./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.2.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4e7fbc69 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bab01f1-85cc-439a-b02c-e497f38b6210/bin/uautomizer-QkZJyEgLgS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bab01f1-85cc-439a-b02c-e497f38b6210/bin/uautomizer-QkZJyEgLgS/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bab01f1-85cc-439a-b02c-e497f38b6210/bin/uautomizer-QkZJyEgLgS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bab01f1-85cc-439a-b02c-e497f38b6210/bin/uautomizer-QkZJyEgLgS/config/AutomizerReach.xml -i ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.2.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bab01f1-85cc-439a-b02c-e497f38b6210/bin/uautomizer-QkZJyEgLgS/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bab01f1-85cc-439a-b02c-e497f38b6210/bin/uautomizer-QkZJyEgLgS --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 1a76dc897aa0702a7581955a590e68a0e3d7c15bffbb5939a80772bf70ad5d7a --- 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-4e7fbc6 [2022-11-23 01:47:23,214 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-23 01:47:23,216 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-23 01:47:23,237 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-23 01:47:23,237 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-23 01:47:23,238 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-23 01:47:23,239 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-23 01:47:23,246 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-23 01:47:23,248 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-23 01:47:23,253 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-23 01:47:23,255 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-23 01:47:23,258 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-23 01:47:23,258 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-23 01:47:23,260 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-23 01:47:23,263 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-23 01:47:23,266 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-23 01:47:23,267 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-23 01:47:23,268 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-23 01:47:23,270 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-23 01:47:23,276 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-23 01:47:23,277 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-23 01:47:23,281 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-23 01:47:23,282 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-23 01:47:23,283 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-23 01:47:23,288 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-23 01:47:23,289 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-23 01:47:23,289 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-23 01:47:23,290 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-23 01:47:23,290 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-23 01:47:23,291 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-23 01:47:23,291 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-23 01:47:23,292 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-23 01:47:23,296 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-23 01:47:23,299 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-23 01:47:23,300 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-23 01:47:23,300 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-23 01:47:23,301 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-23 01:47:23,301 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-23 01:47:23,301 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-23 01:47:23,304 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-23 01:47:23,305 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-23 01:47:23,306 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bab01f1-85cc-439a-b02c-e497f38b6210/bin/uautomizer-QkZJyEgLgS/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-23 01:47:23,338 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-23 01:47:23,338 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-23 01:47:23,339 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-23 01:47:23,339 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-23 01:47:23,340 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-23 01:47:23,340 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-23 01:47:23,341 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-23 01:47:23,341 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-23 01:47:23,342 INFO L138 SettingsManager]: * Use SBE=true [2022-11-23 01:47:23,342 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-23 01:47:23,343 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-23 01:47:23,343 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-23 01:47:23,344 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-23 01:47:23,344 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-23 01:47:23,344 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-23 01:47:23,344 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-23 01:47:23,345 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-23 01:47:23,345 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-23 01:47:23,345 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-23 01:47:23,345 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-23 01:47:23,346 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-23 01:47:23,346 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-23 01:47:23,346 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-23 01:47:23,346 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-23 01:47:23,347 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 01:47:23,347 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-23 01:47:23,347 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-23 01:47:23,348 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-23 01:47:23,348 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-23 01:47:23,348 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-23 01:47:23,349 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-23 01:47:23,349 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-23 01:47:23,349 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-11-23 01:47:23,350 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-23 01:47:23,350 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bab01f1-85cc-439a-b02c-e497f38b6210/bin/uautomizer-QkZJyEgLgS/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bab01f1-85cc-439a-b02c-e497f38b6210/bin/uautomizer-QkZJyEgLgS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1a76dc897aa0702a7581955a590e68a0e3d7c15bffbb5939a80772bf70ad5d7a [2022-11-23 01:47:23,616 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-23 01:47:23,641 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-23 01:47:23,644 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-23 01:47:23,645 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-23 01:47:23,646 INFO L275 PluginConnector]: CDTParser initialized [2022-11-23 01:47:23,647 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bab01f1-85cc-439a-b02c-e497f38b6210/bin/uautomizer-QkZJyEgLgS/../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.2.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c [2022-11-23 01:47:26,673 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-23 01:47:27,020 INFO L351 CDTParser]: Found 1 translation units. [2022-11-23 01:47:27,021 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bab01f1-85cc-439a-b02c-e497f38b6210/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.2.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c [2022-11-23 01:47:27,038 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bab01f1-85cc-439a-b02c-e497f38b6210/bin/uautomizer-QkZJyEgLgS/data/ae2c9a041/47f249a720d04dac98eed9b477954fb5/FLAG22cdb114d [2022-11-23 01:47:27,051 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bab01f1-85cc-439a-b02c-e497f38b6210/bin/uautomizer-QkZJyEgLgS/data/ae2c9a041/47f249a720d04dac98eed9b477954fb5 [2022-11-23 01:47:27,054 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-23 01:47:27,055 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-23 01:47:27,056 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-23 01:47:27,057 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-23 01:47:27,060 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-23 01:47:27,061 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 01:47:27" (1/1) ... [2022-11-23 01:47:27,061 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3f72e776 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:47:27, skipping insertion in model container [2022-11-23 01:47:27,062 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 01:47:27" (1/1) ... [2022-11-23 01:47:27,069 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-23 01:47:27,159 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-23 01:47:27,394 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bab01f1-85cc-439a-b02c-e497f38b6210/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.2.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[10634,10647] [2022-11-23 01:47:27,491 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bab01f1-85cc-439a-b02c-e497f38b6210/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.2.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[25860,25873] [2022-11-23 01:47:27,820 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 01:47:27,836 INFO L203 MainTranslator]: Completed pre-run [2022-11-23 01:47:27,894 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bab01f1-85cc-439a-b02c-e497f38b6210/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.2.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[10634,10647] [2022-11-23 01:47:27,945 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bab01f1-85cc-439a-b02c-e497f38b6210/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.2.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[25860,25873] [2022-11-23 01:47:28,139 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 01:47:28,169 INFO L208 MainTranslator]: Completed translation [2022-11-23 01:47:28,170 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:47:28 WrapperNode [2022-11-23 01:47:28,170 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-23 01:47:28,171 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-23 01:47:28,172 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-23 01:47:28,172 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-23 01:47:28,179 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:47:28" (1/1) ... [2022-11-23 01:47:28,228 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:47:28" (1/1) ... [2022-11-23 01:47:28,405 INFO L138 Inliner]: procedures = 23, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 3564 [2022-11-23 01:47:28,406 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-23 01:47:28,406 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-23 01:47:28,406 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-23 01:47:28,407 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-23 01:47:28,416 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:47:28" (1/1) ... [2022-11-23 01:47:28,418 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:47:28" (1/1) ... [2022-11-23 01:47:28,431 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:47:28" (1/1) ... [2022-11-23 01:47:28,431 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:47:28" (1/1) ... [2022-11-23 01:47:28,494 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:47:28" (1/1) ... [2022-11-23 01:47:28,522 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:47:28" (1/1) ... [2022-11-23 01:47:28,534 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:47:28" (1/1) ... [2022-11-23 01:47:28,542 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:47:28" (1/1) ... [2022-11-23 01:47:28,559 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-23 01:47:28,562 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-23 01:47:28,562 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-23 01:47:28,563 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-23 01:47:28,564 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:47:28" (1/1) ... [2022-11-23 01:47:28,571 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 01:47:28,581 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bab01f1-85cc-439a-b02c-e497f38b6210/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 01:47:28,599 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bab01f1-85cc-439a-b02c-e497f38b6210/bin/uautomizer-QkZJyEgLgS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-23 01:47:28,636 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bab01f1-85cc-439a-b02c-e497f38b6210/bin/uautomizer-QkZJyEgLgS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-23 01:47:28,656 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-23 01:47:28,657 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-23 01:47:28,658 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-23 01:47:28,658 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-23 01:47:28,957 INFO L235 CfgBuilder]: Building ICFG [2022-11-23 01:47:28,959 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-23 01:47:30,826 INFO L276 CfgBuilder]: Performing block encoding [2022-11-23 01:47:30,849 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-23 01:47:30,850 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-23 01:47:30,853 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:47:30 BoogieIcfgContainer [2022-11-23 01:47:30,853 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-23 01:47:30,856 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-23 01:47:30,856 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-23 01:47:30,859 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-23 01:47:30,860 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 01:47:27" (1/3) ... [2022-11-23 01:47:30,860 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b177614 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 01:47:30, skipping insertion in model container [2022-11-23 01:47:30,861 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:47:28" (2/3) ... [2022-11-23 01:47:30,862 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b177614 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 01:47:30, skipping insertion in model container [2022-11-23 01:47:30,863 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:47:30" (3/3) ... [2022-11-23 01:47:30,874 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.4.2.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c [2022-11-23 01:47:30,892 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-23 01:47:30,893 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-23 01:47:30,973 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-23 01:47:30,979 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;@57d64534, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 01:47:30,980 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-11-23 01:47:30,987 INFO L276 IsEmpty]: Start isEmpty. Operand has 705 states, 702 states have (on average 1.7834757834757835) internal successors, (1252), 704 states have internal predecessors, (1252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 01:47:31,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-11-23 01:47:31,004 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 01:47:31,005 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] [2022-11-23 01:47:31,005 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 01:47:31,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 01:47:31,010 INFO L85 PathProgramCache]: Analyzing trace with hash -377035951, now seen corresponding path program 1 times [2022-11-23 01:47:31,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 01:47:31,019 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1584549156] [2022-11-23 01:47:31,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 01:47:31,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 01:47:31,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:47:31,471 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 01:47:31,472 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 01:47:31,473 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1584549156] [2022-11-23 01:47:31,473 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1584549156] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 01:47:31,473 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 01:47:31,474 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 01:47:31,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [876160356] [2022-11-23 01:47:31,476 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 01:47:31,482 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 01:47:31,482 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 01:47:31,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 01:47:31,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 01:47:31,522 INFO L87 Difference]: Start difference. First operand has 705 states, 702 states have (on average 1.7834757834757835) internal successors, (1252), 704 states have internal predecessors, (1252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 21.0) 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) [2022-11-23 01:47:31,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 01:47:31,829 INFO L93 Difference]: Finished difference Result 1069 states and 1856 transitions. [2022-11-23 01:47:31,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 01:47:31,831 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) 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 [2022-11-23 01:47:31,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 01:47:31,846 INFO L225 Difference]: With dead ends: 1069 [2022-11-23 01:47:31,847 INFO L226 Difference]: Without dead ends: 846 [2022-11-23 01:47:31,850 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 [2022-11-23 01:47:31,853 INFO L413 NwaCegarLoop]: 1250 mSDtfsCounter, 631 mSDsluCounter, 829 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 631 SdHoareTripleChecker+Valid, 2079 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 01:47:31,854 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [631 Valid, 2079 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 01:47:31,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 846 states. [2022-11-23 01:47:31,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 846 to 844. [2022-11-23 01:47:31,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 844 states, 842 states have (on average 1.368171021377672) internal successors, (1152), 843 states have internal predecessors, (1152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 01:47:31,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 844 states to 844 states and 1152 transitions. [2022-11-23 01:47:31,943 INFO L78 Accepts]: Start accepts. Automaton has 844 states and 1152 transitions. Word has length 63 [2022-11-23 01:47:31,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 01:47:31,944 INFO L495 AbstractCegarLoop]: Abstraction has 844 states and 1152 transitions. [2022-11-23 01:47:31,944 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) 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) [2022-11-23 01:47:31,944 INFO L276 IsEmpty]: Start isEmpty. Operand 844 states and 1152 transitions. [2022-11-23 01:47:31,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-11-23 01:47:31,947 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 01:47:31,948 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] [2022-11-23 01:47:31,948 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-23 01:47:31,948 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 01:47:31,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 01:47:31,949 INFO L85 PathProgramCache]: Analyzing trace with hash 714072948, now seen corresponding path program 1 times [2022-11-23 01:47:31,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 01:47:31,949 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [408160504] [2022-11-23 01:47:31,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 01:47:31,950 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 01:47:31,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:47:32,103 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 01:47:32,104 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 01:47:32,104 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [408160504] [2022-11-23 01:47:32,104 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [408160504] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 01:47:32,105 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 01:47:32,105 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 01:47:32,105 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [568273292] [2022-11-23 01:47:32,105 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 01:47:32,107 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 01:47:32,107 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 01:47:32,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 01:47:32,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 01:47:32,108 INFO L87 Difference]: Start difference. First operand 844 states and 1152 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 01:47:32,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 01:47:32,309 INFO L93 Difference]: Finished difference Result 1471 states and 2026 transitions. [2022-11-23 01:47:32,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 01:47:32,309 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 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 64 [2022-11-23 01:47:32,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 01:47:32,315 INFO L225 Difference]: With dead ends: 1471 [2022-11-23 01:47:32,315 INFO L226 Difference]: