./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/aws-c-common/aws_byte_cursor_advance_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 35987657 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_cursor_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 f26a5d85d152e590b5f8a93f229efbb28bdd5e77c34d7106bb5825fc4b732cf6 --- Real Ultimate output --- This is Ultimate 0.2.2-?-3598765 [2022-07-21 09:35:46,470 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-21 09:35:46,473 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-21 09:35:46,518 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-21 09:35:46,518 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-21 09:35:46,520 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-21 09:35:46,524 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-21 09:35:46,526 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-21 09:35:46,528 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-21 09:35:46,534 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-21 09:35:46,536 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-21 09:35:46,541 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-21 09:35:46,541 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-21 09:35:46,543 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-21 09:35:46,544 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-21 09:35:46,548 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-21 09:35:46,548 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-21 09:35:46,550 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-21 09:35:46,551 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-21 09:35:46,556 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-21 09:35:46,558 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-21 09:35:46,559 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-21 09:35:46,561 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-21 09:35:46,561 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-21 09:35:46,563 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-21 09:35:46,577 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-21 09:35:46,577 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-21 09:35:46,578 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-21 09:35:46,579 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-21 09:35:46,579 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-21 09:35:46,580 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-21 09:35:46,580 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-21 09:35:46,582 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-21 09:35:46,582 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-21 09:35:46,583 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-21 09:35:46,584 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-21 09:35:46,584 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-21 09:35:46,585 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-21 09:35:46,585 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-21 09:35:46,585 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-21 09:35:46,586 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-21 09:35:46,587 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-21 09:35:46,588 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-07-21 09:35:46,625 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-21 09:35:46,626 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-21 09:35:46,626 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-21 09:35:46,626 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-21 09:35:46,627 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-21 09:35:46,627 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-21 09:35:46,628 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-21 09:35:46,628 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-21 09:35:46,628 INFO L138 SettingsManager]: * Use SBE=true [2022-07-21 09:35:46,629 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-21 09:35:46,629 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-21 09:35:46,630 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-21 09:35:46,630 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-21 09:35:46,630 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-21 09:35:46,630 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-21 09:35:46,630 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-21 09:35:46,631 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-21 09:35:46,631 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-21 09:35:46,631 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-21 09:35:46,631 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-21 09:35:46,631 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-21 09:35:46,631 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 09:35:46,632 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-21 09:35:46,632 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-21 09:35:46,632 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-21 09:35:46,632 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-21 09:35:46,632 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-21 09:35:46,633 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-21 09:35:46,633 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-21 09:35:46,633 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-21 09:35:46,633 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f26a5d85d152e590b5f8a93f229efbb28bdd5e77c34d7106bb5825fc4b732cf6 [2022-07-21 09:35:46,948 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-21 09:35:46,967 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-21 09:35:46,970 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-21 09:35:46,971 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-21 09:35:46,973 INFO L275 PluginConnector]: CDTParser initialized [2022-07-21 09:35:46,974 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/aws-c-common/aws_byte_cursor_advance_harness.i [2022-07-21 09:35:47,029 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d65ab1960/eda6e6ab45c24cccac5dc761937c340f/FLAG8eb1f6f73 [2022-07-21 09:35:47,850 INFO L306 CDTParser]: Found 1 translation units. [2022-07-21 09:35:47,852 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_byte_cursor_advance_harness.i [2022-07-21 09:35:47,898 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d65ab1960/eda6e6ab45c24cccac5dc761937c340f/FLAG8eb1f6f73 [2022-07-21 09:35:48,009 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d65ab1960/eda6e6ab45c24cccac5dc761937c340f [2022-07-21 09:35:48,011 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-21 09:35:48,013 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-21 09:35:48,013 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-21 09:35:48,014 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-21 09:35:48,016 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-21 09:35:48,017 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 09:35:48" (1/1) ... [2022-07-21 09:35:48,018 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4444f91c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:35:48, skipping insertion in model container [2022-07-21 09:35:48,018 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 09:35:48" (1/1) ... [2022-07-21 09:35:48,024 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-21 09:35:48,108 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-21 09:35:48,367 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_cursor_advance_harness.i[4497,4510] [2022-07-21 09:35:48,375 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_cursor_advance_harness.i[4557,4570] [2022-07-21 09:35:49,148 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:35:49,151 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:35:49,153 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:35:49,154 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:35:49,156 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:35:49,172 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:35:49,175 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:35:49,177 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:35:49,178 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:35:49,459 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-07-21 09:35:49,461 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-07-21 09:35:49,462 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-07-21 09:35:49,465 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-07-21 09:35:49,469 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-07-21 09:35:49,473 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-07-21 09:35:49,474 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-07-21 09:35:49,475 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-07-21 09:35:49,477 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-07-21 09:35:49,478 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-07-21 09:35:49,615 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-07-21 09:35:49,681 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:35:49,682 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:35:49,768 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 09:35:49,827 INFO L203 MainTranslator]: Completed pre-run [2022-07-21 09:35:49,850 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_cursor_advance_harness.i[4497,4510] [2022-07-21 09:35:49,852 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_cursor_advance_harness.i[4557,4570] [2022-07-21 09:35:49,900 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:35:49,900 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:35:49,901 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:35:49,902 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:35:49,902 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:35:49,918 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:35:49,924 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:35:49,925 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:35:49,933 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:35:49,962 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-07-21 09:35:49,963 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-07-21 09:35:49,964 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-07-21 09:35:49,964 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-07-21 09:35:49,965 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-07-21 09:35:49,965 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-07-21 09:35:49,966 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-07-21 09:35:49,966 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-07-21 09:35:49,966 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-07-21 09:35:49,967 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-07-21 09:35:49,997 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-07-21 09:35:50,057 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:35:50,057 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:35:50,097 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 09:35:50,402 INFO L208 MainTranslator]: Completed translation [2022-07-21 09:35:50,402 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:35:50 WrapperNode [2022-07-21 09:35:50,402 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-21 09:35:50,403 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-21 09:35:50,403 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-21 09:35:50,404 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-21 09:35:50,409 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:35:50" (1/1) ... [2022-07-21 09:35:50,525 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:35:50" (1/1) ... [2022-07-21 09:35:50,578 INFO L137 Inliner]: procedures = 690, calls = 2642, calls flagged for inlining = 60, calls inlined = 7, statements flattened = 882 [2022-07-21 09:35:50,578 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-21 09:35:50,579 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-21 09:35:50,579 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-21 09:35:50,579 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-21 09:35:50,587 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:35:50" (1/1) ... [2022-07-21 09:35:50,587 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:35:50" (1/1) ... [2022-07-21 09:35:50,594 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:35:50" (1/1) ... [2022-07-21 09:35:50,595 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:35:50" (1/1) ... [2022-07-21 09:35:50,621 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:35:50" (1/1) ... [2022-07-21 09:35:50,661 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:35:50" (1/1) ... [2022-07-21 09:35:50,666 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:35:50" (1/1) ... [2022-07-21 09:35:50,673 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-21 09:35:50,674 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-21 09:35:50,674 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-21 09:35:50,674 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-21 09:35:50,675 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:35:50" (1/1) ... [2022-07-21 09:35:50,680 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 09:35:50,689 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 09:35:50,704 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) [2022-07-21 09:35:50,730 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 [2022-07-21 09:35:50,749 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_cursor_is_valid [2022-07-21 09:35:50,750 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_cursor_is_valid [2022-07-21 09:35:50,750 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-21 09:35:50,750 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2022-07-21 09:35:50,750 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2022-07-21 09:35:50,751 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-21 09:35:50,751 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-07-21 09:35:50,751 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-07-21 09:35:50,751 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-21 09:35:50,752 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-21 09:35:50,752 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-21 09:35:50,753 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-21 09:35:50,753 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-21 09:35:50,753 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2022-07-21 09:35:50,753 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2022-07-21 09:35:50,754 INFO L130 BoogieDeclarations]: Found specification of procedure assert_byte_from_buffer_matches [2022-07-21 09:35:50,754 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_byte_from_buffer_matches [2022-07-21 09:35:50,754 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-07-21 09:35:50,754 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-07-21 09:35:50,754 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-21 09:35:50,755 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-07-21 09:35:50,755 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-07-21 09:35:50,755 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-21 09:35:50,755 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-21 09:35:51,007 INFO L234 CfgBuilder]: Building ICFG [2022-07-21 09:35:51,009 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-21 09:35:51,992 INFO L275 CfgBuilder]: Performing block encoding [2022-07-21 09:35:51,997 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-21 09:35:51,998 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-21 09:35:52,000 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 09:35:51 BoogieIcfgContainer [2022-07-21 09:35:52,000 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-21 09:35:52,001 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-21 09:35:52,001 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-21 09:35:52,004 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-21 09:35:52,004 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 09:35:48" (1/3) ... [2022-07-21 09:35:52,005 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e2b04f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 09:35:52, skipping insertion in model container [2022-07-21 09:35:52,005 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:35:50" (2/3) ... [2022-07-21 09:35:52,005 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e2b04f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 09:35:52, skipping insertion in model container [2022-07-21 09:35:52,005 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 09:35:51" (3/3) ... [2022-07-21 09:35:52,006 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_byte_cursor_advance_harness.i [2022-07-21 09:35:52,018 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-21 09:35:52,019 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-21 09:35:52,060 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-21 09:35:52,065 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@273cf650, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@66c5ac54 [2022-07-21 09:35:52,065 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-21 09:35:52,069 INFO L276 IsEmpty]: Start isEmpty. Operand has 90 states, 60 states have (on average 1.2666666666666666) internal successors, (76), 61 states have internal predecessors, (76), 22 states have call successors, (22), 6 states have call predecessors, (22), 6 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2022-07-21 09:35:52,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-07-21 09:35:52,077 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:35:52,078 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-21 09:35:52,078 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:35:52,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:35:52,083 INFO L85 PathProgramCache]: Analyzing trace with hash 1865164224, now seen corresponding path program 1 times [2022-07-21 09:35:52,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:35:52,091 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [236391315] [2022-07-21 09:35:52,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:35:52,092 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:35:52,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:35:52,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 09:35:52,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:35:52,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-21 09:35:52,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:35:52,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-21 09:35:52,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:35:52,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-21 09:35:52,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:35:52,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-07-21 09:35:52,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:35:52,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-07-21 09:35:52,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:35:52,750 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-07-21 09:35:52,750 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:35:52,751 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [236391315] [2022-07-21 09:35:52,752 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [236391315] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:35:52,754 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:35:52,755 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-21 09:35:52,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1678029519] [2022-07-21 09:35:52,758 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:35:52,763 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-21 09:35:52,763 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:35:52,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-21 09:35:52,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-21 09:35:52,794 INFO L87 Difference]: Start difference. First operand has 90 states, 60 states have (on average 1.2666666666666666) internal successors, (76), 61 states have internal predecessors, (76), 22 states have call successors, (22), 6 states have call predecessors, (22), 6 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) Second operand has 2 states, 2 states have (on average 11.5) internal successors, (23), 2 states have internal predecessors, (23), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-07-21 09:35:52,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:35:52,843 INFO L93 Difference]: Finished difference Result 170 states and 243 transitions. [2022-07-21 09:35:52,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-21 09:35:52,845 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 11.5) internal successors, (23), 2 states have internal predecessors, (23), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 47 [2022-07-21 09:35:52,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:35:52,855 INFO L225 Difference]: With dead ends: 170 [2022-07-21 09:35:52,855 INFO L226 Difference]: Without dead ends: 80 [2022-07-21 09:35:52,859 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-21 09:35:52,867 INFO L413 NwaCegarLoop]: 118 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 118 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 09:35:52,868 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 118 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 09:35:52,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2022-07-21 09:35:52,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80. [2022-07-21 09:35:52,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 52 states have (on average 1.2307692307692308) internal successors, (64), 54 states have internal predecessors, (64), 22 states have call successors, (22), 6 states have call predecessors, (22), 5 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2022-07-21 09:35:52,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 105 transitions. [2022-07-21 09:35:52,902 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 105 transitions. Word has length 47 [2022-07-21 09:35:52,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:35:52,904 INFO L495 AbstractCegarLoop]: Abstraction has 80 states and 105 transitions. [2022-07-21 09:35:52,904 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 11.5) internal successors, (23), 2 states have internal predecessors, (23), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-07-21 09:35:52,904 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 105 transitions. [2022-07-21 09:35:52,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-07-21 09:35:52,906 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:35:52,906 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-21 09:35:52,907 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-21 09:35:52,907 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:35:52,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:35:52,907 INFO L85 PathProgramCache]: Analyzing trace with hash 866728124, now seen corresponding path program 1 times [2022-07-21 09:35:52,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:35:52,908 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [547285888] [2022-07-21 09:35:52,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:35:52,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:35:53,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:35:53,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 09:35:53,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:35:53,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-21 09:35:53,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:35:53,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-21 09:35:53,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:35:53,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-21 09:35:53,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:35:53,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-07-21 09:35:53,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:35:53,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-07-21 09:35:53,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:35:53,234 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-07-21 09:35:53,234 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:35:53,234 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [547285888] [2022-07-21 09:35:53,234 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [547285888] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 09:35:53,235 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1055835688] [2022-07-21 09:35:53,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:35:53,235 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:35:53,235 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 09:35:53,237 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) [2022-07-21 09:35:53,238 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-21 09:35:53,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:35:53,731 INFO L263 TraceCheckSpWp]: Trace formula consists of 2490 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-21 09:35:53,738 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 09:35:53,878 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-07-21 09:35:53,878 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 09:35:53,879 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1055835688] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:35:53,879 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 09:35:53,879 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [5] total 9 [2022-07-21 09:35:53,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [658964706] [2022-07-21 09:35:53,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:35:53,881 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-21 09:35:53,882 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:35:53,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-21 09:35:53,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-07-21 09:35:53,883 INFO L87 Difference]: Start difference. First operand 80 states and 105 transitions. Second operand has 6 states, 6 states have (on average 4.5) internal successors, (27), 6 states have internal predecessors, (27), 2 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-07-21 09:35:54,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:35:54,046 INFO L93 Difference]: Finished difference Result 146 states and 197 transitions. [2022-07-21 09:35:54,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-21 09:35:54,047 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.5) internal successors, (27), 6 states have internal predecessors, (27), 2 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 47 [2022-07-21 09:35:54,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:35:54,049 INFO L225 Difference]: With dead ends: 146 [2022-07-21 09:35:54,050 INFO L226 Difference]: Without dead ends: 83 [2022-07-21 09:35:54,051 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2022-07-21 09:35:54,055 INFO L413 NwaCegarLoop]: 77 mSDtfsCounter, 128 mSDsluCounter, 181 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 128 SdHoareTripleChecker+Valid, 258 SdHoareTripleChecker+Invalid, 143 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 09:35:54,056 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [128 Valid, 258 Invalid, 143 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 09:35:54,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2022-07-21 09:35:54,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 83. [2022-07-21 09:35:54,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 54 states have (on average 1.2222222222222223) internal successors, (66), 57 states have internal predecessors, (66), 22 states have call successors, (22), 6 states have call predecessors, (22), 6 states have return successors, (23), 19 states have call predecessors, (23), 19 states have call successors, (23) [2022-07-21 09:35:54,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 111 transitions. [2022-07-21 09:35:54,070 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 111 transitions. Word has length 47 [2022-07-21 09:35:54,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:35:54,070 INFO L495 AbstractCegarLoop]: Abstraction has 83 states and 111 transitions. [2022-07-21 09:35:54,070 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.5) internal successors, (27), 6 states have internal predecessors, (27), 2 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-07-21 09:35:54,071 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 111 transitions. [2022-07-21 09:35:54,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2022-07-21 09:35:54,072 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:35:54,072 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-21 09:35:54,100 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-07-21 09:35:54,296 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 [2022-07-21 09:35:54,296 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:35:54,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:35:54,297 INFO L85 PathProgramCache]: Analyzing trace with hash -912055711, now seen corresponding path program 1 times [2022-07-21 09:35:54,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:35:54,297 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [617507046] [2022-07-21 09:35:54,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:35:54,297 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:35:54,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:35:54,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 09:35:54,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:35:54,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-21 09:35:54,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:35:54,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 09:35:54,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:35:54,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-21 09:35:54,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:35:54,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-07-21 09:35:54,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:35:54,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-21 09:35:54,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:35:54,591 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-07-21 09:35:54,593 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:35:54,593 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [617507046] [2022-07-21 09:35:54,593 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [617507046] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 09:35:54,594 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1138275575] [2022-07-21 09:35:54,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:35:54,597 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:35:54,598 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 09:35:54,600 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) [2022-07-21 09:35:54,601 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-21 09:35:55,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:35:55,022 INFO L263 TraceCheckSpWp]: Trace formula consists of 2495 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-21 09:35:55,026 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 09:35:55,112 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-21 09:35:55,112 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 09:35:55,113 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1138275575] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:35:55,113 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 09:35:55,113 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 11 [2022-07-21 09:35:55,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1444123186] [2022-07-21 09:35:55,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:35:55,114 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 09:35:55,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:35:55,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 09:35:55,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2022-07-21 09:35:55,115 INFO L87 Difference]: Start difference. First operand 83 states and 111 transitions. Second operand has 7 states, 6 states have (on average 6.0) internal successors, (36), 7 states have internal predecessors, (36), 3 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (6), 2 states have call predecessors, (6), 3 states have call successors, (6) [2022-07-21 09:35:55,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:35:55,299 INFO L93 Difference]: Finished difference Result 141 states and 189 transitions. [2022-07-21 09:35:55,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-21 09:35:55,299 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 6.0) internal successors, (36), 7 states have internal predecessors, (36), 3 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (6), 2 states have call predecessors, (6), 3 states have call successors, (6) Word has length 49 [2022-07-21 09:35:55,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:35:55,300 INFO L225 Difference]: With dead ends: 141 [2022-07-21 09:35:55,301 INFO L226 Difference]: Without dead ends: 83 [2022-07-21 09:35:55,301 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2022-07-21 09:35:55,302 INFO L413 NwaCegarLoop]: 75 mSDtfsCounter, 145 mSDsluCounter, 176 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 145 SdHoareTripleChecker+Valid, 251 SdHoareTripleChecker+Invalid, 141 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 09:35:55,302 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [145 Valid, 251 Invalid, 141 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 09:35:55,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2022-07-21 09:35:55,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 83. [2022-07-21 09:35:55,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 54 states have (on average 1.2222222222222223) internal successors, (66), 57 states have internal predecessors, (66), 22 states have call successors, (22), 6 states have call predecessors, (22), 6 states have return successors, (21), 19 states have call predecessors, (21), 19 states have call successors, (21) [2022-07-21 09:35:55,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 109 transitions. [2022-07-21 09:35:55,311 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 109 transitions. Word has length 49 [2022-07-21 09:35:55,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:35:55,312 INFO L495 AbstractCegarLoop]: Abstraction has 83 states and 109 transitions. [2022-07-21 09:35:55,312 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 6.0) internal successors, (36), 7 states have internal predecessors, (36), 3 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (6), 2 states have call predecessors, (6), 3 states have call successors, (6) [2022-07-21 09:35:55,312 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 109 transitions. [2022-07-21 09:35:55,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-07-21 09:35:55,326 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:35:55,326 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-21 09:35:55,367 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-21 09:35:55,539 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 [2022-07-21 09:35:55,540 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:35:55,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:35:55,540 INFO L85 PathProgramCache]: Analyzing trace with hash -633300053, now seen corresponding path program 1 times [2022-07-21 09:35:55,540 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:35:55,540 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [830715487] [2022-07-21 09:35:55,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:35:55,541 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:35:55,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:35:55,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 09:35:55,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:35:55,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-21 09:35:55,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:35:55,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 09:35:55,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:35:55,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-21 09:35:55,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:35:55,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-21 09:35:55,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:35:55,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-21 09:35:55,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:35:55,917 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-07-21 09:35:55,917 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:35:55,918 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [830715487] [2022-07-21 09:35:55,918 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [830715487] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:35:55,918 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:35:55,918 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-21 09:35:55,918 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [534301316] [2022-07-21 09:35:55,919 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:35:55,919 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-21 09:35:55,919 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:35:55,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-21 09:35:55,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-21 09:35:55,920 INFO L87 Difference]: Start difference. First operand 83 states and 109 transitions. Second operand has 8 states, 7 states have (on average 4.142857142857143) internal successors, (29), 6 states have internal predecessors, (29), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) [2022-07-21 09:35:55,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:35:55,990 INFO L93 Difference]: Finished difference Result 95 states and 125 transitions. [2022-07-21 09:35:55,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-21 09:35:55,991 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 4.142857142857143) internal successors, (29), 6 states have internal predecessors, (29), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) Word has length 53 [2022-07-21 09:35:55,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:35:55,992 INFO L225 Difference]: With dead ends: 95 [2022-07-21 09:35:55,993 INFO L226 Difference]: Without dead ends: 93 [2022-07-21 09:35:55,993 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-07-21 09:35:55,994 INFO L413 NwaCegarLoop]: 105 mSDtfsCounter, 16 mSDsluCounter, 586 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 691 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 09:35:55,994 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 691 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 09:35:55,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2022-07-21 09:35:56,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 92. [2022-07-21 09:35:56,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 60 states have (on average 1.2) internal successors, (72), 64 states have internal predecessors, (72), 23 states have call successors, (23), 7 states have call predecessors, (23), 8 states have return successors, (27), 20 states have call predecessors, (27), 20 states have call successors, (27) [2022-07-21 09:35:56,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 122 transitions. [2022-07-21 09:35:56,008 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 122 transitions. Word has length 53 [2022-07-21 09:35:56,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:35:56,008 INFO L495 AbstractCegarLoop]: Abstraction has 92 states and 122 transitions. [2022-07-21 09:35:56,008 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 4.142857142857143) internal successors, (29), 6 states have internal predecessors, (29), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) [2022-07-21 09:35:56,009 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 122 transitions. [2022-07-21 09:35:56,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-07-21 09:35:56,010 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:35:56,010 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-21 09:35:56,011 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-21 09:35:56,011 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:35:56,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:35:56,011 INFO L85 PathProgramCache]: Analyzing trace with hash 1847539699, now seen corresponding path program 1 times [2022-07-21 09:35:56,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:35:56,012 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1513778130] [2022-07-21 09:35:56,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:35:56,012 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:35:56,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:35:56,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 09:35:56,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:35:56,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-21 09:35:56,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:35:56,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 09:35:56,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:35:56,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-21 09:35:56,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:35:56,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-21 09:35:56,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:35:56,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-21 09:35:56,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:35:56,697 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 12 proven. 5 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-07-21 09:35:56,697 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:35:56,697 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1513778130] [2022-07-21 09:35:56,697 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1513778130] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 09:35:56,697 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1753262614] [2022-07-21 09:35:56,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:35:56,697 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:35:56,698 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 09:35:56,700 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) [2022-07-21 09:35:56,701 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-21 09:35:57,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:35:57,116 INFO L263 TraceCheckSpWp]: Trace formula consists of 2517 conjuncts, 66 conjunts are in the unsatisfiable core [2022-07-21 09:35:57,123 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 09:35:57,160 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-07-21 09:35:57,717 INFO L356 Elim1Store]: treesize reduction 60, result has 24.1 percent of original size [2022-07-21 09:35:57,717 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 29 treesize of output 37 [2022-07-21 09:35:57,816 INFO L356 Elim1Store]: treesize reduction 36, result has 34.5 percent of original size [2022-07-21 09:35:57,817 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 22 treesize of output 33 [2022-07-21 09:35:58,274 INFO L356 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2022-07-21 09:35:58,274 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 16 treesize of output 18 [2022-07-21 09:35:58,326 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 [2022-07-21 09:35:58,603 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 5 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 09:35:58,604 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 09:35:58,797 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_270 (Array Int Int))) (let ((.cse0 (select (select (store |c_#memory_int| |c_ULTIMATE.start_aws_byte_cursor_advance_~#rv~6#1.base| v_ArrVal_270) |c_ULTIMATE.start_aws_byte_cursor_advance_~cursor#1.base|) |c_ULTIMATE.start_aws_byte_cursor_advance_~cursor#1.offset|))) (<= .cse0 (* 18446744073709551616 (div .cse0 18446744073709551616))))) is different from false [2022-07-21 09:35:58,903 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1753262614] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 09:35:58,904 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-21 09:35:58,904 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 19] total 33 [2022-07-21 09:35:58,904 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1461869084] [2022-07-21 09:35:58,904 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-21 09:35:58,905 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-07-21 09:35:58,905 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:35:58,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-07-21 09:35:58,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=156, Invalid=1107, Unknown=1, NotChecked=68, Total=1332 [2022-07-21 09:35:58,906 INFO L87 Difference]: Start difference. First operand 92 states and 122 transitions. Second operand has 33 states, 30 states have (on average 2.6666666666666665) internal successors, (80), 30 states have internal predecessors, (80), 10 states have call successors, (13), 6 states have call predecessors, (13), 8 states have return successors, (12), 7 states have call predecessors, (12), 9 states have call successors, (12) [2022-07-21 09:36:00,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:36:00,266 INFO L93 Difference]: Finished difference Result 261 states and 360 transitions. [2022-07-21 09:36:00,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-07-21 09:36:00,267 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 30 states have (on average 2.6666666666666665) internal successors, (80), 30 states have internal predecessors, (80), 10 states have call successors, (13), 6 states have call predecessors, (13), 8 states have return successors, (12), 7 states have call predecessors, (12), 9 states have call successors, (12) Word has length 57 [2022-07-21 09:36:00,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:36:00,269 INFO L225 Difference]: With dead ends: 261 [2022-07-21 09:36:00,270 INFO L226 Difference]: Without dead ends: 196 [2022-07-21 09:36:00,271 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 69 SyntacticMatches, 8 SemanticMatches, 49 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 851 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=299, Invalid=2154, Unknown=1, NotChecked=96, Total=2550 [2022-07-21 09:36:00,272 INFO L413 NwaCegarLoop]: 126 mSDtfsCounter, 127 mSDsluCounter, 1014 mSDsCounter, 0 mSdLazyCounter, 826 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 158 SdHoareTripleChecker+Valid, 1140 SdHoareTripleChecker+Invalid, 1335 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 826 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 465 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-21 09:36:00,272 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [158 Valid, 1140 Invalid, 1335 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 826 Invalid, 0 Unknown, 465 Unchecked, 0.8s Time] [2022-07-21 09:36:00,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2022-07-21 09:36:00,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 156. [2022-07-21 09:36:00,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156 states, 108 states have (on average 1.2222222222222223) internal successors, (132), 111 states have internal predecessors, (132), 34 states have call successors, (34), 13 states have call predecessors, (34), 13 states have return successors, (42), 31 states have call predecessors, (42), 31 states have call successors, (42) [2022-07-21 09:36:00,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 208 transitions. [2022-07-21 09:36:00,293 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 208 transitions. Word has length 57 [2022-07-21 09:36:00,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:36:00,294 INFO L495 AbstractCegarLoop]: Abstraction has 156 states and 208 transitions. [2022-07-21 09:36:00,294 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 30 states have (on average 2.6666666666666665) internal successors, (80), 30 states have internal predecessors, (80), 10 states have call successors, (13), 6 states have call predecessors, (13), 8 states have return successors, (12), 7 states have call predecessors, (12), 9 states have call successors, (12) [2022-07-21 09:36:00,294 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 208 transitions. [2022-07-21 09:36:00,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-07-21 09:36:00,296 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:36:00,296 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-21 09:36:00,330 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-21 09:36:00,512 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:36:00,513 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:36:00,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:36:00,513 INFO L85 PathProgramCache]: Analyzing trace with hash 259191797, now seen corresponding path program 1 times [2022-07-21 09:36:00,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:36:00,513 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1064767175] [2022-07-21 09:36:00,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:36:00,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:36:00,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:36:01,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 09:36:01,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:36:01,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-21 09:36:01,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:36:01,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 09:36:01,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:36:01,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-21 09:36:01,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:36:01,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-21 09:36:01,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:36:01,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-21 09:36:01,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:36:01,290 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 12 proven. 