgramCache]: Analyzing trace with hash -461668761, now seen corresponding path program 1 times [2022-11-02 20:20:13,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:20:13,302 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1121277049] [2022-11-02 20:20:13,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:20:13,303 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:20:13,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:20:13,411 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:20:13,411 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:20:13,412 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1121277049] [2022-11-02 20:20:13,412 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1121277049] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:20:13,412 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:20:13,413 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 20:20:13,413 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [173550401] [2022-11-02 20:20:13,413 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:20:13,414 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:20:13,414 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:20:13,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:20:13,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:20:13,415 INFO L87 Difference]: Start difference. First operand 2382 states and 3732 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:20:13,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:20:13,473 INFO L93 Difference]: Finished difference Result 2516 states and 3944 transitions. [2022-11-02 20:20:13,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:20:13,474 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 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 91 [2022-11-02 20:20:13,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:20:13,484 INFO L225 Difference]: With dead ends: 2516 [2022-11-02 20:20:13,484 INFO L226 Difference]: Without dead ends: 2446 [2022-11-02 20:20:13,486 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 [2022-11-02 20:20:13,487 INFO L413 NwaCegarLoop]: 1674 mSDtfsCounter, 1532 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1532 SdHoareTripleChecker+Valid, 1791 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:20:13,488 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1532 Valid, 1791 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:20:13,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2446 states. [2022-11-02 20:20:13,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2446 to 2444. [2022-11-02 20:20:13,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2444 states, 2442 states have (on average 1.5687960687960687) internal successors, (3831), 2443 states have internal predecessors, (3831), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:20:13,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2444 states to 2444 states and 3831 transitions. [2022-11-02 20:20:13,572 INFO L78 Accepts]: Start accepts. Automaton has 2444 states and 3831 transitions. Word has length 91 [2022-11-02 20:20:13,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:20:13,573 INFO L495 AbstractCegarLoop]: Abstraction has 2444 states and 3831 transitions. [2022-11-02 20:20:13,574 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:20:13,574 INFO L276 IsEmpty]: Start isEmpty. Operand 2444 states and 3831 transitions. [2022-11-02 20:20:13,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-11-02 20:20:13,576 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:20:13,576 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:20:13,577 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-02 20:20:13,577 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:20:13,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:20:13,578 INFO L85 PathProgramCache]: Analyzing trace with hash -1207251491, now seen corresponding path program 1 times [2022-11-02 20:20:13,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:20:13,579 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [4412080] [2022-11-02 20:20:13,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:20:13,579 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:20:13,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:20:13,780 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:20:13,780 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:20:13,781 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [4412080] [2022-11-02 20:20:13,782 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [4412080] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:20:13,783 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:20:13,784 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 20:20:13,785 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [66316350] [2022-11-02 20:20:13,785 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:20:13,788 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:20:13,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:20:13,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:20:13,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:20:13,790 INFO L87 Difference]: Start difference. First operand 2444 states and 3831 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:20:13,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:20:13,862 INFO L93 Difference]: Finished difference Result 2696 states and 4231 transitions. [2022-11-02 20:20:13,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:20:13,863 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 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 91 [2022-11-02 20:20:13,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:20:13,877 INFO L225 Difference]: With dead ends: 2696 [2022-11-02 20:20:13,877 INFO L226 Difference]: Without dead ends: 2564 [2022-11-02 20:20:13,880 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 [2022-11-02 20:20:13,884 INFO L413 NwaCegarLoop]: 1669 mSDtfsCounter, 1528 mSDsluCounter, 121 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1528 SdHoareTripleChecker+Valid, 1790 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:20:13,885 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1528 Valid, 1790 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:20:13,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2564 states. [2022-11-02 20:20:13,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2564 to 2562. [2022-11-02 20:20:13,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2562 states, 2560 states have (on average 1.56953125) internal successors, (4018), 2561 states have internal predecessors, (4018), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:20:13,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2562 states to 2562 states and 4018 transitions. [2022-11-02 20:20:13,971 INFO L78 Accepts]: Start accepts. Automaton has 2562 states and 4018 transitions. Word has length 91 [2022-11-02 20:20:13,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:20:13,975 INFO L495 AbstractCegarLoop]: Abstraction has 2562 states and 4018 transitions. [2022-11-02 20:20:13,976 