Without dead ends: 1228 [2022-11-23 01:47:32,321 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 [2022-11-23 01:47:32,323 INFO L413 NwaCegarLoop]: 1036 mSDtfsCounter, 549 mSDsluCounter, 647 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 549 SdHoareTripleChecker+Valid, 1683 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 01:47:32,323 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [549 Valid, 1683 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 01:47:32,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1228 states. [2022-11-23 01:47:32,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1228 to 1224. [2022-11-23 01:47:32,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1224 states, 1222 states have (on average 1.3543371522094927) internal successors, (1655), 1223 states have internal predecessors, (1655), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 01:47:32,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1224 states to 1224 states and 1655 transitions. [2022-11-23 01:47:32,413 INFO L78 Accepts]: Start accepts. Automaton has 1224 states and 1655 transitions. Word has length 64 [2022-11-23 01:47:32,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 01:47:32,413 INFO L495 AbstractCegarLoop]: Abstraction has 1224 states and 1655 transitions. [2022-11-23 01:47:32,414 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 01:47:32,415 INFO L276 IsEmpty]: Start isEmpty. Operand 1224 states and 1655 transitions. [2022-11-23 01:47:32,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-11-23 01:47:32,422 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 01:47:32,423 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] [2022-11-23 01:47:32,423 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-23 01:47:32,424 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 01:47:32,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 01:47:32,433 INFO L85 PathProgramCache]: Analyzing trace with hash -1908609010, now seen corresponding path program 1 times [2022-11-23 01:47:32,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 01:47:32,434 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [274890464] [2022-11-23 01:47:32,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 01:47:32,434 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 01:47:32,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:47:32,714 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 01:47:32,714 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 01:47:32,714 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [274890464] [2022-11-23 01:47:32,716 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [274890464] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 01:47:32,716 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 01:47:32,717 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-23 01:47:32,717 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1017071106] [2022-11-23 01:47:32,717 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 01:47:32,719 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 01:47:32,719 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 01:47:32,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 01:47:32,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-23 01:47:32,720 INFO L87 Difference]: Start difference. First operand 1224 states and 1655 transitions. Second operand has 5 states, 5 states have (on average 12.8) internal successors, (64), 4 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 01:47:33,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 01:47:33,423 INFO L93 Difference]: Finished difference Result 2482 states and 3457 transitions. [2022-11-23 01:47:33,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-23 01:47:33,424 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 4 states have internal predecessors, (64), 0 states have call successors, (0), 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 64 [2022-11-23 01:47:33,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 01:47:33,429 INFO L225 Difference]: With dead ends: 2482 [2022-11-23 01:47:33,430 INFO L226 Difference]: Without dead ends: 1483 [2022-11-23 01:47:33,431 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-23 01:47:33,432 INFO L413 NwaCegarLoop]: 438 mSDtfsCounter, 2610 mSDsluCounter, 137 mSDsCounter, 0 mSdLazyCounter, 404 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2610 SdHoareTripleChecker+Valid, 575 SdHoareTripleChecker+Invalid, 416 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 404 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-23 01:47:33,433 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2610 Valid, 575 Invalid, 416 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 404 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-23 01:47:33,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1483 states. [2022-11-23 01:47:33,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1483 to 1481. [2022-11-23 01:47:33,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1481 states, 1479 states have (on average 1.3955375253549696) internal successors, (2064), 1480 states have internal predecessors, (2064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 01:47:33,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1481 states to 1481 states and 2064 transitions. [2022-11-23 01:47:33,549 INFO L78 Accepts]: Start accepts. Automaton has 1481 states and 2064 transitions. Word has length 64 [2022-11-23 01:47:33,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 01:47:33,549 INFO L495 AbstractCegarLoop]: Abstraction has 1481 states and 2064 transitions. [2022-11-23 01:47:33,549 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 4 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 01:47:33,550 INFO L276 IsEmpty]: Start isEmpty. Operand 1481 states and 2064 transitions. [2022-11-23 01:47:33,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-11-23 01:47:33,552 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 01:47:33,552 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] [2022-11-23 01:47:33,552 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-23 01:47:33,553 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 01:47:33,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 01:47:33,553 INFO L85 PathProgramCache]: Analyzing trace with hash 1292035188, now seen corresponding path program 1 times [2022-11-23 01:47:33,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 01:47:33,554 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [122146112] [2022-11-23 01:47:33,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 01:47:33,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 01:47:33,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:47:33,653 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 01:47:33,653 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 01:47:33,653 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [122146112] [2022-11-23 01:47:33,654 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [122146112] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 01:47:33,654 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 01:47:33,654 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 01:47:33,654 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1949552543] [2022-11-23 01:47:33,655 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 01:47:33,656 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 01:47:33,656 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 01:47:33,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 01:47:33,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 01:47:33,657 INFO L87 Difference]: Start difference. First operand 1481 states and 2064 transitions. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 01:47:33,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 01:47:33,921 INFO L93 Difference]: Finished difference Result 2949 states and 4174 transitions. [2022-11-23 01:47:33,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 01:47:33,922 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 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 65 [2022-11-23 01:47:33,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 01:47:33,932 INFO L225 Difference]: With dead ends: 2949 [2022-11-23 01:47:33,932 INFO L226 Difference]: Without dead ends: 2074 [2022-11-23 01:47:33,934 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 [2022-11-23 01:47:33,944 INFO L413 NwaCegarLoop]: 948 mSDtfsCounter, 578 mSDsluCounter, 536 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 578 SdHoareTripleChecker+Valid, 1484 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-23 01:47:33,946 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [578 Valid, 1484 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 01:47:33,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2074 states. [2022-11-23 01:47:34,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2074 to 2068. [2022-11-23 01:47:34,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2068 states, 2066 states have (on average 1.3799612778315586) internal successors, (2851), 2067 states have internal predecessors, (2851), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 01:47:34,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2068 states to 2068 states and 2851 transitions. [2022-11-23 01:47:34,190 INFO L78 Accepts]: Start accepts. Automaton has 2068 states and 2851 transitions. Word has length 65 [2022-11-23 01:47:34,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 01:47:34,192 INFO L495 AbstractCegarLoop]: Abstraction has 2068 states and 2851 transitions. [2022-11-23 01:47:34,192 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 01:47:34,192 INFO L276 IsEmpty]: Start isEmpty. Operand 2068 states and 2851 transitions. [2022-11-23 01:47:34,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-11-23 01:47:34,195 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 01:47:34,195 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] [2022-11-23 01:47:34,195 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-23 01:47:34,196 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 01:47:34,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 01:47:34,198 INFO L85 PathProgramCache]: Analyzing trace with hash 1184582392, now seen corresponding path program 1 times [2022-11-23 01:47:34,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 01:47:34,198 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1033798151] [2022-11-23 01:47:34,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 01:47:34,199 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 01:47:34,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:47:34,281 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 01:47:34,281 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 01:47:34,281 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1033798151] [2022-11-23 01:47:34,282 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1033798151] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 01:47:34,282 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 01:47:34,282 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 01:47:34,282 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2121734190] [2022-11-23 01:47:34,282 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 01:47:34,283 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 01:47:34,283 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 01:47:34,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 01:47:34,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 01:47:34,284 INFO L87 Difference]: Start difference. First operand 2068 states and 2851 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 01:47:34,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 01:47:34,622 INFO L93 Difference]: Finished difference Result 4442 states and 6243 transitions. [2022-11-23 01:47:34,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 01:47:34,623 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 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 66 [2022-11-23 01:47:34,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 01:47:34,633 INFO L225 Difference]: With dead ends: 4442 [2022-11-23 01:47:34,633 INFO L226 Difference]: Without dead ends: 3159 [2022-11-23 01:47:34,635 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 [2022-11-23 01:47:34,635 INFO L413 NwaCegarLoop]: 903 mSDtfsCounter, 396 mSDsluCounter, 538 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 396 SdHoareTripleChecker+Valid, 1441 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-23 01:47:34,636 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [396 Valid, 1441 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 01:47:34,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3159 states. [2022-11-23 01:47:34,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3159 to 3155. [2022-11-23 01:47:34,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3155 states, 3153 states have (on average 1.3799555978433238) internal successors, (4351), 3154 states have internal predecessors, (4351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 01:47:34,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3155 states to 3155 states and 4351 transitions. [2022-11-23 01:47:34,927 INFO L78 Accepts]: Start accepts. Automaton has 3155 states and 4351 transitions. Word has length 66 [2022-11-23 01:47:34,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 01:47:34,927 INFO L495 AbstractCegarLoop]: Abstraction has 3155 states and 4351 transitions. [2022-11-23 01:47:34,928 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 01:47:34,928 INFO L276 IsEmpty]: Start isEmpty. Operand 3155 states and 4351 transitions. [2022-11-23 01:47:34,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-11-23 01:47:34,932 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 01:47:34,933 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] [2022-11-23 01:47:34,933 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-23 01:47:34,934 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 01:47:34,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 01:47:34,940 INFO L85 PathProgramCache]: Analyzing trace with hash -237880367, now seen corresponding path program 1 times [2022-11-23 01:47:34,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 01:47:34,940 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1254247133] [2022-11-23 01:47:34,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 01:47:34,941 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 01:47:34,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:47:35,130 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 01:47:35,131 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 01:47:35,131 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1254247133] [2022-11-23 01:47:35,131 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1254247133] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 01:47:35,131 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 01:47:35,131 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-23 01:47:35,132 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [118680688] [2022-11-23 01:47:35,132 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 01:47:35,133 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 01:47:35,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 01:47:35,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 01:47:35,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-23 01:47:35,134 INFO L87 Difference]: Start difference. First operand 3155 states and 4351 transitions. Second operand has 5 states, 5 states have (on average 13.2) internal successors, (66), 4 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 01:47:35,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 01:47:35,939 INFO L93 Difference]: Finished difference Result 6802 states and 9465 transitions. [2022-11-23 01:47:35,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-23 01:47:35,939 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 4 states have internal predecessors, (66), 0 states have call successors, (0), 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 66 [2022-11-23 01:47:35,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 01:47:35,952 INFO L225 Difference]: With dead ends: 6802 [2022-11-23 01:47:35,952 INFO L226 Difference]: Without dead ends: 3982 [2022-11-23 01:47:35,956 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-23 01:47:35,957 INFO L413 NwaCegarLoop]: 383 mSDtfsCounter, 2282 mSDsluCounter, 139 mSDsCounter, 0 mSdLazyCounter, 354 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2282 SdHoareTripleChecker+Valid, 522 SdHoareTripleChecker+Invalid, 371 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 354 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-23 01:47:35,957 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2282 Valid, 522 Invalid, 371 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 354 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-23 01:47:35,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3982 states. [2022-11-23 01:47:36,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3982 to 3966. [2022-11-23 01:47:36,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3966 states, 3964 states have (on average 1.3816851664984864) internal successors, (5477), 3965 states have internal predecessors, (5477), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 01:47:36,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3966 states to 3966 states and 5477 transitions. [2022-11-23 01:47:36,334 INFO L78 Accepts]: Start accepts. Automaton has 3966 states and 5477 transitions. Word has length 66 [2022-11-23 01:47:36,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 01:47:36,334 INFO L495 AbstractCegarLoop]: Abstraction has 3966 states and 5477 transitions. [2022-11-23 01:47:36,334 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 4 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 01:47:36,335 INFO L276 IsEmpty]: Start isEmpty. Operand 3966 states and 5477 transitions. [2022-11-23 01:47:36,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-11-23 01:47:36,339 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 01:47:36,339 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] [2022-11-23 01:47:36,339 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-23 01:47:36,339 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 01:47:36,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 01:47:36,340 INFO L85 PathProgramCache]: Analyzing trace with hash 426192215, now seen corresponding path program 1 times [2022-11-23 01:47:36,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 01:47:36,340 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [500167092] [2022-11-23 01:47:36,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 01:47:36,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 01:47:36,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:47:36,493 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 01:47:36,493 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 01:47:36,494 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [500167092] [2022-11-23 01:47:36,494 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [500167092] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 01:47:36,494 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 01:47:36,494 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-23 01:47:36,494 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [778500928] [2022-11-23 01:47:36,495 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 01:47:36,495 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-23 01:47:36,495 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 01:47:36,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-23 01:47:36,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-23 01:47:36,496 INFO L87 Difference]: Start difference. First operand 3966 states and 5477 transitions. Second operand has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 6 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 01:47:38,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 01:47:38,582 INFO L93 Difference]: Finished difference Result 13636 states and 19360 transitions. [2022-11-23 01:47:38,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-23 01:47:38,583 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 6 states have internal predecessors, (67), 0 states have call successors, (0), 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 67 [2022-11-23 01:47:38,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 01:47:38,623 INFO L225 Difference]: With dead ends: 13636 [2022-11-23 01:47:38,623 INFO L226 Difference]: Without dead ends: 12452 [2022-11-23 01:47:38,628 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2022-11-23 01:47:38,629 INFO L413 NwaCegarLoop]: 394 mSDtfsCounter, 4934 mSDsluCounter, 635 mSDsCounter, 0 mSdLazyCounter, 734 mSolverCounterSat, 100 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4934 SdHoareTripleChecker+Valid, 1029 SdHoareTripleChecker+Invalid, 834 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 100 IncrementalHoareTripleChecker+Valid, 734 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-23 01:47:38,629 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4934 Valid, 1029 Invalid, 834 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [100 Valid, 734 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-23 01:47:38,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12452 states. [2022-11-23 01:47:39,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12452 to 3990. [2022-11-23 01:47:39,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3990 states, 3988 states have (on average 1.381394182547643) internal successors, (5509), 3989 states have internal predecessors, (5509), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 