./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_470e2a61-58ee-4a35-9213-3302613150b6/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_470e2a61-58ee-4a35-9213-3302613150b6/bin/uautomizer-uyxdKDjOR8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_470e2a61-58ee-4a35-9213-3302613150b6/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_470e2a61-58ee-4a35-9213-3302613150b6/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_470e2a61-58ee-4a35-9213-3302613150b6/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_470e2a61-58ee-4a35-9213-3302613150b6/bin/uautomizer-uyxdKDjOR8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash a6374c4e2c0297c3123cfdf0954bdc9362f3fda9d9942785abd7924d756030a0 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-2329fc7 [2022-12-13 21:49:39,903 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 21:49:39,905 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 21:49:39,930 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 21:49:39,930 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 21:49:39,931 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 21:49:39,932 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 21:49:39,933 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 21:49:39,935 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 21:49:39,936 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 21:49:39,944 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 21:49:39,946 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 21:49:39,946 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 21:49:39,947 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 21:49:39,948 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 21:49:39,949 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 21:49:39,949 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 21:49:39,950 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 21:49:39,952 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 21:49:39,953 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 21:49:39,955 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 21:49:39,956 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 21:49:39,957 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 21:49:39,957 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 21:49:39,961 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 21:49:39,961 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 21:49:39,961 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 21:49:39,962 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 21:49:39,962 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 21:49:39,963 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 21:49:39,963 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 21:49:39,964 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 21:49:39,965 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 21:49:39,965 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 21:49:39,966 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 21:49:39,966 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 21:49:39,967 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 21:49:39,967 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 21:49:39,967 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 21:49:39,968 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 21:49:39,969 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 21:49:39,970 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_470e2a61-58ee-4a35-9213-3302613150b6/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-12-13 21:49:39,990 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 21:49:39,990 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 21:49:39,990 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 21:49:39,990 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 21:49:39,991 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 21:49:39,991 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 21:49:39,992 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 21:49:39,992 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 21:49:39,992 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 21:49:39,992 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 21:49:39,993 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 21:49:39,993 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 21:49:39,993 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 21:49:39,993 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 21:49:39,993 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 21:49:39,993 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 21:49:39,994 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 21:49:39,994 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 21:49:39,994 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 21:49:39,994 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 21:49:39,994 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 21:49:39,994 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 21:49:39,995 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 21:49:39,995 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 21:49:39,995 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 21:49:39,995 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 21:49:39,995 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 21:49:39,995 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 21:49:39,996 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 21:49:39,996 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 21:49:39,996 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 21:49:39,996 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 21:49:39,996 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 21:49:39,996 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 21:49:39,996 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 21:49:39,997 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_470e2a61-58ee-4a35-9213-3302613150b6/bin/uautomizer-uyxdKDjOR8/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_470e2a61-58ee-4a35-9213-3302613150b6/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a6374c4e2c0297c3123cfdf0954bdc9362f3fda9d9942785abd7924d756030a0 [2022-12-13 21:49:40,183 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 21:49:40,201 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 21:49:40,203 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 21:49:40,204 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 21:49:40,205 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 21:49:40,206 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_470e2a61-58ee-4a35-9213-3302613150b6/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2022-12-13 21:49:42,809 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 21:49:42,975 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 21:49:42,975 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_470e2a61-58ee-4a35-9213-3302613150b6/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2022-12-13 21:49:42,984 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_470e2a61-58ee-4a35-9213-3302613150b6/bin/uautomizer-uyxdKDjOR8/data/a3ad21522/49935234e5944d96a410d66df4431e43/FLAG7fb13b3b9 [2022-12-13 21:49:42,995 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_470e2a61-58ee-4a35-9213-3302613150b6/bin/uautomizer-uyxdKDjOR8/data/a3ad21522/49935234e5944d96a410d66df4431e43 [2022-12-13 21:49:42,997 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 21:49:42,998 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 21:49:43,000 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 21:49:43,000 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 21:49:43,003 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 21:49:43,004 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 09:49:42" (1/1) ... [2022-12-13 21:49:43,005 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1fcdd37c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:49:43, skipping insertion in model container [2022-12-13 21:49:43,005 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 09:49:42" (1/1) ... [2022-12-13 21:49:43,011 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 21:49:43,049 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 21:49:43,259 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_470e2a61-58ee-4a35-9213-3302613150b6/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c[9092,9105] [2022-12-13 21:49:43,305 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 21:49:43,318 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 21:49:43,363 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_470e2a61-58ee-4a35-9213-3302613150b6/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c[9092,9105] [2022-12-13 21:49:43,385 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 21:49:43,397 INFO L208 MainTranslator]: Completed translation [2022-12-13 21:49:43,397 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:49:43 WrapperNode [2022-12-13 21:49:43,397 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 21:49:43,398 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 21:49:43,398 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 21:49:43,398 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 21:49:43,404 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:49:43" (1/1) ... [2022-12-13 21:49:43,414 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:49:43" (1/1) ... [2022-12-13 21:49:43,438 INFO L138 Inliner]: procedures = 26, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 729 [2022-12-13 21:49:43,438 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 21:49:43,439 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 21:49:43,439 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 21:49:43,439 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 21:49:43,445 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:49:43" (1/1) ... [2022-12-13 21:49:43,445 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:49:43" (1/1) ... [2022-12-13 21:49:43,448 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:49:43" (1/1) ... [2022-12-13 21:49:43,448 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:49:43" (1/1) ... [2022-12-13 21:49:43,453 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:49:43" (1/1) ... [2022-12-13 21:49:43,456 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:49:43" (1/1) ... [2022-12-13 21:49:43,458 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:49:43" (1/1) ... [2022-12-13 21:49:43,459 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:49:43" (1/1) ... [2022-12-13 21:49:43,462 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 21:49:43,462 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 21:49:43,462 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 21:49:43,463 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 21:49:43,463 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:49:43" (1/1) ... [2022-12-13 21:49:43,468 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 21:49:43,476 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_470e2a61-58ee-4a35-9213-3302613150b6/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 21:49:43,485 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_470e2a61-58ee-4a35-9213-3302613150b6/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 21:49:43,487 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_470e2a61-58ee-4a35-9213-3302613150b6/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 21:49:43,517 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 21:49:43,518 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 21:49:43,518 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 21:49:43,518 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 21:49:43,617 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 21:49:43,618 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 21:49:44,093 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 21:49:44,102 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 21:49:44,102 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-12-13 21:49:44,104 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 09:49:44 BoogieIcfgContainer [2022-12-13 21:49:44,104 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 21:49:44,106 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 21:49:44,106 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 21:49:44,110 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 21:49:44,110 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 09:49:42" (1/3) ... [2022-12-13 21:49:44,110 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c4da3d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 09:49:44, skipping insertion in model container [2022-12-13 21:49:44,111 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:49:43" (2/3) ... [2022-12-13 21:49:44,111 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c4da3d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 09:49:44, skipping insertion in model container [2022-12-13 21:49:44,111 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 09:49:44" (3/3) ... [2022-12-13 21:49:44,113 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr.6.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2022-12-13 21:49:44,131 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 21:49:44,132 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-13 21:49:44,172 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 21:49:44,176 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;@15fc1615, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 21:49:44,177 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-12-13 21:49:44,181 INFO L276 IsEmpty]: Start isEmpty. Operand has 178 states, 175 states have (on average 1.76) internal successors, (308), 177 states have internal predecessors, (308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:49:44,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-12-13 21:49:44,189 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 21:49:44,190 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:49:44,190 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 21:49:44,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:49:44,196 INFO L85 PathProgramCache]: Analyzing trace with hash -822713823, now seen corresponding path program 1 times [2022-12-13 21:49:44,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:49:44,205 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [685951835] [2022-12-13 21:49:44,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:49:44,206 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:49:44,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:49:44,759 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:49:44,759 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:49:44,760 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [685951835] [2022-12-13 21:49:44,760 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [685951835] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:49:44,760 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:49:44,761 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-12-13 21:49:44,762 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [786373658] [2022-12-13 21:49:44,763 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:49:44,767 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-13 21:49:44,767 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:49:44,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-13 21:49:44,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-12-13 21:49:44,798 INFO L87 Difference]: Start difference. First operand has 178 states, 175 states have (on average 1.76) internal successors, (308), 177 states have internal predecessors, (308), 0 states have call successors, (0), 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 8 states, 8 states have (on average 11.25) internal successors, (90), 8 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:49:45,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 21:49:45,327 INFO L93 Difference]: Finished difference Result 1144 states and 1831 transitions. [2022-12-13 21:49:45,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-12-13 21:49:45,329 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.25) internal successors, (90), 8 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 90 [2022-12-13 21:49:45,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 21:49:45,345 INFO L225 Difference]: With dead ends: 1144 [2022-12-13 21:49:45,345 INFO L226 Difference]: Without dead ends: 1024 [2022-12-13 21:49:45,347 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=91, Invalid=181, Unknown=0, NotChecked=0, Total=272 [2022-12-13 21:49:45,351 INFO L413 NwaCegarLoop]: 615 mSDtfsCounter, 2265 mSDsluCounter, 2485 mSDsCounter, 0 mSdLazyCounter, 255 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2265 SdHoareTripleChecker+Valid, 3100 SdHoareTripleChecker+Invalid, 267 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 255 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-13 21:49:45,352 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2265 Valid, 3100 Invalid, 267 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 255 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-13 21:49:45,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1024 states. [2022-12-13 21:49:45,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1024 to 267. [2022-12-13 21:49:45,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 267 states, 266 states have (on average 1.4511278195488722) internal successors, (386), 266 states have internal predecessors, (386), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:49:45,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267 states to 267 states and 386 transitions. [2022-12-13 21:49:45,419 INFO L78 Accepts]: Start accepts. Automaton has 267 states and 386 transitions. Word has length 90 [2022-12-13 21:49:45,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 21:49:45,419 INFO L495 AbstractCegarLoop]: Abstraction has 267 states and 386 transitions. [2022-12-13 21:49:45,420 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.25) internal successors, (90), 8 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:49:45,420 INFO L276 IsEmpty]: Start isEmpty. Operand 267 states and 386 transitions. [2022-12-13 21:49:45,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-12-13 21:49:45,422 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 21:49:45,422 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:49:45,423 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 21:49:45,423 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 21:49:45,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:49:45,424 INFO L85 PathProgramCache]: Analyzing trace with hash 1483332975, now seen corresponding path program 1 times [2022-12-13 21:49:45,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:49:45,424 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1399117047] [2022-12-13 21:49:45,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:49:45,425 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:49:45,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:49:45,680 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:49:45,681 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:49:45,681 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1399117047] [2022-12-13 21:49:45,681 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1399117047] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:49:45,681 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:49:45,681 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-12-13 21:49:45,681 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [524493937] [2022-12-13 21:49:45,682 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:49:45,683 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-13 21:49:45,683 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:49:45,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-13 21:49:45,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-12-13 21:49:45,684 INFO L87 Difference]: Start difference. First operand 267 states and 386 transitions. Second operand has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:49:45,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 21:49:45,969 INFO L93 Difference]: Finished difference Result 1220 states and 1888 transitions. [2022-12-13 21:49:45,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-13 21:49:45,970 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 92 [2022-12-13 21:49:45,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 21:49:45,974 INFO L225 Difference]: With dead ends: 1220 [2022-12-13 21:49:45,975 INFO L226 Difference]: Without dead ends: 1082 [2022-12-13 21:49:45,976 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2022-12-13 21:49:45,977 INFO L413 NwaCegarLoop]: 574 mSDtfsCounter, 1567 mSDsluCounter, 1062 mSDsCounter, 0 mSdLazyCounter, 141 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1567 SdHoareTripleChecker+Valid, 1636 SdHoareTripleChecker+Invalid, 147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 21:49:45,978 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1567 Valid, 1636 Invalid, 147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 141 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 21:49:45,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1082 states. [2022-12-13 21:49:46,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1082 to 335. [2022-12-13 21:49:46,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 335 states, 334 states have (on average 1.4790419161676647) internal successors, (494), 334 states have internal predecessors, (494), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:49:46,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 335 states to 335 states and 494 transitions. [2022-12-13 21:49:46,017 INFO L78 Accepts]: Start accepts. Automaton has 335 states and 494 transitions. Word has length 92 [2022-12-13 21:49:46,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 21:49:46,017 INFO L495 AbstractCegarLoop]: Abstraction has 335 states and 494 transitions. [2022-12-13 21:49:46,017 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:49:46,018 INFO L276 IsEmpty]: Start isEmpty. Operand 335 states and 494 transitions. [2022-12-13 21:49:46,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-12-13 21:49:46,018 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 21:49:46,019 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:49:46,019 