./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/pals_lcr.5.ufo.UNBOUNDED.pals+Problem12_label05.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e04fb08f 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_c6f5715d-83eb-45a0-99b9-f38c109ab376/bin/uautomizer-tPACEb0tL8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6f5715d-83eb-45a0-99b9-f38c109ab376/bin/uautomizer-tPACEb0tL8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6f5715d-83eb-45a0-99b9-f38c109ab376/bin/uautomizer-tPACEb0tL8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6f5715d-83eb-45a0-99b9-f38c109ab376/bin/uautomizer-tPACEb0tL8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/pals_lcr.5.ufo.UNBOUNDED.pals+Problem12_label05.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6f5715d-83eb-45a0-99b9-f38c109ab376/bin/uautomizer-tPACEb0tL8/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6f5715d-83eb-45a0-99b9-f38c109ab376/bin/uautomizer-tPACEb0tL8 --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 77efdc70644c4d76b2b51ad31e4c72e04d88f3f8d138a44eb5f8e2813c15326a --- 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-e04fb08 [2022-11-16 11:44:38,932 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 11:44:38,934 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 11:44:38,959 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 11:44:38,964 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 11:44:38,971 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 11:44:38,975 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 11:44:38,977 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 11:44:38,980 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 11:44:38,983 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 11:44:38,985 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 11:44:38,986 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 11:44:38,987 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 11:44:38,994 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 11:44:38,996 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 11:44:38,998 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 11:44:39,000 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 11:44:39,001 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 11:44:39,003 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 11:44:39,005 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 11:44:39,009 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 11:44:39,011 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 11:44:39,012 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 11:44:39,013 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 11:44:39,017 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 11:44:39,017 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 11:44:39,018 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 11:44:39,018 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 11:44:39,019 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 11:44:39,020 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 11:44:39,020 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 11:44:39,021 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 11:44:39,022 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 11:44:39,022 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 11:44:39,023 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 11:44:39,024 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 11:44:39,025 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 11:44:39,025 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 11:44:39,025 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 11:44:39,026 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 11:44:39,027 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 11:44:39,028 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6f5715d-83eb-45a0-99b9-f38c109ab376/bin/uautomizer-tPACEb0tL8/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-16 11:44:39,063 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 11:44:39,063 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 11:44:39,064 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 11:44:39,064 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 11:44:39,065 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 11:44:39,065 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 11:44:39,066 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 11:44:39,066 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 11:44:39,066 INFO L138 SettingsManager]: * Use SBE=true [2022-11-16 11:44:39,067 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 11:44:39,068 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 11:44:39,068 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 11:44:39,068 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 11:44:39,068 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 11:44:39,069 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 11:44:39,069 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 11:44:39,069 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 11:44:39,069 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 11:44:39,070 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 11:44:39,070 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 11:44:39,070 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 11:44:39,070 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 11:44:39,070 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 11:44:39,071 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 11:44:39,071 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 11:44:39,071 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 11:44:39,073 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 11:44:39,073 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 11:44:39,073 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-16 11:44:39,073 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 11:44:39,074 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-16 11:44:39,074 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-16 11:44:39,074 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 11:44:39,074 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6f5715d-83eb-45a0-99b9-f38c109ab376/bin/uautomizer-tPACEb0tL8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6f5715d-83eb-45a0-99b9-f38c109ab376/bin/uautomizer-tPACEb0tL8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 77efdc70644c4d76b2b51ad31e4c72e04d88f3f8d138a44eb5f8e2813c15326a [2022-11-16 11:44:39,415 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 11:44:39,452 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 11:44:39,454 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 11:44:39,456 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 11:44:39,457 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 11:44:39,458 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6f5715d-83eb-45a0-99b9-f38c109ab376/bin/uautomizer-tPACEb0tL8/../../sv-benchmarks/c/combinations/pals_lcr.5.ufo.UNBOUNDED.pals+Problem12_label05.c [2022-11-16 11:44:39,523 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6f5715d-83eb-45a0-99b9-f38c109ab376/bin/uautomizer-tPACEb0tL8/data/2ad12316a/0ae349c79ecd42618ca3e4bcdcb21c5c/FLAG19f02ddf1 [2022-11-16 11:44:40,437 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 11:44:40,438 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6f5715d-83eb-45a0-99b9-f38c109ab376/sv-benchmarks/c/combinations/pals_lcr.5.ufo.UNBOUNDED.pals+Problem12_label05.c [2022-11-16 11:44:40,467 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6f5715d-83eb-45a0-99b9-f38c109ab376/bin/uautomizer-tPACEb0tL8/data/2ad12316a/0ae349c79ecd42618ca3e4bcdcb21c5c/FLAG19f02ddf1 [2022-11-16 11:44:40,926 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6f5715d-83eb-45a0-99b9-f38c109ab376/bin/uautomizer-tPACEb0tL8/data/2ad12316a/0ae349c79ecd42618ca3e4bcdcb21c5c [2022-11-16 11:44:40,929 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 11:44:40,931 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 11:44:40,933 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 11:44:40,934 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 11:44:40,938 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 11:44:40,939 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:44:40" (1/1) ... [2022-11-16 11:44:40,940 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6e5cc02f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:44:40, skipping insertion in model container [2022-11-16 11:44:40,940 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:44:40" (1/1) ... [2022-11-16 11:44:40,947 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 11:44:41,107 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 11:44:41,449 WARN L229 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_c6f5715d-83eb-45a0-99b9-f38c109ab376/sv-benchmarks/c/combinations/pals_lcr.5.ufo.UNBOUNDED.pals+Problem12_label05.c[11668,11681] [2022-11-16 11:44:41,512 WARN L229 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_c6f5715d-83eb-45a0-99b9-f38c109ab376/sv-benchmarks/c/combinations/pals_lcr.5.ufo.UNBOUNDED.pals+Problem12_label05.c[18604,18617] [2022-11-16 11:44:42,455 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 11:44:42,482 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 11:44:42,525 WARN L229 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_c6f5715d-83eb-45a0-99b9-f38c109ab376/sv-benchmarks/c/combinations/pals_lcr.5.ufo.UNBOUNDED.pals+Problem12_label05.c[11668,11681] [2022-11-16 11:44:42,536 WARN L229 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_c6f5715d-83eb-45a0-99b9-f38c109ab376/sv-benchmarks/c/combinations/pals_lcr.5.ufo.UNBOUNDED.pals+Problem12_label05.c[18604,18617] [2022-11-16 11:44:43,092 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 11:44:43,120 INFO L208 MainTranslator]: Completed translation [2022-11-16 11:44:43,121 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:44:43 WrapperNode [2022-11-16 11:44:43,121 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 11:44:43,122 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 11:44:43,122 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 11:44:43,122 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 11:44:43,130 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:44:43" (1/1) ... [2022-11-16 11:44:43,187 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:44:43" (1/1) ... [2022-11-16 11:44:43,601 INFO L138 Inliner]: procedures = 37, calls = 22, calls flagged for inlining = 17, calls inlined = 17, statements flattened = 5068 [2022-11-16 11:44:43,601 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 11:44:43,602 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 11:44:43,603 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 11:44:43,603 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 11:44:43,613 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:44:43" (1/1) ... [2022-11-16 11:44:43,613 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:44:43" (1/1) ... [2022-11-16 11:44:43,761 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:44:43" (1/1) ... [2022-11-16 11:44:43,761 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:44:43" (1/1) ... [2022-11-16 11:44:43,874 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:44:43" (1/1) ... [2022-11-16 11:44:43,897 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:44:43" (1/1) ... [2022-11-16 11:44:43,913 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:44:43" (1/1) ... [2022-11-16 11:44:43,934 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:44:43" (1/1) ... [2022-11-16 11:44:43,986 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 11:44:43,988 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 11:44:43,988 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 11:44:43,989 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 11:44:43,992 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:44:43" (1/1) ... [2022-11-16 11:44:43,998 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 11:44:44,016 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6f5715d-83eb-45a0-99b9-f38c109ab376/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:44:44,031 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6f5715d-83eb-45a0-99b9-f38c109ab376/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 11:44:44,045 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6f5715d-83eb-45a0-99b9-f38c109ab376/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 11:44:44,091 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 11:44:44,091 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-16 11:44:44,092 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 11:44:44,092 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 11:44:44,227 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 11:44:44,243 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 11:44:49,528 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 11:44:49,548 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 11:44:49,548 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-16 11:44:49,552 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:44:49 BoogieIcfgContainer [2022-11-16 11:44:49,552 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 11:44:49,556 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 11:44:49,557 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 11:44:49,560 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 11:44:49,560 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 11:44:40" (1/3) ... [2022-11-16 11:44:49,561 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b3e94eb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 11:44:49, skipping insertion in model container [2022-11-16 11:44:49,562 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:44:43" (2/3) ... [2022-11-16 11:44:49,562 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b3e94eb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 11:44:49, skipping insertion in model container [2022-11-16 11:44:49,562 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:44:49" (3/3) ... [2022-11-16 11:44:49,564 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr.5.ufo.UNBOUNDED.pals+Problem12_label05.c [2022-11-16 11:44:49,583 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 11:44:49,583 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-16 11:44:49,692 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 11:44:49,706 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;@65e21e4d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 11:44:49,706 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-11-16 11:44:49,720 INFO L276 IsEmpty]: Start isEmpty. Operand has 901 states, 898 states have (on average 1.9042316258351892) internal successors, (1710), 900 states have internal predecessors, (1710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:44:49,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-11-16 