01:47:39,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3990 states to 3990 states and 5509 transitions. [2022-11-23 01:47:39,227 INFO L78 Accepts]: Start accepts. Automaton has 3990 states and 5509 transitions. Word has length 67 [2022-11-23 01:47:39,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 01:47:39,227 INFO L495 AbstractCegarLoop]: Abstraction has 3990 states and 5509 transitions. [2022-11-23 01:47:39,228 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 6 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 01:47:39,228 INFO L276 IsEmpty]: Start isEmpty. Operand 3990 states and 5509 transitions. [2022-11-23 01:47:39,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-11-23 01:47:39,235 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 01:47:39,235 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] [2022-11-23 01:47:39,236 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-23 01:47:39,236 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 01:47:39,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 01:47:39,236 INFO L85 PathProgramCache]: Analyzing trace with hash -889016011, now seen corresponding path program 1 times [2022-11-23 01:47:39,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 01:47:39,237 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [938462418] [2022-11-23 01:47:39,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 01:47:39,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 01:47:39,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:47:39,403 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 01:47:39,403 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 01:47:39,403 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [938462418] [2022-11-23 01:47:39,404 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [938462418] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 01:47:39,404 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 01:47:39,404 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-23 01:47:39,404 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [453964153] [2022-11-23 01:47:39,404 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 01:47:39,405 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 01:47:39,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 01:47:39,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 01:47:39,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-23 01:47:39,406 INFO L87 Difference]: Start difference. First operand 3990 states and 5509 transitions. Second operand has 5 states, 5 states have (on average 13.4) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 01:47:40,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 01:47:40,597 INFO L93 Difference]: Finished difference Result 9015 states and 12509 transitions. [2022-11-23 01:47:40,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-23 01:47:40,601 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 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 67 [2022-11-23 01:47:40,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 01:47:40,625 INFO L225 Difference]: With dead ends: 9015 [2022-11-23 01:47:40,631 INFO L226 Difference]: Without dead ends: 5335 [2022-11-23 01:47:40,636 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-23 01:47:40,637 INFO L413 NwaCegarLoop]: 397 mSDtfsCounter, 2348 mSDsluCounter, 133 mSDsCounter, 0 mSdLazyCounter, 344 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2348 SdHoareTripleChecker+Valid, 530 SdHoareTripleChecker+Invalid, 349 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 344 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-23 01:47:40,637 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2348 Valid, 530 Invalid, 349 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 344 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-23 01:47:40,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5335 states. [2022-11-23 01:47:41,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5335 to 3990. [2022-11-23 01:47:41,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3990 states, 3988 states have (on average 1.376629889669007) internal successors, (5490), 3989 states have internal predecessors, (5490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 01:47:41,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3990 states to 3990 states and 5490 transitions. [2022-11-23 01:47:41,064 INFO L78 Accepts]: Start accepts. Automaton has 3990 states and 5490 transitions. Word has length 67 [2022-11-23 01:47:41,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 01:47:41,065 INFO L495 AbstractCegarLoop]: Abstraction has 3990 states and 5490 transitions. [2022-11-23 01:47:41,065 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 01:47:41,065 INFO L276 IsEmpty]: Start isEmpty. Operand 3990 states and 5490 transitions. [2022-11-23 01:47:41,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-11-23 01:47:41,070 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 01:47:41,070 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] [2022-11-23 01:47:41,070 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-23 01:47:41,070 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 01:47:41,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 01:47:41,071 INFO L85 PathProgramCache]: Analyzing trace with hash -132013379, now seen corresponding path program 1 times [2022-11-23 01:47:41,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 01:47:41,071 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [11433725] [2022-11-23 01:47:41,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 01:47:41,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 01:47:41,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:47:41,171 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 01:47:41,171 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 01:47:41,172 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [11433725] [2022-11-23 01:47:41,172 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [11433725] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 01:47:41,172 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 01:47:41,172 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-23 01:47:41,172 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1700719059] [2022-11-23 01:47:41,173 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 01:47:41,173 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 01:47:41,173 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 01:47:41,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 01:47:41,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-23 01:47:41,174 INFO L87 Difference]: Start difference. First operand 3990 states and 5490 transitions. Second operand has 5 states, 5 states have (on average 13.6) internal successors, (68), 4 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 01:47:42,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 01:47:42,350 INFO L93 Difference]: Finished difference Result 8904 states and 12251 transitions. [2022-11-23 01:47:42,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-23 01:47:42,351 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 4 states have internal predecessors, (68), 0 states have call successors, (0), 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 68 [2022-11-23 01:47:42,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 01:47:42,360 INFO L225 Difference]: With dead ends: 8904 [2022-11-23 01:47:42,360 INFO L226 Difference]: Without dead ends: 5195 [2022-11-23 01:47:42,364 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-23 01:47:42,366 INFO L413 NwaCegarLoop]: 370 mSDtfsCounter, 2066 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 334 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2066 SdHoareTripleChecker+Valid, 487 SdHoareTripleChecker+Invalid, 371 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 334 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-23 01:47:42,366 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2066 Valid, 487 Invalid, 371 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 334 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-23 01:47:42,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5195 states. [2022-11-23 01:47:43,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5195 to 5173. [2022-11-23 01:47:43,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5173 states, 5171 states have (on average 1.3612454070779347) internal successors, (7039), 5172 states have internal predecessors, (7039), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 01:47:43,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5173 states to 5173 states and 7039 transitions. [2022-11-23 01:47:43,239 INFO L78 Accepts]: Start accepts. Automaton has 5173 states and 7039 transitions. Word has length 68 [2022-11-23 01:47:43,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 01:47:43,240 INFO L495 AbstractCegarLoop]: Abstraction has 5173 states and 7039 transitions. [2022-11-23 01:47:43,241 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 4 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 01:47:43,241 INFO L276 IsEmpty]: Start isEmpty. Operand 5173 states and 7039 transitions. [2022-11-23 01:47:43,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-11-23 01:47:43,245 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 01:47:43,246 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] [2022-11-23 01:47:43,246 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-23 01:47:43,246 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 01:47:43,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 01:47:43,247 INFO L85 PathProgramCache]: Analyzing trace with hash -416949424, now seen corresponding path program 1 times [2022-11-23 01:47:43,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 01:47:43,247 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1023391989] [2022-11-23 01:47:43,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 01:47:43,248 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 01:47:43,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:47:43,444 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 01:47:43,444 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 01:47:43,444 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1023391989] [2022-11-23 01:47:43,445 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1023391989] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 01:47:43,445 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 01:47:43,445 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-23 01:47:43,445 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [104473211] [2022-11-23 01:47:43,445 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 01:47:43,446 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-23 01:47:43,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 01:47:43,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-23 01:47:43,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-23 01:47:43,446 INFO L87 Difference]: Start difference. First operand 5173 states and 7039 transitions. Second operand has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 6 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 01:47:46,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 01:47:46,415 INFO L93 Difference]: Finished difference Result 18043 states and 24835 transitions. [2022-11-23 01:47:46,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-23 01:47:46,417 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 6 states have internal predecessors, (68), 0 states have call successors, (0), 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 68 [2022-11-23 01:47:46,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 01:47:46,445 INFO L225 Difference]: With dead ends: 18043 [2022-11-23 01:47:46,445 INFO L226 Difference]: Without dead ends: 15526 [2022-11-23 01:47:46,452 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2022-11-23 01:47:46,452 INFO L413 NwaCegarLoop]: 402 mSDtfsCounter, 4155 mSDsluCounter, 540 mSDsCounter, 0 mSdLazyCounter, 582 mSolverCounterSat, 103 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4155 SdHoareTripleChecker+Valid, 942 SdHoareTripleChecker+Invalid, 685 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 103 IncrementalHoareTripleChecker+Valid, 582 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-23 01:47:46,453 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4155 Valid, 942 Invalid, 685 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [103 Valid, 582 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-23 01:47:46,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15526 states. [2022-11-23 01:47:47,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15526 to 5201. [2022-11-23 01:47:47,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5201 states, 5199 states have (on average 1.3608386228120792) internal successors, (7075), 5200 states have internal predecessors, (7075), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 01:47:47,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5201 states to 5201 states and 7075 transitions. [2022-11-23 01:47:47,204 INFO L78 Accepts]: Start accepts. Automaton has 5201 states and 7075 transitions. Word has length 68 [2022-11-23 01:47:47,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 01:47:47,205 INFO L495 AbstractCegarLoop]: Abstraction has 5201 states and 7075 transitions. [2022-11-23 01:47:47,205 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 6 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 01:47:47,205 INFO L276 IsEmpty]: Start isEmpty. Operand 5201 states and 7075 transitions. [2022-11-23 01:47:47,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-11-23 01:47:47,210 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 01:47:47,210 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] [2022-11-23 01:47:47,210 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-23 01:47:47,211 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 01:47:47,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 01:47:47,211 INFO L85 PathProgramCache]: Analyzing trace with hash -1441651372, now seen corresponding path program 1 times [2022-11-23 01:47:47,211 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 01:47:47,211 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2056050396] [2022-11-23 01:47:47,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 01:47:47,212 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 01:47:47,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:47:47,388 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 01:47:47,389 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 01:47:47,389 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2056050396] [2022-11-23 01:47:47,389 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2056050396] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 01:47:47,389 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 01:47:47,389 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-23 01:47:47,390 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [611539433] [2022-11-23 01:47:47,390 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 01:47:47,390 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-23 01:47:47,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 01:47:47,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-23 01:47:47,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-23 01:47:47,391 INFO L87 Difference]: Start difference. First operand 5201 states and 7075 transitions. Second operand has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 6 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 01:47:51,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 01:47:51,842 INFO L93 Difference]: Finished difference Result 22119 states and 30848 transitions. [2022-11-23 01:47:51,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-23 01:47:51,845 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 6 states have internal predecessors, (69), 0 states have call successors, (0), 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 69 [2022-11-23 01:47:51,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 01:47:51,880 INFO L225 Difference]: With dead ends: 22119 [2022-11-23 01:47:51,880 INFO L226 Difference]: Without dead ends: 19883 [2022-11-23 01:47:51,886 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2022-11-23 01:47:51,887 INFO L413 NwaCegarLoop]: 393 mSDtfsCounter, 4352 mSDsluCounter, 621 mSDsCounter, 0 mSdLazyCounter, 679 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4352 SdHoareTripleChecker+Valid, 1014 SdHoareTripleChecker+Invalid, 778 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 679 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-23 01:47:51,887 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4352 Valid, 1014 Invalid, 778 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [99 Valid, 679 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-23 01:47:51,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19883 states. [2022-11-23 01:47:53,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19883 to 5298. [2022-11-23 01:47:53,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5298 states, 5296 states have (on average 1.3602719033232629) internal successors, (7204), 5297 states have internal predecessors, (7204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 01:47:53,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5298 states to 5298 states and 7204 transitions. [2022-11-23 01:47:53,024 INFO L78 Accepts]: Start accepts. Automaton has 5298 states and 7204 transitions. Word has length 69 [2022-11-23 01:47:53,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 01:47:53,025 INFO L495 AbstractCegarLoop]: Abstraction has 5298 states and 7204 transitions. [2022-11-23 01:47:53,025 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 6 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 01:47:53,025 INFO L276 IsEmpty]: Start isEmpty. Operand 5298 states and 7204 transitions. [2022-11-23 01:47:53,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-11-23 01:47:53,030 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 01:47:53,030 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] [2022-11-23 01:47:53,031 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-23 01:47:53,031 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 01:47:53,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 01:47:53,031 INFO L85 PathProgramCache]: Analyzing trace with hash 756148337, now seen corresponding path program 1 times [2022-11-23 01:47:53,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 01:47:53,032 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1603049250] [2022-11-23 01:47:53,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 01:47:53,032 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 01:47:53,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:47:53,380 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 01:47:53,381 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 01:47:53,381 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1603049250] [2022-11-23 01:47:53,381 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1603049250] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 01:47:53,381 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 01:47:53,381 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-23 01:47:53,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [31446073] [2022-11-23 01:47:53,382 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 01:47:53,382 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-23 01:47:53,382 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 01:47:53,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-23 01:47:53,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-11-23 01:47:53,383 INFO L87 Difference]: Start difference. First operand 5298 states and 7204 transitions. Second operand has 10 states, 10 states have (on average 7.0) internal successors, (70), 9 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 01:47:58,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 01:47:58,754 INFO L93 Difference]: Finished difference Result 18360 states and 25279 transitions. [2022-11-23 01:47:58,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-23 01:47:58,754 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 7.0) internal successors, (70), 9 states have internal predecessors, (70), 0 states have call successors, (0), 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 70 [2022-11-23 01:47:58,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 01:47:58,783 INFO L225 Difference]: With dead ends: 18360 [2022-11-23 01:47:58,783 INFO L226 Difference]: Without dead ends: 16715 [2022-11-23 01:47:58,787 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 124 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=192, Invalid=510, Unknown=0, NotChecked=0, Total=702 [2022-11-23 01:47:58,788 INFO L413 NwaCegarLoop]: 561 mSDtfsCounter, 3010 mSDsluCounter, 2100 mSDsCounter, 0 mSdLazyCounter, 2163 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3010 SdHoareTripleChecker+Valid, 2661 SdHoareTripleChecker+Invalid, 2174 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 2163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-11-23 01:47:58,788 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3010 Valid, 2661 Invalid, 2174 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 2163 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-11-23 01:47:58,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16715 states. [2022-11-23 01:47:59,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16715 to 5298. [2022-11-23 01:47:59,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5298 states, 5296 states have (on average 1.3598942598187311) internal successors, (7202), 5297 states have internal