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-13 21:49:46,019 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 21:49:46,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:49:46,019 INFO L85 PathProgramCache]: Analyzing trace with hash -1617802447, now seen corresponding path program 1 times [2022-12-13 21:49:46,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:49:46,020 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [476532830] [2022-12-13 21:49:46,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:49:46,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:49:46,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:49:46,169 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:49:46,169 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:49:46,169 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [476532830] [2022-12-13 21:49:46,169 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [476532830] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:49:46,169 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:49:46,170 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-12-13 21:49:46,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1418620969] [2022-12-13 21:49:46,170 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:49:46,170 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-13 21:49:46,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:49:46,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-13 21:49:46,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-12-13 21:49:46,172 INFO L87 Difference]: Start difference. First operand 335 states and 494 transitions. Second operand has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:49:46,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 21:49:46,461 INFO L93 Difference]: Finished difference Result 1304 states and 2021 transitions. [2022-12-13 21:49:46,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-13 21:49:46,462 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 92 [2022-12-13 21:49:46,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 21:49:46,466 INFO L225 Difference]: With dead ends: 1304 [2022-12-13 21:49:46,466 INFO L226 Difference]: Without dead ends: 1166 [2022-12-13 21:49:46,467 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2022-12-13 21:49:46,470 INFO L413 NwaCegarLoop]: 448 mSDtfsCounter, 1869 mSDsluCounter, 1132 mSDsCounter, 0 mSdLazyCounter, 122 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1869 SdHoareTripleChecker+Valid, 1580 SdHoareTripleChecker+Invalid, 128 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 21:49:46,470 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1869 Valid, 1580 Invalid, 128 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 122 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 21:49:46,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1166 states. [2022-12-13 21:49:46,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1166 to 498. [2022-12-13 21:49:46,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 498 states, 497 states have (on average 1.5130784708249496) internal successors, (752), 497 states have internal predecessors, (752), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:49:46,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 498 states to 498 states and 752 transitions. [2022-12-13 21:49:46,557 INFO L78 Accepts]: Start accepts. Automaton has 498 states and 752 transitions. Word has length 92 [2022-12-13 21:49:46,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 21:49:46,558 INFO L495 AbstractCegarLoop]: Abstraction has 498 states and 752 transitions. [2022-12-13 21:49:46,558 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:49:46,558 INFO L276 IsEmpty]: Start isEmpty. Operand 498 states and 752 transitions. [2022-12-13 21:49:46,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-12-13 21:49:46,560 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 21:49:46,561 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:49:46,561 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-13 21:49:46,561 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 21:49:46,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:49:46,562 INFO L85 PathProgramCache]: Analyzing trace with hash 1906062023, now seen corresponding path program 1 times [2022-12-13 21:49:46,562 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:49:46,562 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1678774844] [2022-12-13 21:49:46,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:49:46,562 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:49:46,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:49:46,762 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:49:46,763 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:49:46,763 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1678774844] [2022-12-13 21:49:46,763 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1678774844] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:49:46,763 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:49:46,763 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-12-13 21:49:46,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [310283223] [2022-12-13 21:49:46,764 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:49:46,764 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-13 21:49:46,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:49:46,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-13 21:49:46,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-12-13 21:49:46,765 INFO L87 Difference]: Start difference. First operand 498 states and 752 transitions. Second operand has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:49:47,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 21:49:47,013 INFO L93 Difference]: Finished difference Result 1373 states and 2130 transitions. [2022-12-13 21:49:47,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-13 21:49:47,014 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 92 [2022-12-13 21:49:47,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 21:49:47,017 INFO L225 Difference]: With dead ends: 1373 [2022-12-13 21:49:47,018 INFO L226 Difference]: Without dead ends: 1235 [2022-12-13 21:49:47,018 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2022-12-13 21:49:47,019 INFO L413 NwaCegarLoop]: 338 mSDtfsCounter, 1985 mSDsluCounter, 1228 mSDsCounter, 0 mSdLazyCounter, 109 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1985 SdHoareTripleChecker+Valid, 1566 SdHoareTripleChecker+Invalid, 115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 21:49:47,020 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1985 Valid, 1566 Invalid, 115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 109 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 21:49:47,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1235 states. [2022-12-13 21:49:47,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1235 to 567. [2022-12-13 21:49:47,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 567 states, 566 states have (on average 1.5212014134275618) internal successors, (861), 566 states have internal predecessors, (861), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:49:47,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 567 states to 567 states and 861 transitions. [2022-12-13 21:49:47,079 INFO L78 Accepts]: Start accepts. Automaton has 567 states and 861 transitions. Word has length 92 [2022-12-13 21:49:47,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 21:49:47,079 INFO L495 AbstractCegarLoop]: Abstraction has 567 states and 861 transitions. [2022-12-13 21:49:47,079 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:49:47,079 INFO L276 IsEmpty]: Start isEmpty. Operand 567 states and 861 transitions. [2022-12-13 21:49:47,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-12-13 21:49:47,080 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 21:49:47,080 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:49:47,080 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-13 21:49:47,080 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 21:49:47,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:49:47,081 INFO L85 PathProgramCache]: Analyzing trace with hash 614894983, now seen corresponding path program 1 times [2022-12-13 21:49:47,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:49:47,081 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1554550543] [2022-12-13 21:49:47,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:49:47,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:49:47,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:49:47,156 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:49:47,156 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:49:47,156 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1554550543] [2022-12-13 21:49:47,157 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1554550543] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:49:47,157 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:49:47,157 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 21:49:47,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [778725468] [2022-12-13 21:49:47,157 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:49:47,157 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 21:49:47,158 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:49:47,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 21:49:47,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 21:49:47,159 INFO L87 Difference]: Start difference. First operand 567 states and 861 transitions. Second operand has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:49:47,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 21:49:47,246 INFO L93 Difference]: Finished difference Result 982 states and 1516 transitions. [2022-12-13 21:49:47,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 21:49:47,247 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 92 [2022-12-13 21:49:47,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 21:49:47,251 INFO L225 Difference]: With dead ends: 982 [2022-12-13 21:49:47,251 INFO L226 Difference]: Without dead ends: 566 [2022-12-13 21:49:47,252 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 21:49:47,253 INFO L413 NwaCegarLoop]: 237 mSDtfsCounter, 0 mSDsluCounter, 225 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 462 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 21:49:47,253 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 462 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 21:49:47,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 566 states. [2022-12-13 21:49:47,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 566 to 566. [2022-12-13 21:49:47,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 566 states, 565 states have (on average 1.511504424778761) internal successors, (854), 565 states have internal predecessors, (854), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:49:47,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 566 states to 566 states and 854 transitions. [2022-12-13 21:49:47,313 INFO L78 Accepts]: Start accepts. Automaton has 566 states and 854 transitions. Word has length 92 [2022-12-13 21:49:47,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 21:49:47,313 INFO L495 AbstractCegarLoop]: Abstraction has 566 states and 854 transitions. [2022-12-13 21:49:47,313 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:49:47,313 INFO L276 IsEmpty]: Start isEmpty. Operand 566 states and 854 transitions. [2022-12-13 21:49:47,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-12-13 21:49:47,314 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 21:49:47,314 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, 1, 1, 1, 1] [2022-12-13 21:49:47,314 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-13 21:49:47,314 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 21:49:47,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:49:47,315 INFO L85 PathProgramCache]: Analyzing trace with hash 858972646, now seen corresponding path program 1 times [2022-12-13 21:49:47,315 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:49:47,315 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1903230597] [2022-12-13 21:49:47,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:49:47,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:49:47,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:49:47,367 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:49:47,367 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:49:47,368 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1903230597] [2022-12-13 21:49:47,368 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1903230597] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:49:47,368 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:49:47,368 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 21:49:47,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1592371630] [2022-12-13 21:49:47,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:49:47,369 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 21:49:47,369 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:49:47,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 21:49:47,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 21:49:47,370 INFO L87 Difference]: Start difference. First operand 566 states and 854 transitions. Second operand has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:49:47,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 21:49:47,495 INFO L93 Difference]: Finished difference Result 1178 states and 1816 transitions. [2022-12-13 21:49:47,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 21:49:47,496 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 92 [2022-12-13 21:49:47,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 21:49:47,498 INFO L225 Difference]: With dead ends: 1178 [2022-12-13 21:49:47,498 INFO L226 Difference]: Without dead ends: 769 [2022-12-13 21:49:47,498 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 21:49:47,499 INFO L413 NwaCegarLoop]: 336 mSDtfsCounter, 122 mSDsluCounter, 200 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 536 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 21:49:47,499 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [122 Valid, 536 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 21:49:47,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 769 states. [2022-12-13 21:49:47,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 769 to 767. [2022-12-13 21:49:47,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 767 states, 766 states have (on average 1.5234986945169713) internal successors, (1167), 766 states have internal predecessors, (1167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:49:47,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 767 states to 767 states and 1167 transitions. [2022-12-13 21:49:47,594 INFO L78 Accepts]: Start accepts. Automaton has 767 states and 1167 transitions. Word has length 92 [2022-12-13 21:49:47,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 21:49:47,595 INFO L495 AbstractCegarLoop]: Abstraction has 767 states and 1167 transitions. [2022-12-13 21:49:47,595 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:49:47,595 INFO L276 IsEmpty]: Start isEmpty. Operand 767 states and 1167 transitions. [2022-12-13 21:49:47,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-12-13 21:49:47,595 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 21:49:47,595 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:49:47,596 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-13 21:49:47,596 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 21:49:47,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:49:47,596 INFO L85 PathProgramCache]: Analyzing trace with hash -1799043301, now seen corresponding path program 1 times [2022-12-13 21:49:47,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:49:47,596 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1239537740] [2022-12-13 21:49:47,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:49:47,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:49:47,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:49:47,786 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:49:47,786 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:49:47,786 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1239537740] [2022-12-13 21:49:47,787 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1239537740] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:49:47,787 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:49:47,787 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-12-13 21:49:47,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1625975723] [2022-12-13 21:49:47,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:49:47,788 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-13 21:49:47,788 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:49:47,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-13 21:49:47,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-12-13 21:49:47,789 INFO L87 Difference]: Start difference. First operand 767 states and 1167 transitions. Second operand has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:49:48,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 21:49:48,151 INFO L93 Difference]: Finished difference Result 1641 states and 2529 transitions. [2022-12-13 21:49:48,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-13 21:49:48,151 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 92 [2022-12-13 21:49:48,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 21:49:48,154 INFO L225 Difference]: With dead ends: 1641 [2022-12-13 21:49:48,154 INFO L226 Difference]: Without dead ends: 1504 [2022-12-13 21:49:48,155 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2022-12-13 21:49:48,156 INFO L413 NwaCegarLoop]: 454 mSDtfsCounter, 1514 mSDsluCounter, 1536 mSDsCounter, 0 mSdLazyCounter, 172 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1514 SdHoareTripleChecker+Valid, 1990 SdHoareTripleChecker+Invalid, 178 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 172 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 21:49:48,156 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1514 Valid, 1990 Invalid, 178 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 172 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 21:49:48,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1504 states. [2022-12-13 21:49:48,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1504 to 913. [2022-12-13 21:49:48,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 913 states, 912 states have (on average 1.530701754385965) internal successors, (1396), 912 states have internal predecessors, (1396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:49:48,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 913 states to 913 states and 1396 transitions. [2022-12-13 21:49:48,274 INFO L78 Accepts]: Start accepts. Automaton has 913 states and 1396 transitions. Word has length 92 [2022-12-13 21:49:48,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 21:49:48,274 INFO L495 AbstractCegarLoop]: Abstraction has 913 states and 1396 transitions. [2022-12-13 21:49:48,274 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:49:48,274 INFO L276 IsEmpty]: Start isEmpty. Operand 913 states and 1396 transitions. [2022-12-13 21:49:48,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-12-13 21:49:48,275 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 21:49:48,275 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:49:48,275 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-13 21:49:48,275 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 21:49:48,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:49:48,275 INFO L85 PathProgramCache]: Analyzing trace with hash 1982868957, now seen corresponding path program 1 times [2022-12-13 21:49:48,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:49:48,275 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2015180839] [2022-12-13 21:49:48,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:49:48,276 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:49:48,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:49:48,411 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:49:48,411 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:49:48,411 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2015180839] [2022-12-13 21:49:48,411 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2015180839] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:49:48,411 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:49:48,411 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-12-13 21:49:48,411 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [977661117] [2022-12-13 21:49:48,412 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:49:48,412 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-13 21:49:48,412 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:49:48,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-13 21:49:48,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-12-13 21:49:48,413 INFO L87 Difference]: Start difference. First operand 913 states and 1396 transitions. Second operand has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:49:48,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 21:49:48,804 INFO L93 Difference]: Finished difference Result 1787 states and 2758 transitions. [2022-12-13 21:49:48,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-13 21:49:48,804 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 92 [2022-12-13 21:49:48,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 21:49:48,810 INFO L225 Difference]: With dead ends: 1787 [2022-12-13 21:49:48,810 INFO L226 Difference]: Without dead ends: 1650 [2022-12-13 21:49:48,811 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2022-12-13 21:49:48,811 INFO L413 NwaCegarLoop]: 463 mSDtfsCounter, 1709 mSDsluCounter, 1909 mSDsCounter, 0 mSdLazyCounter, 181 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1709 SdHoareTripleChecker+Valid, 2372 SdHoareTripleChecker+Invalid, 187 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 181 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 21:49:48,812 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1709 Valid, 2372 Invalid, 187 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 181 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 21:49:48,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1650 states. [2022-12-13 21:49:48,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1650 