5 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-07-21 09:36:01,290 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:36:01,290 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1064767175] [2022-07-21 09:36:01,290 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1064767175] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 09:36:01,290 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1040841512] [2022-07-21 09:36:01,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:36:01,291 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:36:01,291 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 09:36:01,294 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) [2022-07-21 09:36:01,296 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-21 09:36:07,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:36:07,059 INFO L263 TraceCheckSpWp]: Trace formula consists of 2547 conjuncts, 80 conjunts are in the unsatisfiable core [2022-07-21 09:36:07,064 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 09:36:07,072 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-07-21 09:36:07,510 INFO L356 Elim1Store]: treesize reduction 60, result has 24.1 percent of original size [2022-07-21 09:36:07,511 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 29 treesize of output 37 [2022-07-21 09:36:07,604 INFO L356 Elim1Store]: treesize reduction 36, result has 34.5 percent of original size [2022-07-21 09:36:07,604 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 22 treesize of output 33 [2022-07-21 09:36:08,031 INFO L356 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2022-07-21 09:36:08,032 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 16 treesize of output 18 [2022-07-21 09:36:08,147 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 57 treesize of output 46 [2022-07-21 09:36:08,156 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 09:36:08,160 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 54 treesize of output 47 [2022-07-21 09:36:08,167 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 09:36:08,170 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 43 [2022-07-21 09:36:08,849 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 5 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 09:36:08,850 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 09:36:09,082 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-21 09:36:09,082 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 1 case distinctions, treesize of input 33 treesize of output 34 [2022-07-21 09:36:09,092 WARN L833 $PredicateComparison]: unable to prove that (or (forall ((v_arrayElimArr_2 (Array Int Int)) (|ULTIMATE.start_aws_byte_cursor_advance_~#rv~6#1.offset| Int)) (or (not (= (select v_arrayElimArr_2 |ULTIMATE.start_aws_byte_cursor_advance_~#rv~6#1.offset|) |c_ULTIMATE.start_aws_byte_cursor_advance_~len#1|)) (<= |c_ULTIMATE.start_aws_byte_cursor_advance_~len#1| (let ((.cse0 (select (select (store |c_#memory_int| |c_ULTIMATE.start_aws_byte_cursor_advance_~#rv~6#1.base| v_arrayElimArr_2) |c_ULTIMATE.start_aws_byte_cursor_advance_~cursor#1.base|) |c_ULTIMATE.start_aws_byte_cursor_advance_~cursor#1.offset|))) (+ (* (div (+ |c_ULTIMATE.start_aws_byte_cursor_advance_~len#1| (* (- 1) .cse0)) 18446744073709551616) 18446744073709551616) .cse0))))) |c_ULTIMATE.start_aws_byte_cursor_advance_#t~short1082#1|) is different from false [2022-07-21 09:36:09,115 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_arrayElimArr_2 (Array Int Int)) (|ULTIMATE.start_aws_byte_cursor_advance_~#rv~6#1.offset| Int)) (let ((.cse0 (select v_arrayElimArr_2 |ULTIMATE.start_aws_byte_cursor_advance_~#rv~6#1.offset|))) (or (< (mod (select (select |c_#memory_int| |c_ULTIMATE.start_aws_byte_cursor_advance_~cursor#1.base|) |c_ULTIMATE.start_aws_byte_cursor_advance_~cursor#1.offset|) 18446744073709551616) (mod .cse0 18446744073709551616)) (<= .cse0 (let ((.cse1 (select (select (store |c_#memory_int| |c_ULTIMATE.start_aws_byte_cursor_advance_~#rv~6#1.base| v_arrayElimArr_2) |c_ULTIMATE.start_aws_byte_cursor_advance_~cursor#1.base|) |c_ULTIMATE.start_aws_byte_cursor_advance_~cursor#1.offset|))) (+ (* 18446744073709551616 (div (+ .cse0 (* (- 1) .cse1)) 18446744073709551616)) .cse1)))))) is different from false [2022-07-21 09:36:09,246 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1040841512] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 09:36:09,246 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-21 09:36:09,246 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 19] total 33 [2022-07-21 09:36:09,246 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [592654788] [2022-07-21 09:36:09,246 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-21 09:36:09,247 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-07-21 09:36:09,247 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:36:09,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-07-21 09:36:09,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=144, Invalid=1122, Unknown=2, NotChecked=138, Total=1406 [2022-07-21 09:36:09,248 INFO L87 Difference]: Start difference. First operand 156 states and 208 transitions. Second operand has 33 states, 30 states have (on average 2.6666666666666665) internal successors, (80), 30 states have internal predecessors, (80), 10 states have call successors, (13), 6 states have call predecessors, (13), 8 states have return successors, (12), 7 states have call predecessors, (12), 9 states have call successors, (12) [2022-07-21 09:36:13,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:36:13,589 INFO L93 Difference]: Finished difference Result 313 states and 449 transitions. [2022-07-21 09:36:13,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-07-21 09:36:13,590 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 30 states have (on average 2.6666666666666665) internal successors, (80), 30 states have internal predecessors, (80), 10 states have call successors, (13), 6 states have call predecessors, (13), 8 states have return successors, (12), 7 states have call predecessors, (12), 9 states have call successors, (12) Word has length 57 [2022-07-21 09:36:13,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:36:13,592 INFO L225 Difference]: With dead ends: 313 [2022-07-21 09:36:13,592 INFO L226 Difference]: Without dead ends: 244 [2022-07-21 09:36:13,594 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 66 SyntacticMatches, 10 SemanticMatches, 54 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 1002 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=304, Invalid=2563, Unknown=3, NotChecked=210, Total=3080 [2022-07-21 09:36:13,595 INFO L413 NwaCegarLoop]: 161 mSDtfsCounter, 121 mSDsluCounter, 1448 mSDsCounter, 0 mSdLazyCounter, 1021 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 160 SdHoareTripleChecker+Valid, 1609 SdHoareTripleChecker+Invalid, 1564 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 1021 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 459 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-07-21 09:36:13,595 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [160 Valid, 1609 Invalid, 1564 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 1021 Invalid, 0 Unknown, 459 Unchecked, 1.3s Time] [2022-07-21 09:36:13,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244 states. [2022-07-21 09:36:13,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244 to 170. [2022-07-21 09:36:13,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170 states, 118 states have (on average 1.228813559322034) internal successors, (145), 121 states have internal predecessors, (145), 38 states have call successors, (38), 14 states have call predecessors, (38), 13 states have return successors, (47), 34 states have call predecessors, (47), 35 states have call successors, (47) [2022-07-21 09:36:13,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 230 transitions. [2022-07-21 09:36:13,644 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 230 transitions. Word has length 57 [2022-07-21 09:36:13,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:36:13,645 INFO L495 AbstractCegarLoop]: Abstraction has 170 states and 230 transitions. [2022-07-21 09:36:13,645 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 30 states have (on average 2.6666666666666665) internal successors, (80), 30 states have internal predecessors, (80), 10 states have call successors, (13), 6 states have call predecessors, (13), 8 states have return successors, (12), 7 states have call predecessors, (12), 9 states have call successors, (12) [2022-07-21 09:36:13,645 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 230 transitions. [2022-07-21 09:36:13,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-07-21 09:36:13,651 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:36:13,651 INFO L195 NwaCegarLoop]: trace histogram [3, 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] [2022-07-21 09:36:13,687 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-07-21 09:36:13,867 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:36:13,867 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:36:13,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:36:13,868 INFO L85 PathProgramCache]: Analyzing trace with hash -1565075525, now seen corresponding path program 2 times [2022-07-21 09:36:13,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:36:13,868 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1825089296] [2022-07-21 09:36:13,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:36:13,868 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:36:13,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:36:14,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 09:36:14,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:36:14,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-21 09:36:14,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:36:14,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 09:36:14,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:36:14,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-21 09:36:14,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:36:14,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-07-21 09:36:14,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:36:14,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-21 09:36:14,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:36:14,131 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 7 proven. 5 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-07-21 09:36:14,131 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:36:14,131 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1825089296] [2022-07-21 09:36:14,131 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1825089296] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 09:36:14,132 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [524537147] [2022-07-21 09:36:14,132 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-21 09:36:14,132 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:36:14,132 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 09:36:14,133 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) [2022-07-21 09:36:14,134 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-07-21 09:36:14,965 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-21 09:36:14,965 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-21 09:36:14,974 INFO L263 TraceCheckSpWp]: Trace formula consists of 2529 conjuncts, 24 conjunts are in the unsatisfiable core [2022-07-21 09:36:14,982 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 09:36:15,022 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-21 09:36:15,023 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 09:36:15,023 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [524537147] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:36:15,023 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 09:36:15,023 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [9] total 10 [2022-07-21 09:36:15,024 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2131550894] [2022-07-21 09:36:15,024 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:36:15,024 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-21 09:36:15,024 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:36:15,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-21 09:36:15,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-07-21 09:36:15,025 INFO L87 Difference]: Start difference. First operand 170 states and 230 transitions. Second operand has 9 states, 8 states have (on average 5.75) internal successors, (46), 8 states have internal predecessors, (46), 3 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2022-07-21 09:36:15,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:36:15,131 INFO L93 Difference]: Finished difference Result 238 states and 327 transitions. [2022-07-21 09:36:15,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-21 09:36:15,132 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 5.75) internal successors, (46), 8 states have internal predecessors, (46), 3 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) Word has length 61 [2022-07-21 09:36:15,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:36:15,134 INFO L225 Difference]: With dead ends: 238 [2022-07-21 09:36:15,134 INFO L226 Difference]: Without dead ends: 170 [2022-07-21 09:36:15,134 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 71 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2022-07-21 09:36:15,135 INFO L413 NwaCegarLoop]: 104 mSDtfsCounter, 12 mSDsluCounter, 675 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 779 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 09:36:15,135 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 779 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 09:36:15,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2022-07-21 09:36:15,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 170. [2022-07-21 09:36:15,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170 states, 118 states have (on average 1.2203389830508475) internal successors, (144), 121 states have internal predecessors, (144), 38 states have call successors, (38), 14 states have call predecessors, (38), 13 states have return successors, (51), 34 states have call predecessors, (51), 35 states have call successors, (51) [2022-07-21 09:36:15,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 233 transitions. [2022-07-21 09:36:15,167 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 233 transitions. Word has length 61 [2022-07-21 09:36:15,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:36:15,168 INFO L495 AbstractCegarLoop]: Abstraction has 170 states and 233 transitions. [2022-07-21 09:36:15,168 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 5.75) internal successors, (46), 8 states have internal predecessors, (46), 3 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2022-07-21 09:36:15,168 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 233 transitions. [2022-07-21 09:36:15,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-07-21 09:36:15,169 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:36:15,169 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-07-21 09:36:15,199 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-07-21 09:36:15,384 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:36:15,384 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:36:15,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:36:15,385 INFO L85 PathProgramCache]: Analyzing trace with hash 1300919918, now seen corresponding path program 1 times [2022-07-21 09:36:15,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:36:15,385 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1411131441] [2022-07-21 09:36:15,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:36:15,385 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:36:15,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:36:15,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 09:36:15,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:36:15,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-21 09:36:15,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:36:15,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 09:36:15,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:36:15,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-21 09:36:15,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:36:15,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-21 09:36:15,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:36:15,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-21 09:36:15,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:36:15,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-21 09:36:15,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:36:15,688 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-07-21 09:36:15,689 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:36:15,689 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1411131441] [2022-07-21 09:36:15,689 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1411131441] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:36:15,689 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:36:15,690 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-21 09:36:15,690 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1461207008] [2022-07-21 09:36:15,690 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:36:15,690 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-21 09:36:15,690 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:36:15,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-21 09:36:15,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-21 09:36:15,691 INFO L87 Difference]: Start difference. First operand 170 states and 233 transitions. Second operand has 6 states, 6 states have (on average 5.333333333333333) internal successors, (32), 6 states have internal predecessors, (32), 3 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-21 09:36:15,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:36:15,967 INFO L93 Difference]: Finished difference Result 288 states and 411 transitions. [2022-07-21 09:36:15,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-21 09:36:15,968 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.333333333333333) internal successors, (32), 6 states have internal predecessors, (32), 3 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 64 [2022-07-21 09:36:15,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:36:15,970 INFO L225 Difference]: With dead ends: 288 [2022-07-21 09:36:15,970 INFO L226 Difference]: Without dead ends: 199 [2022-07-21 09:36:15,971 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2022-07-21 09:36:15,971 INFO L413 NwaCegarLoop]: 113 mSDtfsCounter, 38 mSDsluCounter, 360 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 473 SdHoareTripleChecker+Invalid, 108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-21 09:36:15,971 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 473 Invalid, 108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-21 09:36:15,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2022-07-21 09:36:15,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 162. [2022-07-21 09:36:15,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 162 states, 113 states have (on average 1.2123893805309736) internal successors, (137), 115 states have internal predecessors, (137), 35 states have call successors, (35), 14 states have call predecessors, (35), 13 states have return successors, (47), 32 states have call predecessors, (47), 32 states have call successors, (47) [2022-07-21 09:36:15,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 219 transitions. [2022-07-21 09:36:15,997 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 219 transitions. Word has length 64 [2022-07-21 09:36:15,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:36:15,997 INFO L495 AbstractCegarLoop]: Abstraction has 162 states and 219 transitions. [2022-07-21 09:36:15,998 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.333333333333333) internal successors, (32), 6 states have internal predecessors, (32), 3 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-21 09:36:15,998 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 219 transitions. [2022-07-21 09:36:15,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-07-21 09:36:15,999 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:36:16,000 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 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] [2022-07-21 09:36:16,000 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-21 09:36:16,000 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:36:16,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:36:16,001 INFO L85 PathProgramCache]: Analyzing trace with hash -145583488, now seen corresponding path program 1 times [2022-07-21 09:36:16,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:36:16,001 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [639350875] [2022-07-21 09:36:16,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:36:16,001 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:36:16,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:36:16,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 09:36:16,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:36:16,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-21 09:36:16,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:36:16,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 09:36:16,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:36:16,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-21 09:36:16,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:36:16,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-21 09:36:16,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:36:16,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-21 09:36:16,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:36:16,207 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 5 proven. 9 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-07-21 09:36:16,208 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:36:16,208 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [639350875] [2022-07-21 09:36:16,208 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [639350875] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 09:36:16,208 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2142040231] [2022-07-21 09:36:16,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:36:16,209 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:36:16,209 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 09:36:16,210 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) [2022-07-21 09:36:16,211 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-07-21 09:36:16,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:36:16,618 INFO L263 TraceCheckSpWp]: Trace formula consists of 2534 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-21 09:36:16,621 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 09:36:16,702 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-07-21 09:36:16,703 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 09:36:16,703 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2142040231] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:36:16,703 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 09:36:16,703 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-07-21 09:36:16,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [314469961] [2022-07-21 09:36:16,704 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:36:16,704 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 09:36:16,704 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:36:16,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 09:36:16,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-07-21 09:36:16,705 INFO L87 Difference]: Start difference. First operand 162 states and 219 transitions. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-07-21 09:36:16,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:36:16,885 INFO L93 Difference]: Finished difference Result 258 states and 361 transitions. [2022-07-21 09:36:16,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-21 09:36:16,885 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 63 [2022-07-21 09:36:16,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:36:16,887 INFO L225 Difference]: With dead ends: 258 [2022-07-21 09:36:16,887 INFO L226 Difference]: Without dead ends: 162 [2022-07-21 09:36:16,887 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 74 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-07-21 09:36:16,888 INFO L413 NwaCegarLoop]: 105 mSDtfsCounter, 15 mSDsluCounter, 225 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 330 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 32 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 09:36:16,888 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 330 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 60 Invalid, 0 Unknown, 32 Unchecked, 0.1s Time] [2022-07-21 09:36:16,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2022-07-21 09:36:16,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 162. [2022-07-21 09:36:16,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 162 states, 113 states have (on average 1.2035398230088497) internal successors, (136), 115 states have internal predecessors, (136), 35 states have call successors, (35), 14 states have call predecessors, (35), 13 states have return successors, (47), 32 states have call predecessors, (47), 32 states have call successors, (47) [2022-07-21 09:36:16,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 218 transitions. [2022-07-21 09:36:16,904 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 218 transitions. Word has length 63 [2022-07-21 09:36:16,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:36:16,905 INFO L495 AbstractCegarLoop]: Abstraction has 162 states and 218 transitions. [2022-07-21 09:36:16,905 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-07-21 09:36:16,905 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 218 transitions. [2022-07-21 09:36:16,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-07-21 09:36:16,906 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:36:16,906 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 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] [2022-07-21 09:36:16,931 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-07-21 09:36:17,123 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:36:17,124 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:36:17,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:36:17,124 INFO L85 PathProgramCache]: Analyzing trace with hash 556016386, now seen corresponding path program 1 times [2022-07-21 09:36:17,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:36:17,124 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [426869385] [2022-07-21 09:36:17,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:36:17,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:36:17,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:36:17,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 09:36:17,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:36:17,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-21 09:36:17,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:36:17,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 09:36:17,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:36:17,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-21 09:36:17,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:36:17,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-21 09:36:17,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:36:17,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-21 09:36:17,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:36:17,823 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-07-21 09:36:17,823 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:36:17,823 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [426869385] [2022-07-21 09:36:17,823 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [426869385] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 09:36:17,824 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [372374883] [2022-07-21 09:36:17,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:36:17,824 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:36:17,824 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 09:36:17,825 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) [2022-07-21 09:36:17,855 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-07-21 09:36:18,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:36:18,252 INFO L263 TraceCheckSpWp]: Trace formula consists of 2539 conjuncts, 51 conjunts are in the unsatisfiable core [2022-07-21 09:36:18,255 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 09:36:18,280 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 [2022-07-21 09:36:18,698 INFO L356 Elim1Store]: treesize reduction 19, result has 5.0 percent of original size [2022-07-21 09:36:18,699 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 29 treesize of output 1 [2022-07-21 09:36:18,702 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 25 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 09:36:18,703 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 09:36:19,026 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-07-21 09:36:19,026 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [372374883] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 09:36:19,026 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-21 09:36:19,027 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 10] total 30 [2022-07-21 09:36:19,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [26097213] [2022-07-21 09:36:19,027 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-21 09:36:19,027 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-07-21 09:36:19,027 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:36:19,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-07-21 09:36:19,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=766, Unknown=0, NotChecked=0, Total=870 [2022-07-21 09:36:19,028 INFO L87 Difference]: Start difference. First operand 162 states and 218 transitions. Second operand has 30 states, 27 states have (on average 3.8518518518518516) internal successors, (104), 30 states have internal predecessors, (104), 9 states have call successors, (16), 3 states have call predecessors, (16), 7 states have return successors, (16), 6 states have call predecessors, (16), 9 states have call successors, (16) [2022-07-21 09:36:22,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:36:22,132 INFO L93 Difference]: Finished difference Result 348 states and 497 transitions. [2022-07-21 09:36:22,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-07-21 09:36:22,135 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 27 states have (on average 3.8518518518518516) internal successors, (104), 30 states have internal predecessors, (104), 9 states have call successors, (16), 3 states have call predecessors, (16), 7 states have return successors, (16), 6 states have call predecessors, (16), 9 states have call successors, (16) Word has length 63 [2022-07-21 09:36:22,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:36:22,137 INFO L225 Difference]: With dead ends: 348 [2022-07-21 09:36:22,137 INFO L226 Difference]: Without dead ends: 245 [2022-07-21 09:36:22,138 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 125 SyntacticMatches, 2 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 927 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=524, Invalid=3016, Unknown=0, NotChecked=0, Total=3540 [2022-07-21 09:36:22,139 INFO L413 NwaCegarLoop]: 134 mSDtfsCounter, 295 mSDsluCounter, 934 mSDsCounter, 0 mSdLazyCounter, 1942 mSolverCounterSat, 140 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 330 SdHoareTripleChecker+Valid, 1068 SdHoareTripleChecker+Invalid, 2282 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 140 IncrementalHoareTripleChecker+Valid, 1942 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 200 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-07-21 09:36:22,139 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [330 Valid, 1068 Invalid, 2282 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [140 Valid, 1942 Invalid, 0 Unknown, 200 Unchecked, 1.8s Time] [2022-07-21 09:36:22,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 245 states. [2022-07-21 09:36:22,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 245 to 161. [2022-07-21 09:36:22,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 161 states, 111 states have (on average 1.1711711711711712) internal successors, (130), 114 states have internal predecessors, (130), 35 states have call successors, (35), 14 states have call predecessors, (35), 14 states have return successors, (45), 32 states have call predecessors, (45), 32 states have call successors, (45) [2022-07-21 09:36:22,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 210 transitions. [2022-07-21 09:36:22,168 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 210 transitions. Word has length 63 [2022-07-21 09:36:22,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:36:22,168 INFO L495 AbstractCegarLoop]: Abstraction has 161 states and 210 transitions. [2022-07-21 09:36:22,168 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 27 states have (on average 3.8518518518518516) internal successors, (104), 30 states have internal predecessors, (104), 9 states have call successors, (16), 3 states have call predecessors, (16), 7 states have return successors, (16), 6 states have call predecessors, (16), 9 states have call successors, (16) [2022-07-21 09:36:22,168 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 210 transitions. [2022-07-21 09:36:22,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-07-21 09:36:22,170 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:36:22,170 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 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] [2022-07-21 09:36:22,200 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-07-21 09:36:22,383 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:36:22,383 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:36:22,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:36:22,384 INFO L85 PathProgramCache]: Analyzing trace with hash 1118956732, now seen corresponding path program 1 times [2022-07-21 09:36:22,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:36:22,384 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1157461486] [2022-07-21 09:36:22,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:36:22,384 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:36:22,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:36:22,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 09:36:22,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:36:22,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-21 09:36:22,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:36:22,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 09:36:22,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:36:22,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-21 09:36:22,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:36:22,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-21 09:36:22,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:36:22,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-21 09:36:22,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:36:22,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-21 09:36:22,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:36:22,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-07-21 09:36:22,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:36:22,590 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-07-21 09:36:22,591 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:36:22,591 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1157461486] [2022-07-21 09:36:22,591 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1157461486] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:36:22,591 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:36:22,591 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-21 09:36:22,591 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1824669088] [2022-07-21 09:36:22,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:36:22,592 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 09:36:22,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:36:22,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 09:36:22,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-21 09:36:22,594 INFO L87 Difference]: Start difference. First operand 161 states and 210 transitions. Second operand has 5 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-21 09:36:22,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:36:22,644 INFO L93 Difference]: Finished difference Result 216 states and 277 transitions. [2022-07-21 09:36:22,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-21 09:36:22,646 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) Word has length 65 [2022-07-21 09:36:22,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:36:22,647 INFO L225 Difference]: With dead ends: 216 [2022-07-21 09:36:22,648 INFO L226 Difference]: Without dead ends: 161 [2022-07-21 09:36:22,648 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-21 09:36:22,649 INFO L413 NwaCegarLoop]: 100 mSDtfsCounter, 16 mSDsluCounter, 262 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 362 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 09:36:22,649 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 362 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 09:36:22,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2022-07-21 09:36:22,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 161. [2022-07-21 09:36:22,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 161 states, 111 states have (on average 1.1711711711711712) internal successors, (130), 114 states have internal predecessors, (130), 35 states have call successors, (35), 14 states have call predecessors, (35), 14 states have return successors, (44), 32 states have call predecessors, (44), 32 states have call successors, (44) [2022-07-21 09:36:22,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 209 transitions. [2022-07-21 09:36:22,668 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 209 transitions. Word has length 65 [2022-07-21 09:36:22,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:36:22,669 INFO L495 AbstractCegarLoop]: Abstraction has 161 states and 209 transitions. [2022-07-21 09:36:22,669 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-21 09:36:22,669 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 209 transitions. [2022-07-21 09:36:22,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-07-21 09:36:22,671 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:36:22,671 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 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] [2022-07-21 09:36:22,671 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-21 09:36:22,671 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:36:22,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:36:22,672 INFO L85 PathProgramCache]: Analyzing trace with hash -1635963807, now seen corresponding path program 1 times [2022-07-21 09:36:22,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:36:22,672 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2051768922] [2022-07-21 09:36:22,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:36:22,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:36:22,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:36:22,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 09:36:22,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:36:22,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-21 09:36:22,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:36:22,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 09:36:22,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:36:22,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-21 09:36:22,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:36:22,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-21 09:36:22,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:36:22,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-21 09:36:22,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:36:22,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-21 09:36:22,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:36:22,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-07-21 09:36:22,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:36:22,895 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-07-21 09:36:22,896 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:36:22,896 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2051768922] [2022-07-21 09:36:22,896 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2051768922] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:36:22,896 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:36:22,896 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-21 09:36:22,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [753830895] [2022-07-21 09:36:22,897 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:36:22,897 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-21 09:36:22,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:36:22,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-21 09:36:22,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-21 09:36:22,898 INFO L87 Difference]: Start difference. First operand 161 states and 209 transitions. Second operand has 8 states, 7 states have (on average 4.714285714285714) internal successors, (33), 6 states have internal predecessors, (33), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) [2022-07-21 09:36:22,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:36:22,972 INFO L93 Difference]: Finished difference Result 169 states and 217 transitions. [2022-07-21 09:36:22,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-21 09:36:22,973 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 4.714285714285714) internal successors, (33), 6 states have internal predecessors, (33), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) Word has length 67 [2022-07-21 09:36:22,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:36:22,974 INFO L225 Difference]: With dead ends: 169 [2022-07-21 09:36:22,974 INFO L226 Difference]: Without dead ends: 167 [2022-07-21 09:36:22,975 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-07-21 09:36:22,976 INFO L413 NwaCegarLoop]: 104 mSDtfsCounter, 15 mSDsluCounter, 579 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 683 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 09:36:22,976 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 683 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 09:36:22,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2022-07-21 09:36:22,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 166. [2022-07-21 09:36:22,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 114 states have (on average 1.1666666666666667) internal successors, (133), 117 states have internal predecessors, (133), 36 states have call successors, (36), 15 states have call predecessors, (36), 15 states have return successors, (45), 33 states have call predecessors, (45), 33 states have call successors, (45) [2022-07-21 09:36:22,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 214 transitions. [2022-07-21 09:36:22,994 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 214 transitions. Word has length 67 [2022-07-21 09:36:22,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:36:22,995 INFO L495 AbstractCegarLoop]: Abstraction has 166 states and 214 transitions. [2022-07-21 09:36:22,995 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 4.714285714285714) internal successors, (33), 6 states have internal predecessors, (33), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) [2022-07-21 09:36:22,995 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 214 transitions. [2022-07-21 09:36:22,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-07-21 09:36:22,996 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:36:22,996 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-07-21 09:36:22,997 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-21 09:36:22,997 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:36:22,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:36:22,997 INFO L85 PathProgramCache]: Analyzing trace with hash 701340153, now seen corresponding path program 1 times [2022-07-21 09:36:22,997 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:36:22,998 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [102593432] [2022-07-21 09:36:22,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:36:22,998 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:36:23,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:36:23,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 09:36:23,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:36:23,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-21 09:36:23,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:36:23,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 09:36:23,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:36:23,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-21 09:36:23,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:36:23,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-07-21 09:36:23,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:36:23,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-21 09:36:23,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:36:23,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-21 09:36:23,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:36:23,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-07-21 09:36:23,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:36:23,498 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 12 proven. 5 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-07-21 09:36:23,498 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:36:23,499 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [102593432] [2022-07-21 09:36:23,499 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [102593432] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 09:36:23,499 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1922050639] [2022-07-21 09:36:23,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:36:23,499 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:36:23,499 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 09:36:23,500 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) [2022-07-21 09:36:23,502 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-07-21 09:36:23,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:36:23,893 INFO L263 TraceCheckSpWp]: Trace formula consists of 2554 conjuncts, 69 conjunts are in the unsatisfiable core [2022-07-21 09:36:23,897 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 09:36:23,904 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-07-21 09:36:24,076 INFO L356 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-07-21 09:36:24,076 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 17 treesize of output 21 [2022-07-21 09:36:24,152 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 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 [2022-07-21 09:36:25,113 INFO L356 Elim1Store]: treesize reduction 48, result has 23.8 percent of original size [2022-07-21 09:36:25,114 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 3 case distinctions, treesize of input 24 treesize of output 30 [2022-07-21 09:36:25,175 INFO L356 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-07-21 09:36:25,175 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 17 treesize of output 21 [2022-07-21 09:36:25,426 INFO L356 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-07-21 09:36:25,426 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 11 treesize of output 11 [2022-07-21 09:36:25,468 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 23 treesize of output 23 [2022-07-21 09:36:32,677 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 8 proven. 