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:20:13,976 INFO L276 IsEmpty]: Start isEmpty. Operand 2562 states and 4018 transitions. [2022-11-02 20:20:13,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-11-02 20:20:13,978 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:20:13,980 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:20:13,980 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-02 20:20:13,984 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:20:13,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:20:13,992 INFO L85 PathProgramCache]: Analyzing trace with hash 1147684947, now seen corresponding path program 1 times [2022-11-02 20:20:13,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:20:13,992 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [19751280] [2022-11-02 20:20:13,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:20:13,993 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:20:14,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:20:14,141 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:20:14,141 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:20:14,142 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [19751280] [2022-11-02 20:20:14,142 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [19751280] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:20:14,142 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:20:14,142 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 20:20:14,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [927727529] [2022-11-02 20:20:14,143 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:20:14,143 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:20:14,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:20:14,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:20:14,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:20:14,145 INFO L87 Difference]: Start difference. First operand 2562 states and 4018 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:20:14,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:20:14,226 INFO L93 Difference]: Finished difference Result 3038 states and 4772 transitions. [2022-11-02 20:20:14,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:20:14,227 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 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 91 [2022-11-02 20:20:14,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:20:14,241 INFO L225 Difference]: With dead ends: 3038 [2022-11-02 20:20:14,242 INFO L226 Difference]: Without dead ends: 2788 [2022-11-02 20:20:14,244 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 [2022-11-02 20:20:14,248 INFO L413 NwaCegarLoop]: 1664 mSDtfsCounter, 1524 mSDsluCounter, 125 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1524 SdHoareTripleChecker+Valid, 1789 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:20:14,249 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1524 Valid, 1789 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:20:14,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2788 states. [2022-11-02 20:20:14,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2788 to 2786. [2022-11-02 20:20:14,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2786 states, 2784 states have (on average 1.569683908045977) internal successors, (4370), 2785 states have internal predecessors, (4370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:20:14,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2786 states to 2786 states and 4370 transitions. [2022-11-02 20:20:14,348 INFO L78 Accepts]: Start accepts. Automaton has 2786 states and 4370 transitions. Word has length 91 [2022-11-02 20:20:14,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:20:14,349 INFO L495 AbstractCegarLoop]: Abstraction has 2786 states and 4370 transitions. [2022-11-02 20:20:14,350 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:20:14,350 INFO L276 IsEmpty]: Start isEmpty. Operand 2786 states and 4370 transitions. [2022-11-02 20:20:14,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-11-02 20:20:14,358 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:20:14,358 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:20:14,358 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-02 20:20:14,359 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:20:14,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:20:14,359 INFO L85 PathProgramCache]: Analyzing trace with hash -446599735, now seen corresponding path program 1 times [2022-11-02 20:20:14,359 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:20:14,360 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [899958717] [2022-11-02 20:20:14,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:20:14,360 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:20:14,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:20:14,475 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:20:14,476 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:20:14,476 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [899958717] [2022-11-02 20:20:14,476 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [899958717] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:20:14,476 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:20:14,476 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 20:20:14,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [476896109] [2022-11-02 20:20:14,477 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:20:14,477 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:20:14,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:20:14,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:20:14,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:20:14,478 INFO L87 Difference]: Start difference. First operand 2786 states and 4370 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:20:14,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:20:14,576 INFO L93 Difference]: Finished difference Result 3686 states and 5788 transitions. [2022-11-02 20:20:14,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:20:14,576 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 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 91 [2022-11-02 20:20:14,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:20:14,589 INFO L225 Difference]: With dead ends: 3686 [2022-11-02 20:20:14,589 INFO L226 Difference]: Without dead ends: 3212 [2022-11-02 20:20:14,591 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 [2022-11-02 20:20:14,592 INFO L413 NwaCegarLoop]: 1659 mSDtfsCounter, 1520 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1520 SdHoareTripleChecker+Valid, 1788 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:20:14,593 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1520 Valid, 1788 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:20:14,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3212 states. [2022-11-02 20:20:14,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3212 to 3210. [2022-11-02 20:20:14,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3210 states, 3208 states have (on average 