11:44:49,732 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:44:49,732 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] [2022-11-16 11:44:49,733 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:44:49,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:44:49,741 INFO L85 PathProgramCache]: Analyzing trace with hash 372784668, now seen corresponding path program 1 times [2022-11-16 11:44:49,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:44:49,753 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [987436428] [2022-11-16 11:44:49,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:44:49,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:44:49,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:44:50,062 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:44:50,063 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:44:50,064 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [987436428] [2022-11-16 11:44:50,065 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [987436428] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:44:50,065 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:44:50,065 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 11:44:50,067 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [244528671] [2022-11-16 11:44:50,070 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:44:50,075 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-16 11:44:50,077 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:44:50,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-16 11:44:50,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-16 11:44:50,118 INFO L87 Difference]: Start difference. First operand has 901 states, 898 states have (on average 1.9042316258351892) internal successors, (1710), 900 states have internal predecessors, (1710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 12.0) internal successors, (24), 2 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:44:50,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:44:50,229 INFO L93 Difference]: Finished difference Result 1763 states and 3348 transitions. [2022-11-16 11:44:50,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-16 11:44:50,232 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 12.0) internal successors, (24), 2 states have internal predecessors, (24), 0 states have call successors, (0), 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 24 [2022-11-16 11:44:50,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:44:50,257 INFO L225 Difference]: With dead ends: 1763 [2022-11-16 11:44:50,257 INFO L226 Difference]: Without dead ends: 835 [2022-11-16 11:44:50,266 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-16 11:44:50,270 INFO L413 NwaCegarLoop]: 1641 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1641 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 11:44:50,271 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1641 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 11:44:50,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 835 states. [2022-11-16 11:44:50,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 835 to 835. [2022-11-16 11:44:50,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 835 states, 833 states have (on average 1.893157262905162) internal successors, (1577), 834 states have internal predecessors, (1577), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:44:50,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 835 states to 835 states and 1577 transitions. [2022-11-16 11:44:50,349 INFO L78 Accepts]: Start accepts. Automaton has 835 states and 1577 transitions. Word has length 24 [2022-11-16 11:44:50,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:44:50,349 INFO L495 AbstractCegarLoop]: Abstraction has 835 states and 1577 transitions. [2022-11-16 11:44:50,350 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 12.0) internal successors, (24), 2 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:44:50,350 INFO L276 IsEmpty]: Start isEmpty. Operand 835 states and 1577 transitions. [2022-11-16 11:44:50,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-11-16 11:44:50,351 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:44:50,351 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] [2022-11-16 11:44:50,352 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-16 11:44:50,352 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:44:50,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:44:50,353 INFO L85 PathProgramCache]: Analyzing trace with hash -1621360038, now seen corresponding path program 1 times [2022-11-16 11:44:50,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:44:50,353 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1626592425] [2022-11-16 11:44:50,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:44:50,354 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:44:50,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:44:50,567 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:44:50,568 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:44:50,568 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1626592425] [2022-11-16 11:44:50,568 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1626592425] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:44:50,568 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:44:50,568 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 11:44:50,569 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1002972927] [2022-11-16 11:44:50,569 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:44:50,570 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 11:44:50,570 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:44:50,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 11:44:50,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:44:50,571 INFO L87 Difference]: Start difference. First operand 835 states and 1577 transitions. Second operand has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:44:50,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:44:50,752 INFO L93 Difference]: Finished difference Result 883 states and 1651 transitions. [2022-11-16 11:44:50,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 11:44:50,752 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 0 states have call successors, (0), 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 24 [2022-11-16 11:44:50,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:44:50,756 INFO L225 Difference]: With dead ends: 883 [2022-11-16 11:44:50,756 INFO L226 Difference]: Without dead ends: 835 [2022-11-16 11:44:50,759 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-16 11:44:50,761 INFO L413 NwaCegarLoop]: 1575 mSDtfsCounter, 3 mSDsluCounter, 4691 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 6266 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 11:44:50,761 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 6266 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 11:44:50,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 835 states. [2022-11-16 11:44:50,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 835 to 835. [2022-11-16 11:44:50,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 835 states, 833 states have (on average 1.8559423769507803) internal successors, (1546), 834 states have internal predecessors, (1546), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:44:50,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 835 states to 835 states and 1546 transitions. [2022-11-16 11:44:50,801 INFO L78 Accepts]: Start accepts. Automaton has 835 states and 1546 transitions. Word has length 24 [2022-11-16 11:44:50,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:44:50,801 INFO L495 AbstractCegarLoop]: Abstraction has 835 states and 1546 transitions. [2022-11-16 11:44:50,802 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:44:50,802 INFO L276 IsEmpty]: Start isEmpty. Operand 835 states and 1546 transitions. [2022-11-16 11:44:50,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-11-16 11:44:50,813 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:44:50,813 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] [2022-11-16 11:44:50,813 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-16 11:44:50,814 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:44:50,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:44:50,820 INFO L85 PathProgramCache]: Analyzing trace with hash 653480561, now seen corresponding path program 1 times [2022-11-16 11:44:50,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:44:50,820 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [993922622] [2022-11-16 11:44:50,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:44:50,820 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:44:50,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:44:51,184 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:44:51,185 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:44:51,185 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [993922622] [2022-11-16 11:44:51,187 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [993922622] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:44:51,187 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:44:51,187 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 11:44:51,187 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1191049201] [2022-11-16 11:44:51,187 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:44:51,189 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 11:44:51,189 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:44:51,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 11:44:51,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-16 11:44:51,191 INFO L87 Difference]: Start difference. First operand 835 states and 1546 transitions. Second operand has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:44:51,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:44:51,591 INFO L93 Difference]: Finished difference Result 1275 states and 2246 transitions. [2022-11-16 11:44:51,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-16 11:44:51,592 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 0 states have call successors, (0), 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 54 [2022-11-16 11:44:51,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:44:51,600 INFO L225 Difference]: With dead ends: 1275 [2022-11-16 11:44:51,600 INFO L226 Difference]: Without dead ends: 1231 [2022-11-16 11:44:51,605 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2022-11-16 11:44:51,610 INFO L413 NwaCegarLoop]: 1540 mSDtfsCounter, 7979 mSDsluCounter, 1156 mSDsCounter, 0 mSdLazyCounter, 132 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7979 SdHoareTripleChecker+Valid, 2696 SdHoareTripleChecker+Invalid, 142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 132 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-16 11:44:51,612 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7979 Valid, 2696 Invalid, 142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 132 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-16 11:44:51,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1231 states. [2022-11-16 11:44:51,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1231 to 877. [2022-11-16 11:44:51,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 877 states, 875 states have (on average 1.8434285714285714) internal successors, (1613), 876 states have internal predecessors, (1613), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:44:51,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 877 states to 877 states and 1613 transitions. [2022-11-16 11:44:51,649 INFO L78 Accepts]: Start accepts. Automaton has 877 states and 1613 transitions. Word has length 54 [2022-11-16 11:44:51,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:44:51,650 INFO L495 AbstractCegarLoop]: Abstraction has 877 states and 1613 transitions. [2022-11-16 11:44:51,650 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:44:51,650 INFO L276 IsEmpty]: Start isEmpty. Operand 877 states and 1613 transitions. [2022-11-16 11:44:51,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-11-16 11:44:51,654 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:44:51,655 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] [2022-11-16 11:44:51,655 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-16 11:44:51,655 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:44:51,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:44:51,657 INFO L85 PathProgramCache]: Analyzing trace with hash -486102655, now seen corresponding path program 1 times [2022-11-16 11:44:51,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:44:51,657 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [777310622] [2022-11-16 11:44:51,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:44:51,658 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:44:51,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:44:51,800 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:44:51,800 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:44:51,800 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [777310622] [2022-11-16 11:44:51,801 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [777310622] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:44:51,801 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:44:51,801 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:44:51,801 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [863280550] [2022-11-16 11:44:51,802 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:44:51,802 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:44:51,802 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:44:51,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:44:51,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:44:51,803 INFO L87 Difference]: Start difference. First operand 877 states and 1613 transitions. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:44:51,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:44:51,864 INFO L93 Difference]: Finished difference Result 1038 states and 1868 transitions. [2022-11-16 11:44:51,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:44:51,865 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 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 56 [2022-11-16 11:44:51,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:44:51,870 INFO L225 Difference]: With dead ends: 1038 [2022-11-16 11:44:51,870 INFO L226 Difference]: Without dead ends: 952 [2022-11-16 11:44:51,871 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:44:51,872 INFO L413 NwaCegarLoop]: 1542 mSDtfsCounter, 1484 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1484 SdHoareTripleChecker+Valid, 1605 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 11:44:51,873 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1484 Valid, 1605 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 11:44:51,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 952 states. [2022-11-16 11:44:51,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 952 to 948. [2022-11-16 11:44:51,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 948 states, 946 states have (on average 1.8213530655391121) internal successors, (1723), 947 states have internal predecessors, (1723), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:44:51,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 948 states to 948 states and 1723 transitions. [2022-11-16 11:44:51,910 INFO L78 Accepts]: Start accepts. Automaton has 948 states and 1723 transitions. Word has length 56 [2022-11-16 11:44:51,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:44:51,911 INFO L495 AbstractCegarLoop]: Abstraction has 948 states and 1723 transitions. [2022-11-16 11:44:51,911 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:44:51,911 INFO L276 IsEmpty]: Start isEmpty. Operand 948 states and 1723 transitions. [2022-11-16 11:44:51,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-11-16 11:44:51,912 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:44:51,913 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] [2022-11-16 11:44:51,913 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-16 11:44:51,913 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:44:51,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:44:51,914 INFO L85 PathProgramCache]: Analyzing trace with hash -419609143, now seen corresponding path program 1 times [2022-11-16 11:44:51,914 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:44:51,914 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1517151999] [2022-11-16 11:44:51,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:44:51,915 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:44:51,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:44:52,211 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:44:52,211 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:44:52,212 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1517151999] [2022-11-16 11:44:52,212 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1517151999] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:44:52,212 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:44:52,212 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 11:44:52,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1079127622] [2022-11-16 11:44:52,213 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:44:52,213 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 11:44:52,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:44:52,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 11:44:52,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-11-16 11:44:52,214 INFO L87 Difference]: Start difference. First operand 948 states and 1723 transitions. Second operand has 7 states, 7 states have (on average 8.0) internal successors, (56), 7 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:44:52,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:44:52,458 INFO L93 Difference]: Finished difference Result 1107 states and 1971 transitions. [2022-11-16 11:44:52,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 11:44:52,459 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.0) internal successors, (56), 7 states have internal predecessors, (56), 0 states have call successors, (0), 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 56 [2022-11-16 11:44:52,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:44:52,463 INFO L225 Difference]: With dead ends: 1107 [2022-11-16 11:44:52,463 INFO L226 Difference]: Without dead ends: 950 [2022-11-16 11:44:52,464 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2022-11-16 11:44:52,465 INFO L413 NwaCegarLoop]: 1539 mSDtfsCounter, 6096 mSDsluCounter, 265 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6096 SdHoareTripleChecker+Valid, 1804 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 11:44:52,465 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6096 Valid, 1804 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 11:44:52,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 950 states. [2022-11-16 11:44:52,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 950 to 948. [2022-11-16 11:44:52,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 948 states, 946 states have (on average 1.8192389006342495) internal successors, (1721), 947 states have internal predecessors, (1721), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:44:52,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 948 states to 948 states and 1721 transitions. [2022-11-16 11:44:52,495 INFO L78 Accepts]: Start accepts. Automaton has 948 states and 1721 transitions. Word has length 56 [2022-11-16 11:44:52,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:44:52,496 INFO L495 AbstractCegarLoop]: Abstraction has 948 states and 1721 transitions. [2022-11-16 11:44:52,496 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.0) internal successors, (56), 7 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:44:52,496 INFO L276 IsEmpty]: Start isEmpty. Operand 948 states and 1721 transitions. [2022-11-16 11:44:52,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-11-16 11:44:52,497 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:44:52,497 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] [2022-11-16 11:44:52,497 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-16 11:44:52,497 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:44:52,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:44:52,498 INFO L85 PathProgramCache]: Analyzing trace with hash -537704617, now seen corresponding path program 1 times [2022-11-16 11:44:52,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:44:52,498 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2117188002] [2022-11-16 11:44:52,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:44:52,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:44:52,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:44:52,822 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:44:52,823 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:44:52,823 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2117188002] [2022-11-16 11:44:52,823 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2117188002] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:44:52,823 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:44:52,823 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-16 11:44:52,823 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1784454226] [2022-11-16 11:44:52,823 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:44:52,824 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-16 11:44:52,824 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:44:52,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-16 11:44:52,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-16 11:44:52,825 INFO L87 Difference]: Start difference. First operand 948 states and 1721 transitions. Second operand has 8 states, 8 states have (on average 7.125) internal successors, (57), 8 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:44:53,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:44:53,059 INFO L93 Difference]: Finished difference Result 1101 states and 1955 transitions. [2022-11-16 11:44:53,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-16 11:44:53,060 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.125) internal successors, (57), 8 states have internal predecessors, (57), 0 states have call successors, (0), 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 57 [2022-11-16 11:44:53,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:44:53,064 INFO L225 Difference]: With dead ends: 1101 [2022-11-16 11:44:53,065 INFO L226 Difference]: Without dead ends: 1099 [2022-11-16 11:44:53,065 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2022-11-16 11:44:53,066 INFO L413 NwaCegarLoop]: 1603 mSDtfsCounter, 415 mSDsluCounter, 9044 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 415 SdHoareTripleChecker+Valid, 10647 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 11:44:53,066 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [415 Valid, 10647 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 11:44:53,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1099 states. [2022-11-16 11:44:53,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1099 to 954. [2022-11-16 11:44:53,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 954 states, 952 states have (on average 1.8130252100840336) internal successors, (1726), 953 states have internal predecessors, (1726), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:44:53,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 954 states to 954 states and 1726 transitions. [2022-11-16 11:44:53,104 INFO L78 Accepts]: Start accepts. Automaton has 954 states and 1726 transitions. Word has length 57 [2022-11-16 11:44:53,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:44:53,104 INFO L495 AbstractCegarLoop]: Abstraction has 954 states and 1726 transitions. [2022-11-16 11:44:53,104 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.125) internal successors, (57), 8 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:44:53,104 INFO L276 IsEmpty]: Start isEmpty. Operand 954 states and 1726 transitions. [2022-11-16 11:44:53,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-11-16 11:44:53,105 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:44:53,105 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] [2022-11-16 11:44:53,106 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-16 11:44:53,106 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:44:53,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:44:53,107 INFO L85 PathProgramCache]: Analyzing trace with hash 1148329065, now seen corresponding path program 1 times [2022-11-16 11:44:53,107 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:44:53,107 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1385236028] [2022-11-16 11:44:53,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:44:53,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:44:53,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:44:53,162 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:44:53,162 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:44:53,162 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1385236028] [2022-11-16 11:44:53,163 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1385236028] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:44:53,163 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:44:53,163 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:44:53,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [260569110] [2022-11-16 11:44:53,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:44:53,164 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:44:53,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:44:53,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:44:53,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:44:53,164 INFO L87 Difference]: Start difference. First operand 954 states and 1726 transitions. Second operand has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:44:53,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:44:53,255 INFO L93 Difference]: Finished difference Result 1264 states and 2198 transitions. [2022-11-16 11:44:53,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:44:53,255 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 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 58 [2022-11-16 11:44:53,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:44:53,259 INFO L225 Difference]: With dead ends: 1264 [2022-11-16 11:44:53,260 INFO L226 Difference]: Without dead ends: 1101 [2022-11-16 11:44:53,260 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:44:53,261 INFO L413 NwaCegarLoop]: 1593 mSDtfsCounter, 1497 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1497 SdHoareTripleChecker+Valid, 1668 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 11:44:53,261 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1497 Valid, 1668 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 11:44:53,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1101 states. [2022-11-16 11:44:53,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1101 to 1099. [2022-11-16 11:44:53,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1099 states, 1097 states have (on average 1.7711941659070192) internal successors, (1943), 1098 states have internal predecessors, (1943), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:44:53,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1099 states to 1099 states and 1943 transitions. [2022-11-16 11:44:53,311 INFO L78 Accepts]: Start accepts. Automaton has 1099 states and 1943 transitions. Word has length 58 [2022-11-16 11:44:53,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:44:53,311 INFO L495 AbstractCegarLoop]: Abstraction has 1099 states and 1943 transitions. [2022-11-16 11:44:53,312 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:44:53,312 INFO L276 IsEmpty]: Start isEmpty. Operand 1099 states and 1943 transitions. [2022-11-16 11:44:53,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-11-16 11:44:53,313 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:44:53,313 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] [2022-11-16 11:44:53,313 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-16 11:44:53,313 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:44:53,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:44:53,314 INFO L85 PathProgramCache]: Analyzing trace with hash -1908376215, now seen corresponding path program 1 times [2022-11-16 11:44:53,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:44:53,314 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1616352461] [2022-11-16 11:44:53,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:44:53,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:44:53,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:44:53,366 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:44:53,366 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:44:53,366 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1616352461] [2022-11-16 11:44:53,367 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1616352461] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:44:53,367 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:44:53,367 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:44:53,367 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2105319765] [2022-11-16 11:44:53,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:44:53,368 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:44:53,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:44:53,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:44:53,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:44:53,369 INFO L87 Difference]: Start difference. First operand 