to 1064. [2022-12-13 21:49:48,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1064 states, 1063 states have (on average 1.5362182502351835) internal successors, (1633), 1063 states have internal predecessors, (1633), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:49:48,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1064 states to 1064 states and 1633 transitions. [2022-12-13 21:49:48,996 INFO L78 Accepts]: Start accepts. Automaton has 1064 states and 1633 transitions. Word has length 92 [2022-12-13 21:49:48,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 21:49:48,996 INFO L495 AbstractCegarLoop]: Abstraction has 1064 states and 1633 transitions. [2022-12-13 21:49:48,996 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:49:48,997 INFO L276 IsEmpty]: Start isEmpty. Operand 1064 states and 1633 transitions. [2022-12-13 21:49:48,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-12-13 21:49:48,998 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 21:49:48,998 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:49:48,998 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-13 21:49:48,998 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 21:49:48,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:49:48,999 INFO L85 PathProgramCache]: Analyzing trace with hash -820597111, now seen corresponding path program 1 times [2022-12-13 21:49:48,999 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:49:48,999 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [513956142] [2022-12-13 21:49:48,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:49:48,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:49:49,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:49:49,171 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:49:49,171 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:49:49,171 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [513956142] [2022-12-13 21:49:49,171 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [513956142] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:49:49,171 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:49:49,171 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-12-13 21:49:49,171 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1202354527] [2022-12-13 21:49:49,171 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:49:49,172 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-13 21:49:49,172 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:49:49,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-13 21:49:49,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-12-13 21:49:49,173 INFO L87 Difference]: Start difference. First operand 1064 states and 1633 transitions. Second operand has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:49:49,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 21:49:49,591 INFO L93 Difference]: Finished difference Result 1943 states and 3003 transitions. [2022-12-13 21:49:49,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-13 21:49:49,592 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 92 [2022-12-13 21:49:49,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 21:49:49,603 INFO L225 Difference]: With dead ends: 1943 [2022-12-13 21:49:49,603 INFO L226 Difference]: Without dead ends: 1806 [2022-12-13 21:49:49,604 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2022-12-13 21:49:49,605 INFO L413 NwaCegarLoop]: 378 mSDtfsCounter, 1955 mSDsluCounter, 1519 mSDsCounter, 0 mSdLazyCounter, 132 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1955 SdHoareTripleChecker+Valid, 1897 SdHoareTripleChecker+Invalid, 138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 132 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 21:49:49,605 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1955 Valid, 1897 Invalid, 138 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 132 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 21:49:49,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1806 states. [2022-12-13 21:49:49,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1806 to 1220. [2022-12-13 21:49:49,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1220 states, 1219 states have (on average 1.5406070549630846) internal successors, (1878), 1219 states have internal predecessors, (1878), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:49:49,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1220 states to 1220 states and 1878 transitions. [2022-12-13 21:49:49,804 INFO L78 Accepts]: Start accepts. Automaton has 1220 states and 1878 transitions. Word has length 92 [2022-12-13 21:49:49,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 21:49:49,805 INFO L495 AbstractCegarLoop]: Abstraction has 1220 states and 1878 transitions. [2022-12-13 21:49:49,805 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:49:49,805 INFO L276 IsEmpty]: Start isEmpty. Operand 1220 states and 1878 transitions. [2022-12-13 21:49:49,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-12-13 21:49:49,806 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 21:49:49,806 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:49:49,806 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-12-13 21:49:49,807 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 21:49:49,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:49:49,807 INFO L85 PathProgramCache]: Analyzing trace with hash 856439023, now seen corresponding path program 1 times [2022-12-13 21:49:49,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:49:49,807 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [149126644] [2022-12-13 21:49:49,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:49:49,808 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:49:49,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:49:49,893 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:49:49,894 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:49:49,894 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [149126644] [2022-12-13 21:49:49,894 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [149126644] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:49:49,894 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:49:49,894 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 21:49:49,894 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [39807516] [2022-12-13 21:49:49,894 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:49:49,895 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 21:49:49,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:49:49,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 21:49:49,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-13 21:49:49,895 INFO L87 Difference]: Start difference. First operand 1220 states and 1878 transitions. Second operand has 5 states, 5 states have (on average 18.6) internal successors, (93), 4 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:49:50,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 21:49:50,210 INFO L93 Difference]: Finished difference Result 2390 states and 3704 transitions. [2022-12-13 21:49:50,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 21:49:50,210 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.6) internal successors, (93), 4 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 93 [2022-12-13 21:49:50,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 21:49:50,212 INFO L225 Difference]: With dead ends: 2390 [2022-12-13 21:49:50,213 INFO L226 Difference]: Without dead ends: 1220 [2022-12-13 21:49:50,213 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 [2022-12-13 21:49:50,214 INFO L413 NwaCegarLoop]: 124 mSDtfsCounter, 637 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 637 SdHoareTripleChecker+Valid, 136 SdHoareTripleChecker+Invalid, 117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 21:49:50,214 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [637 Valid, 136 Invalid, 117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 21:49:50,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1220 states. [2022-12-13 21:49:50,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1220 to 1220. [2022-12-13 21:49:50,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1220 states, 1219 states have (on average 1.5274815422477441) internal successors, (1862), 1219 states have internal predecessors, (1862), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:49:50,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1220 states to 1220 states and 1862 transitions. [2022-12-13 21:49:50,360 INFO L78 Accepts]: Start accepts. Automaton has 1220 states and 1862 transitions. Word has length 93 [2022-12-13 21:49:50,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 21:49:50,360 INFO L495 AbstractCegarLoop]: Abstraction has 1220 states and 1862 transitions. [2022-12-13 21:49:50,360 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.6) internal successors, (93), 4 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:49:50,360 INFO L276 IsEmpty]: Start isEmpty. Operand 1220 states and 1862 transitions. [2022-12-13 21:49:50,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2022-12-13 21:49:50,361 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 21:49:50,361 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:49:50,361 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-12-13 21:49:50,361 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 21:49:50,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:49:50,362 INFO L85 PathProgramCache]: Analyzing trace with hash 363651666, now seen corresponding path program 1 times [2022-12-13 21:49:50,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:49:50,362 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [520550381] [2022-12-13 21:49:50,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:49:50,362 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:49:50,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:49:50,433 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:49:50,433 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:49:50,433 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [520550381] [2022-12-13 21:49:50,434 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [520550381] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:49:50,434 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:49:50,434 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 21:49:50,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1062492678] [2022-12-13 21:49:50,434 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:49:50,434 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 21:49:50,434 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:49:50,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 21:49:50,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-13 21:49:50,435 INFO L87 Difference]: Start difference. First operand 1220 states and 1862 transitions. Second operand has 5 states, 5 states have (on average 18.8) internal successors, (94), 4 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:49:50,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 21:49:50,741 INFO L93 Difference]: Finished difference Result 2394 states and 3677 transitions. [2022-12-13 21:49:50,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 21:49:50,741 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.8) internal successors, (94), 4 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2022-12-13 21:49:50,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 21:49:50,744 INFO L225 Difference]: With dead ends: 2394 [2022-12-13 21:49:50,744 INFO L226 Difference]: Without dead ends: 1220 [2022-12-13 21:49:50,745 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 [2022-12-13 21:49:50,746 INFO L413 NwaCegarLoop]: 124 mSDtfsCounter, 642 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 110 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 642 SdHoareTripleChecker+Valid, 128 SdHoareTripleChecker+Invalid, 115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 21:49:50,746 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [642 Valid, 128 Invalid, 115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 110 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 21:49:50,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1220 states. [2022-12-13 21:49:51,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1220 to 1220. [2022-12-13 21:49:51,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1220 states, 1219 states have (on average 1.5143560295324037) internal successors, (1846), 1219 states have internal predecessors, (1846), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:49:51,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1220 states to 1220 states and 1846 transitions. [2022-12-13 21:49:51,032 INFO L78 Accepts]: Start accepts. Automaton has 1220 states and 1846 transitions. Word has length 94 [2022-12-13 21:49:51,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 21:49:51,033 INFO L495 AbstractCegarLoop]: Abstraction has 1220 states and 1846 transitions. [2022-12-13 21:49:51,033 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.8) internal successors, (94), 4 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:49:51,033 INFO L276 IsEmpty]: Start isEmpty. Operand 1220 states and 1846 transitions. [2022-12-13 21:49:51,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2022-12-13 21:49:51,034 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 21:49:51,034 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:49:51,034 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-12-13 21:49:51,035 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 21:49:51,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:49:51,035 INFO L85 PathProgramCache]: Analyzing trace with hash -1773816869, now seen corresponding path program 1 times [2022-12-13 21:49:51,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:49:51,035 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [822403935] [2022-12-13 21:49:51,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:49:51,035 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:49:51,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:49:51,132 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:49:51,132 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:49:51,132 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [822403935] [2022-12-13 21:49:51,132 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [822403935] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:49:51,132 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:49:51,132 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 21:49:51,132 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1526422430] [2022-12-13 21:49:51,133 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:49:51,133 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 21:49:51,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:49:51,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 21:49:51,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-13 21:49:51,134 INFO L87 Difference]: Start difference. First operand 1220 states and 1846 transitions. Second operand has 5 states, 5 states have (on average 19.0) internal successors, (95), 4 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:49:51,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 21:49:51,415 INFO L93 Difference]: Finished difference Result 2378 states and 3627 transitions. [2022-12-13 21:49:51,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 21:49:51,415 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.0) internal successors, (95), 4 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 95 [2022-12-13 21:49:51,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 21:49:51,420 INFO L225 Difference]: With dead ends: 2378 [2022-12-13 21:49:51,420 INFO L226 Difference]: Without dead ends: 1220 [2022-12-13 21:49:51,422 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 [2022-12-13 21:49:51,423 INFO L413 NwaCegarLoop]: 124 mSDtfsCounter, 590 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 108 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 590 SdHoareTripleChecker+Valid, 160 SdHoareTripleChecker+Invalid, 113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 21:49:51,423 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [590 Valid, 160 Invalid, 113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 108 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 21:49:51,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1220 states. [2022-12-13 21:49:51,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1220 to 1220. [2022-12-13 21:49:51,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1220 states, 1219 states have (on average 1.5012305168170632) internal successors, (1830), 1219 states have internal predecessors, (1830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:49:51,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1220 states to 1220 states and 1830 transitions. [2022-12-13 21:49:51,633 INFO L78 Accepts]: Start accepts. Automaton has 1220 states and 1830 transitions. Word has length 95 [2022-12-13 21:49:51,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 21:49:51,633 INFO L495 AbstractCegarLoop]: Abstraction has 1220 states and 1830 transitions. [2022-12-13 21:49:51,633 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.0) internal successors, (95), 4 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:49:51,633 INFO L276 IsEmpty]: Start isEmpty. Operand 1220 states and 1830 transitions. [2022-12-13 21:49:51,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-12-13 21:49:51,634 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 21:49:51,634 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:49:51,634 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-12-13 21:49:51,634 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 21:49:51,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:49:51,634 INFO L85 PathProgramCache]: Analyzing trace with hash 1258237146, now seen corresponding path program 1 times [2022-12-13 21:49:51,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:49:51,634 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1336521680] [2022-12-13 21:49:51,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:49:51,634 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:49:51,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:49:51,706 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:49:51,706 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:49:51,706 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1336521680] [2022-12-13 21:49:51,706 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1336521680] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:49:51,707 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:49:51,707 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 21:49:51,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [850563792] [2022-12-13 21:49:51,707 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:49:51,707 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 21:49:51,707 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:49:51,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 21:49:51,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-13 21:49:51,708 INFO L87 Difference]: Start difference. First operand 1220 states and 1830 transitions. Second operand has 5 states, 5 states have (on average 19.2) internal successors, (96), 4 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:49:52,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 21:49:52,019 INFO L93 Difference]: Finished difference Result 2382 states and 3600 transitions. [2022-12-13 21:49:52,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 21:49:52,020 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.2) internal successors, (96), 4 states have internal predecessors, (96), 0 states have call successors, (0), 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 96 [2022-12-13 21:49:52,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 21:49:52,022 INFO L225 Difference]: With dead ends: 2382 [2022-12-13 21:49:52,022 INFO L226 Difference]: Without dead ends: 1220 [2022-12-13 21:49:52,023 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 [2022-12-13 21:49:52,023 INFO L413 NwaCegarLoop]: 124 mSDtfsCounter, 595 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 595 SdHoareTripleChecker+Valid, 152 SdHoareTripleChecker+Invalid, 111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 21:49:52,024 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [595 Valid, 152 Invalid, 111 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 106 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 21:49:52,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1220 states. [2022-12-13 21:49:52,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1220 to 1220. [2022-12-13 21:49:52,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1220 states, 1219 states have (on average 1.4881050041017228) internal successors, (1814), 1219 states have internal predecessors, (1814), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:49:52,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1220 states to 1220 states and 1814 transitions. [2022-12-13 21:49:52,188 INFO L78 Accepts]: Start accepts. Automaton has 1220 states and 1814 transitions. Word has length 96 [2022-12-13 21:49:52,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 21:49:52,188 INFO L495 AbstractCegarLoop]: Abstraction has 1220 states and 1814 transitions. [2022-12-13 21:49:52,188 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.2) internal successors, (96), 4 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:49:52,188 INFO L276 IsEmpty]: Start isEmpty. Operand 1220 states and 1814 transitions. [2022-12-13 21:49:52,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-12-13 21:49:52,189 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 21:49:52,189 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:49:52,189 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-12-13 21:49:52,189 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 21:49:52,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:49:52,189 INFO L85 PathProgramCache]: Analyzing trace with hash -1600906961, now seen corresponding path program 1 times [2022-12-13 21:49:52,189 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:49:52,189 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2032512685] [2022-12-13 21:49:52,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:49:52,189 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:49:52,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:49:52,262 