1.5679551122194513) internal successors, (5030), 3209 states have internal predecessors, (5030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:20:14,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3210 states to 3210 states and 5030 transitions. [2022-11-02 20:20:14,719 INFO L78 Accepts]: Start accepts. Automaton has 3210 states and 5030 transitions. Word has length 91 [2022-11-02 20:20:14,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:20:14,719 INFO L495 AbstractCegarLoop]: Abstraction has 3210 states and 5030 transitions. [2022-11-02 20:20:14,720 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:20:14,720 INFO L276 IsEmpty]: Start isEmpty. Operand 3210 states and 5030 transitions. [2022-11-02 20:20:14,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-11-02 20:20:14,721 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:20:14,721 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:20:14,721 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-02 20:20:14,722 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:20:14,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:20:14,722 INFO L85 PathProgramCache]: Analyzing trace with hash -108806593, now seen corresponding path program 1 times [2022-11-02 20:20:14,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:20:14,723 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [713117754] [2022-11-02 20:20:14,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:20:14,723 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:20:14,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:20:14,797 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:20:14,798 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:20:14,798 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [713117754] [2022-11-02 20:20:14,798 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [713117754] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:20:14,798 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:20:14,798 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 20:20:14,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [652200804] [2022-11-02 20:20:14,799 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:20:14,799 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:20:14,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:20:14,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:20:14,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:20:14,800 INFO L87 Difference]: Start difference. First operand 3210 states and 5030 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:20:14,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:20:14,944 INFO L93 Difference]: Finished difference Result 4910 states and 7688 transitions. [2022-11-02 20:20:14,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:20:14,945 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 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 91 [2022-11-02 20:20:14,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:20:14,960 INFO L225 Difference]: With dead ends: 4910 [2022-11-02 20:20:14,960 INFO L226 Difference]: Without dead ends: 4012 [2022-11-02 20:20:14,963 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 [2022-11-02 20:20:14,963 INFO L413 NwaCegarLoop]: 1654 mSDtfsCounter, 1516 mSDsluCounter, 133 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1516 SdHoareTripleChecker+Valid, 1787 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:20:14,964 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1516 Valid, 1787 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:20:14,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4012 states. [2022-11-02 20:20:15,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4012 to 4010. [2022-11-02 20:20:15,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4010 states, 4008 states have (on average 1.562375249500998) internal successors, (6262), 4009 states have internal predecessors, (6262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:20:15,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4010 states to 4010 states and 6262 transitions. [2022-11-02 20:20:15,186 INFO L78 Accepts]: Start accepts. Automaton has 4010 states and 6262 transitions. Word has length 91 [2022-11-02 20:20:15,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:20:15,186 INFO L495 AbstractCegarLoop]: Abstraction has 4010 states and 6262 transitions. [2022-11-02 20:20:15,186 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:20:15,187 INFO L276 IsEmpty]: Start isEmpty. Operand 4010 states and 6262 transitions. [2022-11-02 20:20:15,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-11-02 20:20:15,188 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:20:15,191 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:20:15,191 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-02 20:20:15,191 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:20:15,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:20:15,192 INFO L85 PathProgramCache]: Analyzing trace with hash 1109178805, now seen corresponding path program 1 times [2022-11-02 20:20:15,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:20:15,192 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [506690665] [2022-11-02 20:20:15,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:20:15,192 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:20:15,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:20:15,442 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:20:15,443 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:20:15,443 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [506690665] [2022-11-02 20:20:15,443 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [506690665] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:20:15,443 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:20:15,443 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-02 20:20:15,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1895110740] [2022-11-02 20:20:15,444 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:20:15,444 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-02 20:20:15,444 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:20:15,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-02 20:20:15,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-02 20:20:15,446 INFO L87 Difference]: Start difference. First operand 4010 states and 6262 transitions. Second operand has 9 states, 9 states have (on average 10.11111111111111) internal successors, (91), 9 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:20:17,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:20:17,961 INFO L93 Difference]: Finished difference Result 27782 states and 43236 transitions. [2022-11-02 20:20:17,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-02 20:20:17,961 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.11111111111111) internal successors, (91), 9 states have internal predecessors, (91), 0 states have call successors, (0), 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 91 [2022-11-02 20:20:17,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:20:18,036 