./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4e7fbc69 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d1b85f1-359c-4c3a-8f22-30355d94c7d8/bin/uautomizer-QkZJyEgLgS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d1b85f1-359c-4c3a-8f22-30355d94c7d8/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_3d1b85f1-359c-4c3a-8f22-30355d94c7d8/bin/uautomizer-QkZJyEgLgS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d1b85f1-359c-4c3a-8f22-30355d94c7d8/bin/uautomizer-QkZJyEgLgS/config/AutomizerReach.xml -i ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d1b85f1-359c-4c3a-8f22-30355d94c7d8/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_3d1b85f1-359c-4c3a-8f22-30355d94c7d8/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 5c7b2e547f39f7d53d20335ecc1b1fbde6acdc52384cb52caa86017352bf317a --- 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 03:58:01,884 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-23 03:58:01,887 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-23 03:58:01,930 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-23 03:58:01,930 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-23 03:58:01,934 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-23 03:58:01,937 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-23 03:58:01,940 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-23 03:58:01,942 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-23 03:58:01,947 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-23 03:58:01,950 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-23 03:58:01,951 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-23 03:58:01,952 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-23 03:58:01,953 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-23 03:58:01,954 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-23 03:58:01,955 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-23 03:58:01,956 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-23 03:58:01,957 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-23 03:58:01,958 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-23 03:58:01,962 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-23 03:58:01,963 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-23 03:58:01,967 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-23 03:58:01,969 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-23 03:58:01,970 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-23 03:58:01,978 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-23 03:58:01,982 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-23 03:58:01,982 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-23 03:58:01,983 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-23 03:58:01,985 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-23 03:58:01,987 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-23 03:58:01,987 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-23 03:58:01,988 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-23 03:58:01,990 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-23 03:58:01,991 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-23 03:58:01,994 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-23 03:58:01,994 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-23 03:58:01,995 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-23 03:58:01,995 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-23 03:58:01,995 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-23 03:58:01,997 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-23 03:58:01,998 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-23 03:58:01,999 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d1b85f1-359c-4c3a-8f22-30355d94c7d8/bin/uautomizer-QkZJyEgLgS/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-23 03:58:02,041 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-23 03:58:02,042 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-23 03:58:02,043 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-23 03:58:02,043 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-23 03:58:02,044 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-23 03:58:02,044 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-23 03:58:02,045 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-23 03:58:02,045 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-23 03:58:02,045 INFO L138 SettingsManager]: * Use SBE=true [2022-11-23 03:58:02,046 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-23 03:58:02,047 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-23 03:58:02,047 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-23 03:58:02,047 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-23 03:58:02,048 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-23 03:58:02,048 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-23 03:58:02,048 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-23 03:58:02,048 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-23 03:58:02,049 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-23 03:58:02,049 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-23 03:58:02,049 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-23 03:58:02,049 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-23 03:58:02,050 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-23 03:58:02,050 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-23 03:58:02,050 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-23 03:58:02,050 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 03:58:02,051 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-23 03:58:02,051 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-23 03:58:02,051 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-23 03:58:02,052 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-23 03:58:02,052 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-23 03:58:02,052 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-23 03:58:02,053 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-23 03:58:02,053 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-11-23 03:58:02,053 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-23 03:58:02,054 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_3d1b85f1-359c-4c3a-8f22-30355d94c7d8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d1b85f1-359c-4c3a-8f22-30355d94c7d8/bin/uautomizer-QkZJyEgLgS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5c7b2e547f39f7d53d20335ecc1b1fbde6acdc52384cb52caa86017352bf317a [2022-11-23 03:58:02,334 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-23 03:58:02,368 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-23 03:58:02,371 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-23 03:58:02,373 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-23 03:58:02,373 INFO L275 PluginConnector]: CDTParser initialized [2022-11-23 03:58:02,375 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d1b85f1-359c-4c3a-8f22-30355d94c7d8/bin/uautomizer-QkZJyEgLgS/../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2022-11-23 03:58:05,536 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-23 03:58:05,807 INFO L351 CDTParser]: Found 1 translation units. [2022-11-23 03:58:05,808 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d1b85f1-359c-4c3a-8f22-30355d94c7d8/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2022-11-23 03:58:05,819 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d1b85f1-359c-4c3a-8f22-30355d94c7d8/bin/uautomizer-QkZJyEgLgS/data/631379efe/dda5b78b54d34e3e9f9fe3ce3c30d58b/FLAG5995d39c8 [2022-11-23 03:58:05,834 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d1b85f1-359c-4c3a-8f22-30355d94c7d8/bin/uautomizer-QkZJyEgLgS/data/631379efe/dda5b78b54d34e3e9f9fe3ce3c30d58b [2022-11-23 03:58:05,838 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-23 03:58:05,839 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-23 03:58:05,840 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-23 03:58:05,841 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-23 03:58:05,849 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-23 03:58:05,850 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:58:05" (1/1) ... [2022-11-23 03:58:05,851 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7b4b3ce3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:58:05, skipping insertion in model container [2022-11-23 03:58:05,851 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:58:05" (1/1) ... [2022-11-23 03:58:05,861 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-23 03:58:05,906 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-23 03:58:06,178 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_3d1b85f1-359c-4c3a-8f22-30355d94c7d8/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c[7834,7847] [2022-11-23 03:58:06,235 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 03:58:06,269 INFO L203 MainTranslator]: Completed pre-run [2022-11-23 03:58:06,333 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_3d1b85f1-359c-4c3a-8f22-30355d94c7d8/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c[7834,7847] [2022-11-23 03:58:06,373 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 03:58:06,397 INFO L208 MainTranslator]: Completed translation [2022-11-23 03:58:06,410 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:58:06 WrapperNode [2022-11-23 03:58:06,410 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-23 03:58:06,411 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-23 03:58:06,411 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-23 03:58:06,412 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-23 03:58:06,420 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:58:06" (1/1) ... [2022-11-23 03:58:06,441 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:58:06" (1/1) ... [2022-11-23 03:58:06,491 INFO L138 Inliner]: procedures = 25, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 616 [2022-11-23 03:58:06,491 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-23 03:58:06,492 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-23 03:58:06,492 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-23 03:58:06,492 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-23 03:58:06,501 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:58:06" (1/1) ... [2022-11-23 03:58:06,502 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:58:06" (1/1) ... [2022-11-23 03:58:06,505 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:58:06" (1/1) ... [2022-11-23 03:58:06,506 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:58:06" (1/1) ... [2022-11-23 03:58:06,515 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:58:06" (1/1) ... [2022-11-23 03:58:06,520 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:58:06" (1/1) ... [2022-11-23 03:58:06,539 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:58:06" (1/1) ... [2022-11-23 03:58:06,541 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:58:06" (1/1) ... [2022-11-23 03:58:06,545 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-23 03:58:06,546 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-23 03:58:06,546 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-23 03:58:06,547 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-23 03:58:06,547 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:58:06" (1/1) ... [2022-11-23 03:58:06,558 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 03:58:06,577 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d1b85f1-359c-4c3a-8f22-30355d94c7d8/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 03:58:06,591 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d1b85f1-359c-4c3a-8f22-30355d94c7d8/bin/uautomizer-QkZJyEgLgS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-23 03:58:06,593 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d1b85f1-359c-4c3a-8f22-30355d94c7d8/bin/uautomizer-QkZJyEgLgS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-23 03:58:06,630 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-23 03:58:06,630 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-23 03:58:06,630 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-23 03:58:06,631 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-23 03:58:06,806 INFO L235 CfgBuilder]: Building ICFG [2022-11-23 03:58:06,810 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-23 03:58:07,689 INFO L276 CfgBuilder]: Performing block encoding [2022-11-23 03:58:07,698 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-23 03:58:07,703 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-23 03:58:07,706 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:58:07 BoogieIcfgContainer [2022-11-23 03:58:07,706 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-23 03:58:07,711 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-23 03:58:07,711 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-23 03:58:07,714 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-23 03:58:07,715 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 03:58:05" (1/3) ... [2022-11-23 03:58:07,715 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70d3d916 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:58:07, skipping insertion in model container [2022-11-23 03:58:07,716 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:58:06" (2/3) ... [2022-11-23 03:58:07,716 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70d3d916 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:58:07, skipping insertion in model container [2022-11-23 03:58:07,716 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:58:07" (3/3) ... [2022-11-23 03:58:07,718 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr.5.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2022-11-23 03:58:07,738 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-23 03:58:07,738 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-23 03:58:07,802 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-23 03:58:07,810 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;@1c65ffad, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 03:58:07,810 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-23 03:58:07,816 INFO L276 IsEmpty]: Start isEmpty. Operand has 149 states, 147 states have (on average 1.7551020408163265) internal successors, (258), 148 states have internal predecessors, (258), 0 states have call successors, (0), 0 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 03:58:07,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-11-23 03:58:07,826 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 03:58:07,827 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 03:58:07,828 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 03:58:07,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:58:07,834 INFO L85 PathProgramCache]: Analyzing trace with hash 1577999170, now seen corresponding path program 1 times [2022-11-23 03:58:07,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:58:07,845 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1624614040] [2022-11-23 03:58:07,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:58:07,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:58:08,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:58:08,683 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 03:58:08,684 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:58:08,684 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1624614040] [2022-11-23 03:58:08,685 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1624614040] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:58:08,685 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 03:58:08,686 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-23 03:58:08,687 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1916731162] [2022-11-23 03:58:08,688 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:58:08,692 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-23 03:58:08,693 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:58:08,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-23 03:58:08,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-23 03:58:08,725 INFO L87 Difference]: Start difference. First operand has 149 states, 147 states have (on average 1.7551020408163265) internal successors, (258), 148 states have internal predecessors, (258), 0 states have call successors, (0), 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 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 7 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 03:58:09,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 03:58:09,212 INFO L93 Difference]: Finished difference Result 832 states and 1345 transitions. [2022-11-23 03:58:09,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-23 03:58:09,214 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 7 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 03:58:09,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 03:58:09,230 INFO L225 Difference]: With dead ends: 832 [2022-11-23 03:58:09,230 INFO L226 Difference]: Without dead ends: 750 [2022-11-23 03:58:09,233 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2022-11-23 03:58:09,236 INFO L413 NwaCegarLoop]: 429 mSDtfsCounter, 1621 mSDsluCounter, 1445 mSDsCounter, 0 mSdLazyCounter, 168 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1621 SdHoareTripleChecker+Valid, 1874 SdHoareTripleChecker+Invalid, 181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 168 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-23 03:58:09,237 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1621 Valid, 1874 Invalid, 181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 168 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-23 03:58:09,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 750 states. [2022-11-23 03:58:09,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 750 to 226. [2022-11-23 03:58:09,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 226 states, 225 states have (on average 1.4622222222222223) internal successors, (329), 225 states have internal predecessors, (329), 0 states have call successors, (0), 0 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 03:58:09,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 329 transitions. [2022-11-23 03:58:09,324 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 329 transitions. Word has length 75 [2022-11-23 03:58:09,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 03:58:09,326 INFO L495 AbstractCegarLoop]: Abstraction has 226 states and 329 transitions. [2022-11-23 03:58:09,326 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 7 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 03:58:09,327 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 329 transitions. [2022-11-23 03:58:09,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-11-23 03:58:09,332 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 03:58:09,332 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 03:58:09,333 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-23 03:58:09,333 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 03:58:09,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:58:09,334 INFO L85 PathProgramCache]: Analyzing trace with hash 1882204162, now seen corresponding path program 1 times [2022-11-23 03:58:09,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:58:09,334 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2140089361] [2022-11-23 03:58:09,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:58:09,335 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:58:09,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:58:09,742 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 03:58:09,742 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:58:09,744 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2140089361] [2022-11-23 03:58:09,744 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2140089361] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:58:09,744 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 03:58:09,744 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-23 03:58:09,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1658046] [2022-11-23 03:58:09,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:58:09,747 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-23 03:58:09,747 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:58:09,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-23 03:58:09,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-23 03:58:09,749 INFO L87 Difference]: Start difference. First operand 226 states and 329 transitions. Second operand has 7 states, 7 states have (on average 11.0) internal successors, (77), 7 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 03:58:10,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 03:58:10,061 INFO L93 Difference]: Finished difference Result 921 states and 1431 transitions. [2022-11-23 03:58:10,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-23 03:58:10,061 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.0) internal successors, (77), 7 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 03:58:10,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 03:58:10,065 INFO L225 Difference]: With dead ends: 921 [2022-11-23 03:58:10,065 INFO L226 Difference]: Without dead ends: 801 [2022-11-23 03:58:10,066 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-11-23 03:58:10,068 INFO L413 NwaCegarLoop]: 388 mSDtfsCounter, 1028 mSDsluCounter, 860 mSDsCounter, 0 mSdLazyCounter, 134 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1028 SdHoareTripleChecker+Valid, 1248 SdHoareTripleChecker+Invalid, 139 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 134 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 03:58:10,068 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1028 Valid, 1248 Invalid, 139 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 134 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 03:58:10,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 801 states. [2022-11-23 03:58:10,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 801 to 355. [2022-11-23 03:58:10,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 355 states, 354 states have (on average 1.5112994350282485) internal successors, (535), 354 states have internal predecessors, (535), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:58:10,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 355 states to 355 states and 535 transitions. [2022-11-23 03:58:10,141 INFO L78 Accepts]: Start accepts. Automaton has 355 states and 535 transitions. Word has length 77 [2022-11-23 03:58:10,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 03:58:10,144 INFO L495 AbstractCegarLoop]: Abstraction has 355 states and 535 transitions. [2022-11-23 