1099 states and 1943 transitions. Second operand has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:44:53,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:44:53,470 INFO L93 Difference]: Finished difference Result 1683 states and 2821 transitions. [2022-11-16 11:44:53,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:44:53,471 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 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 58 [2022-11-16 11:44:53,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:44:53,476 INFO L225 Difference]: With dead ends: 1683 [2022-11-16 11:44:53,477 INFO L226 Difference]: Without dead ends: 1375 [2022-11-16 11:44:53,478 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:44:53,478 INFO L413 NwaCegarLoop]: 1591 mSDtfsCounter, 1495 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1495 SdHoareTripleChecker+Valid, 1670 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 11:44:53,479 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1495 Valid, 1670 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 11:44:53,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1375 states. [2022-11-16 11:44:53,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1375 to 1373. [2022-11-16 11:44:53,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1373 states, 1371 states have (on average 1.7104303428154632) internal successors, (2345), 1372 states have internal predecessors, (2345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:44:53,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1373 states to 1373 states and 2345 transitions. [2022-11-16 11:44:53,568 INFO L78 Accepts]: Start accepts. Automaton has 1373 states and 2345 transitions. Word has length 58 [2022-11-16 11:44:53,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:44:53,568 INFO L495 AbstractCegarLoop]: Abstraction has 1373 states and 2345 transitions. [2022-11-16 11:44:53,568 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:44:53,569 INFO L276 IsEmpty]: Start isEmpty. Operand 1373 states and 2345 transitions. [2022-11-16 11:44:53,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-11-16 11:44:53,570 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:44:53,576 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:44:53,577 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-16 11:44:53,577 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:44:53,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:44:53,578 INFO L85 PathProgramCache]: Analyzing trace with hash 171122281, now seen corresponding path program 1 times [2022-11-16 11:44:53,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:44:53,578 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [196404068] [2022-11-16 11:44:53,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:44:53,578 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:44:53,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:44:53,650 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:44:53,650 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:44:53,650 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [196404068] [2022-11-16 11:44:53,650 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [196404068] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:44:53,651 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:44:53,651 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:44:53,651 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1144250055] [2022-11-16 11:44:53,651 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:44:53,652 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:44:53,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:44:53,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:44:53,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:44:53,653 INFO L87 Difference]: Start difference. First operand 1373 states and 2345 transitions. Second operand has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:44:53,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:44:53,826 INFO L93 Difference]: Finished difference Result 2473 states and 3971 transitions. [2022-11-16 11:44:53,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:44:53,827 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 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 58 [2022-11-16 11:44:53,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:44:53,834 INFO L225 Difference]: With dead ends: 2473 [2022-11-16 11:44:53,834 INFO L226 Difference]: Without dead ends: 1891 [2022-11-16 11:44:53,836 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:44:53,838 INFO L413 NwaCegarLoop]: 1589 mSDtfsCounter, 1493 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1493 SdHoareTripleChecker+Valid, 1672 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 11:44:53,839 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1493 Valid, 1672 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 11:44:53,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1891 states. [2022-11-16 11:44:54,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1891 to 1889. [2022-11-16 11:44:54,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1889 states, 1887 states have (on average 1.634870164281929) internal successors, (3085), 1888 states have internal predecessors, (3085), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:44:54,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1889 states to 1889 states and 3085 transitions. [2022-11-16 11:44:54,015 INFO L78 Accepts]: Start accepts. Automaton has 1889 states and 3085 transitions. Word has length 58 [2022-11-16 11:44:54,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:44:54,015 INFO L495 AbstractCegarLoop]: Abstraction has 1889 states and 3085 transitions. [2022-11-16 11:44:54,015 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:44:54,015 INFO L276 IsEmpty]: Start isEmpty. Operand 1889 states and 3085 transitions. [2022-11-16 11:44:54,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-11-16 11:44:54,016 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:44:54,016 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] [2022-11-16 11:44:54,017 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-16 11:44:54,017 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:44:54,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:44:54,018 INFO L85 PathProgramCache]: Analyzing trace with hash 1952055145, now seen corresponding path program 1 times [2022-11-16 11:44:54,018 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:44:54,018 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1628278245] [2022-11-16 11:44:54,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:44:54,019 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:44:54,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:44:54,085 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:44:54,085 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:44:54,089 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1628278245] [2022-11-16 11:44:54,090 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1628278245] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:44:54,090 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:44:54,090 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:44:54,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1226933649] [2022-11-16 11:44:54,090 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:44:54,091 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:44:54,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:44:54,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:44:54,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:44:54,092 INFO L87 Difference]: Start difference. First operand 1889 states and 3085 transitions. Second operand has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:44:54,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:44:54,459 INFO L93 Difference]: Finished difference Result 3957 states and 6079 transitions. [2022-11-16 11:44:54,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:44:54,460 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 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 58 [2022-11-16 11:44:54,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:44:54,470 INFO L225 Difference]: With dead ends: 3957 [2022-11-16 11:44:54,470 INFO L226 Difference]: Without dead ends: 2859 [2022-11-16 11:44:54,472 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:44:54,473 INFO L413 NwaCegarLoop]: 1587 mSDtfsCounter, 1491 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1491 SdHoareTripleChecker+Valid, 1674 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 11:44:54,473 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1491 Valid, 1674 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 11:44:54,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2859 states. [2022-11-16 11:44:54,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2859 to 2857. [2022-11-16 11:44:54,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2857 states, 2855 states have (on average 1.5541155866900176) internal successors, (4437), 2856 states have internal predecessors, (4437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:44:54,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2857 states to 2857 states and 4437 transitions. [2022-11-16 11:44:54,801 INFO L78 Accepts]: Start accepts. Automaton has 2857 states and 4437 transitions. Word has length 58 [2022-11-16 11:44:54,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:44:54,802 INFO L495 AbstractCegarLoop]: Abstraction has 2857 states and 4437 transitions. [2022-11-16 11:44:54,802 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:44:54,802 INFO L276 IsEmpty]: Start isEmpty. Operand 2857 states and 4437 transitions. [2022-11-16 11:44:54,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-11-16 11:44:54,803 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:44:54,803 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] [2022-11-16 11:44:54,803 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-16 11:44:54,803 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:44:54,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:44:54,804 INFO L85 PathProgramCache]: Analyzing trace with hash -783970460, now seen corresponding path program 1 times [2022-11-16 11:44:54,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:44:54,804 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [404001132] [2022-11-16 11:44:54,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:44:54,805 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:44:54,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:44:54,854 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:44:54,855 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:44:54,855 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [404001132] [2022-11-16 11:44:54,855 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [404001132] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:44:54,855 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:44:54,855 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:44:54,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [467886432] [2022-11-16 11:44:54,856 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:44:54,856 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:44:54,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:44:54,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:44:54,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:44:54,857 INFO L87 Difference]: Start difference. First operand 2857 states and 4437 transitions. Second operand has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:44:55,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:44:55,342 INFO L93 Difference]: Finished difference Result 5040 states and 7611 transitions. [2022-11-16 11:44:55,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:44:55,343 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 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 60 [2022-11-16 11:44:55,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:44:55,356 INFO L225 Difference]: With dead ends: 5040 [2022-11-16 11:44:55,356 INFO L226 Difference]: Without dead ends: 3853 [2022-11-16 11:44:55,358 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:44:55,359 INFO L413 NwaCegarLoop]: 1598 mSDtfsCounter, 1496 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1496 SdHoareTripleChecker+Valid, 1669 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 11:44:55,359 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1496 Valid, 1669 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 11:44:55,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3853 states. [2022-11-16 11:44:55,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3853 to 3851. [2022-11-16 11:44:55,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3851 states, 3849 states have (on average 1.5149389451805664) internal successors, (5831), 3850 states have internal predecessors, (5831), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:44:55,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3851 states to 3851 states and 5831 transitions. [2022-11-16 11:44:55,790 INFO L78 Accepts]: Start accepts. Automaton has 3851 states and 5831 transitions. Word has length 60 [2022-11-16 11:44:55,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:44:55,792 INFO L495 AbstractCegarLoop]: Abstraction has 3851 states and 5831 transitions. [2022-11-16 11:44:55,792 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:44:55,792 INFO L276 IsEmpty]: Start isEmpty. Operand 3851 states and 5831 transitions. [2022-11-16 11:44:55,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-11-16 11:44:55,798 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:44:55,798 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] [2022-11-16 11:44:55,798 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-16 11:44:55,798 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:44:55,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:44:55,799 INFO L85 PathProgramCache]: Analyzing trace with hash -476681499, now seen corresponding path program 1 times [2022-11-16 11:44:55,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:44:55,799 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1452762578] [2022-11-16 11:44:55,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:44:55,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:44:55,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:44:56,010 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:44:56,010 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:44:56,011 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1452762578] [2022-11-16 11:44:56,011 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1452762578] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:44:56,011 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:44:56,011 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:44:56,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [353605083] [2022-11-16 11:44:56,012 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:44:56,012 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:44:56,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:44:56,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:44:56,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:44:56,013 INFO L87 Difference]: Start difference. First operand 3851 states and 5831 transitions. Second operand has 4 states, 4 states have (on average 15.