./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/aws-c-common/aws_byte_buf_advance_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 791161d1 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/aws-c-common/aws_byte_buf_advance_harness.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --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 64bit --witnessprinter.graph.data.programhash 9a96b91703f0cc76adc9b0fdbd8386a96920c1be21a810b6415a59c2166f1461 --- Real Ultimate output --- This is Ultimate 0.2.2-?-791161d [2022-07-22 22:08:39,863 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-22 22:08:39,864 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-22 22:08:39,914 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-22 22:08:39,916 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-22 22:08:39,917 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-22 22:08:39,920 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-22 22:08:39,923 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-22 22:08:39,925 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-22 22:08:39,926 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-22 22:08:39,926 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-22 22:08:39,928 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-22 22:08:39,929 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-22 22:08:39,933 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-22 22:08:39,934 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-22 22:08:39,936 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-22 22:08:39,937 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-22 22:08:39,952 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-22 22:08:39,953 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-22 22:08:39,954 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-22 22:08:39,954 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-22 22:08:39,955 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-22 22:08:39,955 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-22 22:08:39,956 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-22 22:08:39,957 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-22 22:08:39,958 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-22 22:08:39,958 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-22 22:08:39,958 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-22 22:08:39,959 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-22 22:08:39,959 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-22 22:08:39,960 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-22 22:08:39,960 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-22 22:08:39,960 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-22 22:08:39,961 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-22 22:08:39,961 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-22 22:08:39,962 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-22 22:08:39,962 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-22 22:08:39,962 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-22 22:08:39,962 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-22 22:08:39,962 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-22 22:08:39,963 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-22 22:08:39,967 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-22 22:08:39,967 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-07-22 22:08:39,989 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-22 22:08:39,991 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-22 22:08:39,991 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-22 22:08:39,991 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-22 22:08:39,991 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-22 22:08:39,992 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-22 22:08:39,992 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-22 22:08:39,992 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-22 22:08:39,992 INFO L138 SettingsManager]: * Use SBE=true [2022-07-22 22:08:39,993 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-22 22:08:39,993 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-22 22:08:39,993 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-22 22:08:39,994 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-22 22:08:39,994 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-22 22:08:39,994 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-22 22:08:39,994 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-22 22:08:39,994 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-22 22:08:39,994 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-22 22:08:39,995 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-22 22:08:39,995 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-22 22:08:39,996 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-22 22:08:39,996 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 22:08:39,996 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-22 22:08:39,996 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-22 22:08:39,997 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-22 22:08:39,997 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-22 22:08:39,997 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-22 22:08:39,998 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-22 22:08:39,998 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-22 22:08:39,998 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-22 22:08:39,998 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:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9a96b91703f0cc76adc9b0fdbd8386a96920c1be21a810b6415a59c2166f1461 [2022-07-22 22:08:40,214 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-22 22:08:40,233 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-22 22:08:40,235 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-22 22:08:40,235 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-22 22:08:40,236 INFO L275 PluginConnector]: CDTParser initialized [2022-07-22 22:08:40,237 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/aws-c-common/aws_byte_buf_advance_harness.i [2022-07-22 22:08:40,274 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/206473dc0/47edf87540fa4e8e89120acc23123658/FLAGa56b151da [2022-07-22 22:08:40,878 INFO L306 CDTParser]: Found 1 translation units. [2022-07-22 22:08:40,878 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_byte_buf_advance_harness.i [2022-07-22 22:08:40,905 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/206473dc0/47edf87540fa4e8e89120acc23123658/FLAGa56b151da [2022-07-22 22:08:41,311 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/206473dc0/47edf87540fa4e8e89120acc23123658 [2022-07-22 22:08:41,313 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-22 22:08:41,314 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-22 22:08:41,315 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-22 22:08:41,316 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-22 22:08:41,318 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-22 22:08:41,318 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 10:08:41" (1/1) ... [2022-07-22 22:08:41,319 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2e2daa97 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 10:08:41, skipping insertion in model container [2022-07-22 22:08:41,319 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 10:08:41" (1/1) ... [2022-07-22 22:08:41,323 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-22 22:08:41,394 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-22 22:08:41,589 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_byte_buf_advance_harness.i[4494,4507] [2022-07-22 22:08:41,594 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_byte_buf_advance_harness.i[4554,4567] [2022-07-22 22:08:42,052 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:08:42,053 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:08:42,053 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:08:42,054 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:08:42,054 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:08:42,062 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:08:42,062 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:08:42,063 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:08:42,064 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:08:42,266 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-07-22 22:08:42,267 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-07-22 22:08:42,267 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-07-22 22:08:42,268 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-07-22 22:08:42,269 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-07-22 22:08:42,269 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-07-22 22:08:42,270 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-07-22 22:08:42,270 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-07-22 22:08:42,270 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-07-22 22:08:42,271 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-07-22 22:08:42,354 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-07-22 22:08:42,467 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:08:42,467 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:08:42,528 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 22:08:42,568 INFO L203 MainTranslator]: Completed pre-run [2022-07-22 22:08:42,586 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_byte_buf_advance_harness.i[4494,4507] [2022-07-22 22:08:42,587 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_byte_buf_advance_harness.i[4554,4567] [2022-07-22 22:08:42,627 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:08:42,628 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:08:42,628 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:08:42,629 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:08:42,629 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:08:42,640 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:08:42,641 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:08:42,641 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:08:42,642 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:08:42,676 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-07-22 22:08:42,676 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-07-22 22:08:42,677 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-07-22 22:08:42,677 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-07-22 22:08:42,678 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-07-22 22:08:42,678 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-07-22 22:08:42,678 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-07-22 22:08:42,678 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-07-22 22:08:42,679 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-07-22 22:08:42,679 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-07-22 22:08:42,698 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-07-22 22:08:42,740 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:08:42,740 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:08:42,764 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 22:08:42,920 INFO L208 MainTranslator]: Completed translation [2022-07-22 22:08:42,921 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 10:08:42 WrapperNode [2022-07-22 22:08:42,921 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-22 22:08:42,922 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-22 22:08:42,922 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-22 22:08:42,922 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-22 22:08:42,926 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 10:08:42" (1/1) ... [2022-07-22 22:08:43,003 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 10:08:42" (1/1) ... [2022-07-22 22:08:43,065 INFO L137 Inliner]: procedures = 691, calls = 2677, calls flagged for inlining = 60, calls inlined = 8, statements flattened = 972 [2022-07-22 22:08:43,065 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-22 22:08:43,066 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-22 22:08:43,066 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-22 22:08:43,066 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-22 22:08:43,073 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 10:08:42" (1/1) ... [2022-07-22 22:08:43,073 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 10:08:42" (1/1) ... [2022-07-22 22:08:43,082 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 10:08:42" (1/1) ... [2022-07-22 22:08:43,082 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 10:08:42" (1/1) ... [2022-07-22 22:08:43,106 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 10:08:42" (1/1) ... [2022-07-22 22:08:43,122 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 10:08:42" (1/1) ... [2022-07-22 22:08:43,132 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 10:08:42" (1/1) ... [2022-07-22 22:08:43,141 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-22 22:08:43,145 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-22 22:08:43,145 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-22 22:08:43,146 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-22 22:08:43,146 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 10:08:42" (1/1) ... [2022-07-22 22:08:43,159 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 22:08:43,165 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 22:08:43,174 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-22 22:08:43,180 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-22 22:08:43,199 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_is_valid [2022-07-22 22:08:43,199 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_is_valid [2022-07-22 22:08:43,199 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-22 22:08:43,199 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2022-07-22 22:08:43,199 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2022-07-22 22:08:43,199 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-22 22:08:43,199 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-07-22 22:08:43,200 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-07-22 22:08:43,200 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-22 22:08:43,200 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-22 22:08:43,200 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-22 22:08:43,200 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_byte_buf_has_allocated_buffer_member [2022-07-22 22:08:43,200 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_byte_buf_has_allocated_buffer_member [2022-07-22 22:08:43,200 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-22 22:08:43,200 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-22 22:08:43,201 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2022-07-22 22:08:43,201 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2022-07-22 22:08:43,201 INFO L130 BoogieDeclarations]: Found specification of procedure assert_byte_from_buffer_matches [2022-07-22 22:08:43,201 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_byte_from_buffer_matches [2022-07-22 22:08:43,201 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-07-22 22:08:43,201 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-07-22 22:08:43,201 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-22 22:08:43,201 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-07-22 22:08:43,201 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-07-22 22:08:43,202 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2022-07-22 22:08:43,202 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2022-07-22 22:08:43,202 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_is_bounded [2022-07-22 22:08:43,202 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_is_bounded [2022-07-22 22:08:43,202 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-22 22:08:43,203 INFO L130 BoogieDeclarations]: Found specification of procedure memset_impl [2022-07-22 22:08:43,203 INFO L138 BoogieDeclarations]: Found implementation of procedure memset_impl [2022-07-22 22:08:43,203 INFO L130 BoogieDeclarations]: Found specification of procedure my_memset [2022-07-22 22:08:43,203 INFO L138 BoogieDeclarations]: Found implementation of procedure my_memset [2022-07-22 22:08:43,203 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-22 22:08:43,466 INFO L234 CfgBuilder]: Building ICFG [2022-07-22 22:08:43,467 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-22 22:08:44,307 INFO L275 CfgBuilder]: Performing block encoding [2022-07-22 22:08:44,313 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-22 22:08:44,313 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2022-07-22 22:08:44,315 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 10:08:44 BoogieIcfgContainer [2022-07-22 22:08:44,315 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-22 22:08:44,317 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-22 22:08:44,317 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-22 22:08:44,319 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-22 22:08:44,319 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.07 10:08:41" (1/3) ... [2022-07-22 22:08:44,320 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a6a7d81 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 10:08:44, skipping insertion in model container [2022-07-22 22:08:44,320 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 10:08:42" (2/3) ... [2022-07-22 22:08:44,320 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a6a7d81 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 10:08:44, skipping insertion in model container [2022-07-22 22:08:44,320 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 10:08:44" (3/3) ... [2022-07-22 22:08:44,321 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_byte_buf_advance_harness.i [2022-07-22 22:08:44,330 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-22 22:08:44,330 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-22 22:08:44,371 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-22 22:08:44,379 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=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@74bca7d0, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@342eb971 [2022-07-22 22:08:44,379 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-22 22:08:44,382 INFO L276 IsEmpty]: Start isEmpty. Operand has 173 states, 106 states have (on average 1.2264150943396226) internal successors, (130), 106 states have internal predecessors, (130), 55 states have call successors, (55), 11 states have call predecessors, (55), 11 states have return successors, (55), 55 states have call predecessors, (55), 55 states have call successors, (55) [2022-07-22 22:08:44,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2022-07-22 22:08:44,397 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:08:44,398 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 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] [2022-07-22 22:08:44,399 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:08:44,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:08:44,402 INFO L85 PathProgramCache]: Analyzing trace with hash -1247030305, now seen corresponding path program 1 times [2022-07-22 22:08:44,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:08:44,408 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [745876455] [2022-07-22 22:08:44,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:08:44,409 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:08:44,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:08:44,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 22:08:44,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:08:44,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-22 22:08:44,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:08:44,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 22:08:44,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:08:44,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:08:44,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:08:44,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 22:08:44,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:08:44,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:08:44,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:08:44,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-22 22:08:44,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:08:44,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-22 22:08:44,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:08:44,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-22 22:08:44,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:08:44,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-22 22:08:44,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:08:44,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-07-22 22:08:44,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:08:44,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-22 22:08:44,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:08:44,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-22 22:08:44,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:08:44,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-07-22 22:08:44,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:08:44,975 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2022-07-22 22:08:44,976 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:08:44,976 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [745876455] [2022-07-22 22:08:44,977 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [745876455] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 22:08:44,977 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 22:08:44,977 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 22:08:44,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1238041562] [2022-07-22 22:08:44,978 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 22:08:44,981 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 22:08:44,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:08:45,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 22:08:45,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-22 22:08:45,003 INFO L87 Difference]: Start difference. First operand has 173 states, 106 states have (on average 1.2264150943396226) internal successors, (130), 106 states have internal predecessors, (130), 55 states have call successors, (55), 11 states have call predecessors, (55), 11 states have return successors, (55), 55 states have call predecessors, (55), 55 states have call successors, (55) Second operand has 4 states, 4 states have (on average 8.5) internal successors, (34), 2 states have internal predecessors, (34), 2 states have call successors, (15), 4 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-07-22 22:08:45,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 22:08:45,254 INFO L93 Difference]: Finished difference Result 349 states and 522 transitions. [2022-07-22 22:08:45,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-22 22:08:45,256 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 2 states have internal predecessors, (34), 2 states have call successors, (15), 4 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 89 [2022-07-22 22:08:45,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 22:08:45,263 INFO L225 Difference]: With dead ends: 349 [2022-07-22 22:08:45,263 INFO L226 Difference]: Without dead ends: 175 [2022-07-22 22:08:45,266 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-22 22:08:45,268 INFO L413 NwaCegarLoop]: 217 mSDtfsCounter, 119 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 119 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 124 SdHoareTripleChecker+Valid, 278 SdHoareTripleChecker+Invalid, 200 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 119 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-22 22:08:45,269 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [124 Valid, 278 Invalid, 200 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [119 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-22 22:08:45,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2022-07-22 22:08:45,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 168. [2022-07-22 22:08:45,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168 states, 101 states have (on average 1.198019801980198) internal successors, (121), 102 states have internal predecessors, (121), 55 states have call successors, (55), 11 states have call predecessors, (55), 11 states have return successors, (54), 54 states have call predecessors, (54), 54 states have call successors, (54) [2022-07-22 22:08:45,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 230 transitions. [2022-07-22 22:08:45,303 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 230 transitions. Word has length 89 [2022-07-22 22:08:45,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 22:08:45,304 INFO L495 AbstractCegarLoop]: Abstraction has 168 states and 230 transitions. [2022-07-22 22:08:45,304 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 2 states have internal predecessors, (34), 2 states have call successors, (15), 4 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-07-22 22:08:45,304 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 230 transitions. [2022-07-22 22:08:45,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-07-22 22:08:45,307 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:08:45,307 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 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] [2022-07-22 22:08:45,307 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-22 22:08:45,308 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:08:45,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:08:45,308 INFO L85 PathProgramCache]: Analyzing trace with hash -1477386906, now seen corresponding path program 1 times [2022-07-22 22:08:45,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:08:45,308 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [680666206] [2022-07-22 22:08:45,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:08:45,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:08:45,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:08:45,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 22:08:45,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:08:45,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-22 22:08:45,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:08:45,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 22:08:45,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:08:45,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:08:45,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:08:45,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 22:08:45,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:08:45,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:08:45,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:08:45,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-22 22:08:45,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:08:45,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-22 22:08:45,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:08:45,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-22 22:08:45,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:08:45,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-22 22:08:45,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:08:45,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-07-22 22:08:45,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:08:45,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-22 22:08:45,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:08:45,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-22 22:08:45,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:08:45,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-22 22:08:45,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:08:45,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-07-22 22:08:45,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:08:45,598 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2022-07-22 22:08:45,598 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:08:45,598 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [680666206] [2022-07-22 22:08:45,598 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [680666206] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 22:08:45,598 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1592497037] [2022-07-22 22:08:45,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:08:45,599 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:08:45,599 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 22:08:45,600 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 22:08:45,601 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-22 22:08:46,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:08:46,012 INFO L263 TraceCheckSpWp]: Trace formula consists of 2754 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-22 22:08:46,019 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 22:08:46,143 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 50 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2022-07-22 22:08:46,143 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 22:08:46,143 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1592497037] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 22:08:46,144 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 22:08:46,144 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 11 [2022-07-22 22:08:46,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [918952751] [2022-07-22 22:08:46,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 22:08:46,145 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-22 22:08:46,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:08:46,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-22 22:08:46,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2022-07-22 22:08:46,146 INFO L87 Difference]: Start difference. First operand 168 states and 230 transitions. Second operand has 6 states, 6 states have (on average 7.5) internal successors, (45), 6 states have internal predecessors, (45), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2022-07-22 22:08:46,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 22:08:46,422 INFO L93 Difference]: Finished difference Result 332 states and 462 transitions. [2022-07-22 22:08:46,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-22 22:08:46,423 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.5) internal successors, (45), 6 states have internal predecessors, (45), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) Word has length 96 [2022-07-22 22:08:46,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 22:08:46,425 INFO L225 Difference]: With dead ends: 332 [2022-07-22 22:08:46,425 INFO L226 Difference]: Without dead ends: 171 [2022-07-22 22:08:46,426 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2022-07-22 22:08:46,427 INFO L413 NwaCegarLoop]: 170 mSDtfsCounter, 259 mSDsluCounter, 412 mSDsCounter, 0 mSdLazyCounter, 213 mSolverCounterSat, 111 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 259 SdHoareTripleChecker+Valid, 582 SdHoareTripleChecker+Invalid, 324 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 111 IncrementalHoareTripleChecker+Valid, 213 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-22 22:08:46,427 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [259 Valid, 582 Invalid, 324 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [111 Valid, 213 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-22 22:08:46,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2022-07-22 22:08:46,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 171. [2022-07-22 22:08:46,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 171 states, 103 states have (on average 1.1941747572815533) internal successors, (123), 105 states have internal predecessors, (123), 55 states have call successors, (55), 11 states have call predecessors, (55), 12 states have return successors, (63), 54 states have call predecessors, (63), 54 states have call successors, (63) [2022-07-22 22:08:46,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 241 transitions. [2022-07-22 22:08:46,463 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 241 transitions. Word has length 96 [2022-07-22 22:08:46,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 22:08:46,467 INFO L495 AbstractCegarLoop]: Abstraction has 171 states and 241 transitions. [2022-07-22 22:08:46,467 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.5) internal successors, (45), 6 states have internal predecessors, (45), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2022-07-22 22:08:46,468 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 241 transitions. [2022-07-22 22:08:46,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-07-22 22:08:46,474 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:08:46,475 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 3, 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] [2022-07-22 22:08:46,498 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-22 22:08:46,687 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:08:46,688 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:08:46,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:08:46,688 INFO L85 PathProgramCache]: Analyzing trace with hash -1893468965, now seen corresponding path program 1 times [2022-07-22 22:08:46,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:08:46,688 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1063035648] [2022-07-22 22:08:46,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:08:46,689 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:08:46,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:08:46,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 22:08:46,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:08:46,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-22 22:08:46,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:08:46,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 22:08:46,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:08:46,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:08:46,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:08:46,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 22:08:46,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:08:46,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:08:46,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:08:46,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-22 22:08:46,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:08:46,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-22 22:08:46,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:08:46,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-22 22:08:46,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:08:46,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-07-22 22:08:46,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:08:47,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-22 22:08:47,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:08:47,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-22 22:08:47,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:08:47,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-22 22:08:47,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:08:47,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-22 22:08:47,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:08:47,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-07-22 22:08:47,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:08:47,050 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2022-07-22 22:08:47,052 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:08:47,052 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1063035648] [2022-07-22 22:08:47,052 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1063035648] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 22:08:47,052 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [707462634] [2022-07-22 22:08:47,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:08:47,053 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:08:47,053 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 22:08:47,054 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 22:08:47,055 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-22 22:08:47,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:08:47,443 INFO L263 TraceCheckSpWp]: Trace formula consists of 2771 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-22 22:08:47,447 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 22:08:47,518 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-07-22 22:08:47,519 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 22:08:47,519 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [707462634] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 22:08:47,519 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 22:08:47,519 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 13 [2022-07-22 22:08:47,519 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1862299976] [2022-07-22 22:08:47,519 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 22:08:47,520 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 22:08:47,520 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:08:47,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 22:08:47,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2022-07-22 22:08:47,521 INFO L87 Difference]: Start difference. First operand 171 states and 241 transitions. Second operand has 7 states, 6 states have (on average 8.833333333333334) internal successors, (53), 7 states have internal predecessors, (53), 4 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 3 states have call predecessors, (15), 4 states have call successors, (15) [2022-07-22 22:08:47,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 22:08:47,836 INFO L93 Difference]: Finished difference Result 293 states and 416 transitions. [2022-07-22 22:08:47,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-22 22:08:47,837 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 8.833333333333334) internal successors, (53), 7 states have internal predecessors, (53), 4 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 3 states have call predecessors, (15), 4 states have call successors, (15) Word has length 102 [2022-07-22 22:08:47,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 22:08:47,838 INFO L225 Difference]: With dead ends: 293 [2022-07-22 22:08:47,838 INFO L226 Difference]: Without dead ends: 171 [2022-07-22 22:08:47,839 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 127 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=218, Unknown=0, NotChecked=0, Total=272 [2022-07-22 22:08:47,840 INFO L413 NwaCegarLoop]: 167 mSDtfsCounter, 299 mSDsluCounter, 528 mSDsCounter, 0 mSdLazyCounter, 250 mSolverCounterSat, 143 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 299 SdHoareTripleChecker+Valid, 695 SdHoareTripleChecker+Invalid, 393 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 143 IncrementalHoareTripleChecker+Valid, 250 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-22 22:08:47,840 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [299 Valid, 695 Invalid, 393 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [143 Valid, 250 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-22 22:08:47,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2022-07-22 22:08:47,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 171. [2022-07-22 22:08:47,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 171 states, 103 states have (on average 1.1941747572815533) internal successors, (123), 105 states have internal predecessors, (123), 55 states have call successors, (55), 11 states have call predecessors, (55), 12 states have return successors, (60), 54 states have call predecessors, (60), 54 states have call successors, (60) [2022-07-22 22:08:47,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 238 transitions. [2022-07-22 22:08:47,856 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 238 transitions. Word has length 102 [2022-07-22 22:08:47,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 22:08:47,857 INFO L495 AbstractCegarLoop]: Abstraction has 171 states and 238 transitions. [2022-07-22 22:08:47,857 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 8.833333333333334) internal successors, (53), 7 states have internal predecessors, (53), 4 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 3 states have call predecessors, (15), 4 states have call successors, (15) [2022-07-22 22:08:47,857 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 238 transitions. [2022-07-22 22:08:47,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2022-07-22 22:08:47,860 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:08:47,860 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 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] [2022-07-22 22:08:47,883 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-22 22:08:48,074 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2022-07-22 22:08:48,074 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:08:48,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:08:48,075 