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:49:52,263 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:49:52,263 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2032512685] [2022-12-13 21:49:52,263 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2032512685] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:49:52,263 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:49:52,263 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 21:49:52,263 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [542476836] [2022-12-13 21:49:52,263 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:49:52,264 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 21:49:52,264 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:49:52,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 21:49:52,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-13 21:49:52,265 INFO L87 Difference]: Start difference. First operand 1220 states and 1814 transitions. Second operand has 5 states, 5 states have (on average 19.4) internal successors, (97), 4 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:49:52,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 21:49:52,608 INFO L93 Difference]: Finished difference Result 2386 states and 3573 transitions. [2022-12-13 21:49:52,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 21:49:52,608 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.4) internal successors, (97), 4 states have internal predecessors, (97), 0 states have call successors, (0), 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 97 [2022-12-13 21:49:52,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 21:49:52,615 INFO L225 Difference]: With dead ends: 2386 [2022-12-13 21:49:52,615 INFO L226 Difference]: Without dead ends: 1220 [2022-12-13 21:49:52,617 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 [2022-12-13 21:49:52,617 INFO L413 NwaCegarLoop]: 124 mSDtfsCounter, 600 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 600 SdHoareTripleChecker+Valid, 144 SdHoareTripleChecker+Invalid, 109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 21:49:52,618 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [600 Valid, 144 Invalid, 109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 21:49:52,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1220 states. [2022-12-13 21:49:52,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1220 to 1220. [2022-12-13 21:49:52,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1220 states, 1219 states have (on average 1.4749794913863823) internal successors, (1798), 1219 states have internal predecessors, (1798), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:49:52,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1220 states to 1220 states and 1798 transitions. [2022-12-13 21:49:52,786 INFO L78 Accepts]: Start accepts. Automaton has 1220 states and 1798 transitions. Word has length 97 [2022-12-13 21:49:52,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 21:49:52,786 INFO L495 AbstractCegarLoop]: Abstraction has 1220 states and 1798 transitions. [2022-12-13 21:49:52,786 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.4) internal successors, (97), 4 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:49:52,786 INFO L276 IsEmpty]: Start isEmpty. Operand 1220 states and 1798 transitions. [2022-12-13 21:49:52,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-12-13 21:49:52,787 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 21:49:52,787 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:49:52,787 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-12-13 21:49:52,787 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 21:49:52,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:49:52,787 INFO L85 PathProgramCache]: Analyzing trace with hash -927186322, now seen corresponding path program 1 times [2022-12-13 21:49:52,787 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:49:52,787 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1505124446] [2022-12-13 21:49:52,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:49:52,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:49:52,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:49:52,853 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:49:52,853 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:49:52,853 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1505124446] [2022-12-13 21:49:52,853 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1505124446] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:49:52,853 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:49:52,854 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 21:49:52,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [603270228] [2022-12-13 21:49:52,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:49:52,854 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 21:49:52,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:49:52,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 21:49:52,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-13 21:49:52,855 INFO L87 Difference]: Start difference. First operand 1220 states and 1798 transitions. Second operand has 5 states, 5 states have (on average 19.6) internal successors, (98), 4 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:49:53,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 21:49:53,231 INFO L93 Difference]: Finished difference Result 2374 states and 3529 transitions. [2022-12-13 21:49:53,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 21:49:53,232 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.6) internal successors, (98), 4 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 98 [2022-12-13 21:49:53,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 21:49:53,234 INFO L225 Difference]: With dead ends: 2374 [2022-12-13 21:49:53,234 INFO L226 Difference]: Without dead ends: 1220 [2022-12-13 21:49:53,234 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 [2022-12-13 21:49:53,235 INFO L413 NwaCegarLoop]: 124 mSDtfsCounter, 558 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 102 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 558 SdHoareTripleChecker+Valid, 168 SdHoareTripleChecker+Invalid, 107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 21:49:53,235 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [558 Valid, 168 Invalid, 107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 102 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 21:49:53,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1220 states. [2022-12-13 21:49:53,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1220 to 1220. [2022-12-13 21:49:53,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1220 states, 1219 states have (on average 1.4618539786710418) internal successors, (1782), 1219 states have internal predecessors, (1782), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:49:53,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1220 states to 1220 states and 1782 transitions. [2022-12-13 21:49:53,409 INFO L78 Accepts]: Start accepts. Automaton has 1220 states and 1782 transitions. Word has length 98 [2022-12-13 21:49:53,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 21:49:53,409 INFO L495 AbstractCegarLoop]: Abstraction has 1220 states and 1782 transitions. [2022-12-13 21:49:53,409 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.6) internal successors, (98), 4 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:49:53,409 INFO L276 IsEmpty]: Start isEmpty. Operand 1220 states and 1782 transitions. [2022-12-13 21:49:53,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-12-13 21:49:53,410 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 21:49:53,410 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:49:53,410 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-12-13 21:49:53,410 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 21:49:53,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:49:53,411 INFO L85 PathProgramCache]: Analyzing trace with hash -1240076109, now seen corresponding path program 1 times [2022-12-13 21:49:53,411 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:49:53,411 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [586155095] [2022-12-13 21:49:53,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:49:53,411 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:49:53,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:49:53,567 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:49:53,568 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:49:53,568 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [586155095] [2022-12-13 21:49:53,568 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [586155095] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:49:53,568 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:49:53,568 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 21:49:53,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [6120811] [2022-12-13 21:49:53,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:49:53,569 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 21:49:53,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:49:53,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 21:49:53,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-13 21:49:53,569 INFO L87 Difference]: Start difference. First operand 1220 states and 1782 transitions. Second operand has 5 states, 5 states have (on average 19.8) internal successors, (99), 5 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:49:53,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 21:49:53,872 INFO L93 Difference]: Finished difference Result 1484 states and 2153 transitions. [2022-12-13 21:49:53,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 21:49:53,872 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.8) internal successors, (99), 5 states have internal predecessors, (99), 0 states have call successors, (0), 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 99 [2022-12-13 21:49:53,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 21:49:53,876 INFO L225 Difference]: With dead ends: 1484 [2022-12-13 21:49:53,877 INFO L226 Difference]: Without dead ends: 1482 [2022-12-13 21:49:53,877 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 [2022-12-13 21:49:53,877 INFO L413 NwaCegarLoop]: 228 mSDtfsCounter, 194 mSDsluCounter, 665 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 194 SdHoareTripleChecker+Valid, 893 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 21:49:53,878 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [194 Valid, 893 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 21:49:53,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1482 states. [2022-12-13 21:49:54,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1482 to 1220. [2022-12-13 21:49:54,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1220 states, 1219 states have (on average 1.4552912223133716) internal successors, (1774), 1219 states have internal predecessors, (1774), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:49:54,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1220 states to 1220 states and 1774 transitions. [2022-12-13 21:49:54,123 INFO L78 Accepts]: Start accepts. Automaton has 1220 states and 1774 transitions. Word has length 99 [2022-12-13 21:49:54,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 21:49:54,123 INFO L495 AbstractCegarLoop]: Abstraction has 1220 states and 1774 transitions. [2022-12-13 21:49:54,123 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.8) internal successors, (99), 5 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:49:54,123 INFO L276 IsEmpty]: Start isEmpty. Operand 1220 states and 1774 transitions. [2022-12-13 21:49:54,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2022-12-13 21:49:54,124 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 21:49:54,124 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:49:54,124 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-12-13 21:49:54,124 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 21:49:54,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:49:54,124 INFO L85 PathProgramCache]: Analyzing trace with hash 2017553339, now seen corresponding path program 1 times [2022-12-13 21:49:54,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:49:54,124 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [817274971] [2022-12-13 21:49:54,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:49:54,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:49:54,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:49:54,519 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:49:54,520 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:49:54,520 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [817274971] [2022-12-13 21:49:54,520 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [817274971] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:49:54,520 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:49:54,520 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-12-13 21:49:54,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [241670255] [2022-12-13 21:49:54,520 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:49:54,521 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-12-13 21:49:54,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:49:54,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-12-13 21:49:54,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2022-12-13 21:49:54,522 INFO L87 Difference]: Start difference. First operand 1220 states and 1774 transitions. Second operand has 13 states, 13 states have (on average 7.6923076923076925) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:49:55,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 21:49:55,691 INFO L93 Difference]: Finished difference Result 3424 states and 5014 transitions. [2022-12-13 21:49:55,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-12-13 21:49:55,692 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 7.6923076923076925) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 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 100 [2022-12-13 21:49:55,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 21:49:55,696 INFO L225 Difference]: With dead ends: 3424 [2022-12-13 21:49:55,696 INFO L226 Difference]: Without dead ends: 2347 [2022-12-13 21:49:55,697 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=153, Invalid=447, Unknown=0, NotChecked=0, Total=600 [2022-12-13 21:49:55,697 INFO L413 NwaCegarLoop]: 119 mSDtfsCounter, 1196 mSDsluCounter, 463 mSDsCounter, 0 mSdLazyCounter, 566 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1196 SdHoareTripleChecker+Valid, 582 SdHoareTripleChecker+Invalid, 575 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 566 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-13 21:49:55,698 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1196 Valid, 582 Invalid, 575 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 566 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-13 21:49:55,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2347 states. [2022-12-13 21:49:55,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2347 to 1220. [2022-12-13 21:49:55,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1220 states, 1219 states have (on average 1.4511894995898278) internal successors, (1769), 1219 states have internal predecessors, (1769), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:49:55,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1220 states to 1220 states and 1769 transitions. [2022-12-13 21:49:55,935 INFO L78 Accepts]: Start accepts. Automaton has 1220 states and 1769 transitions. Word has length 100 [2022-12-13 21:49:55,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 21:49:55,936 INFO L495 AbstractCegarLoop]: Abstraction has 1220 states and 1769 transitions. [2022-12-13 21:49:55,936 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.6923076923076925) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:49:55,936 INFO L276 IsEmpty]: Start isEmpty. Operand 1220 states and 1769 transitions. [2022-12-13 21:49:55,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2022-12-13 21:49:55,936 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 21:49:55,936 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:49:55,937 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-12-13 21:49:55,937 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 21:49:55,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:49:55,937 INFO L85 PathProgramCache]: Analyzing trace with hash 1836312485, now seen corresponding path program 1 times [2022-12-13 21:49:55,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:49:55,937 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1968545382] [2022-12-13 21:49:55,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:49:55,937 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:49:55,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:49:56,155 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:49:56,156 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:49:56,156 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1968545382] [2022-12-13 21:49:56,156 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1968545382] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:49:56,156 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:49:56,156 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-12-13 21:49:56,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1823276915] [2022-12-13 21:49:56,156 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:49:56,157 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-13 21:49:56,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:49:56,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-13 21:49:56,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-12-13 21:49:56,157 INFO L87 Difference]: Start difference. First operand 1220 states and 1769 transitions. Second operand has 9 states, 9 states have (on average 11.11111111111111) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:49:57,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 21:49:57,142 INFO L93 Difference]: Finished difference Result 3354 states and 4911 transitions. [2022-12-13 21:49:57,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-12-13 21:49:57,142 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 11.11111111111111) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 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 100 [2022-12-13 21:49:57,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 21:49:57,151 INFO L225 Difference]: With dead ends: 3354 [2022-12-13 21:49:57,151 INFO L226 Difference]: Without dead ends: 2242 [2022-12-13 21:49:57,152 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=82, Invalid=190, Unknown=0, NotChecked=0, Total=272 [2022-12-13 21:49:57,153 INFO L413 NwaCegarLoop]: 119 mSDtfsCounter, 1637 mSDsluCounter, 261 mSDsCounter, 0 mSdLazyCounter, 304 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1637 SdHoareTripleChecker+Valid, 380 SdHoareTripleChecker+Invalid, 308 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 304 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-13 21:49:57,153 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1637 Valid, 380 Invalid, 308 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 304 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-13 21:49:57,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2242 states. [2022-12-13 21:49:57,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2242 to 1220. [2022-12-13 21:49:57,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1220 states, 1219 states have (on average 1.450369155045119) internal successors, (1768), 1219 states have internal predecessors, (1768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:49:57,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1220 states to 1220 states and 1768 transitions. [2022-12-13 21:49:57,432 INFO L78 Accepts]: Start accepts. Automaton has 1220 states and 1768 transitions. Word has length 100 [2022-12-13 21:49:57,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 21:49:57,432 INFO L495 AbstractCegarLoop]: Abstraction has 1220 states and 1768 transitions. [2022-12-13 21:49:57,432 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.11111111111111) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:49:57,432 INFO L276 IsEmpty]: Start isEmpty. Operand 1220 states and 1768 transitions. [2022-12-13 21:49:57,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2022-12-13 21:49:57,433 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 21:49:57,433 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:49:57,433 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-12-13 21:49:57,433 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 21:49:57,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:49:57,433 INFO L85 PathProgramCache]: Analyzing trace with hash -332342721, now seen corresponding path program 1 times [2022-12-13 21:49:57,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:49:57,433 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [813899865] [2022-12-13 21:49:57,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:49:57,434 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:49:57,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:49:57,688 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:49:57,688 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:49:57,688 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [813899865] [2022-12-13 21:49:57,688 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [813899865] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:49:57,688 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:49:57,688 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-12-13 21:49:57,689 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1885425874] [2022-12-13 21:49:57,689 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:49:57,689 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-12-13 21:49:57,689 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:49:57,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-12-13 21:49:57,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-12-13 21:49:57,690 INFO L87 Difference]: Start difference. First operand 1220 states and 1768 transitions. Second operand has 10 states, 10 states have (on average 10.0) internal successors, (100), 9 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:49:59,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 