15 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-07-21 09:36:32,677 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 09:36:32,874 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_778 (Array Int Int))) (not (= (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_aws_byte_cursor_advance_~#rv~6#1.base| v_ArrVal_778) |c_ULTIMATE.start_aws_byte_cursor_advance_~cursor#1.base|) (+ |c_ULTIMATE.start_aws_byte_cursor_advance_~cursor#1.offset| 8)) 0))) is different from false [2022-07-21 09:36:32,960 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1922050639] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 09:36:32,961 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-21 09:36:32,961 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 19] total 34 [2022-07-21 09:36:32,961 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2120826309] [2022-07-21 09:36:32,961 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-21 09:36:32,961 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-07-21 09:36:32,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:36:32,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-07-21 09:36:32,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=150, Invalid=1412, Unknown=2, NotChecked=76, Total=1640 [2022-07-21 09:36:32,962 INFO L87 Difference]: Start difference. First operand 166 states and 214 transitions. Second operand has 34 states, 31 states have (on average 2.6129032258064515) internal successors, (81), 30 states have internal predecessors, (81), 12 states have call successors, (17), 7 states have call predecessors, (17), 7 states have return successors, (16), 10 states have call predecessors, (16), 11 states have call successors, (16) [2022-07-21 09:36:50,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:36:50,992 INFO L93 Difference]: Finished difference Result 417 states and 585 transitions. [2022-07-21 09:36:50,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2022-07-21 09:36:50,993 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 31 states have (on average 2.6129032258064515) internal successors, (81), 30 states have internal predecessors, (81), 12 states have call successors, (17), 7 states have call predecessors, (17), 7 states have return successors, (16), 10 states have call predecessors, (16), 11 states have call successors, (16) Word has length 68 [2022-07-21 09:36:50,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:36:50,996 INFO L225 Difference]: With dead ends: 417 [2022-07-21 09:36:50,996 INFO L226 Difference]: Without dead ends: 345 [2022-07-21 09:36:50,999 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 83 SyntacticMatches, 14 SemanticMatches, 87 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 2342 ImplicationChecksByTransitivity, 24.6s TimeCoverageRelationStatistics Valid=809, Invalid=6842, Unknown=9, NotChecked=172, Total=7832 [2022-07-21 09:36:50,999 INFO L413 NwaCegarLoop]: 133 mSDtfsCounter, 503 mSDsluCounter, 359 mSDsCounter, 0 mSdLazyCounter, 2354 mSolverCounterSat, 524 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 510 SdHoareTripleChecker+Valid, 492 SdHoareTripleChecker+Invalid, 4052 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 524 IncrementalHoareTripleChecker+Valid, 2354 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1174 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-07-21 09:36:51,000 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [510 Valid, 492 Invalid, 4052 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [524 Valid, 2354 Invalid, 0 Unknown, 1174 Unchecked, 2.1s Time] [2022-07-21 09:36:51,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 345 states. [2022-07-21 09:36:51,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 345 to 193. [2022-07-21 09:36:51,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 193 states, 137 states have (on average 1.1605839416058394) internal successors, (159), 140 states have internal predecessors, (159), 37 states have call successors, (37), 19 states have call predecessors, (37), 18 states have return successors, (45), 33 states have call predecessors, (45), 34 states have call successors, (45) [2022-07-21 09:36:51,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 241 transitions. [2022-07-21 09:36:51,027 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 241 transitions. Word has length 68 [2022-07-21 09:36:51,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:36:51,027 INFO L495 AbstractCegarLoop]: Abstraction has 193 states and 241 transitions. [2022-07-21 09:36:51,028 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 31 states have (on average 2.6129032258064515) internal successors, (81), 30 states have internal predecessors, (81), 12 states have call successors, (17), 7 states have call predecessors, (17), 7 states have return successors, (16), 10 states have call predecessors, (16), 11 states have call successors, (16) [2022-07-21 09:36:51,028 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 241 transitions. [2022-07-21 09:36:51,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-07-21 09:36:51,029 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:36:51,029 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 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] [2022-07-21 09:36:51,060 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-07-21 09:36:51,243 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,SelfDestructingSolverStorable12 [2022-07-21 09:36:51,244 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:36:51,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:36:51,244 INFO L85 PathProgramCache]: Analyzing trace with hash -1153679959, now seen corresponding path program 1 times [2022-07-21 09:36:51,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:36:51,244 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [786984597] [2022-07-21 09:36:51,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:36:51,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:36:51,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:36:51,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 09:36:51,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:36:51,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-21 09:36:51,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:36:51,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 09:36:51,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:36:51,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-21 09:36:51,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:36:51,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-21 09:36:51,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:36:51,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-21 09:36:51,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:36:51,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-21 09:36:51,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:36:51,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-07-21 09:36:51,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:36:51,488 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-07-21 09:36:51,489 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:36:51,489 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [786984597] [2022-07-21 09:36:51,489 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [786984597] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:36:51,489 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:36:51,489 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 09:36:51,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1835449493] [2022-07-21 09:36:51,490 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:36:51,490 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 09:36:51,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:36:51,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 09:36:51,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-07-21 09:36:51,491 INFO L87 Difference]: Start difference. First operand 193 states and 241 transitions. Second operand has 7 states, 7 states have (on average 5.571428571428571) internal successors, (39), 7 states have internal predecessors, (39), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-21 09:36:51,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:36:51,720 INFO L93 Difference]: Finished difference Result 256 states and 326 transitions. [2022-07-21 09:36:51,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-21 09:36:51,721 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.571428571428571) internal successors, (39), 7 states have internal predecessors, (39), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) Word has length 71 [2022-07-21 09:36:51,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:36:51,722 INFO L225 Difference]: With dead ends: 256 [2022-07-21 09:36:51,722 INFO L226 Difference]: Without dead ends: 201 [2022-07-21 09:36:51,723 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-07-21 09:36:51,723 INFO L413 NwaCegarLoop]: 100 mSDtfsCounter, 32 mSDsluCounter, 277 mSDsCounter, 0 mSdLazyCounter, 178 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 377 SdHoareTripleChecker+Invalid, 179 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 178 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-21 09:36:51,723 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 377 Invalid, 179 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 178 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-21 09:36:51,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2022-07-21 09:36:51,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 199. [2022-07-21 09:36:51,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 199 states, 138 states have (on average 1.1594202898550725) internal successors, (160), 143 states have internal predecessors, (160), 42 states have call successors, (42), 19 states have call predecessors, (42), 18 states have return successors, (52), 36 states have call predecessors, (52), 39 states have call successors, (52) [2022-07-21 09:36:51,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 254 transitions. [2022-07-21 09:36:51,745 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 254 transitions. Word has length 71 [2022-07-21 09:36:51,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:36:51,746 INFO L495 AbstractCegarLoop]: Abstraction has 199 states and 254 transitions. [2022-07-21 09:36:51,746 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.571428571428571) internal successors, (39), 7 states have internal predecessors, (39), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-21 09:36:51,746 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 254 transitions. [2022-07-21 09:36:51,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-07-21 09:36:51,747 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:36:51,747 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 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] [2022-07-21 09:36:51,747 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-21 09:36:51,747 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:36:51,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:36:51,748 INFO L85 PathProgramCache]: Analyzing trace with hash -452080085, now seen corresponding path program 1 times [2022-07-21 09:36:51,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:36:51,748 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1335080082] [2022-07-21 09:36:51,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:36:51,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:36:51,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:36:52,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 09:36:52,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:36:52,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-21 09:36:52,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:36:52,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 09:36:52,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:36:52,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-21 09:36:52,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:36:52,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-21 09:36:52,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:36:52,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-21 09:36:52,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:36:52,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-21 09:36:52,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:36:52,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-07-21 09:36:52,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:36:52,306 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 20 proven. 11 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-07-21 09:36:52,306 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:36:52,307 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1335080082] [2022-07-21 09:36:52,307 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1335080082] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 09:36:52,307 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1075665259] [2022-07-21 09:36:52,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:36:52,307 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:36:52,307 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 09:36:52,308 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) [2022-07-21 09:36:52,310 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-07-21 09:36:52,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:36:52,670 INFO L263 TraceCheckSpWp]: Trace formula consists of 2579 conjuncts, 71 conjunts are in the unsatisfiable core [2022-07-21 09:36:52,674 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 09:36:52,700 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 [2022-07-21 09:36:53,144 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-21 09:36:53,144 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 49 treesize of output 36 [2022-07-21 09:36:53,217 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 21 [2022-07-21 09:36:53,231 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 9 treesize of output 12 [2022-07-21 09:36:53,247 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-07-21 09:36:53,247 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 42 treesize of output 44 [2022-07-21 09:36:53,258 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 30 treesize of output 24 [2022-07-21 09:36:53,760 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 15 proven. 21 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-07-21 09:36:53,761 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 09:36:54,090 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-21 09:36:54,091 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 49 treesize of output 42 [2022-07-21 09:36:54,095 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-21 09:36:54,096 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 1 case distinctions, treesize of input 33 treesize of output 32 [2022-07-21 09:36:54,099 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 48 treesize of output 36 [2022-07-21 09:36:54,109 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-21 09:36:54,109 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 26 treesize of output 28 [2022-07-21 09:36:54,512 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 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 28 treesize of output 24 [2022-07-21 09:36:54,518 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 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 8 treesize of output 6 [2022-07-21 09:36:54,529 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 14 proven. 18 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-07-21 09:36:54,529 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1075665259] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 09:36:54,530 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-21 09:36:54,530 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 16] total 37 [2022-07-21 09:36:54,530 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [871868382] [2022-07-21 09:36:54,530 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-21 09:36:54,530 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-07-21 09:36:54,530 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:36:54,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-07-21 09:36:54,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=1210, Unknown=0, NotChecked=0, Total=1332 [2022-07-21 09:36:54,531 INFO L87 Difference]: Start difference. First operand 199 states and 254 transitions. Second operand has 37 states, 33 states have (on average 2.787878787878788) internal successors, (92), 36 states have internal predecessors, (92), 15 states have call successors, (23), 3 states have call predecessors, (23), 5 states have return successors, (22), 10 states have call predecessors, (22), 14 states have call successors, (22) [2022-07-21 09:36:58,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:36:58,448 INFO L93 Difference]: Finished difference Result 392 states and 541 transitions. [2022-07-21 09:36:58,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2022-07-21 09:36:58,449 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 33 states have (on average 2.787878787878788) internal successors, (92), 36 states have internal predecessors, (92), 15 states have call successors, (23), 3 states have call predecessors, (23), 5 states have return successors, (22), 10 states have call predecessors, (22), 14 states have call successors, (22) Word has length 71 [2022-07-21 09:36:58,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:36:58,451 INFO L225 Difference]: With dead ends: 392 [2022-07-21 09:36:58,451 INFO L226 Difference]: Without dead ends: 319 [2022-07-21 09:36:58,453 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 219 GetRequests, 128 SyntacticMatches, 16 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1673 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=587, Invalid=5265, Unknown=0, NotChecked=0, Total=5852 [2022-07-21 09:36:58,454 INFO L413 NwaCegarLoop]: 169 mSDtfsCounter, 276 mSDsluCounter, 2131 mSDsCounter, 0 mSdLazyCounter, 2769 mSolverCounterSat, 285 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 300 SdHoareTripleChecker+Valid, 2300 SdHoareTripleChecker+Invalid, 3413 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 285 IncrementalHoareTripleChecker+Valid, 2769 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 359 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-07-21 09:36:58,454 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [300 Valid, 2300 Invalid, 3413 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [285 Valid, 2769 Invalid, 0 Unknown, 359 Unchecked, 2.3s Time] [2022-07-21 09:36:58,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 319 states. [2022-07-21 09:36:58,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 319 to 227. [2022-07-21 09:36:58,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 227 states, 157 states have (on average 1.1656050955414012) internal successors, (183), 165 states have internal predecessors, (183), 48 states have call successors, (48), 21 states have call predecessors, (48), 21 states have return successors, (58), 40 states have call predecessors, (58), 45 states have call successors, (58) [2022-07-21 09:36:58,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 289 transitions. [2022-07-21 09:36:58,487 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 289 transitions. Word has length 71 [2022-07-21 09:36:58,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:36:58,488 INFO L495 AbstractCegarLoop]: Abstraction has 227 states and 289 transitions. [2022-07-21 09:36:58,488 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 33 states have (on average 2.787878787878788) internal successors, (92), 36 states have internal predecessors, (92), 15 states have call successors, (23), 3 states have call predecessors, (23), 5 states have return successors, (22), 10 states have call predecessors, (22), 14 states have call successors, (22) [2022-07-21 09:36:58,488 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 289 transitions. [2022-07-21 09:36:58,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-07-21 09:36:58,490 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:36:58,490 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 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] [2022-07-21 09:36:58,520 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-07-21 09:36:58,703 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,SelfDestructingSolverStorable14 [2022-07-21 09:36:58,704 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:36:58,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:36:58,704 INFO L85 PathProgramCache]: Analyzing trace with hash -1701555945, now seen corresponding path program 1 times [2022-07-21 09:36:58,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:36:58,704 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [150552291] [2022-07-21 09:36:58,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:36:58,704 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:36:58,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:36:58,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 09:36:58,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:36:58,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-21 09:36:58,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:36:58,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 09:36:58,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:36:58,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-21 09:36:58,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:36:58,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-21 09:36:58,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:36:58,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-21 09:36:58,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:36:58,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-21 09:36:58,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:36:58,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-07-21 09:36:58,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:36:58,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-21 09:36:58,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:36:58,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-07-21 09:36:58,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:36:58,934 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2022-07-21 09:36:58,935 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:36:58,935 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [150552291] [2022-07-21 09:36:58,935 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [150552291] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:36:58,935 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:36:58,935 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-21 09:36:58,936 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1957232778] [2022-07-21 09:36:58,937 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:36:58,937 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 09:36:58,937 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:36:58,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 09:36:58,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-21 09:36:58,938 INFO L87 Difference]: Start difference. First operand 227 states and 289 transitions. Second operand has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 3 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 3 states have call predecessors, (10), 2 states have call successors, (10) [2022-07-21 09:36:58,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:36:58,997 INFO L93 Difference]: Finished difference Result 253 states and 322 transitions. [2022-07-21 09:36:58,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-21 09:36:58,997 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 3 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 3 states have call predecessors, (10), 2 states have call successors, (10) Word has length 80 [2022-07-21 09:36:58,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:36:58,999 INFO L225 Difference]: With dead ends: 253 [2022-07-21 09:36:58,999 INFO L226 Difference]: Without dead ends: 224 [2022-07-21 09:36:59,000 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-21 09:36:59,000 INFO L413 NwaCegarLoop]: 99 mSDtfsCounter, 27 mSDsluCounter, 158 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 257 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 09:36:59,000 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 257 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 09:36:59,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2022-07-21 09:36:59,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 222. [2022-07-21 09:36:59,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 222 states, 153 states have (on average 1.1633986928104576) internal successors, (178), 161 states have internal predecessors, (178), 48 states have call successors, (48), 20 states have call predecessors, (48), 20 states have return successors, (57), 40 states have call predecessors, (57), 45 states have call successors, (57) [2022-07-21 09:36:59,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 283 transitions. [2022-07-21 09:36:59,033 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 283 transitions. Word has length 80 [2022-07-21 09:36:59,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:36:59,034 INFO L495 AbstractCegarLoop]: Abstraction has 222 states and 283 transitions. [2022-07-21 09:36:59,034 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 3 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 3 states have call predecessors, (10), 2 states have call successors, (10) [2022-07-21 09:36:59,034 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 283 transitions. [2022-07-21 09:36:59,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2022-07-21 09:36:59,037 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:36:59,037 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 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] [2022-07-21 09:36:59,037 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-21 09:36:59,037 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:36:59,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:36:59,038 INFO L85 PathProgramCache]: Analyzing trace with hash -1390033412, now seen corresponding path program 1 times [2022-07-21 09:36:59,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:36:59,038 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [674685667] [2022-07-21 09:36:59,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:36:59,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:36:59,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:36:59,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 09:36:59,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:36:59,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-21 09:36:59,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:36:59,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 09:36:59,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:36:59,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-21 09:36:59,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:36:59,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-21 09:36:59,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:36:59,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-21 09:36:59,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:36:59,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-21 09:36:59,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:36:59,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-07-21 09:36:59,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:36:59,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-21 09:36:59,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:36:59,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-07-21 09:36:59,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:36:59,248 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2022-07-21 09:36:59,248 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:36:59,248 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [674685667] [2022-07-21 09:36:59,249 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [674685667] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:36:59,249 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:36:59,249 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-21 09:36:59,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [507336508] [2022-07-21 09:36:59,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:36:59,250 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-21 09:36:59,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:36:59,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-21 09:36:59,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-21 09:36:59,251 INFO L87 Difference]: Start difference. First operand 222 states and 283 transitions. Second operand has 8 states, 7 states have (on average 5.0) internal successors, (35), 6 states have internal predecessors, (35), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 1 states have call successors, (10) [2022-07-21 09:36:59,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:36:59,339 INFO L93 Difference]: Finished difference Result 230 states and 291 transitions. [2022-07-21 09:36:59,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-21 09:36:59,340 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 5.0) internal successors, (35), 6 states have internal predecessors, (35), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 1 states have call successors, (10) Word has length 82 [2022-07-21 09:36:59,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:36:59,341 INFO L225 Difference]: With dead ends: 230 [2022-07-21 09:36:59,341 INFO L226 Difference]: Without dead ends: 228 [2022-07-21 09:36:59,342 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-07-21 09:36:59,342 INFO L413 NwaCegarLoop]: 102 mSDtfsCounter, 15 mSDsluCounter, 568 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 670 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 09:36:59,343 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 670 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 09:36:59,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2022-07-21 09:36:59,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 227. [2022-07-21 09:36:59,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 227 states, 156 states have (on average 1.1602564102564104) internal successors, (181), 164 states have internal predecessors, (181), 49 states have call successors, (49), 21 states have call predecessors, (49), 21 states have return successors, (58), 41 states have call predecessors, (58), 46 states have call successors, (58) [2022-07-21 09:36:59,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 288 transitions. [2022-07-21 09:36:59,372 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 288 transitions. Word has length 82 [2022-07-21 09:36:59,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:36:59,372 INFO L495 AbstractCegarLoop]: Abstraction has 227 states and 288 transitions. [2022-07-21 09:36:59,373 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 5.0) internal successors, (35), 6 states have internal predecessors, (35), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 1 states have call successors, (10) [2022-07-21 09:36:59,373 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 288 transitions. [2022-07-21 09:36:59,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-07-21 09:36:59,374 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:36:59,374 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 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] [2022-07-21 09:36:59,375 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-07-21 09:36:59,375 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:36:59,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:36:59,375 INFO L85 PathProgramCache]: Analyzing trace with hash -1172549180, now seen corresponding path program 1 times [2022-07-21 09:36:59,375 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:36:59,375 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1611331215] [2022-07-21 09:36:59,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:36:59,376 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:36:59,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:36:59,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 09:36:59,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:36:59,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-21 09:36:59,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:36:59,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 09:36:59,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:36:59,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-21 09:36:59,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:36:59,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-21 09:36:59,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:36:59,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-21 09:36:59,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:36:59,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-21 09:36:59,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:36:59,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-07-21 09:36:59,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:36:59,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-21 09:36:59,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:36:59,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-07-21 09:36:59,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:36:59,620 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2022-07-21 09:36:59,620 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:36:59,620 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1611331215] [2022-07-21 09:36:59,620 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1611331215] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:36:59,621 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:36:59,621 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-21 09:36:59,621 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [846776043] [2022-07-21 09:36:59,621 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:36:59,622 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-21 09:36:59,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:36:59,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-21 09:36:59,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2022-07-21 09:36:59,622 INFO L87 Difference]: Start difference. First operand 227 states and 288 transitions. Second operand has 9 states, 8 states have (on average 5.125) internal successors, (41), 9 states have internal predecessors, (41), 4 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-07-21 09:36:59,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:36:59,962 INFO L93 Difference]: Finished difference Result 279 states and 365 transitions. [2022-07-21 09:36:59,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-21 09:36:59,962 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 5.125) internal successors, (41), 9 states have internal predecessors, (41), 4 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 86 [2022-07-21 09:36:59,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:36:59,964 INFO L225 Difference]: With dead ends: 279 [2022-07-21 09:36:59,964 INFO L226 Difference]: Without dead ends: 253 [2022-07-21 09:36:59,965 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2022-07-21 09:36:59,965 INFO L413 NwaCegarLoop]: 118 mSDtfsCounter, 61 mSDsluCounter, 478 mSDsCounter, 0 mSdLazyCounter, 359 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 596 SdHoareTripleChecker+Invalid, 374 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 359 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-21 09:36:59,966 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 596 Invalid, 374 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 359 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-21 09:36:59,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2022-07-21 09:36:59,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 236. [2022-07-21 09:37:00,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 236 states, 159 states have (on average 1.1572327044025157) internal successors, (184), 168 states have internal predecessors, (184), 55 states have call successors, (55), 21 states have call predecessors, (55), 21 states have return successors, (66), 46 states have call predecessors, (66), 52 states have call successors, (66) [2022-07-21 09:37:00,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 305 transitions. [2022-07-21 09:37:00,002 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 305 transitions. Word has length 86 [2022-07-21 09:37:00,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:37:00,002 INFO L495 AbstractCegarLoop]: Abstraction has 236 states and 305 transitions. [2022-07-21 09:37:00,002 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 5.125) internal successors, (41), 9 states have internal predecessors, (41), 4 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-07-21 09:37:00,003 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 305 transitions. [2022-07-21 09:37:00,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-07-21 09:37:00,004 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:37:00,004 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 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] [2022-07-21 09:37:00,005 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-07-21 09:37:00,005 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:37:00,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:37:00,005 INFO L85 PathProgramCache]: Analyzing trace with hash 755723522, now seen corresponding path program 1 times [2022-07-21 09:37:00,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:37:00,005 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [193068603] [2022-07-21 09:37:00,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:37:00,006 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:37:00,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:37:00,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 09:37:00,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:37:00,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-21 09:37:00,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:37:00,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 09:37:00,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:37:00,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-21 09:37:00,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:37:00,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-21 09:37:00,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:37:00,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-21 09:37:00,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:37:00,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-21 09:37:00,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:37:00,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-07-21 09:37:00,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:37:00,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-21 09:37:00,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:37:00,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-07-21 09:37:00,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:37:00,376 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 40 proven. 5 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2022-07-21 09:37:00,376 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:37:00,376 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [193068603] [2022-07-21 09:37:00,376 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [193068603] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 09:37:00,376 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1197180897] [2022-07-21 09:37:00,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:37:00,377 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:37:00,377 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 09:37:00,380 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) [2022-07-21 09:37:00,392 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-07-21 09:37:04,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:37:04,933 INFO L263 TraceCheckSpWp]: Trace formula consists of 2625 conjuncts, 62 conjunts are in the unsatisfiable core [2022-07-21 09:37:04,937 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 09:37:04,941 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-07-21 09:37:05,114 INFO L356 Elim1Store]: treesize reduction 60, result has 24.1 percent of original size [2022-07-21 09:37:05,115 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 29 treesize of output 37 [2022-07-21 09:37:05,173 INFO L356 Elim1Store]: treesize reduction 36, result has 34.5 percent of original size [2022-07-21 09:37:05,173 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 22 treesize of output 33 [2022-07-21 09:37:05,406 INFO L356 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2022-07-21 09:37:05,406 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 16 treesize of output 18 [2022-07-21 09:37:05,436 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 14 [2022-07-21 09:37:05,442 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 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 [2022-07-21 09:37:05,856 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 35 proven. 46 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-21 09:37:05,856 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 09:37:06,195 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 40 proven. 6 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-07-21 09:37:06,195 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1197180897] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 09:37:06,195 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-21 09:37:06,195 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 19, 11] total 31 [2022-07-21 09:37:06,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1441006256] [2022-07-21 09:37:06,196 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-21 09:37:06,196 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-07-21 09:37:06,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:37:06,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-07-21 09:37:06,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=818, Unknown=0, NotChecked=0, Total=930 [2022-07-21 09:37:06,197 INFO L87 Difference]: Start difference. First operand 236 states and 305 transitions. Second operand has 31 states, 29 states have (on average 3.5172413793103448) internal successors, (102), 28 states have internal predecessors, (102), 10 states have call successors, (22), 5 states have call predecessors, (22), 7 states have return successors, (22), 8 states have call predecessors, (22), 9 states have call successors, (22) [2022-07-21 09:37:08,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:37:08,433 INFO L93 Difference]: Finished difference Result 334 states and 435 transitions. [2022-07-21 09:37:08,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-07-21 09:37:08,433 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 29 states have (on average 3.5172413793103448) internal successors, (102), 28 states have internal predecessors, (102), 10 states have call successors, (22), 5 states have call predecessors, (22), 7 states have return successors, (22), 8 states have call predecessors, (22), 9 states have call successors, (22) Word has length 86 [2022-07-21 09:37:08,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:37:08,435 INFO L225 Difference]: With dead ends: 334 [2022-07-21 09:37:08,435 INFO L226 Difference]: Without dead ends: 300 [2022-07-21 09:37:08,436 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 219 GetRequests, 163 SyntacticMatches, 16 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 547 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=216, Invalid=1506, Unknown=0, NotChecked=0, Total=1722 [2022-07-21 09:37:08,437 INFO L413 NwaCegarLoop]: 128 mSDtfsCounter, 89 mSDsluCounter, 1608 mSDsCounter, 0 mSdLazyCounter, 683 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 1736 SdHoareTripleChecker+Invalid, 962 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 683 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 258 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-21 09:37:08,437 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [103 Valid, 1736 Invalid, 962 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 683 Invalid, 0 Unknown, 258 Unchecked, 0.6s Time] [2022-07-21 09:37:08,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 300 states. [2022-07-21 09:37:08,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 300 to 262. [2022-07-21 09:37:08,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 262 states, 178 states have (on average 1.151685393258427) internal successors, (205), 188 states have internal predecessors, (205), 58 states have call successors, (58), 25 states have call predecessors, (58), 25 states have return successors, (67), 48 states have call predecessors, (67), 55 states have call successors, (67) [2022-07-21 09:37:08,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262 states to 262 states and 330 transitions. [2022-07-21 09:37:08,477 INFO L78 Accepts]: Start accepts. Automaton has 262 states and 330 transitions. Word has length 86 [2022-07-21 09:37:08,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:37:08,477 INFO L495 AbstractCegarLoop]: Abstraction has 262 states and 330 transitions. [2022-07-21 09:37:08,477 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 29 states have (on average 3.5172413793103448) internal successors, (102), 28 states have internal predecessors, (102), 10 states have call successors, (22), 5 states have call predecessors, (22), 7 states have return successors, (22), 8 states have call predecessors, (22), 9 states have call successors, (22) [2022-07-21 09:37:08,478 INFO L276 IsEmpty]: Start isEmpty. Operand 262 states and 330 transitions. [2022-07-21 09:37:08,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-07-21 09:37:08,479 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:37:08,479 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-07-21 09:37:08,508 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-07-21 09:37:08,691 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:37:08,692 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:37:08,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:37:08,692 INFO L85 PathProgramCache]: Analyzing trace with hash -98466641, now seen corresponding path program 1 times [2022-07-21 09:37:08,692 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:37:08,692 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [197762720] [2022-07-21 09:37:08,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:37:08,693 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:37:08,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:37:08,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 09:37:08,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:37:08,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-21 09:37:08,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:37:08,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 09:37:08,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:37:08,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-21 09:37:08,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:37:08,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-21 09:37:08,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:37:08,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-21 09:37:08,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:37:08,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-21 09:37:08,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:37:08,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-07-21 09:37:08,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:37:08,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-21 09:37:08,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:37:08,930 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 3 proven. 