INFO L85 PathProgramCache]: Analyzing trace with hash -1871994096, now seen corresponding path program 2 times [2022-07-22 22:08:48,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:08:48,075 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [377686434] [2022-07-22 22:08:48,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:08:48,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:08:48,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:08:48,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 22:08:48,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:08:48,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-22 22:08:48,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:08:48,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 22:08:48,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:08:48,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:08:48,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:08:48,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 22:08:48,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:08:48,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:08:48,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:08:48,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-22 22:08:48,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:08:48,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-22 22:08:48,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:08:48,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-22 22:08:48,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:08:48,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-07-22 22:08:48,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:08:48,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-22 22:08:48,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:08:48,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-22 22:08:48,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:08:48,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-22 22:08:48,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:08:48,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-22 22:08:48,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:08:48,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-22 22:08:48,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:08:48,336 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2022-07-22 22:08:48,336 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:08:48,336 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [377686434] [2022-07-22 22:08:48,336 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [377686434] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 22:08:48,337 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1983926393] [2022-07-22 22:08:48,337 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-22 22:08:48,337 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:08:48,337 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 22:08:48,338 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 22:08:48,362 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-22 22:08:48,701 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-07-22 22:08:48,702 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-22 22:08:48,709 INFO L263 TraceCheckSpWp]: Trace formula consists of 2390 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-22 22:08:48,716 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 22:08:48,868 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2022-07-22 22:08:48,868 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 22:08:49,010 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2022-07-22 22:08:49,010 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1983926393] provided 1 perfect and 1 imperfect interpolant sequences [2022-07-22 22:08:49,010 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-07-22 22:08:49,010 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8, 6] total 14 [2022-07-22 22:08:49,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1671633108] [2022-07-22 22:08:49,010 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 22:08:49,011 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-22 22:08:49,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:08:49,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-22 22:08:49,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2022-07-22 22:08:49,012 INFO L87 Difference]: Start difference. First operand 171 states and 238 transitions. Second operand has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 4 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2022-07-22 22:08:49,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 22:08:49,106 INFO L93 Difference]: Finished difference Result 256 states and 358 transitions. [2022-07-22 22:08:49,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-22 22:08:49,107 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 4 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) Word has length 108 [2022-07-22 22:08:49,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 22:08:49,108 INFO L225 Difference]: With dead ends: 256 [2022-07-22 22:08:49,108 INFO L226 Difference]: Without dead ends: 171 [2022-07-22 22:08:49,109 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 253 GetRequests, 238 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=225, Unknown=0, NotChecked=0, Total=272 [2022-07-22 22:08:49,109 INFO L413 NwaCegarLoop]: 215 mSDtfsCounter, 229 mSDsluCounter, 598 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 233 SdHoareTripleChecker+Valid, 813 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-22 22:08:49,109 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [233 Valid, 813 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-22 22:08:49,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2022-07-22 22:08:49,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 171. [2022-07-22 22:08:49,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 171 states, 103 states have (on average 1.1941747572815533) internal successors, (123), 105 states have internal predecessors, (123), 55 states have call successors, (55), 11 states have call predecessors, (55), 12 states have return successors, (59), 54 states have call predecessors, (59), 54 states have call successors, (59) [2022-07-22 22:08:49,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 237 transitions. [2022-07-22 22:08:49,119 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 237 transitions. Word has length 108 [2022-07-22 22:08:49,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 22:08:49,119 INFO L495 AbstractCegarLoop]: Abstraction has 171 states and 237 transitions. [2022-07-22 22:08:49,119 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 4 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2022-07-22 22:08:49,119 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 237 transitions. [2022-07-22 22:08:49,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2022-07-22 22:08:49,120 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:08:49,120 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 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] [2022-07-22 22:08:49,142 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-22 22:08:49,327 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:08:49,328 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:08:49,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:08:49,328 INFO L85 PathProgramCache]: Analyzing trace with hash -225220613, now seen corresponding path program 3 times [2022-07-22 22:08:49,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:08:49,328 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [883272911] [2022-07-22 22:08:49,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:08:49,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:08:49,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:08:49,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 22:08:49,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:08:49,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-22 22:08:49,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:08:49,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 22:08:49,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:08:49,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:08:49,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:08:49,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 22:08:49,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:08:49,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:08:49,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:08:49,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-22 22:08:49,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:08:49,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-22 22:08:49,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:08:49,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-22 22:08:49,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:08:49,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-07-22 22:08:49,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:08:49,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-22 22:08:49,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:08:49,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-22 22:08:49,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:08:49,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-22 22:08:49,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:08:49,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-22 22:08:49,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:08:49,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-22 22:08:49,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:08:49,602 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2022-07-22 22:08:49,602 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:08:49,602 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [883272911] [2022-07-22 22:08:49,603 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [883272911] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 22:08:49,603 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1289594650] [2022-07-22 22:08:49,603 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-07-22 22:08:49,603 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:08:49,603 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 22:08:49,604 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 22:08:49,647 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-22 22:08:49,974 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2022-07-22 22:08:49,975 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-22 22:08:49,982 INFO L263 TraceCheckSpWp]: Trace formula consists of 2407 conjuncts, 19 conjunts are in the unsatisfiable core [2022-07-22 22:08:49,985 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 22:08:50,027 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:08:50,028 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:08:50,029 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:08:50,030 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 30 [2022-07-22 22:08:50,261 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2022-07-22 22:08:50,261 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 22:08:50,262 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1289594650] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 22:08:50,262 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 22:08:50,262 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [8] total 15 [2022-07-22 22:08:50,262 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [798061418] [2022-07-22 22:08:50,262 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 22:08:50,263 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-22 22:08:50,263 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:08:50,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-22 22:08:50,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2022-07-22 22:08:50,263 INFO L87 Difference]: Start difference. First operand 171 states and 237 transitions. Second operand has 9 states, 8 states have (on average 6.625) internal successors, (53), 8 states have internal predecessors, (53), 3 states have call successors, (16), 3 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-07-22 22:08:50,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 22:08:50,305 INFO L93 Difference]: Finished difference Result 282 states and 390 transitions. [2022-07-22 22:08:50,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-22 22:08:50,306 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 6.625) internal successors, (53), 8 states have internal predecessors, (53), 3 states have call successors, (16), 3 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 114 [2022-07-22 22:08:50,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 22:08:50,307 INFO L225 Difference]: With dead ends: 282 [2022-07-22 22:08:50,307 INFO L226 Difference]: Without dead ends: 190 [2022-07-22 22:08:50,308 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2022-07-22 22:08:50,308 INFO L413 NwaCegarLoop]: 249 mSDtfsCounter, 37 mSDsluCounter, 471 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 720 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 60 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 22:08:50,309 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 720 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 60 Unchecked, 0.0s Time] [2022-07-22 22:08:50,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2022-07-22 22:08:50,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 188. [2022-07-22 22:08:50,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 188 states, 118 states have (on average 1.2033898305084745) internal successors, (142), 121 states have internal predecessors, (142), 56 states have call successors, (56), 12 states have call predecessors, (56), 13 states have return successors, (61), 54 states have call predecessors, (61), 55 states have call successors, (61) [2022-07-22 22:08:50,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 259 transitions. [2022-07-22 22:08:50,318 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 259 transitions. Word has length 114 [2022-07-22 22:08:50,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 22:08:50,318 INFO L495 AbstractCegarLoop]: Abstraction has 188 states and 259 transitions. [2022-07-22 22:08:50,319 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 6.625) internal successors, (53), 8 states have internal predecessors, (53), 3 states have call successors, (16), 3 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-07-22 22:08:50,319 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 259 transitions. [2022-07-22 22:08:50,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2022-07-22 22:08:50,320 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:08:50,320 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 3, 3, 3, 3, 3, 3, 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] [2022-07-22 22:08:50,342 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-07-22 22:08:50,535 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:08:50,535 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:08:50,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:08:50,535 INFO L85 PathProgramCache]: Analyzing trace with hash -812026627, now seen corresponding path program 1 times [2022-07-22 22:08:50,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:08:50,535 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1077864259] [2022-07-22 22:08:50,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:08:50,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:08:50,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:08:50,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 22:08:50,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:08:50,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-22 22:08:50,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:08:50,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 22:08:50,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:08:50,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:08:50,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:08:50,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 22:08:50,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:08:50,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:08:50,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:08:50,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-22 22:08:50,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:08:50,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-22 22:08:50,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:08:50,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-22 22:08:50,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:08:50,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-07-22 22:08:50,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:08:50,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-22 22:08:50,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:08:50,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-22 22:08:50,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:08:50,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-22 22:08:50,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:08:50,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-22 22:08:50,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:08:50,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-22 22:08:50,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:08:50,766 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2022-07-22 22:08:50,766 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:08:50,766 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1077864259] [2022-07-22 22:08:50,766 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1077864259] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 22:08:50,767 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [862902178] [2022-07-22 22:08:50,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:08:50,767 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:08:50,767 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 22:08:50,784 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 22:08:50,785 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-07-22 22:08:51,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:08:51,184 INFO L263 TraceCheckSpWp]: Trace formula consists of 2802 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-22 22:08:51,186 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 22:08:51,201 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2022-07-22 22:08:51,201 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 22:08:51,201 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [862902178] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 22:08:51,202 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 22:08:51,202 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8] total 10 [2022-07-22 22:08:51,202 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [410646841] [2022-07-22 22:08:51,202 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 22:08:51,202 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 22:08:51,202 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:08:51,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 22:08:51,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-07-22 22:08:51,203 INFO L87 Difference]: Start difference. First operand 188 states and 259 transitions. Second operand has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 1 states have call successors, (15) [2022-07-22 22:08:51,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 22:08:51,247 INFO L93 Difference]: Finished difference Result 393 states and 553 transitions. [2022-07-22 22:08:51,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 22:08:51,247 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 1 states have call successors, (15) Word has length 114 [2022-07-22 22:08:51,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 22:08:51,249 INFO L225 Difference]: With dead ends: 393 [2022-07-22 22:08:51,249 INFO L226 Difference]: Without dead ends: 212 [2022-07-22 22:08:51,250 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-07-22 22:08:51,251 INFO L413 NwaCegarLoop]: 256 mSDtfsCounter, 28 mSDsluCounter, 462 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 718 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 22:08:51,252 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 718 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 22:08:51,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2022-07-22 22:08:51,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 190. [2022-07-22 22:08:51,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 190 states, 120 states have (on average 1.1916666666666667) internal successors, (143), 123 states have internal predecessors, (143), 56 states have call successors, (56), 12 states have call predecessors, (56), 13 states have return successors, (61), 54 states have call predecessors, (61), 55 states have call successors, (61) [2022-07-22 22:08:51,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 260 transitions. [2022-07-22 22:08:51,265 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 260 transitions. Word has length 114 [2022-07-22 22:08:51,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 22:08:51,265 INFO L495 AbstractCegarLoop]: Abstraction has 190 states and 260 transitions. [2022-07-22 22:08:51,265 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 1 states have call successors, (15) [2022-07-22 22:08:51,265 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 260 transitions. [2022-07-22 22:08:51,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2022-07-22 22:08:51,266 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:08:51,266 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 3, 3, 3, 3, 3, 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] [2022-07-22 22:08:51,289 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-07-22 22:08:51,486 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:08:51,486 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:08:51,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:08:51,487 INFO L85 PathProgramCache]: Analyzing trace with hash -110962049, now seen corresponding path program 1 times [2022-07-22 22:08:51,487 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:08:51,487 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1234407209] [2022-07-22 22:08:51,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:08:51,487 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:08:51,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:08:51,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 22:08:51,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:08:51,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-22 22:08:51,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:08:51,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 22:08:51,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:08:51,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:08:51,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:08:51,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 22:08:51,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:08:51,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:08:51,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:08:51,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-22 22:08:51,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:08:51,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-22 22:08:51,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:08:51,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-22 22:08:51,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:08:51,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-07-22 22:08:51,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:08:51,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-22 22:08:51,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:08:51,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-22 22:08:51,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:08:51,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-22 22:08:51,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:08:51,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-22 22:08:51,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:08:51,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-22 22:08:51,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:08:51,726 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2022-07-22 22:08:51,726 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:08:51,727 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1234407209] [2022-07-22 22:08:51,727 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1234407209] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 22:08:51,727 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [779114759] [2022-07-22 22:08:51,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:08:51,727 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:08:51,727 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 22:08:51,728 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 22:08:51,729 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-07-22 22:08:52,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:08:52,132 INFO L263 TraceCheckSpWp]: Trace formula consists of 2797 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-22 22:08:52,135 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 22:08:52,150 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2022-07-22 22:08:52,151 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 22:08:52,151 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [779114759] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 22:08:52,151 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 22:08:52,151 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8] total 10 [2022-07-22 22:08:52,151 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [505971839] [2022-07-22 22:08:52,151 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 22:08:52,152 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 22:08:52,152 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:08:52,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 22:08:52,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-07-22 22:08:52,152 INFO L87 Difference]: Start difference. First operand 190 states and 260 transitions. Second operand has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 1 states have call successors, (15) [2022-07-22 22:08:52,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 22:08:52,188 INFO L93 Difference]: Finished difference Result 381 states and 533 transitions. [2022-07-22 22:08:52,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 22:08:52,188 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 1 states have call successors, (15) Word has length 114 [2022-07-22 22:08:52,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 22:08:52,189 INFO L225 Difference]: With dead ends: 381 [2022-07-22 22:08:52,189 INFO L226 Difference]: Without dead ends: 198 [2022-07-22 22:08:52,190 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-07-22 22:08:52,190 INFO L413 NwaCegarLoop]: 241 mSDtfsCounter, 20 mSDsluCounter, 441 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 682 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 22:08:52,191 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 682 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 22:08:52,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2022-07-22 22:08:52,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 182. [2022-07-22 22:08:52,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 182 states, 113 states have (on average 1.1946902654867257) internal successors, (135), 115 states have internal predecessors, (135), 56 states have call successors, (56), 12 states have call predecessors, (56), 12 states have return successors, (60), 54 states have call predecessors, (60), 55 states have call successors, (60) [2022-07-22 22:08:52,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 251 transitions. [2022-07-22 22:08:52,199 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 251 transitions. Word has length 114 [2022-07-22 22:08:52,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 22:08:52,200 INFO L495 AbstractCegarLoop]: Abstraction has 182 states and 251 transitions. [2022-07-22 22:08:52,200 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 1 states have call successors, (15) [2022-07-22 22:08:52,200 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 251 transitions. [2022-07-22 22:08:52,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2022-07-22 22:08:52,201 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:08:52,201 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 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] [2022-07-22 22:08:52,223 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-07-22 22:08:52,419 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:08:52,419 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:08:52,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:08:52,420 INFO L85 PathProgramCache]: Analyzing trace with hash 2075601977, now seen corresponding path program 1 times [2022-07-22 22:08:52,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:08:52,420 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1128910524] [2022-07-22 22:08:52,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:08:52,420 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:08:52,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:08:52,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 22:08:52,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:08:52,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-22 22:08:52,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:08:52,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 22:08:52,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:08:52,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:08:52,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:08:52,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 22:08:52,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:08:52,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:08:52,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:08:52,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-22 22:08:52,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:08:52,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-22 22:08:52,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:08:52,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-22 22:08:52,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:08:52,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-07-22 22:08:52,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:08:52,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-22 22:08:52,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:08:52,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-22 22:08:52,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:08:52,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-22 22:08:52,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:08:52,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-22 22:08:52,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:08:52,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-22 22:08:52,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:08:52,637 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2022-07-22 22:08:52,637 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:08:52,638 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1128910524] [2022-07-22 22:08:52,638 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1128910524] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 22:08:52,638 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1404720282] [2022-07-22 22:08:52,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:08:52,638 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:08:52,638 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 22:08:52,639 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 22:08:52,640 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-07-22 22:08:53,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:08:53,061 INFO L263 TraceCheckSpWp]: Trace formula consists of 2805 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-22 22:08:53,064 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 22:08:53,138 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 67 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2022-07-22 22:08:53,139 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 22:08:53,139 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1404720282] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 22:08:53,139 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 22:08:53,139 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 13 [2022-07-22 22:08:53,139 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733610315] [2022-07-22 22:08:53,139 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 22:08:53,139 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 22:08:53,140 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:08:53,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 22:08:53,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2022-07-22 22:08:53,140 INFO L87 Difference]: Start difference. First operand 182 states and 251 transitions. Second operand has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 7 states have internal predecessors, (59), 4 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 4 states have call predecessors, (15), 4 states have call successors, (15) [2022-07-22 22:08:53,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 22:08:53,378 INFO L93 Difference]: Finished difference Result 324 states and 450 transitions. [2022-07-22 22:08:53,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-22 22:08:53,379 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 7 states have internal predecessors, (59), 4 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 4 states have call predecessors, (15), 4 states have call successors, (15) Word has length 114 [2022-07-22 22:08:53,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 22:08:53,380 INFO L225 Difference]: With dead ends: 324 [2022-07-22 22:08:53,380 INFO L226 Difference]: Without dead ends: 179 [2022-07-22 22:08:53,381 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=218, Unknown=0, NotChecked=0, Total=272 [2022-07-22 22:08:53,381 INFO L413 NwaCegarLoop]: 167 mSDtfsCounter, 298 mSDsluCounter, 389 mSDsCounter, 0 mSdLazyCounter, 179 mSolverCounterSat, 126 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 298 SdHoareTripleChecker+Valid, 556 SdHoareTripleChecker+Invalid, 305 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 126 IncrementalHoareTripleChecker+Valid, 179 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-22 22:08:53,382 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [298 Valid, 556 Invalid, 305 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [126 Valid, 179 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-22 22:08:53,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2022-07-22 22:08:53,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 179. [2022-07-22 22:08:53,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 179 states, 111 states have (on average 1.1891891891891893) internal successors, (132), 112 states have internal predecessors, (132), 56 states have call successors, (56), 12 states have call predecessors, (56), 11 states have return successors, (55), 54 states have call predecessors, (55), 55 states have call successors, (55) [2022-07-22 22:08:53,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 243 transitions. [2022-07-22 22:08:53,389 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 243 transitions. Word has length 114 [2022-07-22 22:08:53,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 22:08:53,390 INFO L495 AbstractCegarLoop]: Abstraction has 179 states and 243 transitions. [2022-07-22 22:08:53,390 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 7 states have internal predecessors, (59), 4 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 4 states have call predecessors, (15), 4 states have call successors, (15) [2022-07-22 22:08:53,390 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 243 transitions. [2022-07-22 22:08:53,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2022-07-22 22:08:53,391 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:08:53,391 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2022-07-22 22:08:53,418 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-07-22 22:08:53,615 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:08:53,616 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:08:53,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:08:53,616 INFO L85 PathProgramCache]: Analyzing trace with hash -1603675154, now seen corresponding path program 1 times [2022-07-22 22:08:53,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:08:53,616 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1956758715] [2022-07-22 22:08:53,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:08:53,616 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:08:53,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:08:53,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 22:08:53,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:08:53,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-22 22:08:53,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:08:53,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 22:08:53,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:08:53,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:08:53,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:08:53,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 22:08:53,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:08:53,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:08:53,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:08:53,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-22 22:08:53,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:08:53,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-22 22:08:53,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:08:53,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-22 22:08:53,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:08:53,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-07-22 22:08:53,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:08:53,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-22 22:08:53,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:08:53,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-22 22:08:53,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:08:53,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-07-22 22:08:53,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:08:53,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-22 22:08:53,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:08:53,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-07-22 22:08:53,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:08:53,914 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 117 trivial. 