predecessors, (7202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 01:47:59,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5298 states to 5298 states and 7202 transitions. [2022-11-23 01:47:59,845 INFO L78 Accepts]: Start accepts. Automaton has 5298 states and 7202 transitions. Word has length 70 [2022-11-23 01:47:59,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 01:47:59,845 INFO L495 AbstractCegarLoop]: Abstraction has 5298 states and 7202 transitions. [2022-11-23 01:47:59,845 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.0) internal successors, (70), 9 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 01:47:59,846 INFO L276 IsEmpty]: Start isEmpty. Operand 5298 states and 7202 transitions. [2022-11-23 01:47:59,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-11-23 01:47:59,851 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 01:47:59,851 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] [2022-11-23 01:47:59,851 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-23 01:47:59,852 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 01:47:59,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 01:47:59,852 INFO L85 PathProgramCache]: Analyzing trace with hash -223540144, now seen corresponding path program 1 times [2022-11-23 01:47:59,852 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 01:47:59,852 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [95565676] [2022-11-23 01:47:59,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 01:47:59,853 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 01:47:59,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:48:00,177 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 01:48:00,177 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 01:48:00,177 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [95565676] [2022-11-23 01:48:00,177 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [95565676] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 01:48:00,178 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 01:48:00,178 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-23 01:48:00,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1122649251] [2022-11-23 01:48:00,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 01:48:00,178 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-23 01:48:00,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 01:48:00,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-23 01:48:00,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-23 01:48:00,180 INFO L87 Difference]: Start difference. First operand 5298 states and 7202 transitions. Second operand has 9 states, 9 states have (on average 7.777777777777778) internal successors, (70), 8 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 01:48:04,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 01:48:04,563 INFO L93 Difference]: Finished difference Result 16196 states and 22583 transitions. [2022-11-23 01:48:04,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-23 01:48:04,564 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.777777777777778) internal successors, (70), 8 states have internal predecessors, (70), 0 states have call successors, (0), 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 70 [2022-11-23 01:48:04,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 01:48:04,579 INFO L225 Difference]: With dead ends: 16196 [2022-11-23 01:48:04,579 INFO L226 Difference]: Without dead ends: 13108 [2022-11-23 01:48:04,584 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=136, Invalid=326, Unknown=0, NotChecked=0, Total=462 [2022-11-23 01:48:04,584 INFO L413 NwaCegarLoop]: 478 mSDtfsCounter, 3468 mSDsluCounter, 1442 mSDsCounter, 0 mSdLazyCounter, 1390 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3468 SdHoareTripleChecker+Valid, 1920 SdHoareTripleChecker+Invalid, 1410 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 1390 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-23 01:48:04,585 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3468 Valid, 1920 Invalid, 1410 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 1390 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-23 01:48:04,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13108 states. [2022-11-23 01:48:05,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13108 to 5294. [2022-11-23 01:48:05,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5294 states, 5292 states have (on average 1.3594104308390023) internal successors, (7194), 5293 states have internal predecessors, (7194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 01:48:05,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5294 states to 5294 states and 7194 transitions. [2022-11-23 01:48:05,722 INFO L78 Accepts]: Start accepts. Automaton has 5294 states and 7194 transitions. Word has length 70 [2022-11-23 01:48:05,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 01:48:05,722 INFO L495 AbstractCegarLoop]: Abstraction has 5294 states and 7194 transitions. [2022-11-23 01:48:05,723 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.777777777777778) internal successors, (70), 8 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 01:48:05,723 INFO L276 IsEmpty]: Start isEmpty. Operand 5294 states and 7194 transitions. [2022-11-23 01:48:05,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-11-23 01:48:05,729 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 01:48:05,729 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] [2022-11-23 01:48:05,729 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-23 01:48:05,729 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 01:48:05,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 01:48:05,730 INFO L85 PathProgramCache]: Analyzing trace with hash 66854135, now seen corresponding path program 1 times [2022-11-23 01:48:05,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 01:48:05,730 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1662200603] [2022-11-23 01:48:05,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 01:48:05,730 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 01:48:05,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:48:06,467 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 01:48:06,467 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 01:48:06,467 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1662200603] [2022-11-23 01:48:06,467 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1662200603] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 01:48:06,467 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 01:48:06,467 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-23 01:48:06,467 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2064676723] [2022-11-23 01:48:06,468 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 01:48:06,468 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-23 01:48:06,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 01:48:06,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-23 01:48:06,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2022-11-23 01:48:06,469 INFO L87 Difference]: Start difference. First operand 5294 states and 7194 transitions. Second operand has 12 states, 12 states have (on average 5.916666666666667) internal successors, (71), 12 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 01:48:13,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 01:48:13,497 INFO L93 Difference]: Finished difference Result 24800 states and 34783 transitions. [2022-11-23 01:48:13,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-23 01:48:13,498 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.916666666666667) internal successors, (71), 12 states have internal predecessors, (71), 0 states have call successors, (0), 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 71 [2022-11-23 01:48:13,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 01:48:13,518 INFO L225 Difference]: With dead ends: 24800 [2022-11-23 01:48:13,518 INFO L226 Difference]: Without dead ends: 21588 [2022-11-23 01:48:13,525 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=156, Invalid=444, Unknown=0, NotChecked=0, Total=600 [2022-11-23 01:48:13,525 INFO L413 NwaCegarLoop]: 806 mSDtfsCounter, 3043 mSDsluCounter, 5132 mSDsCounter, 0 mSdLazyCounter, 985 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3043 SdHoareTripleChecker+Valid, 5938 SdHoareTripleChecker+Invalid, 1006 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 985 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-23 01:48:13,526 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3043 Valid, 5938 Invalid, 1006 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 985 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-23 01:48:13,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21588 states. [2022-11-23 01:48:14,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21588 to 5154. [2022-11-23 01:48:14,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5154 states, 5152 states have (on average 1.361024844720497) internal successors, (7012), 5153 states have internal predecessors, (7012), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 01:48:14,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5154 states to 5154 states and 7012 transitions. [2022-11-23 01:48:14,811 INFO L78 Accepts]: Start accepts. Automaton has 5154 states and 7012 transitions. Word has length 71 [2022-11-23 01:48:14,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 01:48:14,812 INFO L495 AbstractCegarLoop]: Abstraction has 5154 states and 7012 transitions. [2022-11-23 01:48:14,812 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.916666666666667) internal successors, (71), 12 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 01:48:14,812 INFO L276 IsEmpty]: Start isEmpty. Operand 5154 states and 7012 transitions. [2022-11-23 01:48:14,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-11-23 01:48:14,817 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 01:48:14,817 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] [2022-11-23 01:48:14,818 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-23 01:48:14,818 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 01:48:14,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 01:48:14,818 INFO L85 PathProgramCache]: Analyzing trace with hash -1113625680, now seen corresponding path program 1 times [2022-11-23 01:48:14,818 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 01:48:14,819 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1040666415] [2022-11-23 01:48:14,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 01:48:14,819 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 01:48:14,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:48:15,085 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 01:48:15,085 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 01:48:15,085 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1040666415] [2022-11-23 01:48:15,085 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1040666415] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 01:48:15,086 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 01:48:15,086 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-23 01:48:15,086 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [747580045] [2022-11-23 01:48:15,086 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 01:48:15,086 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-23 01:48:15,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 01:48:15,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-23 01:48:15,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-11-23 01:48:15,087 INFO L87 Difference]: Start difference. First operand 5154 states and 7012 transitions. Second operand has 9 states, 9 states have (on average 7.888888888888889) internal successors, (71), 8 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 01:48:20,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 01:48:20,431 INFO L93 Difference]: Finished difference Result 16114 states and 22496 transitions. [2022-11-23 01:48:20,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-23 01:48:20,431 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.888888888888889) internal successors, (71), 8 states have internal predecessors, (71), 0 states have call successors, (0), 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 71 [2022-11-23 01:48:20,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 01:48:20,444 INFO L225 Difference]: With dead ends: 16114 [2022-11-23 01:48:20,444 INFO L226 Difference]: Without dead ends: 12984 [2022-11-23 01:48:20,449 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2022-11-23 01:48:20,449 INFO L413 NwaCegarLoop]: 457 mSDtfsCounter, 3450 mSDsluCounter, 1319 mSDsCounter, 0 mSdLazyCounter, 1239 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3450 SdHoareTripleChecker+Valid, 1776 SdHoareTripleChecker+Invalid, 1263 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 1239 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-23 01:48:20,450 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3450 Valid, 1776 Invalid, 1263 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 1239 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-23 01:48:20,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12984 states. [2022-11-23 01:48:21,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12984 to 5130. [2022-11-23 01:48:21,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5130 states, 5128 states have (on average 1.359789391575663) internal successors, (6973), 5129 states have internal predecessors, (6973), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 01:48:21,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5130 states to 5130 states and 6973 transitions. [2022-11-23 01:48:21,800 INFO L78 Accepts]: Start accepts. Automaton has 5130 states and 6973 transitions. Word has length 71 [2022-11-23 01:48:21,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 01:48:21,800 INFO L495 AbstractCegarLoop]: Abstraction has 5130 states and 6973 transitions. [2022-11-23 01:48:21,800 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.888888888888889) internal successors, (71), 8 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 01:48:21,800 INFO L276 IsEmpty]: Start isEmpty. Operand 5130 states and 6973 transitions. [2022-11-23 01:48:21,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-11-23 01:48:21,805 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 01:48:21,805 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] [2022-11-23 01:48:21,805 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-23 01:48:21,806 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 01:48:21,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 01:48:21,806 INFO L85 PathProgramCache]: Analyzing trace with hash 468124592, now seen corresponding path program 1 times [2022-11-23 01:48:21,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 01:48:21,806 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [205559288] [2022-11-23 01:48:21,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 01:48:21,807 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 01:48:21,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:48:22,436 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 01:48:22,436 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 01:48:22,436 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [205559288] [2022-11-23 01:48:22,436 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [205559288] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 01:48:22,436 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 01:48:22,436 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-11-23 01:48:22,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [195299722] [2022-11-23 01:48:22,437 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 01:48:22,437 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-23 01:48:22,437 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 01:48:22,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-23 01:48:22,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2022-11-23 01:48:22,438 INFO L87 Difference]: Start difference. First operand 5130 states and 6973 transitions. Second operand has 13 states, 13 states have (on average 5.461538461538462) internal successors, (71), 13 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 01:48:33,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 01:48:33,432 INFO L93 Difference]: Finished difference Result 30776 states and 43185 transitions. [2022-11-23 01:48:33,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-23 01:48:33,433 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.461538461538462) internal successors, (71), 13 states have internal predecessors, (71), 0 states have call successors, (0), 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 71 [2022-11-23 01:48:33,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 01:48:33,460 INFO L225 Difference]: With dead ends: 30776 [2022-11-23 01:48:33,460 INFO L226 Difference]: Without dead ends: 27490 [2022-11-23 01:48:33,466 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 112 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=197, Invalid=559, Unknown=0, NotChecked=0, Total=756 [2022-11-23 01:48:33,466 INFO L413 NwaCegarLoop]: 807 mSDtfsCounter, 5078 mSDsluCounter, 3854 mSDsCounter, 0 mSdLazyCounter, 539 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5078 SdHoareTripleChecker+Valid, 4661 SdHoareTripleChecker+Invalid, 557 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 539 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-23 01:48:33,466 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5078 Valid, 4661 Invalid, 557 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 539 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-23 01:48:33,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27490 states. [2022-11-23 01:48:35,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27490 to 4920. [2022-11-23 01:48:35,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4920 states, 4918 states have (on average 1.3621390809272063) internal successors, (6699), 4919 states have internal predecessors, (6699), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 01:48:35,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4920 states to 4920 states and 6699 transitions. [2022-11-23 01:48:35,238 INFO L78 Accepts]: Start accepts. Automaton has 4920 states and 6699 transitions. Word has length 71 [2022-11-23 01:48:35,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 01:48:35,238 INFO L495 AbstractCegarLoop]: Abstraction has 4920 states and 6699 transitions. [2022-11-23 01:48:35,239 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.461538461538462) internal successors, (71), 13 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 01:48:35,239 INFO L276 IsEmpty]: Start isEmpty. Operand 4920 states and 6699 transitions. [2022-11-23 01:48:35,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-11-23 01:48:35,243 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 01:48:35,243 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] [2022-11-23 01:48:35,243 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-23 01:48:35,244 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 01:48:35,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 01:48:35,244 INFO L85 PathProgramCache]: Analyzing trace with hash 525454090, now seen corresponding path program 1 times [2022-11-23 01:48:35,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 01:48:35,244 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [322814119] [2022-11-23 01:48:35,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 01:48:35,245 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 01:48:35,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:48:35,419 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 01:48:35,420 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 01:48:35,420 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [322814119] [2022-11-23 01:48:35,420 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [322814119] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 01:48:35,420 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 01:48:35,420 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-23 01:48:35,421 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1906238560] [2022-11-23 01:48:35,421 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 01:48:35,421 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-23 01:48:35,421 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 01:48:35,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-23 01:48:35,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-23 01:48:35,422 INFO L87 Difference]: Start difference. First operand 4920 states and 6699 transitions. Second operand has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 6 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 01:48:43,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 01:48:43,901 INFO L93 Difference]: Finished difference Result 19002 states and 26420 transitions. [2022-11-23 01:48:43,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-23 01:48:43,901 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 6 states have internal predecessors, (71), 0 states have call successors, (0), 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 71 [2022-11-23 01:48:43,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 01:48:43,919 INFO L225 Difference]: With dead ends: 19002 [2022-11-23 01:48:43,919 INFO L226 Difference]: Without dead ends: 16930 [2022-11-23 01:48:43,923 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2022-11-23 01:48:43,923 INFO L413 NwaCegarLoop]: 406 mSDtfsCounter, 2913 mSDsluCounter, 670 mSDsCounter, 0 mSdLazyCounter, 773 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2913 SdHoareTripleChecker+Valid, 