16 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2022-07-21 09:37:08,930 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:37:08,931 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [197762720] [2022-07-21 09:37:08,931 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [197762720] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 09:37:08,931 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1291015091] [2022-07-21 09:37:08,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:37:08,931 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:37:08,931 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 09:37:08,933 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) [2022-07-21 09:37:08,935 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-07-21 09:37:09,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:37:09,423 INFO L263 TraceCheckSpWp]: Trace formula consists of 2633 conjuncts, 24 conjunts are in the unsatisfiable core [2022-07-21 09:37:09,425 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 09:37:09,468 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-07-21 09:37:09,468 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 09:37:09,468 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1291015091] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:37:09,469 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 09:37:09,469 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [10] total 11 [2022-07-21 09:37:09,469 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1727541114] [2022-07-21 09:37:09,469 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:37:09,469 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-21 09:37:09,469 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:37:09,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-21 09:37:09,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2022-07-21 09:37:09,470 INFO L87 Difference]: Start difference. First operand 262 states and 330 transitions. Second operand has 9 states, 8 states have (on average 6.75) internal successors, (54), 8 states have internal predecessors, (54), 3 states have call successors, (10), 2 states have call predecessors, (10), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2022-07-21 09:37:09,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:37:09,572 INFO L93 Difference]: Finished difference Result 409 states and 527 transitions. [2022-07-21 09:37:09,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-21 09:37:09,573 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 6.75) internal successors, (54), 8 states have internal predecessors, (54), 3 states have call successors, (10), 2 states have call predecessors, (10), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 85 [2022-07-21 09:37:09,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:37:09,575 INFO L225 Difference]: With dead ends: 409 [2022-07-21 09:37:09,575 INFO L226 Difference]: Without dead ends: 262 [2022-07-21 09:37:09,576 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 100 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2022-07-21 09:37:09,577 INFO L413 NwaCegarLoop]: 103 mSDtfsCounter, 11 mSDsluCounter, 671 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 774 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 09:37:09,577 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 774 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 09:37:09,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262 states. [2022-07-21 09:37:09,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262 to 262. [2022-07-21 09:37:09,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 262 states, 178 states have (on average 1.146067415730337) internal successors, (204), 188 states have internal predecessors, (204), 58 states have call successors, (58), 25 states have call predecessors, (58), 25 states have return successors, (66), 48 states have call predecessors, (66), 55 states have call successors, (66) [2022-07-21 09:37:09,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262 states to 262 states and 328 transitions. [2022-07-21 09:37:09,617 INFO L78 Accepts]: Start accepts. Automaton has 262 states and 328 transitions. Word has length 85 [2022-07-21 09:37:09,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:37:09,618 INFO L495 AbstractCegarLoop]: Abstraction has 262 states and 328 transitions. [2022-07-21 09:37:09,618 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 6.75) internal successors, (54), 8 states have internal predecessors, (54), 3 states have call successors, (10), 2 states have call predecessors, (10), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2022-07-21 09:37:09,618 INFO L276 IsEmpty]: Start isEmpty. Operand 262 states and 328 transitions. [2022-07-21 09:37:09,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2022-07-21 09:37:09,620 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:37:09,620 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 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] [2022-07-21 09:37:09,651 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-07-21 09:37:09,839 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:37:09,840 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:37:09,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:37:09,840 INFO L85 PathProgramCache]: Analyzing trace with hash 1314150920, now seen corresponding path program 2 times [2022-07-21 09:37:09,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:37:09,840 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [365721173] [2022-07-21 09:37:09,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:37:09,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:37:10,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:37:10,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 09:37:10,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:37:10,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-21 09:37:10,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:37:10,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 09:37:10,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:37:10,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-21 09:37:10,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:37:10,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-21 09:37:10,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:37:10,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-21 09:37:10,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:37:10,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-21 09:37:10,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:37:10,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-21 09:37:10,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:37:10,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-21 09:37:10,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:37:10,971 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2022-07-21 09:37:10,971 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:37:10,971 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [365721173] [2022-07-21 09:37:10,971 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [365721173] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:37:10,971 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:37:10,972 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-07-21 09:37:10,972 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1206558077] [2022-07-21 09:37:10,972 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:37:10,972 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-07-21 09:37:10,972 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:37:10,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-07-21 09:37:10,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=371, Unknown=0, NotChecked=0, Total=420 [2022-07-21 09:37:10,973 INFO L87 Difference]: Start difference. First operand 262 states and 328 transitions. Second operand has 21 states, 20 states have (on average 2.35) internal successors, (47), 19 states have internal predecessors, (47), 7 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (9), 7 states have call predecessors, (9), 6 states have call successors, (9) [2022-07-21 09:37:13,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:37:13,312 INFO L93 Difference]: Finished difference Result 417 states and 551 transitions. [2022-07-21 09:37:13,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-07-21 09:37:13,312 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 2.35) internal successors, (47), 19 states have internal predecessors, (47), 7 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (9), 7 states have call predecessors, (9), 6 states have call successors, (9) Word has length 87 [2022-07-21 09:37:13,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:37:13,314 INFO L225 Difference]: With dead ends: 417 [2022-07-21 09:37:13,314 INFO L226 Difference]: Without dead ends: 346 [2022-07-21 09:37:13,315 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 215 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=195, Invalid=1137, Unknown=0, NotChecked=0, Total=1332 [2022-07-21 09:37:13,316 INFO L413 NwaCegarLoop]: 126 mSDtfsCounter, 135 mSDsluCounter, 627 mSDsCounter, 0 mSdLazyCounter, 2585 mSolverCounterSat, 107 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 154 SdHoareTripleChecker+Valid, 753 SdHoareTripleChecker+Invalid, 2692 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 107 IncrementalHoareTripleChecker+Valid, 2585 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-07-21 09:37:13,316 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [154 Valid, 753 Invalid, 2692 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [107 Valid, 2585 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-07-21 09:37:13,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 346 states. [2022-07-21 09:37:13,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 346 to 269. [2022-07-21 09:37:13,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 269 states, 184 states have (on average 1.1467391304347827) internal successors, (211), 195 states have internal predecessors, (211), 58 states have call successors, (58), 25 states have call predecessors, (58), 26 states have return successors, (68), 48 states have call predecessors, (68), 55 states have call successors, (68) [2022-07-21 09:37:13,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 269 states to 269 states and 337 transitions. [2022-07-21 09:37:13,359 INFO L78 Accepts]: Start accepts. Automaton has 269 states and 337 transitions. Word has length 87 [2022-07-21 09:37:13,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:37:13,360 INFO L495 AbstractCegarLoop]: Abstraction has 269 states and 337 transitions. [2022-07-21 09:37:13,360 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 2.35) internal successors, (47), 19 states have internal predecessors, (47), 7 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (9), 7 states have call predecessors, (9), 6 states have call successors, (9) [2022-07-21 09:37:13,360 INFO L276 IsEmpty]: Start isEmpty. Operand 269 states and 337 transitions. [2022-07-21 09:37:13,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2022-07-21 09:37:13,362 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:37:13,362 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 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] [2022-07-21 09:37:13,362 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-07-21 09:37:13,362 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:37:13,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:37:13,363 INFO L85 PathProgramCache]: Analyzing trace with hash 1572316358, now seen corresponding path program 1 times [2022-07-21 09:37:13,363 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:37:13,363 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [506835989] [2022-07-21 09:37:13,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:37:13,363 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:37:13,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:37:13,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 09:37:13,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:37:13,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-21 09:37:13,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:37:13,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 09:37:13,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:37:13,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-21 09:37:13,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:37:13,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-21 09:37:13,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:37:13,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-21 09:37:13,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:37:13,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-21 09:37:13,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:37:13,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-21 09:37:13,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:37:13,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-21 09:37:13,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:37:13,841 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 28 proven. 3 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-07-21 09:37:13,841 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:37:13,841 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [506835989] [2022-07-21 09:37:13,841 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [506835989] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 09:37:13,841 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [846257721] [2022-07-21 09:37:13,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:37:13,841 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:37:13,842 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 09:37:13,843 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) [2022-07-21 09:37:13,844 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-07-21 09:37:14,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:37:14,325 INFO L263 TraceCheckSpWp]: Trace formula consists of 2638 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-21 09:37:14,328 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 09:37:14,415 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2022-07-21 09:37:14,416 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 09:37:14,416 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [846257721] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:37:14,416 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 09:37:14,416 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [18] total 20 [2022-07-21 09:37:14,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1132380332] [2022-07-21 09:37:14,416 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:37:14,416 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-21 09:37:14,416 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:37:14,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-21 09:37:14,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=329, Unknown=0, NotChecked=0, Total=380 [2022-07-21 09:37:14,417 INFO L87 Difference]: Start difference. First operand 269 states and 337 transitions. Second operand has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 2 states have call predecessors, (9), 1 states have call successors, (9) [2022-07-21 09:37:14,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:37:14,554 INFO L93 Difference]: Finished difference Result 424 states and 549 transitions. [2022-07-21 09:37:14,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-21 09:37:14,555 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 2 states have call predecessors, (9), 1 states have call successors, (9) Word has length 87 [2022-07-21 09:37:14,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:37:14,557 INFO L225 Difference]: With dead ends: 424 [2022-07-21 09:37:14,557 INFO L226 Difference]: Without dead ends: 262 [2022-07-21 09:37:14,559 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=57, Invalid=363, Unknown=0, NotChecked=0, Total=420 [2022-07-21 09:37:14,559 INFO L413 NwaCegarLoop]: 98 mSDtfsCounter, 3 mSDsluCounter, 148 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 246 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 26 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 09:37:14,560 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 246 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 28 Invalid, 0 Unknown, 26 Unchecked, 0.1s Time] [2022-07-21 09:37:14,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262 states. [2022-07-21 09:37:14,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262 to 262. [2022-07-21 09:37:14,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 262 states, 178 states have (on average 1.1348314606741574) internal successors, (202), 188 states have internal predecessors, (202), 58 states have call successors, (58), 25 states have call predecessors, (58), 25 states have return successors, (64), 48 states have call predecessors, (64), 55 states have call successors, (64) [2022-07-21 09:37:14,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262 states to 262 states and 324 transitions. [2022-07-21 09:37:14,623 INFO L78 Accepts]: Start accepts. Automaton has 262 states and 324 transitions. Word has length 87 [2022-07-21 09:37:14,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:37:14,624 INFO L495 AbstractCegarLoop]: Abstraction has 262 states and 324 transitions. [2022-07-21 09:37:14,624 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 2 states have call predecessors, (9), 1 states have call successors, (9) [2022-07-21 09:37:14,624 INFO L276 IsEmpty]: Start isEmpty. Operand 262 states and 324 transitions. [2022-07-21 09:37:14,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-07-21 09:37:14,625 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:37:14,626 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 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] [2022-07-21 09:37:14,656 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-07-21 09:37:14,843 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,SelfDestructingSolverStorable21 [2022-07-21 09:37:14,843 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:37:14,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:37:14,844 INFO L85 PathProgramCache]: Analyzing trace with hash -375331136, now seen corresponding path program 1 times [2022-07-21 09:37:14,844 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:37:14,844 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1194736050] [2022-07-21 09:37:14,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:37:14,844 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:37:14,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:37:15,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 09:37:15,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:37:15,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-21 09:37:15,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:37:15,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 09:37:15,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:37:15,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-21 09:37:15,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:37:15,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-21 09:37:15,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:37:15,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-21 09:37:15,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:37:15,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-21 09:37:15,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:37:15,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-07-21 09:37:15,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:37:15,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-07-21 09:37:15,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:37:15,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-07-21 09:37:15,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:37:15,493 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 31 proven. 10 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-07-21 09:37:15,493 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:37:15,493 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1194736050] [2022-07-21 09:37:15,493 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1194736050] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 09:37:15,493 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1853606808] [2022-07-21 09:37:15,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:37:15,494 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:37:15,494 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 09:37:15,496 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) [2022-07-21 09:37:15,504 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-07-21 09:37:15,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:37:15,999 INFO L263 TraceCheckSpWp]: Trace formula consists of 2638 conjuncts, 50 conjunts are in the unsatisfiable core [2022-07-21 09:37:16,002 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 09:37:16,147 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 [2022-07-21 09:37:16,573 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 17 treesize of output 9 [2022-07-21 09:37:16,576 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 16 treesize of output 8 [2022-07-21 09:37:16,604 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2022-07-21 09:37:16,604 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 09:37:16,604 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1853606808] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:37:16,604 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 09:37:16,604 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [20] total 33 [2022-07-21 09:37:16,604 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1347732376] [2022-07-21 09:37:16,605 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:37:16,605 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-07-21 09:37:16,605 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:37:16,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-07-21 09:37:16,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=946, Unknown=0, NotChecked=0, Total=1056 [2022-07-21 09:37:16,606 INFO L87 Difference]: Start difference. First operand 262 states and 324 transitions. Second operand has 15 states, 15 states have (on average 3.6666666666666665) internal successors, (55), 11 states have internal predecessors, (55), 5 states have call successors, (11), 4 states have call predecessors, (11), 5 states have return successors, (10), 5 states have call predecessors, (10), 5 states have call successors, (10) [2022-07-21 09:37:16,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:37:16,903 INFO L93 Difference]: Finished difference Result 395 states and 489 transitions. [2022-07-21 09:37:16,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-21 09:37:16,904 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.6666666666666665) internal successors, (55), 11 states have internal predecessors, (55), 5 states have call successors, (11), 4 states have call predecessors, (11), 5 states have return successors, (10), 5 states have call predecessors, (10), 5 states have call successors, (10) Word has length 88 [2022-07-21 09:37:16,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:37:16,906 INFO L225 Difference]: With dead ends: 395 [2022-07-21 09:37:16,906 INFO L226 Difference]: Without dead ends: 293 [2022-07-21 09:37:16,907 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 94 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 307 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=143, Invalid=1189, Unknown=0, NotChecked=0, Total=1332 [2022-07-21 09:37:16,908 INFO L413 NwaCegarLoop]: 157 mSDtfsCounter, 52 mSDsluCounter, 1250 mSDsCounter, 0 mSdLazyCounter, 163 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 1407 SdHoareTripleChecker+Invalid, 451 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 284 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-21 09:37:16,908 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 1407 Invalid, 451 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 163 Invalid, 0 Unknown, 284 Unchecked, 0.2s Time] [2022-07-21 09:37:16,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 293 states. [2022-07-21 09:37:16,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 293 to 264. [2022-07-21 09:37:16,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 264 states, 180 states have (on average 1.1222222222222222) internal successors, (202), 189 states have internal predecessors, (202), 56 states have call successors, (56), 26 states have call predecessors, (56), 27 states have return successors, (62), 48 states have call predecessors, (62), 53 states have call successors, (62) [2022-07-21 09:37:16,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 264 states and 320 transitions. [2022-07-21 09:37:16,950 INFO L78 Accepts]: Start accepts. Automaton has 264 states and 320 transitions. Word has length 88 [2022-07-21 09:37:16,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:37:16,950 INFO L495 AbstractCegarLoop]: Abstraction has 264 states and 320 transitions. [2022-07-21 09:37:16,950 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.6666666666666665) internal successors, (55), 11 states have internal predecessors, (55), 5 states have call successors, (11), 4 states have call predecessors, (11), 5 states have return successors, (10), 5 states have call predecessors, (10), 5 states have call successors, (10) [2022-07-21 09:37:16,951 INFO L276 IsEmpty]: Start isEmpty. Operand 264 states and 320 transitions. [2022-07-21 09:37:16,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-07-21 09:37:16,952 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:37:16,952 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 4, 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] [2022-07-21 09:37:16,983 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-07-21 09:37:17,167 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,SelfDestructingSolverStorable22 [2022-07-21 09:37:17,168 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:37:17,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:37:17,168 INFO L85 PathProgramCache]: Analyzing trace with hash -253022058, now seen corresponding path program 1 times [2022-07-21 09:37:17,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:37:17,168 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1630086860] [2022-07-21 09:37:17,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:37:17,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:37:17,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:37:17,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 09:37:17,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:37:17,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-21 09:37:17,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:37:17,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 09:37:17,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:37:17,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-21 09:37:17,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:37:17,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-21 09:37:17,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:37:17,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-21 09:37:17,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:37:17,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-21 09:37:17,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:37:17,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-07-21 09:37:17,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:37:17,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-21 09:37:17,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:37:17,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-07-21 09:37:17,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:37:17,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-21 09:37:17,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:37:17,303 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2022-07-21 09:37:17,304 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:37:17,304 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1630086860] [2022-07-21 09:37:17,304 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1630086860] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:37:17,304 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:37:17,304 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 09:37:17,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1405369225] [2022-07-21 09:37:17,305 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:37:17,305 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 09:37:17,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:37:17,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 09:37:17,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 09:37:17,306 INFO L87 Difference]: Start difference. First operand 264 states and 320 transitions. Second operand has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 2 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) [2022-07-21 09:37:17,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:37:17,349 INFO L93 Difference]: Finished difference Result 278 states and 337 transitions. [2022-07-21 09:37:17,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 09:37:17,350 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 2 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) Word has length 90 [2022-07-21 09:37:17,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:37:17,351 INFO L225 Difference]: With dead ends: 278 [2022-07-21 09:37:17,352 INFO L226 Difference]: Without dead ends: 265 [2022-07-21 09:37:17,352 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 09:37:17,354 INFO L413 NwaCegarLoop]: 101 mSDtfsCounter, 0 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 197 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 09:37:17,354 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 197 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 09:37:17,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 265 states. [2022-07-21 09:37:17,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 265 to 265. [2022-07-21 09:37:17,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 265 states, 181 states have (on average 1.1215469613259668) internal successors, (203), 190 states have internal predecessors, (203), 56 states have call successors, (56), 26 states have call predecessors, (56), 27 states have return successors, (62), 48 states have call predecessors, (62), 53 states have call successors, (62) [2022-07-21 09:37:17,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265 states to 265 states and 321 transitions. [2022-07-21 09:37:17,396 INFO L78 Accepts]: Start accepts. Automaton has 265 states and 321 transitions. Word has length 90 [2022-07-21 09:37:17,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:37:17,397 INFO L495 AbstractCegarLoop]: Abstraction has 265 states and 321 transitions. [2022-07-21 09:37:17,397 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 2 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) [2022-07-21 09:37:17,398 INFO L276 IsEmpty]: Start isEmpty. Operand 265 states and 321 transitions. [2022-07-21 09:37:17,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-07-21 09:37:17,399 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:37:17,399 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 4, 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] [2022-07-21 09:37:17,399 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-07-21 09:37:17,399 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:37:17,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:37:17,400 INFO L85 PathProgramCache]: Analyzing trace with hash -266130098, now seen corresponding path program 1 times [2022-07-21 09:37:17,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:37:17,400 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [44486126] [2022-07-21 09:37:17,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:37:17,401 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:37:17,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:37:17,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 09:37:17,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:37:17,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-21 09:37:17,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:37:17,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 09:37:17,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:37:17,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-21 09:37:17,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:37:17,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-21 09:37:17,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:37:17,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-21 09:37:17,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:37:17,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-21 09:37:17,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:37:17,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-07-21 09:37:17,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:37:17,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-21 09:37:17,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:37:17,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-07-21 09:37:17,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:37:17,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-21 09:37:17,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:37:17,630 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2022-07-21 09:37:17,630 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:37:17,630 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [44486126] [2022-07-21 09:37:17,630 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [44486126] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:37:17,631 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:37:17,631 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-21 09:37:17,631 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [93402228] [2022-07-21 09:37:17,631 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:37:17,632 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-21 09:37:17,632 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:37:17,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-21 09:37:17,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-21 09:37:17,633 INFO L87 Difference]: Start difference. First operand 265 states and 321 transitions. Second operand has 8 states, 7 states have (on average 4.857142857142857) internal successors, (34), 7 states have internal predecessors, (34), 4 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2022-07-21 09:37:17,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:37:17,905 INFO L93 Difference]: Finished difference Result 306 states and 381 transitions. [2022-07-21 09:37:17,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-21 09:37:17,905 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 4.857142857142857) internal successors, (34), 7 states have internal predecessors, (34), 4 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 90 [2022-07-21 09:37:17,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:37:17,906 INFO L225 Difference]: With dead ends: 306 [2022-07-21 09:37:17,906 INFO L226 Difference]: Without dead ends: 304 [2022-07-21 09:37:17,907 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2022-07-21 09:37:17,907 INFO L413 NwaCegarLoop]: 131 mSDtfsCounter, 24 mSDsluCounter, 641 mSDsCounter, 0 mSdLazyCounter, 168 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 772 SdHoareTripleChecker+Invalid, 183 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 168 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-21 09:37:17,908 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 772 Invalid, 183 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 168 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-21 09:37:17,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 304 states. [2022-07-21 09:37:17,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 304 to 292. [2022-07-21 09:37:17,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 292 states, 194 states have (on average 1.1237113402061856) internal successors, (218), 205 states have internal predecessors, (218), 69 states have call successors, (69), 27 states have call predecessors, (69), 28 states have return successors, (76), 59 states have call predecessors, (76), 66 states have call successors, (76) [2022-07-21 09:37:17,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 292 states to 292 states and 363 transitions. [2022-07-21 09:37:17,959 INFO L78 Accepts]: Start accepts. Automaton has 292 states and 363 transitions. Word has length 90 [2022-07-21 09:37:17,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:37:17,960 INFO L495 AbstractCegarLoop]: Abstraction has 292 states and 363 transitions. [2022-07-21 09:37:17,960 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 4.857142857142857) internal successors, (34), 7 states have internal predecessors, (34), 4 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2022-07-21 09:37:17,960 INFO L276 IsEmpty]: Start isEmpty. Operand 292 states and 363 transitions. [2022-07-21 09:37:17,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-07-21 09:37:17,961 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:37:17,962 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 4, 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] [2022-07-21 09:37:17,962 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-07-21 09:37:17,962 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:37:17,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:37:17,962 INFO L85 PathProgramCache]: Analyzing trace with hash -195763756, now seen corresponding path program 1 times [2022-07-21 09:37:17,963 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:37:17,963 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1495000086] [2022-07-21 09:37:17,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:37:17,963 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:37:18,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:37:18,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 09:37:18,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:37:18,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-21 09:37:18,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:37:18,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 09:37:18,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:37:18,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-21 09:37:18,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:37:18,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-21 09:37:18,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:37:18,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-21 09:37:18,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:37:18,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-21 09:37:18,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:37:18,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-07-21 09:37:18,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:37:18,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-21 09:37:18,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:37:18,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-07-21 09:37:18,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:37:18,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-21 09:37:18,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:37:18,336 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2022-07-21 09:37:18,336 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:37:18,336 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1495000086] [2022-07-21 09:37:18,337 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1495000086] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:37:18,337 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:37:18,337 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-07-21 09:37:18,337 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [233244318] [2022-07-21 09:37:18,337 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:37:18,338 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-07-21 09:37:18,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:37:18,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-07-21 09:37:18,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=132, Unknown=0, NotChecked=0, Total=156 [2022-07-21 09:37:18,339 INFO L87 Difference]: Start difference. First operand 292 states and 363 transitions. Second operand has 13 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 12 states have internal predecessors, (34), 6 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (11), 5 states have call predecessors, (11), 5 states have call successors, (11) [2022-07-21 09:37:19,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:37:19,114 INFO L93 Difference]: Finished difference Result 316 states and 394 transitions. [2022-07-21 09:37:19,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-21 09:37:19,115 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 12 states have internal predecessors, (34), 6 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (11), 5 states have call predecessors, (11), 5 states have call successors, (11) Word has length 90 [2022-07-21 09:37:19,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:37:19,116 INFO L225 Difference]: With dead ends: 316 [2022-07-21 09:37:19,117 INFO L226 Difference]: Without dead ends: 314 [2022-07-21 09:37:19,117 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=75, Invalid=387, Unknown=0, NotChecked=0, Total=462 [2022-07-21 09:37:19,118 INFO L413 NwaCegarLoop]: 125 mSDtfsCounter, 63 mSDsluCounter, 826 mSDsCounter, 0 mSdLazyCounter, 585 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 951 SdHoareTripleChecker+Invalid, 636 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 585 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-21 09:37:19,118 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 951 Invalid, 636 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 585 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-21 09:37:19,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 314 states. [2022-07-21 09:37:19,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 314 to 301. [2022-07-21 09:37:19,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 301 states, 200 states have (on average 1.13) internal successors, (226), 211 states have internal predecessors, (226), 71 states have call successors, (71), 28 states have call predecessors, (71), 29 states have return successors, (78), 61 states have call predecessors, (78), 68 states have call successors, (78) [2022-07-21 09:37:19,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 301 states to 301 states and 375 transitions. [2022-07-21 09:37:19,177 INFO L78 Accepts]: Start accepts. Automaton has 301 states and 375 transitions. Word has length 90 [2022-07-21 09:37:19,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:37:19,177 INFO L495 AbstractCegarLoop]: Abstraction has 301 states and 375 transitions. [2022-07-21 09:37:19,177 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 12 states have internal predecessors, (34), 6 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (11), 5 states have call predecessors, (11), 5 states have call successors, (11) [2022-07-21 09:37:19,177 INFO L276 IsEmpty]: Start isEmpty. Operand 301 states and 375 transitions. [2022-07-21 09:37:19,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-07-21 09:37:19,179 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:37:19,179 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 4, 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] [2022-07-21 09:37:19,180 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-07-21 09:37:19,180 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:37:19,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:37:19,180 INFO L85 PathProgramCache]: Analyzing trace with hash -747210356, now seen corresponding path program 1 times [2022-07-21 09:37:19,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:37:19,181 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [281066366] [2022-07-21 09:37:19,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:37:19,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:37:19,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:37:19,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 09:37:19,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:37:19,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-21 09:37:19,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:37:19,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 09:37:19,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:37:19,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-21 09:37:19,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:37:19,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-21 09:37:19,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:37:19,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-21 09:37:19,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:37:19,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-21 09:37:19,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:37:19,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-07-21 09:37:19,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:37:19,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-21 09:37:19,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:37:19,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-07-21 09:37:19,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:37:19,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-21 09:37:19,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:37:19,747 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2022-07-21 09:37:19,748 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:37:19,748 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [281066366] [2022-07-21 09:37:19,748 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [281066366] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:37:19,748 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:37:19,748 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-21 09:37:19,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1006184188] [2022-07-21 09:37:19,749 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:37:19,750 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-21 09:37:19,750 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:37:19,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-21 09:37:19,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-07-21 09:37:19,751 INFO L87 Difference]: Start difference. First operand 301 states and 375 transitions. Second operand has 10 states, 10 states have (on average 3.4) internal successors, (34), 10 states have internal predecessors, (34), 4 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2022-07-21 09:37:20,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:37:20,402 INFO L93 Difference]: Finished difference Result 359 states and 455 transitions. [2022-07-21 09:37:20,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-21 09:37:20,403 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.4) internal successors, (34), 10 states have internal predecessors, (34), 4 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 90 [2022-07-21 09:37:20,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:37:20,405 INFO L225 Difference]: With dead ends: 359 [2022-07-21 09:37:20,405 INFO L226 Difference]: Without dead ends: 337 [2022-07-21 09:37:20,406 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=64, Invalid=176, Unknown=0, NotChecked=0, Total=240 [2022-07-21 09:37:20,406 INFO L413 NwaCegarLoop]: 107 mSDtfsCounter, 23 mSDsluCounter, 412 mSDsCounter, 0 mSdLazyCounter, 317 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 519 SdHoareTripleChecker+Invalid, 368 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 317 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-21 09:37:20,407 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 519 Invalid, 368 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 317 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-21 09:37:20,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 337 states. [2022-07-21 09:37:20,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 337 to 320. [2022-07-21 09:37:20,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 320 states, 210 states have (on average 1.1285714285714286) internal successors, (237), 220 states have internal predecessors, (237), 80 states have call successors, (80), 28 states have call predecessors, (80), 29 states have return successors, (87), 71 states have call predecessors, (87), 77 states have call successors, (87) [2022-07-21 09:37:20,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 