03:58:10,144 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.0) internal successors, (77), 7 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 03:58:10,144 INFO L276 IsEmpty]: Start isEmpty. Operand 355 states and 535 transitions. [2022-11-23 03:58:10,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-11-23 03:58:10,146 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 03:58:10,147 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 03:58:10,147 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-23 03:58:10,147 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 03:58:10,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:58:10,149 INFO L85 PathProgramCache]: Analyzing trace with hash -120044916, now seen corresponding path program 1 times [2022-11-23 03:58:10,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:58:10,150 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2031747886] [2022-11-23 03:58:10,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:58:10,151 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:58:10,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:58:10,416 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 03:58:10,416 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:58:10,416 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2031747886] [2022-11-23 03:58:10,416 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2031747886] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:58:10,418 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 03:58:10,418 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-23 03:58:10,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [547101886] [2022-11-23 03:58:10,419 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:58:10,419 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-23 03:58:10,419 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:58:10,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-23 03:58:10,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-23 03:58:10,421 INFO L87 Difference]: Start difference. First operand 355 states and 535 transitions. Second operand has 7 states, 7 states have (on average 11.0) internal successors, (77), 7 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 03:58:10,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 03:58:10,694 INFO L93 Difference]: Finished difference Result 1045 states and 1629 transitions. [2022-11-23 03:58:10,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-23 03:58:10,695 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.0) internal successors, (77), 7 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 03:58:10,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 03:58:10,699 INFO L225 Difference]: With dead ends: 1045 [2022-11-23 03:58:10,699 INFO L226 Difference]: Without dead ends: 925 [2022-11-23 03:58:10,706 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-11-23 03:58:10,711 INFO L413 NwaCegarLoop]: 294 mSDtfsCounter, 1295 mSDsluCounter, 762 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1295 SdHoareTripleChecker+Valid, 1056 SdHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 03:58:10,712 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1295 Valid, 1056 Invalid, 97 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 92 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 03:58:10,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 925 states. [2022-11-23 03:58:10,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 925 to 538. [2022-11-23 03:58:10,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 538 states, 537 states have (on average 1.5400372439478585) internal successors, (827), 537 states have internal predecessors, (827), 0 states have call successors, (0), 0 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 03:58:10,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 538 states to 538 states and 827 transitions. [2022-11-23 03:58:10,795 INFO L78 Accepts]: Start accepts. Automaton has 538 states and 827 transitions. Word has length 77 [2022-11-23 03:58:10,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 03:58:10,796 INFO L495 AbstractCegarLoop]: Abstraction has 538 states and 827 transitions. [2022-11-23 03:58:10,796 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.0) internal successors, (77), 7 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 03:58:10,796 INFO L276 IsEmpty]: Start isEmpty. Operand 538 states and 827 transitions. [2022-11-23 03:58:10,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-11-23 03:58:10,797 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 03:58:10,797 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:58:10,798 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-23 03:58:10,798 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 03:58:10,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:58:10,799 INFO L85 PathProgramCache]: Analyzing trace with hash -1696566079, now seen corresponding path program 1 times [2022-11-23 03:58:10,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:58:10,799 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1774864003] [2022-11-23 03:58:10,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:58:10,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:58:10,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:58:11,159 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 03:58:11,159 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:58:11,159 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1774864003] [2022-11-23 03:58:11,160 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1774864003] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:58:11,160 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 03:58:11,160 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-23 03:58:11,160 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1399677160] [2022-11-23 03:58:11,161 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:58:11,162 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-23 03:58:11,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:58:11,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-23 03:58:11,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-11-23 03:58:11,163 INFO L87 Difference]: Start difference. First operand 538 states and 827 transitions. Second operand has 7 states, 7 states have (on average 11.0) internal successors, (77), 7 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 03:58:11,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 03:58:11,437 INFO L93 Difference]: Finished difference Result 955 states and 1491 transitions. [2022-11-23 03:58:11,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-23 03:58:11,437 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.0) internal successors, (77), 7 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 03:58:11,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 03:58:11,442 INFO L225 Difference]: With dead ends: 955 [2022-11-23 03:58:11,442 INFO L226 Difference]: Without dead ends: 540 [2022-11-23 03:58:11,444 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2022-11-23 03:58:11,454 INFO L413 NwaCegarLoop]: 193 mSDtfsCounter, 352 mSDsluCounter, 615 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 352 SdHoareTripleChecker+Valid, 808 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 03:58:11,455 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [352 Valid, 808 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 03:58:11,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 540 states. [2022-11-23 03:58:11,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 540 to 538. [2022-11-23 03:58:11,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 538 states, 537 states have (on average 1.5325884543761639) internal successors, (823), 537 states have internal predecessors, (823), 0 states have call successors, (0), 0 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 03:58:11,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 538 states to 538 states and 823 transitions. [2022-11-23 03:58:11,528 INFO L78 Accepts]: Start accepts. Automaton has 538 states and 823 transitions. Word has length 77 [2022-11-23 03:58:11,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 03:58:11,530 INFO L495 AbstractCegarLoop]: Abstraction has 538 states and 823 transitions. [2022-11-23 03:58:11,530 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.0) internal successors, (77), 7 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 03:58:11,530 INFO L276 IsEmpty]: Start isEmpty. Operand 538 states and 823 transitions. [2022-11-23 03:58:11,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-11-23 03:58:11,532 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 03:58:11,532 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 03:58:11,532 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-23 03:58:11,533 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 03:58:11,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:58:11,534 INFO L85 PathProgramCache]: Analyzing trace with hash -1904417886, now seen corresponding path program 1 times [2022-11-23 03:58:11,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:58:11,534 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [565814611] [2022-11-23 03:58:11,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:58:11,535 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:58:11,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:58:11,615 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 03:58:11,615 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:58:11,615 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [565814611] [2022-11-23 03:58:11,616 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [565814611] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:58:11,616 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 03:58:11,616 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 03:58:11,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [962800726] [2022-11-23 03:58:11,616 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:58:11,617 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 03:58:11,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:58:11,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 03:58:11,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 03:58:11,618 INFO L87 Difference]: Start difference. First operand 538 states and 823 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 03:58:11,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 03:58:11,840 INFO L93 Difference]: Finished difference Result 1323 states and 2066 transitions. [2022-11-23 03:58:11,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 03:58:11,841 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 03:58:11,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 03:58:11,846 INFO L225 Difference]: With dead ends: 1323 [2022-11-23 03:58:11,846 INFO L226 Difference]: Without dead ends: 908 [2022-11-23 03:58:11,847 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 03:58:11,848 INFO L413 NwaCegarLoop]: 280 mSDtfsCounter, 83 mSDsluCounter, 187 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 467 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-23 03:58:11,848 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [83 Valid, 467 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 03:58:11,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 908 states. [2022-11-23 03:58:12,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 908 to 892. [2022-11-23 03:58:12,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 892 states, 891 states have (on average 1.5387205387205387) internal successors, (1371), 891 states have internal predecessors, (1371), 0 states have call successors, (0), 0 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 03:58:12,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 892 states to 892 states and 1371 transitions. [2022-11-23 03:58:12,006 INFO L78 Accepts]: Start accepts. Automaton has 892 states and 1371 transitions. Word has length 77 [2022-11-23 03:58:12,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 03:58:12,007 INFO L495 AbstractCegarLoop]: Abstraction has 892 states and 1371 transitions. [2022-11-23 03:58:12,007 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 03:58:12,007 INFO L276 IsEmpty]: Start isEmpty. Operand 892 states and 1371 transitions. [2022-11-23 03:58:12,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-11-23 03:58:12,008 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 03:58:12,009 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 03:58:12,009 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-23 03:58:12,009 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 03:58:12,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:58:12,010 INFO L85 PathProgramCache]: Analyzing trace with hash -1745860562, now seen corresponding path program 1 times [2022-11-23 03:58:12,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:58:12,010 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1951426859] [2022-11-23 03:58:12,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:58:12,011 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:58:12,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:58:12,216 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 03:58:12,216 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:58:12,217 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1951426859] [2022-11-23 03:58:12,217 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1951426859] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:58:12,217 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 03:58:12,217 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-23 03:58:12,217 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [454933829] [2022-11-23 03:58:12,218 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:58:12,218 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-23 03:58:12,218 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:58:12,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-23 03:58:12,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-23 03:58:12,219 INFO L87 Difference]: Start difference. First operand 892 states and 1371 transitions. Second operand has 7 states, 7 states have (on average 11.0) internal successors, (77), 7 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 03:58:12,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 03:58:12,678 INFO L93 Difference]: Finished difference Result 2023 states and 3143 transitions. [2022-11-23 03:58:12,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-23 03:58:12,679 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.0) internal successors, (77), 7 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 03:58:12,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 03:58:12,685 INFO L225 Difference]: With dead ends: 2023 [2022-11-23 03:58:12,686 INFO L226 Difference]: Without dead ends: 1802 [2022-11-23 03:58:12,687 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-11-23 03:58:12,688 INFO L413 NwaCegarLoop]: 372 mSDtfsCounter, 1037 mSDsluCounter, 1025 mSDsCounter, 0 mSdLazyCounter, 139 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1037 SdHoareTripleChecker+Valid, 1397 SdHoareTripleChecker+Invalid, 144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 03:58:12,689 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1037 Valid, 1397 Invalid, 144 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 139 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 03:58:12,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1802 states. [2022-11-23 03:58:12,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1802 to 1112. [2022-11-23 03:58:12,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1112 states, 1111 states have (on average 1.5445544554455446) internal successors, (1716), 1111 states have internal predecessors, (1716), 0 states have call successors, (0), 0 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 03:58:12,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1112 states to 1112 states and 1716 transitions. [2022-11-23 03:58:12,881 INFO L78 Accepts]: Start accepts. Automaton has 1112 states and 1716 transitions. Word has length 77 [2022-11-23 03:58:12,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 03:58:12,882 INFO L495 AbstractCegarLoop]: Abstraction has 1112 states and 1716 transitions. [2022-11-23 03:58:12,882 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.0) internal successors, (77), 7 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 03:58:12,882 INFO L276 IsEmpty]: Start isEmpty. Operand 1112 states and 1716 transitions. [2022-11-23 03:58:12,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-11-23 03:58:12,883 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 03:58:12,884 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 03:58:12,884 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-23 03:58:12,884 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 03:58:12,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:58:12,885 INFO L85 PathProgramCache]: Analyzing trace with hash -1856951880, now seen corresponding path program 1 times [2022-11-23 03:58:12,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:58:12,885 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [500039851] [2022-11-23 03:58:12,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:58:12,886 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:58:12,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:58:13,055 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 03:58:13,055 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:58:13,056 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [500039851] [2022-11-23 03:58:13,056 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [500039851] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:58:13,056 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 03:58:13,056 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-23 03:58:13,056 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [640438333] [2022-11-23 03:58:13,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:58:13,057 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-23 03:58:13,057 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:58:13,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-23 03:58:13,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-23 03:58:13,058 INFO L87 Difference]: Start difference. First operand 1112 states and 1716 transitions. Second operand has 7 states, 7 states have (on average 11.0) internal successors, (77), 7 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 03:58:13,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 03:58:13,551 INFO L93 Difference]: Finished difference Result 2253 states and 3504 transitions. [2022-11-23 03:58:13,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-23 03:58:13,551 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.0) internal successors, (77), 7 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 03:58:13,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 03:58:13,559 INFO L225 Difference]: With dead ends: 2253 [2022-11-23 03:58:13,559 INFO L226 Difference]: Without dead ends: 2032 [2022-11-23 03:58:13,560 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-11-23 03:58:13,561 INFO L413 NwaCegarLoop]: 397 mSDtfsCounter, 1080 mSDsluCounter, 1305 mSDsCounter, 0 mSdLazyCounter, 166 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1080 SdHoareTripleChecker+Valid, 1702 SdHoareTripleChecker+Invalid, 171 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 166 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 03:58:13,561 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1080 Valid, 1702 Invalid, 171 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 166 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 03:58:13,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2032 states. [2022-11-23 03:58:13,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2032 to 1347. [2022-11-23 03:58:13,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1347 states, 1346 states have (on average 1.549034175334324) internal successors, (2085), 1346 states have internal predecessors, (2085), 0 states have call successors, (0), 0 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 03:58:13,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1347 states to 1347 states and 2085 transitions. [2022-11-23 03:58:13,808 INFO L78 Accepts]: Start accepts. Automaton has 1347 states and 2085 transitions. Word has length 77 [2022-11-23 03:58:13,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 03:58:13,809 INFO L495 AbstractCegarLoop]: Abstraction has 1347 states and 2085 transitions. [2022-11-23 03:58:13,809 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.0) internal successors, (77), 7 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 03:58:13,809 INFO L276 IsEmpty]: Start isEmpty. Operand 1347 states and 2085 transitions. [2022-11-23 03:58:13,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-11-23 03:58:13,810 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 03:58:13,811 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 03:58:13,811 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-23 03:58:13,811 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 03:58:13,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:58:13,812 INFO L85 PathProgramCache]: Analyzing trace with hash 1646651862, now seen corresponding path program 1 times [2022-11-23 03:58:13,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:58:13,812 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [752688614] [2022-11-23 03:58:13,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:58:13,813 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:58:13,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:58:13,984 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 03:58:13,984 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:58:13,984 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [752688614] [2022-11-23 03:58:13,984 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [752688614] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:58:13,985 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 03:58:13,985 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-23 03:58:13,985 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [653261366] [2022-11-23 03:58:13,985 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:58:13,986 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-23 03:58:13,986 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:58:13,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-23 03:58:13,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-23 