0 not checked. [2022-07-22 22:08:53,915 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:08:53,915 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1956758715] [2022-07-22 22:08:53,915 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1956758715] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 22:08:53,915 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 22:08:53,915 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-22 22:08:53,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [463043306] [2022-07-22 22:08:53,917 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 22:08:53,917 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-22 22:08:53,917 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:08:53,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-22 22:08:53,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-07-22 22:08:53,918 INFO L87 Difference]: Start difference. First operand 179 states and 243 transitions. Second operand has 10 states, 9 states have (on average 5.111111111111111) internal successors, (46), 6 states have internal predecessors, (46), 2 states have call successors, (16), 4 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 1 states have call successors, (15) [2022-07-22 22:08:54,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 22:08:54,475 INFO L93 Difference]: Finished difference Result 198 states and 273 transitions. [2022-07-22 22:08:54,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-22 22:08:54,476 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 5.111111111111111) internal successors, (46), 6 states have internal predecessors, (46), 2 states have call successors, (16), 4 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 1 states have call successors, (15) Word has length 120 [2022-07-22 22:08:54,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 22:08:54,477 INFO L225 Difference]: With dead ends: 198 [2022-07-22 22:08:54,477 INFO L226 Difference]: Without dead ends: 196 [2022-07-22 22:08:54,477 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2022-07-22 22:08:54,477 INFO L413 NwaCegarLoop]: 213 mSDtfsCounter, 141 mSDsluCounter, 753 mSDsCounter, 0 mSdLazyCounter, 780 mSolverCounterSat, 124 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 147 SdHoareTripleChecker+Valid, 966 SdHoareTripleChecker+Invalid, 904 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 124 IncrementalHoareTripleChecker+Valid, 780 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-22 22:08:54,478 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [147 Valid, 966 Invalid, 904 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [124 Valid, 780 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-22 22:08:54,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2022-07-22 22:08:54,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 188. [2022-07-22 22:08:54,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 188 states, 117 states have (on average 1.1794871794871795) internal successors, (138), 119 states have internal predecessors, (138), 57 states have call successors, (57), 13 states have call predecessors, (57), 13 states have return successors, (67), 55 states have call predecessors, (67), 56 states have call successors, (67) [2022-07-22 22:08:54,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 262 transitions. [2022-07-22 22:08:54,487 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 262 transitions. Word has length 120 [2022-07-22 22:08:54,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 22:08:54,488 INFO L495 AbstractCegarLoop]: Abstraction has 188 states and 262 transitions. [2022-07-22 22:08:54,488 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 5.111111111111111) internal successors, (46), 6 states have internal predecessors, (46), 2 states have call successors, (16), 4 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 1 states have call successors, (15) [2022-07-22 22:08:54,488 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 262 transitions. [2022-07-22 22:08:54,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-07-22 22:08:54,489 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:08:54,489 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 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] [2022-07-22 22:08:54,489 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-22 22:08:54,489 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:08:54,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:08:54,490 INFO L85 PathProgramCache]: Analyzing trace with hash -1437147720, now seen corresponding path program 1 times [2022-07-22 22:08:54,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:08:54,490 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [293988753] [2022-07-22 22:08:54,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:08:54,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:08:54,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:08:54,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 22:08:54,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:08:54,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-22 22:08:54,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:08:54,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 22:08:54,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:08:54,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:08:54,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:08:54,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 22:08:54,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:08:54,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:08:54,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:08:54,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-22 22:08:54,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:08:54,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-22 22:08:54,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:08:54,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-22 22:08:54,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:08:54,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-07-22 22:08:54,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:08:54,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-22 22:08:54,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:08:54,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-22 22:08:54,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:08:54,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-07-22 22:08:54,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:08:54,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-22 22:08:54,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:08:54,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-07-22 22:08:54,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:08:54,878 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2022-07-22 22:08:54,878 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:08:54,878 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [293988753] [2022-07-22 22:08:54,878 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [293988753] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 22:08:54,878 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 22:08:54,879 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 22:08:54,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1871023086] [2022-07-22 22:08:54,879 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 22:08:54,879 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 22:08:54,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:08:54,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 22:08:54,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-22 22:08:54,880 INFO L87 Difference]: Start difference. First operand 188 states and 262 transitions. Second operand has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 5 states have internal predecessors, (55), 2 states have call successors, (16), 4 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 1 states have call successors, (15) [2022-07-22 22:08:55,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 22:08:55,391 INFO L93 Difference]: Finished difference Result 395 states and 567 transitions. [2022-07-22 22:08:55,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-22 22:08:55,400 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 5 states have internal predecessors, (55), 2 states have call successors, (16), 4 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 1 states have call successors, (15) Word has length 124 [2022-07-22 22:08:55,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 22:08:55,401 INFO L225 Difference]: With dead ends: 395 [2022-07-22 22:08:55,402 INFO L226 Difference]: Without dead ends: 214 [2022-07-22 22:08:55,402 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2022-07-22 22:08:55,403 INFO L413 NwaCegarLoop]: 210 mSDtfsCounter, 194 mSDsluCounter, 369 mSDsCounter, 0 mSdLazyCounter, 446 mSolverCounterSat, 122 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 199 SdHoareTripleChecker+Valid, 579 SdHoareTripleChecker+Invalid, 568 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 122 IncrementalHoareTripleChecker+Valid, 446 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-22 22:08:55,403 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [199 Valid, 579 Invalid, 568 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [122 Valid, 446 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-22 22:08:55,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2022-07-22 22:08:55,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 191. [2022-07-22 22:08:55,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 191 states, 120 states have (on average 1.175) internal successors, (141), 122 states have internal predecessors, (141), 57 states have call successors, (57), 13 states have call predecessors, (57), 13 states have return successors, (67), 55 states have call predecessors, (67), 56 states have call successors, (67) [2022-07-22 22:08:55,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 265 transitions. [2022-07-22 22:08:55,413 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 265 transitions. Word has length 124 [2022-07-22 22:08:55,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 22:08:55,413 INFO L495 AbstractCegarLoop]: Abstraction has 191 states and 265 transitions. [2022-07-22 22:08:55,414 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 5 states have internal predecessors, (55), 2 states have call successors, (16), 4 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 1 states have call successors, (15) [2022-07-22 22:08:55,414 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 265 transitions. [2022-07-22 22:08:55,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-07-22 22:08:55,415 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:08:55,415 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 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] [2022-07-22 22:08:55,415 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-22 22:08:55,415 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:08:55,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:08:55,416 INFO L85 PathProgramCache]: Analyzing trace with hash -1178982282, now seen corresponding path program 1 times [2022-07-22 22:08:55,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:08:55,416 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1535119480] [2022-07-22 22:08:55,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:08:55,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:08:55,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:08:55,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 22:08:55,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:08:55,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-22 22:08:55,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:08:55,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 22:08:55,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:08:55,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:08:55,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:08:55,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 22:08:55,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:08:55,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:08:55,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:08:55,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-22 22:08:55,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:08:55,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-22 22:08:55,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:08:55,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-22 22:08:55,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:08:55,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-07-22 22:08:55,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:08:55,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-22 22:08:55,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:08:55,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-22 22:08:55,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:08:55,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-07-22 22:08:55,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:08:55,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-22 22:08:55,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:08:55,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-07-22 22:08:55,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:08:55,772 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2022-07-22 22:08:55,772 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:08:55,772 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1535119480] [2022-07-22 22:08:55,772 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1535119480] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 22:08:55,772 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 22:08:55,773 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-22 22:08:55,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1152506845] [2022-07-22 22:08:55,773 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 22:08:55,773 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-22 22:08:55,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:08:55,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-22 22:08:55,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2022-07-22 22:08:55,774 INFO L87 Difference]: Start difference. First operand 191 states and 265 transitions. Second operand has 11 states, 10 states have (on average 5.6) internal successors, (56), 9 states have internal predecessors, (56), 3 states have call successors, (16), 4 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-07-22 22:08:56,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 22:08:56,559 INFO L93 Difference]: Finished difference Result 356 states and 516 transitions. [2022-07-22 22:08:56,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-22 22:08:56,559 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 5.6) internal successors, (56), 9 states have internal predecessors, (56), 3 states have call successors, (16), 4 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 124 [2022-07-22 22:08:56,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 22:08:56,562 INFO L225 Difference]: With dead ends: 356 [2022-07-22 22:08:56,562 INFO L226 Difference]: Without dead ends: 261 [2022-07-22 22:08:56,563 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=177, Unknown=0, NotChecked=0, Total=240 [2022-07-22 22:08:56,563 INFO L413 NwaCegarLoop]: 266 mSDtfsCounter, 248 mSDsluCounter, 631 mSDsCounter, 0 mSdLazyCounter, 750 mSolverCounterSat, 138 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 280 SdHoareTripleChecker+Valid, 897 SdHoareTripleChecker+Invalid, 888 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 138 IncrementalHoareTripleChecker+Valid, 750 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-22 22:08:56,564 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [280 Valid, 897 Invalid, 888 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [138 Valid, 750 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-22 22:08:56,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 261 states. [2022-07-22 22:08:56,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 261 to 201. [2022-07-22 22:08:56,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 201 states, 129 states have (on average 1.1705426356589148) internal successors, (151), 132 states have internal predecessors, (151), 57 states have call successors, (57), 13 states have call predecessors, (57), 14 states have return successors, (78), 55 states have call predecessors, (78), 56 states have call successors, (78) [2022-07-22 22:08:56,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 286 transitions. [2022-07-22 22:08:56,586 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 286 transitions. Word has length 124 [2022-07-22 22:08:56,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 22:08:56,586 INFO L495 AbstractCegarLoop]: Abstraction has 201 states and 286 transitions. [2022-07-22 22:08:56,586 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 5.6) internal successors, (56), 9 states have internal predecessors, (56), 3 states have call successors, (16), 4 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-07-22 22:08:56,586 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 286 transitions. [2022-07-22 22:08:56,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-07-22 22:08:56,588 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:08:56,588 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 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] [2022-07-22 22:08:56,589 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-22 22:08:56,589 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:08:56,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:08:56,589 INFO L85 PathProgramCache]: Analyzing trace with hash 1836121336, now seen corresponding path program 1 times [2022-07-22 22:08:56,589 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:08:56,589 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [143530837] [2022-07-22 22:08:56,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:08:56,590 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:08:56,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:08:57,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 22:08:57,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:08:57,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-22 22:08:57,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:08:57,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 22:08:57,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:08:57,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:08:57,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:08:57,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 22:08:57,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:08:57,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:08:57,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:08:57,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-22 22:08:57,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:08:57,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-22 22:08:57,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:08:57,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-22 22:08:57,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:08:57,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-07-22 22:08:57,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:08:57,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-22 22:08:57,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:08:57,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-22 22:08:57,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:08:57,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-07-22 22:08:57,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:08:57,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-22 22:08:57,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:08:57,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-07-22 22:08:57,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:08:57,306 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 10 proven. 20 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2022-07-22 22:08:57,306 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:08:57,306 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [143530837] [2022-07-22 22:08:57,306 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [143530837] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 22:08:57,306 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [329002097] [2022-07-22 22:08:57,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:08:57,307 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:08:57,307 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 22:08:57,308 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 22:08:57,309 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-07-22 22:08:57,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:08:57,788 INFO L263 TraceCheckSpWp]: Trace formula consists of 2824 conjuncts, 27 conjunts are in the unsatisfiable core [2022-07-22 22:08:57,792 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 22:08:57,832 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:08:57,833 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:08:57,833 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:08:57,834 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 30 [2022-07-22 22:08:58,128 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2022-07-22 22:08:58,129 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 22:08:58,129 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [329002097] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 22:08:58,129 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 22:08:58,129 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [16] total 23 [2022-07-22 22:08:58,129 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1671330245] [2022-07-22 22:08:58,130 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 22:08:58,130 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-22 22:08:58,130 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:08:58,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-22 22:08:58,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=450, Unknown=0, NotChecked=0, Total=506 [2022-07-22 22:08:58,131 INFO L87 Difference]: Start difference. First operand 201 states and 286 transitions. Second operand has 9 states, 8 states have (on average 7.0) internal successors, (56), 8 states have internal predecessors, (56), 3 states have call successors, (16), 3 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-07-22 22:08:58,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 22:08:58,186 INFO L93 Difference]: Finished difference Result 316 states and 444 transitions. [2022-07-22 22:08:58,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-22 22:08:58,186 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 7.0) internal successors, (56), 8 states have internal predecessors, (56), 3 states have call successors, (16), 3 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 124 [2022-07-22 22:08:58,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 22:08:58,189 INFO L225 Difference]: With dead ends: 316 [2022-07-22 22:08:58,189 INFO L226 Difference]: Without dead ends: 208 [2022-07-22 22:08:58,190 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=62, Invalid=490, Unknown=0, NotChecked=0, Total=552 [2022-07-22 22:08:58,190 INFO L413 NwaCegarLoop]: 240 mSDtfsCounter, 13 mSDsluCounter, 615 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 855 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 61 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 22:08:58,191 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 855 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 11 Invalid, 0 Unknown, 61 Unchecked, 0.0s Time] [2022-07-22 22:08:58,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2022-07-22 22:08:58,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 206. [2022-07-22 22:08:58,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 206 states, 134 states have (on average 1.164179104477612) internal successors, (156), 137 states have internal predecessors, (156), 57 states have call successors, (57), 13 states have call predecessors, (57), 14 states have return successors, (78), 55 states have call predecessors, (78), 56 states have call successors, (78) [2022-07-22 22:08:58,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 291 transitions. [2022-07-22 22:08:58,203 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 291 transitions. Word has length 124 [2022-07-22 22:08:58,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 22:08:58,205 INFO L495 AbstractCegarLoop]: Abstraction has 206 states and 291 transitions. [2022-07-22 22:08:58,205 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 7.0) internal successors, (56), 8 states have internal predecessors, (56), 3 states have call successors, (16), 3 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-07-22 22:08:58,205 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 291 transitions. [2022-07-22 22:08:58,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-07-22 22:08:58,206 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:08:58,206 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 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] [2022-07-22 22:08:58,235 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-07-22 22:08:58,419 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-07-22 22:08:58,419 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:08:58,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:08:58,420 INFO L85 PathProgramCache]: Analyzing trace with hash -10392004, now seen corresponding path program 1 times [2022-07-22 22:08:58,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:08:58,420 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2055281230] [2022-07-22 22:08:58,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:08:58,420 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:08:58,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:08:58,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 22:08:58,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:08:58,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-22 22:08:58,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:08:58,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 22:08:58,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:08:58,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:08:58,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:08:58,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 22:08:58,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:08:58,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:08:58,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:08:58,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-22 22:08:58,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:08:58,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-22 22:08:58,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:08:58,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-22 22:08:58,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:08:58,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-07-22 22:08:58,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:08:58,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-22 22:08:58,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:08:58,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-22 22:08:58,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:08:58,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-07-22 22:08:58,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:08:58,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-22 22:08:58,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:08:58,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-07-22 22:08:58,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:08:58,978 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 10 proven. 20 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2022-07-22 22:08:58,978 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:08:58,978 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2055281230] [2022-07-22 22:08:58,978 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2055281230] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 22:08:58,978 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1304128910] [2022-07-22 22:08:58,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:08:58,979 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:08:58,979 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 22:08:58,980 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 22:08:58,981 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-07-22 22:08:59,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:08:59,457 INFO L263 TraceCheckSpWp]: Trace formula consists of 2826 conjuncts, 30 conjunts are in the unsatisfiable core [2022-07-22 22:08:59,460 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 22:08:59,529 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-07-22 22:08:59,725 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 68 proven. 0 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2022-07-22 22:08:59,725 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 22:08:59,726 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1304128910] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 22:08:59,726 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 22:08:59,726 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [16] total 25 [2022-07-22 22:08:59,726 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2066874411] [2022-07-22 22:08:59,726 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 22:08:59,726 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-07-22 22:08:59,727 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:08:59,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-07-22 22:08:59,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=524, Unknown=0, NotChecked=0, Total=600 [2022-07-22 22:08:59,727 INFO L87 Difference]: Start difference. First operand 206 states and 291 transitions. Second operand has 13 states, 12 states have (on average 5.333333333333333) internal successors, (64), 10 states have internal predecessors, (64), 5 states have call successors, (16), 3 states have call predecessors, (16), 5 states have return successors, (15), 6 states have call predecessors, (15), 5 states have call successors, (15) [2022-07-22 22:08:59,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 22:08:59,879 INFO L93 Difference]: Finished difference Result 422 states and 588 transitions. [2022-07-22 22:08:59,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-22 22:08:59,880 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 5.333333333333333) internal successors, (64), 10 states have internal predecessors, (64), 5 states have call successors, (16), 3 states have call predecessors, (16), 5 states have return successors, (15), 6 states have call predecessors, (15), 5 states have call successors, (15) Word has length 124 [2022-07-22 22:08:59,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 22:08:59,881 INFO L225 Difference]: With dead ends: 422 [2022-07-22 22:08:59,881 INFO L226 Difference]: Without dead ends: 219 [2022-07-22 22:08:59,882 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 141 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 119 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=82, Invalid=568, Unknown=0, NotChecked=0, Total=650 [2022-07-22 22:08:59,882 INFO L413 NwaCegarLoop]: 212 mSDtfsCounter, 75 mSDsluCounter, 1106 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 121 SdHoareTripleChecker+Valid, 1318 SdHoareTripleChecker+Invalid, 155 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 47 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-22 22:08:59,883 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [121 Valid, 1318 Invalid, 155 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 106 Invalid, 0 Unknown, 47 Unchecked, 0.1s Time] [2022-07-22 22:08:59,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2022-07-22 22:08:59,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 213. [2022-07-22 22:08:59,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 213 states, 141 states have (on average 1.1702127659574468) internal successors, (165), 143 states have internal predecessors, (165), 57 states have call successors, (57), 14 states have call predecessors, (57), 14 states have return successors, (77), 55 states have call predecessors, (77), 56 states have call successors, (77) [2022-07-22 22:08:59,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 299 transitions. [2022-07-22 22:08:59,893 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 299 transitions. Word has length 124 [2022-07-22 22:08:59,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 22:08:59,893 INFO L495 AbstractCegarLoop]: Abstraction has 213 states and 299 transitions. [2022-07-22 22:08:59,894 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 5.333333333333333) internal successors, (64), 10 states have internal predecessors, (64), 5 states have call successors, (16), 3 states have call predecessors, (16), 5 states have return successors, (15), 6 states have call predecessors, (15), 5 states have call successors, (15) [2022-07-22 22:08:59,894 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 299 transitions. [2022-07-22 22:08:59,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2022-07-22 22:08:59,895 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:08:59,895 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 3, 3, 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] [2022-07-22 22:08:59,918 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-07-22 22:09:00,107 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-07-22 22:09:00,107 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:09:00,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:09:00,108 INFO L85 PathProgramCache]: Analyzing trace with hash 1190017078, now seen corresponding path program 1 times [2022-07-22 22:09:00,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:09:00,108 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2136694788] [2022-07-22 22:09:00,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:09:00,108 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:09:00,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:00,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 22:09:00,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:00,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-22 22:09:00,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:00,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 22:09:00,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:00,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:09:00,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:00,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 22:09:00,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:00,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:09:00,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:00,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-22 22:09:00,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:00,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-22 22:09:00,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:00,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-07-22 22:09:00,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:00,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-22 22:09:00,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:00,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-22 22:09:00,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:00,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-07-22 22:09:00,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:00,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-07-22 22:09:00,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:00,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-07-22 22:09:00,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:00,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-07-22 22:09:00,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:00,371 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 6 proven. 22 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2022-07-22 22:09:00,371 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:09:00,371 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2136694788] [2022-07-22 22:09:00,371 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2136694788] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 22:09:00,371 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [735336706] [2022-07-22 22:09:00,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:09:00,372 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:09:00,372 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 22:09:00,373 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 22:09:00,389 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-07-22 22:09:00,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:00,844 INFO L263 TraceCheckSpWp]: Trace formula consists of 2833 conjuncts, 50 conjunts are in the unsatisfiable core [2022-07-22 22:09:00,848 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 22:09:00,917 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-07-22 22:09:01,121 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:09:01,122 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:09:01,123 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:09:01,123 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 32 [2022-07-22 22:09:01,126 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 14 [2022-07-22 22:09:01,447 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 108 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-07-22 22:09:01,447 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 22:09:01,448 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [735336706] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 22:09:01,448 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 22:09:01,448 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [11] total 24 [2022-07-22 22:09:01,448 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1250851674] [2022-07-22 22:09:01,448 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 22:09:01,448 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-07-22 22:09:01,449 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:09:01,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-07-22 22:09:01,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=495, Unknown=0, NotChecked=0, Total=552 [2022-07-22 22:09:01,449 INFO L87 Difference]: Start difference. First operand 213 states and 299 transitions. Second operand has 15 states, 15 states have (on average 5.266666666666667) internal successors, (79), 14 states have internal predecessors, (79), 6 states have call successors, (16), 3 states have call predecessors, (16), 6 states have return successors, (15), 7 states have call predecessors, (15), 6 states have call successors, (15) [2022-07-22 22:09:01,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 22:09:01,726 INFO L93 Difference]: Finished difference Result 514 states and 750 transitions. [2022-07-22 22:09:01,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-22 22:09:01,728 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 5.266666666666667) internal successors, (79), 14 states have internal predecessors, (79), 6 states have call successors, (16), 3 states have call predecessors, (16), 6 states have return successors, (15), 7 states have call predecessors, (15), 6 states have call successors, (15) Word has length 128 [2022-07-22 22:09:01,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 22:09:01,730 INFO L225 Difference]: With dead ends: 514 [2022-07-22 22:09:01,730 INFO L226 Difference]: Without dead ends: 360 [2022-07-22 22:09:01,731 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 134 SyntacticMatches, 10 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=73, Invalid=629, Unknown=0, NotChecked=0, Total=702 [2022-07-22 22:09:01,731 INFO L413 NwaCegarLoop]: 275 mSDtfsCounter, 85 mSDsluCounter, 1838 mSDsCounter, 0 mSdLazyCounter, 214 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 128 SdHoareTripleChecker+Valid, 2113 SdHoareTripleChecker+Invalid, 372 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 214 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 154 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-22 22:09:01,732 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [128 Valid, 2113 Invalid, 372 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 214 Invalid, 0 Unknown, 154 Unchecked, 0.2s Time] [2022-07-22 22:09:01,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 360 states. [2022-07-22 22:09:01,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 360 to 263. [2022-07-22 22:09:01,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 263 states, 182 states have (on average 1.1868131868131868) internal successors, (216), 185 states have internal predecessors, (216), 62 states have call successors, (62), 17 states have call predecessors, (62), 18 states have return successors, (88), 60 states have call predecessors, (88), 61 states have call successors, (88) [2022-07-22 22:09:01,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 263 states to 263 states and 366 transitions. [2022-07-22 22:09:01,747 INFO L78 Accepts]: Start accepts. Automaton has 263 states and 366 transitions. Word has length 128 [2022-07-22 22:09:01,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 22:09:01,747 INFO L495 AbstractCegarLoop]: Abstraction has 263 states and 366 transitions. [2022-07-22 22:09:01,747 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 5.266666666666667) internal successors, (79), 14 states have internal predecessors, (79), 6 states have call successors, (16), 3 states have call predecessors, (16), 6 states have return successors, (15), 7 states have call predecessors, (15), 6 states have call successors, (15) [2022-07-22 22:09:01,747 INFO L276 IsEmpty]: Start isEmpty. Operand 263 states and 366 transitions. [2022-07-22 22:09:01,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2022-07-22 22:09:01,748 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:09:01,749 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 3, 3, 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] [2022-07-22 22:09:01,781 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-07-22 22:09:01,963 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-07-22 22:09:01,963 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:09:01,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:09:01,964 INFO L85 PathProgramCache]: Analyzing trace with hash 955701423, now seen corresponding path program 1 times [2022-07-22 22:09:01,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:09:01,964 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1592649989] [2022-07-22 22:09:01,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:09:01,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:09:02,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:02,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 22:09:02,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:02,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-22 22:09:02,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:02,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 22:09:02,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:02,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:09:02,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:02,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 22:09:02,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:02,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:09:02,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:02,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-22 22:09:02,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:02,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-22 22:09:02,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:02,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-22 22:09:02,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:02,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-22 22:09:02,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:02,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-22 22:09:02,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:02,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-22 22:09:02,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:02,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-07-22 22:09:02,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:02,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-07-22 22:09:02,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:02,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-07-22 22:09:02,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:02,146 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2022-07-22 22:09:02,147 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:09:02,147 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1592649989] [2022-07-22 22:09:02,147 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1592649989] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 22:09:02,147 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [442053197] [2022-07-22 22:09:02,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:09:02,147 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:09:02,148 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 22:09:02,149 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 22:09:02,150 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-07-22 22:09:02,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:02,624 INFO L263 TraceCheckSpWp]: Trace formula consists of 2843 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-22 22:09:02,627 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 22:09:02,637 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 59 proven. 