21:49:59,026 INFO L93 Difference]: Finished difference Result 3469 states and 5072 transitions. [2022-12-13 21:49:59,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-12-13 21:49:59,027 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 10.0) internal successors, (100), 9 states have internal predecessors, (100), 0 states have call successors, (0), 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 100 [2022-12-13 21:49:59,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 21:49:59,031 INFO L225 Difference]: With dead ends: 3469 [2022-12-13 21:49:59,031 INFO L226 Difference]: Without dead ends: 2362 [2022-12-13 21:49:59,032 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=120, Invalid=342, Unknown=0, NotChecked=0, Total=462 [2022-12-13 21:49:59,032 INFO L413 NwaCegarLoop]: 196 mSDtfsCounter, 1224 mSDsluCounter, 610 mSDsCounter, 0 mSdLazyCounter, 733 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1224 SdHoareTripleChecker+Valid, 806 SdHoareTripleChecker+Invalid, 739 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 733 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-12-13 21:49:59,032 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1224 Valid, 806 Invalid, 739 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 733 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-12-13 21:49:59,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2362 states. [2022-12-13 21:49:59,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2362 to 1220. [2022-12-13 21:49:59,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1220 states, 1219 states have (on average 1.4487284659557014) internal successors, (1766), 1219 states have internal predecessors, (1766), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:49:59,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1220 states to 1220 states and 1766 transitions. [2022-12-13 21:49:59,345 INFO L78 Accepts]: Start accepts. Automaton has 1220 states and 1766 transitions. Word has length 100 [2022-12-13 21:49:59,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 21:49:59,345 INFO L495 AbstractCegarLoop]: Abstraction has 1220 states and 1766 transitions. [2022-12-13 21:49:59,345 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.0) internal successors, (100), 9 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:49:59,345 INFO L276 IsEmpty]: Start isEmpty. Operand 1220 states and 1766 transitions. [2022-12-13 21:49:59,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-12-13 21:49:59,346 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 21:49:59,346 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:49:59,346 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-12-13 21:49:59,346 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 21:49:59,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:49:59,346 INFO L85 PathProgramCache]: Analyzing trace with hash -60484552, now seen corresponding path program 1 times [2022-12-13 21:49:59,346 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:49:59,346 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2036765181] [2022-12-13 21:49:59,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:49:59,346 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:49:59,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:49:59,580 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:49:59,580 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:49:59,580 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2036765181] [2022-12-13 21:49:59,580 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2036765181] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:49:59,581 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:49:59,581 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-12-13 21:49:59,581 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2035645952] [2022-12-13 21:49:59,581 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:49:59,581 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-12-13 21:49:59,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:49:59,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-12-13 21:49:59,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-12-13 21:49:59,582 INFO L87 Difference]: Start difference. First operand 1220 states and 1766 transitions. Second operand has 10 states, 10 states have (on average 10.1) internal successors, (101), 9 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:50:01,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 21:50:01,013 INFO L93 Difference]: Finished difference Result 3454 states and 5046 transitions. [2022-12-13 21:50:01,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-12-13 21:50:01,014 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 10.1) internal successors, (101), 9 states have internal predecessors, (101), 0 states have call successors, (0), 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 101 [2022-12-13 21:50:01,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 21:50:01,016 INFO L225 Difference]: With dead ends: 3454 [2022-12-13 21:50:01,016 INFO L226 Difference]: Without dead ends: 2357 [2022-12-13 21:50:01,017 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=120, Invalid=342, Unknown=0, NotChecked=0, Total=462 [2022-12-13 21:50:01,018 INFO L413 NwaCegarLoop]: 136 mSDtfsCounter, 1493 mSDsluCounter, 490 mSDsCounter, 0 mSdLazyCounter, 580 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1493 SdHoareTripleChecker+Valid, 626 SdHoareTripleChecker+Invalid, 587 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 580 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-13 21:50:01,018 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1493 Valid, 626 Invalid, 587 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 580 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-13 21:50:01,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2357 states. [2022-12-13 21:50:01,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2357 to 1220. [2022-12-13 21:50:01,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1220 states, 1219 states have (on average 1.4454470877768664) internal successors, (1762), 1219 states have internal predecessors, (1762), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:50:01,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1220 states to 1220 states and 1762 transitions. [2022-12-13 21:50:01,367 INFO L78 Accepts]: Start accepts. Automaton has 1220 states and 1762 transitions. Word has length 101 [2022-12-13 21:50:01,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 21:50:01,367 INFO L495 AbstractCegarLoop]: Abstraction has 1220 states and 1762 transitions. [2022-12-13 21:50:01,367 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.1) internal successors, (101), 9 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:50:01,367 INFO L276 IsEmpty]: Start isEmpty. Operand 1220 states and 1762 transitions. [2022-12-13 21:50:01,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-12-13 21:50:01,367 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 21:50:01,367 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:50:01,368 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-12-13 21:50:01,368 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 21:50:01,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:50:01,368 INFO L85 PathProgramCache]: Analyzing trace with hash -427226295, now seen corresponding path program 1 times [2022-12-13 21:50:01,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:50:01,368 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1534102689] [2022-12-13 21:50:01,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:50:01,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:50:01,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:50:01,541 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:50:01,541 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:50:01,541 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1534102689] [2022-12-13 21:50:01,542 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1534102689] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:50:01,542 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:50:01,542 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-12-13 21:50:01,542 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [877828846] [2022-12-13 21:50:01,542 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:50:01,542 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-12-13 21:50:01,542 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:50:01,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-12-13 21:50:01,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-12-13 21:50:01,543 INFO L87 Difference]: Start difference. First operand 1220 states and 1762 transitions. Second operand has 10 states, 10 states have (on average 10.2) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:50:02,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 21:50:02,878 INFO L93 Difference]: Finished difference Result 3324 states and 4842 transitions. [2022-12-13 21:50:02,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-12-13 21:50:02,879 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 10.2) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 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 102 [2022-12-13 21:50:02,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 21:50:02,883 INFO L225 Difference]: With dead ends: 3324 [2022-12-13 21:50:02,884 INFO L226 Difference]: Without dead ends: 2302 [2022-12-13 21:50:02,885 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=130, Invalid=332, Unknown=0, NotChecked=0, Total=462 [2022-12-13 21:50:02,885 INFO L413 NwaCegarLoop]: 119 mSDtfsCounter, 1359 mSDsluCounter, 333 mSDsCounter, 0 mSdLazyCounter, 396 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1359 SdHoareTripleChecker+Valid, 452 SdHoareTripleChecker+Invalid, 403 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 396 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-13 21:50:02,885 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1359 Valid, 452 Invalid, 403 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 396 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-13 21:50:02,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2302 states. [2022-12-13 21:50:03,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2302 to 1220. [2022-12-13 21:50:03,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1220 states, 1219 states have (on average 1.439704675963905) internal successors, (1755), 1219 states have internal predecessors, (1755), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:50:03,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1220 states to 1220 states and 1755 transitions. [2022-12-13 21:50:03,280 INFO L78 Accepts]: Start accepts. Automaton has 1220 states and 1755 transitions. Word has length 102 [2022-12-13 21:50:03,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 21:50:03,280 INFO L495 AbstractCegarLoop]: Abstraction has 1220 states and 1755 transitions. [2022-12-13 21:50:03,281 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.2) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:50:03,281 INFO L276 IsEmpty]: Start isEmpty. Operand 1220 states and 1755 transitions. [2022-12-13 21:50:03,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-12-13 21:50:03,281 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 21:50:03,281 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:50:03,281 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-12-13 21:50:03,281 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 21:50:03,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:50:03,282 INFO L85 PathProgramCache]: Analyzing trace with hash -916891525, now seen corresponding path program 1 times [2022-12-13 21:50:03,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:50:03,282 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [470939130] [2022-12-13 21:50:03,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:50:03,282 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:50:03,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:50:03,537 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:50:03,538 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:50:03,538 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [470939130] [2022-12-13 21:50:03,538 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [470939130] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:50:03,538 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:50:03,538 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-12-13 21:50:03,538 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [731576493] [2022-12-13 21:50:03,538 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:50:03,538 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-12-13 21:50:03,538 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:50:03,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-12-13 21:50:03,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-12-13 21:50:03,539 INFO L87 Difference]: Start difference. First operand 1220 states and 1755 transitions. Second operand has 10 states, 10 states have (on average 10.3) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:50:04,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 21:50:04,880 INFO L93 Difference]: Finished difference Result 3379 states and 4911 transitions. [2022-12-13 21:50:04,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-12-13 21:50:04,880 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 10.3) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 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 103 [2022-12-13 21:50:04,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 21:50:04,883 INFO L225 Difference]: With dead ends: 3379 [2022-12-13 21:50:04,883 INFO L226 Difference]: Without dead ends: 2327 [2022-12-13 21:50:04,884 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=120, Invalid=342, Unknown=0, NotChecked=0, Total=462 [2022-12-13 21:50:04,884 INFO L413 NwaCegarLoop]: 129 mSDtfsCounter, 1437 mSDsluCounter, 472 mSDsCounter, 0 mSdLazyCounter, 538 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1437 SdHoareTripleChecker+Valid, 601 SdHoareTripleChecker+Invalid, 545 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 538 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-13 21:50:04,884 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1437 Valid, 601 Invalid, 545 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 538 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-13 21:50:04,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2327 states. [2022-12-13 21:50:05,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2327 to 1220. [2022-12-13 21:50:05,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1220 states, 1219 states have (on average 1.434782608695652) internal successors, (1749), 1219 states have internal predecessors, (1749), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:50:05,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1220 states to 1220 states and 1749 transitions. [2022-12-13 21:50:05,301 INFO L78 Accepts]: Start accepts. Automaton has 1220 states and 1749 transitions. Word has length 103 [2022-12-13 21:50:05,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 21:50:05,301 INFO L495 AbstractCegarLoop]: Abstraction has 1220 states and 1749 transitions. [2022-12-13 21:50:05,301 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.3) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:50:05,301 INFO L276 IsEmpty]: Start isEmpty. Operand 1220 states and 1749 transitions. [2022-12-13 21:50:05,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2022-12-13 21:50:05,301 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 21:50:05,302 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:50:05,302 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-12-13 21:50:05,302 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 21:50:05,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:50:05,302 INFO L85 PathProgramCache]: Analyzing trace with hash -1323186080, now seen corresponding path program 1 times [2022-12-13 21:50:05,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:50:05,302 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1527458482] [2022-12-13 21:50:05,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:50:05,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:50:05,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:50:05,762 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:50:05,762 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:50:05,762 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1527458482] [2022-12-13 21:50:05,762 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1527458482] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:50:05,762 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:50:05,763 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-12-13 21:50:05,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1435580653] [2022-12-13 21:50:05,763 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:50:05,763 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-12-13 21:50:05,763 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:50:05,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-12-13 21:50:05,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2022-12-13 21:50:05,764 INFO L87 Difference]: Start difference. First operand 1220 states and 1749 transitions. Second operand has 14 states, 14 states have (on average 7.428571428571429) internal successors, (104), 14 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:50:10,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 21:50:10,149 INFO L93 Difference]: Finished difference Result 6812 states and 9954 transitions. [2022-12-13 21:50:10,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-12-13 21:50:10,150 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 7.428571428571429) internal successors, (104), 14 states have internal predecessors, (104), 0 states have call successors, (0), 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 104 [2022-12-13 21:50:10,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 21:50:10,156 INFO L225 Difference]: With dead ends: 6812 [2022-12-13 21:50:10,156 INFO L226 Difference]: Without dead ends: 6498 [2022-12-13 21:50:10,157 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 150 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=214, Invalid=716, Unknown=0, NotChecked=0, Total=930 [2022-12-13 21:50:10,158 INFO L413 NwaCegarLoop]: 546 mSDtfsCounter, 1548 mSDsluCounter, 3234 mSDsCounter, 0 mSdLazyCounter, 559 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1548 SdHoareTripleChecker+Valid, 3780 SdHoareTripleChecker+Invalid, 564 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 559 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-12-13 21:50:10,158 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1548 Valid, 3780 Invalid, 564 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 559 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-12-13 21:50:10,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6498 states. [2022-12-13 21:50:10,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6498 to 1194. [2022-12-13 21:50:10,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1194 states, 1193 states have (on average 1.4341994970662195) internal successors, (1711), 1193 states have internal predecessors, (1711), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:50:10,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1194 states to 1194 states and 1711 transitions. [2022-12-13 21:50:10,770 INFO L78 Accepts]: Start accepts. Automaton has 1194 states and 1711 transitions. Word has length 104 [2022-12-13 21:50:10,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 21:50:10,770 INFO L495 AbstractCegarLoop]: Abstraction has 1194 states and 1711 transitions. [2022-12-13 21:50:10,770 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.428571428571429) internal successors, (104), 14 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:50:10,770 INFO L276 IsEmpty]: Start isEmpty. Operand 1194 states and 1711 transitions. [2022-12-13 21:50:10,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2022-12-13 21:50:10,770 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 21:50:10,771 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:50:10,771 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-12-13 21:50:10,771 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 21:50:10,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:50:10,771 INFO L85 PathProgramCache]: Analyzing trace with hash -977108255, now seen corresponding path program 1 times [2022-12-13 21:50:10,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:50:10,771 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1058643037] [2022-12-13 21:50:10,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:50:10,771 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:50:10,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:50:12,965 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:50:12,965 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:50:12,965 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1058643037] [2022-12-13 21:50:12,965 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1058643037] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:50:12,965 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:50:12,965 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [39] imperfect sequences [] total 39 [2022-12-13 21:50:12,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1395222108] [2022-12-13 21:50:12,965 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:50:12,966 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2022-12-13 21:50:12,966 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:50:12,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2022-12-13 21:50:12,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=1391, Unknown=0, NotChecked=0, Total=1482 [2022-12-13 21:50:12,967 INFO L87 Difference]: Start difference. First operand 1194 states and 1711 transitions. Second operand has 39 states, 39 states have (on average 2.6666666666666665) internal successors, (104), 39 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:50:30,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 21:50:30,088 INFO L93 Difference]: Finished difference Result 9534 states and 13931 transitions. [2022-12-13 21:50:30,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-12-13 21:50:30,089 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 