320 states to 320 states and 404 transitions. [2022-07-21 09:37:20,470 INFO L78 Accepts]: Start accepts. Automaton has 320 states and 404 transitions. Word has length 90 [2022-07-21 09:37:20,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:37:20,470 INFO L495 AbstractCegarLoop]: Abstraction has 320 states and 404 transitions. [2022-07-21 09:37:20,470 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.4) internal successors, (34), 10 states have internal predecessors, (34), 4 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2022-07-21 09:37:20,470 INFO L276 IsEmpty]: Start isEmpty. Operand 320 states and 404 transitions. [2022-07-21 09:37:20,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-07-21 09:37:20,472 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:37:20,472 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 4, 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] [2022-07-21 09:37:20,472 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-07-21 09:37:20,472 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:37:20,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:37:20,473 INFO L85 PathProgramCache]: Analyzing trace with hash -676844014, now seen corresponding path program 1 times [2022-07-21 09:37:20,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:37:20,473 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [4202497] [2022-07-21 09:37:20,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:37:20,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:37:20,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:37:21,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 09:37:21,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:37:21,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-21 09:37:21,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:37:21,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 09:37:21,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:37:21,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-21 09:37:21,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:37:21,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-21 09:37:21,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:37:21,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-21 09:37:21,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:37:21,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-21 09:37:21,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:37:21,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-07-21 09:37:21,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:37:21,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-21 09:37:21,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:37:21,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-07-21 09:37:21,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:37:21,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-21 09:37:21,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:37:21,188 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2022-07-21 09:37:21,188 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:37:21,189 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [4202497] [2022-07-21 09:37:21,189 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [4202497] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:37:21,189 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:37:21,189 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-07-21 09:37:21,189 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1910916243] [2022-07-21 09:37:21,189 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:37:21,190 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-07-21 09:37:21,190 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:37:21,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-07-21 09:37:21,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2022-07-21 09:37:21,191 INFO L87 Difference]: Start difference. First operand 320 states and 404 transitions. Second operand has 13 states, 11 states have (on average 3.090909090909091) internal successors, (34), 12 states have internal predecessors, (34), 6 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (11), 4 states have call predecessors, (11), 5 states have call successors, (11) [2022-07-21 09:37:21,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:37:21,934 INFO L93 Difference]: Finished difference Result 343 states and 433 transitions. [2022-07-21 09:37:21,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-21 09:37:21,935 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 3.090909090909091) internal successors, (34), 12 states have internal predecessors, (34), 6 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (11), 4 states have call predecessors, (11), 5 states have call successors, (11) Word has length 90 [2022-07-21 09:37:21,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:37:21,937 INFO L225 Difference]: With dead ends: 343 [2022-07-21 09:37:21,937 INFO L226 Difference]: Without dead ends: 341 [2022-07-21 09:37:21,938 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=56, Invalid=286, Unknown=0, NotChecked=0, Total=342 [2022-07-21 09:37:21,938 INFO L413 NwaCegarLoop]: 107 mSDtfsCounter, 33 mSDsluCounter, 779 mSDsCounter, 0 mSdLazyCounter, 492 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 886 SdHoareTripleChecker+Invalid, 528 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 492 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-21 09:37:21,938 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 886 Invalid, 528 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 492 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-21 09:37:21,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 341 states. [2022-07-21 09:37:22,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 341 to 324. [2022-07-21 09:37:22,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 324 states, 213 states have (on average 1.1314553990610328) internal successors, (241), 222 states have internal predecessors, (241), 81 states have call successors, (81), 28 states have call predecessors, (81), 29 states have return successors, (88), 73 states have call predecessors, (88), 78 states have call successors, (88) [2022-07-21 09:37:22,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 324 states to 324 states and 410 transitions. [2022-07-21 09:37:22,007 INFO L78 Accepts]: Start accepts. Automaton has 324 states and 410 transitions. Word has length 90 [2022-07-21 09:37:22,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:37:22,008 INFO L495 AbstractCegarLoop]: Abstraction has 324 states and 410 transitions. [2022-07-21 09:37:22,008 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 3.090909090909091) internal successors, (34), 12 states have internal predecessors, (34), 6 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (11), 4 states have call predecessors, (11), 5 states have call successors, (11) [2022-07-21 09:37:22,008 INFO L276 IsEmpty]: Start isEmpty. Operand 324 states and 410 transitions. [2022-07-21 09:37:22,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-07-21 09:37:22,010 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:37:22,010 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 4, 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] [2022-07-21 09:37:22,010 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-07-21 09:37:22,011 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:37:22,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:37:22,011 INFO L85 PathProgramCache]: Analyzing trace with hash -689952054, now seen corresponding path program 1 times [2022-07-21 09:37:22,011 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:37:22,011 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1561803861] [2022-07-21 09:37:22,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:37:22,012 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:37:22,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:37:22,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 09:37:22,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:37:22,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-21 09:37:22,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:37:22,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 09:37:22,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:37:22,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-21 09:37:22,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:37:22,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-21 09:37:22,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:37:22,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-21 09:37:22,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:37:22,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-21 09:37:22,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:37:22,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-07-21 09:37:22,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:37:22,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-21 09:37:22,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:37:22,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-07-21 09:37:22,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:37:22,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-21 09:37:22,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:37:22,478 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 12 proven. 18 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2022-07-21 09:37:22,478 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:37:22,479 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1561803861] [2022-07-21 09:37:22,479 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1561803861] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 09:37:22,479 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [490000066] [2022-07-21 09:37:22,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:37:22,479 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:37:22,480 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 09:37:22,481 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) [2022-07-21 09:37:22,499 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-07-21 09:37:22,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:37:22,954 INFO L263 TraceCheckSpWp]: Trace formula consists of 2634 conjuncts, 44 conjunts are in the unsatisfiable core [2022-07-21 09:37:22,958 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 09:37:23,324 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 49 treesize of output 33 [2022-07-21 09:37:23,438 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 7 proven. 45 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-07-21 09:37:23,439 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 09:37:23,665 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 [2022-07-21 09:37:23,707 INFO L356 Elim1Store]: treesize reduction 4, result has 63.6 percent of original size [2022-07-21 09:37:23,708 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 30 treesize of output 25 [2022-07-21 09:37:23,716 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 6 proven. 24 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2022-07-21 09:37:23,716 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [490000066] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 09:37:23,716 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-21 09:37:23,717 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12, 10] total 22 [2022-07-21 09:37:23,717 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [723595641] [2022-07-21 09:37:23,717 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-21 09:37:23,717 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-07-21 09:37:23,717 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:37:23,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-07-21 09:37:23,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=401, Unknown=0, NotChecked=0, Total=462 [2022-07-21 09:37:23,718 INFO L87 Difference]: Start difference. First operand 324 states and 410 transitions. Second operand has 22 states, 21 states have (on average 3.2857142857142856) internal successors, (69), 21 states have internal predecessors, (69), 10 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (20), 8 states have call predecessors, (20), 9 states have call successors, (20) [2022-07-21 09:37:25,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:37:25,949 INFO L93 Difference]: Finished difference Result 509 states and 694 transitions. [2022-07-21 09:37:25,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-07-21 09:37:25,950 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 3.2857142857142856) internal successors, (69), 21 states have internal predecessors, (69), 10 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (20), 8 states have call predecessors, (20), 9 states have call successors, (20) Word has length 90 [2022-07-21 09:37:25,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:37:25,953 INFO L225 Difference]: With dead ends: 509 [2022-07-21 09:37:25,953 INFO L226 Difference]: Without dead ends: 494 [2022-07-21 09:37:25,954 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 247 GetRequests, 187 SyntacticMatches, 10 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 725 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=346, Invalid=2306, Unknown=0, NotChecked=0, Total=2652 [2022-07-21 09:37:25,955 INFO L413 NwaCegarLoop]: 164 mSDtfsCounter, 164 mSDsluCounter, 1483 mSDsCounter, 0 mSdLazyCounter, 1274 mSolverCounterSat, 193 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 183 SdHoareTripleChecker+Valid, 1647 SdHoareTripleChecker+Invalid, 1684 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 193 IncrementalHoareTripleChecker+Valid, 1274 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 217 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-07-21 09:37:25,955 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [183 Valid, 1647 Invalid, 1684 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [193 Valid, 1274 Invalid, 0 Unknown, 217 Unchecked, 1.2s Time] [2022-07-21 09:37:25,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 494 states. [2022-07-21 09:37:26,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 494 to 340. [2022-07-21 09:37:26,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 340 states, 221 states have (on average 1.1266968325791855) internal successors, (249), 229 states have internal predecessors, (249), 89 states have call successors, (89), 28 states have call predecessors, (89), 29 states have return successors, (100), 82 states have call predecessors, (100), 86 states have call successors, (100) [2022-07-21 09:37:26,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 340 states to 340 states and 438 transitions. [2022-07-21 09:37:26,033 INFO L78 Accepts]: Start accepts. Automaton has 340 states and 438 transitions. Word has length 90 [2022-07-21 09:37:26,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:37:26,033 INFO L495 AbstractCegarLoop]: Abstraction has 340 states and 438 transitions. [2022-07-21 09:37:26,034 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 3.2857142857142856) internal successors, (69), 21 states have internal predecessors, (69), 10 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (20), 8 states have call predecessors, (20), 9 states have call successors, (20) [2022-07-21 09:37:26,034 INFO L276 IsEmpty]: Start isEmpty. Operand 340 states and 438 transitions. [2022-07-21 09:37:26,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2022-07-21 09:37:26,036 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:37:26,036 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 09:37:26,067 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2022-07-21 09:37:26,259 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:37:26,260 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:37:26,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:37:26,260 INFO L85 PathProgramCache]: Analyzing trace with hash -1680266801, now seen corresponding path program 1 times [2022-07-21 09:37:26,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:37:26,260 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [186712245] [2022-07-21 09:37:26,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:37:26,260 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:37:26,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:37:26,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 09:37:26,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:37:26,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-21 09:37:26,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:37:26,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 09:37:26,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:37:26,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-21 09:37:26,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:37:26,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-21 09:37:26,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:37:26,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-21 09:37:26,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:37:26,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-21 09:37:26,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:37:26,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-21 09:37:26,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:37:26,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-21 09:37:26,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:37:26,559 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-07-21 09:37:26,559 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:37:26,560 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [186712245] [2022-07-21 09:37:26,560 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [186712245] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:37:26,560 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:37:26,560 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-07-21 09:37:26,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [212744620] [2022-07-21 09:37:26,560 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:37:26,562 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-21 09:37:26,562 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:37:26,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-21 09:37:26,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2022-07-21 09:37:26,563 INFO L87 Difference]: Start difference. First operand 340 states and 438 transitions. Second operand has 14 states, 13 states have (on average 3.5384615384615383) internal successors, (46), 11 states have internal predecessors, (46), 2 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (9), 2 states have call predecessors, (9), 1 states have call successors, (9) [2022-07-21 09:37:27,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:37:27,165 INFO L93 Difference]: Finished difference Result 346 states and 443 transitions. [2022-07-21 09:37:27,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-21 09:37:27,165 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 3.5384615384615383) internal successors, (46), 11 states have internal predecessors, (46), 2 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (9), 2 states have call predecessors, (9), 1 states have call successors, (9) Word has length 89 [2022-07-21 09:37:27,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:37:27,167 INFO L225 Difference]: With dead ends: 346 [2022-07-21 09:37:27,168 INFO L226 Difference]: Without dead ends: 344 [2022-07-21 09:37:27,168 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=123, Invalid=527, Unknown=0, NotChecked=0, Total=650 [2022-07-21 09:37:27,169 INFO L413 NwaCegarLoop]: 97 mSDtfsCounter, 60 mSDsluCounter, 540 mSDsCounter, 0 mSdLazyCounter, 612 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 637 SdHoareTripleChecker+Invalid, 649 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 612 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-21 09:37:27,169 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 637 Invalid, 649 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 612 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-21 09:37:27,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 344 states. [2022-07-21 09:37:27,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 344 to 344. [2022-07-21 09:37:27,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 344 states, 224 states have (on average 1.125) internal successors, (252), 232 states have internal predecessors, (252), 89 states have call successors, (89), 29 states have call predecessors, (89), 30 states have return successors, (100), 82 states have call predecessors, (100), 86 states have call successors, (100) [2022-07-21 09:37:27,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 344 states to 344 states and 441 transitions. [2022-07-21 09:37:27,242 INFO L78 Accepts]: Start accepts. Automaton has 344 states and 441 transitions. Word has length 89 [2022-07-21 09:37:27,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:37:27,243 INFO L495 AbstractCegarLoop]: Abstraction has 344 states and 441 transitions. [2022-07-21 09:37:27,243 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 3.5384615384615383) internal successors, (46), 11 states have internal predecessors, (46), 2 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (9), 2 states have call predecessors, (9), 1 states have call successors, (9) [2022-07-21 09:37:27,243 INFO L276 IsEmpty]: Start isEmpty. Operand 344 states and 441 transitions. [2022-07-21 09:37:27,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-07-21 09:37:27,245 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:37:27,245 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 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] [2022-07-21 09:37:27,245 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-07-21 09:37:27,245 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:37:27,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:37:27,246 INFO L85 PathProgramCache]: Analyzing trace with hash -1792661847, now seen corresponding path program 1 times [2022-07-21 09:37:27,246 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:37:27,246 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [670120070] [2022-07-21 09:37:27,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:37:27,246 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:37:27,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:37:27,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 09:37:27,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:37:27,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-21 09:37:27,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:37:27,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 09:37:27,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:37:27,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-21 09:37:27,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:37:27,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-21 09:37:27,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:37:27,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-21 09:37:27,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:37:27,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-21 09:37:27,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:37:27,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-07-21 09:37:27,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:37:27,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-21 09:37:27,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:37:27,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-07-21 09:37:27,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:37:27,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-21 09:37:27,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:37:27,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-07-21 09:37:27,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:37:27,693 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2022-07-21 09:37:27,693 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:37:27,693 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [670120070] [2022-07-21 09:37:27,693 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [670120070] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:37:27,694 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:37:27,694 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-21 09:37:27,694 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [983352015] [2022-07-21 09:37:27,694 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:37:27,694 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-21 09:37:27,695 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:37:27,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-21 09:37:27,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-07-21 09:37:27,695 INFO L87 Difference]: Start difference. First operand 344 states and 441 transitions. Second operand has 10 states, 10 states have (on average 3.5) internal successors, (35), 10 states have internal predecessors, (35), 4 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) [2022-07-21 09:37:28,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:37:28,443 INFO L93 Difference]: Finished difference Result 382 states and 492 transitions. [2022-07-21 09:37:28,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-21 09:37:28,444 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.5) internal successors, (35), 10 states have internal predecessors, (35), 4 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) Word has length 96 [2022-07-21 09:37:28,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:37:28,446 INFO L225 Difference]: With dead ends: 382 [2022-07-21 09:37:28,446 INFO L226 Difference]: Without dead ends: 364 [2022-07-21 09:37:28,447 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=51, Invalid=159, Unknown=0, NotChecked=0, Total=210 [2022-07-21 09:37:28,447 INFO L413 NwaCegarLoop]: 110 mSDtfsCounter, 16 mSDsluCounter, 494 mSDsCounter, 0 mSdLazyCounter, 356 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 604 SdHoareTripleChecker+Invalid, 385 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 356 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-21 09:37:28,447 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 604 Invalid, 385 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 356 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-21 09:37:28,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 364 states. [2022-07-21 09:37:28,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 364 to 355. [2022-07-21 09:37:28,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 355 states, 229 states have (on average 1.1266375545851528) internal successors, (258), 237 states have internal predecessors, (258), 95 states have call successors, (95), 29 states have call predecessors, (95), 30 states have return successors, (106), 88 states have call predecessors, (106), 92 states have call successors, (106) [2022-07-21 09:37:28,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 355 states to 355 states and 459 transitions. [2022-07-21 09:37:28,526 INFO L78 Accepts]: Start accepts. Automaton has 355 states and 459 transitions. Word has length 96 [2022-07-21 09:37:28,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:37:28,527 INFO L495 AbstractCegarLoop]: Abstraction has 355 states and 459 transitions. [2022-07-21 09:37:28,527 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.5) internal successors, (35), 10 states have internal predecessors, (35), 4 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) [2022-07-21 09:37:28,527 INFO L276 IsEmpty]: Start isEmpty. Operand 355 states and 459 transitions. [2022-07-21 09:37:28,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-07-21 09:37:28,529 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:37:28,529 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 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] [2022-07-21 09:37:28,530 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-07-21 09:37:28,530 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:37:28,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:37:28,530 INFO L85 PathProgramCache]: Analyzing trace with hash -1410948513, now seen corresponding path program 1 times [2022-07-21 09:37:28,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:37:28,531 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1823322042] [2022-07-21 09:37:28,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:37:28,531 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:37:28,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:37:28,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 09:37:28,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:37:28,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-21 09:37:28,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:37:28,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 09:37:28,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:37:28,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-21 09:37:28,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:37:28,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-21 09:37:28,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:37:28,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-21 09:37:28,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:37:28,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-21 09:37:28,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:37:28,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-07-21 09:37:28,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:37:28,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-21 09:37:28,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:37:28,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-07-21 09:37:28,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:37:28,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-21 09:37:28,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:37:28,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-07-21 09:37:28,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:37:28,762 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2022-07-21 09:37:28,763 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:37:28,763 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1823322042] [2022-07-21 09:37:28,763 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1823322042] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:37:28,763 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:37:28,763 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-21 09:37:28,764 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [129305118] [2022-07-21 09:37:28,764 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:37:28,764 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-21 09:37:28,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:37:28,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-21 09:37:28,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-21 09:37:28,765 INFO L87 Difference]: Start difference. First operand 355 states and 459 transitions. Second operand has 8 states, 7 states have (on average 5.0) internal successors, (35), 7 states have internal predecessors, (35), 4 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2022-07-21 09:37:29,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:37:29,043 INFO L93 Difference]: Finished difference Result 374 states and 482 transitions. [2022-07-21 09:37:29,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-21 09:37:29,043 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 5.0) internal successors, (35), 7 states have internal predecessors, (35), 4 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 96 [2022-07-21 09:37:29,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:37:29,045 INFO L225 Difference]: With dead ends: 374 [2022-07-21 09:37:29,045 INFO L226 Difference]: Without dead ends: 372 [2022-07-21 09:37:29,046 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2022-07-21 09:37:29,046 INFO L413 NwaCegarLoop]: 118 mSDtfsCounter, 23 mSDsluCounter, 575 mSDsCounter, 0 mSdLazyCounter, 183 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 693 SdHoareTripleChecker+Invalid, 197 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 183 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-21 09:37:29,046 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 693 Invalid, 197 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 183 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-21 09:37:29,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 372 states. [2022-07-21 09:37:29,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 372 to 361. [2022-07-21 09:37:29,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 361 states, 233 states have (on average 1.1244635193133048) internal successors, (262), 241 states have internal predecessors, (262), 96 states have call successors, (96), 30 states have call predecessors, (96), 31 states have return successors, (107), 89 states have call predecessors, (107), 93 states have call successors, (107) [2022-07-21 09:37:29,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 361 states to 361 states and 465 transitions. [2022-07-21 09:37:29,129 INFO L78 Accepts]: Start accepts. Automaton has 361 states and 465 transitions. Word has length 96 [2022-07-21 09:37:29,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:37:29,129 INFO L495 AbstractCegarLoop]: Abstraction has 361 states and 465 transitions. [2022-07-21 09:37:29,129 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 5.0) internal successors, (35), 7 states have internal predecessors, (35), 4 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2022-07-21 09:37:29,130 INFO L276 IsEmpty]: Start isEmpty. Operand 361 states and 465 transitions. [2022-07-21 09:37:29,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-07-21 09:37:29,131 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:37:29,131 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 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] [2022-07-21 09:37:29,132 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-07-21 09:37:29,132 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:37:29,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:37:29,132 INFO L85 PathProgramCache]: Analyzing trace with hash -1751987097, now seen corresponding path program 1 times [2022-07-21 09:37:29,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:37:29,133 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2045735809] [2022-07-21 09:37:29,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:37:29,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:37:29,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:37:29,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 09:37:29,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:37:29,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-21 09:37:29,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:37:29,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 09:37:29,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:37:29,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-21 09:37:29,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:37:29,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-21 09:37:29,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:37:29,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-21 09:37:29,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:37:29,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-21 09:37:29,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:37:29,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-07-21 09:37:29,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:37:29,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-21 09:37:29,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:37:29,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-07-21 09:37:29,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:37:29,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-21 09:37:29,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:37:29,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-07-21 09:37:29,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:37:29,653 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2022-07-21 09:37:29,653 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:37:29,653 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2045735809] [2022-07-21 09:37:29,653 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2045735809] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:37:29,653 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:37:29,654 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-07-21 09:37:29,654 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [614008425] [2022-07-21 09:37:29,654 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:37:29,654 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-07-21 09:37:29,654 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:37:29,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-07-21 09:37:29,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210 [2022-07-21 09:37:29,655 INFO L87 Difference]: Start difference. First operand 361 states and 465 transitions. Second operand has 15 states, 13 states have (on average 2.6923076923076925) internal successors, (35), 14 states have internal predecessors, (35), 6 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (12), 4 states have call predecessors, (12), 5 states have call successors, (12) [2022-07-21 09:37:30,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:37:30,321 INFO L93 Difference]: Finished difference Result 381 states and 489 transitions. [2022-07-21 09:37:30,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-21 09:37:30,322 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 13 states have (on average 2.6923076923076925) internal successors, (35), 14 states have internal predecessors, (35), 6 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (12), 4 states have call predecessors, (12), 5 states have call successors, (12) Word has length 96 [2022-07-21 09:37:30,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:37:30,324 INFO L225 Difference]: With dead ends: 381 [2022-07-21 09:37:30,324 INFO L226 Difference]: Without dead ends: 379 [2022-07-21 09:37:30,325 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=88, Invalid=418, Unknown=0, NotChecked=0, Total=506 [2022-07-21 09:37:30,325 INFO L413 NwaCegarLoop]: 121 mSDtfsCounter, 54 mSDsluCounter, 839 mSDsCounter, 0 mSdLazyCounter, 479 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 960 SdHoareTripleChecker+Invalid, 572 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 479 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-21 09:37:30,326 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 960 Invalid, 572 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [93 Valid, 479 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-21 09:37:30,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 379 states. [2022-07-21 09:37:30,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 379 to 368. [2022-07-21 09:37:30,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 368 states, 237 states have (on average 1.1223628691983123) internal successors, (266), 246 states have internal predecessors, (266), 98 states have call successors, (98), 31 states have call predecessors, (98), 32 states have return successors, (109), 90 states have call predecessors, (109), 95 states have call successors, (109) [2022-07-21 09:37:30,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 368 states to 368 states and 473 transitions. [2022-07-21 09:37:30,410 INFO L78 Accepts]: Start accepts. Automaton has 368 states and 473 transitions. Word has length 96 [2022-07-21 09:37:30,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:37:30,410 INFO L495 AbstractCegarLoop]: Abstraction has 368 states and 473 transitions. [2022-07-21 09:37:30,410 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 13 states have (on average 2.6923076923076925) internal successors, (35), 14 states have internal predecessors, (35), 6 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (12), 4 states have call predecessors, (12), 5 states have call successors, (12) [2022-07-21 09:37:30,411 INFO L276 IsEmpty]: Start isEmpty. Operand 368 states and 473 transitions. [2022-07-21 09:37:30,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-07-21 09:37:30,412 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:37:30,412 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 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] [2022-07-21 09:37:30,413 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-07-21 09:37:30,413 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:37:30,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:37:30,413 INFO L85 PathProgramCache]: Analyzing trace with hash 1241388199, now seen corresponding path program 1 times [2022-07-21 09:37:30,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:37:30,413 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [475701095] [2022-07-21 09:37:30,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:37:30,414 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:37:30,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:37:30,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 09:37:30,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:37:30,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-21 09:37:30,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:37:30,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 09:37:30,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:37:30,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-21 09:37:30,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:37:30,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-21 09:37:30,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:37:30,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-21 09:37:30,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:37:30,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-21 09:37:30,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:37:30,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-07-21 09:37:30,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:37:30,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-21 09:37:30,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:37:30,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-07-21 09:37:30,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:37:30,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-21 09:37:30,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:37:30,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-07-21 09:37:30,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:37:30,729 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 14 proven. 18 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2022-07-21 09:37:30,730 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:37:30,730 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [475701095] [2022-07-21 09:37:30,730 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [475701095] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 09:37:30,731 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1635343996] [2022-07-21 09:37:30,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:37:30,731 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:37:30,731 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 09:37:30,736 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) [2022-07-21 09:37:30,738 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-07-21 09:37:31,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:37:31,138 INFO L263 TraceCheckSpWp]: Trace formula consists of 2616 conjuncts, 44 conjunts are in the unsatisfiable core [2022-07-21 09:37:31,141 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 09:37:31,406 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 53 treesize of output 37 [2022-07-21 09:37:31,503 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 19 proven. 45 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2022-07-21 09:37:31,504 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 09:37:31,700 INFO L356 Elim1Store]: treesize reduction 4, result has 63.6 percent of original size [2022-07-21 09:37:31,700 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 20 treesize of output 19 [2022-07-21 09:37:31,707 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 8 proven. 24 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2022-07-21 09:37:31,707 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1635343996] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 09:37:31,707 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-21 09:37:31,707 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12, 10] total 21 [2022-07-21 09:37:31,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [36663100] [2022-07-21 09:37:31,707 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-21 09:37:31,708 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-07-21 09:37:31,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:37:31,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-07-21 09:37:31,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=362, Unknown=0, NotChecked=0, Total=420 [2022-07-21 09:37:31,708 INFO L87 Difference]: Start difference. First operand 368 states and 473 transitions. Second operand has 21 states, 20 states have (on average 3.6) internal successors, (72), 20 states have internal predecessors, (72), 10 states have call successors, (22), 3 states have call predecessors, (22), 5 states have return successors, (22), 9 states have call predecessors, (22), 10 states have call successors, (22) [2022-07-21 09:37:33,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:37:33,522 INFO L93 Difference]: Finished difference Result 602 states and 778 transitions. [2022-07-21 09:37:33,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-07-21 09:37:33,522 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 3.6) internal successors, (72), 20 states have internal predecessors, (72), 10 states have call successors, (22), 3 states have call predecessors, (22), 5 states have return successors, (22), 9 states have call predecessors, (22), 10 states have call successors, (22) Word has length 96 [2022-07-21 09:37:33,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:37:33,524 INFO L225 Difference]: With dead ends: 602 [2022-07-21 09:37:33,524 INFO L226 Difference]: Without dead ends: 492 [2022-07-21 09:37:33,525 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 256 GetRequests, 201 SyntacticMatches, 8 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 566 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=342, Invalid=2010, Unknown=0, NotChecked=0, Total=2352 [2022-07-21 09:37:33,526 INFO L413 NwaCegarLoop]: 137 mSDtfsCounter, 173 mSDsluCounter, 876 mSDsCounter, 0 mSdLazyCounter, 1363 mSolverCounterSat, 169 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 202 SdHoareTripleChecker+Valid, 1013 SdHoareTripleChecker+Invalid, 1706 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 169 IncrementalHoareTripleChecker+Valid, 1363 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 174 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-07-21 09:37:33,526 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [202 Valid, 1013 Invalid, 1706 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [169 Valid, 1363 Invalid, 0 Unknown, 174 Unchecked, 1.1s Time] [2022-07-21 09:37:33,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 492 states. [2022-07-21 09:37:33,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 492 to 371. [2022-07-21 09:37:33,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 371 states, 238 states have (on average 1.1008403361344539) internal successors, (262), 245 states have internal predecessors, (262), 100 states have call successors, (100), 31 states have call predecessors, (100), 32 states have return successors, (111), 94 states have call predecessors, (111), 97 states have call successors, (111) [2022-07-21 09:37:33,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 371 states to 371 states and 473 transitions. [2022-07-21 09:37:33,625 INFO L78 Accepts]: Start accepts. Automaton has 371 states and 473 transitions. Word has length 96 [2022-07-21 09:37:33,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:37:33,626 INFO L495 AbstractCegarLoop]: Abstraction has 371 states and 473 transitions. [2022-07-21 09:37:33,626 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 3.6) internal successors, (72), 20 states have internal predecessors, (72), 10 states have call successors, (22), 3 states have call predecessors, (22), 5 states have return successors, (22), 9 states have call predecessors, (22), 10 states have call successors, (22) [2022-07-21 09:37:33,626 INFO L276 IsEmpty]: Start isEmpty. Operand 371 states and 473 transitions. [2022-07-21 09:37:33,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2022-07-21 09:37:33,627 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:37:33,628 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 09:37:33,655 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-07-21 09:37:33,843 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:37:33,844 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:37:33,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:37:33,844 INFO L85 PathProgramCache]: Analyzing trace with hash 263298865, now seen corresponding path program 1 times [2022-07-21 09:37:33,844 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:37:33,844 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2065677911] [2022-07-21 09:37:33,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:37:33,844 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:37:34,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:37:34,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 09:37:34,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:37:34,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-21 09:37:34,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:37:34,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 09:37:34,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:37:34,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-21 09:37:34,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:37:34,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-21 09:37:34,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:37:34,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-21 09:37:34,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:37:34,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-21 09:37:34,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:37:34,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-21 09:37:34,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:37:34,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-21 09:37:34,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:37:34,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-21 09:37:34,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:37:34,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-07-21 09:37:34,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:37:34,456 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 24 proven. 