0 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2022-07-22 22:09:02,637 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 22:09:02,638 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [442053197] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 22:09:02,638 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 22:09:02,638 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 6 [2022-07-22 22:09:02,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1894681379] [2022-07-22 22:09:02,638 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 22:09:02,639 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 22:09:02,639 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:09:02,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 22:09:02,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-22 22:09:02,640 INFO L87 Difference]: Start difference. First operand 263 states and 366 transitions. Second operand has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-07-22 22:09:02,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 22:09:02,666 INFO L93 Difference]: Finished difference Result 525 states and 750 transitions. [2022-07-22 22:09:02,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 22:09:02,667 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 130 [2022-07-22 22:09:02,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 22:09:02,669 INFO L225 Difference]: With dead ends: 525 [2022-07-22 22:09:02,669 INFO L226 Difference]: Without dead ends: 269 [2022-07-22 22:09:02,671 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 160 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-07-22 22:09:02,672 INFO L413 NwaCegarLoop]: 226 mSDtfsCounter, 9 mSDsluCounter, 446 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 672 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 22:09:02,673 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 672 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 22:09:02,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 269 states. [2022-07-22 22:09:02,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 269 to 252. [2022-07-22 22:09:02,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 252 states, 171 states have (on average 1.1695906432748537) internal successors, (200), 174 states have internal predecessors, (200), 62 states have call successors, (62), 17 states have call predecessors, (62), 18 states have return successors, (85), 60 states have call predecessors, (85), 61 states have call successors, (85) [2022-07-22 22:09:02,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252 states to 252 states and 347 transitions. [2022-07-22 22:09:02,688 INFO L78 Accepts]: Start accepts. Automaton has 252 states and 347 transitions. Word has length 130 [2022-07-22 22:09:02,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 22:09:02,688 INFO L495 AbstractCegarLoop]: Abstraction has 252 states and 347 transitions. [2022-07-22 22:09:02,688 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-07-22 22:09:02,688 INFO L276 IsEmpty]: Start isEmpty. Operand 252 states and 347 transitions. [2022-07-22 22:09:02,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2022-07-22 22:09:02,690 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:09:02,690 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 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] [2022-07-22 22:09:02,713 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-07-22 22:09:02,901 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-07-22 22:09:02,901 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:09:02,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:09:02,901 INFO L85 PathProgramCache]: Analyzing trace with hash 78959785, now seen corresponding path program 1 times [2022-07-22 22:09:02,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:09:02,902 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [742564968] [2022-07-22 22:09:02,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:09:02,902 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:09:03,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:03,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 22:09:03,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:03,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-22 22:09:03,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:03,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 22:09:03,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:03,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:09:03,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:03,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 22:09:03,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:03,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:09:03,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:03,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-22 22:09:03,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:03,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-22 22:09:03,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:03,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-22 22:09:03,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:03,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-22 22:09:03,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:03,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-22 22:09:03,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:03,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-22 22:09:03,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:03,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-07-22 22:09:03,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:03,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-07-22 22:09:03,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:03,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-07-22 22:09:03,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:03,412 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 20 proven. 10 refuted. 0 times theorem prover too weak. 103 trivial. 0 not checked. [2022-07-22 22:09:03,413 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:09:03,413 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [742564968] [2022-07-22 22:09:03,413 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [742564968] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 22:09:03,413 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1403358542] [2022-07-22 22:09:03,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:09:03,413 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:09:03,413 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 22:09:03,414 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 22:09:03,416 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-07-22 22:09:03,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:03,886 INFO L263 TraceCheckSpWp]: Trace formula consists of 2840 conjuncts, 56 conjunts are in the unsatisfiable core [2022-07-22 22:09:03,893 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 22:09:03,947 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-07-22 22:09:04,210 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:09:04,210 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 23 [2022-07-22 22:09:04,213 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 16 [2022-07-22 22:09:04,604 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 102 proven. 18 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-07-22 22:09:04,605 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 22:09:04,997 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 10 proven. 44 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2022-07-22 22:09:04,997 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1403358542] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-22 22:09:04,997 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-22 22:09:04,997 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 11] total 36 [2022-07-22 22:09:04,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1169883783] [2022-07-22 22:09:04,997 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-22 22:09:04,998 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-07-22 22:09:04,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:09:04,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-07-22 22:09:04,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=1152, Unknown=0, NotChecked=0, Total=1260 [2022-07-22 22:09:04,999 INFO L87 Difference]: Start difference. First operand 252 states and 347 transitions. Second operand has 36 states, 35 states have (on average 4.571428571428571) internal successors, (160), 33 states have internal predecessors, (160), 12 states have call successors, (40), 5 states have call predecessors, (40), 9 states have return successors, (39), 12 states have call predecessors, (39), 12 states have call successors, (39) [2022-07-22 22:09:12,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 22:09:12,425 INFO L93 Difference]: Finished difference Result 820 states and 1259 transitions. [2022-07-22 22:09:12,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2022-07-22 22:09:12,425 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 35 states have (on average 4.571428571428571) internal successors, (160), 33 states have internal predecessors, (160), 12 states have call successors, (40), 5 states have call predecessors, (40), 9 states have return successors, (39), 12 states have call predecessors, (39), 12 states have call successors, (39) Word has length 130 [2022-07-22 22:09:12,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 22:09:12,428 INFO L225 Difference]: With dead ends: 820 [2022-07-22 22:09:12,429 INFO L226 Difference]: Without dead ends: 661 [2022-07-22 22:09:12,431 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 368 GetRequests, 273 SyntacticMatches, 9 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2163 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=757, Invalid=6899, Unknown=0, NotChecked=0, Total=7656 [2022-07-22 22:09:12,431 INFO L413 NwaCegarLoop]: 367 mSDtfsCounter, 465 mSDsluCounter, 3555 mSDsCounter, 0 mSdLazyCounter, 7795 mSolverCounterSat, 406 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 550 SdHoareTripleChecker+Valid, 3922 SdHoareTripleChecker+Invalid, 9073 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 406 IncrementalHoareTripleChecker+Valid, 7795 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 872 IncrementalHoareTripleChecker+Unchecked, 5.5s IncrementalHoareTripleChecker+Time [2022-07-22 22:09:12,431 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [550 Valid, 3922 Invalid, 9073 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [406 Valid, 7795 Invalid, 0 Unknown, 872 Unchecked, 5.5s Time] [2022-07-22 22:09:12,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 661 states. [2022-07-22 22:09:12,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 661 to 478. [2022-07-22 22:09:12,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 478 states, 319 states have (on average 1.1755485893416928) internal successors, (375), 327 states have internal predecessors, (375), 129 states have call successors, (129), 23 states have call predecessors, (129), 29 states have return successors, (184), 127 states have call predecessors, (184), 128 states have call successors, (184) [2022-07-22 22:09:12,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 478 states to 478 states and 688 transitions. [2022-07-22 22:09:12,461 INFO L78 Accepts]: Start accepts. Automaton has 478 states and 688 transitions. Word has length 130 [2022-07-22 22:09:12,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 22:09:12,462 INFO L495 AbstractCegarLoop]: Abstraction has 478 states and 688 transitions. [2022-07-22 22:09:12,462 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 35 states have (on average 4.571428571428571) internal successors, (160), 33 states have internal predecessors, (160), 12 states have call successors, (40), 5 states have call predecessors, (40), 9 states have return successors, (39), 12 states have call predecessors, (39), 12 states have call successors, (39) [2022-07-22 22:09:12,462 INFO L276 IsEmpty]: Start isEmpty. Operand 478 states and 688 transitions. [2022-07-22 22:09:12,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2022-07-22 22:09:12,464 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:09:12,464 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 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] [2022-07-22 22:09:12,491 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-07-22 22:09:12,679 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-07-22 22:09:12,679 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:09:12,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:09:12,679 INFO L85 PathProgramCache]: Analyzing trace with hash 1718133808, now seen corresponding path program 2 times [2022-07-22 22:09:12,679 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:09:12,679 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1048371567] [2022-07-22 22:09:12,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:09:12,679 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:09:12,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:12,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 22:09:12,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:12,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-22 22:09:12,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:12,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 22:09:12,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:12,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:09:12,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:12,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 22:09:12,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:12,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:09:12,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:12,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-22 22:09:12,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:12,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-22 22:09:12,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:12,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-07-22 22:09:12,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:12,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-22 22:09:12,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:12,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-22 22:09:12,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:12,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-07-22 22:09:12,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:12,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-07-22 22:09:12,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:12,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-07-22 22:09:12,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:12,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-07-22 22:09:12,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:12,955 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 6 proven. 23 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2022-07-22 22:09:12,956 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:09:12,956 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1048371567] [2022-07-22 22:09:12,956 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1048371567] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 22:09:12,956 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1115165821] [2022-07-22 22:09:12,956 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-22 22:09:12,956 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:09:12,956 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 22:09:12,957 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 22:09:12,959 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-07-22 22:09:13,378 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-07-22 22:09:13,378 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-22 22:09:13,385 INFO L263 TraceCheckSpWp]: Trace formula consists of 2411 conjuncts, 25 conjunts are in the unsatisfiable core [2022-07-22 22:09:13,404 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 22:09:13,417 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:09:13,418 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:09:13,418 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:09:13,420 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 26 [2022-07-22 22:09:13,633 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2022-07-22 22:09:13,634 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 22:09:13,634 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1115165821] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 22:09:13,634 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 22:09:13,634 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [11] total 18 [2022-07-22 22:09:13,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1879192774] [2022-07-22 22:09:13,634 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 22:09:13,634 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-22 22:09:13,634 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:09:13,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-22 22:09:13,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=266, Unknown=0, NotChecked=0, Total=306 [2022-07-22 22:09:13,635 INFO L87 Difference]: Start difference. First operand 478 states and 688 transitions. Second operand has 9 states, 8 states have (on average 7.625) internal successors, (61), 8 states have internal predecessors, (61), 3 states have call successors, (16), 3 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-07-22 22:09:13,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 22:09:13,670 INFO L93 Difference]: Finished difference Result 602 states and 856 transitions. [2022-07-22 22:09:13,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-22 22:09:13,671 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 7.625) internal successors, (61), 8 states have internal predecessors, (61), 3 states have call successors, (16), 3 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 132 [2022-07-22 22:09:13,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 22:09:13,673 INFO L225 Difference]: With dead ends: 602 [2022-07-22 22:09:13,673 INFO L226 Difference]: Without dead ends: 495 [2022-07-22 22:09:13,674 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 153 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=266, Unknown=0, NotChecked=0, Total=306 [2022-07-22 22:09:13,674 INFO L413 NwaCegarLoop]: 243 mSDtfsCounter, 25 mSDsluCounter, 838 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 1081 SdHoareTripleChecker+Invalid, 144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 140 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 22:09:13,675 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 1081 Invalid, 144 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 140 Unchecked, 0.0s Time] [2022-07-22 22:09:13,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 495 states. [2022-07-22 22:09:13,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 495 to 495. [2022-07-22 22:09:13,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 495 states, 335 states have (on average 1.173134328358209) internal successors, (393), 343 states have internal predecessors, (393), 129 states have call successors, (129), 24 states have call predecessors, (129), 30 states have return successors, (186), 127 states have call predecessors, (186), 128 states have call successors, (186) [2022-07-22 22:09:13,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 495 states to 495 states and 708 transitions. [2022-07-22 22:09:13,702 INFO L78 Accepts]: Start accepts. Automaton has 495 states and 708 transitions. Word has length 132 [2022-07-22 22:09:13,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 22:09:13,702 INFO L495 AbstractCegarLoop]: Abstraction has 495 states and 708 transitions. [2022-07-22 22:09:13,702 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 7.625) internal successors, (61), 8 states have internal predecessors, (61), 3 states have call successors, (16), 3 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-07-22 22:09:13,702 INFO L276 IsEmpty]: Start isEmpty. Operand 495 states and 708 transitions. [2022-07-22 22:09:13,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2022-07-22 22:09:13,705 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:09:13,705 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 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] [2022-07-22 22:09:13,724 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-07-22 22:09:13,919 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-07-22 22:09:13,919 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:09:13,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:09:13,919 INFO L85 PathProgramCache]: Analyzing trace with hash 1976299246, now seen corresponding path program 1 times [2022-07-22 22:09:13,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:09:13,919 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [791336714] [2022-07-22 22:09:13,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:09:13,920 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:09:14,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:14,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 22:09:14,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:14,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-22 22:09:14,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:14,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 22:09:14,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:14,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:09:14,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:14,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 22:09:14,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:14,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:09:14,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:14,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-22 22:09:14,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:14,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-22 22:09:14,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:14,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-07-22 22:09:14,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:14,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-22 22:09:14,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:14,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-22 22:09:14,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:14,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-07-22 22:09:14,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:14,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-07-22 22:09:14,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:14,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-07-22 22:09:14,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:14,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-07-22 22:09:14,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:14,182 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 6 proven. 23 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2022-07-22 22:09:14,183 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:09:14,183 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [791336714] [2022-07-22 22:09:14,183 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [791336714] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 22:09:14,183 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [664383413] [2022-07-22 22:09:14,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:09:14,183 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:09:14,183 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 22:09:14,185 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 22:09:14,186 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-07-22 22:09:14,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:14,680 INFO L263 TraceCheckSpWp]: Trace formula consists of 2835 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-22 22:09:14,684 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 22:09:14,786 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2022-07-22 22:09:14,787 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 22:09:14,787 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [664383413] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 22:09:14,787 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 22:09:14,787 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [11] total 14 [2022-07-22 22:09:14,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1085057162] [2022-07-22 22:09:14,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 22:09:14,787 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 22:09:14,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:09:14,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 22:09:14,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2022-07-22 22:09:14,788 INFO L87 Difference]: Start difference. First operand 495 states and 708 transitions. Second operand has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 1 states have call successors, (15) [2022-07-22 22:09:14,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 22:09:14,993 INFO L93 Difference]: Finished difference Result 942 states and 1377 transitions. [2022-07-22 22:09:14,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-22 22:09:14,993 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 1 states have call successors, (15) Word has length 132 [2022-07-22 22:09:14,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 22:09:14,996 INFO L225 Difference]: With dead ends: 942 [2022-07-22 22:09:14,996 INFO L226 Difference]: Without dead ends: 480 [2022-07-22 22:09:14,998 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 158 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=204, Unknown=0, NotChecked=0, Total=240 [2022-07-22 22:09:14,998 INFO L413 NwaCegarLoop]: 242 mSDtfsCounter, 24 mSDsluCounter, 582 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 824 SdHoareTripleChecker+Invalid, 142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 49 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-22 22:09:14,998 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 824 Invalid, 142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 91 Invalid, 0 Unknown, 49 Unchecked, 0.1s Time] [2022-07-22 22:09:14,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 480 states. [2022-07-22 22:09:15,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 480 to 480. [2022-07-22 22:09:15,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 480 states, 321 states have (on average 1.1651090342679127) internal successors, (374), 328 states have internal predecessors, (374), 129 states have call successors, (129), 24 states have call predecessors, (129), 29 states have return successors, (184), 127 states have call predecessors, (184), 128 states have call successors, (184) [2022-07-22 22:09:15,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 480 states to 480 states and 687 transitions. [2022-07-22 22:09:15,024 INFO L78 Accepts]: Start accepts. Automaton has 480 states and 687 transitions. Word has length 132 [2022-07-22 22:09:15,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 22:09:15,024 INFO L495 AbstractCegarLoop]: Abstraction has 480 states and 687 transitions. [2022-07-22 22:09:15,024 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 1 states have call successors, (15) [2022-07-22 22:09:15,024 INFO L276 IsEmpty]: Start isEmpty. Operand 480 states and 687 transitions. [2022-07-22 22:09:15,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2022-07-22 22:09:15,026 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:09:15,026 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 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] [2022-07-22 22:09:15,065 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-07-22 22:09:15,248 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:09:15,248 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:09:15,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:09:15,248 INFO L85 PathProgramCache]: Analyzing trace with hash 768398248, now seen corresponding path program 1 times [2022-07-22 22:09:15,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:09:15,248 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [172588913] [2022-07-22 22:09:15,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:09:15,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:09:15,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:15,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 22:09:15,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:15,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-22 22:09:15,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:15,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 22:09:15,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:15,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:09:15,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:15,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 22:09:15,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:15,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:09:15,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:15,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-22 22:09:15,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:15,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-22 22:09:15,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:15,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-07-22 22:09:15,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:15,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-22 22:09:15,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:15,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-22 22:09:15,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:15,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-07-22 22:09:15,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:15,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-07-22 22:09:15,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:15,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-07-22 22:09:15,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:15,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-07-22 22:09:15,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:15,523 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 6 proven. 23 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2022-07-22 22:09:15,524 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:09:15,524 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [172588913] [2022-07-22 22:09:15,524 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [172588913] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 22:09:15,524 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [914983340] [2022-07-22 22:09:15,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:09:15,524 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:09:15,524 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 22:09:15,525 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 22:09:15,527 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-07-22 22:09:16,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:16,067 INFO L263 TraceCheckSpWp]: Trace formula consists of 2843 conjuncts, 24 conjunts are in the unsatisfiable core [2022-07-22 22:09:16,070 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 22:09:16,103 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 86 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-07-22 22:09:16,103 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 22:09:16,104 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [914983340] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 22:09:16,104 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 22:09:16,104 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [11] total 12 [2022-07-22 22:09:16,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1783751588] [2022-07-22 22:09:16,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 22:09:16,104 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-22 22:09:16,104 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:09:16,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-22 22:09:16,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2022-07-22 22:09:16,105 INFO L87 Difference]: Start difference. First operand 480 states and 687 transitions. Second operand has 9 states, 8 states have (on average 8.625) internal successors, (69), 8 states have internal predecessors, (69), 3 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2022-07-22 22:09:16,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 22:09:16,233 INFO L93 Difference]: Finished difference Result 881 states and 1254 transitions. [2022-07-22 22:09:16,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-22 22:09:16,234 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 8.625) internal successors, (69), 8 states have internal predecessors, (69), 3 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) Word has length 132 [2022-07-22 22:09:16,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 22:09:16,236 INFO L225 Difference]: With dead ends: 881 [2022-07-22 22:09:16,236 INFO L226 Difference]: Without dead ends: 409 [2022-07-22 22:09:16,237 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 158 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2022-07-22 22:09:16,238 INFO L413 NwaCegarLoop]: 224 mSDtfsCounter, 12 mSDsluCounter, 1510 mSDsCounter, 0 mSdLazyCounter, 155 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 1734 SdHoareTripleChecker+Invalid, 157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 155 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-22 22:09:16,238 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 1734 Invalid, 157 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 155 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-22 22:09:16,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 409 states. [2022-07-22 22:09:16,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 409 to 399. [2022-07-22 22:09:16,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 399 states, 272 states have (on average 1.1470588235294117) internal successors, (312), 280 states have internal predecessors, (312), 99 states have call successors, (99), 21 states have call predecessors, (99), 27 states have return successors, (159), 97 states have call predecessors, (159), 98 states have call successors, (159) [2022-07-22 22:09:16,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 399 states to 399 states and 570 transitions. [2022-07-22 22:09:16,260 INFO L78 Accepts]: Start accepts. Automaton has 399 states and 570 transitions. Word has length 132 [2022-07-22 22:09:16,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 22:09:16,260 INFO L495 AbstractCegarLoop]: Abstraction has 399 states and 570 transitions. [2022-07-22 22:09:16,260 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 8.625) internal successors, (69), 8 states have internal predecessors, (69), 3 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2022-07-22 22:09:16,260 INFO L276 IsEmpty]: Start isEmpty. Operand 399 states and 570 transitions. [2022-07-22 22:09:16,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-07-22 22:09:16,262 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:09:16,262 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 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] [2022-07-22 22:09:16,286 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2022-07-22 22:09:16,479 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:09:16,479 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:09:16,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:09:16,480 INFO L85 PathProgramCache]: Analyzing trace with hash -984070051, now seen corresponding path program 1 times [2022-07-22 22:09:16,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:09:16,480 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1329341763] [2022-07-22 22:09:16,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:09:16,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:09:16,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:16,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 22:09:16,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:16,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-22 22:09:16,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:16,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 22:09:16,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:16,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:09:16,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:16,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 22:09:16,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:16,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:09:16,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:16,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-22 22:09:16,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:16,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-22 22:09:16,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:16,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-22 22:09:16,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:16,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-22 22:09:16,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:16,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-22 22:09:16,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:16,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-22 22:09:16,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:16,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-07-22 22:09:16,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:16,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-07-22 22:09:16,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:16,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-07-22 22:09:16,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:16,725 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 21 proven. 