03:58:13,987 INFO L87 Difference]: Start difference. First operand 1347 states and 2085 transitions. Second operand has 7 states, 7 states have (on average 11.0) internal successors, (77), 7 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 03:58:14,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 03:58:14,593 INFO L93 Difference]: Finished difference Result 2488 states and 3873 transitions. [2022-11-23 03:58:14,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-23 03:58:14,593 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.0) internal successors, (77), 7 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 03:58:14,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 03:58:14,601 INFO L225 Difference]: With dead ends: 2488 [2022-11-23 03:58:14,602 INFO L226 Difference]: Without dead ends: 2267 [2022-11-23 03:58:14,603 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-11-23 03:58:14,603 INFO L413 NwaCegarLoop]: 318 mSDtfsCounter, 1087 mSDsluCounter, 947 mSDsCounter, 0 mSdLazyCounter, 151 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1087 SdHoareTripleChecker+Valid, 1265 SdHoareTripleChecker+Invalid, 156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 151 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 03:58:14,604 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1087 Valid, 1265 Invalid, 156 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 151 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 03:58:14,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2267 states. [2022-11-23 03:58:14,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2267 to 1582. [2022-11-23 03:58:14,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1582 states, 1581 states have (on average 1.5521821631878558) internal successors, (2454), 1581 states have internal predecessors, (2454), 0 states have call successors, (0), 0 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 03:58:14,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1582 states to 1582 states and 2454 transitions. [2022-11-23 03:58:14,902 INFO L78 Accepts]: Start accepts. Automaton has 1582 states and 2454 transitions. Word has length 77 [2022-11-23 03:58:14,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 03:58:14,902 INFO L495 AbstractCegarLoop]: Abstraction has 1582 states and 2454 transitions. [2022-11-23 03:58:14,903 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.0) internal successors, (77), 7 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 03:58:14,903 INFO L276 IsEmpty]: Start isEmpty. Operand 1582 states and 2454 transitions. [2022-11-23 03:58:14,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-11-23 03:58:14,904 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 03:58:14,906 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] [2022-11-23 03:58:14,906 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-23 03:58:14,906 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 03:58:14,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:58:14,907 INFO L85 PathProgramCache]: Analyzing trace with hash -1055850175, now seen corresponding path program 1 times [2022-11-23 03:58:14,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:58:14,907 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [267247898] [2022-11-23 03:58:14,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:58:14,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:58:14,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:58:15,037 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 03:58:15,038 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:58:15,038 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [267247898] [2022-11-23 03:58:15,038 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [267247898] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:58:15,038 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 03:58:15,038 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-23 03:58:15,039 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1530144344] [2022-11-23 03:58:15,039 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:58:15,039 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 03:58:15,040 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:58:15,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 03:58:15,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-23 03:58:15,041 INFO L87 Difference]: Start difference. First operand 1582 states and 2454 transitions. Second operand has 5 states, 5 states have (on average 15.6) internal successors, (78), 4 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:58:15,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 03:58:15,515 INFO L93 Difference]: Finished difference Result 3127 states and 4870 transitions. [2022-11-23 03:58:15,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-23 03:58:15,516 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.6) internal successors, (78), 4 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2022-11-23 03:58:15,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 03:58:15,522 INFO L225 Difference]: With dead ends: 3127 [2022-11-23 03:58:15,522 INFO L226 Difference]: Without dead ends: 1582 [2022-11-23 03:58:15,526 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 03:58:15,528 INFO L413 NwaCegarLoop]: 107 mSDtfsCounter, 555 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 555 SdHoareTripleChecker+Valid, 111 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 03:58:15,529 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [555 Valid, 111 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 03:58:15,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1582 states. [2022-11-23 03:58:15,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1582 to 1582. [2022-11-23 03:58:15,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1582 states, 1581 states have (on average 1.5351043643263758) internal successors, (2427), 1581 states have internal predecessors, (2427), 0 states have call successors, (0), 0 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 03:58:15,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1582 states to 1582 states and 2427 transitions. [2022-11-23 03:58:15,857 INFO L78 Accepts]: Start accepts. Automaton has 1582 states and 2427 transitions. Word has length 78 [2022-11-23 03:58:15,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 03:58:15,857 INFO L495 AbstractCegarLoop]: Abstraction has 1582 states and 2427 transitions. [2022-11-23 03:58:15,858 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.6) internal successors, (78), 4 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:58:15,858 INFO L276 IsEmpty]: Start isEmpty. Operand 1582 states and 2427 transitions. [2022-11-23 03:58:15,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-11-23 03:58:15,859 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 03:58:15,859 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 03:58:15,859 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-23 03:58:15,860 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 03:58:15,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:58:15,861 INFO L85 PathProgramCache]: Analyzing trace with hash -2025338944, now seen corresponding path program 1 times [2022-11-23 03:58:15,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:58:15,861 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [827771701] [2022-11-23 03:58:15,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:58:15,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:58:15,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:58:15,975 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 03:58:15,976 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:58:15,976 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [827771701] [2022-11-23 03:58:15,976 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [827771701] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:58:15,976 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 03:58:15,976 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-23 03:58:15,977 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1899642107] [2022-11-23 03:58:15,977 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:58:15,977 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 03:58:15,977 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:58:15,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 03:58:15,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-23 03:58:15,978 INFO L87 Difference]: Start difference. First operand 1582 states and 2427 transitions. Second operand has 5 states, 5 states have (on average 15.8) internal successors, (79), 4 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 03:58:16,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 03:58:16,484 INFO L93 Difference]: Finished difference Result 3111 states and 4797 transitions. [2022-11-23 03:58:16,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-23 03:58:16,484 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.8) internal successors, (79), 4 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 03:58:16,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 03:58:16,490 INFO L225 Difference]: With dead ends: 3111 [2022-11-23 03:58:16,490 INFO L226 Difference]: Without dead ends: 1582 [2022-11-23 03:58:16,492 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 03:58:16,494 INFO L413 NwaCegarLoop]: 107 mSDtfsCounter, 504 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 504 SdHoareTripleChecker+Valid, 143 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 03:58:16,495 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [504 Valid, 143 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 03:58:16,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1582 states. [2022-11-23 03:58:16,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1582 to 1582. [2022-11-23 03:58:16,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1582 states, 1581 states have (on average 1.5180265654648957) internal successors, (2400), 1581 states have internal predecessors, (2400), 0 states have call successors, (0), 0 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 03:58:16,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1582 states to 1582 states and 2400 transitions. [2022-11-23 03:58:16,938 INFO L78 Accepts]: Start accepts. Automaton has 1582 states and 2400 transitions. Word has length 79 [2022-11-23 03:58:16,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 03:58:16,938 INFO L495 AbstractCegarLoop]: Abstraction has 1582 states and 2400 transitions. [2022-11-23 03:58:16,938 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.8) internal successors, (79), 4 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 03:58:16,938 INFO L276 IsEmpty]: Start isEmpty. Operand 1582 states and 2400 transitions. [2022-11-23 03:58:16,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-11-23 03:58:16,939 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 03:58:16,940 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] [2022-11-23 03:58:16,940 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-23 03:58:16,940 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 03:58:16,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:58:16,941 INFO L85 PathProgramCache]: Analyzing trace with hash 1784244513, now seen corresponding path program 1 times [2022-11-23 03:58:16,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:58:16,941 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [69669846] [2022-11-23 03:58:16,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:58:16,942 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:58:16,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:58:17,047 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 03:58:17,048 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:58:17,048 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [69669846] [2022-11-23 03:58:17,048 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [69669846] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:58:17,048 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 03:58:17,048 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-23 03:58:17,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [635646435] [2022-11-23 03:58:17,049 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:58:17,049 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 03:58:17,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:58:17,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 03:58:17,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-23 03:58:17,050 INFO L87 Difference]: Start difference. First operand 1582 states and 2400 transitions. Second operand has 5 states, 5 states have (on average 16.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 0 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 03:58:17,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 03:58:17,523 INFO L93 Difference]: Finished difference Result 3115 states and 4748 transitions. [2022-11-23 03:58:17,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-23 03:58:17,524 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 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 80 [2022-11-23 03:58:17,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 03:58:17,530 INFO L225 Difference]: With dead ends: 3115 [2022-11-23 03:58:17,530 INFO L226 Difference]: Without dead ends: 1582 [2022-11-23 03:58:17,532 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 03:58:17,533 INFO L413 NwaCegarLoop]: 107 mSDtfsCounter, 509 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 509 SdHoareTripleChecker+Valid, 135 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 03:58:17,533 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [509 Valid, 135 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 03:58:17,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1582 states. [2022-11-23 03:58:17,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1582 to 1582. [2022-11-23 03:58:17,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1582 states, 1581 states have (on average 1.5009487666034156) internal successors, (2373), 1581 states have internal predecessors, (2373), 0 states have call successors, (0), 0 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 03:58:17,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1582 states to 1582 states and 2373 transitions. [2022-11-23 03:58:17,898 INFO L78 Accepts]: Start accepts. Automaton has 1582 states and 2373 transitions. Word has length 80 [2022-11-23 03:58:17,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 03:58:17,899 INFO L495 AbstractCegarLoop]: Abstraction has 1582 states and 2373 transitions. [2022-11-23 03:58:17,899 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 0 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 03:58:17,899 INFO L276 IsEmpty]: Start isEmpty. Operand 1582 states and 2373 transitions. [2022-11-23 03:58:17,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-11-23 03:58:17,903 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 03:58:17,903 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] [2022-11-23 03:58:17,903 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-23 03:58:17,904 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 03:58:17,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:58:17,904 INFO L85 PathProgramCache]: Analyzing trace with hash -511041836, now seen corresponding path program 1 times [2022-11-23 03:58:17,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:58:17,904 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1009513826] [2022-11-23 03:58:17,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:58:17,905 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:58:17,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:58:18,016 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 03:58:18,017 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:58:18,017 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1009513826] [2022-11-23 03:58:18,017 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1009513826] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:58:18,017 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 03:58:18,017 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-23 03:58:18,018 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1376451972] [2022-11-23 03:58:18,018 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:58:18,018 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 03:58:18,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:58:18,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 03:58:18,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-23 03:58:18,019 INFO L87 Difference]: Start difference. First operand 1582 states and 2373 transitions. Second operand has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 0 states have call successors, (0), 0 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 03:58:18,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 03:58:18,517 INFO L93 Difference]: Finished difference Result 3123 states and 4704 transitions. [2022-11-23 03:58:18,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-23 03:58:18,518 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 0 states have call successors, (0), 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 81 [2022-11-23 03:58:18,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 03:58:18,523 INFO L225 Difference]: With dead ends: 3123 [2022-11-23 03:58:18,524 INFO L226 Difference]: Without dead ends: 1582 [2022-11-23 03:58:18,526 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 03:58:18,527 INFO L413 NwaCegarLoop]: 107 mSDtfsCounter, 525 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 525 SdHoareTripleChecker+Valid, 119 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 89 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 03:58:18,527 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [525 Valid, 119 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 89 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 03:58:18,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1582 states. [2022-11-23 03:58:19,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1582 to 1582. [2022-11-23 03:58:19,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1582 states, 1581 states have (on average 1.4838709677419355) internal successors, (2346), 1581 states have internal predecessors, (2346), 0 states have call successors, (0), 0 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 03:58:19,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1582 states to 1582 states and 2346 transitions. [2022-11-23 03:58:19,050 INFO L78 Accepts]: Start accepts. Automaton has 1582 states and 2346 transitions. Word has length 81 [2022-11-23 03:58:19,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 03:58:19,050 INFO L495 AbstractCegarLoop]: Abstraction has 1582 states and 2346 transitions. [2022-11-23 03:58:19,050 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 0 states have call successors, (0), 0 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 03:58:19,051 INFO L276 IsEmpty]: Start isEmpty. Operand 1582 states and 2346 transitions. [2022-11-23 03:58:19,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2022-11-23 03:58:19,052 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 03:58:19,052 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, 1, 1, 1] [2022-11-23 03:58:19,052 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-23 03:58:19,052 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 03:58:19,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:58:19,053 INFO L85 PathProgramCache]: Analyzing trace with hash -1919227007, now seen corresponding path program 1 times [2022-11-23 03:58:19,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:58:19,053 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [486257279] [2022-11-23 03:58:19,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:58:19,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:58:19,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:58:19,164 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 03:58:19,164 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:58:19,164 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [486257279] [2022-11-23 03:58:19,164 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [486257279] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:58:19,165 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 03:58:19,165 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-23 03:58:19,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1358351570] [2022-11-23 03:58:19,165 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:58:19,166 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 03:58:19,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:58:19,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 03:58:19,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-23 03:58:19,167 INFO L87 Difference]: Start difference. First operand 1582 states and 2346 transitions. Second operand has 5 states, 5 states have (on average 16.4) internal successors, (82), 4 states have internal predecessors, (82), 0 states have call successors, (0), 0 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 03:58:19,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 03:58:19,647 INFO L93 Difference]: Finished difference Result 3119 states and 4646 transitions. [2022-11-23 03:58:19,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-23 03:58:19,648 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.4) internal successors, (82), 4 states have internal predecessors, (82), 0 states have call successors, (0), 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 82 [2022-11-23 03:58:19,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 03:58:19,653 INFO L225 Difference]: With dead ends: 3119 [2022-11-23 03:58:19,654 INFO L226 Difference]: Without dead ends: 1582 [2022-11-23 03:58:19,656 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 03:58:19,657 INFO L413 NwaCegarLoop]: 107 mSDtfsCounter, 507 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 507 SdHoareTripleChecker+Valid, 127 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 03:58:19,657 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [507 Valid, 127 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 03:58:19,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1582 states. [2022-11-23 03:58:20,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1582 to 1582. [2022-11-23 03:58:20,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1582 states, 1581 states have (on average 1.4667931688804554) internal successors, (2319), 1581 states have internal