11 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2022-07-21 09:37:34,456 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:37:34,456 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2065677911] [2022-07-21 09:37:34,456 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2065677911] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 09:37:34,456 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [971409571] [2022-07-21 09:37:34,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:37:34,457 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:37:34,457 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 09:37:34,460 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) [2022-07-21 09:37:34,488 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-07-21 09:37:34,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:37:34,965 INFO L263 TraceCheckSpWp]: Trace formula consists of 2683 conjuncts, 103 conjunts are in the unsatisfiable core [2022-07-21 09:37:34,969 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 09:37:35,061 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 [2022-07-21 09:37:39,253 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-07-21 09:37:39,253 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 17 treesize of output 23 [2022-07-21 09:37:39,259 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 8 treesize of output 4 [2022-07-21 09:37:39,298 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-07-21 09:37:39,298 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 21 treesize of output 27 [2022-07-21 09:37:39,667 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-21 09:37:39,668 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 09:37:39,675 INFO L356 Elim1Store]: treesize reduction 19, result has 32.1 percent of original size [2022-07-21 09:37:39,675 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 32 [2022-07-21 09:37:39,693 INFO L356 Elim1Store]: treesize reduction 10, result has 64.3 percent of original size [2022-07-21 09:37:39,694 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 22 treesize of output 34 [2022-07-21 09:37:39,697 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 11 treesize of output 7 [2022-07-21 09:37:39,706 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 19 treesize of output 22 [2022-07-21 09:37:39,718 INFO L356 Elim1Store]: treesize reduction 14, result has 39.1 percent of original size [2022-07-21 09:37:39,719 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 47 treesize of output 46 [2022-07-21 09:37:39,723 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-07-21 09:37:39,729 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 29 treesize of output 23 [2022-07-21 09:37:39,749 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 31 treesize of output 25 [2022-07-21 09:37:40,488 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 20 proven. 41 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-07-21 09:37:40,488 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 09:37:41,216 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-21 09:37:41,217 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 1 case distinctions, treesize of input 23 treesize of output 27 [2022-07-21 09:37:41,225 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-21 09:37:41,225 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 1 case distinctions, treesize of input 20 treesize of output 24 [2022-07-21 09:37:41,452 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_arrayElimArr_11 (Array Int Int)) (|ULTIMATE.start_aws_byte_cursor_advance_~#rv~6#1.base| Int) (v_ArrVal_2183 Int) (v_arrayElimArr_10 (Array Int Int)) (aux_div_v_ArrVal_2182_40 Int) (v_ArrVal_2176 (Array Int Int))) (or (not (= (select (select (store (store |c_#memory_$Pointer$.base| |ULTIMATE.start_aws_byte_cursor_advance_~#rv~6#1.base| (store (store (select |c_#memory_$Pointer$.base| |ULTIMATE.start_aws_byte_cursor_advance_~#rv~6#1.base|) 8 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_aws_byte_cursor_advance_~cursor#1.base|) (+ |c_ULTIMATE.start_aws_byte_cursor_advance_~cursor#1.offset| 8))) 0 v_ArrVal_2183)) |c_ULTIMATE.start_aws_byte_cursor_advance_~cursor#1.base| v_ArrVal_2176) |ULTIMATE.start_aws_byte_cursor_advance_~#rv~6#1.base|) 8) 0)) (< (mod (select (select |c_#memory_int| |c_ULTIMATE.start_aws_byte_cursor_advance_~cursor#1.base|) |c_ULTIMATE.start_aws_byte_cursor_advance_~cursor#1.offset|) 18446744073709551616) (mod (select v_arrayElimArr_10 0) 18446744073709551616)) (= (mod (select (select (store (store |c_#memory_int| |ULTIMATE.start_aws_byte_cursor_advance_~#rv~6#1.base| v_arrayElimArr_10) |c_ULTIMATE.start_aws_byte_cursor_advance_~cursor#1.base| v_arrayElimArr_11) |ULTIMATE.start_aws_byte_cursor_advance_~#rv~6#1.base|) 0) 18446744073709551616) 0) (not (= (select v_arrayElimArr_11 |c_ULTIMATE.start_aws_byte_cursor_advance_~cursor#1.offset|) (* 18446744073709551616 aux_div_v_ArrVal_2182_40))))) is different from false [2022-07-21 09:37:41,477 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [971409571] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 09:37:41,477 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-21 09:37:41,477 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 26] total 41 [2022-07-21 09:37:41,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [637488687] [2022-07-21 09:37:41,477 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-21 09:37:41,478 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-07-21 09:37:41,478 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:37:41,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-07-21 09:37:41,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=213, Invalid=2627, Unknown=26, NotChecked=104, Total=2970 [2022-07-21 09:37:41,479 INFO L87 Difference]: Start difference. First operand 371 states and 473 transitions. Second operand has 41 states, 37 states have (on average 2.891891891891892) internal successors, (107), 37 states have internal predecessors, (107), 16 states have call successors, (23), 5 states have call predecessors, (23), 8 states have return successors, (22), 13 states have call predecessors, (22), 15 states have call successors, (22) [2022-07-21 09:37:46,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:37:46,149 INFO L93 Difference]: Finished difference Result 495 states and 627 transitions. [2022-07-21 09:37:46,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-07-21 09:37:46,150 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 37 states have (on average 2.891891891891892) internal successors, (107), 37 states have internal predecessors, (107), 16 states have call successors, (23), 5 states have call predecessors, (23), 8 states have return successors, (22), 13 states have call predecessors, (22), 15 states have call successors, (22) Word has length 95 [2022-07-21 09:37:46,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:37:46,152 INFO L225 Difference]: With dead ends: 495 [2022-07-21 09:37:46,152 INFO L226 Difference]: Without dead ends: 437 [2022-07-21 09:37:46,155 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 112 SyntacticMatches, 9 SemanticMatches, 93 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 2304 ImplicationChecksByTransitivity, 9.5s TimeCoverageRelationStatistics Valid=675, Invalid=8044, Unknown=27, NotChecked=184, Total=8930 [2022-07-21 09:37:46,155 INFO L413 NwaCegarLoop]: 139 mSDtfsCounter, 129 mSDsluCounter, 991 mSDsCounter, 0 mSdLazyCounter, 1602 mSolverCounterSat, 191 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 146 SdHoareTripleChecker+Valid, 1130 SdHoareTripleChecker+Invalid, 2333 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 191 IncrementalHoareTripleChecker+Valid, 1602 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 540 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-21 09:37:46,156 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [146 Valid, 1130 Invalid, 2333 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [191 Valid, 1602 Invalid, 0 Unknown, 540 Unchecked, 1.0s Time] [2022-07-21 09:37:46,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 437 states. [2022-07-21 09:37:46,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 437 to 374. [2022-07-21 09:37:46,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 374 states, 242 states have (on average 1.0991735537190082) internal successors, (266), 249 states have internal predecessors, (266), 97 states have call successors, (97), 33 states have call predecessors, (97), 34 states have return successors, (104), 91 states have call predecessors, (104), 94 states have call successors, (104) [2022-07-21 09:37:46,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 374 states to 374 states and 467 transitions. [2022-07-21 09:37:46,243 INFO L78 Accepts]: Start accepts. Automaton has 374 states and 467 transitions. Word has length 95 [2022-07-21 09:37:46,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:37:46,243 INFO L495 AbstractCegarLoop]: Abstraction has 374 states and 467 transitions. [2022-07-21 09:37:46,244 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 37 states have (on average 2.891891891891892) internal successors, (107), 37 states have internal predecessors, (107), 16 states have call successors, (23), 5 states have call predecessors, (23), 8 states have return successors, (22), 13 states have call predecessors, (22), 15 states have call successors, (22) [2022-07-21 09:37:46,244 INFO L276 IsEmpty]: Start isEmpty. Operand 374 states and 467 transitions. [2022-07-21 09:37:46,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-07-21 09:37:46,245 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:37:46,245 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 09:37:46,271 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-07-21 09:37:46,457 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2022-07-21 09:37:46,457 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:37:46,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:37:46,458 INFO L85 PathProgramCache]: Analyzing trace with hash 1566240838, now seen corresponding path program 1 times [2022-07-21 09:37:46,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:37:46,458 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1799923478] [2022-07-21 09:37:46,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:37:46,458 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:37:46,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:37:46,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 09:37:46,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:37:46,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-21 09:37:46,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:37:46,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 09:37:46,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:37:46,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-21 09:37:46,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:37:46,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-07-21 09:37:46,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:37:46,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-21 09:37:46,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:37:47,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-21 09:37:47,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:37:47,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-07-21 09:37:47,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:37:47,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-21 09:37:47,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:37:47,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-07-21 09:37:47,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:37:47,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-07-21 09:37:47,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:37:47,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-07-21 09:37:47,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:37:47,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-07-21 09:37:47,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:37:47,084 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 12 proven. 18 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2022-07-21 09:37:47,084 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:37:47,084 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1799923478] [2022-07-21 09:37:47,084 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1799923478] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 09:37:47,084 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [913307345] [2022-07-21 09:37:47,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:37:47,085 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:37:47,085 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 09:37:47,086 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) [2022-07-21 09:37:47,087 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-07-21 09:37:47,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:37:47,583 INFO L263 TraceCheckSpWp]: Trace formula consists of 2668 conjuncts, 93 conjunts are in the unsatisfiable core [2022-07-21 09:37:47,587 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 09:37:47,725 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 [2022-07-21 09:37:47,727 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 [2022-07-21 09:37:48,111 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 20 treesize of output 8 [2022-07-21 09:37:48,641 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 15 treesize of output 18 [2022-07-21 09:37:48,684 INFO L356 Elim1Store]: treesize reduction 65, result has 39.3 percent of original size [2022-07-21 09:37:48,684 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 4 case distinctions, treesize of input 33 treesize of output 64 [2022-07-21 09:37:48,689 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-07-21 09:37:48,772 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 5 treesize of output 3 [2022-07-21 09:37:48,815 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 [2022-07-21 09:37:48,824 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 [2022-07-21 09:37:48,844 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 24 treesize of output 20 [2022-07-21 09:37:50,073 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-21 09:37:50,074 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 65 treesize of output 49 [2022-07-21 09:37:50,099 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 12 proven. 55 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-07-21 09:37:50,099 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 09:37:50,335 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-21 09:37:50,335 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 1 case distinctions, treesize of input 24 treesize of output 28 [2022-07-21 09:37:50,339 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-21 09:37:50,340 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 1 case distinctions, treesize of input 21 treesize of output 25 [2022-07-21 09:37:50,348 WARN L833 $PredicateComparison]: unable to prove that (and (not (< 9223372036854775807 (mod |c_ULTIMATE.start_aws_byte_cursor_advance_harness_~len~2#1| 18446744073709551616))) (forall ((|ULTIMATE.start_aws_byte_cursor_advance_~#rv~6#1.base| Int) (v_arrayElimArr_13 (Array Int Int)) (|ULTIMATE.start_aws_byte_cursor_advance_~cursor#1.base| Int) (v_arrayElimArr_14 (Array Int Int)) (aux_div_v_ArrVal_2301_40 Int)) (or (not (= (select v_arrayElimArr_13 |c_ULTIMATE.start_aws_byte_cursor_advance_~#rv~6#1.offset|) |c_ULTIMATE.start_aws_byte_cursor_advance_~len#1|)) (not (< 9223372036854775807 (mod (select (select (store (store |c_#memory_int| |ULTIMATE.start_aws_byte_cursor_advance_~#rv~6#1.base| v_arrayElimArr_13) |ULTIMATE.start_aws_byte_cursor_advance_~cursor#1.base| v_arrayElimArr_14) |c_ULTIMATE.start_aws_byte_cursor_advance_harness_~#old~0#1.base|) |c_ULTIMATE.start_aws_byte_cursor_advance_harness_~#old~0#1.offset|) 18446744073709551616))) (not (= (* 18446744073709551616 aux_div_v_ArrVal_2301_40) (select v_arrayElimArr_14 |c_ULTIMATE.start_aws_byte_cursor_advance_~cursor#1.offset|)))))) is different from false [2022-07-21 09:37:50,364 WARN L833 $PredicateComparison]: unable to prove that (or (and (not (< 9223372036854775807 (mod |c_ULTIMATE.start_aws_byte_cursor_advance_harness_~len~2#1| 18446744073709551616))) (forall ((|ULTIMATE.start_aws_byte_cursor_advance_~#rv~6#1.base| Int) (v_arrayElimArr_13 (Array Int Int)) (|ULTIMATE.start_aws_byte_cursor_advance_~cursor#1.base| Int) (v_arrayElimArr_14 (Array Int Int)) (aux_div_v_ArrVal_2301_40 Int)) (or (not (= (select v_arrayElimArr_13 |c_ULTIMATE.start_aws_byte_cursor_advance_~#rv~6#1.offset|) |c_ULTIMATE.start_aws_byte_cursor_advance_~len#1|)) (not (< 9223372036854775807 (mod (select (select (store (store |c_#memory_int| |ULTIMATE.start_aws_byte_cursor_advance_~#rv~6#1.base| v_arrayElimArr_13) |ULTIMATE.start_aws_byte_cursor_advance_~cursor#1.base| v_arrayElimArr_14) |c_ULTIMATE.start_aws_byte_cursor_advance_harness_~#old~0#1.base|) |c_ULTIMATE.start_aws_byte_cursor_advance_harness_~#old~0#1.offset|) 18446744073709551616))) (not (= (* 18446744073709551616 aux_div_v_ArrVal_2301_40) (select v_arrayElimArr_14 |c_ULTIMATE.start_aws_byte_cursor_advance_~cursor#1.offset|)))))) |c_ULTIMATE.start_aws_byte_cursor_advance_#t~short1082#1|) is different from false [2022-07-21 09:37:50,455 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [913307345] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 09:37:50,455 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-21 09:37:50,455 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 26] total 38 [2022-07-21 09:37:50,455 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [925751840] [2022-07-21 09:37:50,455 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-21 09:37:50,456 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-07-21 09:37:50,456 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:37:50,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-07-21 09:37:50,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=149, Invalid=1579, Unknown=2, NotChecked=162, Total=1892 [2022-07-21 09:37:50,457 INFO L87 Difference]: Start difference. First operand 374 states and 467 transitions. Second operand has 38 states, 36 states have (on average 2.5277777777777777) internal successors, (91), 33 states have internal predecessors, (91), 13 states have call successors, (27), 7 states have call predecessors, (27), 8 states have return successors, (26), 10 states have call predecessors, (26), 12 states have call successors, (26) [2022-07-21 09:37:55,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:37:55,765 INFO L93 Difference]: Finished difference Result 490 states and 591 transitions. [2022-07-21 09:37:55,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-07-21 09:37:55,766 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 36 states have (on average 2.5277777777777777) internal successors, (91), 33 states have internal predecessors, (91), 13 states have call successors, (27), 7 states have call predecessors, (27), 8 states have return successors, (26), 10 states have call predecessors, (26), 12 states have call successors, (26) Word has length 101 [2022-07-21 09:37:55,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:37:55,768 INFO L225 Difference]: With dead ends: 490 [2022-07-21 09:37:55,768 INFO L226 Difference]: Without dead ends: 474 [2022-07-21 09:37:55,769 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 246 GetRequests, 143 SyntacticMatches, 20 SemanticMatches, 83 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 2152 ImplicationChecksByTransitivity, 5.5s TimeCoverageRelationStatistics Valid=548, Invalid=6263, Unknown=3, NotChecked=326, Total=7140 [2022-07-21 09:37:55,770 INFO L413 NwaCegarLoop]: 109 mSDtfsCounter, 171 mSDsluCounter, 670 mSDsCounter, 0 mSdLazyCounter, 2321 mSolverCounterSat, 225 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 188 SdHoareTripleChecker+Valid, 779 SdHoareTripleChecker+Invalid, 3441 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 225 IncrementalHoareTripleChecker+Valid, 2321 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 895 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-07-21 09:37:55,770 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [188 Valid, 779 Invalid, 3441 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [225 Valid, 2321 Invalid, 0 Unknown, 895 Unchecked, 1.7s Time] [2022-07-21 09:37:55,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 474 states. [2022-07-21 09:37:55,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 474 to 446. [2022-07-21 09:37:55,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 446 states, 293 states have (on average 1.0887372013651877) internal successors, (319), 300 states have internal predecessors, (319), 107 states have call successors, (107), 45 states have call predecessors, (107), 45 states have return successors, (111), 100 states have call predecessors, (111), 101 states have call successors, (111) [2022-07-21 09:37:55,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 446 states to 446 states and 537 transitions. [2022-07-21 09:37:55,895 INFO L78 Accepts]: Start accepts. Automaton has 446 states and 537 transitions. Word has length 101 [2022-07-21 09:37:55,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:37:55,895 INFO L495 AbstractCegarLoop]: Abstraction has 446 states and 537 transitions. [2022-07-21 09:37:55,895 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 36 states have (on average 2.5277777777777777) internal successors, (91), 33 states have internal predecessors, (91), 13 states have call successors, (27), 7 states have call predecessors, (27), 8 states have return successors, (26), 10 states have call predecessors, (26), 12 states have call successors, (26) [2022-07-21 09:37:55,895 INFO L276 IsEmpty]: Start isEmpty. Operand 446 states and 537 transitions. [2022-07-21 09:37:55,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-07-21 09:37:55,897 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:37:55,897 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 09:37:55,932 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-07-21 09:37:56,123 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:37:56,123 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:37:56,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:37:56,124 INFO L85 PathProgramCache]: Analyzing trace with hash 1636607180, now seen corresponding path program 1 times [2022-07-21 09:37:56,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:37:56,124 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1542039479] [2022-07-21 09:37:56,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:37:56,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:37:56,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:37:56,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 09:37:56,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:37:56,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-21 09:37:56,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:37:56,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 09:37:56,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:37:56,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-21 09:37:56,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:37:56,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-07-21 09:37:56,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:37:56,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-21 09:37:56,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:37:56,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-21 09:37:56,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:37:56,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-07-21 09:37:56,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:37:56,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-21 09:37:56,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:37:56,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-07-21 09:37:56,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:37:56,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-07-21 09:37:56,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:37:56,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-07-21 09:37:56,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:37:56,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-07-21 09:37:56,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:37:56,866 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2022-07-21 09:37:56,867 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:37:56,867 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1542039479] [2022-07-21 09:37:56,867 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1542039479] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:37:56,867 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:37:56,867 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-07-21 09:37:56,867 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [147682999] [2022-07-21 09:37:56,867 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:37:56,867 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-07-21 09:37:56,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:37:56,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-07-21 09:37:56,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=237, Unknown=0, NotChecked=0, Total=272 [2022-07-21 09:37:56,868 INFO L87 Difference]: Start difference. First operand 446 states and 537 transitions. Second operand has 17 states, 15 states have (on average 2.533333333333333) internal successors, (38), 15 states have internal predecessors, (38), 8 states have call successors, (14), 3 states have call predecessors, (14), 2 states have return successors, (13), 6 states have call predecessors, (13), 7 states have call successors, (13) [2022-07-21 09:37:57,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:37:57,968 INFO L93 Difference]: Finished difference Result 463 states and 556 transitions. [2022-07-21 09:37:57,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-21 09:37:57,969 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 15 states have (on average 2.533333333333333) internal successors, (38), 15 states have internal predecessors, (38), 8 states have call successors, (14), 3 states have call predecessors, (14), 2 states have return successors, (13), 6 states have call predecessors, (13), 7 states have call successors, (13) Word has length 101 [2022-07-21 09:37:57,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:37:57,971 INFO L225 Difference]: With dead ends: 463 [2022-07-21 09:37:57,971 INFO L226 Difference]: Without dead ends: 461 [2022-07-21 09:37:57,971 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=84, Invalid=516, Unknown=0, NotChecked=0, Total=600 [2022-07-21 09:37:57,972 INFO L413 NwaCegarLoop]: 81 mSDtfsCounter, 97 mSDsluCounter, 258 mSDsCounter, 0 mSdLazyCounter, 1098 mSolverCounterSat, 116 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 339 SdHoareTripleChecker+Invalid, 1214 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 116 IncrementalHoareTripleChecker+Valid, 1098 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-21 09:37:57,972 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [107 Valid, 339 Invalid, 1214 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [116 Valid, 1098 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-21 09:37:57,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 461 states. [2022-07-21 09:37:58,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 461 to 454. [2022-07-21 09:37:58,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 454 states, 299 states have (on average 1.0869565217391304) internal successors, (325), 306 states have internal predecessors, (325), 108 states have call successors, (108), 46 states have call predecessors, (108), 46 states have return successors, (112), 101 states have call predecessors, (112), 102 states have call successors, (112) [2022-07-21 09:37:58,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 454 states to 454 states and 545 transitions. [2022-07-21 09:37:58,072 INFO L78 Accepts]: Start accepts. Automaton has 454 states and 545 transitions. Word has length 101 [2022-07-21 09:37:58,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:37:58,073 INFO L495 AbstractCegarLoop]: Abstraction has 454 states and 545 transitions. [2022-07-21 09:37:58,073 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 15 states have (on average 2.533333333333333) internal successors, (38), 15 states have internal predecessors, (38), 8 states have call successors, (14), 3 states have call predecessors, (14), 2 states have return successors, (13), 6 states have call predecessors, (13), 7 states have call successors, (13) [2022-07-21 09:37:58,073 INFO L276 IsEmpty]: Start isEmpty. Operand 454 states and 545 transitions. [2022-07-21 09:37:58,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-07-21 09:37:58,075 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:37:58,075 INFO L195 NwaCegarLoop]: trace histogram [6, 5, 5, 5, 5, 5, 5, 5, 5, 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] [2022-07-21 09:37:58,075 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2022-07-21 09:37:58,075 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:37:58,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:37:58,075 INFO L85 PathProgramCache]: Analyzing trace with hash -326672390, now seen corresponding path program 1 times [2022-07-21 09:37:58,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:37:58,075 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1343236380] [2022-07-21 09:37:58,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:37:58,076 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:37:58,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:38:00,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 09:38:00,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:38:00,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-21 09:38:00,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:38:00,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 09:38:00,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:38:00,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-21 09:38:00,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:38:00,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-21 09:38:00,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:38:00,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-21 09:38:00,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:38:00,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-21 09:38:00,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:38:00,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-07-21 09:38:00,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:38:00,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-21 09:38:00,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:38:00,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-07-21 09:38:00,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:38:00,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-21 09:38:00,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:38:00,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-07-21 09:38:00,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:38:00,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-07-21 09:38:00,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:38:00,375 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 18 proven. 28 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2022-07-21 09:38:00,375 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:38:00,375 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1343236380] [2022-07-21 09:38:00,375 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1343236380] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 09:38:00,376 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [420036716] [2022-07-21 09:38:00,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:38:00,376 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:38:00,376 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 09:38:00,377 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) [2022-07-21 09:38:00,378 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-07-21 09:38:00,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:38:00,867 INFO L263 TraceCheckSpWp]: Trace formula consists of 2666 conjuncts, 115 conjunts are in the unsatisfiable core [2022-07-21 09:38:00,874 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 09:38:00,913 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 [2022-07-21 09:38:00,917 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 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 [2022-07-21 09:38:00,919 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 [2022-07-21 09:38:01,785 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 27 [2022-07-21 09:38:01,858 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-21 09:38:01,859 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 09:38:01,861 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-21 09:38:01,861 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 09:38:01,862 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 09:38:01,863 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-21 09:38:01,878 INFO L356 Elim1Store]: treesize reduction 34, result has 38.2 percent of original size [2022-07-21 09:38:01,879 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 2 case distinctions, treesize of input 64 treesize of output 41 [2022-07-21 09:38:01,887 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-21 09:38:01,888 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 09:38:01,891 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 09:38:01,892 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 09:38:01,894 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-21 09:38:01,895 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-21 09:38:01,911 INFO L356 Elim1Store]: treesize reduction 30, result has 41.2 percent of original size [2022-07-21 09:38:01,911 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 2 case distinctions, treesize of input 60 treesize of output 37 [2022-07-21 09:38:02,854 INFO L356 Elim1Store]: treesize reduction 80, result has 1.2 percent of original size [2022-07-21 09:38:02,855 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 56 treesize of output 16 [2022-07-21 09:38:02,863 INFO L356 Elim1Store]: treesize reduction 80, result has 1.2 percent of original size [2022-07-21 09:38:02,864 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 60 treesize of output 20 [2022-07-21 09:38:03,013 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 19 proven. 52 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2022-07-21 09:38:03,014 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 09:38:04,160 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [420036716] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 09:38:04,160 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-21 09:38:04,160 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 28] total 49 [2022-07-21 09:38:04,161 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1625593604] [2022-07-21 09:38:04,161 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-21 09:38:04,161 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2022-07-21 09:38:04,161 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:38:04,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2022-07-21 09:38:04,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=189, Invalid=3003, Unknown=0, NotChecked=0, Total=3192 [2022-07-21 09:38:04,162 INFO L87 Difference]: Start difference. First operand 454 states and 545 transitions. Second operand has 49 states, 42 states have (on average 2.0) internal successors, (84), 46 states have internal predecessors, (84), 20 states have call successors, (28), 3 states have call predecessors, (28), 7 states have return successors, (26), 13 states have call predecessors, (26), 18 states have call successors, (26) [2022-07-21 09:38:09,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:38:09,219 INFO L93 Difference]: Finished difference Result 516 states and 632 transitions. [2022-07-21 09:38:09,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-07-21 09:38:09,219 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 42 states have (on average 2.0) internal successors, (84), 46 states have internal predecessors, (84), 20 states have call successors, (28), 3 states have call predecessors, (28), 7 states have return successors, (26), 13 states have call predecessors, (26), 18 states have call successors, (26) Word has length 102 [2022-07-21 09:38:09,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:38:09,222 INFO L225 Difference]: With dead ends: 516 [2022-07-21 09:38:09,222 INFO L226 Difference]: Without dead ends: 514 [2022-07-21 09:38:09,223 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 104 SyntacticMatches, 17 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1792 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=473, Invalid=6667, Unknown=0, NotChecked=0, Total=7140 [2022-07-21 09:38:09,224 INFO L413 NwaCegarLoop]: 84 mSDtfsCounter, 107 mSDsluCounter, 1942 mSDsCounter, 0 mSdLazyCounter, 2955 mSolverCounterSat, 129 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 138 SdHoareTripleChecker+Valid, 2026 SdHoareTripleChecker+Invalid, 4197 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 129 IncrementalHoareTripleChecker+Valid, 2955 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1113 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-07-21 09:38:09,224 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [138 Valid, 2026 Invalid, 4197 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [129 Valid, 2955 Invalid, 0 Unknown, 1113 Unchecked, 2.8s Time] [2022-07-21 09:38:09,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 514 states. [2022-07-21 09:38:09,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 514 to 479. [2022-07-21 09:38:09,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 479 states, 314 states have (on average 1.0828025477707006) internal successors, (340), 321 states have internal predecessors, (340), 116 states have call successors, (116), 48 states have call predecessors, (116), 48 states have return successors, (120), 109 states have call predecessors, (120), 110 states have call successors, (120) [2022-07-21 09:38:09,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 479 states to 479 states and 576 transitions. [2022-07-21 09:38:09,321 INFO L78 Accepts]: Start accepts. Automaton has 479 states and 576 transitions. Word has length 102 [2022-07-21 09:38:09,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:38:09,322 INFO L495 AbstractCegarLoop]: Abstraction has 479 states and 576 transitions. [2022-07-21 09:38:09,322 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 42 states have (on average 2.0) internal successors, (84), 46 states have internal predecessors, (84), 20 states have call successors, (28), 3 states have call predecessors, (28), 7 states have return successors, (26), 13 states have call predecessors, (26), 18 states have call successors, (26) [2022-07-21 09:38:09,322 INFO L276 IsEmpty]: Start isEmpty. Operand 479 states and 576 transitions. [2022-07-21 09:38:09,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-07-21 09:38:09,323 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:38:09,323 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 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] [2022-07-21 09:38:09,346 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2022-07-21 09:38:09,524 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2022-07-21 09:38:09,524 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:38:09,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:38:09,524 INFO L85 PathProgramCache]: Analyzing trace with hash 1201612672, now seen corresponding path program 2 times [2022-07-21 09:38:09,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:38:09,525 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1395495378] [2022-07-21 09:38:09,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:38:09,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:38:09,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:38:10,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 09:38:10,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:38:10,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-21 09:38:10,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:38:10,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 09:38:10,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:38:10,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-21 09:38:10,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:38:10,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-21 09:38:10,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:38:10,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-21 09:38:10,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:38:10,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-21 09:38:10,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:38:10,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-21 09:38:10,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:38:10,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-21 09:38:10,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:38:10,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-07-21 09:38:10,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:38:10,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-07-21 09:38:10,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:38:10,312 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2022-07-21 09:38:10,312 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:38:10,312 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1395495378] [2022-07-21 09:38:10,312 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1395495378] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:38:10,312 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:38:10,312 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-07-21 09:38:10,313 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [493839893] [2022-07-21 09:38:10,313 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:38:10,313 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-07-21 09:38:10,313 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:38:10,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-07-21 09:38:10,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=333, Unknown=0, NotChecked=0, Total=380 [2022-07-21 09:38:10,314 INFO L87 Difference]: Start difference. First operand 479 states and 576 transitions. Second operand has 20 states, 19 states have (on average 2.736842105263158) internal successors, (52), 18 states have internal predecessors, (52), 8 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 8 states have call predecessors, (11), 7 states have call successors, (11) [2022-07-21 09:38:11,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:38:11,977 INFO L93 Difference]: Finished difference Result 558 states and 673 transitions. [2022-07-21 09:38:11,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-07-21 09:38:11,977 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 2.736842105263158) internal successors, (52), 18 states have internal predecessors, (52), 8 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 8 states have call predecessors, (11), 7 states have call successors, (11) Word has length 101 [2022-07-21 09:38:11,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:38:11,979 INFO L225 Difference]: With dead ends: 558 [2022-07-21 09:38:11,979 INFO L226 Difference]: Without dead ends: 500 [2022-07-21 09:38:11,980 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 160 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=161, Invalid=895, Unknown=0, NotChecked=0, Total=1056 [2022-07-21 09:38:11,980 INFO L413 NwaCegarLoop]: 107 mSDtfsCounter, 132 mSDsluCounter, 455 mSDsCounter, 0 mSdLazyCounter, 1550 mSolverCounterSat, 139 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 562 SdHoareTripleChecker+Invalid, 1689 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 139 IncrementalHoareTripleChecker+Valid, 1550 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-07-21 09:38:11,980 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [144 Valid, 562 Invalid, 1689 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [139 Valid, 1550 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-07-21 09:38:11,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 500 states. [2022-07-21 09:38:12,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 500 to 479. [2022-07-21 09:38:12,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 479 states, 314 states have (on average 1.0828025477707006) internal successors, (340), 321 states have internal predecessors, (340), 116 states have call successors, (116), 48 states have call predecessors, (116), 48 states have return successors, (119), 109 states have call predecessors, (119), 110 states have call successors, (119) [2022-07-21 09:38:12,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 479 states to 479 states and 575 transitions. [2022-07-21 09:38:12,087 INFO L78 Accepts]: Start accepts. Automaton has 479 states and 575 transitions. Word has length 101 [2022-07-21 09:38:12,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:38:12,088 INFO L495 AbstractCegarLoop]: Abstraction has 479 states and 575 transitions. [2022-07-21 09:38:12,088 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 2.736842105263158) internal successors, (52), 18 states have internal predecessors, (52), 8 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 8 states have call predecessors, (11), 7 states have call successors, (11) [2022-07-21 09:38:12,088 INFO L276 IsEmpty]: Start isEmpty. Operand 479 states and 575 transitions. [2022-07-21 09:38:12,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2022-07-21 09:38:12,089 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:38:12,089 INFO L195 NwaCegarLoop]: trace histogram [6, 5, 5, 5, 5, 5, 5, 5, 5, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 09:38:12,089 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2022-07-21 09:38:12,089 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:38:12,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:38:12,090 INFO L85 PathProgramCache]: Analyzing trace with hash -808905162, now seen corresponding path program 1 times [2022-07-21 09:38:12,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:38:12,090 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1611234076] [2022-07-21 09:38:12,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:38:12,090 