INFO L225 Difference]: With dead ends: 27782 [2022-11-02 20:20:18,036 INFO L226 Difference]: Without dead ends: 26084 [2022-11-02 20:20:18,045 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=124, Invalid=256, Unknown=0, NotChecked=0, Total=380 [2022-11-02 20:20:18,046 INFO L413 NwaCegarLoop]: 1600 mSDtfsCounter, 12616 mSDsluCounter, 2508 mSDsCounter, 0 mSdLazyCounter, 174 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12616 SdHoareTripleChecker+Valid, 4108 SdHoareTripleChecker+Invalid, 186 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 174 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 20:20:18,046 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12616 Valid, 4108 Invalid, 186 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 174 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-02 20:20:18,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26084 states. [2022-11-02 20:20:18,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26084 to 5706. [2022-11-02 20:20:18,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5706 states, 5704 states have (on average 1.5494389901823282) internal successors, (8838), 5705 states have internal predecessors, (8838), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:20:18,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5706 states to 5706 states and 8838 transitions. [2022-11-02 20:20:18,919 INFO L78 Accepts]: Start accepts. Automaton has 5706 states and 8838 transitions. Word has length 91 [2022-11-02 20:20:18,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:20:18,920 INFO L495 AbstractCegarLoop]: Abstraction has 5706 states and 8838 transitions. [2022-11-02 20:20:18,921 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.11111111111111) internal successors, (91), 9 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:20:18,921 INFO L276 IsEmpty]: Start isEmpty. Operand 5706 states and 8838 transitions. [2022-11-02 20:20:18,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-11-02 20:20:18,922 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:20:18,923 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:20:18,923 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-02 20:20:18,923 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:20:18,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:20:18,924 INFO L85 PathProgramCache]: Analyzing trace with hash -646747483, now seen corresponding path program 1 times [2022-11-02 20:20:18,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:20:18,925 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1018918919] [2022-11-02 20:20:18,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:20:18,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:20:18,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:20:19,050 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:20:19,050 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:20:19,051 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1018918919] [2022-11-02 20:20:19,051 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1018918919] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:20:19,051 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:20:19,051 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 20:20:19,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [510358674] [2022-11-02 20:20:19,052 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:20:19,052 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:20:19,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:20:19,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:20:19,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:20:19,053 INFO L87 Difference]: Start difference. First operand 5706 states and 8838 transitions. Second operand has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 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) [2022-11-02 20:20:19,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:20:19,816 INFO L93 Difference]: Finished difference Result 12142 states and 18664 transitions. [2022-11-02 20:20:19,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:20:19,816 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 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 93 [2022-11-02 20:20:19,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:20:19,837 INFO L225 Difference]: With dead ends: 12142 [2022-11-02 20:20:19,837 INFO L226 Difference]: Without dead ends: 8748 [2022-11-02 20:20:19,844 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 [2022-11-02 20:20:19,845 INFO L413 NwaCegarLoop]: 1602 mSDtfsCounter, 1507 mSDsluCounter, 104 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1507 SdHoareTripleChecker+Valid, 1706 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:20:19,845 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1507 Valid, 1706 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:20:19,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8748 states. [2022-11-02 20:20:20,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8748 to 8682. [2022-11-02 20:20:20,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8682 states, 8680 states have (on average 1.5232718894009216) internal successors, (13222), 8681 states have internal predecessors, (13222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:20:20,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8682 states to 8682 states and 13222 transitions. [2022-11-02 20:20:20,846 INFO L78 Accepts]: Start accepts. Automaton has 8682 states and 13222 transitions. Word has length 93 [2022-11-02 20:20:20,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:20:20,847 INFO L495 AbstractCegarLoop]: Abstraction has 8682 states and 13222 transitions. [2022-11-02 20:20:20,847 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 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) [2022-11-02 20:20:20,847 INFO L276 IsEmpty]: Start isEmpty. Operand 8682 states and 13222 transitions. [2022-11-02 20:20:20,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-11-02 20:20:20,849 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:20:20,849 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:20:20,849 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-02 20:20:20,849 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:20:20,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:20:20,850 INFO L85 PathProgramCache]: Analyzing trace with hash -580253971, now seen corresponding path program 1 times [2022-11-02 20:20:20,851 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:20:20,851 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1775966136] [2022-11-02 20:20:20,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:20:20,851 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:20:20,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:20:21,406 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:20:21,406 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:20:21,406 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1775966136] [2022-11-02 20:20:21,407 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1775966136] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:20:21,407 