predecessors, (2319), 0 states have call successors, (0), 0 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 03:58:20,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1582 states to 1582 states and 2319 transitions. [2022-11-23 03:58:20,010 INFO L78 Accepts]: Start accepts. Automaton has 1582 states and 2319 transitions. Word has length 82 [2022-11-23 03:58:20,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 03:58:20,011 INFO L495 AbstractCegarLoop]: Abstraction has 1582 states and 2319 transitions. [2022-11-23 03:58:20,011 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.4) internal successors, (82), 4 states have internal predecessors, (82), 0 states have call successors, (0), 0 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 03:58:20,011 INFO L276 IsEmpty]: Start isEmpty. Operand 1582 states and 2319 transitions. [2022-11-23 03:58:20,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-11-23 03:58:20,012 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 03:58:20,012 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] [2022-11-23 03:58:20,013 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-23 03:58:20,013 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 03:58:20,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:58:20,014 INFO L85 PathProgramCache]: Analyzing trace with hash -1274660632, now seen corresponding path program 1 times [2022-11-23 03:58:20,014 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:58:20,014 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [956576667] [2022-11-23 03:58:20,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:58:20,014 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:58:20,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:58:20,276 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 03:58:20,276 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:58:20,276 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [956576667] [2022-11-23 03:58:20,277 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [956576667] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:58:20,277 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 03:58:20,277 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-23 03:58:20,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [823505399] [2022-11-23 03:58:20,277 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:58:20,278 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 03:58:20,278 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:58:20,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 03:58:20,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-23 03:58:20,279 INFO L87 Difference]: Start difference. First operand 1582 states and 2319 transitions. Second operand has 5 states, 5 states have (on average 16.6) internal successors, (83), 5 states have internal predecessors, (83), 0 states have call successors, (0), 0 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 03:58:20,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 03:58:20,946 INFO L93 Difference]: Finished difference Result 2599 states and 3819 transitions. [2022-11-23 03:58:20,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-23 03:58:20,947 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.6) internal successors, (83), 5 states have internal predecessors, (83), 0 states have call successors, (0), 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 83 [2022-11-23 03:58:20,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 03:58:20,955 INFO L225 Difference]: With dead ends: 2599 [2022-11-23 03:58:20,956 INFO L226 Difference]: Without dead ends: 2597 [2022-11-23 03:58:20,956 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-23 03:58:20,957 INFO L413 NwaCegarLoop]: 200 mSDtfsCounter, 168 mSDsluCounter, 573 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 168 SdHoareTripleChecker+Valid, 773 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-23 03:58:20,957 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [168 Valid, 773 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 03:58:20,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2597 states. [2022-11-23 03:58:21,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2597 to 1594. [2022-11-23 03:58:21,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1594 states, 1593 states have (on average 1.4588826114249842) internal successors, (2324), 1593 states have internal predecessors, (2324), 0 states have call successors, (0), 0 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 03:58:21,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1594 states to 1594 states and 2324 transitions. [2022-11-23 03:58:21,393 INFO L78 Accepts]: Start accepts. Automaton has 1594 states and 2324 transitions. Word has length 83 [2022-11-23 03:58:21,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 03:58:21,393 INFO L495 AbstractCegarLoop]: Abstraction has 1594 states and 2324 transitions. [2022-11-23 03:58:21,393 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.6) internal successors, (83), 5 states have internal predecessors, (83), 0 states have call successors, (0), 0 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 03:58:21,394 INFO L276 IsEmpty]: Start isEmpty. Operand 1594 states and 2324 transitions. [2022-11-23 03:58:21,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-11-23 03:58:21,395 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 03:58:21,395 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:58:21,395 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-23 03:58:21,395 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 03:58:21,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:58:21,396 INFO L85 PathProgramCache]: Analyzing trace with hash 1071199524, now seen corresponding path program 1 times [2022-11-23 03:58:21,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:58:21,396 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [506623315] [2022-11-23 03:58:21,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:58:21,397 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:58:21,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:58:21,955 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 03:58:21,956 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:58:21,956 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [506623315] [2022-11-23 03:58:21,956 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [506623315] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:58:21,956 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 03:58:21,957 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-23 03:58:21,957 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [844371156] [2022-11-23 03:58:21,957 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:58:21,957 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-23 03:58:21,958 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:58:21,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-23 03:58:21,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-23 03:58:21,959 INFO L87 Difference]: Start difference. First operand 1594 states and 2324 transitions. Second operand has 9 states, 9 states have (on average 9.222222222222221) internal successors, (83), 8 states have internal predecessors, (83), 0 states have call successors, (0), 0 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 03:58:23,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 03:58:23,535 INFO L93 Difference]: Finished difference Result 4542 states and 6660 transitions. [2022-11-23 03:58:23,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-23 03:58:23,536 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 9.222222222222221) internal successors, (83), 8 states have internal predecessors, (83), 0 states have call successors, (0), 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 83 [2022-11-23 03:58:23,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 03:58:23,546 INFO L225 Difference]: With dead ends: 4542 [2022-11-23 03:58:23,546 INFO L226 Difference]: Without dead ends: 3038 [2022-11-23 03:58:23,550 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2022-11-23 03:58:23,550 INFO L413 NwaCegarLoop]: 102 mSDtfsCounter, 1244 mSDsluCounter, 331 mSDsCounter, 0 mSdLazyCounter, 341 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1244 SdHoareTripleChecker+Valid, 433 SdHoareTripleChecker+Invalid, 345 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 341 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-23 03:58:23,551 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1244 Valid, 433 Invalid, 345 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 341 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-23 03:58:23,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3038 states. [2022-11-23 03:58:24,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3038 to 1594. [2022-11-23 03:58:24,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1594 states, 1593 states have (on average 1.458254865034526) internal successors, (2323), 1593 states have internal predecessors, (2323), 0 states have call successors, (0), 0 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 03:58:24,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1594 states to 1594 states and 2323 transitions. [2022-11-23 03:58:24,100 INFO L78 Accepts]: Start accepts. Automaton has 1594 states and 2323 transitions. Word has length 83 [2022-11-23 03:58:24,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 03:58:24,101 INFO L495 AbstractCegarLoop]: Abstraction has 1594 states and 2323 transitions. [2022-11-23 03:58:24,101 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.222222222222221) internal successors, (83), 8 states have internal predecessors, (83), 0 states have call successors, (0), 0 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 03:58:24,101 INFO L276 IsEmpty]: Start isEmpty. Operand 1594 states and 2323 transitions. [2022-11-23 03:58:24,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-11-23 03:58:24,102 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 03:58:24,102 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] [2022-11-23 03:58:24,103 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-23 03:58:24,103 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 03:58:24,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:58:24,103 INFO L85 PathProgramCache]: Analyzing trace with hash -49884989, now seen corresponding path program 1 times [2022-11-23 03:58:24,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:58:24,104 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1773997602] [2022-11-23 03:58:24,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:58:24,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:58:24,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:58:24,420 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 03:58:24,421 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:58:24,421 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1773997602] [2022-11-23 03:58:24,423 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1773997602] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:58:24,423 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 03:58:24,423 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-23 03:58:24,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [382668948] [2022-11-23 03:58:24,424 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:58:24,424 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-23 03:58:24,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:58:24,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-23 03:58:24,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-11-23 03:58:24,425 INFO L87 Difference]: Start difference. First operand 1594 states and 2323 transitions. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 9 states have internal predecessors, (84), 0 states have call successors, (0), 0 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 03:58:26,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 03:58:26,137 INFO L93 Difference]: Finished difference Result 4649 states and 6799 transitions. [2022-11-23 03:58:26,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-23 03:58:26,138 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 9 states have internal predecessors, (84), 0 states have call successors, (0), 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 84 [2022-11-23 03:58:26,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 03:58:26,150 INFO L225 Difference]: With dead ends: 4649 [2022-11-23 03:58:26,151 INFO L226 Difference]: Without dead ends: 3150 [2022-11-23 03:58:26,154 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=130, Invalid=332, Unknown=0, NotChecked=0, Total=462 [2022-11-23 03:58:26,154 INFO L413 NwaCegarLoop]: 124 mSDtfsCounter, 1198 mSDsluCounter, 311 mSDsCounter, 0 mSdLazyCounter, 401 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1198 SdHoareTripleChecker+Valid, 435 SdHoareTripleChecker+Invalid, 408 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 401 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-23 03:58:26,155 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1198 Valid, 435 Invalid, 408 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 401 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-23 03:58:26,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3150 states. [2022-11-23 03:58:26,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3150 to 1594. [2022-11-23 03:58:26,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1594 states, 1593 states have (on average 1.4569993722536096) internal successors, (2321), 1593 states have internal predecessors, (2321), 0 states have call successors, (0), 0 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 03:58:26,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1594 states to 1594 states and 2321 transitions. [2022-11-23 03:58:26,758 INFO L78 Accepts]: Start accepts. Automaton has 1594 states and 2321 transitions. Word has length 84 [2022-11-23 03:58:26,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 03:58:26,758 INFO L495 AbstractCegarLoop]: Abstraction has 1594 states and 2321 transitions. [2022-11-23 03:58:26,759 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 9 states have internal predecessors, (84), 0 states have call successors, (0), 0 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 03:58:26,759 INFO L276 IsEmpty]: Start isEmpty. Operand 1594 states and 2321 transitions. [2022-11-23 03:58:26,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-11-23 03:58:26,760 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 03:58:26,760 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] [2022-11-23 03:58:26,760 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-23 03:58:26,761 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 03:58:26,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:58:26,761 INFO L85 PathProgramCache]: Analyzing trace with hash 1500586117, now seen corresponding path program 1 times [2022-11-23 03:58:26,762 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:58:26,762 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1600896306] [2022-11-23 03:58:26,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:58:26,762 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:58:26,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:58:27,147 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 03:58:27,147 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:58:27,147 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1600896306] [2022-11-23 03:58:27,148 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1600896306] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:58:27,148 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 03:58:27,148 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-23 03:58:27,148 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1353826070] [2022-11-23 03:58:27,148 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:58:27,149 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-23 03:58:27,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:58:27,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-23 03:58:27,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-11-23 03:58:27,150 INFO L87 Difference]: Start difference. First operand 1594 states and 2321 transitions. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 9 states have internal predecessors, (84), 0 states have call successors, (0), 0 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 03:58:28,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 03:58:28,930 INFO L93 Difference]: Finished difference Result 4634 states and 6773 transitions. [2022-11-23 03:58:28,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-23 03:58:28,931 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 9 states have internal predecessors, (84), 0 states have call successors, (0), 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 84 [2022-11-23 03:58:28,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 03:58:28,942 INFO L225 Difference]: With dead ends: 4634 [2022-11-23 03:58:28,942 INFO L226 Difference]: Without dead ends: 3145 [2022-11-23 03:58:28,944 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=120, Invalid=342, Unknown=0, NotChecked=0, Total=462 [2022-11-23 03:58:28,945 INFO L413 NwaCegarLoop]: 118 mSDtfsCounter, 1277 mSDsluCounter, 430 mSDsCounter, 0 mSdLazyCounter, 499 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1277 SdHoareTripleChecker+Valid, 548 SdHoareTripleChecker+Invalid, 506 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 499 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-23 03:58:28,945 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1277 Valid, 548 Invalid, 506 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 499 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-23 03:58:28,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3145 states. [2022-11-23 03:58:29,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3145 to 1594. [2022-11-23 03:58:29,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1594 states, 1593 states have (on average 1.4544883866917766) internal successors, (2317), 1593 states have internal predecessors, (2317), 0 states have call successors, (0), 0 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 03:58:29,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1594 states to 1594 states and 2317 transitions. [2022-11-23 03:58:29,585 INFO L78 Accepts]: Start accepts. Automaton has 1594 states and 2317 transitions. Word has length 84 [2022-11-23 03:58:29,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 03:58:29,586 INFO L495 AbstractCegarLoop]: Abstraction has 1594 states and 2317 transitions. [2022-11-23 03:58:29,586 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 9 states have internal predecessors, (84), 0 states have call successors, (0), 0 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 03:58:29,586 INFO L276 IsEmpty]: Start isEmpty. Operand 1594 states and 2317 transitions. [2022-11-23 03:58:29,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-11-23 03:58:29,587 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 03:58:29,587 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 03:58:29,588 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-23 03:58:29,588 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 03:58:29,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:58:29,588 INFO L85 PathProgramCache]: Analyzing trace with hash 842057330, now seen corresponding path program 1 times [2022-11-23 03:58:29,589 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:58:29,589 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [692832295] [2022-11-23 03:58:29,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:58:29,589 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:58:29,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:58:29,979 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 03:58:29,979 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:58:29,979 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [692832295] [2022-11-23 03:58:29,979 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [692832295] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:58:29,979 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 03:58:29,979 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-23 03:58:29,980 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1690236474] [2022-11-23 03:58:29,980 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:58:29,980 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-23 03:58:29,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:58:29,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-23 03:58:29,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-11-23 03:58:29,981 INFO L87 Difference]: Start difference. First operand 1594 states and 2317 transitions. Second operand has 10 states, 10 states have (on average 8.5) internal successors, (85), 9 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 03:58:31,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 03:58:31,868 INFO L93 Difference]: Finished difference Result 4604 states and 6721 transitions. [2022-11-23 03:58:31,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-23 03:58:31,868 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 8.5) internal successors, (85), 9 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 03:58:31,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 03:58:31,875 INFO L225 Difference]: With dead ends: 4604 [2022-11-23 03:58:31,876 INFO L226 Difference]: Without dead ends: 3135 [2022-11-23 03:58:31,878 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=126, Invalid=336, Unknown=0, NotChecked=0, Total=462 [2022-11-23 03:58:31,878 INFO L413 NwaCegarLoop]: 116 mSDtfsCounter, 1413 mSDsluCounter, 307 mSDsCounter, 0 mSdLazyCounter, 375 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1413 SdHoareTripleChecker+Valid, 423 SdHoareTripleChecker+Invalid, 382 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 375 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-23 03:58:31,879 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1413 Valid, 423 Invalid, 382 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 375 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-23 03:58:31,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3135 states. [2022-11-23 03:58:32,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3135 to 1594. [2022-11-23 03:58:32,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1594 states, 1593 states have (on average 1.4513496547394853) internal successors, (2312), 1593 states have internal predecessors, (2312), 0 states have call successors, (0), 0 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 