1076 SdHoareTripleChecker+Invalid, 848 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 773 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-23 01:48:43,923 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2913 Valid, 1076 Invalid, 848 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 773 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-23 01:48:43,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16930 states. [2022-11-23 01:48:45,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16930 to 4991. [2022-11-23 01:48:45,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4991 states, 4989 states have (on average 1.3625977149729405) internal successors, (6798), 4990 states have internal predecessors, (6798), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 01:48:45,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4991 states to 4991 states and 6798 transitions. [2022-11-23 01:48:45,743 INFO L78 Accepts]: Start accepts. Automaton has 4991 states and 6798 transitions. Word has length 71 [2022-11-23 01:48:45,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 01:48:45,744 INFO L495 AbstractCegarLoop]: Abstraction has 4991 states and 6798 transitions. [2022-11-23 01:48:45,744 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 6 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 01:48:45,744 INFO L276 IsEmpty]: Start isEmpty. Operand 4991 states and 6798 transitions. [2022-11-23 01:48:45,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-11-23 01:48:45,749 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 01:48:45,749 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] [2022-11-23 01:48:45,749 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-23 01:48:45,749 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 01:48:45,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 01:48:45,750 INFO L85 PathProgramCache]: Analyzing trace with hash 1951824160, now seen corresponding path program 1 times [2022-11-23 01:48:45,750 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 01:48:45,750 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [109958822] [2022-11-23 01:48:45,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 01:48:45,751 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 01:48:45,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:48:46,497 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 01:48:46,497 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 01:48:46,497 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [109958822] [2022-11-23 01:48:46,498 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [109958822] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 01:48:46,498 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 01:48:46,498 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-11-23 01:48:46,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1319396955] [2022-11-23 01:48:46,498 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 01:48:46,498 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-23 01:48:46,499 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 01:48:46,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-23 01:48:46,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2022-11-23 01:48:46,499 INFO L87 Difference]: Start difference. First operand 4991 states and 6798 transitions. Second operand has 13 states, 13 states have (on average 5.538461538461538) internal successors, (72), 13 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 01:48:59,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 01:48:59,852 INFO L93 Difference]: Finished difference Result 27528 states and 38714 transitions. [2022-11-23 01:48:59,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-23 01:48:59,853 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.538461538461538) internal successors, (72), 13 states have internal predecessors, (72), 0 states have call successors, (0), 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 72 [2022-11-23 01:48:59,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 01:48:59,879 INFO L225 Difference]: With dead ends: 27528 [2022-11-23 01:48:59,879 INFO L226 Difference]: Without dead ends: 24361 [2022-11-23 01:48:59,885 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=167, Invalid=483, Unknown=0, NotChecked=0, Total=650 [2022-11-23 01:48:59,886 INFO L413 NwaCegarLoop]: 850 mSDtfsCounter, 3665 mSDsluCounter, 4786 mSDsCounter, 0 mSdLazyCounter, 700 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3665 SdHoareTripleChecker+Valid, 5636 SdHoareTripleChecker+Invalid, 716 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 700 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-23 01:48:59,886 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3665 Valid, 5636 Invalid, 716 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 700 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-23 01:48:59,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24361 states. [2022-11-23 01:49:02,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24361 to 4904. [2022-11-23 01:49:02,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4904 states, 4903 states have (on average 1.3599836834591066) internal successors, (6668), 4903 states have internal predecessors, (6668), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 01:49:02,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4904 states to 4904 states and 6668 transitions. [2022-11-23 01:49:02,016 INFO L78 Accepts]: Start accepts. Automaton has 4904 states and 6668 transitions. Word has length 72 [2022-11-23 01:49:02,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 01:49:02,017 INFO L495 AbstractCegarLoop]: Abstraction has 4904 states and 6668 transitions. [2022-11-23 01:49:02,017 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.538461538461538) internal successors, (72), 13 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 01:49:02,017 INFO L276 IsEmpty]: Start isEmpty. Operand 4904 states and 6668 transitions. [2022-11-23 01:49:02,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-11-23 01:49:02,022 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 01:49:02,022 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] [2022-11-23 01:49:02,022 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-23 01:49:02,023 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 01:49:02,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 01:49:02,023 INFO L85 PathProgramCache]: Analyzing trace with hash 216436712, now seen corresponding path program 1 times [2022-11-23 01:49:02,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 01:49:02,023 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [572675552] [2022-11-23 01:49:02,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 01:49:02,024 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 01:49:02,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:49:02,440 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 01:49:02,440 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 01:49:02,441 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [572675552] [2022-11-23 01:49:02,441 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [572675552] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 01:49:02,441 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 01:49:02,441 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-23 01:49:02,441 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2120031737] [2022-11-23 01:49:02,441 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 01:49:02,441 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-23 01:49:02,441 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 01:49:02,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-23 01:49:02,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-11-23 01:49:02,442 INFO L87 Difference]: Start difference. First operand 4904 states and 6668 transitions. Second operand has 10 states, 10 states have (on average 7.2) internal successors, (72), 9 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 01:49:14,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 01:49:14,024 INFO L93 Difference]: Finished difference Result 21384 states and 29883 transitions. [2022-11-23 01:49:14,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-23 01:49:14,024 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 7.2) internal successors, (72), 9 states have internal predecessors, (72), 0 states have call successors, (0), 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 72 [2022-11-23 01:49:14,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 01:49:14,041 INFO L225 Difference]: With dead ends: 21384 [2022-11-23 01:49:14,041 INFO L226 Difference]: Without dead ends: 18054 [2022-11-23 01:49:14,046 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=141, Invalid=411, Unknown=0, NotChecked=0, Total=552 [2022-11-23 01:49:14,046 INFO L413 NwaCegarLoop]: 468 mSDtfsCounter, 3254 mSDsluCounter, 2201 mSDsCounter, 0 mSdLazyCounter, 1715 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3254 SdHoareTripleChecker+Valid, 2669 SdHoareTripleChecker+Invalid, 1733 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 1715 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-23 01:49:14,047 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3254 Valid, 2669 Invalid, 1733 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 1715 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-11-23 01:49:14,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18054 states. [2022-11-23 01:49:16,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18054 to 4779. [2022-11-23 01:49:16,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4779 states, 4778 states have (on average 1.3599832565927166) internal successors, (6498), 4778 states have internal predecessors, (6498), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 01:49:16,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4779 states to 4779 states and 6498 transitions. [2022-11-23 01:49:16,285 INFO L78 Accepts]: Start accepts. Automaton has 4779 states and 6498 transitions. Word has length 72 [2022-11-23 01:49:16,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 01:49:16,285 INFO L495 AbstractCegarLoop]: Abstraction has 4779 states and 6498 transitions. [2022-11-23 01:49:16,285 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.2) internal successors, (72), 9 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 01:49:16,285 INFO L276 IsEmpty]: Start isEmpty. Operand 4779 states and 6498 transitions. [2022-11-23 01:49:16,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-11-23 01:49:16,290 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 01:49:16,290 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] [2022-11-23 01:49:16,290 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-11-23 01:49:16,290 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 01:49:16,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 01:49:16,291 INFO L85 PathProgramCache]: Analyzing trace with hash 701339809, now seen corresponding path program 1 times [2022-11-23 01:49:16,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 01:49:16,291 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1732509769] [2022-11-23 01:49:16,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 01:49:16,292 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 01:49:16,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:49:17,008 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 01:49:17,008 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 01:49:17,008 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1732509769] [2022-11-23 01:49:17,008 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1732509769] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 01:49:17,008 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 01:49:17,009 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-11-23 01:49:17,009 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [67002515] [2022-11-23 01:49:17,009 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 01:49:17,009 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-23 01:49:17,009 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 01:49:17,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-23 01:49:17,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2022-11-23 01:49:17,010 INFO L87 Difference]: Start difference. First operand 4779 states and 6498 transitions. Second operand has 13 states, 13 states have (on average 5.615384615384615) internal successors, (73), 13 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 01:49:39,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 01:49:39,651 INFO L93 Difference]: Finished difference Result 33826 states and 47340 transitions. [2022-11-23 01:49:39,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-11-23 01:49:39,651 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.615384615384615) internal successors, (73), 13 states have internal predecessors, (73), 0 states have call successors, (0), 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 73 [2022-11-23 01:49:39,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 01:49:39,685 INFO L225 Difference]: With dead ends: 33826 [2022-11-23 01:49:39,685 INFO L226 Difference]: Without dead ends: 31738 [2022-11-23 01:49:39,691 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 257 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=324, Invalid=866, Unknown=0, NotChecked=0, Total=1190 [2022-11-23 01:49:39,691 INFO L413 NwaCegarLoop]: 664 mSDtfsCounter, 5528 mSDsluCounter, 3480 mSDsCounter, 0 mSdLazyCounter, 1077 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5528 SdHoareTripleChecker+Valid, 4144 SdHoareTripleChecker+Invalid, 1083 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 1077 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-23 01:49:39,692 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5528 Valid, 4144 Invalid, 1083 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 1077 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-23 01:49:39,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31738 states. [2022-11-23 01:49:42,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31738 to 4779. [2022-11-23 01:49:42,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4779 states, 4778 states have (on average 1.3597739640016744) internal successors, (6497), 4778 states have internal predecessors, (6497), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 01:49:42,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4779 states to 4779 states and 6497 transitions. [2022-11-23 01:49:42,451 INFO L78 Accepts]: Start accepts. Automaton has 4779 states and 6497 transitions. Word has length 73 [2022-11-23 01:49:42,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 01:49:42,452 INFO L495 AbstractCegarLoop]: Abstraction has 4779 states and 6497 transitions. [2022-11-23 01:49:42,452 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.615384615384615) internal successors, (73), 13 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 01:49:42,452 INFO L276 IsEmpty]: Start isEmpty. Operand 4779 states and 6497 transitions. [2022-11-23 01:49:42,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-11-23 01:49:42,455 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 01:49:42,455 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] [2022-11-23 01:49:42,455 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-11-23 01:49:42,456 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 01:49:42,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 01:49:42,456 INFO L85 PathProgramCache]: Analyzing trace with hash -39253326, now seen corresponding path program 1 times [2022-11-23 01:49:42,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 01:49:42,456 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1894668136] [2022-11-23 01:49:42,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 01:49:42,457 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 01:49:42,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:49:42,518 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 01:49:42,518 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 01:49:42,518 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1894668136] [2022-11-23 01:49:42,519 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1894668136] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 01:49:42,519 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 01:49:42,519 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 01:49:42,519 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [254116130] [2022-11-23 01:49:42,519 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 01:49:42,520 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 01:49:42,520 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 01:49:42,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 01:49:42,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 01:49:42,521 INFO L87 Difference]: Start difference. First operand 4779 states and 6497 transitions. Second operand has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 01:49:45,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 01:49:45,215 INFO L93 Difference]: Finished difference Result 7142 states and 9791 transitions. [2022-11-23 01:49:45,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 01:49:45,215 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 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 74 [2022-11-23 01:49:45,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 01:49:45,220 INFO L225 Difference]: With dead ends: 7142 [2022-11-23 01:49:45,220 INFO L226 Difference]: Without dead ends: 4781 [2022-11-23 01:49:45,224 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 [2022-11-23 01:49:45,224 INFO L413 NwaCegarLoop]: 707 mSDtfsCounter, 314 mSDsluCounter, 493 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 314 SdHoareTripleChecker+Valid, 1200 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-23 01:49:45,225 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [314 Valid, 1200 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 01:49:45,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4781 states. [2022-11-23 01:49:47,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4781 to 4779. [2022-11-23 01:49:47,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4779 states, 4778 states have (on average 1.3486814566764336) internal successors, (6444), 4778 states have internal predecessors, (6444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 01:49:47,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4779 states to 4779 states and 6444 transitions. [2022-11-23 01:49:47,779 INFO L78 Accepts]: Start accepts. Automaton has 4779 states and 6444 transitions. Word has length 74 [2022-11-23 01:49:47,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 01:49:47,779 INFO L495 AbstractCegarLoop]: Abstraction has 4779 states and 6444 transitions. [2022-11-23 01:49:47,780 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 01:49:47,780 INFO L276 IsEmpty]: Start isEmpty. Operand 4779 states and 6444 transitions. [2022-11-23 01:49:47,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-11-23 01:49:47,783 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 01:49:47,783 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] [2022-11-23 01:49:47,783 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-11-23 01:49:47,783 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 01:49:47,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 01:49:47,784 INFO L85 PathProgramCache]: Analyzing trace with hash 753697715, now seen corresponding path program 1 times [2022-11-23 01:49:47,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 01:49:47,784 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1241298029] [2022-11-23 01:49:47,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 01:49:47,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 01:49:47,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:49:47,838 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 01:49:47,838 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 01:49:47,839 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1241298029] [2022-11-23 01:49:47,839 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1241298029] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 01:49:47,839 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 01:49:47,839 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 01:49:47,839 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2114731819] [2022-11-23 01:49:47,840 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 01:49:47,840 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 01:49:47,840 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 01:49:47,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 01:49:47,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 01:49:47,841 INFO L87 Difference]: Start difference. First operand 4779 states and 6444 transitions. Second operand has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 01:49:52,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 01:49:52,284 INFO L93 Difference]: Finished difference Result 9363 states and 12771 transitions. [2022-11-23 01:49:52,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 01:49:52,285 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 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 74 [2022-11-23 01:49:52,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 01:49:52,291 INFO L225 Difference]: With dead ends: 9363 [2022-11-23 01:49:52,292 INFO L226 Difference]: Without dead ends: 6646 [2022-11-23 01:49:52,294 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 [2022-11-23 01:49:52,294 INFO L413 NwaCegarLoop]: 425 mSDtfsCounter, 423 mSDsluCounter, 136 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 423 SdHoareTripleChecker+Valid, 561 