2.6666666666666665) internal successors, (104), 39 states have internal predecessors, (104), 0 states have call successors, (0), 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 104 [2022-12-13 21:50:30,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 21:50:30,098 INFO L225 Difference]: With dead ends: 9534 [2022-12-13 21:50:30,098 INFO L226 Difference]: Without dead ends: 9260 [2022-12-13 21:50:30,101 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 720 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=784, Invalid=4618, Unknown=0, NotChecked=0, Total=5402 [2022-12-13 21:50:30,101 INFO L413 NwaCegarLoop]: 897 mSDtfsCounter, 2594 mSDsluCounter, 20708 mSDsCounter, 0 mSdLazyCounter, 13998 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2594 SdHoareTripleChecker+Valid, 21605 SdHoareTripleChecker+Invalid, 14016 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 13998 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.7s IncrementalHoareTripleChecker+Time [2022-12-13 21:50:30,101 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2594 Valid, 21605 Invalid, 14016 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [18 Valid, 13998 Invalid, 0 Unknown, 0 Unchecked, 7.7s Time] [2022-12-13 21:50:30,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9260 states. [2022-12-13 21:50:30,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9260 to 1227. [2022-12-13 21:50:30,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1227 states, 1226 states have (on average 1.429037520391517) internal successors, (1752), 1226 states have internal predecessors, (1752), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:50:30,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1227 states to 1227 states and 1752 transitions. [2022-12-13 21:50:30,864 INFO L78 Accepts]: Start accepts. Automaton has 1227 states and 1752 transitions. Word has length 104 [2022-12-13 21:50:30,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 21:50:30,864 INFO L495 AbstractCegarLoop]: Abstraction has 1227 states and 1752 transitions. [2022-12-13 21:50:30,864 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 2.6666666666666665) internal successors, (104), 39 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:50:30,864 INFO L276 IsEmpty]: Start isEmpty. Operand 1227 states and 1752 transitions. [2022-12-13 21:50:30,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2022-12-13 21:50:30,865 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 21:50:30,865 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:50:30,865 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-12-13 21:50:30,865 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 21:50:30,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:50:30,865 INFO L85 PathProgramCache]: Analyzing trace with hash 1621509664, now seen corresponding path program 1 times [2022-12-13 21:50:30,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:50:30,865 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [528018600] [2022-12-13 21:50:30,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:50:30,866 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:50:30,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:50:31,260 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:50:31,260 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:50:31,260 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [528018600] [2022-12-13 21:50:31,261 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [528018600] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:50:31,261 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:50:31,261 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-12-13 21:50:31,261 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725299380] [2022-12-13 21:50:31,261 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:50:31,261 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-12-13 21:50:31,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:50:31,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-12-13 21:50:31,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2022-12-13 21:50:31,262 INFO L87 Difference]: Start difference. First operand 1227 states and 1752 transitions. Second operand has 13 states, 13 states have (on average 8.0) internal successors, (104), 13 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:50:35,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 21:50:35,125 INFO L93 Difference]: Finished difference Result 4586 states and 6686 transitions. [2022-12-13 21:50:35,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-12-13 21:50:35,126 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 8.0) internal successors, (104), 13 states have internal predecessors, (104), 0 states have call successors, (0), 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 104 [2022-12-13 21:50:35,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 21:50:35,130 INFO L225 Difference]: With dead ends: 4586 [2022-12-13 21:50:35,130 INFO L226 Difference]: Without dead ends: 4312 [2022-12-13 21:50:35,131 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=153, Invalid=447, Unknown=0, NotChecked=0, Total=600 [2022-12-13 21:50:35,131 INFO L413 NwaCegarLoop]: 378 mSDtfsCounter, 1378 mSDsluCounter, 1529 mSDsCounter, 0 mSdLazyCounter, 360 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1378 SdHoareTripleChecker+Valid, 1907 SdHoareTripleChecker+Invalid, 364 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 360 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-13 21:50:35,131 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1378 Valid, 1907 Invalid, 364 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 360 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-13 21:50:35,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4312 states. [2022-12-13 21:50:36,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4312 to 1224. [2022-12-13 21:50:36,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1224 states, 1223 states have (on average 1.4251839738348324) internal successors, (1743), 1223 states have internal predecessors, (1743), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:50:36,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1224 states to 1224 states and 1743 transitions. [2022-12-13 21:50:36,019 INFO L78 Accepts]: Start accepts. Automaton has 1224 states and 1743 transitions. Word has length 104 [2022-12-13 21:50:36,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 21:50:36,020 INFO L495 AbstractCegarLoop]: Abstraction has 1224 states and 1743 transitions. [2022-12-13 21:50:36,020 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.0) internal successors, (104), 13 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:50:36,020 INFO L276 IsEmpty]: Start isEmpty. Operand 1224 states and 1743 transitions. [2022-12-13 21:50:36,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2022-12-13 21:50:36,020 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 21:50:36,020 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:50:36,020 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-12-13 21:50:36,021 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 21:50:36,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:50:36,021 INFO L85 PathProgramCache]: Analyzing trace with hash -1886035071, now seen corresponding path program 1 times [2022-12-13 21:50:36,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:50:36,021 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [103545342] [2022-12-13 21:50:36,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:50:36,021 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:50:36,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:50:36,413 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:50:36,413 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:50:36,413 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [103545342] [2022-12-13 21:50:36,413 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [103545342] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:50:36,413 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:50:36,413 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-12-13 21:50:36,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2095320760] [2022-12-13 21:50:36,414 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:50:36,414 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-12-13 21:50:36,414 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:50:36,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-12-13 21:50:36,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2022-12-13 21:50:36,415 INFO L87 Difference]: Start difference. First operand 1224 states and 1743 transitions. Second operand has 13 states, 13 states have (on average 8.0) internal successors, (104), 13 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:50:40,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 21:50:40,612 INFO L93 Difference]: Finished difference Result 4742 states and 6884 transitions. [2022-12-13 21:50:40,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-12-13 21:50:40,613 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 8.0) internal successors, (104), 13 states have internal predecessors, (104), 0 states have call successors, (0), 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 104 [2022-12-13 21:50:40,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 21:50:40,617 INFO L225 Difference]: With dead ends: 4742 [2022-12-13 21:50:40,617 INFO L226 Difference]: Without dead ends: 4438 [2022-12-13 21:50:40,618 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=153, Invalid=447, Unknown=0, NotChecked=0, Total=600 [2022-12-13 21:50:40,618 INFO L413 NwaCegarLoop]: 527 mSDtfsCounter, 1366 mSDsluCounter, 2370 mSDsCounter, 0 mSdLazyCounter, 454 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1366 SdHoareTripleChecker+Valid, 2897 SdHoareTripleChecker+Invalid, 458 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 454 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-13 21:50:40,618 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1366 Valid, 2897 Invalid, 458 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 454 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-13 21:50:40,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4438 states. [2022-12-13 21:50:41,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4438 to 1203. [2022-12-13 21:50:41,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1203 states, 1202 states have (on average 1.4251247920133112) internal successors, (1713), 1202 states have internal predecessors, (1713), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:50:41,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1203 states to 1203 states and 1713 transitions. [2022-12-13 21:50:41,501 INFO L78 Accepts]: Start accepts. Automaton has 1203 states and 1713 transitions. Word has length 104 [2022-12-13 21:50:41,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 21:50:41,501 INFO L495 AbstractCegarLoop]: Abstraction has 1203 states and 1713 transitions. [2022-12-13 21:50:41,501 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.0) internal successors, (104), 13 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:50:41,501 INFO L276 IsEmpty]: Start isEmpty. Operand 1203 states and 1713 transitions. [2022-12-13 21:50:41,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2022-12-13 21:50:41,501 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 21:50:41,501 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:50:41,502 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-12-13 21:50:41,502 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 21:50:41,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:50:41,502 INFO L85 PathProgramCache]: Analyzing trace with hash -189921857, now seen corresponding path program 1 times [2022-12-13 21:50:41,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:50:41,502 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1221111460] [2022-12-13 21:50:41,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:50:41,502 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:50:41,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:50:41,870 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:50:41,870 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:50:41,870 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1221111460] [2022-12-13 21:50:41,870 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1221111460] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:50:41,871 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:50:41,871 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-12-13 21:50:41,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [9853546] [2022-12-13 21:50:41,871 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:50:41,871 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-12-13 21:50:41,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:50:41,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-12-13 21:50:41,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2022-12-13 21:50:41,872 INFO L87 Difference]: Start difference. First operand 1203 states and 1713 transitions. Second operand has 12 states, 12 states have (on average 8.666666666666666) internal successors, (104), 12 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:50:48,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 21:50:48,286 INFO L93 Difference]: Finished difference Result 6609 states and 9654 transitions. [2022-12-13 21:50:48,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-12-13 21:50:48,286 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 8.666666666666666) internal successors, (104), 12 states have internal predecessors, (104), 0 states have call successors, (0), 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 104 [2022-12-13 21:50:48,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 21:50:48,291 INFO L225 Difference]: With dead ends: 6609 [2022-12-13 21:50:48,291 INFO L226 Difference]: Without dead ends: 6300 [2022-12-13 21:50:48,292 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=173, Invalid=427, Unknown=0, NotChecked=0, Total=600 [2022-12-13 21:50:48,292 INFO L413 NwaCegarLoop]: 490 mSDtfsCounter, 1175 mSDsluCounter, 2055 mSDsCounter, 0 mSdLazyCounter, 397 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1175 SdHoareTripleChecker+Valid, 2545 SdHoareTripleChecker+Invalid, 401 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 397 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-13 21:50:48,292 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1175 Valid, 2545 Invalid, 401 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 397 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-13 21:50:48,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6300 states. [2022-12-13 21:50:49,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6300 to 1172. [2022-12-13 21:50:49,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1172 states, 1171 states have (on average 1.4278394534585823) internal successors, (1672), 1171 states have internal predecessors, (1672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:50:49,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1172 states to 1172 states and 1672 transitions. [2022-12-13 21:50:49,290 INFO L78 Accepts]: Start accepts. Automaton has 1172 states and 1672 transitions. Word has length 104 [2022-12-13 21:50:49,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 21:50:49,291 INFO L495 AbstractCegarLoop]: Abstraction has 1172 states and 1672 transitions. [2022-12-13 21:50:49,291 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.666666666666666) internal successors, (104), 12 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:50:49,291 INFO L276 IsEmpty]: Start isEmpty. Operand 1172 states and 1672 transitions. [2022-12-13 21:50:49,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2022-12-13 21:50:49,291 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 21:50:49,291 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:50:49,292 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-12-13 21:50:49,292 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 21:50:49,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:50:49,292 INFO L85 PathProgramCache]: Analyzing trace with hash 1844155757, now seen corresponding path program 1 times [2022-12-13 21:50:49,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:50:49,292 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1015777477] [2022-12-13 21:50:49,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:50:49,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:50:49,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:50:49,753 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:50:49,753 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:50:49,753 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1015777477] [2022-12-13 21:50:49,753 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1015777477] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:50:49,753 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:50:49,753 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-12-13 21:50:49,753 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [509493449] [2022-12-13 21:50:49,753 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:50:49,754 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-12-13 21:50:49,754 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:50:49,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-12-13 21:50:49,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2022-12-13 21:50:49,754 INFO L87 Difference]: Start difference. First operand 1172 states and 1672 transitions. Second operand has 14 states, 14 states have (on average 7.5) internal successors, (105), 14 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:50:57,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 21:50:57,106 INFO L93 Difference]: Finished difference Result 6548 states and 9577 transitions. [2022-12-13 21:50:57,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-12-13 21:50:57,107 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 7.5) internal successors, (105), 14 states have internal predecessors, (105), 0 states have call successors, (0), 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 105 [2022-12-13 21:50:57,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 21:50:57,112 INFO L225 Difference]: With dead ends: 6548 [2022-12-13 21:50:57,112 INFO L226 Difference]: Without dead ends: 6256 [2022-12-13 21:50:57,113 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 151 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=214, Invalid=716, Unknown=0, NotChecked=0, Total=930 [2022-12-13 21:50:57,113 INFO L413 NwaCegarLoop]: 298 mSDtfsCounter, 2000 mSDsluCounter, 2269 mSDsCounter, 0 mSdLazyCounter, 494 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2000 SdHoareTripleChecker+Valid, 2567 SdHoareTripleChecker+Invalid, 499 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 494 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-13 21:50:57,114 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2000 Valid, 2567 Invalid, 499 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 494 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-13 21:50:57,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6256 states. [2022-12-13 21:50:58,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6256 to 1129. [2022-12-13 21:50:58,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1129 states, 1128 states have (on average 1.4335106382978724) internal successors, (1617), 1128 states have internal predecessors, (1617), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:50:58,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1129 states to 1129 states and 1617 transitions. [2022-12-13 21:50:58,224 INFO L78 Accepts]: Start accepts. Automaton has 1129 states and 1617 transitions. Word has length 105 [2022-12-13 21:50:58,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 21:50:58,224 INFO L495 AbstractCegarLoop]: Abstraction has 1129 states and 1617 transitions. [2022-12-13 21:50:58,224 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.5) internal successors, (105), 14 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:50:58,224 INFO L276 IsEmpty]: Start isEmpty. Operand 1129 states and 1617 transitions. [2022-12-13 21:50:58,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2022-12-13 21:50:58,224 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 21:50:58,224 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:50:58,224 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-12-13 21:50:58,224 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 21:50:58,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:50:58,225 INFO L85 PathProgramCache]: Analyzing trace with hash -556328017, now seen corresponding path program 1 times [2022-12-13 21:50:58,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:50:58,225 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1241220245] [2022-12-13 21:50:58,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:50:58,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:50:58,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:50:59,766 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:50:59,766 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:50:59,767 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1241220245] [2022-12-13 21:50:59,767 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1241220245] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:50:59,767 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:50:59,767 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [37] imperfect sequences [] total 37 [2022-12-13 21:50:59,767 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [125095199] [2022-12-13 21:50:59,767 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:50:59,767 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-12-13 21:50:59,767 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:50:59,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-12-13 21:50:59,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=1225, Unknown=0, NotChecked=0, Total=1332 [2022-12-13 21:50:59,769 INFO L87 Difference]: Start difference. First operand 1129 states and 1617 transitions. Second operand has 37 states, 37 states have (on average 2.8378378378378377) internal successors, (105), 37 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:51:20,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 21:51:20,366 INFO L93 Difference]: Finished difference Result 10454 states and 15291 transitions. [2022-12-13 