03:58:32,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1594 states to 1594 states and 2312 transitions. [2022-11-23 03:58:32,626 INFO L78 Accepts]: Start accepts. Automaton has 1594 states and 2312 transitions. Word has length 85 [2022-11-23 03:58:32,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 03:58:32,627 INFO L495 AbstractCegarLoop]: Abstraction has 1594 states and 2312 transitions. [2022-11-23 03:58:32,627 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.5) internal successors, (85), 9 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 03:58:32,627 INFO L276 IsEmpty]: Start isEmpty. Operand 1594 states and 2312 transitions. [2022-11-23 03:58:32,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-11-23 03:58:32,628 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 03:58:32,628 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 03:58:32,629 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-23 03:58:32,629 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 03:58:32,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:58:32,629 INFO L85 PathProgramCache]: Analyzing trace with hash 2050544046, now seen corresponding path program 1 times [2022-11-23 03:58:32,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:58:32,630 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [238172897] [2022-11-23 03:58:32,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:58:32,630 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:58:32,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:58:33,272 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 03:58:33,272 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:58:33,273 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [238172897] [2022-11-23 03:58:33,273 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [238172897] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:58:33,273 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 03:58:33,273 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-23 03:58:33,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1038697263] [2022-11-23 03:58:33,273 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:58:33,273 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-23 03:58:33,273 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:58:33,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-23 03:58:33,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2022-11-23 03:58:33,274 INFO L87 Difference]: Start difference. First operand 1594 states and 2312 transitions. Second operand has 13 states, 13 states have (on average 6.615384615384615) internal successors, (86), 12 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 03:58:46,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 03:58:46,978 INFO L93 Difference]: Finished difference Result 26935 states and 39005 transitions. [2022-11-23 03:58:46,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-11-23 03:58:46,978 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 6.615384615384615) internal successors, (86), 12 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 03:58:46,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 03:58:47,036 INFO L225 Difference]: With dead ends: 26935 [2022-11-23 03:58:47,036 INFO L226 Difference]: Without dead ends: 25491 [2022-11-23 03:58:47,043 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 834 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=627, Invalid=2025, Unknown=0, NotChecked=0, Total=2652 [2022-11-23 03:58:47,044 INFO L413 NwaCegarLoop]: 202 mSDtfsCounter, 5593 mSDsluCounter, 1132 mSDsCounter, 0 mSdLazyCounter, 1207 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5593 SdHoareTripleChecker+Valid, 1334 SdHoareTripleChecker+Invalid, 1269 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 1207 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-11-23 03:58:47,044 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5593 Valid, 1334 Invalid, 1269 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 1207 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-11-23 03:58:47,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25491 states. [2022-11-23 03:58:48,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25491 to 1609. [2022-11-23 03:58:48,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1609 states, 1608 states have (on average 1.4465174129353233) internal successors, (2326), 1608 states have internal predecessors, (2326), 0 states have call successors, (0), 0 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 03:58:48,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1609 states to 1609 states and 2326 transitions. [2022-11-23 03:58:48,045 INFO L78 Accepts]: Start accepts. Automaton has 1609 states and 2326 transitions. Word has length 86 [2022-11-23 03:58:48,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 03:58:48,045 INFO L495 AbstractCegarLoop]: Abstraction has 1609 states and 2326 transitions. [2022-11-23 03:58:48,046 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.615384615384615) internal successors, (86), 12 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 03:58:48,046 INFO L276 IsEmpty]: Start isEmpty. Operand 1609 states and 2326 transitions. [2022-11-23 03:58:48,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2022-11-23 03:58:48,047 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 03:58:48,047 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 03:58:48,047 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-11-23 03:58:48,048 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 03:58:48,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:58:48,048 INFO L85 PathProgramCache]: Analyzing trace with hash 420822697, now seen corresponding path program 1 times [2022-11-23 03:58:48,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:58:48,048 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1521487687] [2022-11-23 03:58:48,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:58:48,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:58:48,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:58:48,833 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 03:58:48,833 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:58:48,833 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1521487687] [2022-11-23 03:58:48,834 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1521487687] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:58:48,834 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 03:58:48,834 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-11-23 03:58:48,834 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1201586960] [2022-11-23 03:58:48,834 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:58:48,834 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-23 03:58:48,834 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:58:48,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-23 03:58:48,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2022-11-23 03:58:48,835 INFO L87 Difference]: Start difference. First operand 1609 states and 2326 transitions. Second operand has 13 states, 13 states have (on average 6.6923076923076925) internal successors, (87), 13 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 03:58:53,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 03:58:53,468 INFO L93 Difference]: Finished difference Result 6536 states and 9549 transitions. [2022-11-23 03:58:53,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-23 03:58:53,469 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 6.6923076923076925) internal successors, (87), 13 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 03:58:53,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 03:58:53,480 INFO L225 Difference]: With dead ends: 6536 [2022-11-23 03:58:53,480 INFO L226 Difference]: Without dead ends: 6064 [2022-11-23 03:58:53,482 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=153, Invalid=447, Unknown=0, NotChecked=0, Total=600 [2022-11-23 03:58:53,482 INFO L413 NwaCegarLoop]: 300 mSDtfsCounter, 1501 mSDsluCounter, 1377 mSDsCounter, 0 mSdLazyCounter, 309 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1501 SdHoareTripleChecker+Valid, 1677 SdHoareTripleChecker+Invalid, 314 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 309 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-23 03:58:53,483 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1501 Valid, 1677 Invalid, 314 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 309 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-23 03:58:53,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6064 states. [2022-11-23 03:58:54,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6064 to 1595. [2022-11-23 03:58:54,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1595 states, 1594 states have (on average 1.444792973651192) internal successors, (2303), 1594 states have internal predecessors, (2303), 0 states have call successors, (0), 0 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 03:58:54,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1595 states to 1595 states and 2303 transitions. [2022-11-23 03:58:54,574 INFO L78 Accepts]: Start accepts. Automaton has 1595 states and 2303 transitions. Word has length 87 [2022-11-23 03:58:54,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 03:58:54,574 INFO L495 AbstractCegarLoop]: Abstraction has 1595 states and 2303 transitions. [2022-11-23 03:58:54,574 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.6923076923076925) internal successors, (87), 13 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 03:58:54,575 INFO L276 IsEmpty]: Start isEmpty. Operand 1595 states and 2303 transitions. [2022-11-23 03:58:54,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2022-11-23 03:58:54,576 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 03:58:54,576 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 03:58:54,576 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-11-23 03:58:54,576 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 03:58:54,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:58:54,577 INFO L85 PathProgramCache]: Analyzing trace with hash -891179609, now seen corresponding path program 1 times [2022-11-23 03:58:54,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:58:54,577 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [452729126] [2022-11-23 03:58:54,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:58:54,578 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:58:54,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:58:55,677 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 03:58:55,677 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:58:55,677 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [452729126] [2022-11-23 03:58:55,677 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [452729126] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:58:55,678 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 03:58:55,678 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-23 03:58:55,678 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [335688337] [2022-11-23 03:58:55,678 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:58:55,678 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-23 03:58:55,679 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:58:55,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-23 03:58:55,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=299, Unknown=0, NotChecked=0, Total=342 [2022-11-23 03:58:55,679 INFO L87 Difference]: Start difference. First operand 1595 states and 2303 transitions. Second operand has 19 states, 19 states have (on average 4.578947368421052) internal successors, (87), 19 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 03:59:02,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 03:59:02,422 INFO L93 Difference]: Finished difference Result 6389 states and 9331 transitions. [2022-11-23 03:59:02,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-11-23 03:59:02,423 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.578947368421052) internal successors, (87), 19 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 03:59:02,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 03:59:02,430 INFO L225 Difference]: With dead ends: 6389 [2022-11-23 03:59:02,431 INFO L226 Difference]: Without dead ends: 5917 [2022-11-23 03:59:02,433 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 225 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=326, Invalid=1156, Unknown=0, NotChecked=0, Total=1482 [2022-11-23 03:59:02,433 INFO L413 NwaCegarLoop]: 394 mSDtfsCounter, 2026 mSDsluCounter, 3553 mSDsCounter, 0 mSdLazyCounter, 1010 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2026 SdHoareTripleChecker+Valid, 3947 SdHoareTripleChecker+Invalid, 1019 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 1010 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-23 03:59:02,434 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2026 Valid, 3947 Invalid, 1019 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 1010 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-23 03:59:02,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5917 states. [2022-11-23 03:59:03,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5917 to 1595. [2022-11-23 03:59:03,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1595 states, 1594 states have (on average 1.443538268506901) internal successors, (2301), 1594 states have internal predecessors, (2301), 0 states have call successors, (0), 0 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 03:59:03,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1595 states to 1595 states and 2301 transitions. [2022-11-23 03:59:03,809 INFO L78 Accepts]: Start accepts. Automaton has 1595 states and 2301 transitions. Word has length 87 [2022-11-23 03:59:03,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 03:59:03,810 INFO L495 AbstractCegarLoop]: Abstraction has 1595 states and 2301 transitions. [2022-11-23 03:59:03,810 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 4.578947368421052) internal successors, (87), 19 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 03:59:03,810 INFO L276 IsEmpty]: Start isEmpty. Operand 1595 states and 2301 transitions. [2022-11-23 03:59:03,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2022-11-23 03:59:03,811 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 03:59:03,811 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 03:59:03,811 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-11-23 03:59:03,812 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 03:59:03,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:59:03,812 INFO L85 PathProgramCache]: Analyzing trace with hash -359518871, now seen corresponding path program 1 times [2022-11-23 03:59:03,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:59:03,812 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1150701154] [2022-11-23 03:59:03,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:59:03,813 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:59:03,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:59:06,472 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 03:59:06,472 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:59:06,472 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1150701154] [2022-11-23 03:59:06,472 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1150701154] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:59:06,472 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 03:59:06,472 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [34] imperfect sequences [] total 34 [2022-11-23 03:59:06,473 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [441258176] [2022-11-23 03:59:06,473 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:59:06,473 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-11-23 03:59:06,473 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:59:06,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-11-23 03:59:06,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=1027, Unknown=0, NotChecked=0, Total=1122 [2022-11-23 03:59:06,474 INFO L87 Difference]: Start difference. First operand 1595 states and 2301 transitions. Second operand has 34 states, 34 states have (on average 2.5588235294117645) internal successors, (87), 34 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 03:59:22,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 03:59:22,978 INFO L93 Difference]: Finished difference Result 10530 states and 15415 transitions. [2022-11-23 03:59:22,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-11-23 03:59:22,978 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 2.5588235294117645) internal successors, (87), 34 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 03:59:22,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 03:59:22,990 INFO L225 Difference]: With dead ends: 10530 [2022-11-23 03:59:22,990 INFO L226 Difference]: Without dead ends: 10306 [2022-11-23 03:59:22,994 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 680 ImplicationChecksByTransitivity, 5.3s TimeCoverageRelationStatistics Valid=641, Invalid=3649, Unknown=0, NotChecked=0, Total=4290 [2022-11-23 03:59:22,995 INFO L413 NwaCegarLoop]: 539 mSDtfsCounter, 2256 mSDsluCounter, 11113 mSDsCounter, 0 mSdLazyCounter, 6605 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2256 SdHoareTripleChecker+Valid, 11652 SdHoareTripleChecker+Invalid, 6632 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 6605 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2022-11-23 03:59:22,995 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2256 Valid, 11652 Invalid, 6632 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [27 Valid, 6605 Invalid, 0 Unknown, 0 Unchecked, 4.9s Time] [2022-11-23 03:59:23,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10306 states. [2022-11-23 03:59:24,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10306 to 1613. [2022-11-23 03:59:24,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1613 states, 1612 states have (on average 1.4416873449131513) internal successors, (2324), 1612 states have internal predecessors, (2324), 0 states have call successors, (0), 0 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 03:59:24,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1613 states to 1613 states and 2324 transitions. [2022-11-23 03:59:24,361 INFO L78 Accepts]: Start accepts. Automaton has 1613 states and 2324 transitions. Word has length 87 [2022-11-23 03:59:24,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 03:59:24,362 INFO L495 AbstractCegarLoop]: Abstraction has 1613 states and 2324 transitions. [2022-11-23 03:59:24,362 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 2.5588235294117645) internal successors, (87), 34 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 03:59:24,362 INFO L276 IsEmpty]: Start isEmpty. Operand 1613 states and 2324 transitions. [2022-11-23 03:59:24,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2022-11-23 03:59:24,363 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 03:59:24,363 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 03:59:24,363 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-11-23 03:59:24,364 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 03:59:24,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:59:24,364 INFO L85 PathProgramCache]: Analyzing trace with hash 633451142, now seen corresponding path program 1 times [2022-11-23 03:59:24,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:59:24,365 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2053235786] [2022-11-23 03:59:24,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:59:24,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:59:24,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:59:24,933 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 03:59:24,934 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:59:24,934 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2053235786] [2022-11-23 03:59:24,934 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2053235786] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:59:24,934 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 03:59:24,934 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-23 03:59:24,934 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2042820554] [2022-11-23 03:59:24,934 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:59:24,935 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-23 03:59:24,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:59:24,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-23 03:59:24,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2022-11-23 03:59:24,935 INFO L87 Difference]: Start difference. First operand 1613 states and 2324 transitions. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 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 03:59:33,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 03:59:33,617 INFO L93 Difference]: Finished difference Result 9313 states and 13631 transitions. [2022-11-23 03:59:33,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-23 03:59:33,617 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 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 03:59:33,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 03:59:33,624 INFO L225 Difference]: With dead ends: 9313 [2022-11-23 03:59:33,624 INFO L226 Difference]: Without dead ends: 8826 [2022-11-23 03:59:33,626 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=173, Invalid=427, Unknown=0, NotChecked=0, Total=600 [2022-11-23 03:59:33,627 INFO L413 NwaCegarLoop]: 274 mSDtfsCounter, 1850 mSDsluCounter, 1024 mSDsCounter, 0 mSdLazyCounter, 259 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1850 SdHoareTripleChecker+Valid, 1298 SdHoareTripleChecker+Invalid, 263 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 259 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-23 03:59:33,627 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1850 Valid, 1298 Invalid, 263 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 259 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-23 03:59:33,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8826 states. [2022-11-23 03:59:35,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8826 to 1576. [2022-11-23 03:59:35,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1576 states, 1575 states have (on average 1.4444444444444444) internal successors, (2275), 1575 states have internal predecessors, (2275), 0 states have call successors, (0), 0 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 03:59:35,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1576 states to 1576 states and 2275 transitions. [2022-11-23 03:59:35,272 INFO L78 Accepts]: Start accepts. Automaton has 1576 states and 2275 transitions. Word has length 87 [2022-11-23 03:59:35,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 03:59:35,273 INFO L495 AbstractCegarLoop]: Abstraction has 1576 states and 2275 transitions. [2022-11-23 03:59:35,273 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 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 03:59:35,273 INFO L276 IsEmpty]: Start isEmpty. Operand 1576 states and 2275 transitions. [2022-11-23 03:59:35,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-11-23 03:59:35,274 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 03:59:35,274 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 03:59:35,274 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-11-23 03:59:35,275 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 03:59:35,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:59:35,275 INFO L85 PathProgramCache]: Analyzing trace with hash 377130840, now seen corresponding path program 1 times [2022-11-23 03:59:35,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:59:35,275 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [189043266] [2022-11-23 03:59:35,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:59:35,276 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:59:35,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:59:35,907 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 03:59:35,908 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:59:35,908 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [189043266] [2022-11-23 03:59:35,908 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [189043266] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:59:35,908 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 03:59:35,908 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-11-23 03:59:35,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [123816041] [2022-11-23 03:59:35,908 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:59:35,908 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-23 03:59:35,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:59:35,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-23 03:59:35,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2022-11-23 03:59:35,909 INFO L87 Difference]: Start difference. First operand 1576 states and 2275 transitions. Second operand has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 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 03:59:49,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 03:59:49,086 INFO L93 Difference]: Finished difference Result 12101 states and 17745 transitions. [2022-11-23 03:59:49,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-23 03:59:49,087 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 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 03:59:49,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 03:59:49,096 INFO L225 Difference]: With dead ends: 12101 [2022-11-23 03:59:49,096 INFO L226 Difference]: Without dead ends: 11655 [2022-11-23 03:59:49,099 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 149 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=214, Invalid=716, Unknown=0, NotChecked=0, Total=930 [2022-11-23 03:59:49,099 INFO L413 NwaCegarLoop]: 319 mSDtfsCounter, 2125 mSDsluCounter, 1926 mSDsCounter, 0 mSdLazyCounter, 498 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2125 SdHoareTripleChecker+Valid, 2245 SdHoareTripleChecker+Invalid, 504 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 498 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-23 03:59:49,099 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2125 Valid, 2245 Invalid, 504 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 498 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-23 03:59:49,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11655 states. [2022-11-23 03:59:50,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11655 to 1557. [2022-11-23 03:59:50,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1557 states, 1556 states have (on average 1.4440874035989717) internal successors, (2247), 1556 states have internal predecessors, (2247), 0 states have call successors, (0), 0 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 03:59:50,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1557 states to 1557 states and 2247 transitions. [2022-11-23 03:59:50,658 INFO L78 Accepts]: Start accepts. Automaton has 1557 states and 2247 transitions. Word has length 88 [2022-11-23 03:59:50,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 03:59:50,658 INFO L495 AbstractCegarLoop]: Abstraction has 1557 states and 2247 transitions. [2022-11-23 03:59:50,659 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 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 03:59:50,659 INFO L276 IsEmpty]: Start isEmpty. Operand 1557 states and 2247 transitions. [2022-11-23 03:59:50,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-11-23 03:59:50,660 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 03:59:50,660 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 03:59:50,660 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-11-23 03:59:50,660 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 03:59:50,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:59:50,661 INFO L85 PathProgramCache]: Analyzing trace with hash -2099303399, now seen corresponding path program 1 times [2022-11-23 03:59:50,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:59:50,661 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1616109759] [2022-11-23 03:59:50,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:59:50,661 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:59:50,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:59:51,256 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 03:59:51,256 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:59:51,256 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1616109759] [2022-11-23 03:59:51,256 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1616109759] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:59:51,256 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 03:59:51,256 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-11-23 03:59:51,256 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [44731318] [2022-11-23 03:59:51,257 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:59:51,257 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-23 03:59:51,257 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:59:51,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-23 03:59:51,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2022-11-23 03:59:51,257 INFO L87 Difference]: Start difference. First operand 1557 states and 2247 transitions. Second operand has 13 states, 13 states have (on average 6.769230769230769) internal successors, (88), 13 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 03:59:58,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 03:59:58,887 INFO L93 Difference]: Finished difference Result 6395 states and 9342 transitions. [2022-11-23 03:59:58,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-23 03:59:58,888 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 6.769230769230769) internal successors, (88), 13 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 03:59:58,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 03:59:58,892 INFO L225 Difference]: With dead ends: 6395 [2022-11-23 03:59:58,892 INFO L226 Difference]: Without dead ends: 5926 [2022-11-23 03:59:58,893 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=154, Invalid=446, Unknown=0, NotChecked=0, Total=600 [2022-11-23 03:59:58,894 INFO L413 NwaCegarLoop]: 465 mSDtfsCounter, 1028 mSDsluCounter, 1791 mSDsCounter, 0 mSdLazyCounter, 376 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1028 SdHoareTripleChecker+Valid, 2256 SdHoareTripleChecker+Invalid, 380 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 376 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-23 03:59:58,894 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1028 Valid, 2256 Invalid, 380 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 376 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-23 03:59:58,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5926 states. [2022-11-23 04:00:00,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5926 to 1532. [2022-11-23 04:00:00,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1532 states, 1531 states have (on average 1.4474199869366426) internal successors, (2216), 1531 states have internal predecessors, (2216), 0 states have call successors, (0), 0 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 04:00:00,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1532 states to 1532 states and 2216 transitions. [2022-11-23 04:00:00,537 INFO L78 Accepts]: Start accepts. Automaton has 1532 states and 2216 transitions. Word has length 88 [2022-11-23 04:00:00,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 04:00:00,537 INFO L495 AbstractCegarLoop]: Abstraction has 1532 states and 2216 transitions. [2022-11-23 04:00:00,538 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.769230769230769) internal successors, (88), 13 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 04:00:00,538 INFO L276 IsEmpty]: Start isEmpty. Operand 1532 states and 2216 transitions. [2022-11-23 04:00:00,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-11-23 04:00:00,538 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 04:00:00,538 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 04:00:00,539 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-11-23 04:00:00,539 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 04:00:00,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 04:00:00,539 INFO L85 PathProgramCache]: Analyzing trace with hash -1915986027, now seen corresponding path program 1 times [2022-11-23 04:00:00,539 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 04:00:00,540 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1261009030] [2022-11-23 04:00:00,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 04:00:00,540 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 04:00:00,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 04:00:00,675 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 04:00:00,675 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 04:00:00,675 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1261009030] [2022-11-23 04:00:00,675 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1261009030] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 04:00:00,675 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 04:00:00,675 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-23 04:00:00,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [490509307] [2022-11-23 04:00:00,676 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 04:00:00,676 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 04:00:00,677 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 04:00:00,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 04:00:00,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-23 04:00:00,677 INFO L87 Difference]: Start difference. First operand 1532 states and 2216 transitions. Second operand has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 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 04:00:03,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 04:00:03,013 INFO L93 Difference]: Finished difference Result 3561 states and 5201 transitions. [2022-11-23 04:00:03,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-23 04:00:03,013 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 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 04:00:03,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 04:00:03,015 INFO L225 Difference]: With dead ends: 3561 [2022-11-23 04:00:03,015 INFO L226 Difference]: Without dead ends: 2123 [2022-11-23 04:00:03,017 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-23 04:00:03,018 INFO L413 NwaCegarLoop]: 177 mSDtfsCounter, 89 mSDsluCounter, 256 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 433 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-23 04:00:03,018 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [89 Valid, 433 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 04:00:03,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2123 states. [2022-11-23 04:00:05,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2123 to 2110. [2022-11-23 04:00:05,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2110 states, 2109 states have (on average 1.444760550023708) internal successors, (3047), 2109 states have internal predecessors, (3047), 0 states have call successors, (0), 0 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 04:00:05,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2110 states to 2110 states and 3047 transitions. [2022-11-23 04:00:05,313 INFO L78 Accepts]: Start accepts. Automaton has 2110 states and 3047 transitions. Word has length 88 [2022-11-23 04:00:05,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 04:00:05,313 INFO L495 AbstractCegarLoop]: Abstraction has 2110 states and 3047 transitions. [2022-11-23 04:00:05,313 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 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 04:00:05,314 INFO L276 IsEmpty]: Start isEmpty. Operand 2110 states and 3047 transitions. [2022-11-23 04:00:05,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-11-23 04:00:05,314 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 04:00:05,314 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 04:00:05,314 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-11-23 04:00:05,315 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 04:00:05,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 04:00:05,315 INFO L85 PathProgramCache]: Analyzing trace with hash -1312135, now seen corresponding path program 1 times [2022-11-23 04:00:05,315 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 04:00:05,316 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1327282505] [2022-11-23 04:00:05,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 04:00:05,316 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 04:00:05,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 04:00:07,509 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 04:00:07,509 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 04:00:07,509 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1327282505] [2022-11-23 04:00:07,510 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1327282505] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 04:00:07,510 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 04:00:07,510 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2022-11-23 04:00:07,510 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1254424726] [2022-11-23 04:00:07,510 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 04:00:07,510 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-11-23 04:00:07,511 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 04:00:07,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-11-23 04:00:07,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=896, Unknown=0, NotChecked=0, Total=992 [2022-11-23 04:00:07,511 INFO L87 Difference]: Start difference. First operand 2110 states and 3047 transitions. Second operand has 32 states, 32 states have (on average 2.75) internal successors, (88), 32 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 04:00:33,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 04:00:33,631 INFO L93 Difference]: Finished difference Result 15634 states and 22777 transitions. [2022-11-23 04:00:33,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-11-23 04:00:33,632 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 2.75) internal successors, (88), 32 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 04:00:33,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 04:00:33,645 INFO L225 Difference]: With dead ends: 15634 [2022-11-23 04:00:33,645 INFO L226 Difference]: Without dead ends: 14979 [2022-11-23 04:00:33,648 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 612 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=568, Invalid=2972, Unknown=0, NotChecked=0, Total=3540 [2022-11-23 04:00:33,648 INFO L413 NwaCegarLoop]: 687 mSDtfsCounter, 1622 mSDsluCounter, 10791 mSDsCounter, 0 mSdLazyCounter, 7012 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1622 SdHoareTripleChecker+Valid, 11478 SdHoareTripleChecker+Invalid, 7033 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 7012 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.6s IncrementalHoareTripleChecker+Time [2022-11-23 04:00:33,648 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1622 Valid, 11478 Invalid, 7033 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [21 Valid, 7012 Invalid, 0 Unknown, 0 Unchecked, 5.6s Time] [2022-11-23 04:00:33,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14979 states. [2022-11-23 04:00:36,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14979 to 2127. [2022-11-23 04:00:36,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2127 states, 2126 states have (on average 1.4430856067732831) internal successors, (3068), 2126 states have internal predecessors, (3068), 0 states have call successors, (0), 0 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 04:00:36,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2127 states to 2127 states and 3068 transitions. [2022-11-23 04:00:36,081 INFO L78 Accepts]: Start accepts. Automaton has 2127 states and 3068 transitions. Word has length 88 [2022-11-23 04:00:36,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 04:00:36,081 INFO L495 AbstractCegarLoop]: Abstraction has 2127 states and 3068 transitions. [2022-11-23 04:00:36,081 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 2.75) internal successors, (88), 32 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 04:00:36,081 INFO L276 IsEmpty]: Start isEmpty. Operand 2127 states and 3068 transitions. [2022-11-23 04:00:36,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2022-11-23 04:00:36,082 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 04:00:36,082 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] [2022-11-23 04:00:36,082 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-11-23 04:00:36,082 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 04:00:36,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 04:00:36,082 INFO L85 PathProgramCache]: Analyzing trace with hash 316975013, now seen corresponding path program 1 times [2022-11-23 04:00:36,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 04:00:36,083 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1556786648] [2022-11-23 04:00:36,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 04:00:36,083 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 04:00:36,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 04:00:36,740 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 04:00:36,740 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 04:00:36,740 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1556786648] [2022-11-23 04:00:36,740 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1556786648] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 04:00:36,740 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 04:00:36,740 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-11-23 04:00:36,740 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1046811612] [2022-11-23 04:00:36,740 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 04:00:36,741 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-23 04:00:36,741 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 04:00:36,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-23 04:00:36,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2022-11-23 04:00:36,742 INFO L87 Difference]: Start difference. First operand 2127 states and 3068 transitions. Second operand has 14 states, 14 states have (on average 6.357142857142857) internal successors, (89), 14 states have internal predecessors, (89), 0 states have call successors, (0), 0 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 04:00:53,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 04:00:53,122 INFO L93 Difference]: Finished difference Result 12881 states and 18775 transitions. [2022-11-23 04:00:53,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-23 04:00:53,123 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 6.357142857142857) internal successors, (89), 14 states have internal predecessors, (89), 0 states have call successors, (0), 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 89 [2022-11-23 04:00:53,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 04:00:53,134 INFO L225 Difference]: With dead ends: 12881 [2022-11-23 04:00:53,135 INFO L226 Difference]: Without dead ends: 12217 [2022-11-23 04:00:53,137 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 148 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=214, Invalid=716, Unknown=0, NotChecked=0, Total=930 [2022-11-23 04:00:53,137 INFO L413 NwaCegarLoop]: 417 mSDtfsCounter, 1114 mSDsluCounter, 2874 mSDsCounter, 0 mSdLazyCounter, 604 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1114 SdHoareTripleChecker+Valid, 3291 SdHoareTripleChecker+Invalid, 609 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 604 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-23 04:00:53,138 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1114 Valid, 3291 Invalid, 609 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 604 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-23 04:00:53,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12217 states. [2022-11-23 04:00:55,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12217 to 2104. [2022-11-23 04:00:55,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2104 states, 2103 states have (on average 1.4450784593437946) internal successors, (3039), 2103 states have internal predecessors, (3039), 0 states have call successors, (0), 0 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 04:00:56,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2104 states to 2104 states and 3039 transitions. [2022-11-23 04:00:56,002 INFO L78 Accepts]: Start accepts. Automaton has 2104 states and 3039 transitions. Word has length 89 [2022-11-23 04:00:56,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 04:00:56,003 INFO L495 AbstractCegarLoop]: Abstraction has 2104 states and 3039 transitions. [2022-11-23 04:00:56,003 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.357142857142857) internal successors, (89), 14 states have internal predecessors, (89), 0 states have call successors, (0), 