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 01:49:52,295 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [423 Valid, 561 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 01:49:52,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6646 states. [2022-11-23 01:49:56,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6646 to 6626. [2022-11-23 01:49:56,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6626 states, 6625 states have (on average 1.3676981132075472) internal successors, (9061), 6625 states have internal predecessors, (9061), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 01:49:56,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6626 states to 6626 states and 9061 transitions. [2022-11-23 01:49:56,410 INFO L78 Accepts]: Start accepts. Automaton has 6626 states and 9061 transitions. Word has length 74 [2022-11-23 01:49:56,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 01:49:56,411 INFO L495 AbstractCegarLoop]: Abstraction has 6626 states and 9061 transitions. [2022-11-23 01:49:56,411 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 01:49:56,411 INFO L276 IsEmpty]: Start isEmpty. Operand 6626 states and 9061 transitions. [2022-11-23 01:49:56,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-11-23 01:49:56,414 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 01:49:56,414 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] [2022-11-23 01:49:56,414 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-11-23 01:49:56,414 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 01:49:56,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 01:49:56,415 INFO L85 PathProgramCache]: Analyzing trace with hash -1200633410, now seen corresponding path program 1 times [2022-11-23 01:49:56,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 01:49:56,415 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [96526194] [2022-11-23 01:49:56,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 01:49:56,415 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 01:49:56,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:49:56,469 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 01:49:56,469 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 01:49:56,469 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [96526194] [2022-11-23 01:49:56,470 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [96526194] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 01:49:56,470 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 01:49:56,470 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 01:49:56,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [879729536] [2022-11-23 01:49:56,470 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 01:49:56,471 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 01:49:56,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 01:49:56,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 01:49:56,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 01:49:56,471 INFO L87 Difference]: Start difference. First operand 6626 states and 9061 transitions. Second operand has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 01:50:03,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 01:50:03,496 INFO L93 Difference]: Finished difference Result 14068 states and 19391 transitions. [2022-11-23 01:50:03,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 01:50:03,497 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 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 75 [2022-11-23 01:50:03,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 01:50:03,506 INFO L225 Difference]: With dead ends: 14068 [2022-11-23 01:50:03,506 INFO L226 Difference]: Without dead ends: 10001 [2022-11-23 01:50:03,509 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 [2022-11-23 01:50:03,510 INFO L413 NwaCegarLoop]: 382 mSDtfsCounter, 357 mSDsluCounter, 155 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 357 SdHoareTripleChecker+Valid, 537 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-23 01:50:03,510 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [357 Valid, 537 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 01:50:03,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10001 states. [2022-11-23 01:50:10,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10001 to 9969. [2022-11-23 01:50:10,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9969 states, 9968 states have (on average 1.3815208667736758) internal successors, (13771), 9968 states have internal predecessors, (13771), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 01:50:10,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9969 states to 9969 states and 13771 transitions. [2022-11-23 01:50:10,086 INFO L78 Accepts]: Start accepts. Automaton has 9969 states and 13771 transitions. Word has length 75 [2022-11-23 01:50:10,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 01:50:10,087 INFO L495 AbstractCegarLoop]: Abstraction has 9969 states and 13771 transitions. [2022-11-23 01:50:10,087 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 01:50:10,087 INFO L276 IsEmpty]: Start isEmpty. Operand 9969 states and 13771 transitions. [2022-11-23 01:50:10,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-11-23 01:50:10,090 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 01:50:10,091 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] [2022-11-23 01:50:10,091 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-11-23 01:50:10,091 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 01:50:10,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 01:50:10,091 INFO L85 PathProgramCache]: Analyzing trace with hash 173641677, now seen corresponding path program 1 times [2022-11-23 01:50:10,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 01:50:10,092 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [549301069] [2022-11-23 01:50:10,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 01:50:10,092 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 01:50:10,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:50:10,147 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 01:50:10,150 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 01:50:10,150 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [549301069] [2022-11-23 01:50:10,150 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [549301069] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 01:50:10,151 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 01:50:10,151 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 01:50:10,151 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1903305376] [2022-11-23 01:50:10,151 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 01:50:10,152 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 01:50:10,152 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 01:50:10,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 01:50:10,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 01:50:10,153 INFO L87 Difference]: Start difference. First operand 9969 states and 13771 transitions. Second operand has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 01:50:18,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 01:50:18,911 INFO L93 Difference]: Finished difference Result 19047 states and 26438 transitions. [2022-11-23 01:50:18,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 01:50:18,912 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 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 75 [2022-11-23 01:50:18,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 01:50:18,925 INFO L225 Difference]: With dead ends: 19047 [2022-11-23 01:50:18,925 INFO L226 Difference]: Without dead ends: 12696 [2022-11-23 01:50:18,929 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 [2022-11-23 01:50:18,930 INFO L413 NwaCegarLoop]: 433 mSDtfsCounter, 355 mSDsluCounter, 184 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 355 SdHoareTripleChecker+Valid, 617 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-23 01:50:18,930 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [355 Valid, 617 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 01:50:18,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12696 states. [2022-11-23 01:50:25,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12696 to 9409. [2022-11-23 01:50:25,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9409 states, 9408 states have (on average 1.3847789115646258) internal successors, (13028), 9408 states have internal predecessors, (13028), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 01:50:25,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9409 states to 9409 states and 13028 transitions. [2022-11-23 01:50:25,316 INFO L78 Accepts]: Start accepts. Automaton has 9409 states and 13028 transitions. Word has length 75 [2022-11-23 01:50:25,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 01:50:25,316 INFO L495 AbstractCegarLoop]: Abstraction has 9409 states and 13028 transitions. [2022-11-23 01:50:25,316 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 01:50:25,316 INFO L276 IsEmpty]: Start isEmpty. Operand 9409 states and 13028 transitions. [2022-11-23 01:50:25,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-11-23 01:50:25,322 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 01:50:25,322 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] [2022-11-23 01:50:25,323 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-11-23 01:50:25,323 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 01:50:25,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 01:50:25,323 INFO L85 PathProgramCache]: Analyzing trace with hash -859725899, now seen corresponding path program 1 times [2022-11-23 01:50:25,323 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 01:50:25,323 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2017809994] [2022-11-23 01:50:25,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 01:50:25,324 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 01:50:25,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:50:25,816 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 01:50:25,816 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 01:50:25,816 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2017809994] [2022-11-23 01:50:25,816 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2017809994] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 01:50:25,816 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 01:50:25,817 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-23 01:50:25,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [848112339] [2022-11-23 01:50:25,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 01:50:25,817 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-23 01:50:25,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 01:50:25,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-23 01:50:25,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2022-11-23 01:50:25,818 INFO L87 Difference]: Start difference. First operand 9409 states and 13028 transitions. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 11 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 01:51:11,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 01:51:11,890 INFO L93 Difference]: Finished difference Result 58350 states and 81200 transitions. [2022-11-23 01:51:11,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-11-23 01:51:11,891 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 11 states have internal predecessors, (76), 0 states have call successors, (0), 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 76 [2022-11-23 01:51:11,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 01:51:11,968 INFO L225 Difference]: With dead ends: 58350 [2022-11-23 01:51:11,968 INFO L226 Difference]: Without dead ends: 55492 [2022-11-23 01:51:11,982 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 499 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=457, Invalid=1349, Unknown=0, NotChecked=0, Total=1806 [2022-11-23 01:51:11,982 INFO L413 NwaCegarLoop]: 515 mSDtfsCounter, 5415 mSDsluCounter, 2366 mSDsCounter, 0 mSdLazyCounter, 2065 mSolverCounterSat, 112 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5415 SdHoareTripleChecker+Valid, 2881 SdHoareTripleChecker+Invalid, 2177 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 112 IncrementalHoareTripleChecker+Valid, 2065 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-11-23 01:51:11,983 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5415 Valid, 2881 Invalid, 2177 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [112 Valid, 2065 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-11-23 01:51:12,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55492 states. [2022-11-23 01:51:19,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55492 to 9417. [2022-11-23 01:51:19,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9417 states, 9416 states have (on average 1.3844519966015294) internal successors, (13036), 9416 states have internal predecessors, (13036), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 01:51:19,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9417 states to 9417 states and 13036 transitions. [2022-11-23 01:51:19,193 INFO L78 Accepts]: Start accepts. Automaton has 9417 states and 13036 transitions. Word has length 76 [2022-11-23 01:51:19,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 01:51:19,193 INFO L495 AbstractCegarLoop]: Abstraction has 9417 states and 13036 transitions. [2022-11-23 01:51:19,193 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 11 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 01:51:19,193 INFO L276 IsEmpty]: Start isEmpty. Operand 9417 states and 13036 transitions. [2022-11-23 01:51:19,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-11-23 01:51:19,197 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 01:51:19,197 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] [2022-11-23 01:51:19,197 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-11-23 01:51:19,197 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 01:51:19,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 01:51:19,198 INFO L85 PathProgramCache]: Analyzing trace with hash 812559439, now seen corresponding path program 1 times [2022-11-23 01:51:19,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 01:51:19,198 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1334734669] [2022-11-23 01:51:19,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 01:51:19,198 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 01:51:19,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:51:19,464 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 01:51:19,465 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 01:51:19,465 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1334734669] [2022-11-23 01:51:19,465 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1334734669] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 01:51:19,465 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 01:51:19,465 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-23 01:51:19,466 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [786074248] [2022-11-23 01:51:19,466 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 01:51:19,466 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-23 01:51:19,466 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 01:51:19,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-23 01:51:19,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-23 01:51:19,467 INFO L87 Difference]: Start difference. First operand 9417 states and 13036 transitions. Second operand has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 8 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 01:51:30,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 01:51:30,615 INFO L93 Difference]: Finished difference Result 15331 states and 21296 transitions. [2022-11-23 01:51:30,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-23 01:51:30,616 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 8 states have internal predecessors, (76), 0 states have call successors, (0), 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 76 [2022-11-23 01:51:30,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 01:51:30,628 INFO L225 Difference]: With dead ends: 15331 [2022-11-23 01:51:30,628 INFO L226 Difference]: Without dead ends: 12507 [2022-11-23 01:51:30,631 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=136, Invalid=326, Unknown=0, NotChecked=0, Total=462 [2022-11-23 01:51:30,632 INFO L413 NwaCegarLoop]: 329 mSDtfsCounter, 2352 mSDsluCounter, 989 mSDsCounter, 0 mSdLazyCounter, 916 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2352 SdHoareTripleChecker+Valid, 1318 SdHoareTripleChecker+Invalid, 935 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 916 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-23 01:51:30,632 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2352 Valid, 1318 Invalid, 935 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 916 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-23 01:51:30,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12507 states. [2022-11-23 01:51:37,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12507 to 9417. [2022-11-23 01:51:37,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9417 states, 9416 states have (on average 1.3843457943925233) internal successors, (13035), 9416 states have internal predecessors, (13035), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 01:51:37,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9417 states to 9417 states and 13035 transitions. [2022-11-23 01:51:37,748 INFO L78 Accepts]: Start accepts. Automaton has 9417 states and 13035 transitions. Word has length 76 [2022-11-23 01:51:37,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 01:51:37,748 INFO L495 AbstractCegarLoop]: Abstraction has 9417 states and 13035 transitions. [2022-11-23 01:51:37,748 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 8 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 01:51:37,748 INFO L276 IsEmpty]: Start isEmpty. Operand 9417 states and 13035 transitions. [2022-11-23 01:51:37,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-11-23 01:51:37,753 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 01:51:37,753 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] [2022-11-23 01:51:37,753 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-11-23 01:51:37,753 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 01:51:37,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 01:51:37,753 INFO L85 PathProgramCache]: Analyzing trace with hash 108461126, now seen corresponding path program 1 times [2022-11-23 01:51:37,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 01:51:37,753 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2117908027] [2022-11-23 01:51:37,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 01:51:37,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 01:51:37,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:51:37,993 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 01:51:37,993 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 01:51:37,993 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2117908027] [2022-11-23 01:51:37,993 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2117908027] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 01:51:37,994 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 01:51:37,994 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-23 01:51:37,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [286910642] [2022-11-23 01:51:37,994 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 01:51:37,994 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-23 01:51:37,995 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 01:51:37,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-23 01:51:37,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-11-23 01:51:37,995 INFO L87 Difference]: Start difference. First operand 9417 states and 13035 transitions. Second operand has 9 states, 9 states have (on average 8.555555555555555) internal successors, (77), 8 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 01:51:55,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 01:51:55,686 INFO L93 Difference]: Finished difference Result 23576 states and 32790 transitions. [2022-11-23 01:51:55,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-23 01:51:55,687 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.555555555555555) internal successors, (77), 8 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-11-23 01:51:55,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 01:51:55,707 INFO L225 Difference]: With dead ends: 23576 [2022-11-23 01:51:55,707 INFO L226 Difference]: Without dead ends: 20718 [2022-11-23 01:51:55,711 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2022-11-23 01:51:55,712 INFO L413 NwaCegarLoop]: 412 mSDtfsCounter, 1740 mSDsluCounter, 1146 mSDsCounter, 0 mSdLazyCounter, 1131 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1740 SdHoareTripleChecker+Valid, 1558 SdHoareTripleChecker+Invalid, 1149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 1131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-23 01:51:55,712 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1740 Valid, 1558 Invalid, 1149 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 1131 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-23 01:51:55,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20718 states. [2022-11-23 01:52:02,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20718 to 9394. [2022-11-23 01:52:02,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9394 states, 9393 states have (on average 1.3848610667518364) internal successors, (13008), 9393 states have internal predecessors, (13008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 