8 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2022-07-22 22:09:16,725 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:09:16,726 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1329341763] [2022-07-22 22:09:16,726 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1329341763] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 22:09:16,726 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1306484238] [2022-07-22 22:09:16,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:09:16,726 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:09:16,726 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 22:09:16,740 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 22:09:16,741 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-07-22 22:09:17,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:17,230 INFO L263 TraceCheckSpWp]: Trace formula consists of 2845 conjuncts, 24 conjunts are in the unsatisfiable core [2022-07-22 22:09:17,232 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 22:09:17,288 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 82 proven. 0 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2022-07-22 22:09:17,288 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 22:09:17,288 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1306484238] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 22:09:17,289 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 22:09:17,289 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [11] total 12 [2022-07-22 22:09:17,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [648461506] [2022-07-22 22:09:17,291 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 22:09:17,291 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-22 22:09:17,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:09:17,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-22 22:09:17,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2022-07-22 22:09:17,292 INFO L87 Difference]: Start difference. First operand 399 states and 570 transitions. Second operand has 9 states, 8 states have (on average 9.625) internal successors, (77), 8 states have internal predecessors, (77), 3 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2022-07-22 22:09:17,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 22:09:17,423 INFO L93 Difference]: Finished difference Result 635 states and 923 transitions. [2022-07-22 22:09:17,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-22 22:09:17,423 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 9.625) internal successors, (77), 8 states have internal predecessors, (77), 3 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) Word has length 134 [2022-07-22 22:09:17,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 22:09:17,425 INFO L225 Difference]: With dead ends: 635 [2022-07-22 22:09:17,425 INFO L226 Difference]: Without dead ends: 404 [2022-07-22 22:09:17,427 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 161 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2022-07-22 22:09:17,428 INFO L413 NwaCegarLoop]: 229 mSDtfsCounter, 12 mSDsluCounter, 1532 mSDsCounter, 0 mSdLazyCounter, 160 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 1761 SdHoareTripleChecker+Invalid, 162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 160 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-22 22:09:17,428 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 1761 Invalid, 162 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 160 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-22 22:09:17,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 404 states. [2022-07-22 22:09:17,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 404 to 396. [2022-07-22 22:09:17,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 396 states, 270 states have (on average 1.1481481481481481) internal successors, (310), 277 states have internal predecessors, (310), 99 states have call successors, (99), 21 states have call predecessors, (99), 26 states have return successors, (152), 97 states have call predecessors, (152), 98 states have call successors, (152) [2022-07-22 22:09:17,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 396 states to 396 states and 561 transitions. [2022-07-22 22:09:17,452 INFO L78 Accepts]: Start accepts. Automaton has 396 states and 561 transitions. Word has length 134 [2022-07-22 22:09:17,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 22:09:17,452 INFO L495 AbstractCegarLoop]: Abstraction has 396 states and 561 transitions. [2022-07-22 22:09:17,452 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 9.625) internal successors, (77), 8 states have internal predecessors, (77), 3 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2022-07-22 22:09:17,452 INFO L276 IsEmpty]: Start isEmpty. Operand 396 states and 561 transitions. [2022-07-22 22:09:17,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2022-07-22 22:09:17,454 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:09:17,454 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 4, 4, 4, 4, 4, 4, 4, 3, 3, 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] [2022-07-22 22:09:17,483 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-07-22 22:09:17,663 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:09:17,663 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:09:17,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:09:17,664 INFO L85 PathProgramCache]: Analyzing trace with hash -2087607718, now seen corresponding path program 1 times [2022-07-22 22:09:17,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:09:17,664 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [10896747] [2022-07-22 22:09:17,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:09:17,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:09:17,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:17,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 22:09:17,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:17,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-22 22:09:17,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:18,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 22:09:18,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:18,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:09:18,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:18,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 22:09:18,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:18,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:09:18,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:18,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-22 22:09:18,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:18,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-22 22:09:18,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:18,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-22 22:09:18,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:18,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-22 22:09:18,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:18,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-07-22 22:09:18,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:18,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-22 22:09:18,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:18,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-22 22:09:18,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:18,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-07-22 22:09:18,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:18,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-07-22 22:09:18,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:18,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-07-22 22:09:18,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:18,227 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 20 proven. 10 refuted. 0 times theorem prover too weak. 127 trivial. 0 not checked. [2022-07-22 22:09:18,227 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:09:18,227 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [10896747] [2022-07-22 22:09:18,227 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [10896747] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 22:09:18,227 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1590800776] [2022-07-22 22:09:18,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:09:18,228 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:09:18,228 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 22:09:18,229 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 22:09:18,230 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-07-22 22:09:18,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:18,762 INFO L263 TraceCheckSpWp]: Trace formula consists of 2883 conjuncts, 31 conjunts are in the unsatisfiable core [2022-07-22 22:09:18,765 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 22:09:18,771 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-07-22 22:09:19,037 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 22 [2022-07-22 22:09:19,063 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2022-07-22 22:09:19,087 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 96 proven. 0 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2022-07-22 22:09:19,087 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 22:09:19,087 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1590800776] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 22:09:19,087 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 22:09:19,087 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [19] total 25 [2022-07-22 22:09:19,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [655750061] [2022-07-22 22:09:19,087 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 22:09:19,088 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-22 22:09:19,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:09:19,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-22 22:09:19,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=535, Unknown=0, NotChecked=0, Total=600 [2022-07-22 22:09:19,088 INFO L87 Difference]: Start difference. First operand 396 states and 561 transitions. Second operand has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 4 states have call successors, (17), 3 states have call predecessors, (17), 4 states have return successors, (16), 4 states have call predecessors, (16), 4 states have call successors, (16) [2022-07-22 22:09:19,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 22:09:19,902 INFO L93 Difference]: Finished difference Result 683 states and 1039 transitions. [2022-07-22 22:09:19,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-22 22:09:19,902 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 4 states have call successors, (17), 3 states have call predecessors, (17), 4 states have return successors, (16), 4 states have call predecessors, (16), 4 states have call successors, (16) Word has length 137 [2022-07-22 22:09:19,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 22:09:19,904 INFO L225 Difference]: With dead ends: 683 [2022-07-22 22:09:19,905 INFO L226 Difference]: Without dead ends: 509 [2022-07-22 22:09:19,906 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 157 SyntacticMatches, 4 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 229 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=96, Invalid=774, Unknown=0, NotChecked=0, Total=870 [2022-07-22 22:09:19,906 INFO L413 NwaCegarLoop]: 258 mSDtfsCounter, 155 mSDsluCounter, 1487 mSDsCounter, 0 mSdLazyCounter, 833 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 204 SdHoareTripleChecker+Valid, 1745 SdHoareTripleChecker+Invalid, 1025 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 833 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 106 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-22 22:09:19,906 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [204 Valid, 1745 Invalid, 1025 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 833 Invalid, 0 Unknown, 106 Unchecked, 0.7s Time] [2022-07-22 22:09:19,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 509 states. [2022-07-22 22:09:19,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 509 to 412. [2022-07-22 22:09:19,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 412 states, 283 states have (on average 1.137809187279152) internal successors, (322), 292 states have internal predecessors, (322), 99 states have call successors, (99), 22 states have call predecessors, (99), 29 states have return successors, (173), 97 states have call predecessors, (173), 98 states have call successors, (173) [2022-07-22 22:09:19,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 412 states to 412 states and 594 transitions. [2022-07-22 22:09:19,930 INFO L78 Accepts]: Start accepts. Automaton has 412 states and 594 transitions. Word has length 137 [2022-07-22 22:09:19,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 22:09:19,931 INFO L495 AbstractCegarLoop]: Abstraction has 412 states and 594 transitions. [2022-07-22 22:09:19,931 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 4 states have call successors, (17), 3 states have call predecessors, (17), 4 states have return successors, (16), 4 states have call predecessors, (16), 4 states have call successors, (16) [2022-07-22 22:09:19,931 INFO L276 IsEmpty]: Start isEmpty. Operand 412 states and 594 transitions. [2022-07-22 22:09:19,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2022-07-22 22:09:19,932 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:09:19,932 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 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] [2022-07-22 22:09:19,956 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-07-22 22:09:20,153 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:09:20,154 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:09:20,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:09:20,154 INFO L85 PathProgramCache]: Analyzing trace with hash -1691174062, now seen corresponding path program 2 times [2022-07-22 22:09:20,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:09:20,154 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [28926099] [2022-07-22 22:09:20,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:09:20,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:09:20,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:20,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 22:09:20,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:20,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-22 22:09:20,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:20,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 22:09:20,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:20,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:09:20,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:20,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 22:09:20,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:20,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:09:20,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:20,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-22 22:09:20,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:20,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-22 22:09:20,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:20,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-22 22:09:20,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:20,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-22 22:09:20,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:20,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-22 22:09:20,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:20,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-22 22:09:20,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:20,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-07-22 22:09:20,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:20,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-07-22 22:09:20,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:20,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-07-22 22:09:20,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:20,794 INFO L134 CoverageAnalysis]: Checked inductivity of 143 backedges. 10 proven. 20 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2022-07-22 22:09:20,794 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:09:20,794 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [28926099] [2022-07-22 22:09:20,794 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [28926099] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 22:09:20,794 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1929583184] [2022-07-22 22:09:20,794 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-22 22:09:20,794 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:09:20,795 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 22:09:20,796 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 22:09:20,797 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-07-22 22:09:21,259 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-07-22 22:09:21,259 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-22 22:09:21,267 INFO L263 TraceCheckSpWp]: Trace formula consists of 2414 conjuncts, 37 conjunts are in the unsatisfiable core [2022-07-22 22:09:21,270 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 22:09:21,311 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:09:21,311 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:09:21,312 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:09:21,312 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:09:21,313 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:09:21,314 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:09:21,314 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 35 [2022-07-22 22:09:21,326 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:09:21,327 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:09:21,327 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:09:21,328 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:09:21,328 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:09:21,329 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:09:21,330 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 35 [2022-07-22 22:09:21,595 INFO L134 CoverageAnalysis]: Checked inductivity of 143 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2022-07-22 22:09:21,595 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 22:09:21,595 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1929583184] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 22:09:21,595 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 22:09:21,595 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [16] total 24 [2022-07-22 22:09:21,595 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [808668100] [2022-07-22 22:09:21,595 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 22:09:21,596 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-22 22:09:21,596 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:09:21,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-22 22:09:21,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=491, Unknown=0, NotChecked=0, Total=552 [2022-07-22 22:09:21,596 INFO L87 Difference]: Start difference. First operand 412 states and 594 transitions. Second operand has 10 states, 9 states have (on average 7.222222222222222) internal successors, (65), 9 states have internal predecessors, (65), 3 states have call successors, (16), 3 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-07-22 22:09:21,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 22:09:21,647 INFO L93 Difference]: Finished difference Result 541 states and 770 transitions. [2022-07-22 22:09:21,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-22 22:09:21,648 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 7.222222222222222) internal successors, (65), 9 states have internal predecessors, (65), 3 states have call successors, (16), 3 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 136 [2022-07-22 22:09:21,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 22:09:21,650 INFO L225 Difference]: With dead ends: 541 [2022-07-22 22:09:21,650 INFO L226 Difference]: Without dead ends: 422 [2022-07-22 22:09:21,651 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 156 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 95 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=61, Invalid=491, Unknown=0, NotChecked=0, Total=552 [2022-07-22 22:09:21,652 INFO L413 NwaCegarLoop]: 243 mSDtfsCounter, 13 mSDsluCounter, 1024 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 1267 SdHoareTripleChecker+Invalid, 173 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 152 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 22:09:21,653 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 1267 Invalid, 173 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 19 Invalid, 0 Unknown, 152 Unchecked, 0.0s Time] [2022-07-22 22:09:21,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 422 states. [2022-07-22 22:09:21,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 422 to 416. [2022-07-22 22:09:21,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 416 states, 287 states have (on average 1.1393728222996515) internal successors, (327), 296 states have internal predecessors, (327), 99 states have call successors, (99), 22 states have call predecessors, (99), 29 states have return successors, (173), 97 states have call predecessors, (173), 98 states have call successors, (173) [2022-07-22 22:09:21,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 416 states to 416 states and 599 transitions. [2022-07-22 22:09:21,675 INFO L78 Accepts]: Start accepts. Automaton has 416 states and 599 transitions. Word has length 136 [2022-07-22 22:09:21,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 22:09:21,676 INFO L495 AbstractCegarLoop]: Abstraction has 416 states and 599 transitions. [2022-07-22 22:09:21,676 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 7.222222222222222) internal successors, (65), 9 states have internal predecessors, (65), 3 states have call successors, (16), 3 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-07-22 22:09:21,676 INFO L276 IsEmpty]: Start isEmpty. Operand 416 states and 599 transitions. [2022-07-22 22:09:21,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2022-07-22 22:09:21,677 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:09:21,677 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 22:09:21,700 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2022-07-22 22:09:21,891 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:09:21,891 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:09:21,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:09:21,892 INFO L85 PathProgramCache]: Analyzing trace with hash 1323929556, now seen corresponding path program 3 times [2022-07-22 22:09:21,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:09:21,892 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1546728036] [2022-07-22 22:09:21,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:09:21,892 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:09:22,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:22,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 22:09:22,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:22,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-22 22:09:22,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:22,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 22:09:22,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:22,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:09:22,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:22,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 22:09:22,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:22,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:09:22,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:22,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-22 22:09:22,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:22,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-22 22:09:22,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:22,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-22 22:09:22,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:22,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-22 22:09:22,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:22,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-22 22:09:22,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:22,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-22 22:09:22,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:22,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-07-22 22:09:22,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:22,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-07-22 22:09:22,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:22,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-07-22 22:09:22,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:22,205 INFO L134 CoverageAnalysis]: Checked inductivity of 143 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2022-07-22 22:09:22,205 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:09:22,205 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1546728036] [2022-07-22 22:09:22,205 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1546728036] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 22:09:22,205 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 22:09:22,205 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-22 22:09:22,205 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1387935699] [2022-07-22 22:09:22,205 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 22:09:22,205 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-22 22:09:22,206 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:09:22,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-22 22:09:22,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2022-07-22 22:09:22,206 INFO L87 Difference]: Start difference. First operand 416 states and 599 transitions. Second operand has 11 states, 10 states have (on average 6.5) internal successors, (65), 9 states have internal predecessors, (65), 3 states have call successors, (16), 4 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-07-22 22:09:23,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 22:09:23,326 INFO L93 Difference]: Finished difference Result 601 states and 891 transitions. [2022-07-22 22:09:23,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-22 22:09:23,327 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 6.5) internal successors, (65), 9 states have internal predecessors, (65), 3 states have call successors, (16), 4 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 136 [2022-07-22 22:09:23,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 22:09:23,329 INFO L225 Difference]: With dead ends: 601 [2022-07-22 22:09:23,329 INFO L226 Difference]: Without dead ends: 490 [2022-07-22 22:09:23,330 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=61, Invalid=179, Unknown=0, NotChecked=0, Total=240 [2022-07-22 22:09:23,330 INFO L413 NwaCegarLoop]: 280 mSDtfsCounter, 200 mSDsluCounter, 864 mSDsCounter, 0 mSdLazyCounter, 1230 mSolverCounterSat, 138 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 228 SdHoareTripleChecker+Valid, 1144 SdHoareTripleChecker+Invalid, 1368 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 138 IncrementalHoareTripleChecker+Valid, 1230 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-22 22:09:23,330 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [228 Valid, 1144 Invalid, 1368 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [138 Valid, 1230 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-22 22:09:23,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 490 states. [2022-07-22 22:09:23,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 490 to 416. [2022-07-22 22:09:23,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 416 states, 287 states have (on average 1.1393728222996515) internal successors, (327), 296 states have internal predecessors, (327), 99 states have call successors, (99), 22 states have call predecessors, (99), 29 states have return successors, (172), 97 states have call predecessors, (172), 98 states have call successors, (172) [2022-07-22 22:09:23,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 416 states to 416 states and 598 transitions. [2022-07-22 22:09:23,354 INFO L78 Accepts]: Start accepts. Automaton has 416 states and 598 transitions. Word has length 136 [2022-07-22 22:09:23,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 22:09:23,354 INFO L495 AbstractCegarLoop]: Abstraction has 416 states and 598 transitions. [2022-07-22 22:09:23,354 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 6.5) internal successors, (65), 9 states have internal predecessors, (65), 3 states have call successors, (16), 4 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-07-22 22:09:23,354 INFO L276 IsEmpty]: Start isEmpty. Operand 416 states and 598 transitions. [2022-07-22 22:09:23,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2022-07-22 22:09:23,356 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:09:23,356 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-07-22 22:09:23,356 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-07-22 22:09:23,356 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:09:23,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:09:23,356 INFO L85 PathProgramCache]: Analyzing trace with hash -1902565441, now seen corresponding path program 1 times [2022-07-22 22:09:23,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:09:23,357 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1142390855] [2022-07-22 22:09:23,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:09:23,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:09:23,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:23,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 22:09:23,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:23,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-22 22:09:23,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:23,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 22:09:23,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:23,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:09:23,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:23,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 22:09:23,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:23,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:09:23,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:23,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-22 22:09:23,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:23,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-22 22:09:23,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:23,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-22 22:09:23,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:23,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-22 22:09:23,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:23,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-22 22:09:23,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:23,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-22 22:09:23,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:23,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-07-22 22:09:23,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:23,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-07-22 22:09:23,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:23,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-07-22 22:09:23,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:23,610 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 131 trivial. 0 not checked. [2022-07-22 22:09:23,610 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:09:23,611 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1142390855] [2022-07-22 22:09:23,611 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1142390855] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 22:09:23,611 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 22:09:23,611 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-07-22 22:09:23,611 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [887560042] [2022-07-22 22:09:23,611 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 22:09:23,611 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-07-22 22:09:23,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:09:23,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-22 22:09:23,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2022-07-22 22:09:23,612 INFO L87 Difference]: Start difference. First operand 416 states and 598 transitions. Second operand has 12 states, 11 states have (on average 5.181818181818182) internal successors, (57), 8 states have internal predecessors, (57), 2 states have call successors, (16), 4 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 1 states have call successors, (15) [2022-07-22 22:09:24,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 22:09:24,234 INFO L93 Difference]: Finished difference Result 432 states and 614 transitions. [2022-07-22 22:09:24,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-22 22:09:24,234 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 5.181818181818182) internal successors, (57), 8 states have internal predecessors, (57), 2 states have call successors, (16), 4 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 1 states have call successors, (15) Word has length 138 [2022-07-22 22:09:24,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 22:09:24,236 INFO L225 Difference]: With dead ends: 432 [2022-07-22 22:09:24,236 INFO L226 Difference]: Without dead ends: 430 [2022-07-22 22:09:24,236 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=79, Invalid=301, Unknown=0, NotChecked=0, Total=380 [2022-07-22 22:09:24,237 INFO L413 NwaCegarLoop]: 206 mSDtfsCounter, 154 mSDsluCounter, 980 mSDsCounter, 0 mSdLazyCounter, 992 mSolverCounterSat, 135 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 160 SdHoareTripleChecker+Valid, 1186 SdHoareTripleChecker+Invalid, 1127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 135 IncrementalHoareTripleChecker+Valid, 992 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-22 22:09:24,237 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [160 Valid, 1186 Invalid, 1127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [135 Valid, 992 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-22 22:09:24,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 430 states. [2022-07-22 22:09:24,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 430 to 416. [2022-07-22 22:09:24,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 416 states, 287 states have (on average 1.1393728222996515) internal successors, (327), 296 states have internal predecessors, (327), 99 states have call successors, (99), 22 states have call predecessors, (99), 29 states have return successors, (172), 97 states have call predecessors, (172), 98 states have call successors, (172) [2022-07-22 22:09:24,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 416 states to 416 states and 598 transitions. [2022-07-22 22:09:24,259 INFO L78 Accepts]: Start accepts. Automaton has 416 states and 598 transitions. Word has length 138 [2022-07-22 22:09:24,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 22:09:24,259 INFO L495 AbstractCegarLoop]: Abstraction has 416 states and 598 transitions. [2022-07-22 22:09:24,260 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 5.181818181818182) internal successors, (57), 8 states have internal predecessors, (57), 2 states have call successors, (16), 4 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 1 states have call successors, (15) [2022-07-22 22:09:24,260 INFO L276 IsEmpty]: Start isEmpty. Operand 416 states and 598 transitions. [2022-07-22 22:09:24,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2022-07-22 22:09:24,261 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:09:24,261 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-07-22 22:09:24,261 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-07-22 22:09:24,261 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:09:24,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:09:24,261 INFO L85 PathProgramCache]: Analyzing trace with hash -1201500863, now seen corresponding path program 1 times [2022-07-22 22:09:24,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:09:24,261 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [672300026] [2022-07-22 22:09:24,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:09:24,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:09:24,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:24,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 22:09:24,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:24,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-22 22:09:24,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:24,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 22:09:24,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:24,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:09:24,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:24,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 22:09:24,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:24,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:09:24,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:24,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-22 22:09:24,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:24,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-22 22:09:24,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:24,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-22 22:09:24,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:24,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-22 22:09:24,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:25,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-22 22:09:25,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:25,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-22 22:09:25,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:25,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-07-22 22:09:25,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:25,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-07-22 22:09:25,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:25,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-07-22 22:09:25,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:25,219 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 57 proven. 16 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2022-07-22 22:09:25,219 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:09:25,219 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [672300026] [2022-07-22 22:09:25,219 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [672300026] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 22:09:25,219 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [278739941] [2022-07-22 22:09:25,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:09:25,220 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:09:25,220 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 22:09:25,221 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 22:09:25,250 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-07-22 22:09:25,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:25,748 INFO L263 TraceCheckSpWp]: Trace formula consists of 2854 conjuncts, 76 conjunts are in the unsatisfiable core [2022-07-22 22:09:25,752 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 22:09:26,028 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:09:26,029 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:09:26,029 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:09:26,030 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:09:26,031 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:09:26,031 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:09:26,032 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 35 [2022-07-22 22:09:26,035 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:09:26,036 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:09:26,037 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:09:26,037 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:09:26,038 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:09:26,038 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:09:26,039 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 35 [2022-07-22 22:09:26,699 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-22 22:09:26,700 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 57 treesize of output 53 [2022-07-22 22:09:26,705 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-22 22:09:26,705 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 45 treesize of output 41 [2022-07-22 22:09:26,758 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 57 proven. 22 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2022-07-22 22:09:26,758 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 22:09:27,579 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 57 proven. 