21:51:20,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-12-13 21:51:20,367 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 2.8378378378378377) internal successors, (105), 37 states have internal predecessors, (105), 0 states have call successors, (0), 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 105 [2022-12-13 21:51:20,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 21:51:20,374 INFO L225 Difference]: With dead ends: 10454 [2022-12-13 21:51:20,374 INFO L226 Difference]: Without dead ends: 9437 [2022-12-13 21:51:20,376 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 735 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=762, Invalid=4068, Unknown=0, NotChecked=0, Total=4830 [2022-12-13 21:51:20,377 INFO L413 NwaCegarLoop]: 795 mSDtfsCounter, 2571 mSDsluCounter, 16051 mSDsCounter, 0 mSdLazyCounter, 11208 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2571 SdHoareTripleChecker+Valid, 16846 SdHoareTripleChecker+Invalid, 11232 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 11208 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.9s IncrementalHoareTripleChecker+Time [2022-12-13 21:51:20,377 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2571 Valid, 16846 Invalid, 11232 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [24 Valid, 11208 Invalid, 0 Unknown, 0 Unchecked, 6.9s Time] [2022-12-13 21:51:20,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9437 states. [2022-12-13 21:51:21,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9437 to 1158. [2022-12-13 21:51:21,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1158 states, 1157 states have (on average 1.4278305963699223) internal successors, (1652), 1157 states have internal predecessors, (1652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:51:21,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1158 states to 1158 states and 1652 transitions. [2022-12-13 21:51:21,561 INFO L78 Accepts]: Start accepts. Automaton has 1158 states and 1652 transitions. Word has length 105 [2022-12-13 21:51:21,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 21:51:21,562 INFO L495 AbstractCegarLoop]: Abstraction has 1158 states and 1652 transitions. [2022-12-13 21:51:21,562 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 2.8378378378378377) internal successors, (105), 37 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:51:21,562 INFO L276 IsEmpty]: Start isEmpty. Operand 1158 states and 1652 transitions. [2022-12-13 21:51:21,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2022-12-13 21:51:21,562 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 21:51:21,562 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:51:21,562 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-12-13 21:51:21,562 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 21:51:21,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:51:21,563 INFO L85 PathProgramCache]: Analyzing trace with hash 1003510435, now seen corresponding path program 1 times [2022-12-13 21:51:21,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:51:21,563 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [38510127] [2022-12-13 21:51:21,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:51:21,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:51:21,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:51:22,044 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:51:22,044 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:51:22,044 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [38510127] [2022-12-13 21:51:22,044 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [38510127] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:51:22,044 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:51:22,044 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-12-13 21:51:22,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1312294241] [2022-12-13 21:51:22,044 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:51:22,045 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-12-13 21:51:22,045 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:51:22,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-12-13 21:51:22,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2022-12-13 21:51:22,046 INFO L87 Difference]: Start difference. First operand 1158 states and 1652 transitions. Second operand has 14 states, 14 states have (on average 7.571428571428571) internal successors, (106), 14 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:51:30,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 21:51:30,396 INFO L93 Difference]: Finished difference Result 6543 states and 9568 transitions. [2022-12-13 21:51:30,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-12-13 21:51:30,397 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 7.571428571428571) internal successors, (106), 14 states have internal predecessors, (106), 0 states have call successors, (0), 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 106 [2022-12-13 21:51:30,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 21:51:30,402 INFO L225 Difference]: With dead ends: 6543 [2022-12-13 21:51:30,402 INFO L226 Difference]: Without dead ends: 6252 [2022-12-13 21:51:30,402 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 150 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=214, Invalid=716, Unknown=0, NotChecked=0, Total=930 [2022-12-13 21:51:30,403 INFO L413 NwaCegarLoop]: 494 mSDtfsCounter, 1594 mSDsluCounter, 3217 mSDsCounter, 0 mSdLazyCounter, 604 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1594 SdHoareTripleChecker+Valid, 3711 SdHoareTripleChecker+Invalid, 609 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 604 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-12-13 21:51:30,403 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1594 Valid, 3711 Invalid, 609 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 604 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-12-13 21:51:30,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6252 states. [2022-12-13 21:51:31,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6252 to 1138. [2022-12-13 21:51:31,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1138 states, 1137 states have (on average 1.4309586631486368) internal successors, (1627), 1137 states have internal predecessors, (1627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:51:31,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1138 states to 1138 states and 1627 transitions. [2022-12-13 21:51:31,779 INFO L78 Accepts]: Start accepts. Automaton has 1138 states and 1627 transitions. Word has length 106 [2022-12-13 21:51:31,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 21:51:31,779 INFO L495 AbstractCegarLoop]: Abstraction has 1138 states and 1627 transitions. [2022-12-13 21:51:31,779 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.571428571428571) internal successors, (106), 14 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:51:31,779 INFO L276 IsEmpty]: Start isEmpty. Operand 1138 states and 1627 transitions. [2022-12-13 21:51:31,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2022-12-13 21:51:31,780 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 21:51:31,780 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:51:31,780 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-12-13 21:51:31,780 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 21:51:31,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:51:31,780 INFO L85 PathProgramCache]: Analyzing trace with hash 1296554994, now seen corresponding path program 1 times [2022-12-13 21:51:31,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:51:31,781 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1567232949] [2022-12-13 21:51:31,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:51:31,781 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:51:31,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:51:31,863 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:51:31,863 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:51:31,863 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1567232949] [2022-12-13 21:51:31,863 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1567232949] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:51:31,863 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:51:31,863 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-13 21:51:31,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [673745595] [2022-12-13 21:51:31,863 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:51:31,863 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 21:51:31,863 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:51:31,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 21:51:31,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-13 21:51:31,864 INFO L87 Difference]: Start difference. First operand 1138 states and 1627 transitions. Second operand has 7 states, 7 states have (on average 19.714285714285715) internal successors, (138), 6 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:51:39,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 21:51:39,272 INFO L93 Difference]: Finished difference Result 6488 states and 9493 transitions. [2022-12-13 21:51:39,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-12-13 21:51:39,273 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.714285714285715) internal successors, (138), 6 states have internal predecessors, (138), 0 states have call successors, (0), 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 138 [2022-12-13 21:51:39,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 21:51:39,277 INFO L225 Difference]: With dead ends: 6488 [2022-12-13 21:51:39,277 INFO L226 Difference]: Without dead ends: 5473 [2022-12-13 21:51:39,278 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 [2022-12-13 21:51:39,278 INFO L413 NwaCegarLoop]: 188 mSDtfsCounter, 1397 mSDsluCounter, 358 mSDsCounter, 0 mSdLazyCounter, 437 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1397 SdHoareTripleChecker+Valid, 546 SdHoareTripleChecker+Invalid, 452 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 437 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-12-13 21:51:39,278 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1397 Valid, 546 Invalid, 452 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 437 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-12-13 21:51:39,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5473 states. [2022-12-13 21:51:41,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5473 to 2301. [2022-12-13 21:51:41,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2301 states, 2300 states have (on average 1.4478260869565218) internal successors, (3330), 2300 states have internal predecessors, (3330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:51:41,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2301 states to 2301 states and 3330 transitions. [2022-12-13 21:51:41,923 INFO L78 Accepts]: Start accepts. Automaton has 2301 states and 3330 transitions. Word has length 138 [2022-12-13 21:51:41,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 21:51:41,924 INFO L495 AbstractCegarLoop]: Abstraction has 2301 states and 3330 transitions. [2022-12-13 21:51:41,924 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.714285714285715) internal successors, (138), 6 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:51:41,924 INFO L276 IsEmpty]: Start isEmpty. Operand 2301 states and 3330 transitions. [2022-12-13 21:51:41,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2022-12-13 21:51:41,924 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 21:51:41,925 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:51:41,925 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-12-13 21:51:41,925 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 21:51:41,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:51:41,925 INFO L85 PathProgramCache]: Analyzing trace with hash -37578469, now seen corresponding path program 1 times [2022-12-13 21:51:41,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:51:41,925 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [710322817] [2022-12-13 21:51:41,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:51:41,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:51:41,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:51:42,012 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:51:42,012 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:51:42,012 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [710322817] [2022-12-13 21:51:42,012 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [710322817] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:51:42,012 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:51:42,012 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-13 21:51:42,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1764070470] [2022-12-13 21:51:42,013 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:51:42,013 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 21:51:42,013 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:51:42,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 21:51:42,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-13 21:51:42,013 INFO L87 Difference]: Start difference. First operand 2301 states and 3330 transitions. Second operand has 7 states, 7 states have (on average 19.714285714285715) internal successors, (138), 6 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:51:54,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 21:51:54,122 INFO L93 Difference]: Finished difference Result 11793 states and 17198 transitions. [2022-12-13 21:51:54,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-12-13 21:51:54,123 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.714285714285715) internal successors, (138), 6 states have internal predecessors, (138), 0 states have call successors, (0), 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 138 [2022-12-13 21:51:54,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 21:51:54,130 INFO L225 Difference]: With dead ends: 11793 [2022-12-13 21:51:54,130 INFO L226 Difference]: Without dead ends: 9615 [2022-12-13 21:51:54,132 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 [2022-12-13 21:51:54,132 INFO L413 NwaCegarLoop]: 155 mSDtfsCounter, 1626 mSDsluCounter, 280 mSDsCounter, 0 mSdLazyCounter, 318 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1626 SdHoareTripleChecker+Valid, 435 SdHoareTripleChecker+Invalid, 341 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 318 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-13 21:51:54,132 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1626 Valid, 435 Invalid, 341 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 318 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-13 21:51:54,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9615 states. [2022-12-13 21:51:59,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9615 to 4777. [2022-12-13 21:51:59,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4777 states, 4776 states have (on average 1.454355108877722) internal successors, (6946), 4776 states have internal predecessors, (6946), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:51:59,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4777 states to 4777 states and 6946 transitions. [2022-12-13 21:51:59,542 INFO L78 Accepts]: Start accepts. Automaton has 4777 states and 6946 transitions. Word has length 138 [2022-12-13 21:51:59,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 21:51:59,542 INFO L495 AbstractCegarLoop]: Abstraction has 4777 states and 6946 transitions. [2022-12-13 21:51:59,542 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.714285714285715) internal successors, (138), 6 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:51:59,542 INFO L276 IsEmpty]: Start isEmpty. Operand 4777 states and 6946 transitions. [2022-12-13 21:51:59,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2022-12-13 21:51:59,543 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 21:51:59,543 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:51:59,543 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-12-13 21:51:59,543 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 21:51:59,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:51:59,543 INFO L85 PathProgramCache]: Analyzing trace with hash 471189665, now seen corresponding path program 1 times [2022-12-13 21:51:59,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:51:59,544 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1736577838] [2022-12-13 21:51:59,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:51:59,544 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:51:59,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:51:59,622 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:51:59,622 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:51:59,622 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1736577838] [2022-12-13 21:51:59,622 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1736577838] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:51:59,622 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:51:59,622 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-13 21:51:59,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1604156242] [2022-12-13 21:51:59,622 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:51:59,622 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 21:51:59,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:51:59,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 21:51:59,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-13 21:51:59,623 INFO L87 Difference]: Start difference. First operand 4777 states and 6946 transitions. Second operand has 7 states, 7 states have (on average 19.714285714285715) internal successors, (138), 6 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:52:22,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 21:52:22,713 INFO L93 Difference]: Finished difference Result 23753 states and 34558 transitions. [2022-12-13 21:52:22,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-12-13 21:52:22,714 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.714285714285715) internal successors, (138), 6 states have internal predecessors, (138), 0 states have call successors, (0), 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 138 [2022-12-13 21:52:22,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 21:52:22,730 INFO L225 Difference]: With dead ends: 23753 [2022-12-13 21:52:22,730 INFO L226 Difference]: Without dead ends: 19099 [2022-12-13 21:52:22,735 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 [2022-12-13 21:52:22,735 INFO L413 NwaCegarLoop]: 161 mSDtfsCounter, 1459 mSDsluCounter, 278 mSDsCounter, 0 mSdLazyCounter, 318 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1459 SdHoareTripleChecker+Valid, 439 SdHoareTripleChecker+Invalid, 341 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 318 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-13 21:52:22,736 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1459 Valid, 439 Invalid, 341 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 318 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-13 21:52:22,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19099 states. [2022-12-13 21:52:34,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19099 to 10029. [2022-12-13 21:52:34,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10029 states, 10028 states have (on average 1.4557239728759475) internal successors, (14598), 10028 states have internal predecessors, (14598), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:52:34,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10029 states to 10029 states and 14598 transitions. [2022-12-13 21:52:34,256 INFO L78 Accepts]: Start accepts. Automaton has 10029 states and 14598 transitions. Word has length 138 [2022-12-13 21:52:34,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 21:52:34,256 INFO L495 AbstractCegarLoop]: Abstraction has 10029 states and 14598 transitions. [2022-12-13 21:52:34,257 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.714285714285715) internal successors, (138), 6 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:52:34,257 INFO L276 IsEmpty]: Start isEmpty. Operand 10029 states and 14598 transitions. [2022-12-13 21:52:34,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2022-12-13 21:52:34,258 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 21:52:34,258 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:52:34,259 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-12-13 21:52:34,259 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 21:52:34,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:52:34,259 INFO L85 PathProgramCache]: Analyzing trace with hash -1142509291, now seen corresponding path program 1 times [2022-12-13 21:52:34,259 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:52:34,259 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1318089323] [2022-12-13 21:52:34,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:52:34,260 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:52:34,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:52:34,368 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:52:34,368 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:52:34,368 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1318089323] [2022-12-13 21:52:34,368 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1318089323] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:52:34,369 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:52:34,369 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-13 21:52:34,369 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [11786600] [2022-12-13 21:52:34,369 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:52:34,369 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 21:52:34,369 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:52:34,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 21:52:34,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-13 21:52:34,369 INFO L87 Difference]: Start difference. First operand 10029 states and 14598 transitions. Second operand has 7 states, 7 states have (on average 19.714285714285715) internal successors, (138), 6 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:53:15,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 21:53:15,765 INFO L93 Difference]: Finished difference Result 44909 states and 65434 transitions. [2022-12-13 21:53:15,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-12-13 