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:38:12,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:38:12,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 09:38:12,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:38:12,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-21 09:38:12,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:38:12,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 09:38:12,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:38:12,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-21 09:38:12,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:38:12,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-21 09:38:12,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:38:12,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-21 09:38:12,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:38:12,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-21 09:38:12,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:38:12,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-07-21 09:38:12,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:38:12,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-21 09:38:12,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:38:12,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-07-21 09:38:12,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:38:12,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-21 09:38:12,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:38:12,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-07-21 09:38:12,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:38:12,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-07-21 09:38:12,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:38:12,477 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2022-07-21 09:38:12,477 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:38:12,477 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1611234076] [2022-07-21 09:38:12,477 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1611234076] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:38:12,477 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:38:12,477 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-21 09:38:12,478 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1762045507] [2022-07-21 09:38:12,478 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:38:12,478 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-21 09:38:12,478 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:38:12,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-21 09:38:12,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-07-21 09:38:12,478 INFO L87 Difference]: Start difference. First operand 479 states and 575 transitions. Second operand has 11 states, 10 states have (on average 3.9) internal successors, (39), 10 states have internal predecessors, (39), 6 states have call successors, (15), 3 states have call predecessors, (15), 1 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2022-07-21 09:38:12,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:38:12,932 INFO L93 Difference]: Finished difference Result 485 states and 580 transitions. [2022-07-21 09:38:12,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-21 09:38:12,932 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 3.9) internal successors, (39), 10 states have internal predecessors, (39), 6 states have call successors, (15), 3 states have call predecessors, (15), 1 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) Word has length 106 [2022-07-21 09:38:12,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:38:12,934 INFO L225 Difference]: With dead ends: 485 [2022-07-21 09:38:12,934 INFO L226 Difference]: Without dead ends: 434 [2022-07-21 09:38:12,934 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=53, Invalid=187, Unknown=0, NotChecked=0, Total=240 [2022-07-21 09:38:12,935 INFO L413 NwaCegarLoop]: 122 mSDtfsCounter, 52 mSDsluCounter, 658 mSDsCounter, 0 mSdLazyCounter, 246 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 780 SdHoareTripleChecker+Invalid, 294 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 246 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-21 09:38:12,935 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 780 Invalid, 294 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 246 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-21 09:38:12,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 434 states. [2022-07-21 09:38:13,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 434 to 434. [2022-07-21 09:38:13,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 434 states, 288 states have (on average 1.0763888888888888) internal successors, (310), 294 states have internal predecessors, (310), 100 states have call successors, (100), 44 states have call predecessors, (100), 45 states have return successors, (105), 95 states have call predecessors, (105), 96 states have call successors, (105) [2022-07-21 09:38:13,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 434 states to 434 states and 515 transitions. [2022-07-21 09:38:13,014 INFO L78 Accepts]: Start accepts. Automaton has 434 states and 515 transitions. Word has length 106 [2022-07-21 09:38:13,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:38:13,015 INFO L495 AbstractCegarLoop]: Abstraction has 434 states and 515 transitions. [2022-07-21 09:38:13,015 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 3.9) internal successors, (39), 10 states have internal predecessors, (39), 6 states have call successors, (15), 3 states have call predecessors, (15), 1 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2022-07-21 09:38:13,015 INFO L276 IsEmpty]: Start isEmpty. Operand 434 states and 515 transitions. [2022-07-21 09:38:13,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-07-21 09:38:13,016 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:38:13,017 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 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] [2022-07-21 09:38:13,017 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2022-07-21 09:38:13,017 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:38:13,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:38:13,017 INFO L85 PathProgramCache]: Analyzing trace with hash -1821091513, now seen corresponding path program 1 times [2022-07-21 09:38:13,018 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:38:13,018 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1042756065] [2022-07-21 09:38:13,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:38:13,018 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:38:13,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:38:13,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 09:38:13,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:38:13,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-21 09:38:13,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:38:13,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 09:38:13,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:38:13,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-21 09:38:13,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:38:13,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-21 09:38:13,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:38:13,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-21 09:38:13,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:38:13,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-21 09:38:13,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:38:13,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-21 09:38:13,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:38:13,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-21 09:38:13,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:38:13,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-07-21 09:38:13,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:38:13,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-07-21 09:38:13,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:38:13,367 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2022-07-21 09:38:13,367 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:38:13,367 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1042756065] [2022-07-21 09:38:13,368 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1042756065] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:38:13,368 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:38:13,368 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-07-21 09:38:13,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2107544392] [2022-07-21 09:38:13,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:38:13,368 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-21 09:38:13,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:38:13,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-21 09:38:13,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2022-07-21 09:38:13,369 INFO L87 Difference]: Start difference. First operand 434 states and 515 transitions. Second operand has 14 states, 13 states have (on average 3.923076923076923) internal successors, (51), 11 states have internal predecessors, (51), 2 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 1 states have call successors, (11) [2022-07-21 09:38:14,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:38:14,003 INFO L93 Difference]: Finished difference Result 440 states and 520 transitions. [2022-07-21 09:38:14,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-21 09:38:14,003 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 3.923076923076923) internal successors, (51), 11 states have internal predecessors, (51), 2 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 1 states have call successors, (11) Word has length 103 [2022-07-21 09:38:14,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:38:14,005 INFO L225 Difference]: With dead ends: 440 [2022-07-21 09:38:14,005 INFO L226 Difference]: Without dead ends: 438 [2022-07-21 09:38:14,006 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=123, Invalid=527, Unknown=0, NotChecked=0, Total=650 [2022-07-21 09:38:14,006 INFO L413 NwaCegarLoop]: 100 mSDtfsCounter, 59 mSDsluCounter, 540 mSDsCounter, 0 mSdLazyCounter, 635 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 640 SdHoareTripleChecker+Invalid, 674 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 635 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-21 09:38:14,006 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 640 Invalid, 674 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 635 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-21 09:38:14,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 438 states. [2022-07-21 09:38:14,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 438 to 438. [2022-07-21 09:38:14,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 438 states, 291 states have (on average 1.0756013745704467) internal successors, (313), 297 states have internal predecessors, (313), 100 states have call successors, (100), 45 states have call predecessors, (100), 46 states have return successors, (105), 95 states have call predecessors, (105), 96 states have call successors, (105) [2022-07-21 09:38:14,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 438 states to 438 states and 518 transitions. [2022-07-21 09:38:14,083 INFO L78 Accepts]: Start accepts. Automaton has 438 states and 518 transitions. Word has length 103 [2022-07-21 09:38:14,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:38:14,084 INFO L495 AbstractCegarLoop]: Abstraction has 438 states and 518 transitions. [2022-07-21 09:38:14,084 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 3.923076923076923) internal successors, (51), 11 states have internal predecessors, (51), 2 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 1 states have call successors, (11) [2022-07-21 09:38:14,084 INFO L276 IsEmpty]: Start isEmpty. Operand 438 states and 518 transitions. [2022-07-21 09:38:14,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2022-07-21 09:38:14,085 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:38:14,085 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 09:38:14,085 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2022-07-21 09:38:14,085 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:38:14,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:38:14,086 INFO L85 PathProgramCache]: Analyzing trace with hash -1257386079, now seen corresponding path program 1 times [2022-07-21 09:38:14,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:38:14,086 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [198485277] [2022-07-21 09:38:14,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:38:14,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:38:14,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:38:14,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 09:38:14,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:38:14,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-21 09:38:14,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:38:14,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 09:38:14,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:38:14,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-21 09:38:14,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:38:14,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-07-21 09:38:14,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:38:14,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-21 09:38:14,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:38:14,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-21 09:38:14,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:38:14,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-07-21 09:38:14,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:38:14,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-21 09:38:14,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:38:14,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-07-21 09:38:14,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:38:14,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-07-21 09:38:14,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:38:14,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-07-21 09:38:14,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:38:14,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-07-21 09:38:14,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:38:14,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-07-21 09:38:14,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:38:14,706 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 26 proven. 18 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2022-07-21 09:38:14,706 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:38:14,706 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [198485277] [2022-07-21 09:38:14,706 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [198485277] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 09:38:14,706 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2060610077] [2022-07-21 09:38:14,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:38:14,706 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:38:14,706 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 09:38:14,707 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) [2022-07-21 09:38:14,708 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-07-21 09:38:15,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:38:15,220 INFO L263 TraceCheckSpWp]: Trace formula consists of 2686 conjuncts, 98 conjunts are in the unsatisfiable core [2022-07-21 09:38:15,225 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 09:38:15,361 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 [2022-07-21 09:38:15,744 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 20 treesize of output 8 [2022-07-21 09:38:16,062 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-21 09:38:16,063 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 39 treesize of output 30 [2022-07-21 09:38:16,137 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 17 [2022-07-21 09:38:16,140 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 9 treesize of output 12 [2022-07-21 09:38:16,152 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-07-21 09:38:16,153 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 14 treesize of output 20 [2022-07-21 09:38:16,158 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 5 treesize of output 3 [2022-07-21 09:38:17,346 INFO L356 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-07-21 09:38:17,346 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 38 treesize of output 18 [2022-07-21 09:38:17,464 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 6 proven. 63 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-07-21 09:38:17,464 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 09:38:17,845 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2060610077] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 09:38:17,845 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-21 09:38:17,845 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 31] total 45 [2022-07-21 09:38:17,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1666601359] [2022-07-21 09:38:17,846 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-21 09:38:17,846 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2022-07-21 09:38:17,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:38:17,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2022-07-21 09:38:17,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=165, Invalid=2285, Unknown=0, NotChecked=0, Total=2450 [2022-07-21 09:38:17,847 INFO L87 Difference]: Start difference. First operand 438 states and 518 transitions. Second operand has 45 states, 40 states have (on average 2.425) internal successors, (97), 39 states have internal predecessors, (97), 16 states have call successors, (30), 6 states have call predecessors, (30), 7 states have return successors, (28), 13 states have call predecessors, (28), 14 states have call successors, (28) [2022-07-21 09:38:22,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:38:22,839 INFO L93 Difference]: Finished difference Result 636 states and 750 transitions. [2022-07-21 09:38:22,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2022-07-21 09:38:22,839 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 40 states have (on average 2.425) internal successors, (97), 39 states have internal predecessors, (97), 16 states have call successors, (30), 6 states have call predecessors, (30), 7 states have return successors, (28), 13 states have call predecessors, (28), 14 states have call successors, (28) Word has length 107 [2022-07-21 09:38:22,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:38:22,841 INFO L225 Difference]: With dead ends: 636 [2022-07-21 09:38:22,841 INFO L226 Difference]: Without dead ends: 597 [2022-07-21 09:38:22,843 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 267 GetRequests, 127 SyntacticMatches, 20 SemanticMatches, 120 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5345 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=1017, Invalid=13745, Unknown=0, NotChecked=0, Total=14762 [2022-07-21 09:38:22,843 INFO L413 NwaCegarLoop]: 136 mSDtfsCounter, 407 mSDsluCounter, 794 mSDsCounter, 0 mSdLazyCounter, 3265 mSolverCounterSat, 337 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 450 SdHoareTripleChecker+Valid, 930 SdHoareTripleChecker+Invalid, 5417 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 337 IncrementalHoareTripleChecker+Valid, 3265 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1815 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-07-21 09:38:22,843 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [450 Valid, 930 Invalid, 5417 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [337 Valid, 3265 Invalid, 0 Unknown, 1815 Unchecked, 2.3s Time] [2022-07-21 09:38:22,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 597 states. [2022-07-21 09:38:22,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 597 to 498. [2022-07-21 09:38:22,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 498 states, 338 states have (on average 1.0621301775147929) internal successors, (359), 346 states have internal predecessors, (359), 104 states have call successors, (104), 54 states have call predecessors, (104), 55 states have return successors, (108), 97 states have call predecessors, (108), 99 states have call successors, (108) [2022-07-21 09:38:22,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 498 states to 498 states and 571 transitions. [2022-07-21 09:38:22,953 INFO L78 Accepts]: Start accepts. Automaton has 498 states and 571 transitions. Word has length 107 [2022-07-21 09:38:22,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:38:22,953 INFO L495 AbstractCegarLoop]: Abstraction has 498 states and 571 transitions. [2022-07-21 09:38:22,953 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 40 states have (on average 2.425) internal successors, (97), 39 states have internal predecessors, (97), 16 states have call successors, (30), 6 states have call predecessors, (30), 7 states have return successors, (28), 13 states have call predecessors, (28), 14 states have call successors, (28) [2022-07-21 09:38:22,954 INFO L276 IsEmpty]: Start isEmpty. Operand 498 states and 571 transitions. [2022-07-21 09:38:22,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2022-07-21 09:38:22,955 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:38:22,955 INFO L195 NwaCegarLoop]: trace histogram [7, 6, 6, 5, 5, 5, 5, 5, 5, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 09:38:22,975 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2022-07-21 09:38:23,155 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:38:23,155 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:38:23,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:38:23,156 INFO L85 PathProgramCache]: Analyzing trace with hash 1379697227, now seen corresponding path program 1 times [2022-07-21 09:38:23,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:38:23,156 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2035297340] [2022-07-21 09:38:23,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:38:23,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:38:23,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:38:23,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 09:38:23,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:38:23,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-21 09:38:23,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:38:23,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 09:38:23,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:38:23,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-21 09:38:23,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:38:23,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-21 09:38:23,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:38:23,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-21 09:38:23,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:38:23,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-21 09:38:23,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:38:23,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-07-21 09:38:23,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:38:23,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-21 09:38:23,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:38:23,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-07-21 09:38:23,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:38:23,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-21 09:38:23,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:38:23,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-07-21 09:38:23,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:38:23,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-07-21 09:38:23,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:38:23,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-21 09:38:23,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:38:23,739 INFO L134 CoverageAnalysis]: Checked inductivity of 146 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 134 trivial. 0 not checked. [2022-07-21 09:38:23,740 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:38:23,740 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2035297340] [2022-07-21 09:38:23,740 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2035297340] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:38:23,740 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:38:23,740 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-07-21 09:38:23,740 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [750780578] [2022-07-21 09:38:23,740 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:38:23,740 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-07-21 09:38:23,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:38:23,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-07-21 09:38:23,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2022-07-21 09:38:23,741 INFO L87 Difference]: Start difference. First operand 498 states and 571 transitions. Second operand has 13 states, 11 states have (on average 3.3636363636363638) internal successors, (37), 12 states have internal predecessors, (37), 6 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (14), 4 states have call predecessors, (14), 5 states have call successors, (14) [2022-07-21 09:38:24,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:38:24,283 INFO L93 Difference]: Finished difference Result 504 states and 576 transitions. [2022-07-21 09:38:24,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-21 09:38:24,284 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 3.3636363636363638) internal successors, (37), 12 states have internal predecessors, (37), 6 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (14), 4 states have call predecessors, (14), 5 states have call successors, (14) Word has length 108 [2022-07-21 09:38:24,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:38:24,285 INFO L225 Difference]: With dead ends: 504 [2022-07-21 09:38:24,285 INFO L226 Difference]: Without dead ends: 407 [2022-07-21 09:38:24,286 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 32 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=69, Invalid=273, Unknown=0, NotChecked=0, Total=342 [2022-07-21 09:38:24,286 INFO L413 NwaCegarLoop]: 100 mSDtfsCounter, 24 mSDsluCounter, 580 mSDsCounter, 0 mSdLazyCounter, 369 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 680 SdHoareTripleChecker+Invalid, 393 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 369 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-21 09:38:24,286 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 680 Invalid, 393 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 369 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-21 09:38:24,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 407 states. [2022-07-21 09:38:24,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 407 to 407. [2022-07-21 09:38:24,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 407 states, 274 states have (on average 1.0693430656934306) internal successors, (293), 281 states have internal predecessors, (293), 90 states have call successors, (90), 42 states have call predecessors, (90), 42 states have return successors, (94), 83 states have call predecessors, (94), 86 states have call successors, (94) [2022-07-21 09:38:24,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 407 states to 407 states and 477 transitions. [2022-07-21 09:38:24,384 INFO L78 Accepts]: Start accepts. Automaton has 407 states and 477 transitions. Word has length 108 [2022-07-21 09:38:24,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:38:24,385 INFO L495 AbstractCegarLoop]: Abstraction has 407 states and 477 transitions. [2022-07-21 09:38:24,385 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 3.3636363636363638) internal successors, (37), 12 states have internal predecessors, (37), 6 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (14), 4 states have call predecessors, (14), 5 states have call successors, (14) [2022-07-21 09:38:24,385 INFO L276 IsEmpty]: Start isEmpty. Operand 407 states and 477 transitions. [2022-07-21 09:38:24,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2022-07-21 09:38:24,386 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:38:24,386 INFO L195 NwaCegarLoop]: trace histogram [6, 5, 5, 5, 5, 5, 5, 5, 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] [2022-07-21 09:38:24,387 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2022-07-21 09:38:24,387 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:38:24,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:38:24,387 INFO L85 PathProgramCache]: Analyzing trace with hash -1880590197, now seen corresponding path program 1 times [2022-07-21 09:38:24,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:38:24,387 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [238711946] [2022-07-21 09:38:24,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:38:24,388 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:38:24,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:38:24,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 09:38:24,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:38:24,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-21 09:38:24,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:38:25,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-21 09:38:25,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:38:25,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-07-21 09:38:25,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:38:25,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-21 09:38:25,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:38:25,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-21 09:38:25,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:38:25,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-07-21 09:38:25,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:38:25,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-07-21 09:38:25,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:38:25,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-21 09:38:25,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:38:25,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-21 09:38:25,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:38:25,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-21 09:38:25,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:38:25,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-07-21 09:38:25,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:38:25,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-21 09:38:25,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:38:25,077 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 10 proven. 24 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2022-07-21 09:38:25,078 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:38:25,078 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [238711946] [2022-07-21 09:38:25,078 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [238711946] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 09:38:25,078 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [666819956] [2022-07-21 09:38:25,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:38:25,079 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:38:25,079 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 09:38:25,080 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) [2022-07-21 09:38:25,081 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-07-21 09:38:25,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:38:25,571 INFO L263 TraceCheckSpWp]: Trace formula consists of 2688 conjuncts, 41 conjunts are in the unsatisfiable core [2022-07-21 09:38:25,574 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 09:38:25,620 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 [2022-07-21 09:38:25,623 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 [2022-07-21 09:38:25,943 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2022-07-21 09:38:25,944 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 09:38:25,944 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [666819956] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:38:25,944 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 09:38:25,944 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [10] total 19 [2022-07-21 09:38:25,944 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2083166099] [2022-07-21 09:38:25,944 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:38:25,945 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-21 09:38:25,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:38:25,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-21 09:38:25,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=276, Unknown=0, NotChecked=0, Total=342 [2022-07-21 09:38:25,947 INFO L87 Difference]: Start difference. First operand 407 states and 477 transitions. Second operand has 11 states, 11 states have (on average 4.2727272727272725) internal successors, (47), 10 states have internal predecessors, (47), 3 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2022-07-21 09:38:26,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:38:26,151 INFO L93 Difference]: Finished difference Result 419 states and 487 transitions. [2022-07-21 09:38:26,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-21 09:38:26,152 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.2727272727272725) internal successors, (47), 10 states have internal predecessors, (47), 3 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) Word has length 108 [2022-07-21 09:38:26,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:38:26,153 INFO L225 Difference]: With dead ends: 419 [2022-07-21 09:38:26,153 INFO L226 Difference]: Without dead ends: 321 [2022-07-21 09:38:26,154 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=78, Invalid=342, Unknown=0, NotChecked=0, Total=420 [2022-07-21 09:38:26,154 INFO L413 NwaCegarLoop]: 89 mSDtfsCounter, 37 mSDsluCounter, 319 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 408 SdHoareTripleChecker+Invalid, 123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 49 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 09:38:26,154 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 408 Invalid, 123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 68 Invalid, 0 Unknown, 49 Unchecked, 0.1s Time] [2022-07-21 09:38:26,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 321 states. [2022-07-21 09:38:26,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 321 to 321. [2022-07-21 09:38:26,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 321 states, 211 states have (on average 1.080568720379147) internal successors, (228), 218 states have internal predecessors, (228), 77 states have call successors, (77), 31 states have call predecessors, (77), 32 states have return successors, (82), 71 states have call predecessors, (82), 74 states have call successors, (82) [2022-07-21 09:38:26,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 321 states to 321 states and 387 transitions. [2022-07-21 09:38:26,222 INFO L78 Accepts]: Start accepts. Automaton has 321 states and 387 transitions. Word has length 108 [2022-07-21 09:38:26,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:38:26,223 INFO L495 AbstractCegarLoop]: Abstraction has 321 states and 387 transitions. [2022-07-21 09:38:26,223 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.2727272727272725) internal successors, (47), 10 states have internal predecessors, (47), 3 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2022-07-21 09:38:26,223 INFO L276 IsEmpty]: Start isEmpty. Operand 321 states and 387 transitions. [2022-07-21 09:38:26,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2022-07-21 09:38:26,224 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:38:26,224 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 09:38:26,247 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2022-07-21 09:38:26,425 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable43 [2022-07-21 09:38:26,425 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:38:26,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:38:26,425 INFO L85 PathProgramCache]: Analyzing trace with hash -1767868658, now seen corresponding path program 1 times [2022-07-21 09:38:26,425 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:38:26,425 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1210132975] [2022-07-21 09:38:26,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:38:26,426 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:38:26,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:38:26,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 09:38:26,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:38:26,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-21 09:38:26,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:38:26,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 09:38:26,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:38:26,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-21 09:38:26,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:38:26,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-21 09:38:26,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:38:26,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-21 09:38:26,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:38:26,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-21 09:38:26,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:38:26,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-21 09:38:26,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:38:26,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-21 09:38:26,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:38:26,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-21 09:38:26,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:38:26,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-07-21 09:38:26,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:38:26,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-21 09:38:26,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:38:26,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-07-21 09:38:26,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:38:26,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-07-21 09:38:26,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:38:26,830 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 12 proven. 18 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2022-07-21 09:38:26,830 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:38:26,830 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1210132975] [2022-07-21 09:38:26,830 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1210132975] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 09:38:26,830 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [770369803] [2022-07-21 09:38:26,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:38:26,831 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:38:26,831 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 09:38:26,836 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) [2022-07-21 09:38:26,839 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2022-07-21 09:38:27,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:38:27,315 INFO L263 TraceCheckSpWp]: Trace formula consists of 2712 conjuncts, 66 conjunts are in the unsatisfiable core [2022-07-21 09:38:27,319 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 09:38:27,322 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-07-21 09:38:27,399 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 5 treesize of output 3 [2022-07-21 09:38:27,473 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 09:38:27,474 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 12 treesize of output 14 [2022-07-21 09:38:27,802 INFO L356 Elim1Store]: treesize reduction 16, result has 36.0 percent of original size [2022-07-21 09:38:27,802 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 20 treesize of output 22 [2022-07-21 09:38:27,838 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 [2022-07-21 09:38:29,930 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 [2022-07-21 09:38:32,198 INFO L356 Elim1Store]: treesize reduction 19, result has 5.0 percent of original size [2022-07-21 09:38:32,198 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 30 treesize of output 1 [2022-07-21 09:38:32,200 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 62 proven. 11 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2022-07-21 09:38:32,200 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 09:38:32,388 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_3024 (Array Int Int))) (let ((.cse0 (select (select (store |c_#memory_int| |c_ULTIMATE.start_save_byte_from_array_~storage#1.base| v_ArrVal_3024) |c_ULTIMATE.start_aws_byte_cursor_advance_harness_~#cursor~2#1.base|) |c_ULTIMATE.start_aws_byte_cursor_advance_harness_~#cursor~2#1.offset|))) (<= .cse0 (+ 18446744073709551615 (* 18446744073709551616 (div (+ (- 1) .cse0) 18446744073709551616)))))) is different from false [2022-07-21 09:38:32,393 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [770369803] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 09:38:32,393 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-21 09:38:32,393 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 20] total 32 [2022-07-21 09:38:32,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1212015613] [2022-07-21 09:38:32,394 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-21 09:38:32,394 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-07-21 09:38:32,394 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:38:32,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-07-21 09:38:32,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=121, Invalid=1003, Unknown=2, NotChecked=64, Total=1190 [2022-07-21 09:38:32,395 INFO L87 Difference]: Start difference. First operand 321 states and 387 transitions. Second operand has 32 states, 30 states have (on average 3.433333333333333) internal successors, (103), 28 states have internal predecessors, (103), 11 states have call successors, (28), 8 states have call predecessors, (28), 10 states have return successors, (27), 9 states have call predecessors, (27), 11 states have call successors, (27) [2022-07-21 09:38:35,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:38:35,344 INFO L93 Difference]: Finished difference Result 437 states and 514 transitions. [2022-07-21 09:38:35,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-07-21 09:38:35,349 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 30 states have (on average 3.433333333333333) internal successors, (103), 28 states have internal predecessors, (103), 11 states have call successors, (28), 8 states have call predecessors, (28), 10 states have return successors, (27), 9 states have call predecessors, (27), 11 states have call successors, (27) Word has length 114 [2022-07-21 09:38:35,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:38:35,350 INFO L225 Difference]: With dead ends: 437 [2022-07-21 09:38:35,351 INFO L226 Difference]: Without dead ends: 299 [2022-07-21 09:38:35,352 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 249 GetRequests, 193 SyntacticMatches, 6 SemanticMatches, 50 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 728 ImplicationChecksByTransitivity, 7.2s TimeCoverageRelationStatistics Valid=261, Invalid=2290, Unknown=3, NotChecked=98, Total=2652 [2022-07-21 09:38:35,352 INFO L413 NwaCegarLoop]: 90 mSDtfsCounter, 82 mSDsluCounter, 446 mSDsCounter, 0 mSdLazyCounter, 610 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 536 SdHoareTripleChecker+Invalid, 1018 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 610 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 347 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-21 09:38:35,352 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [85 Valid, 536 Invalid, 1018 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 610 Invalid, 0 Unknown, 347 Unchecked, 0.5s Time] [2022-07-21 09:38:35,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299 states. [2022-07-21 09:38:35,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299 to 299. [2022-07-21 09:38:35,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 299 states, 199 states have (on average 1.07035175879397) internal successors, (213), 205 states have internal predecessors, (213), 68 states have call successors, (68), 30 states have call predecessors, (68), 31 states have return successors, (72), 63 states have call predecessors, (72), 65 states have call successors, (72) [2022-07-21 09:38:35,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 299 states to 299 states and 353 transitions. [2022-07-21 09:38:35,424 INFO L78 Accepts]: Start accepts. Automaton has 299 states and 353 transitions. Word has length 114 [2022-07-21 09:38:35,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:38:35,424 INFO L495 AbstractCegarLoop]: Abstraction has 299 states and 353 transitions. [2022-07-21 09:38:35,424 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 30 states have (on average 3.433333333333333) internal successors, (103), 28 states have internal predecessors, (103), 11 states have call successors, (28), 8 states have call predecessors, (28), 10 states have return successors, (27), 9 states have call predecessors, (27), 11 states have call successors, (27) [2022-07-21 09:38:35,424 INFO L276 IsEmpty]: Start isEmpty. Operand 299 states and 353 transitions. [2022-07-21 09:38:35,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2022-07-21 09:38:35,426 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:38:35,426 INFO L195 NwaCegarLoop]: trace histogram [6, 5, 5, 5, 5, 5, 5, 5, 5, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 09:38:35,456 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2022-07-21 09:38:35,651 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable44 [2022-07-21 09:38:35,652 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:38:35,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:38:35,652 INFO L85 PathProgramCache]: Analyzing trace with hash -329161806, now seen corresponding path program 1 times [2022-07-21 09:38:35,652 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:38:35,652 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2105884358] [2022-07-21 09:38:35,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:38:35,652 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:38:35,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:38:36,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 09:38:36,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:38:36,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-21 09:38:36,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:38:36,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 09:38:36,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:38:36,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-21 09:38:36,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:38:36,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-07-21 09:38:36,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:38:36,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-21 09:38:36,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:38:36,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-21 09:38:36,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:38:36,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-07-21 09:38:36,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:38:36,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-21 09:38:36,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:38:36,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-07-21 09:38:36,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:38:36,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-07-21 09:38:36,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:38:36,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-07-21 09:38:36,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:38:36,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-07-21 09:38:36,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:38:36,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-07-21 09:38:36,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:38:36,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-07-21 09:38:36,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:38:36,420 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 122 trivial. 