0 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2022-07-22 22:09:27,579 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [278739941] provided 1 perfect and 1 imperfect interpolant sequences [2022-07-22 22:09:27,579 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-07-22 22:09:27,579 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [26, 25] total 57 [2022-07-22 22:09:27,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [965891812] [2022-07-22 22:09:27,579 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 22:09:27,579 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-07-22 22:09:27,579 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:09:27,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-07-22 22:09:27,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=170, Invalid=3022, Unknown=0, NotChecked=0, Total=3192 [2022-07-22 22:09:27,581 INFO L87 Difference]: Start difference. First operand 416 states and 598 transitions. Second operand has 16 states, 14 states have (on average 5.0) internal successors, (70), 14 states have internal predecessors, (70), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 3 states have call predecessors, (15), 2 states have call successors, (15) [2022-07-22 22:09:28,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 22:09:28,604 INFO L93 Difference]: Finished difference Result 481 states and 694 transitions. [2022-07-22 22:09:28,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-07-22 22:09:28,615 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 14 states have (on average 5.0) internal successors, (70), 14 states have internal predecessors, (70), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 3 states have call predecessors, (15), 2 states have call successors, (15) Word has length 138 [2022-07-22 22:09:28,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 22:09:28,618 INFO L225 Difference]: With dead ends: 481 [2022-07-22 22:09:28,618 INFO L226 Difference]: Without dead ends: 479 [2022-07-22 22:09:28,619 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 338 GetRequests, 270 SyntacticMatches, 3 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 934 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=239, Invalid=4183, Unknown=0, NotChecked=0, Total=4422 [2022-07-22 22:09:28,619 INFO L413 NwaCegarLoop]: 260 mSDtfsCounter, 75 mSDsluCounter, 2953 mSDsCounter, 0 mSdLazyCounter, 914 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 3213 SdHoareTripleChecker+Invalid, 936 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 914 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-22 22:09:28,620 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [104 Valid, 3213 Invalid, 936 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 914 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-22 22:09:28,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 479 states. [2022-07-22 22:09:28,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 479 to 416. [2022-07-22 22:09:28,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 416 states, 287 states have (on average 1.1393728222996515) internal successors, (327), 296 states have internal predecessors, (327), 99 states have call successors, (99), 22 states have call predecessors, (99), 29 states have return successors, (172), 97 states have call predecessors, (172), 98 states have call successors, (172) [2022-07-22 22:09:28,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 416 states to 416 states and 598 transitions. [2022-07-22 22:09:28,670 INFO L78 Accepts]: Start accepts. Automaton has 416 states and 598 transitions. Word has length 138 [2022-07-22 22:09:28,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 22:09:28,670 INFO L495 AbstractCegarLoop]: Abstraction has 416 states and 598 transitions. [2022-07-22 22:09:28,671 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 14 states have (on average 5.0) internal successors, (70), 14 states have internal predecessors, (70), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 3 states have call predecessors, (15), 2 states have call successors, (15) [2022-07-22 22:09:28,671 INFO L276 IsEmpty]: Start isEmpty. Operand 416 states and 598 transitions. [2022-07-22 22:09:28,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2022-07-22 22:09:28,672 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:09:28,672 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-07-22 22:09:28,693 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2022-07-22 22:09:28,893 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:09:28,893 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:09:28,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:09:28,894 INFO L85 PathProgramCache]: Analyzing trace with hash -1335514369, now seen corresponding path program 1 times [2022-07-22 22:09:28,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:09:28,894 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1526789158] [2022-07-22 22:09:28,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:09:28,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:09:28,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:29,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 22:09:29,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:29,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-22 22:09:29,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:29,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 22:09:29,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:29,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:09:29,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:29,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 22:09:29,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:29,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:09:29,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:29,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-22 22:09:29,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:29,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-22 22:09:29,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:29,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-22 22:09:29,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:29,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-22 22:09:29,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:29,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-22 22:09:29,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:29,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-22 22:09:29,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:29,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-07-22 22:09:29,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:29,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-07-22 22:09:29,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:29,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-07-22 22:09:29,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:29,186 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2022-07-22 22:09:29,186 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:09:29,186 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1526789158] [2022-07-22 22:09:29,187 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1526789158] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 22:09:29,187 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 22:09:29,187 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-22 22:09:29,187 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [303487851] [2022-07-22 22:09:29,187 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 22:09:29,187 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-22 22:09:29,187 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:09:29,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-22 22:09:29,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-07-22 22:09:29,189 INFO L87 Difference]: Start difference. First operand 416 states and 598 transitions. Second operand has 9 states, 8 states have (on average 8.375) internal successors, (67), 7 states have internal predecessors, (67), 3 states have call successors, (16), 4 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-07-22 22:09:30,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 22:09:30,075 INFO L93 Difference]: Finished difference Result 579 states and 848 transitions. [2022-07-22 22:09:30,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-22 22:09:30,080 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 8.375) internal successors, (67), 7 states have internal predecessors, (67), 3 states have call successors, (16), 4 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 138 [2022-07-22 22:09:30,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 22:09:30,082 INFO L225 Difference]: With dead ends: 579 [2022-07-22 22:09:30,082 INFO L226 Difference]: Without dead ends: 468 [2022-07-22 22:09:30,082 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2022-07-22 22:09:30,083 INFO L413 NwaCegarLoop]: 270 mSDtfsCounter, 117 mSDsluCounter, 667 mSDsCounter, 0 mSdLazyCounter, 973 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 145 SdHoareTripleChecker+Valid, 937 SdHoareTripleChecker+Invalid, 1045 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 973 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-22 22:09:30,083 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [145 Valid, 937 Invalid, 1045 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 973 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-22 22:09:30,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 468 states. [2022-07-22 22:09:30,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 468 to 415. [2022-07-22 22:09:30,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 415 states, 287 states have (on average 1.1393728222996515) internal successors, (327), 296 states have internal predecessors, (327), 98 states have call successors, (98), 22 states have call predecessors, (98), 29 states have return successors, (170), 96 states have call predecessors, (170), 97 states have call successors, (170) [2022-07-22 22:09:30,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 415 states to 415 states and 595 transitions. [2022-07-22 22:09:30,108 INFO L78 Accepts]: Start accepts. Automaton has 415 states and 595 transitions. Word has length 138 [2022-07-22 22:09:30,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 22:09:30,108 INFO L495 AbstractCegarLoop]: Abstraction has 415 states and 595 transitions. [2022-07-22 22:09:30,108 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 8.375) internal successors, (67), 7 states have internal predecessors, (67), 3 states have call successors, (16), 4 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-07-22 22:09:30,108 INFO L276 IsEmpty]: Start isEmpty. Operand 415 states and 595 transitions. [2022-07-22 22:09:30,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2022-07-22 22:09:30,110 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:09:30,110 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 22:09:30,110 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-07-22 22:09:30,110 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:09:30,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:09:30,110 INFO L85 PathProgramCache]: Analyzing trace with hash 148730141, now seen corresponding path program 1 times [2022-07-22 22:09:30,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:09:30,111 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [53474473] [2022-07-22 22:09:30,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:09:30,111 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:09:30,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:30,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 22:09:30,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:30,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-22 22:09:30,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:30,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 22:09:30,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:30,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:09:30,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:30,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 22:09:30,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:30,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:09:30,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:30,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-22 22:09:30,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:30,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-22 22:09:30,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:30,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-22 22:09:30,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:30,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-22 22:09:30,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:30,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-22 22:09:30,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:30,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-22 22:09:30,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:30,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-07-22 22:09:30,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:30,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-07-22 22:09:30,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:30,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:09:30,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:30,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:09:30,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:30,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-07-22 22:09:30,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:30,301 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 135 trivial. 0 not checked. [2022-07-22 22:09:30,301 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:09:30,301 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [53474473] [2022-07-22 22:09:30,301 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [53474473] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 22:09:30,301 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 22:09:30,301 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-22 22:09:30,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [792006592] [2022-07-22 22:09:30,302 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 22:09:30,302 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-22 22:09:30,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:09:30,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-22 22:09:30,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-07-22 22:09:30,303 INFO L87 Difference]: Start difference. First operand 415 states and 595 transitions. Second operand has 9 states, 8 states have (on average 7.125) internal successors, (57), 6 states have internal predecessors, (57), 4 states have call successors, (18), 5 states have call predecessors, (18), 3 states have return successors, (17), 4 states have call predecessors, (17), 4 states have call successors, (17) [2022-07-22 22:09:30,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 22:09:30,884 INFO L93 Difference]: Finished difference Result 588 states and 864 transitions. [2022-07-22 22:09:30,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-22 22:09:30,895 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 7.125) internal successors, (57), 6 states have internal predecessors, (57), 4 states have call successors, (18), 5 states have call predecessors, (18), 3 states have return successors, (17), 4 states have call predecessors, (17), 4 states have call successors, (17) Word has length 142 [2022-07-22 22:09:30,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 22:09:30,897 INFO L225 Difference]: With dead ends: 588 [2022-07-22 22:09:30,897 INFO L226 Difference]: Without dead ends: 415 [2022-07-22 22:09:30,898 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2022-07-22 22:09:30,901 INFO L413 NwaCegarLoop]: 207 mSDtfsCounter, 85 mSDsluCounter, 588 mSDsCounter, 0 mSdLazyCounter, 682 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 795 SdHoareTripleChecker+Invalid, 749 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 682 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-22 22:09:30,902 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [89 Valid, 795 Invalid, 749 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 682 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-22 22:09:30,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 415 states. [2022-07-22 22:09:30,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 415 to 415. [2022-07-22 22:09:30,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 415 states, 287 states have (on average 1.1358885017421603) internal successors, (326), 296 states have internal predecessors, (326), 98 states have call successors, (98), 22 states have call predecessors, (98), 29 states have return successors, (170), 96 states have call predecessors, (170), 97 states have call successors, (170) [2022-07-22 22:09:30,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 415 states to 415 states and 594 transitions. [2022-07-22 22:09:30,928 INFO L78 Accepts]: Start accepts. Automaton has 415 states and 594 transitions. Word has length 142 [2022-07-22 22:09:30,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 22:09:30,928 INFO L495 AbstractCegarLoop]: Abstraction has 415 states and 594 transitions. [2022-07-22 22:09:30,929 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 7.125) internal successors, (57), 6 states have internal predecessors, (57), 4 states have call successors, (18), 5 states have call predecessors, (18), 3 states have return successors, (17), 4 states have call predecessors, (17), 4 states have call successors, (17) [2022-07-22 22:09:30,929 INFO L276 IsEmpty]: Start isEmpty. Operand 415 states and 594 transitions. [2022-07-22 22:09:30,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2022-07-22 22:09:30,930 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:09:30,930 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 22:09:30,930 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-07-22 22:09:30,930 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:09:30,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:09:30,931 INFO L85 PathProgramCache]: Analyzing trace with hash 1573992648, now seen corresponding path program 1 times [2022-07-22 22:09:30,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:09:30,931 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [667604892] [2022-07-22 22:09:30,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:09:30,931 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:09:30,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:31,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 22:09:31,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:31,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-22 22:09:31,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:31,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 22:09:31,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:31,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:09:31,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:31,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 22:09:31,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:31,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:09:31,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:31,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-22 22:09:31,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:31,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-22 22:09:31,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:31,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-22 22:09:31,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:31,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-22 22:09:31,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:31,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-22 22:09:31,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:31,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-22 22:09:31,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:31,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-07-22 22:09:31,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:31,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-07-22 22:09:31,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:31,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:09:31,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:31,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:09:31,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:31,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-07-22 22:09:31,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:31,142 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2022-07-22 22:09:31,142 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:09:31,142 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [667604892] [2022-07-22 22:09:31,142 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [667604892] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 22:09:31,142 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 22:09:31,142 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-22 22:09:31,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [30230452] [2022-07-22 22:09:31,142 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 22:09:31,143 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-22 22:09:31,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:09:31,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-22 22:09:31,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2022-07-22 22:09:31,143 INFO L87 Difference]: Start difference. First operand 415 states and 594 transitions. Second operand has 11 states, 10 states have (on average 6.2) internal successors, (62), 6 states have internal predecessors, (62), 2 states have call successors, (18), 5 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 1 states have call successors, (17) [2022-07-22 22:09:31,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 22:09:31,720 INFO L93 Difference]: Finished difference Result 435 states and 616 transitions. [2022-07-22 22:09:31,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-22 22:09:31,721 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 6.2) internal successors, (62), 6 states have internal predecessors, (62), 2 states have call successors, (18), 5 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 1 states have call successors, (17) Word has length 143 [2022-07-22 22:09:31,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 22:09:31,723 INFO L225 Difference]: With dead ends: 435 [2022-07-22 22:09:31,723 INFO L226 Difference]: Without dead ends: 433 [2022-07-22 22:09:31,723 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2022-07-22 22:09:31,723 INFO L413 NwaCegarLoop]: 213 mSDtfsCounter, 192 mSDsluCounter, 764 mSDsCounter, 0 mSdLazyCounter, 876 mSolverCounterSat, 183 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 198 SdHoareTripleChecker+Valid, 977 SdHoareTripleChecker+Invalid, 1059 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 183 IncrementalHoareTripleChecker+Valid, 876 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-22 22:09:31,724 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [198 Valid, 977 Invalid, 1059 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [183 Valid, 876 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-22 22:09:31,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 433 states. [2022-07-22 22:09:31,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 433 to 422. [2022-07-22 22:09:31,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 422 states, 290 states have (on average 1.1344827586206896) internal successors, (329), 299 states have internal predecessors, (329), 101 states have call successors, (101), 23 states have call predecessors, (101), 30 states have return successors, (173), 99 states have call predecessors, (173), 100 states have call successors, (173) [2022-07-22 22:09:31,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 422 states to 422 states and 603 transitions. [2022-07-22 22:09:31,752 INFO L78 Accepts]: Start accepts. Automaton has 422 states and 603 transitions. Word has length 143 [2022-07-22 22:09:31,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 22:09:31,753 INFO L495 AbstractCegarLoop]: Abstraction has 422 states and 603 transitions. [2022-07-22 22:09:31,753 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 6.2) internal successors, (62), 6 states have internal predecessors, (62), 2 states have call successors, (18), 5 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 1 states have call successors, (17) [2022-07-22 22:09:31,753 INFO L276 IsEmpty]: Start isEmpty. Operand 422 states and 603 transitions. [2022-07-22 22:09:31,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2022-07-22 22:09:31,754 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:09:31,755 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 22:09:31,755 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-07-22 22:09:31,755 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:09:31,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:09:31,756 INFO L85 PathProgramCache]: Analyzing trace with hash -874766962, now seen corresponding path program 1 times [2022-07-22 22:09:31,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:09:31,756 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [819883951] [2022-07-22 22:09:31,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:09:31,756 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:09:31,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:31,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 22:09:31,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:31,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-22 22:09:31,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:31,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 22:09:31,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:31,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:09:31,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:31,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 22:09:31,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:31,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:09:31,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:31,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-22 22:09:31,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:31,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-22 22:09:31,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:31,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-22 22:09:31,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:31,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-22 22:09:31,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:31,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-22 22:09:31,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:31,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-22 22:09:31,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:31,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-07-22 22:09:31,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:31,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-07-22 22:09:31,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:31,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:09:31,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:31,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:09:31,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:31,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-07-22 22:09:31,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:31,983 INFO L134 CoverageAnalysis]: Checked inductivity of 143 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 143 trivial. 0 not checked. [2022-07-22 22:09:31,983 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:09:31,983 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [819883951] [2022-07-22 22:09:31,984 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [819883951] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 22:09:31,984 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 22:09:31,984 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-22 22:09:31,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [290482563] [2022-07-22 22:09:31,984 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 22:09:31,984 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-22 22:09:31,984 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:09:31,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-22 22:09:31,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-07-22 22:09:31,985 INFO L87 Difference]: Start difference. First operand 422 states and 603 transitions. Second operand has 10 states, 9 states have (on average 6.666666666666667) internal successors, (60), 7 states have internal predecessors, (60), 4 states have call successors, (18), 5 states have call predecessors, (18), 3 states have return successors, (17), 4 states have call predecessors, (17), 4 states have call successors, (17) [2022-07-22 22:09:32,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 22:09:32,566 INFO L93 Difference]: Finished difference Result 538 states and 762 transitions. [2022-07-22 22:09:32,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-22 22:09:32,566 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 6.666666666666667) internal successors, (60), 7 states have internal predecessors, (60), 4 states have call successors, (18), 5 states have call predecessors, (18), 3 states have return successors, (17), 4 states have call predecessors, (17), 4 states have call successors, (17) Word has length 147 [2022-07-22 22:09:32,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 22:09:32,568 INFO L225 Difference]: With dead ends: 538 [2022-07-22 22:09:32,568 INFO L226 Difference]: Without dead ends: 358 [2022-07-22 22:09:32,571 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=79, Invalid=227, Unknown=0, NotChecked=0, Total=306 [2022-07-22 22:09:32,571 INFO L413 NwaCegarLoop]: 206 mSDtfsCounter, 78 mSDsluCounter, 588 mSDsCounter, 0 mSdLazyCounter, 687 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 794 SdHoareTripleChecker+Invalid, 755 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 687 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-22 22:09:32,571 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [82 Valid, 794 Invalid, 755 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 687 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-22 22:09:32,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 358 states. [2022-07-22 22:09:32,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 358 to 349. [2022-07-22 22:09:32,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 349 states, 251 states have (on average 1.1274900398406376) internal successors, (283), 259 states have internal predecessors, (283), 69 states have call successors, (69), 23 states have call predecessors, (69), 28 states have return successors, (116), 66 states have call predecessors, (116), 68 states have call successors, (116) [2022-07-22 22:09:32,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 349 states to 349 states and 468 transitions. [2022-07-22 22:09:32,590 INFO L78 Accepts]: Start accepts. Automaton has 349 states and 468 transitions. Word has length 147 [2022-07-22 22:09:32,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 22:09:32,590 INFO L495 AbstractCegarLoop]: Abstraction has 349 states and 468 transitions. [2022-07-22 22:09:32,590 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 6.666666666666667) internal successors, (60), 7 states have internal predecessors, (60), 4 states have call successors, (18), 5 states have call predecessors, (18), 3 states have return successors, (17), 4 states have call predecessors, (17), 4 states have call successors, (17) [2022-07-22 22:09:32,590 INFO L276 IsEmpty]: Start isEmpty. Operand 349 states and 468 transitions. [2022-07-22 22:09:32,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2022-07-22 22:09:32,591 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:09:32,592 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 22:09:32,592 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-07-22 22:09:32,592 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:09:32,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:09:32,592 INFO L85 PathProgramCache]: Analyzing trace with hash -1614049972, now seen corresponding path program 1 times [2022-07-22 22:09:32,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:09:32,592 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2063595344] [2022-07-22 22:09:32,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:09:32,593 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:09:32,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:32,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 22:09:32,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:32,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-22 22:09:32,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:32,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 22:09:32,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:32,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:09:32,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:32,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 22:09:32,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:32,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:09:32,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:32,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-22 22:09:32,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:32,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-22 22:09:32,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:32,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-22 22:09:32,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:32,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-22 22:09:32,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:32,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-22 22:09:32,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:32,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-22 22:09:32,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:32,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-07-22 22:09:32,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:32,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-07-22 22:09:32,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:32,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:09:32,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:32,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:09:32,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:32,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2022-07-22 22:09:32,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:32,853 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 143 trivial. 0 not checked. [2022-07-22 22:09:32,853 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:09:32,853 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2063595344] [2022-07-22 22:09:32,853 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2063595344] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 22:09:32,853 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [230453769] [2022-07-22 22:09:32,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:09:32,854 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:09:32,854 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 22:09:32,858 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 22:09:32,859 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-07-22 22:09:33,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:33,373 INFO L263 TraceCheckSpWp]: Trace formula consists of 2851 conjuncts, 47 conjunts are in the unsatisfiable core [2022-07-22 22:09:33,384 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 22:09:33,387 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-07-22 22:09:33,447 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-07-22 22:09:33,636 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 19 [2022-07-22 22:09:33,828 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 111 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-07-22 22:09:33,829 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 22:09:33,829 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [230453769] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 22:09:33,829 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 22:09:33,829 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [12] total 25 [2022-07-22 22:09:33,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1089665451] [2022-07-22 22:09:33,829 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 22:09:33,829 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-07-22 22:09:33,829 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:09:33,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-07-22 22:09:33,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=534, Unknown=0, NotChecked=0, Total=600 [2022-07-22 22:09:33,830 INFO L87 Difference]: Start difference. First operand 349 states and 468 transitions. Second operand has 15 states, 14 states have (on average 6.785714285714286) internal successors, (95), 14 states have internal predecessors, (95), 6 states have call successors, (18), 3 states have call predecessors, (18), 6 states have return successors, (17), 6 states have call predecessors, (17), 6 states have call successors, (17) [2022-07-22 22:09:34,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 22:09:34,125 INFO L93 Difference]: Finished difference Result 706 states and 1000 transitions. [2022-07-22 22:09:34,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-22 22:09:34,126 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 6.785714285714286) internal successors, (95), 14 states have internal predecessors, (95), 6 states have call successors, (18), 3 states have call predecessors, (18), 6 states have return successors, (17), 6 states have call predecessors, (17), 6 states have call successors, (17) Word has length 149 [2022-07-22 22:09:34,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 22:09:34,128 INFO L225 Difference]: With dead ends: 706 [2022-07-22 22:09:34,128 INFO L226 Difference]: Without dead ends: 470 [2022-07-22 22:09:34,129 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 160 SyntacticMatches, 6 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 189 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=77, Invalid=625, Unknown=0, NotChecked=0, Total=702 [2022-07-22 22:09:34,129 INFO L413 NwaCegarLoop]: 337 mSDtfsCounter, 86 mSDsluCounter, 2699 mSDsCounter, 0 mSdLazyCounter, 238 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 129 SdHoareTripleChecker+Valid, 3036 SdHoareTripleChecker+Invalid, 570 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 238 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 326 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-22 22:09:34,129 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [129 Valid, 3036 Invalid, 570 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 238 Invalid, 0 Unknown, 326 Unchecked, 0.2s Time] [2022-07-22 22:09:34,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 470 states. [2022-07-22 22:09:34,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 470 to 359. [2022-07-22 22:09:34,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 359 states, 261 states have (on average 1.1226053639846743) internal successors, (293), 268 states have internal predecessors, (293), 69 states have call successors, (69), 24 states have call predecessors, (69), 28 states have return successors, (115), 66 states have call predecessors, (115), 68 states have call successors, (115) [2022-07-22 22:09:34,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 359 states to 359 states and 477 transitions. [2022-07-22 22:09:34,170 INFO L78 Accepts]: Start accepts. Automaton has 359 states and 477 transitions. Word has length 149 [2022-07-22 22:09:34,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 22:09:34,170 INFO L495 AbstractCegarLoop]: Abstraction has 359 states and 477 transitions. [2022-07-22 22:09:34,170 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 6.785714285714286) internal successors, (95), 14 states have internal predecessors, (95), 6 states have call successors, (18), 3 states have call predecessors, (18), 6 states have return successors, (17), 6 states have call predecessors, (17), 6 states have call successors, (17) [2022-07-22 22:09:34,170 INFO L276 IsEmpty]: Start isEmpty. Operand 359 states and 477 transitions. [2022-07-22 22:09:34,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2022-07-22 22:09:34,171 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:09:34,171 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 22:09:34,193 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2022-07-22 22:09:34,393 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:09:34,393 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:09:34,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:09:34,393 INFO L85 PathProgramCache]: Analyzing trace with hash -891040382, now seen corresponding path program 1 times [2022-07-22 22:09:34,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:09:34,393 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [715815828] [2022-07-22 22:09:34,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:09:34,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:09:34,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:34,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 22:09:34,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:34,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-22 22:09:34,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:34,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 22:09:34,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:34,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:09:34,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:34,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 22:09:34,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:34,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:09:34,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:34,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-22 22:09:34,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:34,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-22 22:09:34,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:34,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-22 22:09:34,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:34,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-22 22:09:34,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:34,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-07-22 22:09:34,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:34,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-22 22:09:34,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:34,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-22 22:09:34,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:34,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-07-22 22:09:34,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:34,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-07-22 22:09:34,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:34,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:09:34,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:34,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:09:34,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:34,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-07-22 22:09:34,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:34,710 INFO L134 CoverageAnalysis]: Checked inductivity of 158 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 157 trivial. 