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:45:04,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:45:04,984 INFO L93 Difference]: Finished difference Result 6106 states and 10140 transitions. [2022-11-16 11:45:04,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 11:45:04,985 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 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 60 [2022-11-16 11:45:04,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:45:05,004 INFO L225 Difference]: With dead ends: 6106 [2022-11-16 11:45:05,004 INFO L226 Difference]: Without dead ends: 5353 [2022-11-16 11:45:05,007 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:45:05,007 INFO L413 NwaCegarLoop]: 800 mSDtfsCounter, 2395 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 5518 mSolverCounterSat, 1100 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2395 SdHoareTripleChecker+Valid, 818 SdHoareTripleChecker+Invalid, 6618 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1100 IncrementalHoareTripleChecker+Valid, 5518 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.2s IncrementalHoareTripleChecker+Time [2022-11-16 11:45:05,008 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2395 Valid, 818 Invalid, 6618 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1100 Valid, 5518 Invalid, 0 Unknown, 0 Unchecked, 8.2s Time] [2022-11-16 11:45:05,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5353 states. [2022-11-16 11:45:05,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5353 to 5353. [2022-11-16 11:45:05,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5353 states, 5351 states have (on average 1.4870117735002804) internal successors, (7957), 5352 states have internal predecessors, (7957), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:45:05,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5353 states to 5353 states and 7957 transitions. [2022-11-16 11:45:05,568 INFO L78 Accepts]: Start accepts. Automaton has 5353 states and 7957 transitions. Word has length 60 [2022-11-16 11:45:05,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:45:05,568 INFO L495 AbstractCegarLoop]: Abstraction has 5353 states and 7957 transitions. [2022-11-16 11:45:05,569 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:45:05,569 INFO L276 IsEmpty]: Start isEmpty. Operand 5353 states and 7957 transitions. [2022-11-16 11:45:05,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-11-16 11:45:05,571 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:45:05,571 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-16 11:45:05,572 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-16 11:45:05,572 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:45:05,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:45:05,573 INFO L85 PathProgramCache]: Analyzing trace with hash -2113574007, now seen corresponding path program 1 times [2022-11-16 11:45:05,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:45:05,573 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1844028672] [2022-11-16 11:45:05,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:45:05,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:45:05,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:45:05,775 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-16 11:45:05,775 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:45:05,775 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1844028672] [2022-11-16 11:45:05,776 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1844028672] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:45:05,776 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:45:05,776 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 11:45:05,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1254028752] [2022-11-16 11:45:05,776 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:45:05,777 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 11:45:05,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:45:05,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 11:45:05,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-16 11:45:05,778 INFO L87 Difference]: Start difference. First operand 5353 states and 7957 transitions. Second operand has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:45:07,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:45:07,799 INFO L93 Difference]: Finished difference Result 21301 states and 30619 transitions. [2022-11-16 11:45:07,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 11:45:07,800 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-11-16 11:45:07,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:45:07,848 INFO L225 Difference]: With dead ends: 21301 [2022-11-16 11:45:07,849 INFO L226 Difference]: Without dead ends: 18243 [2022-11-16 11:45:07,856 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-11-16 11:45:07,857 INFO L413 NwaCegarLoop]: 1613 mSDtfsCounter, 6333 mSDsluCounter, 2023 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6333 SdHoareTripleChecker+Valid, 3636 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 11:45:07,857 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6333 Valid, 3636 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 11:45:07,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18243 states. [2022-11-16 11:45:09,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18243 to 8409. [2022-11-16 11:45:09,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8409 states, 8407 states have (on average 1.4584275008921137) internal successors, (12261), 8408 states have internal predecessors, (12261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:45:09,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8409 states to 8409 states and 12261 transitions. [2022-11-16 11:45:09,054 INFO L78 Accepts]: Start accepts. Automaton has 8409 states and 12261 transitions. Word has length 77 [2022-11-16 11:45:09,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:45:09,054 INFO L495 AbstractCegarLoop]: Abstraction has 8409 states and 12261 transitions. [2022-11-16 11:45:09,054 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:45:09,054 INFO L276 IsEmpty]: Start isEmpty. Operand 8409 states and 12261 transitions. [2022-11-16 11:45:09,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-11-16 11:45:09,056 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:45:09,057 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-16 11:45:09,057 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-16 11:45:09,057 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:45:09,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:45:09,058 INFO L85 PathProgramCache]: Analyzing trace with hash -875311991, now seen corresponding path program 1 times [2022-11-16 11:45:09,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:45:09,058 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1115337918] [2022-11-16 11:45:09,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:45:09,059 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:45:09,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:45:09,247 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-16 11:45:09,247 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:45:09,247 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1115337918] [2022-11-16 11:45:09,248 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1115337918] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:45:09,248 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:45:09,248 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 11:45:09,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1539553826] [2022-11-16 11:45:09,248 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:45:09,249 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 11:45:09,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:45:09,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 11:45:09,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-16 11:45:09,250 INFO L87 Difference]: Start difference. First operand 8409 states and 12261 transitions. Second operand has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 7 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:45:12,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:45:12,017 INFO L93 Difference]: Finished difference Result 24357 states and 34923 transitions. [2022-11-16 11:45:12,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 11:45:12,018 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 7 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-11-16 11:45:12,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:45:12,063 INFO L225 Difference]: With dead ends: 24357 [2022-11-16 11:45:12,063 INFO L226 Difference]: Without dead ends: 21299 [2022-11-16 11:45:12,072 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-11-16 11:45:12,073 INFO L413 NwaCegarLoop]: 1610 mSDtfsCounter, 6358 mSDsluCounter, 1949 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6358 SdHoareTripleChecker+Valid, 3559 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 11:45:12,073 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6358 Valid, 3559 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 11:45:12,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21299 states. [2022-11-16 11:45:13,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21299 to 13001. [2022-11-16 11:45:13,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13001 states, 12999 states have (on average 1.436802830986999) internal successors, (18677), 13000 states have internal predecessors, (18677), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:45:13,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13001 states to 13001 states and 18677 transitions. [2022-11-16 11:45:13,722 INFO L78 Accepts]: Start accepts. Automaton has 13001 states and 18677 transitions. Word has length 77 [2022-11-16 11:45:13,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:45:13,722 INFO L495 AbstractCegarLoop]: Abstraction has 13001 states and 18677 transitions. [2022-11-16 11:45:13,722 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 7 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:45:13,722 INFO L276 IsEmpty]: Start isEmpty. Operand 13001 states and 18677 transitions. [2022-11-16 11:45:13,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-11-16 11:45:13,725 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:45:13,725 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-16 11:45:13,725 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-16 11:45:13,725 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:45:13,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:45:13,726 INFO L85 PathProgramCache]: Analyzing trace with hash 1204186505, now seen corresponding path program 1 times [2022-11-16 11:45:13,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:45:13,726 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [961305154] [2022-11-16 11:45:13,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:45:13,727 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:45:13,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:45:13,898 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-16 11:45:13,898 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:45:13,899 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [961305154] [2022-11-16 11:45:13,899 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [961305154] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:45:13,899 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:45:13,899 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 11:45:13,899 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [3185226] [2022-11-16 11:45:13,900 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:45:13,900 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 11:45:13,900 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:45:13,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 11:45:13,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-16 11:45:13,901 INFO L87 Difference]: Start difference. First operand 13001 states and 18677 transitions. Second operand has 7 states, 7 states have (on average 10.0) internal successors, (70), 7 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:45:17,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:45:17,074 INFO L93 Difference]: Finished difference Result 27413 states and 39227 transitions. [2022-11-16 11:45:17,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 11:45:17,078 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.0) internal successors, (70), 7 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-11-16 11:45:17,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:45:17,124 INFO L225 Difference]: With dead ends: 27413 [2022-11-16 11:45:17,124 INFO L226 Difference]: Without dead ends: 24355 [2022-11-16 11:45:17,134 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-11-16 11:45:17,136 INFO L413 NwaCegarLoop]: 1607 mSDtfsCounter, 6399 mSDsluCounter, 1936 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6399 SdHoareTripleChecker+Valid, 3543 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 11:45:17,136 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6399 Valid, 3543 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 11:45:17,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24355 states. [2022-11-16 11:45:19,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24355 to 16057. [2022-11-16 11:45:19,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16057 states, 16055 states have (on average 1.4313920896916847) internal successors, (22981), 16056 states have internal predecessors, (22981), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:45:19,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16057 states to 16057 states and 22981 transitions. [2022-11-16 11:45:19,078 INFO L78 Accepts]: Start accepts. Automaton has 16057 states and 22981 transitions. Word has length 77 [2022-11-16 11:45:19,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:45:19,078 INFO L495 AbstractCegarLoop]: Abstraction has 16057 states and 22981 transitions. [2022-11-16 11:45:19,078 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.0) internal successors, (70), 7 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:45:19,079 INFO L276 IsEmpty]: Start isEmpty. Operand 16057 states and 22981 transitions. [2022-11-16 11:45:19,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-11-16 11:45:19,081 