0 not checked. [2022-07-21 09:38:36,420 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:38:36,420 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2105884358] [2022-07-21 09:38:36,420 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2105884358] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:38:36,420 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:38:36,420 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-07-21 09:38:36,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1835399027] [2022-07-21 09:38:36,421 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:38:36,421 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-07-21 09:38:36,421 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:38:36,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-07-21 09:38:36,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=235, Unknown=0, NotChecked=0, Total=272 [2022-07-21 09:38:36,422 INFO L87 Difference]: Start difference. First operand 299 states and 353 transitions. Second operand has 17 states, 16 states have (on average 2.6875) internal successors, (43), 15 states have internal predecessors, (43), 9 states have call successors, (17), 4 states have call predecessors, (17), 1 states have return successors, (15), 7 states have call predecessors, (15), 7 states have call successors, (15) [2022-07-21 09:38:38,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:38:38,228 INFO L93 Difference]: Finished difference Result 329 states and 388 transitions. [2022-07-21 09:38:38,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-07-21 09:38:38,232 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 2.6875) internal successors, (43), 15 states have internal predecessors, (43), 9 states have call successors, (17), 4 states have call predecessors, (17), 1 states have return successors, (15), 7 states have call predecessors, (15), 7 states have call successors, (15) Word has length 117 [2022-07-21 09:38:38,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:38:38,233 INFO L225 Difference]: With dead ends: 329 [2022-07-21 09:38:38,234 INFO L226 Difference]: Without dead ends: 313 [2022-07-21 09:38:38,234 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 130 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=167, Invalid=763, Unknown=0, NotChecked=0, Total=930 [2022-07-21 09:38:38,235 INFO L413 NwaCegarLoop]: 116 mSDtfsCounter, 134 mSDsluCounter, 322 mSDsCounter, 0 mSdLazyCounter, 1102 mSolverCounterSat, 143 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 151 SdHoareTripleChecker+Valid, 438 SdHoareTripleChecker+Invalid, 1245 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 143 IncrementalHoareTripleChecker+Valid, 1102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-21 09:38:38,235 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [151 Valid, 438 Invalid, 1245 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [143 Valid, 1102 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-21 09:38:38,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 313 states. [2022-07-21 09:38:38,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 313 to 299. [2022-07-21 09:38:38,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 299 states, 199 states have (on average 1.065326633165829) internal successors, (212), 205 states have internal predecessors, (212), 68 states have call successors, (68), 30 states have call predecessors, (68), 31 states have return successors, (72), 63 states have call predecessors, (72), 65 states have call successors, (72) [2022-07-21 09:38:38,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 299 states to 299 states and 352 transitions. [2022-07-21 09:38:38,288 INFO L78 Accepts]: Start accepts. Automaton has 299 states and 352 transitions. Word has length 117 [2022-07-21 09:38:38,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:38:38,289 INFO L495 AbstractCegarLoop]: Abstraction has 299 states and 352 transitions. [2022-07-21 09:38:38,289 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 2.6875) internal successors, (43), 15 states have internal predecessors, (43), 9 states have call successors, (17), 4 states have call predecessors, (17), 1 states have return successors, (15), 7 states have call predecessors, (15), 7 states have call successors, (15) [2022-07-21 09:38:38,289 INFO L276 IsEmpty]: Start isEmpty. Operand 299 states and 352 transitions. [2022-07-21 09:38:38,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2022-07-21 09:38:38,290 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:38:38,290 INFO L195 NwaCegarLoop]: trace histogram [6, 5, 5, 5, 5, 5, 5, 5, 5, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 09:38:38,290 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2022-07-21 09:38:38,290 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:38:38,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:38:38,290 INFO L85 PathProgramCache]: Analyzing trace with hash -110307088, now seen corresponding path program 1 times [2022-07-21 09:38:38,290 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:38:38,291 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1971687968] [2022-07-21 09:38:38,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:38:38,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:38:38,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:38:38,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 09:38:38,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:38:38,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-21 09:38:38,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:38:38,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 09:38:38,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:38:38,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-21 09:38:38,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:38:38,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-07-21 09:38:38,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:38:38,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-21 09:38:38,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:38:38,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-21 09:38:38,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:38:38,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-07-21 09:38:38,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:38:38,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-21 09:38:38,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:38:38,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-07-21 09:38:38,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:38:38,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-07-21 09:38:38,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:38:38,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-07-21 09:38:38,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:38:38,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-07-21 09:38:38,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:38:38,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-07-21 09:38:38,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:38:38,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-07-21 09:38:38,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:38:38,812 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 122 trivial. 0 not checked. [2022-07-21 09:38:38,812 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:38:38,812 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1971687968] [2022-07-21 09:38:38,813 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1971687968] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:38:38,813 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:38:38,813 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-07-21 09:38:38,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [696786783] [2022-07-21 09:38:38,813 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:38:38,814 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-21 09:38:38,814 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:38:38,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-21 09:38:38,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2022-07-21 09:38:38,814 INFO L87 Difference]: Start difference. First operand 299 states and 352 transitions. Second operand has 14 states, 13 states have (on average 3.3076923076923075) internal successors, (43), 12 states have internal predecessors, (43), 8 states have call successors, (17), 4 states have call predecessors, (17), 1 states have return successors, (15), 6 states have call predecessors, (15), 6 states have call successors, (15) [2022-07-21 09:38:39,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:38:39,904 INFO L93 Difference]: Finished difference Result 315 states and 369 transitions. [2022-07-21 09:38:39,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-21 09:38:39,904 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 3.3076923076923075) internal successors, (43), 12 states have internal predecessors, (43), 8 states have call successors, (17), 4 states have call predecessors, (17), 1 states have return successors, (15), 6 states have call predecessors, (15), 6 states have call successors, (15) Word has length 117 [2022-07-21 09:38:39,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:38:39,905 INFO L225 Difference]: With dead ends: 315 [2022-07-21 09:38:39,905 INFO L226 Difference]: Without dead ends: 276 [2022-07-21 09:38:39,906 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=99, Invalid=407, Unknown=0, NotChecked=0, Total=506 [2022-07-21 09:38:39,906 INFO L413 NwaCegarLoop]: 90 mSDtfsCounter, 120 mSDsluCounter, 211 mSDsCounter, 0 mSdLazyCounter, 814 mSolverCounterSat, 106 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 137 SdHoareTripleChecker+Valid, 301 SdHoareTripleChecker+Invalid, 920 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 106 IncrementalHoareTripleChecker+Valid, 814 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-21 09:38:39,906 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [137 Valid, 301 Invalid, 920 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [106 Valid, 814 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-21 09:38:39,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 276 states. [2022-07-21 09:38:39,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 276 to 269. [2022-07-21 09:38:39,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 269 states, 185 states have (on average 1.0594594594594595) internal successors, (196), 191 states have internal predecessors, (196), 53 states have call successors, (53), 29 states have call predecessors, (53), 30 states have return successors, (57), 48 states have call predecessors, (57), 50 states have call successors, (57) [2022-07-21 09:38:39,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 269 states to 269 states and 306 transitions. [2022-07-21 09:38:39,947 INFO L78 Accepts]: Start accepts. Automaton has 269 states and 306 transitions. Word has length 117 [2022-07-21 09:38:39,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:38:39,947 INFO L495 AbstractCegarLoop]: Abstraction has 269 states and 306 transitions. [2022-07-21 09:38:39,947 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 3.3076923076923075) internal successors, (43), 12 states have internal predecessors, (43), 8 states have call successors, (17), 4 states have call predecessors, (17), 1 states have return successors, (15), 6 states have call predecessors, (15), 6 states have call successors, (15) [2022-07-21 09:38:39,947 INFO L276 IsEmpty]: Start isEmpty. Operand 269 states and 306 transitions. [2022-07-21 09:38:39,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2022-07-21 09:38:39,948 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:38:39,948 INFO L195 NwaCegarLoop]: trace histogram [7, 6, 6, 5, 5, 5, 5, 5, 5, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 09:38:39,949 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2022-07-21 09:38:39,949 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:38:39,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:38:39,949 INFO L85 PathProgramCache]: Analyzing trace with hash -1577419131, now seen corresponding path program 1 times [2022-07-21 09:38:39,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:38:39,949 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1279201694] [2022-07-21 09:38:39,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:38:39,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:38:40,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:38:40,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 09:38:40,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:38:40,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-21 09:38:40,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:38:40,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 09:38:40,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:38:40,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-21 09:38:40,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:38:40,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-07-21 09:38:40,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:38:40,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-21 09:38:40,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:38:40,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-21 09:38:40,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:38:40,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-07-21 09:38:40,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:38:40,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-21 09:38:40,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:38:40,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-07-21 09:38:40,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:38:40,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-07-21 09:38:40,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:38:40,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-07-21 09:38:40,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:38:40,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-07-21 09:38:40,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:38:40,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-07-21 09:38:40,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:38:40,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-07-21 09:38:40,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:38:40,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-07-21 09:38:40,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:38:40,735 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 142 trivial. 0 not checked. [2022-07-21 09:38:40,736 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:38:40,736 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1279201694] [2022-07-21 09:38:40,736 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1279201694] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:38:40,736 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:38:40,737 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-07-21 09:38:40,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [993232482] [2022-07-21 09:38:40,737 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:38:40,737 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-07-21 09:38:40,737 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:38:40,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-07-21 09:38:40,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2022-07-21 09:38:40,738 INFO L87 Difference]: Start difference. First operand 269 states and 306 transitions. Second operand has 16 states, 14 states have (on average 2.9285714285714284) internal successors, (41), 14 states have internal predecessors, (41), 7 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (16), 5 states have call predecessors, (16), 6 states have call successors, (16) [2022-07-21 09:38:41,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:38:41,702 INFO L93 Difference]: Finished difference Result 277 states and 313 transitions. [2022-07-21 09:38:41,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-21 09:38:41,703 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 14 states have (on average 2.9285714285714284) internal successors, (41), 14 states have internal predecessors, (41), 7 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (16), 5 states have call predecessors, (16), 6 states have call successors, (16) Word has length 119 [2022-07-21 09:38:41,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:38:41,704 INFO L225 Difference]: With dead ends: 277 [2022-07-21 09:38:41,704 INFO L226 Difference]: Without dead ends: 190 [2022-07-21 09:38:41,704 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=84, Invalid=422, Unknown=0, NotChecked=0, Total=506 [2022-07-21 09:38:41,705 INFO L413 NwaCegarLoop]: 76 mSDtfsCounter, 60 mSDsluCounter, 190 mSDsCounter, 0 mSdLazyCounter, 950 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 266 SdHoareTripleChecker+Invalid, 1015 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 950 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-21 09:38:41,705 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 266 Invalid, 1015 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 950 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-21 09:38:41,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2022-07-21 09:38:41,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 190. [2022-07-21 09:38:41,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 190 states, 129 states have (on average 1.0775193798449612) internal successors, (139), 134 states have internal predecessors, (139), 41 states have call successors, (41), 19 states have call predecessors, (41), 19 states have return successors, (44), 36 states have call predecessors, (44), 38 states have call successors, (44) [2022-07-21 09:38:41,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 224 transitions. [2022-07-21 09:38:41,736 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 224 transitions. Word has length 119 [2022-07-21 09:38:41,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:38:41,736 INFO L495 AbstractCegarLoop]: Abstraction has 190 states and 224 transitions. [2022-07-21 09:38:41,736 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 14 states have (on average 2.9285714285714284) internal successors, (41), 14 states have internal predecessors, (41), 7 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (16), 5 states have call predecessors, (16), 6 states have call successors, (16) [2022-07-21 09:38:41,736 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 224 transitions. [2022-07-21 09:38:41,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2022-07-21 09:38:41,737 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:38:41,737 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 3, 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] [2022-07-21 09:38:41,737 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2022-07-21 09:38:41,738 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:38:41,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:38:41,738 INFO L85 PathProgramCache]: Analyzing trace with hash -362342817, now seen corresponding path program 2 times [2022-07-21 09:38:41,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:38:41,738 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1899725764] [2022-07-21 09:38:41,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:38:41,738 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:38:41,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:38:42,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 09:38:42,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:38:42,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-21 09:38:42,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:38:42,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 09:38:42,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:38:42,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-21 09:38:42,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:38:42,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-21 09:38:42,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:38:42,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-21 09:38:42,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:38:42,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-21 09:38:42,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:38:42,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-21 09:38:42,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:38:42,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-21 09:38:42,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:38:42,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-07-21 09:38:42,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:38:42,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-07-21 09:38:42,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:38:42,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-07-21 09:38:42,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:38:42,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-07-21 09:38:42,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:38:42,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-07-21 09:38:42,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:38:42,340 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 24 proven. 29 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2022-07-21 09:38:42,341 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:38:42,341 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1899725764] [2022-07-21 09:38:42,341 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1899725764] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 09:38:42,341 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [733260357] [2022-07-21 09:38:42,341 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-21 09:38:42,341 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:38:42,341 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 09:38:42,342 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) [2022-07-21 09:38:42,343 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2022-07-21 09:38:43,286 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-21 09:38:43,286 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-21 09:38:43,299 INFO L263 TraceCheckSpWp]: Trace formula consists of 2734 conjuncts, 71 conjunts are in the unsatisfiable core [2022-07-21 09:38:43,304 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 09:38:43,309 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-07-21 09:38:43,414 INFO L356 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-07-21 09:38:43,414 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 17 treesize of output 21 [2022-07-21 09:38:43,520 INFO L356 Elim1Store]: treesize reduction 48, result has 23.8 percent of original size [2022-07-21 09:38:43,521 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 3 case distinctions, treesize of input 24 treesize of output 30 [2022-07-21 09:38:43,570 INFO L356 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-07-21 09:38:43,571 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 17 treesize of output 21 [2022-07-21 09:38:45,932 INFO L356 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-07-21 09:38:45,932 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 11 treesize of output 11 [2022-07-21 09:38:45,951 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 26 treesize of output 26 [2022-07-21 09:38:50,336 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 74 proven. 14 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-07-21 09:38:50,337 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 09:38:50,780 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_3267 (Array Int Int))) (let ((.cse0 (select (select (store |c_#memory_int| |c_ULTIMATE.start_aws_byte_cursor_advance_~#rv~6#1.base| v_ArrVal_3267) |c_ULTIMATE.start_aws_byte_cursor_advance_~cursor#1.base|) |c_ULTIMATE.start_aws_byte_cursor_advance_~cursor#1.offset|))) (<= .cse0 (+ 18446744073709551615 (* 18446744073709551616 (div (+ (- 1) .cse0) 18446744073709551616)))))) is different from false [2022-07-21 09:38:50,851 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [733260357] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 09:38:50,851 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-21 09:38:50,851 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 20] total 33 [2022-07-21 09:38:50,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1897470214] [2022-07-21 09:38:50,851 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-21 09:38:50,851 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-07-21 09:38:50,851 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:38:50,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-07-21 09:38:50,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=160, Invalid=1480, Unknown=4, NotChecked=78, Total=1722 [2022-07-21 09:38:50,852 INFO L87 Difference]: Start difference. First operand 190 states and 224 transitions. Second operand has 33 states, 30 states have (on average 4.1) internal successors, (123), 29 states have internal predecessors, (123), 10 states have call successors, (28), 7 states have call predecessors, (28), 10 states have return successors, (27), 7 states have call predecessors, (27), 10 states have call successors, (27) [2022-07-21 09:38:55,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:38:55,899 INFO L93 Difference]: Finished difference Result 345 states and 413 transitions. [2022-07-21 09:38:55,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-07-21 09:38:55,900 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 30 states have (on average 4.1) internal successors, (123), 29 states have internal predecessors, (123), 10 states have call successors, (28), 7 states have call predecessors, (28), 10 states have return successors, (27), 7 states have call predecessors, (27), 10 states have call successors, (27) Word has length 120 [2022-07-21 09:38:55,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:38:55,901 INFO L225 Difference]: With dead ends: 345 [2022-07-21 09:38:55,901 INFO L226 Difference]: Without dead ends: 263 [2022-07-21 09:38:55,902 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 240 GetRequests, 172 SyntacticMatches, 14 SemanticMatches, 54 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 1005 ImplicationChecksByTransitivity, 11.6s TimeCoverageRelationStatistics Valid=287, Invalid=2681, Unknown=6, NotChecked=106, Total=3080 [2022-07-21 09:38:55,902 INFO L413 NwaCegarLoop]: 131 mSDtfsCounter, 199 mSDsluCounter, 680 mSDsCounter, 0 mSdLazyCounter, 887 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 219 SdHoareTripleChecker+Valid, 811 SdHoareTripleChecker+Invalid, 1748 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 887 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 778 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-21 09:38:55,902 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [219 Valid, 811 Invalid, 1748 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 887 Invalid, 0 Unknown, 778 Unchecked, 0.6s Time] [2022-07-21 09:38:55,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 263 states. [2022-07-21 09:38:55,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 263 to 206. [2022-07-21 09:38:55,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 206 states, 144 states have (on average 1.0694444444444444) internal successors, (154), 149 states have internal predecessors, (154), 41 states have call successors, (41), 20 states have call predecessors, (41), 20 states have return successors, (43), 36 states have call predecessors, (43), 38 states have call successors, (43) [2022-07-21 09:38:55,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 238 transitions. [2022-07-21 09:38:55,934 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 238 transitions. Word has length 120 [2022-07-21 09:38:55,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:38:55,934 INFO L495 AbstractCegarLoop]: Abstraction has 206 states and 238 transitions. [2022-07-21 09:38:55,934 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 30 states have (on average 4.1) internal successors, (123), 29 states have internal predecessors, (123), 10 states have call successors, (28), 7 states have call predecessors, (28), 10 states have return successors, (27), 7 states have call predecessors, (27), 10 states have call successors, (27) [2022-07-21 09:38:55,934 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 238 transitions. [2022-07-21 09:38:55,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2022-07-21 09:38:55,935 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:38:55,935 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 3, 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] [2022-07-21 09:38:55,956 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2022-07-21 09:38:56,135 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable48 [2022-07-21 09:38:56,136 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:38:56,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:38:56,136 INFO L85 PathProgramCache]: Analyzing trace with hash -913789417, now seen corresponding path program 1 times [2022-07-21 09:38:56,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:38:56,136 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [185840945] [2022-07-21 09:38:56,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:38:56,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:38:56,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:38:56,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 09:38:56,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:38:56,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-21 09:38:56,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:38:56,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 09:38:56,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:38:56,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-21 09:38:56,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:38:56,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-21 09:38:56,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:38:56,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-21 09:38:56,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:38:56,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-21 09:38:56,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:38:56,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-21 09:38:56,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:38:56,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-21 09:38:56,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:38:56,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-07-21 09:38:56,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:38:56,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-07-21 09:38:56,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:38:56,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-07-21 09:38:56,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:38:56,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-07-21 09:38:56,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:38:56,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-07-21 09:38:56,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:38:56,644 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2022-07-21 09:38:56,644 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:38:56,644 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [185840945] [2022-07-21 09:38:56,644 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [185840945] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:38:56,644 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:38:56,645 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-07-21 09:38:56,645 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1069176735] [2022-07-21 09:38:56,645 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:38:56,645 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-07-21 09:38:56,645 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:38:56,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-07-21 09:38:56,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=176, Unknown=0, NotChecked=0, Total=210 [2022-07-21 09:38:56,646 INFO L87 Difference]: Start difference. First operand 206 states and 238 transitions. Second operand has 15 states, 15 states have (on average 3.1333333333333333) internal successors, (47), 14 states have internal predecessors, (47), 8 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (14), 7 states have call predecessors, (14), 7 states have call successors, (14) [2022-07-21 09:38:57,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:38:57,414 INFO L93 Difference]: Finished difference Result 258 states and 304 transitions. [2022-07-21 09:38:57,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-21 09:38:57,414 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.1333333333333333) internal successors, (47), 14 states have internal predecessors, (47), 8 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (14), 7 states have call predecessors, (14), 7 states have call successors, (14) Word has length 120 [2022-07-21 09:38:57,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:38:57,415 INFO L225 Difference]: With dead ends: 258 [2022-07-21 09:38:57,415 INFO L226 Difference]: Without dead ends: 230 [2022-07-21 09:38:57,415 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 30 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=85, Invalid=335, Unknown=0, NotChecked=0, Total=420 [2022-07-21 09:38:57,416 INFO L413 NwaCegarLoop]: 72 mSDtfsCounter, 78 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 809 mSolverCounterSat, 132 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 168 SdHoareTripleChecker+Invalid, 941 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 132 IncrementalHoareTripleChecker+Valid, 809 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-21 09:38:57,416 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [90 Valid, 168 Invalid, 941 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [132 Valid, 809 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-21 09:38:57,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2022-07-21 09:38:57,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 216. [2022-07-21 09:38:57,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 216 states, 148 states have (on average 1.0608108108108107) internal successors, (157), 153 states have internal predecessors, (157), 47 states have call successors, (47), 20 states have call predecessors, (47), 20 states have return successors, (49), 42 states have call predecessors, (49), 44 states have call successors, (49) [2022-07-21 09:38:57,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 253 transitions. [2022-07-21 09:38:57,452 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 253 transitions. Word has length 120 [2022-07-21 09:38:57,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:38:57,452 INFO L495 AbstractCegarLoop]: Abstraction has 216 states and 253 transitions. [2022-07-21 09:38:57,452 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.1333333333333333) internal successors, (47), 14 states have internal predecessors, (47), 8 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (14), 7 states have call predecessors, (14), 7 states have call successors, (14) [2022-07-21 09:38:57,453 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 253 transitions. [2022-07-21 09:38:57,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2022-07-21 09:38:57,453 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:38:57,454 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 3, 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] [2022-07-21 09:38:57,454 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2022-07-21 09:38:57,454 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:38:57,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:38:57,454 INFO L85 PathProgramCache]: Analyzing trace with hash -843423075, now seen corresponding path program 1 times [2022-07-21 09:38:57,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:38:57,455 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1110202050] [2022-07-21 09:38:57,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:38:57,455 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:38:57,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:38:57,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 09:38:57,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:38:57,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-21 09:38:57,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:38:57,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 09:38:57,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:38:57,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-21 09:38:57,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:38:57,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-21 09:38:57,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:38:57,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-21 09:38:57,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:38:57,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-21 09:38:57,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:38:58,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-21 09:38:58,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:38:58,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-21 09:38:58,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:38:58,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-07-21 09:38:58,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:38:58,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-07-21 09:38:58,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:38:58,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-07-21 09:38:58,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:38:58,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-07-21 09:38:58,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:38:58,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-07-21 09:38:58,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:38:58,108 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 30 proven. 28 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-07-21 09:38:58,108 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:38:58,108 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1110202050] [2022-07-21 09:38:58,108 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1110202050] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 09:38:58,108 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [66973492] [2022-07-21 09:38:58,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:38:58,109 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:38:58,109 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 09:38:58,116 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) [2022-07-21 09:38:58,118 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2022-07-21 09:38:58,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:38:58,635 INFO L263 TraceCheckSpWp]: Trace formula consists of 2764 conjuncts, 116 conjunts are in the unsatisfiable core [2022-07-21 09:38:58,644 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 09:38:58,648 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-07-21 09:38:58,758 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 5 treesize of output 3 [2022-07-21 09:38:58,812 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 09:38:58,813 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 12 treesize of output 14 [2022-07-21 09:38:58,873 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 [2022-07-21 09:38:58,876 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 [2022-07-21 09:39:01,461 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 09:39:01,498 INFO L356 Elim1Store]: treesize reduction 98, result has 24.6 percent of original size [2022-07-21 09:39:01,498 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 34 treesize of output 53 [2022-07-21 09:39:01,606 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 27 [2022-07-21 09:39:01,617 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 27 [2022-07-21 09:39:05,151 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 27 [2022-07-21 09:39:05,156 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 27 [2022-07-21 09:39:05,232 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 09:39:05,248 INFO L356 Elim1Store]: treesize reduction 42, result has 27.6 percent of original size [2022-07-21 09:39:05,249 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 22 treesize of output 30 [2022-07-21 09:39:12,697 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 09:39:12,714 INFO L356 Elim1Store]: treesize reduction 40, result has 29.8 percent of original size [2022-07-21 09:39:12,714 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 7 case distinctions, treesize of input 26 treesize of output 32 [2022-07-21 09:39:12,782 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-21 09:39:12,783 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 09:39:12,783 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 44 [2022-07-21 09:39:12,789 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-21 09:39:12,789 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 09:39:12,790 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 44 [2022-07-21 09:39:12,794 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 38 [2022-07-21 09:39:12,798 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 [2022-07-21 09:39:12,802 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 38 [2022-07-21 09:39:12,807 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 [2022-07-21 09:39:14,858 WARN L855 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_aws_byte_cursor_advance_~#rv~6#1.base_BEFORE_CALL_24| Int) (|v_ULTIMATE.start_aws_byte_cursor_advance_harness_~#old~0#1.base_BEFORE_CALL_22| Int)) (and (= (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_aws_byte_cursor_advance_harness_~#old~0#1.base_BEFORE_CALL_22|) 8) (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_aws_byte_cursor_advance_~#rv~6#1.base_BEFORE_CALL_24|) 8)) (= (select (select |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_aws_byte_cursor_advance_~#rv~6#1.base_BEFORE_CALL_24|) 8) (select (select |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_aws_byte_cursor_advance_harness_~#old~0#1.base_BEFORE_CALL_22|) 8)) (not (= |v_ULTIMATE.start_aws_byte_cursor_advance_harness_~#old~0#1.base_BEFORE_CALL_22| |v_ULTIMATE.start_aws_byte_cursor_advance_~#rv~6#1.base_BEFORE_CALL_24|)))) is different from true [2022-07-21 09:39:22,088 WARN L855 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_aws_byte_cursor_advance_~#rv~6#1.base_BEFORE_CALL_25| Int) (|v_ULTIMATE.start_aws_byte_cursor_advance_harness_~#old~0#1.base_BEFORE_CALL_23| Int)) (and (not (= |v_ULTIMATE.start_aws_byte_cursor_advance_harness_~#old~0#1.base_BEFORE_CALL_23| |v_ULTIMATE.start_aws_byte_cursor_advance_~#rv~6#1.base_BEFORE_CALL_25|)) (= (select (select |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_aws_byte_cursor_advance_~#rv~6#1.base_BEFORE_CALL_25|) 8) (select (select |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_aws_byte_cursor_advance_harness_~#old~0#1.base_BEFORE_CALL_23|) 8)) (= (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_aws_byte_cursor_advance_~#rv~6#1.base_BEFORE_CALL_25|) 8) (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_aws_byte_cursor_advance_harness_~#old~0#1.base_BEFORE_CALL_23|) 8)))) is different from true [2022-07-21 09:39:27,357 WARN L855 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_aws_byte_cursor_advance_~#rv~6#1.base_BEFORE_CALL_26| Int) (|v_ULTIMATE.start_aws_byte_cursor_advance_harness_~#old~0#1.base_BEFORE_CALL_24| Int)) (and (= (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_aws_byte_cursor_advance_~#rv~6#1.base_BEFORE_CALL_26|) 8) (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_aws_byte_cursor_advance_harness_~#old~0#1.base_BEFORE_CALL_24|) 8)) (not (= |v_ULTIMATE.start_aws_byte_cursor_advance_harness_~#old~0#1.base_BEFORE_CALL_24| |v_ULTIMATE.start_aws_byte_cursor_advance_~#rv~6#1.base_BEFORE_CALL_26|)) (= (select (select |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_aws_byte_cursor_advance_harness_~#old~0#1.base_BEFORE_CALL_24|) 8) (select (select |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_aws_byte_cursor_advance_~#rv~6#1.base_BEFORE_CALL_26|) 8)))) is different from true [2022-07-21 09:39:29,476 WARN L855 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_aws_byte_cursor_advance_~#rv~6#1.base_BEFORE_CALL_27| Int) (|v_ULTIMATE.start_aws_byte_cursor_advance_harness_~#old~0#1.base_BEFORE_CALL_25| Int)) (and (= (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_aws_byte_cursor_advance_~#rv~6#1.base_BEFORE_CALL_27|) 8) (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_aws_byte_cursor_advance_harness_~#old~0#1.base_BEFORE_CALL_25|) 8)) (not (= |v_ULTIMATE.start_aws_byte_cursor_advance_harness_~#old~0#1.base_BEFORE_CALL_25| |v_ULTIMATE.start_aws_byte_cursor_advance_~#rv~6#1.base_BEFORE_CALL_27|)) (= (select (select |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_aws_byte_cursor_advance_harness_~#old~0#1.base_BEFORE_CALL_25|) 8) (select (select |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_aws_byte_cursor_advance_~#rv~6#1.base_BEFORE_CALL_27|) 8)))) is different from true [2022-07-21 09:39:31,724 WARN L855 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_aws_byte_cursor_advance_harness_~#rv~14#1.offset_BEFORE_CALL_19| Int) (|v_ULTIMATE.start_aws_byte_cursor_advance_harness_~#rv~14#1.base_BEFORE_CALL_21| Int) (|v_ULTIMATE.start_aws_byte_cursor_advance_~#rv~6#1.base_35| Int) (|v_ULTIMATE.start_aws_byte_cursor_advance_harness_~#old~0#1.base_BEFORE_CALL_26| Int)) (let ((.cse0 (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_aws_byte_cursor_advance_~#rv~6#1.base_35|) 8)) (.cse1 (+ |v_ULTIMATE.start_aws_byte_cursor_advance_harness_~#rv~14#1.offset_BEFORE_CALL_19| 8)) (.cse2 (select (select |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_aws_byte_cursor_advance_~#rv~6#1.base_35|) 8))) (and (not (= |v_ULTIMATE.start_aws_byte_cursor_advance_~#rv~6#1.base_35| |v_ULTIMATE.start_aws_byte_cursor_advance_harness_~#rv~14#1.base_BEFORE_CALL_21|)) (= (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_aws_byte_cursor_advance_harness_~#old~0#1.base_BEFORE_CALL_26|) 8) .cse0) (= (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_aws_byte_cursor_advance_harness_~#rv~14#1.base_BEFORE_CALL_21|) .cse1) .cse0) (= .cse2 (select (select |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_aws_byte_cursor_advance_harness_~#rv~14#1.base_BEFORE_CALL_21|) .cse1)) (not (= |v_ULTIMATE.start_aws_byte_cursor_advance_harness_~#old~0#1.base_BEFORE_CALL_26| |v_ULTIMATE.start_aws_byte_cursor_advance_~#rv~6#1.base_35|)) (= .cse2 (select (select |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_aws_byte_cursor_advance_harness_~#old~0#1.base_BEFORE_CALL_26|) 8))))) is different from true [2022-07-21 09:39:33,915 WARN L855 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_aws_byte_cursor_advance_harness_~#rv~14#1.base_BEFORE_CALL_22| Int) (|v_ULTIMATE.start_aws_byte_cursor_advance_~#rv~6#1.base_35| Int) (|v_ULTIMATE.start_aws_byte_cursor_advance_harness_~#rv~14#1.offset_BEFORE_CALL_20| Int) (|v_ULTIMATE.start_aws_byte_cursor_advance_harness_~#old~0#1.base_BEFORE_CALL_27| Int)) (let ((.cse0 (select (select |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_aws_byte_cursor_advance_~#rv~6#1.base_35|) 8)) (.cse1 (+ |v_ULTIMATE.start_aws_byte_cursor_advance_harness_~#rv~14#1.offset_BEFORE_CALL_20| 8)) (.cse2 (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_aws_byte_cursor_advance_~#rv~6#1.base_35|) 8))) (and (= .cse0 (select (select |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_aws_byte_cursor_advance_harness_~#old~0#1.base_BEFORE_CALL_27|) 8)) (= .cse0 (select (select |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_aws_byte_cursor_advance_harness_~#rv~14#1.base_BEFORE_CALL_22|) .cse1)) (= (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_aws_byte_cursor_advance_harness_~#rv~14#1.base_BEFORE_CALL_22|) .cse1) .cse2) (= (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_aws_byte_cursor_advance_harness_~#old~0#1.base_BEFORE_CALL_27|) 8) .cse2) (not (= |v_ULTIMATE.start_aws_byte_cursor_advance_~#rv~6#1.base_35| |v_ULTIMATE.start_aws_byte_cursor_advance_harness_~#rv~14#1.base_BEFORE_CALL_22|)) (not (= |v_ULTIMATE.start_aws_byte_cursor_advance_harness_~#old~0#1.base_BEFORE_CALL_27| |v_ULTIMATE.start_aws_byte_cursor_advance_~#rv~6#1.base_35|))))) is different from true [2022-07-21 09:39:34,079 INFO L356 Elim1Store]: treesize reduction 13, result has 7.1 percent of original size [2022-07-21 09:39:34,079 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 41 treesize of output 13 [2022-07-21 09:39:34,084 INFO L356 Elim1Store]: treesize reduction 13, result has 7.1 percent of original size [2022-07-21 09:39:34,085 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 41 treesize of output 13 [2022-07-21 09:39:35,078 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 33 proven. 9 refuted. 0 times theorem prover too weak. 4 trivial. 72 not checked. [2022-07-21 09:39:35,078 INFO L328 TraceCheckSpWp]: Computing backward predicates...