0 not checked. [2022-07-22 22:09:34,710 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:09:34,710 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [715815828] [2022-07-22 22:09:34,710 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [715815828] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 22:09:34,710 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1920424331] [2022-07-22 22:09:34,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:09:34,710 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:09:34,711 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 22:09:34,712 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 22:09:34,712 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2022-07-22 22:09:35,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:35,261 INFO L263 TraceCheckSpWp]: Trace formula consists of 2892 conjuncts, 113 conjunts are in the unsatisfiable core [2022-07-22 22:09:35,266 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 22:09:35,286 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-07-22 22:09:35,353 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-07-22 22:09:35,739 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 43 [2022-07-22 22:09:35,743 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:09:35,744 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 25 [2022-07-22 22:09:35,819 INFO L356 Elim1Store]: treesize reduction 20, result has 48.7 percent of original size [2022-07-22 22:09:35,819 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 44 treesize of output 53 [2022-07-22 22:09:35,824 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:09:35,825 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 20 [2022-07-22 22:09:35,839 WARN L234 Elim1Store]: Array PQE input equivalent to false [2022-07-22 22:09:35,843 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-07-22 22:09:36,066 INFO L356 Elim1Store]: treesize reduction 20, result has 48.7 percent of original size [2022-07-22 22:09:36,067 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 88 treesize of output 91 [2022-07-22 22:09:36,075 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:09:36,076 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 20 [2022-07-22 22:09:36,113 WARN L234 Elim1Store]: Array PQE input equivalent to false [2022-07-22 22:09:36,993 WARN L855 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_5059 (Array Int Int))) (= (store |c_old(#memory_int)| |c_memset_impl_#in~s.base| v_ArrVal_5059) |c_#memory_int|)) is different from true [2022-07-22 22:09:37,006 WARN L855 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_5059 (Array Int Int))) (= (store |c_old(#memory_int)| |c_my_memset_#in~s.base| v_ArrVal_5059) |c_#memory_int|)) is different from true [2022-07-22 22:09:37,028 INFO L356 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-07-22 22:09:37,029 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 36 treesize of output 38 [2022-07-22 22:09:37,434 INFO L134 CoverageAnalysis]: Checked inductivity of 158 backedges. 75 proven. 65 refuted. 0 times theorem prover too weak. 17 trivial. 1 not checked. [2022-07-22 22:09:37,434 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 22:09:37,690 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_5065 (Array Int Int))) (not (= (mod (select (select (store |c_#memory_int| |c_ULTIMATE.start_aws_byte_buf_advance_~output#1.base| v_ArrVal_5065) |c_ULTIMATE.start_aws_byte_buf_advance_~buffer#1.base|) |c_ULTIMATE.start_aws_byte_buf_advance_~buffer#1.offset|) 18446744073709551616) 0))) is different from false [2022-07-22 22:09:37,691 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1920424331] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 22:09:37,691 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-22 22:09:37,692 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 33] total 43 [2022-07-22 22:09:37,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [231537369] [2022-07-22 22:09:37,692 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-22 22:09:37,692 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2022-07-22 22:09:37,692 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:09:37,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2022-07-22 22:09:37,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=166, Invalid=1910, Unknown=6, NotChecked=270, Total=2352 [2022-07-22 22:09:37,693 INFO L87 Difference]: Start difference. First operand 359 states and 477 transitions. Second operand has 43 states, 40 states have (on average 3.85) internal successors, (154), 39 states have internal predecessors, (154), 14 states have call successors, (36), 9 states have call predecessors, (36), 11 states have return successors, (35), 13 states have call predecessors, (35), 14 states have call successors, (35) [2022-07-22 22:09:51,676 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_5059 (Array Int Int))) (= (store |c_old(#memory_int)| |c_my_memset_#in~s.base| v_ArrVal_5059) |c_#memory_int|)) (not (= |c_my_memset_#in~n| 32))) is different from true [2022-07-22 22:09:52,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 22:09:52,462 INFO L93 Difference]: Finished difference Result 590 states and 778 transitions. [2022-07-22 22:09:52,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-07-22 22:09:52,463 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 40 states have (on average 3.85) internal successors, (154), 39 states have internal predecessors, (154), 14 states have call successors, (36), 9 states have call predecessors, (36), 11 states have return successors, (35), 13 states have call predecessors, (35), 14 states have call successors, (35) Word has length 150 [2022-07-22 22:09:52,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 22:09:52,465 INFO L225 Difference]: With dead ends: 590 [2022-07-22 22:09:52,465 INFO L226 Difference]: Without dead ends: 469 [2022-07-22 22:09:52,467 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 250 GetRequests, 163 SyntacticMatches, 12 SemanticMatches, 75 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 1580 ImplicationChecksByTransitivity, 14.7s TimeCoverageRelationStatistics Valid=470, Invalid=4764, Unknown=38, NotChecked=580, Total=5852 [2022-07-22 22:09:52,484 INFO L413 NwaCegarLoop]: 231 mSDtfsCounter, 264 mSDsluCounter, 1506 mSDsCounter, 0 mSdLazyCounter, 2443 mSolverCounterSat, 146 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 266 SdHoareTripleChecker+Valid, 1737 SdHoareTripleChecker+Invalid, 4198 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 146 IncrementalHoareTripleChecker+Valid, 2443 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1609 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-07-22 22:09:52,484 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [266 Valid, 1737 Invalid, 4198 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [146 Valid, 2443 Invalid, 0 Unknown, 1609 Unchecked, 1.5s Time] [2022-07-22 22:09:52,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 469 states. [2022-07-22 22:09:52,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 469 to 445. [2022-07-22 22:09:52,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 445 states, 331 states have (on average 1.1238670694864048) internal successors, (372), 342 states have internal predecessors, (372), 77 states have call successors, (77), 30 states have call predecessors, (77), 36 states have return successors, (133), 72 states have call predecessors, (133), 76 states have call successors, (133) [2022-07-22 22:09:52,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 445 states to 445 states and 582 transitions. [2022-07-22 22:09:52,506 INFO L78 Accepts]: Start accepts. Automaton has 445 states and 582 transitions. Word has length 150 [2022-07-22 22:09:52,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 22:09:52,507 INFO L495 AbstractCegarLoop]: Abstraction has 445 states and 582 transitions. [2022-07-22 22:09:52,507 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 40 states have (on average 3.85) internal successors, (154), 39 states have internal predecessors, (154), 14 states have call successors, (36), 9 states have call predecessors, (36), 11 states have return successors, (35), 13 states have call predecessors, (35), 14 states have call successors, (35) [2022-07-22 22:09:52,507 INFO L276 IsEmpty]: Start isEmpty. Operand 445 states and 582 transitions. [2022-07-22 22:09:52,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2022-07-22 22:09:52,509 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:09:52,509 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 22:09:52,532 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2022-07-22 22:09:52,719 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:09:52,719 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:09:52,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:09:52,720 INFO L85 PathProgramCache]: Analyzing trace with hash -985042663, now seen corresponding path program 1 times [2022-07-22 22:09:52,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:09:52,720 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1314927581] [2022-07-22 22:09:52,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:09:52,720 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:09:52,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:52,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 22:09:52,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:52,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-22 22:09:52,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:52,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 22:09:52,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:52,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:09:52,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:52,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 22:09:52,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:52,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:09:52,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:52,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-22 22:09:52,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:52,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-22 22:09:52,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:52,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-22 22:09:52,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:52,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-22 22:09:52,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:52,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-07-22 22:09:52,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:52,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-22 22:09:52,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:52,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-22 22:09:52,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:52,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-07-22 22:09:52,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:52,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-07-22 22:09:52,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:52,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-07-22 22:09:52,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:52,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2022-07-22 22:09:52,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:52,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2022-07-22 22:09:52,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:53,016 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 181 trivial. 0 not checked. [2022-07-22 22:09:53,017 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:09:53,017 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1314927581] [2022-07-22 22:09:53,017 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1314927581] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 22:09:53,017 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 22:09:53,017 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-22 22:09:53,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1135003076] [2022-07-22 22:09:53,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 22:09:53,018 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-22 22:09:53,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:09:53,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-22 22:09:53,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-07-22 22:09:53,018 INFO L87 Difference]: Start difference. First operand 445 states and 582 transitions. Second operand has 10 states, 9 states have (on average 6.888888888888889) internal successors, (62), 6 states have internal predecessors, (62), 2 states have call successors, (19), 4 states have call predecessors, (19), 2 states have return successors, (18), 2 states have call predecessors, (18), 1 states have call successors, (18) [2022-07-22 22:09:53,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 22:09:53,505 INFO L93 Difference]: Finished difference Result 461 states and 598 transitions. [2022-07-22 22:09:53,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-22 22:09:53,505 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 6.888888888888889) internal successors, (62), 6 states have internal predecessors, (62), 2 states have call successors, (19), 4 states have call predecessors, (19), 2 states have return successors, (18), 2 states have call predecessors, (18), 1 states have call successors, (18) Word has length 152 [2022-07-22 22:09:53,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 22:09:53,507 INFO L225 Difference]: With dead ends: 461 [2022-07-22 22:09:53,507 INFO L226 Difference]: Without dead ends: 459 [2022-07-22 22:09:53,508 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2022-07-22 22:09:53,508 INFO L413 NwaCegarLoop]: 213 mSDtfsCounter, 127 mSDsluCounter, 744 mSDsCounter, 0 mSdLazyCounter, 786 mSolverCounterSat, 120 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 133 SdHoareTripleChecker+Valid, 957 SdHoareTripleChecker+Invalid, 906 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 120 IncrementalHoareTripleChecker+Valid, 786 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-22 22:09:53,508 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [133 Valid, 957 Invalid, 906 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [120 Valid, 786 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-22 22:09:53,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 459 states. [2022-07-22 22:09:53,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 459 to 450. [2022-07-22 22:09:53,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 450 states, 334 states have (on average 1.122754491017964) internal successors, (375), 345 states have internal predecessors, (375), 78 states have call successors, (78), 31 states have call predecessors, (78), 37 states have return successors, (134), 73 states have call predecessors, (134), 77 states have call successors, (134) [2022-07-22 22:09:53,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 450 states to 450 states and 587 transitions. [2022-07-22 22:09:53,530 INFO L78 Accepts]: Start accepts. Automaton has 450 states and 587 transitions. Word has length 152 [2022-07-22 22:09:53,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 22:09:53,530 INFO L495 AbstractCegarLoop]: Abstraction has 450 states and 587 transitions. [2022-07-22 22:09:53,531 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 6.888888888888889) internal successors, (62), 6 states have internal predecessors, (62), 2 states have call successors, (19), 4 states have call predecessors, (19), 2 states have return successors, (18), 2 states have call predecessors, (18), 1 states have call successors, (18) [2022-07-22 22:09:53,531 INFO L276 IsEmpty]: Start isEmpty. Operand 450 states and 587 transitions. [2022-07-22 22:09:53,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2022-07-22 22:09:53,532 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:09:53,533 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 22:09:53,533 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-07-22 22:09:53,533 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:09:53,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:09:53,533 INFO L85 PathProgramCache]: Analyzing trace with hash -72937408, now seen corresponding path program 2 times [2022-07-22 22:09:53,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:09:53,533 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2049813127] [2022-07-22 22:09:53,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:09:53,534 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:09:53,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:53,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 22:09:53,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:53,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-22 22:09:53,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:53,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 22:09:53,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:53,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:09:53,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:53,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 22:09:53,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:53,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:09:53,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:53,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-22 22:09:53,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:53,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-22 22:09:53,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:53,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-22 22:09:53,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:53,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-22 22:09:53,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:53,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-07-22 22:09:53,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:53,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-22 22:09:53,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:53,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-22 22:09:53,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:53,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-07-22 22:09:53,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:53,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-07-22 22:09:53,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:53,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:09:53,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:53,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:09:53,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:53,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-22 22:09:53,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:53,895 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 157 trivial. 0 not checked. [2022-07-22 22:09:53,896 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:09:53,896 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2049813127] [2022-07-22 22:09:53,896 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2049813127] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 22:09:53,896 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [15891971] [2022-07-22 22:09:53,896 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-22 22:09:53,896 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:09:53,896 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 22:09:53,897 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 22:09:53,898 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2022-07-22 22:09:55,406 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-22 22:09:55,406 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-22 22:09:55,420 INFO L263 TraceCheckSpWp]: Trace formula consists of 2911 conjuncts, 88 conjunts are in the unsatisfiable core [2022-07-22 22:09:55,424 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 22:09:55,473 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-07-22 22:09:55,686 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:09:55,686 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 23 [2022-07-22 22:09:55,688 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 16 [2022-07-22 22:09:55,737 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:09:55,738 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 23 [2022-07-22 22:09:55,804 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:09:55,805 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 23 [2022-07-22 22:09:56,131 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 118 proven. 18 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-07-22 22:09:56,131 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 22:09:57,482 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [15891971] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 22:09:57,483 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-22 22:09:57,483 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 16] total 27 [2022-07-22 22:09:57,483 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1270874678] [2022-07-22 22:09:57,483 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-22 22:09:57,483 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-07-22 22:09:57,483 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:09:57,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-07-22 22:09:57,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=959, Unknown=1, NotChecked=0, Total=1056 [2022-07-22 22:09:57,484 INFO L87 Difference]: Start difference. First operand 450 states and 587 transitions. Second operand has 27 states, 25 states have (on average 6.04) internal successors, (151), 24 states have internal predecessors, (151), 10 states have call successors, (36), 6 states have call predecessors, (36), 7 states have return successors, (35), 9 states have call predecessors, (35), 10 states have call successors, (35) [2022-07-22 22:10:00,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 22:10:00,376 INFO L93 Difference]: Finished difference Result 767 states and 1061 transitions. [2022-07-22 22:10:00,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-07-22 22:10:00,376 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 25 states have (on average 6.04) internal successors, (151), 24 states have internal predecessors, (151), 10 states have call successors, (36), 6 states have call predecessors, (36), 7 states have return successors, (35), 9 states have call predecessors, (35), 10 states have call successors, (35) Word has length 152 [2022-07-22 22:10:00,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 22:10:00,378 INFO L225 Difference]: With dead ends: 767 [2022-07-22 22:10:00,378 INFO L226 Difference]: Without dead ends: 575 [2022-07-22 22:10:00,379 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 311 GetRequests, 242 SyntacticMatches, 10 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1002 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=335, Invalid=3324, Unknown=1, NotChecked=0, Total=3660 [2022-07-22 22:10:00,380 INFO L413 NwaCegarLoop]: 317 mSDtfsCounter, 259 mSDsluCounter, 2786 mSDsCounter, 0 mSdLazyCounter, 3498 mSolverCounterSat, 185 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 307 SdHoareTripleChecker+Valid, 3103 SdHoareTripleChecker+Invalid, 4285 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 185 IncrementalHoareTripleChecker+Valid, 3498 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 602 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-07-22 22:10:00,380 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [307 Valid, 3103 Invalid, 4285 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [185 Valid, 3498 Invalid, 0 Unknown, 602 Unchecked, 2.2s Time] [2022-07-22 22:10:00,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 575 states. [2022-07-22 22:10:00,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 575 to 466. [2022-07-22 22:10:00,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 466 states, 347 states have (on average 1.1268011527377522) internal successors, (391), 358 states have internal predecessors, (391), 81 states have call successors, (81), 32 states have call predecessors, (81), 37 states have return successors, (140), 75 states have call predecessors, (140), 80 states have call successors, (140) [2022-07-22 22:10:00,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 466 states to 466 states and 612 transitions. [2022-07-22 22:10:00,404 INFO L78 Accepts]: Start accepts. Automaton has 466 states and 612 transitions. Word has length 152 [2022-07-22 22:10:00,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 22:10:00,405 INFO L495 AbstractCegarLoop]: Abstraction has 466 states and 612 transitions. [2022-07-22 22:10:00,405 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 25 states have (on average 6.04) internal successors, (151), 24 states have internal predecessors, (151), 10 states have call successors, (36), 6 states have call predecessors, (36), 7 states have return successors, (35), 9 states have call predecessors, (35), 10 states have call successors, (35) [2022-07-22 22:10:00,405 INFO L276 IsEmpty]: Start isEmpty. Operand 466 states and 612 transitions. [2022-07-22 22:10:00,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2022-07-22 22:10:00,407 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:10:00,407 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 22:10:00,432 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2022-07-22 22:10:00,630 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:10:00,630 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:10:00,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:10:00,631 INFO L85 PathProgramCache]: Analyzing trace with hash 1657527114, now seen corresponding path program 1 times [2022-07-22 22:10:00,631 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:10:00,631 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2001569266] [2022-07-22 22:10:00,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:10:00,631 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:10:00,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:10:00,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 22:10:00,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:10:00,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-22 22:10:00,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:10:00,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 22:10:00,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:10:00,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:10:00,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:10:00,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 22:10:00,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:10:00,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:10:00,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:10:00,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-22 22:10:00,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:10:00,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-22 22:10:00,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:10:00,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-22 22:10:00,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:10:00,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-22 22:10:00,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:10:00,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-22 22:10:00,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:10:00,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-22 22:10:00,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:10:00,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-07-22 22:10:00,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:10:00,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-07-22 22:10:00,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:10:00,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:10:00,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:10:00,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:10:00,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:10:00,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2022-07-22 22:10:00,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:10:00,956 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 143 trivial. 0 not checked. [2022-07-22 22:10:00,956 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:10:00,956 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2001569266] [2022-07-22 22:10:00,956 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2001569266] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 22:10:00,956 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1704783021] [2022-07-22 22:10:00,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:10:00,957 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:10:00,957 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 22:10:00,958 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 22:10:00,959 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2022-07-22 22:10:01,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:10:01,539 INFO L263 TraceCheckSpWp]: Trace formula consists of 2894 conjuncts, 57 conjunts are in the unsatisfiable core [2022-07-22 22:10:01,544 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 22:10:01,557 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-07-22 22:10:01,662 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-07-22 22:10:02,172 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 19 [2022-07-22 22:10:02,175 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 19 [2022-07-22 22:10:02,213 INFO L356 Elim1Store]: treesize reduction 13, result has 7.1 percent of original size [2022-07-22 22:10:02,213 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 11 [2022-07-22 22:10:02,215 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 10 [2022-07-22 22:10:02,240 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 90 proven. 0 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2022-07-22 22:10:02,240 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 22:10:02,240 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1704783021] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 22:10:02,240 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 22:10:02,240 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [14] total 29 [2022-07-22 22:10:02,240 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [471024182] [2022-07-22 22:10:02,240 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 22:10:02,240 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-07-22 22:10:02,241 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:10:02,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-07-22 22:10:02,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=722, Unknown=0, NotChecked=0, Total=812 [2022-07-22 22:10:02,241 INFO L87 Difference]: Start difference. First operand 466 states and 612 transitions. Second operand has 17 states, 16 states have (on average 5.375) internal successors, (86), 13 states have internal predecessors, (86), 6 states have call successors, (18), 4 states have call predecessors, (18), 6 states have return successors, (17), 7 states have call predecessors, (17), 6 states have call successors, (17) [2022-07-22 22:10:03,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 22:10:03,283 INFO L93 Difference]: Finished difference Result 822 states and 1117 transitions. [2022-07-22 22:10:03,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-22 22:10:03,283 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 5.375) internal successors, (86), 13 states have internal predecessors, (86), 6 states have call successors, (18), 4 states have call predecessors, (18), 6 states have return successors, (17), 7 states have call predecessors, (17), 6 states have call successors, (17) Word has length 153 [2022-07-22 22:10:03,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 22:10:03,285 INFO L225 Difference]: With dead ends: 822 [2022-07-22 22:10:03,285 INFO L226 Difference]: Without dead ends: 562 [2022-07-22 22:10:03,286 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 165 SyntacticMatches, 3 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 253 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=111, Invalid=881, Unknown=0, NotChecked=0, Total=992 [2022-07-22 22:10:03,287 INFO L413 NwaCegarLoop]: 323 mSDtfsCounter, 158 mSDsluCounter, 1347 mSDsCounter, 0 mSdLazyCounter, 1361 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 211 SdHoareTripleChecker+Valid, 1670 SdHoareTripleChecker+Invalid, 2019 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 1361 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 575 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-22 22:10:03,287 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [211 Valid, 1670 Invalid, 2019 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 1361 Invalid, 0 Unknown, 575 Unchecked, 0.9s Time] [2022-07-22 22:10:03,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 562 states. [2022-07-22 22:10:03,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 562 to 464. [2022-07-22 22:10:03,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 464 states, 341 states have (on average 1.1173020527859236) internal successors, (381), 351 states have internal predecessors, (381), 82 states have call successors, (82), 35 states have call predecessors, (82), 40 states have return successors, (136), 77 states have call predecessors, (136), 81 states have call successors, (136) [2022-07-22 22:10:03,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 464 states to 464 states and 599 transitions. [2022-07-22 22:10:03,313 INFO L78 Accepts]: Start accepts. Automaton has 464 states and 599 transitions. Word has length 153 [2022-07-22 22:10:03,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 22:10:03,313 INFO L495 AbstractCegarLoop]: Abstraction has 464 states and 599 transitions. [2022-07-22 22:10:03,313 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 5.375) internal successors, (86), 13 states have internal predecessors, (86), 6 states have call successors, (18), 4 states have call predecessors, (18), 6 states have return successors, (17), 7 states have call predecessors, (17), 6 states have call successors, (17) [2022-07-22 22:10:03,313 INFO L276 IsEmpty]: Start isEmpty. Operand 464 states and 599 transitions. [2022-07-22 22:10:03,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2022-07-22 22:10:03,315 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:10:03,315 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 22:10:03,336 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2022-07-22 22:10:03,531 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:10:03,531 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:10:03,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:10:03,531 INFO L85 PathProgramCache]: Analyzing trace with hash 1748475022, now seen corresponding path program 1 times [2022-07-22 22:10:03,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:10:03,531 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [455828479] [2022-07-22 22:10:03,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:10:03,531 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:10:03,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:10:03,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 22:10:03,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:10:03,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-22 22:10:03,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:10:03,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 22:10:03,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:10:03,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:10:03,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:10:03,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 22:10:03,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:10:03,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:10:03,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:10:03,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-22 22:10:03,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:10:03,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-22 22:10:03,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:10:03,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-22 22:10:03,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:10:03,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-22 22:10:03,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:10:03,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-07-22 22:10:03,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:10:03,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-22 22:10:03,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:10:03,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-22 22:10:03,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:10:03,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-07-22 22:10:03,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:10:03,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:10:03,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:10:03,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:10:03,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:10:03,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2022-07-22 22:10:03,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:10:03,851 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 155 trivial. 0 not checked. [2022-07-22 22:10:03,851 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:10:03,851 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [455828479] [2022-07-22 22:10:03,851 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [455828479] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 22:10:03,851 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [278704779] [2022-07-22 22:10:03,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:10:03,851 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:10:03,852 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 22:10:03,853 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 22:10:03,853 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2022-07-22 22:10:04,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:10:04,441 INFO L263 TraceCheckSpWp]: Trace formula consists of 2896 conjuncts, 100 conjunts are in the unsatisfiable core [2022-07-22 22:10:04,444 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 22:10:04,449 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-07-22 22:10:04,506 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-07-22 22:10:04,532 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 25 [2022-07-22 22:10:04,535 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:10:04,535 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 25 [2022-07-22 22:10:05,342 WARN L855 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_aws_byte_buf_advance_~buffer#1.base_BEFORE_CALL_10| Int) (|v_ULTIMATE.start_aws_byte_buf_advance_~output#1.base_BEFORE_CALL_25| Int)) (and (= (select (select |c_#memory_int| |v_ULTIMATE.start_aws_byte_buf_advance_~output#1.base_BEFORE_CALL_25|) 16) (select (select |c_#memory_int| |v_ULTIMATE.start_aws_byte_buf_advance_~buffer#1.base_BEFORE_CALL_10|) 16)) (not (= |v_ULTIMATE.start_aws_byte_buf_advance_~output#1.base_BEFORE_CALL_25| |v_ULTIMATE.start_aws_byte_buf_advance_~buffer#1.base_BEFORE_CALL_10|)))) is different from true [2022-07-22 22:10:10,712 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 123 proven. 