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:20:21,407 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-02 20:20:21,407 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1008287879] [2022-11-02 20:20:21,408 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:20:21,408 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-02 20:20:21,408 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:20:21,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-02 20:20:21,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-11-02 20:20:21,410 INFO L87 Difference]: Start difference. First operand 8682 states and 13222 transitions. Second operand has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 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) [2022-11-02 20:20:22,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:20:22,897 INFO L93 Difference]: Finished difference Result 15054 states and 22824 transitions. [2022-11-02 20:20:22,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-02 20:20:22,897 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 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 93 [2022-11-02 20:20:22,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:20:22,918 INFO L225 Difference]: With dead ends: 15054 [2022-11-02 20:20:22,919 INFO L226 Difference]: Without dead ends: 8684 [2022-11-02 20:20:22,927 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=116, Unknown=0, NotChecked=0, Total=182 [2022-11-02 20:20:22,928 INFO L413 NwaCegarLoop]: 1644 mSDtfsCounter, 4941 mSDsluCounter, 654 mSDsCounter, 0 mSdLazyCounter, 135 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4941 SdHoareTripleChecker+Valid, 2298 SdHoareTripleChecker+Invalid, 141 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:20:22,928 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4941 Valid, 2298 Invalid, 141 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 135 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:20:22,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8684 states. [2022-11-02 20:20:23,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8684 to 8682. [2022-11-02 20:20:23,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8682 states, 8680 states have (on average 1.5158986175115208) internal successors, (13158), 8681 states have internal predecessors, (13158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:20:23,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8682 states to 8682 states and 13158 transitions. [2022-11-02 20:20:23,720 INFO L78 Accepts]: Start accepts. Automaton has 8682 states and 13158 transitions. Word has length 93 [2022-11-02 20:20:23,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:20:23,720 INFO L495 AbstractCegarLoop]: Abstraction has 8682 states and 13158 transitions. [2022-11-02 20:20:23,721 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 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) [2022-11-02 20:20:23,721 INFO L276 IsEmpty]: Start isEmpty. Operand 8682 states and 13158 transitions. [2022-11-02 20:20:23,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-11-02 20:20:23,722 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:20:23,723 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:20:23,723 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-02 20:20:23,723 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:20:23,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:20:23,724 INFO L85 PathProgramCache]: Analyzing trace with hash -1326262359, now seen corresponding path program 1 times [2022-11-02 20:20:23,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:20:23,724 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2011495868] [2022-11-02 20:20:23,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:20:23,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:20:23,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:20:23,796 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:20:23,796 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:20:23,796 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2011495868] [2022-11-02 20:20:23,796 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2011495868] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:20:23,797 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:20:23,797 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 20:20:23,797 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [387574887] [2022-11-02 20:20:23,797 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:20:23,798 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:20:23,798 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:20:23,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:20:23,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:20:23,799 INFO L87 Difference]: Start difference. First operand 8682 states and 13158 transitions. Second operand has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 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) [2022-11-02 20:20:25,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:20:25,143 INFO L93 Difference]: Finished difference Result 20654 states and 30952 transitions. [2022-11-02 20:20:25,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:20:25,145 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 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 93 [2022-11-02 20:20:25,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:20:25,177 INFO L225 Difference]: With dead ends: 20654 [2022-11-02 20:20:25,177 INFO L226 Difference]: Without dead ends: 14284 [2022-11-02 20:20:25,186 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 [2022-11-02 20:20:25,187 INFO L413 NwaCegarLoop]: 1688 mSDtfsCounter, 1536 mSDsluCounter, 113 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1536 SdHoareTripleChecker+Valid, 1801 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:20:25,188 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1536 Valid, 1801 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:20:25,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14284 states. [2022-11-02 20:20:26,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14284 to 14282. [2022-11-02 20:20:26,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14282 states, 14280 states have (on average 1.4906162464985995) internal successors, (21286), 14281 states have internal predecessors, (21286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:20:27,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14282 states to 14282 states and 21286 transitions. [2022-11-02 20:20:27,026 INFO L78 Accepts]: Start accepts. Automaton has 14282 states and 21286 transitions. Word has length 93 [2022-11-02 20:20:27,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:20:27,026 INFO L495 AbstractCegarLoop]: Abstraction has 14282 states and 21286 transitions. [2022-11-02 20:20:27,027 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 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) [2022-11-02 20:20:27,027 INFO L276 IsEmpty]: Start isEmpty. Operand 14282 states and 21286 