01:52:02,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9394 states to 9394 states and 13008 transitions. [2022-11-23 01:52:02,769 INFO L78 Accepts]: Start accepts. Automaton has 9394 states and 13008 transitions. Word has length 77 [2022-11-23 01:52:02,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 01:52:02,769 INFO L495 AbstractCegarLoop]: Abstraction has 9394 states and 13008 transitions. [2022-11-23 01:52:02,770 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.555555555555555) internal successors, (77), 8 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 01:52:02,770 INFO L276 IsEmpty]: Start isEmpty. Operand 9394 states and 13008 transitions. [2022-11-23 01:52:02,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-11-23 01:52:02,773 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 01:52:02,773 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] [2022-11-23 01:52:02,773 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-11-23 01:52:02,773 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 01:52:02,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 01:52:02,773 INFO L85 PathProgramCache]: Analyzing trace with hash -1768326172, now seen corresponding path program 1 times [2022-11-23 01:52:02,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 01:52:02,774 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1041570674] [2022-11-23 01:52:02,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 01:52:02,774 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 01:52:02,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:52:02,831 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 01:52:02,832 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 01:52:02,832 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1041570674] [2022-11-23 01:52:02,832 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1041570674] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 01:52:02,832 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 01:52:02,832 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 01:52:02,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1344135102] [2022-11-23 01:52:02,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 01:52:02,833 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 01:52:02,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 01:52:02,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 01:52:02,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 01:52:02,834 INFO L87 Difference]: Start difference. First operand 9394 states and 13008 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 01:52:08,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 01:52:08,458 INFO L93 Difference]: Finished difference Result 12620 states and 17492 transitions. [2022-11-23 01:52:08,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 01:52:08,459 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-11-23 01:52:08,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 01:52:08,465 INFO L225 Difference]: With dead ends: 12620 [2022-11-23 01:52:08,465 INFO L226 Difference]: Without dead ends: 7758 [2022-11-23 01:52:08,469 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 [2022-11-23 01:52:08,469 INFO L413 NwaCegarLoop]: 519 mSDtfsCounter, 232 mSDsluCounter, 256 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 232 SdHoareTripleChecker+Valid, 775 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-23 01:52:08,470 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [232 Valid, 775 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 01:52:08,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7758 states. [2022-11-23 01:52:12,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7758 to 5962. [2022-11-23 01:52:12,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5962 states, 5961 states have (on average 1.3603422244589833) internal successors, (8109), 5961 states have internal predecessors, (8109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 01:52:12,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5962 states to 5962 states and 8109 transitions. [2022-11-23 01:52:12,724 INFO L78 Accepts]: Start accepts. Automaton has 5962 states and 8109 transitions. Word has length 77 [2022-11-23 01:52:12,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 01:52:12,725 INFO L495 AbstractCegarLoop]: Abstraction has 5962 states and 8109 transitions. [2022-11-23 01:52:12,725 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 01:52:12,725 INFO L276 IsEmpty]: Start isEmpty. Operand 5962 states and 8109 transitions. [2022-11-23 01:52:12,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-11-23 01:52:12,728 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 01:52:12,728 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] [2022-11-23 01:52:12,729 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-11-23 01:52:12,729 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 01:52:12,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 01:52:12,729 INFO L85 PathProgramCache]: Analyzing trace with hash 1645706330, now seen corresponding path program 1 times [2022-11-23 01:52:12,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 01:52:12,729 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1793168530] [2022-11-23 01:52:12,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 01:52:12,730 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 01:52:12,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:52:12,790 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 01:52:12,791 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 01:52:12,791 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1793168530] [2022-11-23 01:52:12,791 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1793168530] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 01:52:12,791 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 01:52:12,791 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 01:52:12,792 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [978510831] [2022-11-23 01:52:12,792 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 01:52:12,792 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 01:52:12,792 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 01:52:12,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 01:52:12,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 01:52:12,793 INFO L87 Difference]: Start difference. First operand 5962 states and 8109 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 01:52:16,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 01:52:16,320 INFO L93 Difference]: Finished difference Result 7993 states and 10882 transitions. [2022-11-23 01:52:16,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 01:52:16,320 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-11-23 01:52:16,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 01:52:16,325 INFO L225 Difference]: With dead ends: 7993 [2022-11-23 01:52:16,325 INFO L226 Difference]: Without dead ends: 4997 [2022-11-23 01:52:16,327 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 [2022-11-23 01:52:16,327 INFO L413 NwaCegarLoop]: 549 mSDtfsCounter, 238 mSDsluCounter, 286 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 238 SdHoareTripleChecker+Valid, 835 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-23 01:52:16,328 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [238 Valid, 835 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 01:52:16,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4997 states. [2022-11-23 01:52:19,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4997 to 3930. [2022-11-23 01:52:19,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3930 states, 3929 states have (on average 1.3290913718503437) internal successors, (5222), 3929 states have internal predecessors, (5222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 01:52:19,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3930 states to 3930 states and 5222 transitions. [2022-11-23 01:52:19,049 INFO L78 Accepts]: Start accepts. Automaton has 3930 states and 5222 transitions. Word has length 77 [2022-11-23 01:52:19,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 01:52:19,049 INFO L495 AbstractCegarLoop]: Abstraction has 3930 states and 5222 transitions. [2022-11-23 01:52:19,049 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 01:52:19,049 INFO L276 IsEmpty]: Start isEmpty. Operand 3930 states and 5222 transitions. [2022-11-23 01:52:19,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-11-23 01:52:19,051 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 01:52:19,052 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] [2022-11-23 01:52:19,052 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-11-23 01:52:19,052 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 01:52:19,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 01:52:19,053 INFO L85 PathProgramCache]: Analyzing trace with hash 264768951, now seen corresponding path program 1 times [2022-11-23 01:52:19,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 01:52:19,053 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1322256843] [2022-11-23 01:52:19,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 01:52:19,053 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 01:52:19,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:52:19,657 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 01:52:19,657 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 01:52:19,657 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1322256843] [2022-11-23 01:52:19,657 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1322256843] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 01:52:19,657 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 01:52:19,657 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-11-23 01:52:19,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1949815032] [2022-11-23 01:52:19,658 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 01:52:19,658 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-23 01:52:19,658 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 01:52:19,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-23 01:52:19,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2022-11-23 01:52:19,659 INFO L87 Difference]: Start difference. First operand 3930 states and 5222 transitions. Second operand has 13 states, 13 states have (on average 6.076923076923077) internal successors, (79), 13 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 01:52:31,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 01:52:31,297 INFO L93 Difference]: Finished difference Result 12111 states and 16317 transitions. [2022-11-23 01:52:31,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-23 01:52:31,297 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 6.076923076923077) internal successors, (79), 13 states have internal predecessors, (79), 0 states have call successors, (0), 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 79 [2022-11-23 01:52:31,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 01:52:31,308 INFO L225 Difference]: With dead ends: 12111 [2022-11-23 01:52:31,308 INFO L226 Difference]: Without dead ends: 11956 [2022-11-23 01:52:31,310 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 187 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=253, Invalid=677, Unknown=0, NotChecked=0, Total=930 [2022-11-23 01:52:31,310 INFO L413 NwaCegarLoop]: 547 mSDtfsCounter, 4464 mSDsluCounter, 2497 mSDsCounter, 0 mSdLazyCounter, 626 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4464 SdHoareTripleChecker+Valid, 3044 SdHoareTripleChecker+Invalid, 632 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 626 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-23 01:52:31,310 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4464 Valid, 3044 Invalid, 632 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 626 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-23 01:52:31,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11956 states. [2022-11-23 01:52:34,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11956 to 3897. [2022-11-23 01:52:34,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3897 states, 3896 states have (on average 1.3295687885010268) internal successors, (5180), 3896 states have internal predecessors, (5180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 01:52:34,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3897 states to 3897 states and 5180 transitions. [2022-11-23 01:52:34,095 INFO L78 Accepts]: Start accepts. Automaton has 3897 states and 5180 transitions. Word has length 79 [2022-11-23 01:52:34,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 01:52:34,096 INFO L495 AbstractCegarLoop]: Abstraction has 3897 states and 5180 transitions. [2022-11-23 01:52:34,096 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.076923076923077) internal successors, (79), 13 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 01:52:34,096 INFO L276 IsEmpty]: Start isEmpty. Operand 3897 states and 5180 transitions. [2022-11-23 01:52:34,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-11-23 01:52:34,099 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 01:52:34,099 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] [2022-11-23 01:52:34,099 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-11-23 01:52:34,099 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 01:52:34,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 01:52:34,100 INFO L85 PathProgramCache]: Analyzing trace with hash 974682057, now seen corresponding path program 1 times [2022-11-23 01:52:34,100 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 01:52:34,100 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2108653834] [2022-11-23 01:52:34,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 01:52:34,100 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 01:52:34,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:52:34,209 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 01:52:34,209 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 01:52:34,210 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2108653834] [2022-11-23 01:52:34,210 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2108653834] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 01:52:34,210 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 01:52:34,210 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-23 01:52:34,210 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1512381611] [2022-11-23 01:52:34,210 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 01:52:34,211 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-23 01:52:34,211 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 01:52:34,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-23 01:52:34,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-23 01:52:34,212 INFO L87 Difference]: Start difference. First operand 3897 states and 5180 transitions. Second operand has 6 states, 6 states have (on average 14.166666666666666) internal successors, (85), 6 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 01:52:42,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 01:52:42,407 INFO L93 Difference]: Finished difference Result 12619 states and 17272 transitions. [2022-11-23 01:52:42,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-23 01:52:42,407 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.166666666666666) internal successors, (85), 6 states have internal predecessors, (85), 0 states have call successors, (0), 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 85 [2022-11-23 01:52:42,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 01:52:42,418 INFO L225 Difference]: With dead ends: 12619 [2022-11-23 01:52:42,419 INFO L226 Difference]: Without dead ends: 9755 [2022-11-23 01:52:42,422 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-11-23 01:52:42,422 INFO L413 NwaCegarLoop]: 360 mSDtfsCounter, 1756 mSDsluCounter, 831 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1756 SdHoareTripleChecker+Valid, 1191 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 01:52:42,423 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1756 Valid, 1191 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 01:52:42,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9755 states. [2022-11-23 01:52:47,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9755 to 6759. [2022-11-23 01:52:47,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6759 states, 6758 states have (on average 1.3378218407812963) internal successors, (9041), 6758 states have internal predecessors, (9041), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 01:52:47,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6759 states to 6759 states and 9041 transitions. [2022-11-23 01:52:47,817 INFO L78 Accepts]: Start accepts. Automaton has 6759 states and 9041 transitions. Word has length 85 [2022-11-23 01:52:47,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 01:52:47,817 INFO L495 AbstractCegarLoop]: Abstraction has 6759 states and 9041 transitions. [2022-11-23 01:52:47,818 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.166666666666666) internal successors, (85), 6 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 01:52:47,818 INFO L276 IsEmpty]: Start isEmpty. Operand 6759 states and 9041 transitions. [2022-11-23 01:52:47,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-11-23 01:52:47,824 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 01:52:47,824 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] [2022-11-23 01:52:47,825 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-11-23 01:52:47,825 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 01:52:47,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 01:52:47,825 INFO L85 PathProgramCache]: Analyzing trace with hash -567265296, now seen corresponding path program 1 times [2022-11-23 01:52:47,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 01:52:47,826 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [553266736] [2022-11-23 01:52:47,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 01:52:47,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 01:52:47,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:52:47,955 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 01:52:47,955 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 01:52:47,956 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [553266736] [2022-11-23 01:52:47,956 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [553266736] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 01:52:47,956 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 01:52:47,956 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-23 01:52:47,956 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1162747308] [2022-11-23 01:52:47,957 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 01:52:47,957 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-23 01:52:47,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 01:52:47,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-23 01:52:47,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-23 01:52:47,958 INFO L87 Difference]: Start difference. First operand 6759 states and 9041 transitions. Second operand has 6 states, 6 states have (on average 14.333333333333334) internal successors, (86), 6 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 01:52:55,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 01:52:55,058 INFO L93 Difference]: Finished difference Result 8863 states and 11820 transitions. [2022-11-23 01:52:55,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-23 01:52:55,058 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.333333333333334) internal successors, (86), 6 states have internal predecessors, (86), 0 states have call successors, (0), 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 86 [2022-11-23 01:52:55,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 01:52:55,067 INFO L225 Difference]: With dead ends: 8863 [2022-11-23 01:52:55,067 INFO L226 Difference]: Without dead ends: 8023 [2022-11-23 01:52:55,070 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-23 01:52:55,070 INFO L413 NwaCegarLoop]: 584 mSDtfsCounter, 1137 mSDsluCounter, 493 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1137 SdHoareTripleChecker+Valid, 1077 SdHoareTripleChecker+Invalid, 138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 01:52:55,071 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1137 Valid, 1077 Invalid, 138 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 01:52:55,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8023 states. [2022-11-23 01:53:01,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8023 to 7641. [2022-11-23 01:53:01,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7641 states, 7640 states have (on average 1.33717277486911) internal successors, (10216), 7640 states have internal predecessors, (10216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 01:53:01,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7641 states to 7641 states and 10216 transitions. [2022-11-23 01:53:01,575 INFO L78 Accepts]: Start accepts. Automaton has 7641 states and 10216 transitions. Word has length 86 [2022-11-23 01:53:01,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 01:53:01,575 INFO L495 AbstractCegarLoop]: Abstraction has 7641 states and 10216 transitions. [2022-11-23 01:53:01,575 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.333333333333334) internal successors, (86), 6 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 01:53:01,576 INFO L276 IsEmpty]: Start isEmpty. Operand 7641 states and 10216 transitions. [2022-11-23 01:53:01,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2022-11-23 01:53:01,581 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 01:53:01,582 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] [2022-11-23 01:53:01,582 