12 refuted. 0 times theorem prover too weak. 28 trivial. 1 not checked. [2022-07-22 22:10:10,712 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 22:10:12,912 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_5958 (Array Int Int))) (not (= (mod (select (select (store |c_#memory_int| |c_ULTIMATE.start_aws_byte_buf_advance_~output#1.base| v_ArrVal_5958) |c_ULTIMATE.start_aws_byte_buf_advance_~buffer#1.base|) (+ 16 |c_ULTIMATE.start_aws_byte_buf_advance_~buffer#1.offset|)) 18446744073709551616) 0))) is different from false [2022-07-22 22:10:12,913 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [278704779] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 22:10:12,913 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-22 22:10:12,913 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 16] total 28 [2022-07-22 22:10:12,914 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2020961211] [2022-07-22 22:10:12,914 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-22 22:10:12,914 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-07-22 22:10:12,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:10:12,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-07-22 22:10:12,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=846, Unknown=3, NotChecked=118, Total=1056 [2022-07-22 22:10:12,915 INFO L87 Difference]: Start difference. First operand 464 states and 599 transitions. Second operand has 28 states, 25 states have (on average 5.6) internal successors, (140), 24 states have internal predecessors, (140), 9 states have call successors, (34), 7 states have call predecessors, (34), 7 states have return successors, (33), 7 states have call predecessors, (33), 9 states have call successors, (33) [2022-07-22 22:10:18,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 22:10:18,004 INFO L93 Difference]: Finished difference Result 707 states and 919 transitions. [2022-07-22 22:10:18,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-07-22 22:10:18,005 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 25 states have (on average 5.6) internal successors, (140), 24 states have internal predecessors, (140), 9 states have call successors, (34), 7 states have call predecessors, (34), 7 states have return successors, (33), 7 states have call predecessors, (33), 9 states have call successors, (33) Word has length 157 [2022-07-22 22:10:18,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 22:10:18,007 INFO L225 Difference]: With dead ends: 707 [2022-07-22 22:10:18,007 INFO L226 Difference]: Without dead ends: 476 [2022-07-22 22:10:18,008 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 249 GetRequests, 193 SyntacticMatches, 2 SemanticMatches, 54 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 673 ImplicationChecksByTransitivity, 12.1s TimeCoverageRelationStatistics Valid=261, Invalid=2601, Unknown=8, NotChecked=210, Total=3080 [2022-07-22 22:10:18,009 INFO L413 NwaCegarLoop]: 219 mSDtfsCounter, 203 mSDsluCounter, 1310 mSDsCounter, 0 mSdLazyCounter, 1789 mSolverCounterSat, 107 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 246 SdHoareTripleChecker+Valid, 1529 SdHoareTripleChecker+Invalid, 3587 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 107 IncrementalHoareTripleChecker+Valid, 1789 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1691 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-07-22 22:10:18,009 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [246 Valid, 1529 Invalid, 3587 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [107 Valid, 1789 Invalid, 0 Unknown, 1691 Unchecked, 1.1s Time] [2022-07-22 22:10:18,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 476 states. [2022-07-22 22:10:18,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 476 to 459. [2022-07-22 22:10:18,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 459 states, 336 states have (on average 1.1130952380952381) internal successors, (374), 346 states have internal predecessors, (374), 82 states have call successors, (82), 35 states have call predecessors, (82), 40 states have return successors, (136), 77 states have call predecessors, (136), 81 states have call successors, (136) [2022-07-22 22:10:18,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 459 states to 459 states and 592 transitions. [2022-07-22 22:10:18,033 INFO L78 Accepts]: Start accepts. Automaton has 459 states and 592 transitions. Word has length 157 [2022-07-22 22:10:18,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 22:10:18,034 INFO L495 AbstractCegarLoop]: Abstraction has 459 states and 592 transitions. [2022-07-22 22:10:18,034 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 25 states have (on average 5.6) internal successors, (140), 24 states have internal predecessors, (140), 9 states have call successors, (34), 7 states have call predecessors, (34), 7 states have return successors, (33), 7 states have call predecessors, (33), 9 states have call successors, (33) [2022-07-22 22:10:18,034 INFO L276 IsEmpty]: Start isEmpty. Operand 459 states and 592 transitions. [2022-07-22 22:10:18,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2022-07-22 22:10:18,036 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:10:18,036 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 3, 3, 3, 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] [2022-07-22 22:10:18,057 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2022-07-22 22:10:18,251 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:10:18,251 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:10:18,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:10:18,252 INFO L85 PathProgramCache]: Analyzing trace with hash 1137539253, now seen corresponding path program 1 times [2022-07-22 22:10:18,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:10:18,252 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [954379370] [2022-07-22 22:10:18,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:10:18,252 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:10:18,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:10:18,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 22:10:18,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:10:18,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-22 22:10:18,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:10:18,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 22:10:18,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:10:18,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:10:18,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:10:18,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 22:10:18,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:10:18,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:10:18,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:10:18,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-22 22:10:18,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:10:18,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-22 22:10:18,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:10:18,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-22 22:10:18,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:10:18,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-22 22:10:18,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:10:18,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-07-22 22:10:18,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:10:18,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-22 22:10:18,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:10:18,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-22 22:10:18,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:10:18,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-07-22 22:10:18,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:10:18,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-07-22 22:10:18,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:10:18,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-22 22:10:18,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:10:18,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-07-22 22:10:18,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:10:18,718 INFO L134 CoverageAnalysis]: Checked inductivity of 201 backedges. 16 proven. 38 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2022-07-22 22:10:18,718 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:10:18,719 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [954379370] [2022-07-22 22:10:18,719 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [954379370] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 22:10:18,719 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1368836998] [2022-07-22 22:10:18,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:10:18,719 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:10:18,719 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 22:10:18,720 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 22:10:18,721 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2022-07-22 22:10:19,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:10:19,365 INFO L263 TraceCheckSpWp]: Trace formula consists of 3003 conjuncts, 69 conjunts are in the unsatisfiable core [2022-07-22 22:10:19,368 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 22:10:19,621 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-07-22 22:10:19,621 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 22 [2022-07-22 22:10:19,624 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2022-07-22 22:10:20,396 INFO L134 CoverageAnalysis]: Checked inductivity of 201 backedges. 154 proven. 24 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2022-07-22 22:10:20,396 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 22:10:21,231 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_6254 (Array Int Int)) (|ULTIMATE.start_aws_byte_buf_advance_harness_~#output~0#1.base| Int)) (let ((.cse1 (select (store |c_#memory_int| |ULTIMATE.start_aws_byte_buf_advance_harness_~#output~0#1.base| v_ArrVal_6254) |c_ULTIMATE.start_aws_byte_buf_advance_harness_~#buf~3#1.base|))) (let ((.cse0 (mod (select .cse1 (+ |c_ULTIMATE.start_aws_byte_buf_advance_harness_~#buf~3#1.offset| 16)) 18446744073709551616))) (or (= .cse0 0) (not (= 0 (mod (select v_ArrVal_6254 |c_ULTIMATE.start_aws_byte_buf_advance_harness_~#output~0#1.offset|) 18446744073709551616))) (not (< .cse0 (mod (select .cse1 |c_ULTIMATE.start_aws_byte_buf_advance_harness_~#buf~3#1.offset|) 18446744073709551616))))))) is different from false [2022-07-22 22:10:21,241 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1368836998] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 22:10:21,241 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-22 22:10:21,242 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 20] total 35 [2022-07-22 22:10:21,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [277396036] [2022-07-22 22:10:21,244 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-22 22:10:21,244 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-07-22 22:10:21,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:10:21,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-07-22 22:10:21,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=161, Invalid=1912, Unknown=1, NotChecked=88, Total=2162 [2022-07-22 22:10:21,245 INFO L87 Difference]: Start difference. First operand 459 states and 592 transitions. Second operand has 35 states, 33 states have (on average 4.666666666666667) internal successors, (154), 32 states have internal predecessors, (154), 10 states have call successors, (34), 6 states have call predecessors, (34), 10 states have return successors, (33), 9 states have call predecessors, (33), 10 states have call successors, (33) [2022-07-22 22:10:27,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 22:10:27,080 INFO L93 Difference]: Finished difference Result 817 states and 1105 transitions. [2022-07-22 22:10:27,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-07-22 22:10:27,080 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 33 states have (on average 4.666666666666667) internal successors, (154), 32 states have internal predecessors, (154), 10 states have call successors, (34), 6 states have call predecessors, (34), 10 states have return successors, (33), 9 states have call predecessors, (33), 10 states have call successors, (33) Word has length 159 [2022-07-22 22:10:27,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 22:10:27,082 INFO L225 Difference]: With dead ends: 817 [2022-07-22 22:10:27,082 INFO L226 Difference]: Without dead ends: 564 [2022-07-22 22:10:27,084 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 342 GetRequests, 259 SyntacticMatches, 5 SemanticMatches, 78 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 1332 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=668, Invalid=5459, Unknown=39, NotChecked=154, Total=6320 [2022-07-22 22:10:27,084 INFO L413 NwaCegarLoop]: 232 mSDtfsCounter, 395 mSDsluCounter, 2284 mSDsCounter, 0 mSdLazyCounter, 6276 mSolverCounterSat, 400 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 398 SdHoareTripleChecker+Valid, 2516 SdHoareTripleChecker+Invalid, 7406 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 400 IncrementalHoareTripleChecker+Valid, 6276 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 730 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2022-07-22 22:10:27,085 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [398 Valid, 2516 Invalid, 7406 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [400 Valid, 6276 Invalid, 0 Unknown, 730 Unchecked, 4.0s Time] [2022-07-22 22:10:27,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 564 states. [2022-07-22 22:10:27,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 564 to 459. [2022-07-22 22:10:27,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 459 states, 336 states have (on average 1.1071428571428572) internal successors, (372), 346 states have internal predecessors, (372), 82 states have call successors, (82), 35 states have call predecessors, (82), 40 states have return successors, (135), 77 states have call predecessors, (135), 81 states have call successors, (135) [2022-07-22 22:10:27,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 459 states to 459 states and 589 transitions. [2022-07-22 22:10:27,113 INFO L78 Accepts]: Start accepts. Automaton has 459 states and 589 transitions. Word has length 159 [2022-07-22 22:10:27,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 22:10:27,113 INFO L495 AbstractCegarLoop]: Abstraction has 459 states and 589 transitions. [2022-07-22 22:10:27,113 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 33 states have (on average 4.666666666666667) internal successors, (154), 32 states have internal predecessors, (154), 10 states have call successors, (34), 6 states have call predecessors, (34), 10 states have return successors, (33), 9 states have call predecessors, (33), 10 states have call successors, (33) [2022-07-22 22:10:27,114 INFO L276 IsEmpty]: Start isEmpty. Operand 459 states and 589 transitions. [2022-07-22 22:10:27,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2022-07-22 22:10:27,115 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:10:27,115 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 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] [2022-07-22 22:10:27,137 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2022-07-22 22:10:27,337 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2022-07-22 22:10:27,337 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:10:27,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:10:27,338 INFO L85 PathProgramCache]: Analyzing trace with hash -1595947110, now seen corresponding path program 2 times [2022-07-22 22:10:27,338 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:10:27,338 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1654334118] [2022-07-22 22:10:27,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:10:27,338 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:10:28,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:10:28,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 22:10:28,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:10:28,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-22 22:10:28,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:10:28,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 22:10:28,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:10:28,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:10:28,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:10:28,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 22:10:28,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:10:28,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:10:28,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:10:28,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-22 22:10:28,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:10:28,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-22 22:10:28,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:10:28,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-22 22:10:28,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:10:28,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-22 22:10:28,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:10:28,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-22 22:10:28,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:10:28,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-07-22 22:10:28,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:10:28,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-07-22 22:10:28,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:10:28,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-07-22 22:10:28,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:10:28,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-07-22 22:10:28,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:10:28,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2022-07-22 22:10:28,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:10:28,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-07-22 22:10:28,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:10:28,983 INFO L134 CoverageAnalysis]: Checked inductivity of 205 backedges. 69 proven. 46 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2022-07-22 22:10:28,983 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:10:28,983 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1654334118] [2022-07-22 22:10:28,984 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1654334118] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 22:10:28,984 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [589583148] [2022-07-22 22:10:28,984 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-22 22:10:28,984 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:10:28,984 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 22:10:28,985 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 22:10:29,000 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2022-07-22 22:10:30,069 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-22 22:10:30,069 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-22 22:10:30,081 INFO L263 TraceCheckSpWp]: Trace formula consists of 3008 conjuncts, 131 conjunts are in the unsatisfiable core [2022-07-22 22:10:30,104 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 22:10:30,107 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-07-22 22:10:30,200 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-07-22 22:10:30,202 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-07-22 22:10:30,692 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-07-22 22:10:30,696 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 21 [2022-07-22 22:10:31,428 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-07-22 22:10:31,436 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-07-22 22:10:31,437 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2022-07-22 22:10:31,449 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-07-22 22:10:31,449 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 23 [2022-07-22 22:10:31,952 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 28 [2022-07-22 22:10:31,957 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 28 [2022-07-22 22:10:31,979 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:10:31,982 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 96 treesize of output 90 [2022-07-22 22:10:31,992 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:10:32,016 INFO L356 Elim1Store]: treesize reduction 26, result has 44.7 percent of original size [2022-07-22 22:10:32,016 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 114 treesize of output 122 [2022-07-22 22:10:32,019 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:10:32,038 INFO L356 Elim1Store]: treesize reduction 26, result has 44.7 percent of original size [2022-07-22 22:10:32,039 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 139 treesize of output 147 [2022-07-22 22:10:32,042 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 147 treesize of output 139 [2022-07-22 22:10:32,044 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 139 treesize of output 131 [2022-07-22 22:10:32,047 WARN L319 FreeRefinementEngine]: Global settings require throwing the following exception [2022-07-22 22:10:32,069 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2022-07-22 22:10:32,248 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2022-07-22 22:10:32,248 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: Should have been eliminated by DER at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.DerPreprocessor.(DerPreprocessor.java:113) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.ElimStorePlain.applyComplexEliminationRules(ElimStorePlain.java:353) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminate(DualJunctionSaa.java:190) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminateOne3(DualJunctionSaa.java:172) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminateOne2(DualJunctionSaa.java:151) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminateOne1(DualJunctionSaa.java:140) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminateOne0(DualJunctionSaa.java:124) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminateOne(DualJunctionSaa.java:108) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryExhaustivelyToEliminate(DualJunctionSaa.java:93) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminate(DualJunctionSaa.java:88) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToEliminateOne(QuantifierPusher.java:650) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.applyNewEliminationTechniquesExhaustively(QuantifierPusher.java:611) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.applyDualJunctionEliminationTechniques(QuantifierPusher.java:529) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToPushOverDualFiniteConnective(QuantifierPusher.java:333) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:187) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:1) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine$ApplicationTermTask.doStep(TermContextTransformationEngine.java:169) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:77) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:61) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:298) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:284) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.PartialQuantifierElimination.eliminate(PartialQuantifierElimination.java:90) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer$QuantifierEliminationPostprocessor.postprocess(IterativePredicateTransformer.java:238) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.applyPostprocessors(IterativePredicateTransformer.java:420) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.computeStrongestPostconditionSequence(IterativePredicateTransformer.java:199) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolantsUsingUnsatCore(TraceCheckSpWp.java:299) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolants(TraceCheckSpWp.java:185) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:163) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:108) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:266) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:147) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:248) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:409) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:300) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:260) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:173) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:152) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-07-22 22:10:32,252 INFO L158 Benchmark]: Toolchain (without parser) took 110938.12ms. Allocated memory was 104.9MB in the beginning and 708.8MB in the end (delta: 604.0MB). Free memory was 66.6MB in the beginning and 617.9MB in the end (delta: -551.4MB). Peak memory consumption was 454.3MB. Max. memory is 16.1GB. [2022-07-22 22:10:32,252 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 104.9MB. Free memory is still 61.5MB. There was no memory consumed. Max. memory is 16.1GB. [2022-07-22 22:10:32,252 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1606.55ms. Allocated memory was 104.9MB in the beginning and 186.6MB in the end (delta: 81.8MB). Free memory was 66.6MB in the beginning and 110.7MB in the end (delta: -44.1MB). Peak memory consumption was 65.3MB. Max. memory is 16.1GB. [2022-07-22 22:10:32,252 INFO L158 Benchmark]: Boogie Procedure Inliner took 143.68ms. Allocated memory is still 186.6MB. Free memory was 110.7MB in the beginning and 98.1MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-07-22 22:10:32,252 INFO L158 Benchmark]: Boogie Preprocessor took 78.42ms. Allocated memory is still 186.6MB. Free memory was 98.1MB in the beginning and 90.7MB in the end (delta: 7.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-07-22 22:10:32,253 INFO L158 Benchmark]: RCFGBuilder took 1170.21ms. Allocated memory is still 186.6MB. Free memory was 89.7MB in the beginning and 121.5MB in the end (delta: -31.7MB). Peak memory consumption was 35.8MB. Max. memory is 16.1GB. [2022-07-22 22:10:32,253 INFO L158 Benchmark]: TraceAbstraction took 107934.65ms. Allocated memory was 186.6MB in the beginning and 708.8MB in the end (delta: 522.2MB). Free memory was 120.4MB in the beginning and 617.9MB in the end (delta: -497.5MB). Peak memory consumption was 428.2MB. Max. memory is 16.1GB. [2022-07-22 22:10:32,253 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 104.9MB. Free memory is still 61.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1606.55ms. Allocated memory was 104.9MB in the beginning and 186.6MB in the end (delta: 81.8MB). Free memory was 66.6MB in the beginning and 110.7MB in the end (delta: -44.1MB). Peak memory consumption was 65.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 143.68ms. Allocated memory is still 186.6MB. Free memory was 110.7MB in the beginning and 98.1MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Preprocessor took 78.42ms. Allocated memory is still 186.6MB. Free memory was 98.1MB in the beginning and 90.7MB in the end (delta: 7.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * RCFGBuilder took 1170.21ms. Allocated memory is still 186.6MB. Free memory was 89.7MB in the beginning and 121.5MB in the end (delta: -31.7MB). Peak memory consumption was 35.8MB. Max. memory is 16.1GB. * TraceAbstraction took 107934.65ms. Allocated memory was 186.6MB in the beginning and 708.8MB in the end (delta: 522.2MB). Free memory was 120.4MB in the beginning and 617.9MB in the end (delta: -497.5MB). Peak memory consumption was 428.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: Should have been eliminated by DER de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: Should have been eliminated by DER: de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.DerPreprocessor.(DerPreprocessor.java:113) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2022-07-22 22:10:32,278 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/aws-c-common/aws_byte_buf_advance_harness.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --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 64bit --witnessprinter.graph.data.programhash 9a96b91703f0cc76adc9b0fdbd8386a96920c1be21a810b6415a59c2166f1461 --- Real Ultimate output --- This is Ultimate 0.2.2-?-791161d [2022-07-22 22:10:33,890 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-22 22:10:33,892 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-22 22:10:33,912 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-22 22:10:33,912 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-22 22:10:33,913 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-22 22:10:33,913 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-22 22:10:33,915 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-22 22:10:33,916 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-22 22:10:33,916 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-22 22:10:33,917 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-22 22:10:33,918 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-22 22:10:33,918 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-22 22:10:33,919 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-22 22:10:33,919 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-22 22:10:33,920 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-22 22:10:33,921 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-22 22:10:33,921 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-22 22:10:33,923 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-22 22:10:33,924 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-22 22:10:33,925 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-22 22:10:33,926 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-22 22:10:33,926 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-22 22:10:33,927 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-22 22:10:33,932 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-22 22:10:33,952 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-22 22:10:33,952 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-22 22:10:33,952 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-22 22:10:33,953 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-22 22:10:33,953 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-22 22:10:33,954 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-22 22:10:33,954 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-22 22:10:33,956 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-22 22:10:33,957 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-22 22:10:33,958 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-22 22:10:33,960 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-22 22:10:33,961 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-22 22:10:33,961 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-22 22:10:33,961 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-22 22:10:33,961 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-22 22:10:33,962 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-22 22:10:33,966 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-22 22:10:33,969 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Bitvector.epf [2022-07-22 22:10:33,997 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-22 22:10:33,998 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-22 22:10:33,998 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-22 22:10:33,998 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-22 22:10:33,999 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-22 22:10:33,999 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-22 22:10:33,999 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-22 22:10:33,999 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-22 22:10:34,000 INFO L138 SettingsManager]: * Use SBE=true [2022-07-22 22:10:34,000 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-22 22:10:34,000 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-22 22:10:34,000 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-22 22:10:34,001 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-22 22:10:34,001 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-22 22:10:34,001 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-07-22 22:10:34,001 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-07-22 22:10:34,001 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-07-22 22:10:34,001 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-22 22:10:34,001 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-22 22:10:34,002 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-22 22:10:34,002 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-22 22:10:34,002 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-22 22:10:34,002 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-22 22:10:34,002 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 22:10:34,002 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-22 22:10:34,002 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-22 22:10:34,003 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-22 22:10:34,003 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-07-22 22:10:34,003 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-07-22 22:10:34,003 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-22 22:10:34,003 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-22 22:10:34,003 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-22 22:10:34,004 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-07-22 22:10:34,004 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9a96b91703f0cc76adc9b0fdbd8386a96920c1be21a810b6415a59c2166f1461 [2022-07-22 22:10:34,265 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-22 22:10:34,284 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-22 22:10:34,286 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-22 22:10:34,287 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-22 22:10:34,288 INFO L275 PluginConnector]: CDTParser initialized [2022-07-22 22:10:34,289 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/aws-c-common/aws_byte_buf_advance_harness.i [2022-07-22 22:10:34,333 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/49b634b1e/d1c94205c7cb42e18a0a82a2f2dc2cd4/FLAG84ae262f0 [2022-07-22 22:10:34,957 INFO L306 CDTParser]: Found 1 translation units. [2022-07-22 22:10:34,957 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_byte_buf_advance_harness.i [2022-07-22 22:10:34,988 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/49b634b1e/d1c94205c7cb42e18a0a82a2f2dc2cd4/FLAG84ae262f0 [2022-07-22 22:10:35,311 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/49b634b1e/d1c94205c7cb42e18a0a82a2f2dc2cd4 [2022-07-22 22:10:35,314 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-22 22:10:35,315 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-22 22:10:35,316 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-22 22:10:35,316 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-22 22:10:35,318 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-22 22:10:35,318 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 10:10:35" (1/1) ... [2022-07-22 22:10:35,319 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@65751da4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 10:10:35, skipping insertion in model container [2022-07-22 22:10:35,319 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 10:10:35" (1/1) ... [2022-07-22 22:10:35,324 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-22 22:10:35,387 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-22 22:10:35,571 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_byte_buf_advance_harness.i[4494,4507] [2022-07-22 22:10:35,576 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_byte_buf_advance_harness.i[4554,4567] [2022-07-22 22:10:36,262 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:10:36,264 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:10:36,266 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:10:36,267 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:10:36,267 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:10:36,280 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:10:36,282 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:10:36,287 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:10:36,288 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:10:36,523 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-07-22 22:10:36,524 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-07-22 22:10:36,525 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-07-22 22:10:36,525 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-07-22 22:10:36,526 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-07-22 22:10:36,527 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-07-22 22:10:36,527 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-07-22 22:10:36,527 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-07-22 22:10:36,534 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-07-22 22:10:36,535 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-07-22 22:10:36,613 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-07-22 22:10:36,622 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator has thrown an exception: java.lang.ArithmeticException: BigInteger out of int range at java.base/java.math.BigInteger.intValueExact(BigInteger.java:4784) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.checkIfNecessaryMemoryModelAdaption(CHandler.java:1009) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:968) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:279) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1384) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:249) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.translateInitializer(CHandler.java:2978) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.handleIASTDeclarator(CHandler.java:2836) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:2138) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:143) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1135) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:211) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1081) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:232) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.chandler.FunctionHandler.handleFunctionDefinition(FunctionHandler.java:371) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1470) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:155) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.processTUchild(CHandler.java:3276) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:2361) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:601) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:134) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainTranslator.translate(MainTranslator.java:192) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainTranslator.run(MainTranslator.java:115) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainTranslator.(MainTranslator.java:93) at de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver.finish(CACSL2BoogieTranslatorObserver.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-07-22 22:10:36,626 INFO L158 Benchmark]: Toolchain (without parser) took 1310.58ms. Allocated memory was 60.8MB in the beginning and 75.5MB in the end (delta: 14.7MB). Free memory was 30.0MB in the beginning and 41.4MB in the end (delta: -11.5MB). Peak memory consumption was 16.6MB. Max. memory is 16.1GB. [2022-07-22 22:10:36,627 INFO L158 Benchmark]: CDTParser took 0.65ms. Allocated memory is still 60.8MB. Free memory was 42.0MB in the beginning and 42.0MB in the end (delta: 43.8kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-22 22:10:36,627 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1309.15ms. Allocated memory was 60.8MB in the beginning and 75.5MB in the end (delta: 14.7MB). Free memory was 29.8MB in the beginning and 41.4MB in the end (delta: -11.6MB). Peak memory consumption was 16.6MB. Max. memory is 16.1GB. [2022-07-22 22:10:36,628 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.65ms. Allocated memory is still 60.8MB. Free memory was 42.0MB in the beginning and 42.0MB in the end (delta: 43.8kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1309.15ms. Allocated memory was 60.8MB in the beginning and 75.5MB in the end (delta: 14.7MB). Free memory was 29.8MB in the beginning and 41.4MB in the end (delta: -11.6MB). Peak memory consumption was 16.6MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - ExceptionOrErrorResult: ArithmeticException: BigInteger out of int range de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: ArithmeticException: BigInteger out of int range: java.base/java.math.BigInteger.intValueExact(BigInteger.java:4784) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: ArithmeticException: BigInteger out of int range