0 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 04:00:56,003 INFO L276 IsEmpty]: Start isEmpty. Operand 2104 states and 3039 transitions. [2022-11-23 04:00:56,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2022-11-23 04:00:56,005 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 04:00:56,005 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 04:00:56,005 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-11-23 04:00:56,005 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 04:00:56,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 04:00:56,006 INFO L85 PathProgramCache]: Analyzing trace with hash 1743887154, now seen corresponding path program 1 times [2022-11-23 04:00:56,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 04:00:56,006 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [212940965] [2022-11-23 04:00:56,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 04:00:56,007 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 04:00:56,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 04:00:56,107 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 04:00:56,108 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 04:00:56,108 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [212940965] [2022-11-23 04:00:56,108 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [212940965] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 04:00:56,108 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 04:00:56,108 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 04:00:56,108 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [226262719] [2022-11-23 04:00:56,109 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 04:00:56,109 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 04:00:56,109 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 04:00:56,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 04:00:56,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 04:00:56,110 INFO L87 Difference]: Start difference. First operand 2104 states and 3039 transitions. Second operand has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 0 states have call successors, (0), 0 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 04:01:00,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 04:01:00,365 INFO L93 Difference]: Finished difference Result 4356 states and 6332 transitions. [2022-11-23 04:01:00,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 04:01:00,365 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 0 states have call successors, (0), 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 116 [2022-11-23 04:01:00,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 04:01:00,368 INFO L225 Difference]: With dead ends: 4356 [2022-11-23 04:01:00,369 INFO L226 Difference]: Without dead ends: 2917 [2022-11-23 04:01:00,370 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 04:01:00,371 INFO L413 NwaCegarLoop]: 246 mSDtfsCounter, 82 mSDsluCounter, 147 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 393 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-23 04:01:00,371 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [82 Valid, 393 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 04:01:00,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2917 states. [2022-11-23 04:01:03,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2917 to 2807. [2022-11-23 04:01:03,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2807 states, 2806 states have (on average 1.444761225944405) internal successors, (4054), 2806 states have internal predecessors, (4054), 0 states have call successors, (0), 0 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 04:01:03,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2807 states to 2807 states and 4054 transitions. [2022-11-23 04:01:03,915 INFO L78 Accepts]: Start accepts. Automaton has 2807 states and 4054 transitions. Word has length 116 [2022-11-23 04:01:03,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 04:01:03,915 INFO L495 AbstractCegarLoop]: Abstraction has 2807 states and 4054 transitions. [2022-11-23 04:01:03,916 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 0 states have call successors, (0), 0 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 04:01:03,916 INFO L276 IsEmpty]: Start isEmpty. Operand 2807 states and 4054 transitions. [2022-11-23 04:01:03,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2022-11-23 04:01:03,916 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 04:01:03,917 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 04:01:03,917 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-11-23 04:01:03,917 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 04:01:03,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 04:01:03,918 INFO L85 PathProgramCache]: Analyzing trace with hash 1636203635, now seen corresponding path program 1 times [2022-11-23 04:01:03,918 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 04:01:03,918 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1636943747] [2022-11-23 04:01:03,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 04:01:03,918 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 04:01:03,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 04:01:04,054 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 04:01:04,054 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 04:01:04,054 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1636943747] [2022-11-23 04:01:04,055 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1636943747] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 04:01:04,055 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 04:01:04,055 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-23 04:01:04,055 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [728411487] [2022-11-23 04:01:04,055 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 04:01:04,056 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-23 04:01:04,056 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 04:01:04,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-23 04:01:04,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-23 04:01:04,056 INFO L87 Difference]: Start difference. First operand 2807 states and 4054 transitions. Second operand has 7 states, 7 states have (on average 16.571428571428573) internal successors, (116), 6 states have internal predecessors, (116), 0 states have call successors, (0), 0 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 04:01:20,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 04:01:20,213 INFO L93 Difference]: Finished difference Result 14951 states and 21662 transitions. [2022-11-23 04:01:20,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-23 04:01:20,214 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.571428571428573) internal successors, (116), 6 states have internal predecessors, (116), 0 states have call successors, (0), 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 116 [2022-11-23 04:01:20,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 04:01:20,229 INFO L225 Difference]: With dead ends: 14951 [2022-11-23 04:01:20,229 INFO L226 Difference]: Without dead ends: 12240 [2022-11-23 04:01:20,233 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 04:01:20,234 INFO L413 NwaCegarLoop]: 125 mSDtfsCounter, 1524 mSDsluCounter, 237 mSDsCounter, 0 mSdLazyCounter, 270 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1524 SdHoareTripleChecker+Valid, 362 SdHoareTripleChecker+Invalid, 293 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 270 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-23 04:01:20,234 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1524 Valid, 362 Invalid, 293 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 270 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-23 04:01:20,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12240 states. [2022-11-23 04:01:27,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12240 to 6016. [2022-11-23 04:01:27,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6016 states, 6015 states have (on average 1.4472152950955943) internal successors, (8705), 6015 states have internal predecessors, (8705), 0 states have call successors, (0), 0 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 04:01:27,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6016 states to 6016 states and 8705 transitions. [2022-11-23 04:01:27,613 INFO L78 Accepts]: Start accepts. Automaton has 6016 states and 8705 transitions. Word has length 116 [2022-11-23 04:01:27,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 04:01:27,614 INFO L495 AbstractCegarLoop]: Abstraction has 6016 states and 8705 transitions. [2022-11-23 04:01:27,614 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.571428571428573) internal successors, (116), 6 states have internal predecessors, (116), 0 states have call successors, (0), 0 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 04:01:27,614 INFO L276 IsEmpty]: Start isEmpty. Operand 6016 states and 8705 transitions. [2022-11-23 04:01:27,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2022-11-23 04:01:27,615 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 04:01:27,615 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 04:01:27,615 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-11-23 04:01:27,615 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 04:01:27,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 04:01:27,616 INFO L85 PathProgramCache]: Analyzing trace with hash 2144971769, now seen corresponding path program 1 times [2022-11-23 04:01:27,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 04:01:27,616 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [485258696] [2022-11-23 04:01:27,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 04:01:27,616 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 04:01:27,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 04:01:27,741 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 04:01:27,742 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 04:01:27,742 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [485258696] [2022-11-23 04:01:27,742 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [485258696] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 04:01:27,742 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 04:01:27,742 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-23 04:01:27,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [975660850] [2022-11-23 04:01:27,743 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 04:01:27,743 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-23 04:01:27,743 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 04:01:27,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-23 04:01:27,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-23 04:01:27,744 INFO L87 Difference]: Start difference. First operand 6016 states and 8705 transitions. Second operand has 7 states, 7 states have (on average 16.571428571428573) internal successors, (116), 6 states have internal predecessors, (116), 0 states have call successors, (0), 0 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 04:01:58,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 04:01:58,642 INFO L93 Difference]: Finished difference Result 30296 states and 43717 transitions. [2022-11-23 04:01:58,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-23 04:01:58,643 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.571428571428573) internal successors, (116), 6 states have internal predecessors, (116), 0 states have call successors, (0), 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 116 [2022-11-23 04:01:58,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 04:01:58,666 INFO L225 Difference]: With dead ends: 30296 [2022-11-23 04:01:58,666 INFO L226 Difference]: Without dead ends: 24376 [2022-11-23 04:01:58,672 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 04:01:58,672 INFO L413 NwaCegarLoop]: 131 mSDtfsCounter, 1357 mSDsluCounter, 235 mSDsCounter, 0 mSdLazyCounter, 270 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1357 SdHoareTripleChecker+Valid, 366 SdHoareTripleChecker+Invalid, 293 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 270 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-23 04:01:58,673 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1357 Valid, 366 Invalid, 293 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 270 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-23 04:01:58,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24376 states. [2022-11-23 04:02:13,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24376 to 12934. [2022-11-23 04:02:13,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12934 states, 12933 states have (on average 1.4464548055362252) internal successors, (18707), 12933 states have internal predecessors, (18707), 0 states have call successors, (0), 0 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 04:02:13,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12934 states to 12934 states and 18707 transitions. [2022-11-23 04:02:13,886 INFO L78 Accepts]: Start accepts. Automaton has 12934 states and 18707 transitions. Word has length 116 [2022-11-23 04:02:13,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 04:02:13,886 INFO L495 AbstractCegarLoop]: Abstraction has 12934 states and 18707 transitions. [2022-11-23 04:02:13,886 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.571428571428573) internal successors, (116), 6 states have internal predecessors, (116), 0 states have call successors, (0), 0 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 04:02:13,887 INFO L276 IsEmpty]: Start isEmpty. Operand 12934 states and 18707 transitions. [2022-11-23 04:02:13,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2022-11-23 04:02:13,888 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 04:02:13,888 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 04:02:13,888 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-11-23 04:02:13,888 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 04:02:13,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 04:02:13,889 INFO L85 PathProgramCache]: Analyzing trace with hash 531272813, now seen corresponding path program 1 times [2022-11-23 04:02:13,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 04:02:13,889 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [162328014] [2022-11-23 04:02:13,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 04:02:13,890 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 04:02:13,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 04:02:14,113 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 04:02:14,113 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 04:02:14,113 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [162328014] [2022-11-23 04:02:14,114 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [162328014] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 04:02:14,114 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 04:02:14,114 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-23 04:02:14,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1779142471] [2022-11-23 04:02:14,114 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 04:02:14,115 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-23 04:02:14,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 04:02:14,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-23 04:02:14,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-23 04:02:14,116 INFO L87 Difference]: Start difference. First operand 12934 states and 18707 transitions. Second operand has 7 states, 7 states have (on average 16.571428571428573) internal successors, (116), 6 states have internal predecessors, (116), 0 states have call successors, (0), 0 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 04:03:10,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 04:03:10,670 INFO L93 Difference]: Finished difference Result 60050 states and 86923 transitions. [2022-11-23 04:03:10,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-23 04:03:10,671 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.571428571428573) internal successors, (116), 6 states have internal predecessors, (116), 0 states have call successors, (0), 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 116 [2022-11-23 04:03:10,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 04:03:10,725 INFO L225 Difference]: With dead ends: 60050 [2022-11-23 04:03:10,725 INFO L226 Difference]: Without dead ends: 47212 [2022-11-23 04:03:10,737 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 04:03:10,738 INFO L413 NwaCegarLoop]: 117 mSDtfsCounter, 1699 mSDsluCounter, 239 mSDsCounter, 0 mSdLazyCounter, 270 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1699 SdHoareTripleChecker+Valid, 356 SdHoareTripleChecker+Invalid, 293 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 270 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-23 04:03:10,738 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1699 Valid, 356 Invalid, 293 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 270 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-23 04:03:10,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47212 states. [2022-11-23 04:03:43,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47212 to 27770. [2022-11-23 04:03:43,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27770 states, 27769 states have (on average 1.4444524469732436) internal successors, (40111), 27769 states have internal predecessors, (40111), 0 states have call successors, (0), 0 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 04:03:43,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27770 states to 27770 states and 40111 transitions. [2022-11-23 04:03:43,925 INFO L78 Accepts]: Start accepts. Automaton has 27770 states and 40111 transitions. Word has length 116 [2022-11-23 04:03:43,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 04:03:43,925 INFO L495 AbstractCegarLoop]: Abstraction has 27770 states and 40111 transitions. [2022-11-23 04:03:43,926 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.571428571428573) internal successors, (116), 6 states have internal predecessors, (116), 0 states have call successors, (0), 0 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 04:03:43,926 INFO L276 IsEmpty]: Start isEmpty. Operand 27770 states and 40111 transitions. [2022-11-23 04:03:43,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2022-11-23 04:03:43,926 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 04:03:43,927 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 04:03:43,927 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-11-23 04:03:43,927 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 04:03:43,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 04:03:43,927 INFO L85 PathProgramCache]: Analyzing trace with hash 590869479, now seen corresponding path program 1 times [2022-11-23 04:03:43,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 04:03:43,928 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1828696443] [2022-11-23 04:03:43,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 04:03:43,928 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 04:03:43,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 04:03:44,072 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 04:03:44,072 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 04:03:44,072 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1828696443] [2022-11-23 04:03:44,073 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1828696443] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 04:03:44,073 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 04:03:44,073 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-23 04:03:44,073 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1551299623] [2022-11-23 04:03:44,073 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 04:03:44,074 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-23 04:03:44,074 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 04:03:44,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-23 04:03:44,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-23 04:03:44,074 INFO L87 Difference]: Start difference. First operand 27770 states and 40111 transitions. Second operand has 7 states, 7 states have (on average 16.571428571428573) internal successors, (116), 6 states have internal predecessors, (116), 0 states have call successors, (0), 0 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 04:04:44,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 04:04:44,794 INFO L93 Difference]: Finished difference Result 75981 states and 109385 transitions. [2022-11-23 04:04:44,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-23 04:04:44,794 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.571428571428573) internal successors, (116), 6 states have internal predecessors, (116), 0 states have call successors, (0), 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 116 [2022-11-23 04:04:44,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 04:04:44,856 INFO L225 Difference]: With dead ends: 75981 [2022-11-23 04:04:44,856 INFO L226 Difference]: Without dead ends: 48307 [2022-11-23 04:04:44,874 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2022-11-23 04:04:44,875 INFO L413 NwaCegarLoop]: 149 mSDtfsCounter, 1173 mSDsluCounter, 301 mSDsCounter, 0 mSdLazyCounter, 363 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1173 SdHoareTripleChecker+Valid, 450 SdHoareTripleChecker+Invalid, 378 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 363 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-23 04:04:44,875 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1173 Valid, 450 Invalid, 378 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 363 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-23 04:04:44,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48307 states. [2022-11-23 04:05:20,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48307 to 29651. [2022-11-23 04:05:20,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29651 states, 29650 states have (on average 1.4374030354131535) internal successors, (42619), 29650 states have internal predecessors, (42619), 0 states have call successors, (0), 0 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 04:05:20,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29651 states to 29651 states and 42619 transitions. [2022-11-23 04:05:20,292 INFO L78 Accepts]: Start accepts. Automaton has 29651 states and 42619 transitions. Word has length 116 [2022-11-23 04:05:20,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 04:05:20,292 INFO L495 AbstractCegarLoop]: Abstraction has 29651 states and 42619 transitions. [2022-11-23 04:05:20,292 