21:53:15,766 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.714285714285715) internal successors, (138), 6 states have internal predecessors, (138), 0 states have call successors, (0), 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 138 [2022-12-13 21:53:15,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 21:53:15,802 INFO L225 Difference]: With dead ends: 44909 [2022-12-13 21:53:15,802 INFO L226 Difference]: Without dead ends: 35003 [2022-12-13 21:53:15,812 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 [2022-12-13 21:53:15,813 INFO L413 NwaCegarLoop]: 147 mSDtfsCounter, 1801 mSDsluCounter, 282 mSDsCounter, 0 mSdLazyCounter, 318 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1801 SdHoareTripleChecker+Valid, 429 SdHoareTripleChecker+Invalid, 341 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 318 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-13 21:53:15,813 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1801 Valid, 429 Invalid, 341 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 318 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-13 21:53:15,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35003 states. [2022-12-13 21:53:39,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35003 to 21133. [2022-12-13 21:53:39,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21133 states, 21132 states have (on average 1.4547605527162597) internal successors, (30742), 21132 states have internal predecessors, (30742), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:53:39,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21133 states to 21133 states and 30742 transitions. [2022-12-13 21:53:39,753 INFO L78 Accepts]: Start accepts. Automaton has 21133 states and 30742 transitions. Word has length 138 [2022-12-13 21:53:39,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 21:53:39,753 INFO L495 AbstractCegarLoop]: Abstraction has 21133 states and 30742 transitions. [2022-12-13 21:53:39,753 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.714285714285715) internal successors, (138), 6 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:53:39,753 INFO L276 IsEmpty]: Start isEmpty. Operand 21133 states and 30742 transitions. [2022-12-13 21:53:39,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2022-12-13 21:53:39,754 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 21:53:39,754 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:53:39,755 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2022-12-13 21:53:39,755 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 21:53:39,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:53:39,755 INFO L85 PathProgramCache]: Analyzing trace with hash -1082912625, now seen corresponding path program 1 times [2022-12-13 21:53:39,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:53:39,755 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [639164880] [2022-12-13 21:53:39,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:53:39,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:53:39,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:53:39,834 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:53:39,835 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:53:39,835 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [639164880] [2022-12-13 21:53:39,835 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [639164880] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:53:39,835 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:53:39,835 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-13 21:53:39,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1486488819] [2022-12-13 21:53:39,835 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:53:39,835 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 21:53:39,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:53:39,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 21:53:39,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-13 21:53:39,836 INFO L87 Difference]: Start difference. First operand 21133 states and 30742 transitions. Second operand has 7 states, 7 states have (on average 19.714285714285715) internal successors, (138), 6 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:55:08,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 21:55:08,867 INFO L93 Difference]: Finished difference Result 98085 states and 142730 transitions. [2022-12-13 21:55:08,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-12-13 21:55:08,868 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.714285714285715) internal successors, (138), 6 states have internal predecessors, (138), 0 states have call successors, (0), 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 138 [2022-12-13 21:55:08,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 21:55:08,960 INFO L225 Difference]: With dead ends: 98085 [2022-12-13 21:55:08,960 INFO L226 Difference]: Without dead ends: 77075 [2022-12-13 21:55:08,985 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2022-12-13 21:55:08,985 INFO L413 NwaCegarLoop]: 140 mSDtfsCounter, 1969 mSDsluCounter, 285 mSDsCounter, 0 mSdLazyCounter, 318 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1969 SdHoareTripleChecker+Valid, 425 SdHoareTripleChecker+Invalid, 341 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 318 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-13 21:55:08,985 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1969 Valid, 425 Invalid, 341 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 318 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-13 21:55:09,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77075 states. [2022-12-13 21:55:59,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77075 to 44541. [2022-12-13 21:55:59,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44541 states, 44540 states have (on average 1.4528513695554557) internal successors, (64710), 44540 states have internal predecessors, (64710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:55:59,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44541 states to 44541 states and 64710 transitions. [2022-12-13 21:55:59,608 INFO L78 Accepts]: Start accepts. Automaton has 44541 states and 64710 transitions. Word has length 138 [2022-12-13 21:55:59,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 21:55:59,608 INFO L495 AbstractCegarLoop]: Abstraction has 44541 states and 64710 transitions. [2022-12-13 21:55:59,608 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.714285714285715) internal successors, (138), 6 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:55:59,608 INFO L276 IsEmpty]: Start isEmpty. Operand 44541 states and 64710 transitions. [2022-12-13 21:55:59,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2022-12-13 21:55:59,610 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 21:55:59,610 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:55:59,610 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2022-12-13 21:55:59,610 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 21:55:59,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:55:59,610 INFO L85 PathProgramCache]: Analyzing trace with hash 1508539107, now seen corresponding path program 1 times [2022-12-13 21:55:59,610 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:55:59,611 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1988480127] [2022-12-13 21:55:59,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:55:59,611 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:55:59,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:55:59,650 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:55:59,650 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:55:59,650 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1988480127] [2022-12-13 21:55:59,650 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1988480127] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:55:59,650 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:55:59,650 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 21:55:59,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1110907879] [2022-12-13 21:55:59,651 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:55:59,651 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 21:55:59,651 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:55:59,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 21:55:59,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 21:55:59,651 INFO L87 Difference]: Start difference. First operand 44541 states and 64710 transitions. Second operand has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 3 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:56:52,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 21:56:52,410 INFO L93 Difference]: Finished difference Result 90497 states and 131528 transitions. [2022-12-13 21:56:52,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 21:56:52,410 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 3 states have internal predecessors, (139), 0 states have call successors, (0), 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 139 [2022-12-13 21:56:52,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 21:56:52,464 INFO L225 Difference]: With dead ends: 90497 [2022-12-13 21:56:52,464 INFO L226 Difference]: Without dead ends: 46079 [2022-12-13 21:56:52,488 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 21:56:52,489 INFO L413 NwaCegarLoop]: 208 mSDtfsCounter, 158 mSDsluCounter, 131 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 158 SdHoareTripleChecker+Valid, 339 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 21:56:52,489 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [158 Valid, 339 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 21:56:52,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46079 states. [2022-12-13 21:57:46,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46079 to 46029. [2022-12-13 21:57:46,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46029 states, 46028 states have (on average 1.4430781263578691) internal successors, (66422), 46028 states have internal predecessors, (66422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:57:46,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46029 states to 46029 states and 66422 transitions. [2022-12-13 21:57:46,236 INFO L78 Accepts]: Start accepts. Automaton has 46029 states and 66422 transitions. Word has length 139 [2022-12-13 21:57:46,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 21:57:46,237 INFO L495 AbstractCegarLoop]: Abstraction has 46029 states and 66422 transitions. [2022-12-13 21:57:46,237 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 3 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:57:46,237 INFO L276 IsEmpty]: Start isEmpty. Operand 46029 states and 66422 transitions. [2022-12-13 21:57:46,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2022-12-13 21:57:46,238 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 21:57:46,239 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:57:46,239 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2022-12-13 21:57:46,239 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 21:57:46,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:57:46,239 INFO L85 PathProgramCache]: Analyzing trace with hash -1869468745, now seen corresponding path program 1 times [2022-12-13 21:57:46,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:57:46,239 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1904851748] [2022-12-13 21:57:46,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:57:46,239 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:57:46,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:57:46,322 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:57:46,322 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:57:46,322 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1904851748] [2022-12-13 21:57:46,322 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1904851748] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:57:46,322 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:57:46,322 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-13 21:57:46,323 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1899102816] [2022-12-13 21:57:46,323 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:57:46,323 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 21:57:46,323 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:57:46,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 21:57:46,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-13 21:57:46,323 INFO L87 Difference]: Start difference. First operand 46029 states and 66422 transitions. Second operand has 7 states, 7 states have (on average 19.857142857142858) internal successors, (139), 6 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:59:41,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 21:59:41,591 INFO L93 Difference]: Finished difference Result 141557 states and 203226 transitions. [2022-12-13 21:59:41,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-12-13 21:59:41,592 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.857142857142858) internal successors, (139), 6 states have internal predecessors, (139), 0 states have call successors, (0), 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 139 [2022-12-13 21:59:41,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 21:59:41,712 INFO L225 Difference]: With dead ends: 141557 [2022-12-13 21:59:41,712 INFO L226 Difference]: Without dead ends: 95651 [2022-12-13 21:59:41,749 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2022-12-13 21:59:41,749 INFO L413 NwaCegarLoop]: 123 mSDtfsCounter, 1491 mSDsluCounter, 235 mSDsCounter, 0 mSdLazyCounter, 251 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1491 SdHoareTripleChecker+Valid, 358 SdHoareTripleChecker+Invalid, 267 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 251 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-13 21:59:41,749 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1491 Valid, 358 Invalid, 267 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 251 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-13 21:59:41,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95651 states. [2022-12-13 22:00:42,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95651 to 52205. [2022-12-13 22:00:42,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52205 states, 52204 states have (on average 1.4203892422036626) internal successors, (74150), 52204 states have internal predecessors, (74150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:00:42,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52205 states to 52205 states and 74150 transitions. [2022-12-13 22:00:42,354 INFO L78 Accepts]: Start accepts. Automaton has 52205 states and 74150 transitions. Word has length 139 [2022-12-13 22:00:42,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 22:00:42,354 INFO L495 AbstractCegarLoop]: Abstraction has 52205 states and 74150 transitions. [2022-12-13 22:00:42,354 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.857142857142858) internal successors, (139), 6 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:00:42,354 INFO L276 IsEmpty]: Start isEmpty. Operand 52205 states and 74150 transitions. [2022-12-13 22:00:42,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2022-12-13 22:00:42,365 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 22:00:42,365 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 22:00:42,365 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2022-12-13 22:00:42,365 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 22:00:42,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 22:00:42,366 INFO L85 PathProgramCache]: Analyzing trace with hash -25932593, now seen corresponding path program 1 times [2022-12-13 22:00:42,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 22:00:42,366 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [537033254] [2022-12-13 22:00:42,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:00:42,366 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 22:00:42,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:00:42,447 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-12-13 22:00:42,447 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 22:00:42,447 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [537033254] [2022-12-13 22:00:42,448 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [537033254] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 22:00:42,448 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 22:00:42,448 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 22:00:42,448 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1301082820] [2022-12-13 22:00:42,448 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 22:00:42,448 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 22:00:42,448 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 22:00:42,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 22:00:42,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 22:00:42,449 INFO L87 Difference]: Start difference. First operand 52205 states and 74150 transitions. Second operand has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 3 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:01:39,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 22:01:39,690 INFO L93 Difference]: Finished difference Result 101313 states and 143704 transitions. [2022-12-13 22:01:39,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 22:01:39,691 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 3 states have internal predecessors, (148), 0 states have call successors, (0), 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 169 [2022-12-13 22:01:39,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 22:01:39,752 INFO L225 Difference]: With dead ends: 101313 [2022-12-13 22:01:39,752 INFO L226 Difference]: Without dead ends: 49231 [2022-12-13 22:01:39,778 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 22:01:39,778 INFO L413 NwaCegarLoop]: 265 mSDtfsCounter, 90 mSDsluCounter, 177 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 442 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 [2022-12-13 22:01:39,778 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [90 Valid, 442 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 22:01:39,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49231 states. [2022-12-13 22:02:27,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49231 to 41981. [2022-12-13 22:02:27,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41981 states, 41980 states have (on average 1.4221057646498332) internal successors, (59700), 41980 states have internal predecessors, (59700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:02:27,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41981 states to 41981 states and 59700 transitions. [2022-12-13 22:02:27,953 INFO L78 Accepts]: Start accepts. Automaton has 41981 states and 59700 transitions. Word has length 169 [2022-12-13 22:02:27,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 22:02:27,954 INFO L495 AbstractCegarLoop]: Abstraction has 41981 states and 59700 transitions. [2022-12-13 22:02:27,954 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 3 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:02:27,954 INFO L276 IsEmpty]: Start isEmpty. Operand 41981 states and 59700 transitions. [2022-12-13 22:02:27,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2022-12-13 22:02:27,962 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 22:02:27,962 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 22:02:27,962 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2022-12-13 22:02:27,962 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 22:02:27,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 22:02:27,962 INFO L85 PathProgramCache]: Analyzing trace with hash 2135931939, now seen corresponding path program 1 times [2022-12-13 22:02:27,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 22:02:27,962 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [782810188] [2022-12-13 22:02:27,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:02:27,963 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 22:02:27,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:02:28,040 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-12-13 22:02:28,040 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 22:02:28,040 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [782810188] [2022-12-13 22:02:28,040 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [782810188] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 22:02:28,040 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 22:02:28,040 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 22:02:28,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1726079581] [2022-12-13 22:02:28,040 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 22:02:28,041 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 22:02:28,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 22:02:28,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 22:02:28,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 22:02:28,041 INFO L87 Difference]: Start difference. First operand 41981 states and 59700 transitions. Second operand has 3 states, 3 states have (on average 50.666666666666664) internal successors, (152), 3 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:03:14,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 22:03:14,963 INFO L93 Difference]: Finished difference Result 81402 states and 115534 transitions. [2022-12-13 22:03:14,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 22:03:14,964 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.666666666666664) internal successors, (152), 3 states have internal predecessors, (152), 0 states have call successors, (0), 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 170 [2022-12-13 22:03:14,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 22:03:15,008 INFO L225 Difference]: With dead ends: 81402 [2022-12-13 22:03:15,009 INFO L226 Difference]: Without dead ends: 39544 [2022-12-13 22:03:15,031 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 22:03:15,031 INFO L413 NwaCegarLoop]: 260 mSDtfsCounter, 83 mSDsluCounter, 183 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 443 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 [2022-12-13 22:03:15,031 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [83 Valid, 443 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 22:03:15,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39544 states.