transitions. [2022-11-02 20:20:27,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2022-11-02 20:20:27,028 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:20:27,029 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:20:27,029 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-02 20:20:27,029 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:20:27,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:20:27,030 INFO L85 PathProgramCache]: Analyzing trace with hash -1222726774, now seen corresponding path program 1 times [2022-11-02 20:20:27,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:20:27,031 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [167231811] [2022-11-02 20:20:27,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:20:27,031 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:20:27,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:20:27,458 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:20:27,459 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:20:27,459 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [167231811] [2022-11-02 20:20:27,459 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [167231811] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:20:27,460 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:20:27,460 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-02 20:20:27,460 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1117663220] [2022-11-02 20:20:27,460 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:20:27,461 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-02 20:20:27,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:20:27,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-02 20:20:27,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-02 20:20:27,462 INFO L87 Difference]: Start difference. First operand 14282 states and 21286 transitions. Second operand has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:20:31,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:20:31,403 INFO L93 Difference]: Finished difference Result 23152 states and 34198 transitions. [2022-11-02 20:20:31,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-02 20:20:31,404 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 0 states have call successors, (0), 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 94 [2022-11-02 20:20:31,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:20:31,456 INFO L225 Difference]: With dead ends: 23152 [2022-11-02 20:20:31,456 INFO L226 Difference]: Without dead ends: 23150 [2022-11-02 20:20:31,462 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2022-11-02 20:20:31,463 INFO L413 NwaCegarLoop]: 1659 mSDtfsCounter, 801 mSDsluCounter, 9281 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 801 SdHoareTripleChecker+Valid, 10940 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:20:31,464 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [801 Valid, 10940 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:20:31,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23150 states. [2022-11-02 20:20:33,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23150 to 14666. [2022-11-02 20:20:33,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14666 states, 14664 states have (on average 1.4734042553191489) internal successors, (21606), 14665 states have internal predecessors, (21606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:20:33,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14666 states to 14666 states and 21606 transitions. [2022-11-02 20:20:33,917 INFO L78 Accepts]: Start accepts. Automaton has 14666 states and 21606 transitions. Word has length 94 [2022-11-02 20:20:33,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:20:33,918 INFO L495 AbstractCegarLoop]: Abstraction has 14666 states and 21606 transitions. [2022-11-02 20:20:33,918 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:20:33,918 INFO L276 IsEmpty]: Start isEmpty. Operand 14666 states and 21606 transitions. [2022-11-02 20:20:33,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2022-11-02 20:20:33,920 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:20:33,920 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:20:33,920 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-02 20:20:33,921 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:20:33,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:20:33,922 INFO L85 PathProgramCache]: Analyzing trace with hash -362720764, now seen corresponding path program 1 times [2022-11-02 20:20:33,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:20:33,922 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1765650700] [2022-11-02 20:20:33,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:20:33,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:20:33,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:20:34,005 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:20:34,005 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:20:34,006 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1765650700] [2022-11-02 20:20:34,006 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1765650700] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:20:34,006 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:20:34,006 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 20:20:34,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [418706248] [2022-11-02 20:20:34,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:20:34,007 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:20:34,007 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:20:34,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:20:34,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:20:34,009 INFO L87 Difference]: Start difference. First operand 14666 states and 21606 transitions. Second operand has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:20:36,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:20:36,832 INFO L93 Difference]: Finished difference Result 27217 states and 40044 transitions. [2022-11-02 20:20:36,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:20:36,832 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 95 [2022-11-02 20:20:36,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:20:36,873 INFO L225 Difference]: With dead ends: 27217 [2022-11-02 20:20:36,874 INFO L226 Difference]: Without dead ends: 20430 [2022-11-02 20:20:36,883 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 [2022-11-02 20:20:36,884 INFO L413 NwaCegarLoop]: 1696 mSDtfsCounter, 1537 mSDsluCounter, 109 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1537 SdHoareTripleChecker+Valid, 1805 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:20:36,885 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1537 Valid, 1805 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:20:36,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20430 states. [2022-11-02 20:20:39,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20430 to 20428. [2022-11-02 20:20:39,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20428 states, 20426 states have (on average 