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.571428571428573) internal successors, (116), 6 states have internal predecessors, (116), 0 states have call successors, (0), 0 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 04:05:20,292 INFO L276 IsEmpty]: Start isEmpty. Operand 29651 states and 42619 transitions. [2022-11-23 04:05:20,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2022-11-23 04:05:20,300 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 04:05:20,300 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 04:05:20,300 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-11-23 04:05:20,300 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 04:05:20,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 04:05:20,301 INFO L85 PathProgramCache]: Analyzing trace with hash -1143695338, now seen corresponding path program 1 times [2022-11-23 04:05:20,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 04:05:20,301 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1984783728] [2022-11-23 04:05:20,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 04:05:20,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 04:05:20,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 04:05:20,399 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-23 04:05:20,399 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 04:05:20,400 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1984783728] [2022-11-23 04:05:20,400 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1984783728] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 04:05:20,400 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 04:05:20,400 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 04:05:20,400 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1563443992] [2022-11-23 04:05:20,400 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 04:05:20,401 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 04:05:20,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 04:05:20,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 04:05:20,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 04:05:20,402 INFO L87 Difference]: Start difference. First operand 29651 states and 42619 transitions. Second operand has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 0 states have call successors, (0), 0 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 04:05:54,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 04:05:54,265 INFO L93 Difference]: Finished difference Result 57087 states and 81909 transitions. [2022-11-23 04:05:54,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 04:05:54,266 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 0 states have call successors, (0), 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 143 [2022-11-23 04:05:54,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 04:05:54,300 INFO L225 Difference]: With dead ends: 57087 [2022-11-23 04:05:54,300 INFO L226 Difference]: Without dead ends: 27538 [2022-11-23 04:05:54,313 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 04:05:54,314 INFO L413 NwaCegarLoop]: 231 mSDtfsCounter, 78 mSDsluCounter, 153 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 384 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-23 04:05:54,314 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [78 Valid, 384 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 04:05:54,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27538 states. [2022-11-23 04:06:27,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27538 to 26906. [2022-11-23 04:06:27,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26906 states, 26905 states have (on average 1.425720126370563) internal successors, (38359), 26905 states have internal predecessors, (38359), 0 states have call successors, (0), 0 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 04:06:27,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26906 states to 26906 states and 38359 transitions. [2022-11-23 04:06:27,576 INFO L78 Accepts]: Start accepts. Automaton has 26906 states and 38359 transitions. Word has length 143 [2022-11-23 04:06:27,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 04:06:27,576 INFO L495 AbstractCegarLoop]: Abstraction has 26906 states and 38359 transitions. [2022-11-23 04:06:27,576 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 0 states have call successors, (0), 0 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 04:06:27,576 INFO L276 IsEmpty]: Start isEmpty. Operand 26906 states and 38359 transitions. [2022-11-23 04:06:27,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2022-11-23 04:06:27,582 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 04:06:27,583 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 04:06:27,583 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2022-11-23 04:06:27,583 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 04:06:27,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 04:06:27,584 INFO L85 PathProgramCache]: Analyzing trace with hash -1248985563, now seen corresponding path program 1 times [2022-11-23 04:06:27,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 04:06:27,584 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [539581312] [2022-11-23 04:06:27,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 04:06:27,584 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 04:06:27,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 04:06:27,704 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-23 04:06:27,704 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 04:06:27,704 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [539581312] [2022-11-23 04:06:27,704 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [539581312] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 04:06:27,705 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 04:06:27,705 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 04:06:27,705 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [814764856] [2022-11-23 04:06:27,705 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 04:06:27,705 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 04:06:27,706 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 04:06:27,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 04:06:27,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 04:06:27,706 INFO L87 Difference]: Start difference. First operand 26906 states and 38359 transitions. Second operand has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 3 states have internal predecessors, (131), 0 states have call successors, (0), 0 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 04:06:58,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 04:06:58,788 INFO L93 Difference]: Finished difference Result 51618 states and 73417 transitions. [2022-11-23 04:06:58,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 04:06:58,789 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 3 states have internal predecessors, (131), 0 states have call successors, (0), 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 144 [2022-11-23 04:06:58,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 04:06:58,814 INFO L225 Difference]: With dead ends: 51618 [2022-11-23 04:06:58,814 INFO L226 Difference]: Without dead ends: 24808 [2022-11-23 04:06:58,827 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 04:06:58,828 INFO L413 NwaCegarLoop]: 227 mSDtfsCounter, 71 mSDsluCounter, 159 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 386 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-23 04:06:58,828 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 386 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 04:06:58,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24808 states. [2022-11-23 04:07:31,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24808 to 24206. [2022-11-23 04:07:31,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24206 states, 24205 states have (on average 1.4112373476554432) internal successors, (34159), 24205 states have internal predecessors, (34159), 0 states have call successors, (0), 0 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 04:07:31,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24206 states to 24206 states and 34159 transitions. [2022-11-23 04:07:31,271 INFO L78 Accepts]: Start accepts. Automaton has 24206 states and 34159 transitions. Word has length 144 [2022-11-23 04:07:31,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 04:07:31,272 INFO L495 AbstractCegarLoop]: Abstraction has 24206 states and 34159 transitions. [2022-11-23 04:07:31,272 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 3 states have internal predecessors, (131), 0 states have call successors, (0), 0 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 04:07:31,272 INFO L276 IsEmpty]: Start isEmpty. Operand 24206 states and 34159 transitions. [2022-11-23 04:07:31,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-11-23 04:07:31,277 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 04:07:31,277 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 04:07:31,277 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2022-11-23 04:07:31,277 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 04:07:31,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 04:07:31,278 INFO L85 PathProgramCache]: Analyzing trace with hash -753227601, now seen corresponding path program 1 times [2022-11-23 04:07:31,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 04:07:31,278 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [859029827] [2022-11-23 04:07:31,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 04:07:31,279 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 04:07:31,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 04:07:31,408 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-23 04:07:31,408 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 04:07:31,409 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [859029827] [2022-11-23 04:07:31,409 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [859029827] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 04:07:31,409 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 04:07:31,409 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 04:07:31,409 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2107288831] [2022-11-23 04:07:31,409 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 04:07:31,410 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 04:07:31,410 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 04:07:31,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 04:07:31,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 04:07:31,411 INFO L87 Difference]: Start difference. First operand 24206 states and 34159 transitions. Second operand has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 0 states have call successors, (0), 0 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 04:08:04,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 04:08:04,372 INFO L93 Difference]: Finished difference Result 46218 states and 65017 transitions. [2022-11-23 04:08:04,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 04:08:04,372 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 0 states have call successors, (0), 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 145 [2022-11-23 04:08:04,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 04:08:04,394 INFO L225 Difference]: With dead ends: 46218 [2022-11-23 04:08:04,394 INFO L226 Difference]: Without dead ends: 22108 [2022-11-23 04:08:04,403 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 04:08:04,404 INFO L413 NwaCegarLoop]: 221 mSDtfsCounter, 64 mSDsluCounter, 165 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 386 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-23 04:08:04,404 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 386 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 04:08:04,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22108 states. [2022-11-23 04:08:36,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22108 to 21506. [2022-11-23 04:08:36,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21506 states, 21505 states have (on average 1.3931178795628925) internal successors, (29959), 21505 states have internal predecessors, (29959), 0 states have call successors, (0), 0 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 04:08:36,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21506 states to 21506 states and 29959 transitions. [2022-11-23 04:08:36,596 INFO L78 Accepts]: Start accepts. Automaton has 21506 states and 29959 transitions. Word has length 145 [2022-11-23 04:08:36,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 04:08:36,597 INFO L495 AbstractCegarLoop]: Abstraction has 21506 states and 29959 transitions. [2022-11-23 04:08:36,597 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 0 states have call successors, (0), 0 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 04:08:36,597 INFO L276 IsEmpty]: Start isEmpty. Operand 21506 states and 29959 transitions. [2022-11-23 04:08:36,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-11-23 04:08:36,601 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 04:08:36,601 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 04:08:36,601 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2022-11-23 04:08:36,601 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 04:08:36,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 04:08:36,602 INFO L85 PathProgramCache]: Analyzing trace with hash -1187620974, now seen corresponding path program 1 times [2022-11-23 04:08:36,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 04:08:36,602 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [644354426] [2022-11-23 04:08:36,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 04:08:36,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 04:08:36,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 04:08:36,734 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-23 04:08:36,734 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 04:08:36,734 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [644354426] [2022-11-23 04:08:36,734 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [644354426] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 04:08:36,734 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 04:08:36,734 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 04:08:36,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [109722873] [2022-11-23 04:08:36,735 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 04:08:36,735 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 04:08:36,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 04:08:36,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 04:08:36,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 04:08:36,736 INFO L87 Difference]: Start difference. First operand 21506 states and 29959 transitions. Second operand has 3 states, 3 states have (on average 47.0) internal successors, (141), 3 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 04:09:41,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 04:09:41,247 INFO L93 Difference]: Finished difference Result 62126 states and 86073 transitions. [2022-11-23 04:09:41,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 04:09:41,248 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.0) internal successors, (141), 3 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 146 [2022-11-23 04:09:41,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 04:09:41,308 INFO L225 Difference]: With dead ends: 62126 [2022-11-23 04:09:41,308 INFO L226 Difference]: Without dead ends: 40716 [2022-11-23 04:09:41,323 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 04:09:41,323 INFO L413 NwaCegarLoop]: 217 mSDtfsCounter, 56 mSDsluCounter, 172 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 389 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-23 04:09:41,324 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 389 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 04:09:41,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40716 states. [2022-11-23 04:10:39,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40716 to 37914. [2022-11-23 04:10:39,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37914 states, 37913 states have (on average 1.3772320839817478) internal successors, (52215), 37913 states have internal predecessors, (52215), 0 states have call successors, (0), 0 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 04:10:39,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37914 states to 37914 states and 52215 transitions. [2022-11-23 04:10:39,165 INFO L78 Accepts]: Start accepts. Automaton has 37914 states and 52215 transitions. Word has length 146 [2022-11-23 04:10:39,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 04:10:39,165 INFO L495 AbstractCegarLoop]: Abstraction has 37914 states and 52215 transitions. [2022-11-23 04:10:39,165 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.0) internal successors, (141), 3 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 04:10:39,165 INFO L276 IsEmpty]: Start isEmpty. Operand 37914 states and 52215 transitions. [2022-11-23 04:10:39,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2022-11-23 04:10:39,168 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 04:10:39,168 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 04:10:39,168 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2022-11-23 04:10:39,168 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 04:10:39,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 04:10:39,169 INFO L85 PathProgramCache]: Analyzing trace with hash 134527664, now seen corresponding path program 1 times [2022-11-23 04:10:39,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 04:10:39,169 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [955533740] [2022-11-23 04:10:39,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 04:10:39,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 04:10:39,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 04:10:39,928 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 16 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 04:10:39,928 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 04:10:39,929 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [955533740] [2022-11-23 04:10:39,929 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [955533740] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 04:10:39,929 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [653524230] [2022-11-23 04:10:39,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 04:10:39,929 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 04:10:39,929 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d1b85f1-359c-4c3a-8f22-30355d94c7d8/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 04:10:39,933 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d1b85f1-359c-4c3a-8f22-30355d94c7d8/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 04:10:39,949 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d1b85f1-359c-4c3a-8f22-30355d94c7d8/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-23 04:10:40,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 04:10:40,141 INFO L263 TraceCheckSpWp]: Trace formula consists of 636 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-23 04:10:40,149 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 04:10:52,309 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 18 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 04:10:52,310 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 04:10:55,683 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 18 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 04:10:55,683 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [653524230] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 04:10:55,683 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 04:10:55,684 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 10] total 28 [2022-11-23 04:10:55,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [221253750] [2022-11-23 04:10:55,684 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 04:10:55,684 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-11-23 04:10:55,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 04:10:55,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-11-23 04:10:55,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=719, Unknown=4, NotChecked=0, Total=812 [2022-11-23 04:10:55,686 INFO L87 Difference]: Start difference. First operand 37914 states and 52215 transitions. Second operand has 29 states, 29 states have (on average 13.793103448275861) internal successors, (400), 28 states have internal predecessors, (400), 0 states have call successors, (0), 0 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 04:11:04,356 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-11-23 04:11:07,971 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-11-23 04:11:10,247 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-11-23 04:11:12,251 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-11-23 04:11:14,267 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-11-23 04:11:16,273 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-11-23 04:11:18,797 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-11-23 04:11:20,909 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-11-23 04:11:22,933 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-11-23 04:11:25,057 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.97s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-11-23 04:11:27,091 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-11-23 04:11:29,428 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-11-23 04:11:33,947 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-11-23 04:11:35,027 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.03s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-11-23 04:11:42,334 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-11-23 04:11:51,450 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-11-23 04:11:53,476 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-11-23 04:11:59,838 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-11-23 04:12:01,873 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-11-23 04:12:03,923 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-11-23 04:12:13,172 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-11-23 04:12:15,195 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-11-23 04:12:20,632 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-11-23 04:12:22,681 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-11-23 04:12:24,709 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0]