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:45:19,081 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-16 11:45:19,081 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-16 11:45:19,082 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:45:19,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:45:19,082 INFO L85 PathProgramCache]: Analyzing trace with hash -1309847927, now seen corresponding path program 1 times [2022-11-16 11:45:19,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:45:19,082 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [373300239] [2022-11-16 11:45:19,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:45:19,083 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:45:19,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:45:19,246 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-16 11:45:19,247 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:45:19,247 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [373300239] [2022-11-16 11:45:19,249 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [373300239] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:45:19,249 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:45:19,249 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 11:45:19,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2040430801] [2022-11-16 11:45:19,250 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:45:19,250 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 11:45:19,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:45:19,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 11:45:19,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-16 11:45:19,251 INFO L87 Difference]: Start difference. First operand 16057 states and 22981 transitions. Second operand has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:45:23,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:45:23,219 INFO L93 Difference]: Finished difference Result 30469 states and 43531 transitions. [2022-11-16 11:45:23,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 11:45:23,219 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-11-16 11:45:23,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:45:23,274 INFO L225 Difference]: With dead ends: 30469 [2022-11-16 11:45:23,275 INFO L226 Difference]: Without dead ends: 27411 [2022-11-16 11:45:23,282 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-11-16 11:45:23,282 INFO L413 NwaCegarLoop]: 1611 mSDtfsCounter, 6348 mSDsluCounter, 1984 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6348 SdHoareTripleChecker+Valid, 3595 SdHoareTripleChecker+Invalid, 108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 11:45:23,283 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6348 Valid, 3595 Invalid, 108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 11:45:23,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27411 states. [2022-11-16 11:45:25,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27411 to 19113. [2022-11-16 11:45:25,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19113 states, 19111 states have (on average 1.4277117890220292) internal successors, (27285), 19112 states have internal predecessors, (27285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:45:25,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19113 states to 19113 states and 27285 transitions. [2022-11-16 11:45:25,679 INFO L78 Accepts]: Start accepts. Automaton has 19113 states and 27285 transitions. Word has length 77 [2022-11-16 11:45:25,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:45:25,679 INFO L495 AbstractCegarLoop]: Abstraction has 19113 states and 27285 transitions. [2022-11-16 11:45:25,679 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:45:25,680 INFO L276 IsEmpty]: Start isEmpty. Operand 19113 states and 27285 transitions. [2022-11-16 11:45:25,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-11-16 11:45:25,682 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:45:25,683 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-16 11:45:25,683 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-16 11:45:25,683 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:45:25,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:45:25,684 INFO L85 PathProgramCache]: Analyzing trace with hash -974292767, now seen corresponding path program 1 times [2022-11-16 11:45:25,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:45:25,684 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [947344415] [2022-11-16 11:45:25,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:45:25,684 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:45:25,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:45:25,785 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:45:25,785 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:45:25,785 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [947344415] [2022-11-16 11:45:25,785 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [947344415] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:45:25,785 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:45:25,786 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:45:25,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [317898187] [2022-11-16 11:45:25,786 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:45:25,787 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:45:25,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:45:25,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:45:25,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:45:25,787 INFO L87 Difference]: Start difference. First operand 19113 states and 27285 transitions. Second operand has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:45:27,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:45:27,831 INFO L93 Difference]: Finished difference Result 31105 states and 44380 transitions. [2022-11-16 11:45:27,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:45:27,832 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-11-16 11:45:27,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:45:27,863 INFO L225 Difference]: With dead ends: 31105 [2022-11-16 11:45:27,863 INFO L226 Difference]: Without dead ends: 14287 [2022-11-16 11:45:27,881 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:45:27,882 INFO L413 NwaCegarLoop]: 1586 mSDtfsCounter, 50 mSDsluCounter, 1531 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 3117 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 11:45:27,882 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 3117 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 11:45:27,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14287 states. [2022-11-16 11:45:29,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14287 to 14285. [2022-11-16 11:45:29,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14285 states, 14283 states have (on average 1.4367429811664216) internal successors, (20521), 14284 states have internal predecessors, (20521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:45:29,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14285 states to 14285 states and 20521 transitions. [2022-11-16 11:45:29,853 INFO L78 Accepts]: Start accepts. Automaton has 14285 states and 20521 transitions. Word has length 79 [2022-11-16 11:45:29,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:45:29,854 INFO L495 AbstractCegarLoop]: Abstraction has 14285 states and 20521 transitions. [2022-11-16 11:45:29,855 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:45:29,855 INFO L276 IsEmpty]: Start isEmpty. Operand 14285 states and 20521 transitions. [2022-11-16 11:45:29,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-11-16 11:45:29,857 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:45:29,857 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-16 11:45:29,857 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-16 11:45:29,857 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:45:29,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:45:29,858 INFO L85 PathProgramCache]: Analyzing trace with hash -146696572, now seen corresponding path program 1 times [2022-11-16 11:45:29,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:45:29,858 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1806334314] [2022-11-16 11:45:29,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:45:29,858 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:45:29,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:45:30,049 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-16 11:45:30,049 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:45:30,049 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1806334314] [2022-11-16 11:45:30,049 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1806334314] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:45:30,049 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:45:30,050 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 11:45:30,050 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [827167084] [2022-11-16 11:45:30,050 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:45:30,050 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 11:45:30,050 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:45:30,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 11:45:30,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-16 11:45:30,051 INFO L87 Difference]: Start difference. First operand 14285 states and 20521 transitions. Second operand has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 7 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:45:33,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:45:33,045 INFO L93 Difference]: Finished difference Result 25177 states and 36047 transitions. [2022-11-16 11:45:33,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 11:45:33,046 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 7 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-11-16 11:45:33,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:45:33,080 INFO L225 Difference]: With dead ends: 25177 [2022-11-16 11:45:33,080 INFO L226 Difference]: Without dead ends: 22999 [2022-11-16 11:45:33,086 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-11-16 11:45:33,087 INFO L413 NwaCegarLoop]: 1605 mSDtfsCounter, 6336 mSDsluCounter, 2120 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6336 SdHoareTripleChecker+Valid, 3725 SdHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 11:45:33,087 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6336 Valid, 3725 Invalid, 110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 106 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 11:45:33,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22999 states. [2022-11-16 11:45:35,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22999 to 16461. [2022-11-16 11:45:35,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16461 states, 16459 states have (on average 1.4334406707576401) internal successors, (23593), 16460 states have internal predecessors, (23593), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:45:35,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16461 states to 16461 states and 23593 transitions. [2022-11-16 11:45:35,151 INFO L78 Accepts]: Start accepts. Automaton has 16461 states and 23593 transitions. Word has length 79 [2022-11-16 11:45:35,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:45:35,152 INFO L495 AbstractCegarLoop]: Abstraction has 16461 states and 23593 transitions. [2022-11-16 11:45:35,152 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 7 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:45:35,152 INFO L276 IsEmpty]: Start isEmpty. Operand 16461 states and 23593 transitions. [2022-11-16 11:45:35,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-11-16 11:45:35,154 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:45:35,154 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-16 11:45:35,154 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-16 11:45:35,154 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:45:35,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:45:35,155 INFO L85 PathProgramCache]: Analyzing trace with hash 762759661, now seen corresponding path program 1 times [2022-11-16 11:45:35,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:45:35,155 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [417157929] [2022-11-16 11:45:35,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:45:35,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:45:35,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:45:35,272 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:45:35,272 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:45:35,273 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [417157929] [2022-11-16 11:45:35,273 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [417157929] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:45:35,273 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:45:35,273 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:45:35,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1032833318] [2022-11-16 11:45:35,274 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:45:35,274 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:45:35,274 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:45:35,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:45:35,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:45:35,275 INFO L87 Difference]: Start difference. First operand 16461 states and 23593 transitions. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:45:36,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:45:36,645 INFO L93 Difference]: Finished difference Result 23537 states and 33579 transitions. [2022-11-16 11:45:36,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:45:36,645 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2022-11-16 11:45:36,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:45:36,662 INFO L225 Difference]: With dead ends: 23537 [2022-11-16 11:45:36,662 INFO L226 Difference]: Without dead ends: 9391 [2022-11-16 11:45:36,676 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:45:36,676 INFO L413 NwaCegarLoop]: 1579 mSDtfsCounter, 45 mSDsluCounter, 1523 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 3102 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 11:45:36,677 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 3102 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 11:45:36,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9391 states. [2022-11-16 11:45:37,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9391 to 9389. [2022-11-16 11:45:37,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9389 states, 9387 states have (on average 1.4386918078193247) internal successors, (13505), 9388 states have internal predecessors, (13505), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:45:37,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9389 states to 9389 states and 13505 transitions. [2022-11-16 11:45:37,751 INFO L78 Accepts]: Start accepts. Automaton has 9389 states and 13505 transitions. Word has length 80 [2022-11-16 11:45:37,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:45:37,751 INFO L495 AbstractCegarLoop]: Abstraction has 9389 states and 13505 transitions. [2022-11-16 11:45:37,752 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:45:37,752 INFO L276 IsEmpty]: Start isEmpty. Operand 9389 states and 13505 transitions. [2022-11-16 11:45:37,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2022-11-16 11:45:37,754 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:45:37,754 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-16 11:45:37,754 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-11-16 11:45:37,755 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:45:37,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:45:37,755 INFO L85 PathProgramCache]: Analyzing trace with hash -154885185, now seen corresponding path program 1 times [2022-11-16 11:45:37,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:45:37,755 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [62411173] [2022-11-16 11:45:37,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:45:37,756 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:45:37,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:45:37,873 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:45:37,873 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:45:37,874 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [62411173] [2022-11-16 11:45:37,874 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [62411173] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:45:37,874 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:45:37,874 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:45:37,874 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [658483804] [2022-11-16 11:45:37,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:45:37,874 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:45:37,875 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:45:37,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:45:37,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:45:37,875 INFO L87 Difference]: Start difference. First operand 9389 states and 13505 transitions. Second operand has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:45:38,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:45:38,536 INFO L93 Difference]: Finished difference Result 12929 states and 18447 transitions. [2022-11-16 11:45:38,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:45:38,537 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 82 [2022-11-16 11:45:38,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:45:38,546 INFO L225 Difference]: With dead ends: 12929 [2022-11-16 11:45:38,546 INFO L226 Difference]: Without dead ends: 5855 [2022-11-16 11:45:38,553 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:45:38,554 INFO L413 NwaCegarLoop]: 1572 mSDtfsCounter, 42 mSDsluCounter, 1515 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 3087 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 11:45:38,554 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 3087 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 11:45:38,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5855 states. [2022-11-16 11:45:39,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5855 to 5853. [2022-11-16 11:45:39,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5853 states, 5851 states have (on average 1.4549649632541446) internal successors, (8513), 5852 states have internal predecessors, (8513), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:45:39,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5853 states to 5853 states and 8513 transitions. [2022-11-16 11:45:39,188 INFO L78 Accepts]: Start accepts. Automaton has 5853 states and 8513 transitions. Word has length 82 [2022-11-16 11:45:39,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:45:39,188 INFO L495 AbstractCegarLoop]: Abstraction has 5853 states and 8513 transitions. [2022-11-16 11:45:39,188 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:45:39,188 INFO L276 IsEmpty]: Start isEmpty. Operand 5853 states and 8513 transitions. [2022-11-16 11:45:39,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-11-16 11:45:39,190 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:45:39,190 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-16 11:45:39,190 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-11-16 11:45:39,191 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:45:39,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:45:39,191 INFO L85 PathProgramCache]: Analyzing trace with hash 673860625, now seen corresponding path program 1 times [2022-11-16 11:45:39,191 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:45:39,191 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1140456462] [2022-11-16 11:45:39,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:45:39,192 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:45:39,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:45:39,341 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:45:39,341 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:45:39,341 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1140456462] [2022-11-16 11:45:39,341 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1140456462] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:45:39,342 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:45:39,342 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:45:39,343 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [353599458] [2022-11-16 11:45:39,343 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:45:39,344 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:45:39,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:45:39,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:45:39,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:45:39,345 INFO L87 Difference]: Start difference. First operand 5853 states and 8513 transitions. Second operand has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:45:39,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:45:39,763 INFO L93 Difference]: Finished difference Result 7625 states and 10959 transitions. [2022-11-16 11:45:39,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:45:39,764 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 84 [2022-11-16 11:45:39,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:45:39,768 INFO L225 Difference]: With dead ends: 7625 [2022-11-16 11:45:39,768 INFO L226 Difference]: Without dead ends: 4087 [2022-11-16 11:45:39,771 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:45:39,772 INFO L413 NwaCegarLoop]: 1565 mSDtfsCounter, 39 mSDsluCounter, 1507 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 3072 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 11:45:39,772 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 3072 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 11:45:39,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4087 states. [2022-11-16 11:45:40,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4087 to 4085. [2022-11-16 11:45:40,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4085 states, 4083 states have (on average 1.4800391868723977) internal successors, (6043), 4084 states have internal predecessors, (6043), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:45:40,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4085 states to 4085 states and 6043 transitions. [2022-11-16 11:45:40,102 INFO L78 Accepts]: Start accepts. Automaton has 4085 states and 6043 transitions. Word has length 84 [2022-11-16 11:45:40,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:45:40,103 INFO L495 AbstractCegarLoop]: Abstraction has 4085 states and 6043 transitions. [2022-11-16 11:45:40,103 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:45:40,103 INFO L276 IsEmpty]: Start isEmpty. Operand 4085 states and 6043 transitions. [2022-11-16 11:45:40,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-11-16 11:45:40,105 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:45:40,105 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-16 11:45:40,105 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-11-16 11:45:40,106 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:45:40,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:45:40,106 INFO L85 PathProgramCache]: Analyzing trace with hash 1584456419, now seen corresponding path program 1 times [2022-11-16 11:45:40,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:45:40,106 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1251097080] [2022-11-16 11:45:40,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:45:40,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:45:40,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:45:40,220 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:45:40,221 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:45:40,221 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1251097080] [2022-11-16 11:45:40,221 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1251097080] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:45:40,221 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:45:40,222 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:45:40,222 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [317703674] [2022-11-16 11:45:40,222 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:45:40,223 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:45:40,223 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:45:40,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:45:40,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:45:40,224 INFO L87 Difference]: Start difference. First operand 4085 states and 6043 transitions. Second operand has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:45:40,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:45:40,472 INFO L93 Difference]: Finished difference Result 4973 states and 7254 transitions. [2022-11-16 11:45:40,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:45:40,473 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 86 [2022-11-16 11:45:40,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:45:40,477 INFO L225 Difference]: With dead ends: 4973 [2022-11-16 11:45:40,477 INFO L226 Difference]: Without dead ends: 3203 [2022-11-16 11:45:40,481 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:45:40,483 INFO L413 NwaCegarLoop]: 1558 mSDtfsCounter, 36 mSDsluCounter, 1499 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 3057 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 11:45:40,484 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 3057 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 11:45:40,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3203 states. [2022-11-16 11:45:40,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3203 to 3201. [2022-11-16 11:45:40,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3201 states, 3199 states have (on average 1.5070334479524852) internal successors, (4821), 3200 states have internal predecessors, (4821), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:45:40,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3201 states to 3201 states and 4821 transitions. [2022-11-16 11:45:40,734 INFO L78 Accepts]: Start accepts. Automaton has 3201 states and 4821 transitions. Word has length 86 [2022-11-16 11:45:40,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:45:40,734 INFO L495 AbstractCegarLoop]: Abstraction has 3201 states and 4821 transitions. [2022-11-16 11:45:40,734 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:45:40,735 INFO L276 IsEmpty]: Start isEmpty. Operand 3201 states and 4821 transitions. [2022-11-16 11:45:40,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-11-16 11:45:40,736 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:45:40,736 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:45:40,736 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-11-16 11:45:40,736 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:45:40,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:45:40,737 INFO L85 PathProgramCache]: Analyzing trace with hash -1438021579, now seen corresponding path program 1 times [2022-11-16 11:45:40,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:45:40,737 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1718208733] [2022-11-16 11:45:40,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:45:40,738 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:45:40,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:45:41,265 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 15 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:45:41,265 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:45:41,265 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1718208733] [2022-11-16 11:45:41,265 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1718208733] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:45:41,266 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [316722004] [2022-11-16 11:45:41,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:45:41,266 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:45:41,266 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6f5715d-83eb-45a0-99b9-f38c109ab376/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:45:41,269 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6f5715d-83eb-45a0-99b9-f38c109ab376/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:45:41,269 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6f5715d-83eb-45a0-99b9-f38c109ab376/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-16 11:45:41,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:45:41,417 INFO L263 TraceCheckSpWp]: Trace formula consists of 414 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-16 11:45:41,426 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:45:41,868 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 4 proven. 11 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-16 11:45:41,868 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:45:42,078 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 4 proven. 