1.46205816116714) internal successors, (29864), 20427 states have internal predecessors, (29864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:20:39,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20428 states to 20428 states and 29864 transitions. [2022-11-02 20:20:39,925 INFO L78 Accepts]: Start accepts. Automaton has 20428 states and 29864 transitions. Word has length 95 [2022-11-02 20:20:39,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:20:39,926 INFO L495 AbstractCegarLoop]: Abstraction has 20428 states and 29864 transitions. [2022-11-02 20:20:39,926 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:20:39,926 INFO L276 IsEmpty]: Start isEmpty. Operand 20428 states and 29864 transitions. [2022-11-02 20:20:39,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2022-11-02 20:20:39,939 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:20:39,940 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-02 20:20:39,940 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-02 20:20:39,940 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:20:39,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:20:39,941 INFO L85 PathProgramCache]: Analyzing trace with hash 1202553482, now seen corresponding path program 1 times [2022-11-02 20:20:39,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:20:39,941 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2030431420] [2022-11-02 20:20:39,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:20:39,942 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:20:39,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:20:40,255 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-02 20:20:40,256 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:20:40,256 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2030431420] [2022-11-02 20:20:40,256 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2030431420] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:20:40,256 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:20:40,257 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-02 20:20:40,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [591552066] [2022-11-02 20:20:40,257 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:20:40,258 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-02 20:20:40,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:20:40,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-02 20:20:40,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-11-02 20:20:40,259 INFO L87 Difference]: Start difference. First operand 20428 states and 29864 transitions. Second operand has 9 states, 9 states have (on average 13.0) internal successors, (117), 9 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:21:00,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:21:00,068 INFO L93 Difference]: Finished difference Result 150748 states and 218480 transitions. [2022-11-02 20:21:00,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-02 20:21:00,069 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 13.0) internal successors, (117), 9 states have internal predecessors, (117), 0 states have call successors, (0), 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 130 [2022-11-02 20:21:00,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:21:00,362 INFO L225 Difference]: With dead ends: 150748 [2022-11-02 20:21:00,363 INFO L226 Difference]: Without dead ends: 132634 [2022-11-02 20:21:00,461 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2022-11-02 20:21:00,462 INFO L413 NwaCegarLoop]: 1708 mSDtfsCounter, 10875 mSDsluCounter, 2449 mSDsCounter, 0 mSdLazyCounter, 147 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10875 SdHoareTripleChecker+Valid, 4157 SdHoareTripleChecker+Invalid, 153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 20:21:00,463 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10875 Valid, 4157 Invalid, 153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 147 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-02 20:21:00,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132634 states. [2022-11-02 20:21:07,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132634 to 38540. [2022-11-02 20:21:07,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38540 states, 38538 states have (on average 1.4508277544242048) internal successors, (55912), 38539 states have internal predecessors, (55912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:21:07,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38540 states to 38540 states and 55912 transitions. [2022-11-02 20:21:07,666 INFO L78 Accepts]: Start accepts. Automaton has 38540 states and 55912 transitions. Word has length 130 [2022-11-02 20:21:07,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:21:07,666 INFO L495 AbstractCegarLoop]: Abstraction has 38540 states and 55912 transitions. [2022-11-02 20:21:07,667 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.0) internal successors, (117), 9 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:21:07,667 INFO L276 IsEmpty]: Start isEmpty. Operand 38540 states and 55912 transitions. [2022-11-02 20:21:07,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2022-11-02 20:21:07,681 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:21:07,682 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-02 20:21:07,682 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-02 20:21:07,682 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:21:07,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:21:07,683 INFO L85 PathProgramCache]: Analyzing trace with hash -566229334, now seen corresponding path program 1 times [2022-11-02 20:21:07,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:21:07,684 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1703087571] [2022-11-02 20:21:07,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:21:07,684 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:21:07,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:21:07,988 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-02 20:21:07,988 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:21:07,988 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1703087571] [2022-11-02 20:21:07,989 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1703087571] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:21:07,989 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:21:07,989 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-02 20:21:07,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [177315721] [2022-11-02 20:21:07,990 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:21:07,990 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-02 20:21:07,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:21:07,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-02 20:21:07,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-11-02 20:21:07,991 INFO L87 Difference]: Start difference. First operand 38540 states and 55912 transitions. Second operand has 9 states, 9 states have (on average 13.11111111111111) internal successors, (118), 9 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)