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-11-23 01:53:01,582 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 01:53:01,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 01:53:01,582 INFO L85 PathProgramCache]: Analyzing trace with hash -238941005, now seen corresponding path program 1 times [2022-11-23 01:53:01,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 01:53:01,583 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [106152129] [2022-11-23 01:53:01,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 01:53:01,583 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 01:53:01,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:53:01,692 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 01:53:01,692 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 01:53:01,692 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [106152129] [2022-11-23 01:53:01,692 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [106152129] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 01:53:01,693 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 01:53:01,693 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 01:53:01,693 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [947308858] [2022-11-23 01:53:01,693 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 01:53:01,693 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 01:53:01,694 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 01:53:01,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 01:53:01,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 01:53:01,694 INFO L87 Difference]: Start difference. First operand 7641 states and 10216 transitions. Second operand has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 01:53:14,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 01:53:14,138 INFO L93 Difference]: Finished difference Result 20381 states and 27464 transitions. [2022-11-23 01:53:14,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 01:53:14,141 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 0 states have call successors, (0), 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 87 [2022-11-23 01:53:14,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 01:53:14,155 INFO L225 Difference]: With dead ends: 20381 [2022-11-23 01:53:14,155 INFO L226 Difference]: Without dead ends: 13759 [2022-11-23 01:53:14,159 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 [2022-11-23 01:53:14,160 INFO L413 NwaCegarLoop]: 473 mSDtfsCounter, 157 mSDsluCounter, 298 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 157 SdHoareTripleChecker+Valid, 771 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-23 01:53:14,160 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [157 Valid, 771 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 01:53:14,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13759 states. [2022-11-23 01:53:26,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13759 to 13277. [2022-11-23 01:53:26,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13277 states, 13276 states have (on average 1.3347393793311237) internal successors, (17720), 13276 states have internal predecessors, (17720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 01:53:26,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13277 states to 13277 states and 17720 transitions. [2022-11-23 01:53:26,205 INFO L78 Accepts]: Start accepts. Automaton has 13277 states and 17720 transitions. Word has length 87 [2022-11-23 01:53:26,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 01:53:26,206 INFO L495 AbstractCegarLoop]: Abstraction has 13277 states and 17720 transitions. [2022-11-23 01:53:26,206 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 01:53:26,206 INFO L276 IsEmpty]: Start isEmpty. Operand 13277 states and 17720 transitions. [2022-11-23 01:53:26,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2022-11-23 01:53:26,210 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 01:53:26,210 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] [2022-11-23 01:53:26,210 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-11-23 01:53:26,210 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 01:53:26,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 01:53:26,211 INFO L85 PathProgramCache]: Analyzing trace with hash -951231946, now seen corresponding path program 1 times [2022-11-23 01:53:26,211 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 01:53:26,211 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1254237007] [2022-11-23 01:53:26,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 01:53:26,211 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 01:53:26,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:53:26,325 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 01:53:26,325 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 01:53:26,325 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1254237007] [2022-11-23 01:53:26,325 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1254237007] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 01:53:26,325 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 01:53:26,326 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 01:53:26,326 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1346965845] [2022-11-23 01:53:26,326 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 01:53:26,327 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 01:53:26,327 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 01:53:26,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 01:53:26,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 01:53:26,327 INFO L87 Difference]: Start difference. First operand 13277 states and 17720 transitions. Second operand has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 01:53:49,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 01:53:49,092 INFO L93 Difference]: Finished difference Result 35897 states and 48118 transitions. [2022-11-23 01:53:49,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 01:53:49,092 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 0 states have call successors, (0), 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 87 [2022-11-23 01:53:49,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 01:53:49,115 INFO L225 Difference]: With dead ends: 35897 [2022-11-23 01:53:49,115 INFO L226 Difference]: Without dead ends: 23639 [2022-11-23 01:53:49,124 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 [2022-11-23 01:53:49,124 INFO L413 NwaCegarLoop]: 455 mSDtfsCounter, 138 mSDsluCounter, 311 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 138 SdHoareTripleChecker+Valid, 766 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-23 01:53:49,125 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [138 Valid, 766 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 01:53:49,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23639 states. [2022-11-23 01:54:10,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23639 to 21509. [2022-11-23 01:54:10,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21509 states, 21508 states have (on average 1.33187651106565) internal successors, (28646), 21508 states have internal predecessors, (28646), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 01:54:10,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21509 states to 21509 states and 28646 transitions. [2022-11-23 01:54:10,293 INFO L78 Accepts]: Start accepts. Automaton has 21509 states and 28646 transitions. Word has length 87 [2022-11-23 01:54:10,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 01:54:10,293 INFO L495 AbstractCegarLoop]: Abstraction has 21509 states and 28646 transitions. [2022-11-23 01:54:10,293 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 01:54:10,293 INFO L276 IsEmpty]: Start isEmpty. Operand 21509 states and 28646 transitions. [2022-11-23 01:54:10,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-11-23 01:54:10,296 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 01:54:10,296 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] [2022-11-23 01:54:10,297 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2022-11-23 01:54:10,297 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 01:54:10,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 01:54:10,297 INFO L85 PathProgramCache]: Analyzing trace with hash 1516240729, now seen corresponding path program 1 times [2022-11-23 01:54:10,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 01:54:10,298 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1612051666] [2022-11-23 01:54:10,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 01:54:10,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 01:54:10,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:54:10,398 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 01:54:10,398 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 01:54:10,398 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1612051666] [2022-11-23 01:54:10,398 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1612051666] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 01:54:10,398 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 01:54:10,399 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 01:54:10,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1152106060] [2022-11-23 01:54:10,399 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 01:54:10,399 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 01:54:10,399 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 01:54:10,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 01:54:10,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 01:54:10,400 INFO L87 Difference]: Start difference. First operand 21509 states and 28646 transitions. Second operand has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 01:54:50,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 01:54:50,081 INFO L93 Difference]: Finished difference Result 59993 states and 79936 transitions. [2022-11-23 01:54:50,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 01:54:50,081 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 0 states have call successors, (0), 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 88 [2022-11-23 01:54:50,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 01:54:50,127 INFO L225 Difference]: With dead ends: 59993 [2022-11-23 01:54:50,127 INFO L226 Difference]: Without dead ends: 39503 [2022-11-23 01:54:50,144 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 [2022-11-23 01:54:50,144 INFO L413 NwaCegarLoop]: 437 mSDtfsCounter, 121 mSDsluCounter, 320 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 121 SdHoareTripleChecker+Valid, 757 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-23 01:54:50,145 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [121 Valid, 757 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 01:54:50,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39503 states. [2022-11-23 01:55:30,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39503 to 35569. [2022-11-23 01:55:30,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35569 states, 35568 states have (on average 1.3236054880791723) internal successors, (47078), 35568 states have internal predecessors, (47078), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 01:55:30,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35569 states to 35569 states and 47078 transitions. [2022-11-23 01:55:30,564 INFO L78 Accepts]: Start accepts. Automaton has 35569 states and 47078 transitions. Word has length 88 [2022-11-23 01:55:30,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 01:55:30,564 INFO L495 AbstractCegarLoop]: Abstraction has 35569 states and 47078 transitions. [2022-11-23 01:55:30,565 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 01:55:30,565 INFO L276 IsEmpty]: Start isEmpty. Operand 35569 states and 47078 transitions. [2022-11-23 01:55:30,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-11-23 01:55:30,568 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 01:55:30,568 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] [2022-11-23 01:55:30,568 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2022-11-23 01:55:30,569 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 01:55:30,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 01:55:30,569 INFO L85 PathProgramCache]: Analyzing trace with hash 1059802897, now seen corresponding path program 1 times [2022-11-23 01:55:30,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 01:55:30,569 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2100513951] [2022-11-23 01:55:30,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 01:55:30,570 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 01:55:30,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:55:30,672 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 01:55:30,673 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 01:55:30,673 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2100513951] [2022-11-23 01:55:30,673 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2100513951] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 01:55:30,673 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 01:55:30,673 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 01:55:30,674 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [5111213] [2022-11-23 01:55:30,674 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 01:55:30,674 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 01:55:30,674 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 01:55:30,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 01:55:30,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 01:55:30,675 INFO L87 Difference]: Start difference. First operand 35569 states and 47078 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) [2022-11-23 01:56:49,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 01:56:49,390 INFO L93 Difference]: Finished difference Result 101001 states and 133556 transitions. [2022-11-23 01:56:49,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 01:56:49,390 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 [2022-11-23 01:56:49,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 01:56:49,496 INFO L225 Difference]: With dead ends: 101001 [2022-11-23 01:56:49,496 INFO L226 Difference]: Without dead ends: 65116 [2022-11-23 01:56:49,528 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 [2022-11-23 01:56:49,529 INFO L413 NwaCegarLoop]: 419 mSDtfsCounter, 98 mSDsluCounter, 327 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 746 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-23 01:56:49,529 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [98 Valid, 746 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 01:56:49,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65116 states. [2022-11-23 01:57:59,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65116 to 59567. [2022-11-23 01:57:59,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59567 states, 59566 states have (on average 1.3106973776986872) internal successors, (78073), 59566 states have internal predecessors, (78073), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 01:57:59,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59567 states to 59567 states and 78073 transitions. [2022-11-23 01:57:59,738 INFO L78 Accepts]: Start accepts. Automaton has 59567 states and 78073 transitions. Word has length 91 [2022-11-23 01:57:59,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 01:57:59,738 INFO L495 AbstractCegarLoop]: Abstraction has 59567 states and 78073 transitions. [2022-11-23 01:57:59,738 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) [2022-11-23 01:57:59,739 INFO L276 IsEmpty]: Start isEmpty. Operand 59567 states and 78073 transitions. [2022-11-23 01:57:59,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-11-23 01:57:59,743 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 01:57:59,743 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] [2022-11-23 01:57:59,743 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2022-11-23 01:57:59,743 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 01:57:59,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 01:57:59,744 INFO L85 PathProgramCache]: Analyzing trace with hash -1224297681, now seen corresponding path program 1 times [2022-11-23 01:57:59,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 01:57:59,745 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1046919978] [2022-11-23 01:57:59,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 01:57:59,745 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 01:57:59,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:57:59,995 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 01:57:59,995 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 01:57:59,996 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1046919978] [2022-11-23 01:57:59,996 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1046919978] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 01:57:59,996 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 01:57:59,996 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-23 01:57:59,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1189107716] [2022-11-23 01:57:59,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 01:57:59,996 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-23 01:57:59,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 01:57:59,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-23 01:57:59,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-23 01:57:59,997 INFO L87 Difference]: Start difference. First operand 59567 states and 78073 transitions. Second operand has 6 states, 6 states have (on average 15.333333333333334) internal successors, (92), 6 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:00:24,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 02:00:24,205 INFO L93 Difference]: Finished difference Result 126868 states and 164123 transitions. [2022-11-23 02:00:24,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-23 02:00:24,205 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.333333333333334) internal successors, (92), 6 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 92 [2022-11-23 02:00:24,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 02:00:24,568 INFO L225 Difference]: With dead ends: 126868 [2022-11-23 02:00:24,568 INFO L226 Difference]: Without dead ends: 126861 [2022-11-23 02:00:24,601 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2022-11-23 02:00:24,602 INFO L413 NwaCegarLoop]: 447 mSDtfsCounter, 434 mSDsluCounter, 1431 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 434 SdHoareTripleChecker+Valid, 1878 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 02:00:24,603 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [434 Valid, 1878 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 02:00:24,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126861 states. [2022-11-23 02:01:36,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126861 to 64269. [2022-11-23 02:01:36,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64269 states, 64268 states have (on average 1.2879193377730753) internal successors, (82772), 64268 states have internal predecessors, (82772), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:01:36,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64269 states to 64269 states and 82772 transitions. [2022-11-23 02:01:36,744 INFO L78 Accepts]: Start accepts. Automaton has 64269 states and 82772 transitions. Word has length 92 [2022-11-23 02:01:36,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 02:01:36,745 INFO L495 AbstractCegarLoop]: Abstraction has 64269 states and 82772 transitions. [2022-11-23 02:01:36,745 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.333333333333334) internal successors, (92), 6 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:01:36,745 INFO L276 IsEmpty]: Start isEmpty. Operand 64269 states and 82772 transitions. [2022-11-23 02:01:36,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-11-23 02:01:36,749 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 02:01:36,749 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] [2022-11-23 02:01:36,749 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2022-11-23 02:01:36,750 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 02:01:36,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:01:36,750 INFO L85 PathProgramCache]: Analyzing trace with hash 1147476022, now seen corresponding path program 1 times [2022-11-23 02:01:36,750 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:01:36,751 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [289249021] [2022-11-23 02:01:36,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:01:36,751 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:01:36,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:01:36,820 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:01:36,820 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:01:36,821 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [289249021] [2022-11-23 02:01:36,821 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [289249021] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:01:36,821 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 02:01:36,821 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 02:01:36,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [717926608] [2022-11-23 02:01:36,822 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:01:36,822 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 02:01:36,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:01:36,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 02:01:36,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 02:01:36,823 INFO L87 Difference]: Start difference. First operand 64269 states and 82772 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)