11 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-16 11:45:42,079 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [316722004] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:45:42,079 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 11:45:42,079 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 6, 4] total 16 [2022-11-16 11:45:42,079 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [890851766] [2022-11-16 11:45:42,079 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 11:45:42,080 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-16 11:45:42,080 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:45:42,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-16 11:45:42,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=200, Unknown=0, NotChecked=0, Total=240 [2022-11-16 11:45:42,081 INFO L87 Difference]: Start difference. First operand 3201 states and 4821 transitions. Second operand has 16 states, 16 states have (on average 15.4375) internal successors, (247), 16 states have internal predecessors, (247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:45:47,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:45:47,031 INFO L93 Difference]: Finished difference Result 10112 states and 14126 transitions. [2022-11-16 11:45:47,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-11-16 11:45:47,032 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 15.4375) internal successors, (247), 16 states have internal predecessors, (247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 88 [2022-11-16 11:45:47,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:45:47,040 INFO L225 Difference]: With dead ends: 10112 [2022-11-16 11:45:47,040 INFO L226 Difference]: Without dead ends: 9226 [2022-11-16 11:45:47,042 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 217 GetRequests, 170 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 628 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=540, Invalid=1812, Unknown=0, NotChecked=0, Total=2352 [2022-11-16 11:45:47,043 INFO L413 NwaCegarLoop]: 1530 mSDtfsCounter, 14416 mSDsluCounter, 6405 mSDsCounter, 0 mSdLazyCounter, 684 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14416 SdHoareTripleChecker+Valid, 7935 SdHoareTripleChecker+Invalid, 728 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 684 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-16 11:45:47,044 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14416 Valid, 7935 Invalid, 728 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 684 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-16 11:45:47,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9226 states. [2022-11-16 11:45:48,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9226 to 7834. [2022-11-16 11:45:48,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7834 states, 7832 states have (on average 1.3608273748723188) internal successors, (10658), 7833 states have internal predecessors, (10658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:45:48,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7834 states to 7834 states and 10658 transitions. [2022-11-16 11:45:48,131 INFO L78 Accepts]: Start accepts. Automaton has 7834 states and 10658 transitions. Word has length 88 [2022-11-16 11:45:48,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:45:48,131 INFO L495 AbstractCegarLoop]: Abstraction has 7834 states and 10658 transitions. [2022-11-16 11:45:48,131 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 15.4375) internal successors, (247), 16 states have internal predecessors, (247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:45:48,132 INFO L276 IsEmpty]: Start isEmpty. Operand 7834 states and 10658 transitions. [2022-11-16 11:45:48,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2022-11-16 11:45:48,133 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:45:48,133 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-16 11:45:48,141 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6f5715d-83eb-45a0-99b9-f38c109ab376/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-16 11:45:48,339 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6f5715d-83eb-45a0-99b9-f38c109ab376/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2022-11-16 11:45:48,339 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:45:48,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:45:48,340 INFO L85 PathProgramCache]: Analyzing trace with hash -298025004, now seen corresponding path program 1 times [2022-11-16 11:45:48,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:45:48,340 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [804633292] [2022-11-16 11:45:48,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:45:48,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:45:48,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:45:49,716 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 7 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:45:49,716 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:45:49,716 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [804633292] [2022-11-16 11:45:49,717 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [804633292] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:45:49,717 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1696434903] [2022-11-16 11:45:49,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:45:49,717 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:45:49,717 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6f5715d-83eb-45a0-99b9-f38c109ab376/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:45:49,718 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6f5715d-83eb-45a0-99b9-f38c109ab376/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:45:49,720 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6f5715d-83eb-45a0-99b9-f38c109ab376/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-16 11:45:49,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:45:49,854 INFO L263 TraceCheckSpWp]: Trace formula consists of 417 conjuncts, 27 conjunts are in the unsatisfiable core [2022-11-16 11:45:49,857 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:45:51,838 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 15 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:45:51,840 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:45:56,551 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 13 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:45:56,552 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1696434903] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:45:56,553 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 11:45:56,553 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 14, 17] total 41 [2022-11-16 11:45:56,553 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1298943794] [2022-11-16 11:45:56,553 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 11:45:56,554 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-11-16 11:45:56,554 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:45:56,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-11-16 11:45:56,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=207, Invalid=1433, Unknown=0, NotChecked=0, Total=1640 [2022-11-16 11:45:56,556 INFO L87 Difference]: Start difference. First operand 7834 states and 10658 transitions. Second operand has 41 states, 41 states have (on average 5.780487804878049) internal successors, (237), 41 states have internal predecessors, (237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:47:16,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:47:16,155 INFO L93 Difference]: Finished difference Result 59895 states and 76044 transitions. [2022-11-16 11:47:16,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 233 states. [2022-11-16 11:47:16,156 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 5.780487804878049) internal successors, (237), 41 states have internal predecessors, (237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 89 [2022-11-16 11:47:16,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:47:16,214 INFO L225 Difference]: With dead ends: 59895 [2022-11-16 11:47:16,214 INFO L226 Difference]: Without dead ends: 54576 [2022-11-16 11:47:16,232 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 420 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 270 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30719 ImplicationChecksByTransitivity, 61.8s TimeCoverageRelationStatistics Valid=11067, Invalid=62645, Unknown=0, NotChecked=0, Total=73712 [2022-11-16 11:47:16,232 INFO L413 NwaCegarLoop]: 1639 mSDtfsCounter, 32171 mSDsluCounter, 16120 mSDsCounter, 0 mSdLazyCounter, 3500 mSolverCounterSat, 213 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32171 SdHoareTripleChecker+Valid, 17759 SdHoareTripleChecker+Invalid, 3713 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 213 IncrementalHoareTripleChecker+Valid, 3500 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2022-11-16 11:47:16,233 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32171 Valid, 17759 Invalid, 3713 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [213 Valid, 3500 Invalid, 0 Unknown, 0 Unchecked, 4.5s Time] [2022-11-16 11:47:16,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54576 states. [2022-11-16 11:47:23,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54576 to 30875. [2022-11-16 11:47:23,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30875 states, 30873 states have (on average 1.299161079260195) internal successors, (40109), 30874 states have internal predecessors, (40109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:47:23,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30875 states to 30875 states and 40109 transitions. [2022-11-16 11:47:23,993 INFO L78 Accepts]: Start accepts. Automaton has 30875 states and 40109 transitions. Word has length 89 [2022-11-16 11:47:23,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:47:23,993 INFO L495 AbstractCegarLoop]: Abstraction has 30875 states and 40109 transitions. [2022-11-16 11:47:23,994 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 5.780487804878049) internal successors, (237), 41 states have internal predecessors, (237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:47:23,994 INFO L276 IsEmpty]: Start isEmpty. Operand 30875 states and 40109 transitions. [2022-11-16 11:47:23,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-11-16 11:47:23,995 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:47:23,995 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:47:24,006 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6f5715d-83eb-45a0-99b9-f38c109ab376/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-16 11:47:24,200 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6f5715d-83eb-45a0-99b9-f38c109ab376/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2022-11-16 11:47:24,201 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:47:24,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:47:24,201 INFO L85 PathProgramCache]: Analyzing trace with hash -417458555, now seen corresponding path program 1 times [2022-11-16 11:47:24,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:47:24,201 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [664060794] [2022-11-16 11:47:24,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:47:24,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:47:24,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:47:24,640 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 11 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:47:24,640 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:47:24,641 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [664060794] [2022-11-16 11:47:24,641 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [664060794] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:47:24,641 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [316565988] [2022-11-16 11:47:24,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:47:24,641 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:47:24,642 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6f5715d-83eb-45a0-99b9-f38c109ab376/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:47:24,643 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6f5715d-83eb-45a0-99b9-f38c109ab376/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:47:24,669 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6f5715d-83eb-45a0-99b9-f38c109ab376/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-16 11:47:24,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:47:24,787 INFO L263 TraceCheckSpWp]: Trace formula consists of 419 conjuncts, 19 conjunts are in the unsatisfiable core [2022-11-16 11:47:24,790 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:47:25,793 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 11 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:47:25,794 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:47:27,023 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 11 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:47:27,023 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [316565988] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:47:27,023 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 11:47:27,024 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 12, 12] total 28 [2022-11-16 11:47:27,024 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1792782026] [2022-11-16 11:47:27,024 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 11:47:27,024 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-11-16 11:47:27,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:47:27,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-11-16 11:47:27,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=148, Invalid=608, Unknown=0, NotChecked=0, Total=756 [2022-11-16 11:47:27,026 INFO L87 Difference]: Start difference. First operand 30875 states and 40109 transitions. Second operand has 28 states, 28 states have (on average 8.214285714285714) internal successors, (230), 28 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:47:52,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:47:52,552 INFO L93 Difference]: Finished difference Result 110524 states and 142104 transitions. [2022-11-16 11:47:52,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-11-16 11:47:52,553 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 8.214285714285714) internal successors, (230), 28 states have internal predecessors, (230), 0 states have call successors, (0), 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 [2022-11-16 11:47:52,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:47:52,700 INFO L225 Difference]: With dead ends: 110524 [2022-11-16 11:47:52,701 INFO L226 Difference]: Without dead ends: 83110 [2022-11-16 11:47:52,723 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 161 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 423 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=508, Invalid=1562, Unknown=0, NotChecked=0, Total=2070 [2022-11-16 11:47:52,724 INFO L413 NwaCegarLoop]: 1547 mSDtfsCounter, 16143 mSDsluCounter, 5063 mSDsCounter, 0 mSdLazyCounter, 607 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16143 SdHoareTripleChecker+Valid, 6610 SdHoareTripleChecker+Invalid, 636 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 607 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-16 11:47:52,724 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16143 Valid, 6610 Invalid, 636 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 607 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-16 11:47:52,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83110 states.